U.S. patent application number 16/525610 was filed with the patent office on 2019-11-21 for wireless communication device and wireless communication method.
This patent application is currently assigned to Sony Corporation. The applicant listed for this patent is Sony Corporation. Invention is credited to Shiwei Cao, Qimei Cui, Xin Guo, Yanzhao Hou, Qinyan Jiang, Hui Liang, Chen Sun, Shiyu Zhang.
Application Number | 20190357218 16/525610 |
Document ID | / |
Family ID | 57684693 |
Filed Date | 2019-11-21 |
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United States Patent
Application |
20190357218 |
Kind Code |
A1 |
Hou; Yanzhao ; et
al. |
November 21, 2019 |
WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD
Abstract
The present disclosure relates to a wireless communication
device and a wireless communication method. The wireless
communication device according to one embodiment comprises one or
more processors, wherein the processor(s) is/are configured to
acquire the type of information to be transmitted via
device-to-device communication, wherein the type is one of a
plurality of types at least including a first type and a second
type; and the processor(s) is/are also configured to determine a
resource use manner and a power control manner which are used for
transmitting information at least according to the type of the
information.
Inventors: |
Hou; Yanzhao; (Beijing,
CN) ; Cui; Qimei; (Beijing, CN) ; Cao;
Shiwei; (Beijing, CN) ; Liang; Hui; (Beijing,
CN) ; Jiang; Qinyan; (Beijing, CN) ; Zhang;
Shiyu; (Beijing, CN) ; Guo; Xin; (Beijing,
CN) ; Sun; Chen; (Beijing, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Sony Corporation |
Tokyo |
|
JP |
|
|
Assignee: |
Sony Corporation
Tokyo
JP
|
Family ID: |
57684693 |
Appl. No.: |
16/525610 |
Filed: |
July 30, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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15742212 |
Jan 5, 2018 |
10420111 |
|
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PCT/CN2016/088562 |
Jul 5, 2016 |
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16525610 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W 4/40 20180201; H04W
4/90 20180201; H04W 4/70 20180201; H04W 72/10 20130101; H04W 52/281
20130101; H04W 4/46 20180201; H04W 72/0473 20130101 |
International
Class: |
H04W 72/04 20060101
H04W072/04; H04W 4/40 20060101 H04W004/40; H04W 4/90 20060101
H04W004/90; H04W 72/10 20060101 H04W072/10; H04W 52/28 20060101
H04W052/28; H04W 4/70 20060101 H04W004/70 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 7, 2015 |
CN |
201510395183.6 |
Claims
1. A wireless communication device, comprising: circuitry
configured to: acquire a type of information to be transmitted via
a device-to-device (D2D) communication, the type being one of a
plurality of types that includes at least a first type and a second
type; and determine a transmission power for transmitting the
information based on a power control parameter received from a base
station, the power control parameter indicating a path loss and the
power control parameter being related to a priority of the
information.
2. The wireless communication device according to claim 1, wherein
the type is predefined based on at least one of content of the
information and a scenario in which the information is to be
sent.
3. The wireless communication device according to claim 1, wherein
the circuitry is configured to select a communication resource, for
transmitting the information in a case that the type is the first
type, from dedicated communication resources which are used for the
D2D communication.
4. The wireless communication device according to claim 1, wherein
the circuitry is configured to determine the transmission power for
the information as a first predetermined power in a case that the
type is the first type.
5. The wireless communication device according to claim 1, wherein
in a case that the type is the first type, the information
comprises safety information.
6. The wireless communication device according to claim 1, wherein
the circuitry is configured to select, in a case that the type is
the second type, a communication resource for transmitting the
information from shared communication resources which are used for
the D2D communication and communication between the base station
and a user equipment.
7. The wireless communication device according to claim 6, wherein
the circuitry is configured to select a communication resource for
transmitting the information from reserved communication resources
in the shared communication resources, and the D2D communication
has a priority in utilizing the reserved communication resources
over communication between the base station and the user
equipment.
8. The wireless communication device according to claim 7, wherein
the reserved communication resources comprise a communication
resource of an unlicensed frequency band.
9. The wireless communication device according to claim 1, wherein
the circuitry is configured to determine, in a case that the type
is the second type a transmission power for the information based
on a priority of the information.
10. The wireless communication device according to claim 9, wherein
the circuitry is configured to determine the transmission power for
the information based on a power control parameter received from
the base station, and the power control parameter being associated
with the priority.
11. The wireless communication device according to claim 9, wherein
the circuitry is configured to determine the transmission power for
the information based on a power control parameter set received
from the base station, and the power control parameter set
comprises power control parameters for information with different
priorities.
12. The wireless communication device according to claim 1, wherein
the wireless communication device operates as a user equipment.
13. The wireless communication device according to claim 12,
further comprising: a transceiver configured to receive radio
resource control (RRC) signaling from a base station, wherein the
(RRC) carries a power control parameter for the user equipment to
transmit the information.
14. The wireless communication device according to claim 12,
wherein the user equipment is a vehicle.
15. A wireless communication method, comprising: acquiring a type
of information to be transmitted via a device-to-device (D2D)
communication, the type being one of a plurality of types that
includes at least a first type and a second type; and determining a
transmission power for transmitting the information based on a
power control parameter received from a base station, the power
control parameter indicating a path loss and the power control
parameter being related to a priority of the information.
16. A wireless communication device for a base station, the
wireless communication device comprising: circuitry configured to:
determine a type of information to be transmitted by a user
equipment via a device-to-device (D2D) communication based on
indication information from the user equipment, the type being one
of a plurality of types that includes at least a first type and a
second type; and transmit a power control parameter to the user
equipment, the power control parameter indicating a path loss and
the power control parameter being related to a priority of the
information.
17. The wireless communication device according to claim 16 wherein
the circuitry is configured to select, in a case that the type is
the first type, a communication resource for transmitting the
information from dedicated communication resources which are used
only for the D2D communication.
18. The wireless communication device according to claim 16,
wherein the circuitry is configured to allocate, for the
information of the first type, for different user equipment
frequency spectrums orthogonal to one another.
19. The wireless communication device according to claim 16,
wherein the circuitry is configured to select, in a case that the
type is the second type, a communication resource for transmitting
the information from shared communication resources which are used
for the D2D communication and communication between the base
station and the user equipment.
20. The wireless communication device according to claim 19,
wherein the circuitry is configured to select a communication
resource for transmitting the information from reserved
communication resources in the shared communication resources, and
the reserved communication resources are allocated to the D2D
communication with a priority over communication traffic of the
base station.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. application Ser.
No. 15/742,212, filed Jan. 5, 2018, which is based on PCT filing
PCT/CN2016/088562, filed Jul. 5, 2016, and claims priority to CN
201510395183.6, filed Jul. 7, 2015, the entire contents of each are
incorporated herein by reference.
FIELD
[0002] The present disclosure generally relates to the field of
wireless communications, and in particular to a wireless
communication device and a wireless communication method.
BACKGROUND
[0003] Device-to-device (D2D) communication generally refers to a
communication in which user data can be transmitted directly
between terminals without being relayed via a network. D2D
communication can reduce a load of a base station and can remedy
the defect that cellular devices outside of the coverage of the
base station cannot communicate effectively.
[0004] D2D communication can be applied to various scenarios. For
example, traffic data of user plane may be directly transmitted
locally without transmitting via network side, to offload a
cellular network traffic, for example; wireless communication
between terminals are ensured with the D2D communication in a case
where a natural catastrophe occurs and traditional communication
network infrastructures are damaged: and D2D communication enhanced
for the Internet of Things, etc.
SUMMARY
[0005] In the following, a brief overview of embodiments of the
present disclosure is given below to provide basic understanding to
some aspects of the present disclosure. It should be understood
that this overview is not an exhaustive overview of the present
disclosure. It is neither intended to determine a critical part or
an important part of the present disclosure, nor to limit the scope
of the present disclosure. The object of the overview is only to
give some concepts in a simplified manner, which serves as a
preface of a more detailed description later.
[0006] A wireless communication device is provided according to an
embodiment. The device includes at least one professor. The
professor is configured to acquire the type of information to be
transmitted via a device-to-device communication, wherein the type
is one of multiple types which include at least a first type and a
second type. The processor is further configured to determine a
resource utilization manner and a power control manner for
transmitting the information at least based on the type of the
information.
[0007] A wireless communication method is provided according to
another embodiment. The method includes a step of acquiring the
type of information to be transmitted via a device-to-device
communication, wherein the type is one of multiple types which
include at least a first type and a second type. The method further
includes a step of determining a resource utilization manner and a
power control manner for transmitting the information at least
based on the type of the information.
[0008] A wireless communication device for base station side is
provided according to yet another embodiment. The device includes
at least one processor. The professor is configured to determine
the type of information to be transmitted by a user equipment via a
device-to-device communication based on indication information from
the user equipment, wherein the type is one of multiple types which
include at least a first type and a second type. The processor is
further configured to determine, based on the type, a resource
scheduling manner and a power control manner for the user equipment
to transmit the information.
[0009] A wireless communication method for base station side is
provided according to still another embodiment. The method includes
a step of determining the type of information to be transmitted by
a user equipment via a device-to-device communication based on
indication information from the user equipment, wherein the type is
one of multiple types which include at least a first type and a
second type. The method further includes a step of determining,
based on the type, a resource scheduling manner and a power control
manner for the user equipment to transmit the information.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The present disclosure may be better understood with
reference to the description hereinafter in conjunction with the
drawings. Same or similar components are indicated by to same or
similar reference numbers throughout the drawings. The drawings,
together with the detailed description below, are incorporated in
and form a part of the specification, for further illustrating
preferred embodiments of the present disclosure with examples and
explaining the principle and advantages of the present disclosure.
In the drawings:
[0011] FIG. 1 is a block diagram showing a configuration example of
a wireless communication device according to an embodiment of the
present disclosure:
[0012] FIG. 2 is a block diagram showing a configuration example of
a wireless communication device according to another embodiment of
the present disclosure;
[0013] FIG. 3 is a block diagram showing a configuration example of
a wireless communication device according to yet another embodiment
of the present disclosure:
[0014] FIG. 4 is a block diagram showing a configuration example of
a wireless communication device according to still another
embodiment of the present disclosure:
[0015] FIG. 5 is a block diagram showing a configuration example of
a wireless communication device according to another embodiment of
the present disclosure;
[0016] FIG. 6 is a flowchart showing a process example of a
wireless communication method according to an embodiment of the
present disclosure;
[0017] FIG. 7 is a block diagram showing a configuration example of
a wireless communication device for base station side according to
an embodiment of the present disclosure:
[0018] FIG. 8 is a block diagram showing a configuration example of
a wireless communication device for base station side according to
another embodiment of the present disclosure;
[0019] FIG. 9 is a flowchart showing a process example of a
wireless communication method for base station side according to an
embodiment of the present disclosure;
[0020] FIG. 10 is a block diagram showing an exemplary structure of
a computer which implements the method and device according to the
present disclosure;
[0021] FIG. 11 is a block diagram showing an example of an
illustrative configuration of a smart phone to which a technology
according to the present disclosure can be applied:
[0022] FIG. 12 is a block diagram showing an example of an
illustrative configuration of an evolved base station (eNB) to
which a technology according to the present disclosure can be
applied;
[0023] FIG. 13 is a block diagram showing an example of an
illustrative configuration of an automobile navigation device to
which a technology according to the present disclosure can be
applied;
[0024] FIG. 14 is a schematic diagram for illustrating an example
of a resource utilizing manner for information of different
types:
[0025] FIG. 15 is a schematic diagram for illustrating another
example of resource utilizing manner:
[0026] FIG. 16 is a flowchart illustrating an process example of a
power control manner for information of different types:
[0027] FIG. 17 is a flowchart for illustrating another process
example of a power control manner:
[0028] FIG. 18 is a block diagram showing a configuration example
of a wireless communication device according to an embodiment of
the present disclosure; and
[0029] FIG. 19 is a block diagram showing a configuration example
of a wireless communication device for base station side according
to an embodiment of the present disclosure.
DETAILED DESCRIPTION OF EMBODIMENTS
[0030] Hereinafter, embodiments of the present disclosure will be
described in conjunction with the drawings. Elements and features
described in one drawing or one embodiment of the present
disclosure can be combined with elements and features shown in one
or more of other to drawings or embodiments. It should be noted
that representations and descriptions of components and processing
which are irrelevant to the present disclosure and known by those
skilled in the art are omitted in the drawings and the
specification for clarity.
[0031] As shown in FIG. 1, a wireless communication device 100
according to the embodiment includes a processor 110. The processor
110 includes an acquisition unit 11i, a first determination unit
113 and a second determination unit 115. It should be noted that,
although the acquisition unit 111, the first determination unit 113
and the second determination unit 115 are shown in the form of
functional modules in the figure, functions of the acquisition unit
111, the first determination unit 113 and the second determination
unit 115 may be implemented by the processor 110 as a whole, and
are not necessarily implemented by discrete actual components in
the processor 110. In addition, although the processor 110 is shown
with one block in the figure, the communication device 100 may
include multiple processors, and the functions of the acquisition
unit 111, the first determination unit 113 and the second
determination unit 115 may be distributed in multiple processors,
so these functions are implemented by cooperation of the the
multiple processors.
[0032] The acquisition unit 111 is configured to acquire the type
of information to be transmitted via a device-to-device
communication. The type of the information is one of multiple types
which include at least a first type and a second type. Different
types may correspond to different requirements on information
transfer. For example, information of different types may have
different requirements on a time delay, coverage and a detection
rate and so on.
[0033] According to an embodiment, the type of the information may
be predefined based on content of the information. In other words,
information with specified content is defined to have a specified
type based on a predetermined correspondence. Accordingly, the
"acquiring" of the type of the information by the acquisition unit
111 may be determining the type of the information according to the
content of the information based on the predetermined
correspondence. It should be noted that, the acquisition unit 111
does not necessarily determine the type of the information by
recognizing the content of the information, but may to determine
the type of the information based on a source of the information,
or directly obtain the type of information based on an identifier
and the like carried in the information, or the like. For example,
information from a specific information source may be considered to
have specific content, thereby having a specific type.
Alternatively, while generating information by an information
source, an identifier may be added in the information based on the
content of the information or an identifier indicating the type of
the information may be directly carried in the information.
[0034] As an example of information classification, information may
be classified into safety information (a first type) and non-safety
information (a second type) based on inherent safety features of
the information. For example, as a typical scenario for application
of the Internet of things, the D2D communication may include
communication between a vehicle and a related entity (V2X
communication). The V2X communication may include, for example,
vehicle-to-vehicle (V2V) communication, vehicle-to-installation
(V2I) communication, vehicle-to-pedestrian (V2P) communication and
the like. Information transmission of the V2X may be a broadcast or
a unicast. Taking a V2X application as an example, safety
information may include, for example, an emergency vehicle alarm, a
collision danger alarm, an auxiliary prompt for lane-switching
decision, a road danger/construction prompt, cooperation
information for automatic vehicle-driving, and the like, which has
a high requirement on a time delay, coverage and a detection rate
and the like. The non-safety information may include, for example,
mobility information, information on convenience and the like,
which has a lower requirement on the above aspects for information
transfer as compared with the safety information. However, the
classification manner of safety information and non-safety
information is not limited to information involved in the V2X
application, and the above classification manner can be adopted as
long as the D2D communication involves information with a safety
feature. It should be noted that, Proximity Services-based Direct
Communication (ProSe Direct Communication) is introduced in the
current version 12 of 3GPP LTE-A standard specification, in which
direct communication between user equipments is defined as the mode
of ProSe Direction Communication. Therefore, the D2D communication
described in the present disclosure contains the ProSe Direct
Communication, that is, D2D communication implemented under the
LTE-A standard.
[0035] In addition, in different scenarios, information with the
same content may have different requirements on the coverage and
detection rate and the like. Still taking a V2X application as an
example, highway exit charge information may have different
requirements on the coverage and the detection rate in a scenario
of a high vehicle density and in a scenario of a low vehicle
density.
[0036] Accordingly, according to an embodiment, the type of
information is predefined based on both the content of the
information and a scenario in which the information is to be
sent.
[0037] Still referring to FIG. 1, the first determination unit 113
is configured to determine a resource utilization manner for
transmitting information at least based on the type of the
information. In other words, the resource utilization manner for
transmitting the information is determined in consideration of the
type of the information, but the type of the information may not be
a unique factor for determining the resource utilization
manner.
[0038] In the existing D2D communication, a resource utilization
manner is determined without considering the type of D2D
information. With the solution of the present disclosure, the
resource utilization manner for transmitting information is
determined for different types of information, thereby more
reasonably using resources for information transmission. For
example, as described in conjunction with embodiments below, a
resource utilization manner may be determined for safety
information to achieve a high transmission performance of the
safety information, such as small interference and high signal
reception strength.
[0039] Besides, the second determination unit 115 is configured to
determine a power control manner for transmitting information at
least based on the type of the information. In other words, the
power control manner for transmitting the information is determined
in consideration of the type of the information, but the type of
the information may not be a unique factor for determining the
power control manner.
[0040] The existing D2D power control is made without considering a
requirement on a D2D information transmission quality, hence is not
adapted to the characteristic of different transmission quality
requirements. With the solutions of the present disclosure, power
control manner for transmitting information is determined for
information of different types, thereby the information of
respective types can be transmitted with more reasonable powers,
and a time delay caused by, for example, a power control process
when an information type is switched can be reduced.
[0041] Next, some embodiments will be described, in which a
resource utilization manner for transmitting information is
determined based on the type of the information, and a power
control manner for transmitting the information is determined based
on the type of the information.
[0042] According to an embodiment, the first determination unit 113
is configured to select a communication resource for transmitting
information of a first type, from dedicated communication resources
which are only used for device-to-device communication. In other
words, the information of the first type is transmitted over a
dedicated frequency, thereby avoiding same frequency interference.
As described above, the information of the first type is, for
example, safety information.
[0043] Preferably, frequency spectrum resources orthogonal to one
another in the dedicated communication resources may be allocated
for transmission of different information of the first type,
thereby reducing interference between the transmitted different
information of the first type.
[0044] In addition, the first determination unit 113 may be
configured to select a communication resource for transmitting
information of the second type from shared communication resources.
The shared communication resource can be used for the D2D
communication and communication between a base station and a user
equipment. As described above, the information of the second type
is, for example, non-safety information. However, the present
disclosure is not limited to the classification manner of the
safety information and non-safety information, and may include
various other classification manners. The first type and the second
type correspond to information having different transmission
priorities respectively.
[0045] According to an example, the first determination unit 113
may be configured to select a communication resource for
transmitting the information of the second type from reserved
communication resources in the shared communication resources. As
compared with the communication between the base station and the
user equipment, the D2D communication can have a priority in using
the reserved communication resource.
[0046] In the following, an example of a communication resource
utilization manner determined by the first determination unit 113
will be described in conjunction with schematic diagrams of FIG. 14
and FIG. 15.
[0047] FIG. 14 and FIG. 15 show limited resource utilization
solutions involved in the embodiments of the present disclosure, in
which reserved resources are limitedly allocated based on features
having different resource requirements such as different service
priorities or different service quality requirements.
[0048] Specifically, as shown in FIG. 14, a dedicated resource is
allocated to information of the first type, such as safety
information. A reserved resource can be used by a wireless
communication device such as a V2X device according to the
embodiment and can also be used by a base station and other user
equipments, and an uplink resource may be multiplexed. The V2X
device has a higher priority in using the reserved resource. When
transmitting information of the second type, the base station may
firstly allocate an available reserved resource to the information.
For a traffic transmission of the base station, a reserved resource
can be allocated for the traffic transmission only if other
resources are all unavailable. That is to say, when scheduling
resources for transmission between the base station and the user
equipment, the base station firstly determines whether other uplink
resources of LTE are available, and allocates the reserved resource
if the other uplink resources of LTE are all unavailable. In
addition, as will be described in detail below, in a certain case,
a base station traffic allocated to the reserved resource may be
kicked out and allocated with other resources.
[0049] Besides, according to an embodiment, the reserved
communication resource may include a communication resource of an
unlicensed frequency band. The unlicensed frequency band is, for
example, a broadcast television frequency band, a WiFi frequency
band, a radar frequency band and the like other than a licensed
frequency band of a cellular communication network.
[0050] In view of that traffics having different requirements on a
quality of service have different resource requirements, a licensed
frequency band resource may be allocated, with a priority, to a
traffic having a high requirement on the quality of service, while
an unlicensed frequency band resource may be firstly allocated to a
traffic having a low requirement on the quality of service. FIG. 15
shows an exemplary manner in which an unlicensed frequency band
resource used by a Licensed Assisted Access (LAA) system is used as
a limited reserved resource. In a case of transmitting traffic
information having a low requirement on quality of service (QoS)
(such as a non-real time data traffic), an unlicensed frequency
band resource may be firstly allocated for the transmission with
the LAA technology. In the case of transmitting traffic information
having a high requirement on QoS (such as a real-time data traffic
or information of payment service having a certain requirement on
quality of transmission), a frequency resource available for long
term evolution (LTE) may be firstly allocated for the transmission;
an LAA unlicensed frequency band resource may be allocated for the
transmission only if there is no available LTE resource, and once
there is an available LTE resource again, it may be switched back
to use the LTE frequency resource.
[0051] Besides, according to an embodiment, in the case that a
reserved communication resource is used, information indicating an
occupation on the reserved resource may be generated. The
embodiment is described below by referring to FIG. 2.
[0052] As shown in FIG. 2, a wireless communication device 200
according to the embodiment includes a processor 210. The processor
210 includes an acquisition unit 211, a first determination unit
213, a second determination unit 215 and a generation unit 217.
Configurations of the acquisition unit 211, the first determination
unit 213 and the second to determination unit 215 are similar to
those of the acquisition unit 111, the first determination unit 113
and the second determination unit 115 described by referring to
FIG. 1. The generation unit 217 is configured to generate
indication information representing an occupation on a reserved
communication resource, in the case that the first determination
unit 213 determines to use the reserved communication resource.
Based on the indication information, the base station may be
indicated not to allocate the occupied resource to other traffic,
or kick out a base station traffic that the reserved resource has
been allocated for and allocate other resources for the
service.
[0053] Next, returning to refer to FIG. 1, it is described in
conjunction with specific embodiments that the second determination
unit 115 determines a power control manner for transmitting
information based on the type of the information.
[0054] According to an embodiment, the second determination unit
115 may be configured to determine a transmission power for
information of the first type as a first predetermined power. The
first predetermined power may be a power which is preset and can
ensure a predetermined level of coverage and detection rate. By
directly setting the transmission power for the information of the
first type as a predetermined power, a power control delay can be
avoided, meanwhile requirements on the coverage and detection rate
can be met. With the configuration, it can be ensured that
information having a high requirement on transmission such as
safety information is sent timely and effectively. It should be
noted that in an existing LTE-A communication standard, for
example, a transmission power of a user equipment is dynamically
controlled by a base station based on different wireless
transmission environments including a path loss, a shadow, fast
fading and the like.
[0055] In another aspect, the second determination unit 115 may be
configured to determine a transmission power for the information of
the second type based on a priority of the information. For
example, the priority may be associated with coverage and a
detection rate of the information.
[0056] In the following, description is made by still taking the
classification of safety information and non-safety information as
an example. Since the non-safety information to differs from a base
station traffic in a resource utilization priority, the non-safety
information may be further divided into two or more sub-levels,
such as a level P1 and a level P2. P1 sub-information has a higher
frequency utilization priority than the base station traffic and P2
sub-information has a same frequency utilization priority as the
base station traffic or a lower frequency utilization priority than
the base station traffic. The division of the information levels
and some examples are given as follows.
[0057] P1 information: has high requirements on coverage and a
detection rate among non-safety information, has a higher frequency
utilization priority than the base station traffic, and is closely
associated with mobility generally, such as information on traffic
efficiency improvement, including road speed limit prompt, traffic
light prompt, traffic restriction management, parking guide
information, turning prohibiting indication and the like.
[0058] P2 information: for example other types of information among
V2X non-safety information, has a frequency utilization priority
same as or lower than that of the base station traffic, such as
information on information entertainment service, including a
service information announcement, a commercial advertisement, local
electronic payment, transaction information and the like, which has
a relatively low requirement on coverage and a detection rate.
[0059] The above sub-information covers information types of many
services, hence different sub-information may be different in the
coverage and the detection rate. In order to apply a finer power
control to improve a frequency spectrum utilization rate and reduce
interference, the above sub-information may be further ranked and
classified based on requirements on related parameters such as the
coverage and the detection rate. For example, the P2
sub-information may be further divided and represented with a
priority i=1, 2, . . . , N, and an example is given as follows:
[0060] P2-1: information in the P2 information having high
requirements on the coverage and the detection rate, such as a
traffic jam alarm;
[0061] P2-2: information having lower requirements on the coverage
and the detection rate than to P2-1, such as transaction payment
service information;
[0062] . . .
[0063] P2-N: information having lowest requirements on the coverage
and the detection rate, such as a commercial advertisement.
[0064] Next, the requirements on the coverage and the detection
rate are described by taking a V2X application as an example.
[0065] Coverage and a detection rate in V2X power control is that a
determined detection rate a % is required to be reached for a V2X
communication within a certain range d.
[0066] In the case that non-safety information is transmitted in a
V2X, a minimum coverage and detection rate, with which a basic
requirement of the information type (P1, P2-1, P2-2, . . . , P2-N)
of the non-safety information is met, is determined.
[0067] Related Definitions of a Power:
[0068] P.sub.max: a maximum available transmission power of a V2X
device, which can meet a requirement on safety information
transmission of V2X. For example, the above first predetermined
power may be determined as P.sub.max for the safety
information.
[0069] P.sub.i: a power-control power corresponding to the
information type, which can be calculated with a power control
formula. An exemplary way for calculating the power will be
described later.
[0070] P: a transmission power of the V2X device, which is the
transmission power finally adopted.
[0071] P.sub.min: a minimum transmitting power, which is
pre-configured for the non-safety information type to meet a
minimum requirement on coverage and a detection rate corresponding
to the non-safety information type. In the case that the above
information classification is adopted, minimum transmitting powers
corresponding to respective types may meet the following
relationship for example:
[0072]
P.sub.max>P.sub.min1.gtoreq.P.sub.min2_1.gtoreq.P.sub.min2_2 . .
. .gtoreq.P.sub.min2_N, where P.sub.min1 is a minimum transmitting
power for the P1 sub-information, and P.sub.min2_i is a minimum
transmitting power for the P2 sub-information corresponding to
priority i.
[0073] With the wireless communication device according to the
embodiments of the present disclosure, corresponding transmitting
powers can be determined based on different information types.
However, corresponding transmission powers can also be determined
based on power control parameters for different information types
from a base station.
[0074] According to an embodiment, the second determination unit
115 is configured to determine a transmission power for information
based on a power control parameter from the base station. The power
control parameter is associated with a priority of the information.
In other words, in the embodiment, the process of determining the
power control parameter based on the classification of the
information is performed by base station side, and the power
control parameter is notified to a user equipment.
[0075] A power control parameter may be separately acquired for a
type of information to be transmitted, or power control parameters
for multiple types may be acquired together.
[0076] According to an embodiment, the second determination unit
115 is configured to determine a transmission power for information
based on a power control parameter set from a base station. The
power control parameter set includes power control parameters for
information with different priorities. With the configuration, a
communication load caused by sending power control parameters for
multiple times can be effectively reduced, which is particularly
effective for an application scenario in which an information
transmitting power needs to be determined for multiple times.
[0077] Moreover, according to an embodiment, the second
determination unit 115 may be further configured to determine a
predetermined power as an initial power for transmitting
information, for a user equipment to operate, and adjust the
transmission power for the information based on a power control
parameter from a base station. With the configuration, the initial
power can be determined without causing a power control delay, and
the transmission power can be subsequently adjusted in response to
an indication from the base station.
[0078] In the following, an exemplary way for subsequently
determining the transmitting power in response to the indication
from the base station is described. A transmitting power for
information may be determined with the following equation 1:
P = min { P cmax , i P o + .alpha. PL + 101 g ( M ) + .DELTA. MCS (
1 ) ##EQU00001##
where P.sub.o and .alpha. are two adjustable power control
parameters configured by an upper layer of the base station,
P.sub.o is a cell specific parameter, and .alpha. is a path loss
compensation parameter. P.sub.cmax,i is a maximum effective
transmission power over a sub-carrier i of a base station c, and M
represents the number of physical resource blocks of a frequency
spectrum occupied by a V2X transmission. .DELTA..sub.MCS is a power
offset determined by modulation and encoding schemes defined in the
3rd Generation Partnership Project (3GPP). Here, .DELTA..sub.MCS
may be set as 0, the value of P.sub.o is selected to match with
specific modulation and encoding schemes. PL is a path loss, and a
user equipment (UE) may obtain the path loss by measuring a
reference signal. In an example, the base station may configure a
P.sub.o for the V2X communication different from those for other
communications. Further, different P.sub.o may be configured based
on different information types.
[0079] The wireless communication device according to the
embodiment of the present disclosure may serve as a user equipment.
As aforementioned, the user equipment may be, for example, a
vehicle device, and accordingly the transmitted information may be
V2X information.
[0080] In addition, as aforementioned, the user equipment may
determine the transmission power for information of the second type
based on the power control parameter from the base station.
[0081] Accordingly, in an embodiment shown in FIG. 3, a wireless
communication device 300 includes a processor 310. The processor
310 includes an acquisition unit 311, a first determination unit
313, a second determination unit 315 and a generation unit 317.
Configurations of the acquisition unit 311, the first determination
unit 313 and the second determination unit 315 are similar to those
of the acquisition unit 111, the first determination unit 113 and
the second determination unit 115 which are described above.
[0082] The generation unit 317 is configured to generate indication
information related to a priority of the information of the second
type, in the case that information to be transmitted is the
information of the second type. The priority of the information may
be predefined based on content of the information, such as the
aforementioned P2-1 to P2-N.
[0083] The indication information generated by the generation unit
317 may be sent to the base station for determining a corresponding
power control parameter.
[0084] Accordingly, as shown in FIG. 4, a wireless communication
device 400 according to an embodiment includes a processor 410. The
processor 410 includes an acquisition unit 411, a first
determination unit 413, a second determination unit 415 and a
generation unit 417. Configurations of the acquisition unit 411,
the first determination unit 413, the second determination unit 415
and the generation unit 417 are similar to those of corresponding
units which are described above. In addition, the wireless
communication device 400 further includes a transceiver 420. The
transceiver 420 is configured to send indication information
generated by the generation unit 417 to a base station via a
physical uplink control channel (PUCCH).
[0085] FIG. 5 shows a configuration example of a wireless
communication device 500 according to another embodiment. The
wireless communication device 500 includes a processor 510 and a
transceiver 520. The processor 510 includes an acquisition unit
511, a first determination 513 and a second determination unit 515,
configurations of which are respectively similar to those of the
aforementioned acquisition units, first determination units and
second determination units. The transceiver 520 is configured to
receive radio resource control (RRC) signaling from a base station.
The radio resource control signaling carries a power control
parameter for a user to transmit information, such as the above
P.sub.o and .alpha.. In the embodiment, a transmission power for
information in D2D communication is determined based on the power
control parameter from the base station. In a preferred example,
the RRC signaling sent by the base station contains multiple groups
of power control parameters for different information types. In a
case where the type of information to be transmitted is changed,
the user equipment can timely determine a reasonable transmission
power for operation without waiting a power control parameter to be
retransmitted by the base station.
[0086] In addition, although not shown in the figure, the processor
510 may further include a unit similar to the generation unit 417
described with reference to FIG. 4, for generating indication
information on a priority of information of the second type.
However, in some embodiments, the generation unit is unnecessary.
For example, in the case that the transmission power for the
information is determined based on the power control parameter set
(such as the above multiple groups of power control parameters)
received from the base station (where the power control parameter
set includes power control parameters for information with
different priorities), it is unnecessary to send indication
information on a priority of specific information to the base
station.
[0087] As shown in FIG. 5, optionally, the wireless communication
device 500 may further include a storage 530 configured to store
the power control parameter sent from the base station. The power
control parameter stored in the storage 530 is used, for example,
in the case that the type of information to be sent is changed, a
corresponding power control parameter may be determined based on
the contents stored in the storage, thereby reducing a
communication overhead caused by requesting the power control
parameter from the base station.
[0088] Next, examples of resource scheduling and power control for
information of P1 type and information of P2 type which are taken
as exemplary information types are respectively described in
conjunction with FIG. 16 and FIG. 17, in which, a V2X device is
taken as an example of a wireless communication device. However, it
should be understood that, the present disclosure is not limited to
details in the following example.
[0089] As shown in FIG. 16, when the V2X device is to transmit P1
sub-information, a process of resource scheduling and power control
is as follow:
[0090] In step S1610, when initially transmitting the P1
sub-information, the V2X device firstly selects a resource from a
reserved resource pool of a shared resource pool, and adopts a
predefined power P.sub.min1 as an initial transmission power. Here,
the initial transmitting power is adopted for transmission firstly
instead of obtaining a power control parameter from the base
station and then transmitting with a power-control power, thereby
reducing an interaction time delay. Then, the base station may
re-configure a resource and a transmission power for the
device.
[0091] Meanwhile, a power control and resource request is sent to
the base station. The request information, for example, may contain
one bit information for representing whether information being
currently transmitted is P1 sub-information. For example, one bit
in uplink control information (UCI) in the PUCCH is used for
indicting whether current information is P1 sub-information.
[0092] After receiving the request information, the base station
learns that the V2X device currently transmits the P1
sub-information. Since the P1 sub-information has a higher
frequency utilization priority than a normal base station traffic,
the base station may start a back-off mechanism. An example of the
back-off mechanism is as follows.
[0093] If there is currently a normal base station UE using a same
uplink frequency resource as the V2X device, the UE will be
allocated with other available frequency resources (the above
mentioned kicking out), so that the part of uplink frequency
resource is dedicated for the V2X device. Meanwhile, the part of
uplink frequency resource is labeled as temporally non-sharable and
cannot be re-shared until the base station exits from the back-off
mechanism.
[0094] Next, in step S1620, the base station configures parameters
for all information types (including P1 sub-information and P2
sub-information) of non-safety information, such as .alpha. and a
group of P.sub.0i (i=0, 1, 2, . . . , N), based on a requirement on
a signal to interference plus noise ratio and requirements on
coverage and a detection rate for different information types.
[0095] The V2X device receives a power control parameter sent by
the base station, and for to example, may obtain a path loss (PL)
in the following manner:
[0096] the base station calculates PL based on information sent by
the V2X device, for example a sounding reference signal (SRS), and
then the base station sends the PL to the V2X device as a power
control parameter; or
[0097] the V2X device calculates the PL based on a reference signal
(RS).
[0098] The path loss parameter is not required in the case that a
is set as zero. The V2X device obtains values of multiple groups of
parameters P.sub.0i and .alpha., then calculates power-control
power based on the above equation (1), and may store related
parameters in a parameter table such as the following table 1.
TABLE-US-00001 TABLE 1 P1 P2-1 P2-2 . . . P2-N P.sub.0.sub.i
P.sub.0.sub.0 P.sub.0.sub.1 P.sub.0.sub.2 P.sub.0.sub.N .alpha.
.alpha. .alpha. .alpha. .alpha. P.sub.v2x.sub.i P.sub.v2x.sub.0
P.sub.v2x.sub.1 P.sub.v2x.sub.2 P.sub.v2x.sub.N
[0099] The power-control power of the V2X device transmitting the
P1 sub-information is P.sub.v2x_0, and the transmission power is
selected based on the following equation (2):
P = { P v 2 x_j P v 2 x_j .ltoreq. P max P max P v 2 x_j > P max
( 2 ) ##EQU00002##
[0100] The base station may update, once for every time duration T,
the power control parameters P.sub.0i and .alpha. for the V2X
device transmitting the information. Then, the V2X device can
update the parameter table accordingly and obtains a new
transmission power.
[0101] In the case that the information to be transmitted by the
V2X device is changed into P2 sub-information (S1630), a
power-control power for the information can be directly obtained
from the parameter table. Preferably, in the case that the path
loss changes rapidly, a power control parameter for the information
may be obtained from the parameters and the power-control power is
calculated based on the path loss measured currently. Then, a
transmission power is selected based on the equation (2). Resources
used by the original information are used continuously. Meanwhile,
it is reported to the base station that P2 sub-information is
currently transmitted. The base station re-allocates resources to
the P2 sub-information, thereby reducing a time overhead.
[0102] After receiving the information, the base station learns
that the V2X device no longer transmits the P1 sub-information and
may exit from the back-off mechanism, so that the part of labeled
frequency resource can be re-multiplexed by the base station
UE.
[0103] As shown in FIG. 17, in the case that the V2X is to transmit
the P2 sub-information, a process of resource scheduling and power
control is as follow.
[0104] In S1710, when initially transmitting the P2
sub-information, the V2X device firstly selects a resource from a
reserved resource pool of a shared resource pool, and adopts a
predefined power P.sub.min2_i as an initial transmission power.
Here, the initial transmitting power is adopted for transmission
firstly, instead of obtaining a power control parameter from the
base station and then transmitting with the power-control power,
thereby reducing an interaction time delay. Then, the base station
may re-configure a resource and a transmission power for the
device.
[0105] Meanwhile, a power control and resource request is sent to
the base station by the V2X device. The request information, for
example, may contain one bit for representing whether the
information being currently transmitted is P2 sub-information, for
example:
[0106] one bit in UCI in the PUCCH is used for indicting whether
the information being currently transmitted is P2
sub-information.
[0107] Next, in S1720, after receiving the request information, the
base station learns that the V2X device currently transmits the P2
sub-information. The base station configures parameters for all
information types (including P1 sub-information and P2
sub-information) of non-safety information, such as a group of
P.sub.0i (i=0, 1, 2, . . . , N) and a .alpha., based on a
requirement on a signal to interference plus noise ratio and
requirements on coverage and a detection rate for different
information types. A reference solution of parameter configuration
is described below.
[0108] The path loss compensation parameter .alpha. has a
configuration manner same as a traditional configuration manner of
LTE. Alternatively, .alpha. may also be directly set as zero. The
parameter P.sub.0i can be determined based on equation (3) and
equation (4).
P.sub.0_i=P.sub.0_NOMINAL_PUSCH+P.sub.0_Device (3)
P.sub.0_Device=.mu.P.sub.0_Normal_UE+.eta.P.sub.0_V2X-D (4)
where P.sub.0_NOMINAL_PUSCH is a cell nominal power which is
broadcasted via an SIB2 system message (UplinkPowerControlCommon),
P.sub.0_Device is a nominal power offset obtained based on
interference from the base station side and a V2X information
request, and may be calculated with equation (4). P.sub.0_Normal_UE
is a nominal power offset meeting a current acceptable interference
requirement of the base station, P.sub.0_V2X-D is a nominal power
offset calculated based on requirements on coverage and a detection
rate of the V2X information, P and q are corresponding weighting
factors, where 0.ltoreq..mu.,.eta..ltoreq.1 and .mu.+.eta.=1. The
values of the weighting factors may be adjusted as needed. In this
way, there may be multiple groups of parameters P.sub.0_Device for
different V2X information types. The multiple groups of parameters
each may be sent to the UE via dedicated signaling such as RRC
signaling (an information element UplinkPowerControlDedicated in
the RRC signaling). The UE then calculates P.sub.0i based on
equation (3). The dedicated signaling may be carried by a data
channel such as PUSCH. It should be understood that, as
aforementioned, the base station may also explicitly notify the UE
of multiple P.sub.0i via the RRC signaling
[0109] The base station may transmit one a parameter and a group of
P.sub.0i parameters to the V2X device in the above way.
[0110] The V2X device receives a power control parameter sent by
the base station, and the path loss PL may be determined in the
following manner:
[0111] the base station calculates PL based on information sent by
the V2X device such as SRS, and then sends the PL to the V2X device
as a power control parameter; or the V2X device calculates the PL
based on RS.
[0112] The path loss parameter is not required in the case that a
is set as zero. The V2X device obtains values of multiple groups of
parameters P.sub.0i and one .alpha.. Then power-control power is
calculated with equation (1), and related parameters are stored in
the parameter table. The stored parameter may be determined as
needed.
[0113] The V2X device can obtain a power-control power P.sub.v2xj
corresponding to a P2-j sub-information type from the parameter
table. The P2 sub-information has a lower priority than the base
station traffic, hence a transmission power for the P2
sub-information is selected based on the above equation (2).
[0114] The base station may update, once for every time duration T,
the power control parameters P.sub.0i and .alpha. for the V2X
device transmitting the information. Then, the V2X device updates
the parameter table and obtains a new transmission power based on
equation (2).
[0115] In the case that current transmission information of the V2X
device is changed within the P2 sub-information, a corresponding
power-control power may be directly obtained from the parameter
table. Preferably, in the case that the path loss changes rapidly,
a corresponding power control parameter may be obtained from the
parameter table and the power-control power is calculated from a
current newly-measured path loss. Then, a transmission power is
selected. Here, it is unnecessary to request the power control
parameter from the base station, thereby saving the time and
reducing resource overheads for signaling transmission.
[0116] In the case that the type of the V2X transmission
information is changed and P1 sub-information needs to be
transmitted (S1730), a power-control power P.sub.v2x.sub.0 for the
P1 sub-information may be directly obtained from a storage table.
Preferably, in the case that the path loss changes rapidly, a power
control parameter may be obtained from the parameter table and a
power-control power is calculated from a current newly-measured
path loss. In addition, resources for the original information are
used continuously, and it is reported to the base station that the
P1 sub-information is currently transmitted. The base station
re-allocates resources for the P1 sub-information, thereby reducing
a time overhead.
[0117] It is apparent that some methods and processing are also
disclosed in the description of the embodiments of the wireless
communication device above. Below, a wireless communication method
according to an embodiment of the present disclosure is described
without repeating some details described above.
[0118] As shown in FIG. 6, a wireless communication method
according to the embodiment includes a step S610 of acquiring the
type of information to be transmitted via a device-to-device
communication. The type is one of multiple types which include at
least a first type and a second type. As described above,
information of different types may have different requirements on
information transfer, for example, have different requirements on a
time delay, coverage and a detection rate and the like. The type of
the information may be predefined based on content of the
information. More particularly, information of the first type may
be safety information and information of the second type may be
non-safety information.
[0119] The method further includes a step S620 of determining a
resource utilization manner and a power control manner for
transmitting the information at least based on the type of the
information.
[0120] The method may be performed at user equipment (such as V2X
device) side, or may be performed at base station side.
Alternatively, the above steps may be respectively performed at the
user equipment side and the base station side.
[0121] Next, a configuration example of a wireless communication
device at base station side according to an embodiment of the
present disclosure is described. It should be noted that, some
processing for resource scheduling and power control at the base
station side has been described in the descriptions of the above
embodiments. Hereinafter, a wireless communication device at base
station side according to the embodiment of the present disclosure
is described without repeating some details which have been
described.
[0122] As shown in FIG. 7, a wireless communication device 700 for
base station side according to an embodiment includes a processor
710. The processor 710 includes a first determination unit 711, a
second determination unit 713 and a third determination unit
715.
[0123] The first determination unit 711 is configured to determine
the type of information to be transmitted by a user equipment via a
device-to-device communication, based on indication information
from the user equipment. The type is one of multiple types which
include at least a first type and a second type. Information of
different types may have different requirements on information
transfer, for example, have different requirements on a time delay,
coverage and a detection rate and the like. The type of the
information may be predefined based on content of the information.
More particularly, information of the first type may be safety
information and information of second type may be non-safety
information.
[0124] The second determination unit 713 is configured to determine
a resource scheduling manner for a user equipment to transmit the
information, based on the type acquired by the first determination
unit 711.
[0125] The third determination unit 715 is configured to determine
a power control manner for the user equipment to transmit the
information, based on the type acquired by the first determination
unit 711.
[0126] According to an embodiment, the second determination unit
713 may be configured to select a communication resource for
transmitting the information of the first type from dedicated
communication resources. The dedicated communication resource is
only used for device-to-device communication.
[0127] In addition, the second determination unit 713 may be
configured to, for the information of the first type, allocate
frequency spectrums orthogonal to one another for to different user
equipments, thereby reducing interference between transmissions of
different information of the first type.
[0128] According to an embodiment, the second determination unit
713 may be configured to select a communication resource for
transmitting the information of the second type from shared
communication resources. The shared communication resource can be
used for the device-to-device communication and communication
between a base station and a user equipment.
[0129] In addition, the second determination unit 713 may be
further configured to select a communication resource for
transmitting the information from a reserved communication resource
in the shared communication resources. The reserved communication
resource is allocated for the device-to-device communication with a
priority as compared to base station communication traffic.
[0130] As described above, in the case that the user equipment uses
the reserved communication resource, a base station traffic for
which the reserved communication resource is allocated may be
kicked out and allocated with other resources.
[0131] Accordingly, as shown in FIG. 8, a wireless communication
device 800 for base station side according to an embodiment
includes a processor 810. The processor 810 includes a first
determination unit 811, a second determination unit 813, a third
determination unit 815 and a deactivation unit 817. Configurations
of the first determination unit 811, the second determination unit
813 and third determination unit 815 are similar to those of the
first determination unit 711, second determination unit 713 and
third determination unit 715 described with reference to FIG. 7.
The deactivation unit 817 is configured to stop communication
traffic of the base station from using a reserved communication
resource, if the indication information from a user equipment
indicates that the user equipment is to use the reserved
communication resource. Specifically, the deactivation unit 817
may, for example, generate an instruction for stopping the
communication traffic of the base station from using the reserved
communication resource.
[0132] Returning to refer to FIG. 7, according to an embodiment,
the third determination unit 715 may be configured to determine a
priority of information of the second type based on the indication
information from the user equipment, and determine a power control
parameter of the information based on the priority.
[0133] According to another embodiment, the third determination
unit 715 may be configured to determine a power control parameter
set for information of the second type. The power control parameter
set includes power control parameters for information with
different priorities. With the configuration, a communication load
caused by sending power control parameters for multiple times can
be effectively reduced.
[0134] Moreover, although not shown in the figure, the wireless
communication device for the base station side according to an
embodiment may include a transceiver. For example, the transceiver
is configured to receive indication information sent by a user
equipment via PUCCH and send RRC signaling to the user
equipment.
[0135] FIG. 9 shows a process example of a wireless communication
method for base station side according to an embodiment of the
present disclosure.
[0136] In step S910, the type of information to be transmitted by a
user equipment via device-to-device communication is determined
based on indication information of the user equipment. The type is
one of multiple types which include at least a first type and a
second type. Information of different types may have different
requirements on information transfer, for example, have different
requirements on a time delay, coverage and a detection rate and the
like. The type of the information may be predefined based on
content of the information. More particularly, information of the
first type may be safety information and information of the second
type may be non-safety information.
[0137] In step S920, a resource scheduling manner and a power
control manner for the user equipment to transmit the information
is determined based on the type.
[0138] In addition, embodiments of the present disclosure also
include a wireless communication device shown in FIG. 18 and a
wireless communication device shown in FIG. 19.
[0139] As shown in FIG. 18, a wireless communication device 1800
according to an embodiment includes an acquisition apparatus 1801
and a determination apparatus 1803.
[0140] The acquisition apparatus 1801 is configured to acquire the
type of information to be transmitted via a device-to-device
communication. The type is one of multiple types which include at
least a first type and a second type.
[0141] The determination apparatus 1803 is configured to determine
a resource utilization manner and a power control manner for
transmitting the information, at least based on the type of the
information.
[0142] As shown in FIG. 19, a wireless communication device 1900
for base station side according to an embodiment includes a first
determination apparatus 1901 and a second determination apparatus
1903.
[0143] The first determination apparatus 1901 is configured to
acquire the type of information to be transmitted by a user
equipment via a device-to-device communication, based on indication
information from the user equipment. The type is one of multiple
types which include at least a first type and a second type.
[0144] The second determination apparatus 1903 is configured to
determine a resource scheduling manner and a power control manner
for the user equipment to transmit the information, based on the
type.
[0145] As examples, the steps of the above methods and the modules
and/or units of the above devices can be realized by software,
firmware, hardware or combinations thereof. In the case where the
present disclosure is realized by software or firmware, a program
constituting the software implementing the above methods is
installed in a computer with a dedicated hardware structure (e.g. a
general computer 1000 shown in FIG. 10) from a storage medium or
network, where the computer is capable of implementing various
functions when installed with various programs.
[0146] In FIG. 10, a central processing unit (CPU) 1001 executes
various processing in to response to a program stored in a
read-only memory (ROM) 1002 or a program loaded to a random access
memory (RAM) 1003 from a storage section 1008. The data for the
various processing of the CPU 1001 may be stored in the RAM 1003 as
needed. The CPU 1001, ROM 1002 and RAM 1003 are linked with each
other via a bus 1004. An input/output interface 1005 is also linked
to the bus 1004.
[0147] The following components are linked to the input/output
interface 1005: an input section 1006 (including a keyboard, a
mouse and the like), an output section 1007 (including displays
such as a cathode ray tube (CRT), a liquid crystal display (LCD), a
speaker and the like), a storage section 1008 (including a hard
disc and the like), and a communication section 1009 (including a
network interface card such as a LAN card, a modem and the like).
The communication section 1009 performs communication processing
via a network such as the Internet. A driver 1010 may also be
linked to the input/output interface 1005 as needed. A removable
medium 1011 such as a magnetic disc, an optical disc, a magnetic
optical disc and a semiconductor memory may be installed in the
driver 1010 as needed, so that the computer program read therefrom
is installed in the storage section 1008 as appropriate.
[0148] In the case where the foregoing series of processing is
achieved with software, programs forming the software are installed
from a network such as the Internet or a storage medium such as the
removable medium 1011.
[0149] It should be appreciated by those skilled in the art that
the storage medium is not limited to the removable medium 1011
shown in FIG. 10, which has program stored therein and is
distributed separately from the apparatus so as to provide the
programs to users. The removable medium 1011 may be, for example, a
magnetic disc (including a floppy disc (registered trademark)), a
compact disc (including a compact disc read-only memory (CD-ROM)
and a digital versatile disc (DVD)), a magneto optical disc
(including a mini disc (MD) (registered trademark)), and a
semiconductor memory. Alternatively, the storage medium may be the
hard discs included in the ROM 1002 and the storage section 1008 in
which programs are stored, and can be distributed to users along
with the device in which they are incorporated.
[0150] In addition, a program product storing machine-readable
instruction codes is further provided according to the embodiments
of the present disclosure. The method according to the above
embodiments of the present disclosure can be performed when the
instruction codes is read and executed by a machine
[0151] Accordingly, a storage medium for carrying the program
product in which machine-readable instruction codes are stored is
also provided in the present disclosure. The storage medium
includes but is not limited to a floppy disc, an optical disc, a
magnetic optical disc, a memory card, a memory stick and the
like.
[0152] The embodiments of the present disclosure may further relate
to the following electronic device. In the case that the electronic
device is applied at base station side, the electronic device may
be implemented as any types of evolved node B (eNB), such as a
macro eNB and a small eNB. The small eNB may be an eNB of a cell
having a smaller coverage than the macro cell, such as a pico-cell
eNB, a micro eNB and a home (femto) eNB. Alternatively, the
electronic device may be implemented as any other types of base
stations, such as a NodeB and a base transceiver station (BTS). The
electronic device may include a main body (also referred to a base
station device) configured to control wireless communication, and
one or more remote radio heads (RRHs) arranged at a position
different from a position of the main body. In addition, various
types of terminals to be described below can operate as a base
station by temporarily or semi-persistently performing a function
of the base station.
[0153] When being applied at a user equipment side, the electronic
device may be implemented as a mobile terminal (such as a smart
phone, a panel personnel computer (PC), a laptop PC, a portable
game terminal, a portable/dongle mobile router and a digital
camera) or a vehicle terminal (such as an automobile navigation
device). In addition, the electronic device may be a wireless
communication module (such as an integrated circuit module
including one or more wafers) mounted on each of the above
terminals.
[Application Examples of a Terminal Device]
[0154] FIG. 11 is a block diagram showing an example of a schematic
configuration of a smart phone 2500 to which the technology
according to the present disclosure may be applied. The smart phone
2500 includes a processor 2501, a memory 2502, a storage 2503, an
external connection interface 2504, a camera 2506, a sensor 2507, a
microphone 2508, an input apparatus 2509, a display apparatus 2510,
a speaker 2511, a radio communication interface 2512, one or more
antenna switches 2515, one or more antennas 2516, a bus 2517, a
battery 2518 and an auxiliary controller 2519.
[0155] The processor 2501 may be for example a CPU or a system on
chip (SoC), and controls functions of an application layer and an
additional layer of the smart phone 2500. The memory 2502 includes
RAM and ROM, and stores programs executed by the processor 2501 and
data. The storage 2503 may include a storage medium such as a
semiconductor memory and a hard disk. The external connection
interface 2504 refers to an interface connecting an external device
(such as a memory card and a universal serial bus (USB) device) to
the smart phone 2500.
[0156] The camera 2506 includes an image sensor (such as a
charge-coupled device (CCD) and a complementary metal oxide
semiconductor (CMOS)), and generates a captured image. The sensor
2507 may include a group of sensors such as a measurement sensor, a
gyroscope sensor, a geomagnetic sensor and an acceleration sensor.
The microphone 2508 converts voice inputted to the smart phone 2500
into an audio signal. The input apparatus 2509 includes for example
a touch sensor configured to detect touch on a screen of the
display apparatus 2510, a keypad, a keyboard, a button or a switch,
and receives an operation or information inputted by the user. The
display apparatus 2510 includes a screen (such as a liquid crystal
display (LCD) and an organic light-emitting diode (OLED) display),
and displays an output image of the smart phone 2500. The speaker
2511 converts the audio signal outputted from the smart phone 2500
into voice.
[0157] The radio communication interface 2512 supports any cellular
communication scheme (such as LTE and LTE-advanced), and performs
wireless communication. The radio communication interface 2512 may
generally include for example a baseband (BB) processor 2513 and a
radio frequency (RF) circuit 2514. The BB processor 2513 may
perform for example coding/decoding, modulation/demodulation and
multiplexing/demultiplexing, and perform various types of signal
processing for wireless communication. Meanwhile, the RF circuit
2514 may include for example a frequency mixer, a filter and an
amplifier, and transmit and receive a wireless signal via the
antenna 2516. The radio communication interface 2512 may be a chip
module on which the BB processor 2513 and the RF circuit 2514 are
integrated. As shown in FIG. 11, the radio communication interface
2512 may include multiple BB processors 2513 and multiple RF
circuits 2514. Although FIG. 11 shows the example in which the
radio communication interface 2512 includes multiple BB processors
2513 and multiple RF circuits 2514, the radio communication
interface 2512 may include a single BB processor 2513 or a single
RF circuit 2514.
[0158] In addition to the cellular communication scheme, the radio
communication interface 2512 may support an additional type of
wireless communication scheme, such as a short-distance wireless
communication scheme, a near field communication scheme and a
wireless local area network (LAN) scheme. In this case, the radio
communication interface 2512 may include a BB processor 2513 and an
RF circuit 2514 for each of the wireless communication schemes.
[0159] Each of the antenna switches 2515 switches a connection
destination of the antenna 2516 between multiple circuits (such as
circuits for different wireless communication schemes) included in
the radio communication interface 2512.
[0160] Each of the antennas 2516 includes one or more antenna
elements (such as multiple antenna elements included in the MIMO
antenna), and is for the radio communication interface 2512 to
transmit and receive a wireless signal. As shown in FIG. 11, the
smart phone 2500 may include multiple antennas 2516. Although FIG.
11 shows the example in which the smart phone 2500 includes
multiple antennas 2516, the smart phone 2500 may include a single
antenna 2516.
[0161] In addition, the smart phone 2500 may include antennas 2516
for different wireless to communication schemes. In this case, the
antenna switch 2515 may be omitted in the configuration of the
smart phone 2500.
[0162] The processor 2501, the memory 2502, the storage 2503, the
external connection interface 2504, the camera 2506, the sensor
2507, the microphone 2508, the input apparatus 2509, the display
apparatus 2510, the speaker 2511, the radio communication interface
2512 and the auxiliary controller 2519 are connected with one
another via the bus 2517. The battery 2518 supplies power to the
modules of the smart phone 2500 shown in FIG. 13 via a feed line.
The feed line is partially shown with a dash line in the figure.
The auxiliary controller 2519, for example, operates a minimum
necessary function of the smart phone 2500 in a sleep mode.
[0163] In the smart phone 2500 shown in FIG. 11, the transceivers
described in conjunction with FIG. 4 and FIG. 5 can be implemented
by the radio communication interface 2512. The storage described in
conjunction with FIG. 5 may be implemented by the memory 2502 and
the storage 2503. At least a portion of the functions of the units
described with reference to FIGS. 1 to 5 may be implemented by the
processor 2501 or the auxiliary controller 2519. For example, an
electric power consumption of the battery 2518 can be reduced in a
way of performing a portion of functions of the processor 2501 by
the auxiliary controller 2519. In addition, the processor 2501 or
auxiliary controller 2519 can perform at least a portion of
functions of the units described with reference to FIGS. 1 to 5 by
executing programs stored in the memory 2502 or storage 2503.
[Application Examples of a Base Station]
[0164] FIG. 12 is a block diagram showing an example of a schematic
configuration of an eNB to which the technology according to the
present disclosure can be applied. An eNB 2300 includes one or more
antennas 2310 and a base station device 2320. The base station
device 2320 may be connected to each of the antennas 2310 via a
radio frequency (RF) cable.
[0165] Each of the antennas 2310 includes one or more antenna
elements (such as multiple antenna elements included in a
multiple-input multiple-output (MIMO) antenna), and is for the base
station device 2320 to transmit and receive a wireless signal. As
shown in FIG. 12, the eNB 2300 may include multiple antennas 2310.
For example, the multiple antennas 2310 may be compatible with
multiple frequency bands used by the eNB 2300. Although FIG. 12
shows the example in which the eNB 2300 includes multiple antennas
2310, the eNB 2300 may include a single antenna 2310.
[0166] The base station device 2320 includes a controller 2321, a
memory 2322, a network interface 2323 and a radio communication
interface 2325.
[0167] The controller 2321 may be for example a CPU or a DSP, and
operates various functions of a high layer of the base station
device 2320. For example, the controller 2321 generates a data
package based on data of a signal processed by the radio
communication interface 2325, and transfers the generated package
via the network interface 2323. The controller 2321 may bundle data
from multiple baseband processors to generate a bundling package,
and transfers the generated bundling package. The controller 2321
may have a logical function for performing the following controls:
radio resource control, radio bearer control, mobility management,
admission control and scheduling. The control may be performed in
conjunction with a nearby eNB or core network node. The memory 2322
includes RAM and ROM, and stores programs to be executed by the
controller 2321 and various types of control data (such as a
terminal list, transmission power data and scheduling data).
[0168] The network interface 2323 is a communication interface for
connecting the base station device 2320 to a core network 2324. The
controller 2321 may communicate with a core network node or another
eNB via the network interface 2323. In this case, the eNB 2300 may
be connected with the core network node or other eNBs via a logic
interface (such as an interface Si and an interface X2). The
network interface 2323 may be a wired communication interface or a
radio communication interface for wireless backhaul routing. If the
network interface 2323 is a radio communication interface, the
network interface 2323 may use a frequency band for wireless
communication higher than that used by the radio communication
interface 2325.
[0169] The radio communication interface 2325 supports any cellular
communication scheme (such as Long Term Evolution (LTE) and
LTE-advanced), and provides a wireless connection to a terminal
located in a cell of the eNB 2300 via the antenna 2310. The radio
communication interface 2325 may generally include for example a BB
processor 2326 and an RF circuit 2327. The BB processor 2326 may
perform for example coding/decoding, modulation/demodulation and
multiplexing/demultiplexing, and performs various types of signal
processing of layers (such as L1, Media Access Control (MAC), Radio
Link Control (RLC) and Packet Data Convergence Protocol (PDCP)).
Instead of the controller 2321, the BB processor 2326 may have a
portion or all of the above logical functions. The BB processor
2326 may be a memory storing communication control programs, or a
module including a processor and a related circuit which are
configured to execute programs. In this way, the function of the BB
processor 2326 may be changed when the programs are updated. The
module may be a card or blade inserted into the slot of the base
station device 2320. Alternatively, the module may be a chip
mounted on the card or the blade. Meanwhile, the RF circuit 2327
may include for example a frequency mixer, a filter and an
amplifier, and transmit and receive a wireless signal via the
antenna 2310.
[0170] As shown in FIG. 12, the radio communication interface 2325
may include multiple BB processors 2326. For example, the multiple
BB processors 2326 may be compatible with the multiple frequency
bands used by the eNB 2300. As shown in FIG. 12, the radio
communication interface 2325 may include multiple RF circuits 2327.
For example, the multiple RF circuits 2327 may be compatible with
multiple antenna elements. Although FIG. 12 shows an example in
which the radio communication interface 2325 includes multiple BB
processors 2326 and multiple RF circuits 2327, the radio
communication interface 2325 may include a single BB processor 2326
or a single RF circuit 2327.
[0171] In the eNB 2300 shown in FIG. 12, the transceiver may be
realized by the radio communication interface 2325, and at least a
portion of functions of the units described in conjunction with
FIG. 7 and FIG. 8 may be realized by the controller 2321. For
example, the controller 2321 may perform at least a portion of
functions of the units described in conjunction with FIG. 7 and
FIG. 8 by performing programs stored in the memory 2322.
[Application Example of an Automobile Navigation Device]
[0172] FIG. 13 is a block diagram showing an example of a schematic
configuration of an automobile navigation device 1320 to which the
technology according to the present disclosure may be applied. The
automobile navigation device 1320 includes a processor 1321, a
memory 1322, a global positioning system (GPS) module 1324, a
sensor 1325, a data interface 1326, a content player 1327, a
storage medium interface 1328, an input apparatus 1329, a display
apparatus 1330, a speaker 1331, a radio communication interface
1333, one or more antenna switches 1336, one or more antennas 1337
and a battery 1338.
[0173] The processor 1321 may be for example a CPU or an SoC, and
controls a navigation function and additional function of the
automobile navigation device 1320. The memory 1322 includes RAM and
ROM, and stores programs executed by the processor 1321 and
data.
[0174] The GPS module 1324 determines the location of the
automobile navigation device 1320 (such as latitude, longitude and
height) with a GPS signal received from a GPS satellite. The sensor
1325 may include a group of sensors such as a gyroscope sensor, a
geomagnetic sensor and an air pressure sensor. The data interface
1326 is connected to for example an on-board network 1341 via a
terminal not shown, and acquires data generated by the automobile
(such as vehicle speed data).
[0175] The content player 1327 reproduces contents stored in a
storage medium (such as CD and DVD) which is inserted into the
storage medium interface 1328. The input apparatus 1329 includes
for example a touch sensor configured to detect touch on a screen
of the display apparatus 1330, a button or a switch, and receives
an operation or information inputted by the user. The display
apparatus 1330 includes a screen of a display such as an LCD or
OLED, and displays an image of navigation function or the
reproduced contents. The speaker 1331 outputs voice of the
navigation function or the reproduced contents.
[0176] The radio communication interface 1333 supports any cellular
communication scheme (such as LTE and LTE-advanced), and performs
wireless communication. The radio communication interface 1333 may
generally include for example a BB processor 1334 and an RF circuit
1335. The BB processor 1334 may perform for example
coding/decoding, modulation/demodulation and
multiplexing/demultiplexing, and perform various types of signal
processing for wireless communication. Meanwhile, the RF circuit
1335 may include for example a frequency mixer, a filter and an
amplifier, and transmit and receive a wireless signal via the
antenna 1337. The radio communication interface 1333 may be a chip
module on which the BB processor 1334 and the RF circuit 1335 are
integrated. As shown in FIG. 13, the radio communication interface
1333 may include multiple BB processors 1334 and multiple RF
circuits 1335. Although FIG. 13 shows the example in which the
radio communication interface 1333 includes multiple BB processors
1334 and multiple RF circuits 1335, the radio communication
interface 1333 may include a single BB processor 1334 or a single
RF circuit 1335.
[0177] In addition to the cellular communication scheme, the radio
communication interface 1333 may support an additional type of
wireless communication scheme, such as a short-distance wireless
communication scheme, a near field communication scheme and a
wireless LAN scheme. In this case, the radio communication
interface 1333 may include a BB processor 1334 and an RF circuit
1335 for each of the wireless communication schemes.
[0178] Each of the antenna switches 1336 switches a connection
destination of the antenna 1337 between multiple circuits (such as
circuits for different wireless communication schemes) included in
the radio communication interface 1333.
[0179] Each of the antennas 1337 includes one or more antenna
elements (such as multiple antenna elements included in the MIMO
antenna), and is for the radio communication interface 1333 to
transmit and receive a wireless signal. As shown in FIG. 13, the
automobile navigation device 1320 may include multiple antennas
1337. Although FIG. 13 shows the example in which the automobile
navigation device 1320 includes multiple antennas 1337, the
automobile navigation device 1320 may include a single antenna
1337.
[0180] In addition, the automobile navigation device 1320 may
include antennas 1337 for different wireless communication schemes.
In this case, the antenna switch 1336 may be to omitted in the
configuration of the automobile navigation device 1320.
[0181] The battery 1338 supplies power to the modules of the
automobile navigation device 1320 shown in FIG. 13 via a feed line.
The feed line is partially shown with a dash line in the drawing.
The battery 1338 accumulates the power provided from the
vehicle.
[0182] In the automobile navigation device 1320 shown in FIG. 13,
the transceivers described in conjunction with FIG. 4 and FIG. 5
may be implemented by the radio communication interface 1333. The
storage described in conjunction with FIG. 5 may be implemented by
the memory 1322. The processor 1321 may perform at least a portion
of functions of the units described in conjunction with FIG. 1 to
FIG. 5 by executing programs stored in the memory 1322.
[0183] The technology according to the present disclosure may be
further implemented as an on-board system (or a vehicle) 1340
including one or more of the automobile navigation device 1320, the
on-board network 1341 and a vehicle module 1342. The vehicle module
1342 generates vehicle data (such as a vehicle speed, a motor speed
and fault information) and outputs the generated data to the
on-board network 1341.
[0184] In the above description of the embodiments of the present
disclosure, features that are described and/or illustrated with
respect to one embodiment may be used in the same way or in a
similar way in one or more other embodiments, may be combined with
or instead of the features of the other embodiments.
[0185] It should be emphasized that the term "comprises/comprising"
used in this specification refers to the presence of features,
elements, steps or components, but does not preclude the presence
or addition of one or more other features, elements, steps or
components.
[0186] In the above embodiments and examples, the steps and/or
units are represented with reference numbers consists of numbers.
It should be understood by those skilled in the art that, these
reference numbers are only for convenience of the description and
drawing, and are not intended to represent an order of the steps
and units or to represent any other constraint.
[0187] In addition, the methods according to the present disclosure
are not limited to be executed in the time sequence described in
the specification, and may be executed in other time sequence,
parallel or independently. Therefore, the execution order of the
method described in the specification is not intended to limit the
technical scope of the present disclosure.
[0188] While the present disclosure has been disclosed with
reference to the specific embodiments thereof, it should be
understood that all of the above embodiments and examples are
illustrative rather than restrictive. Those skilled in the art will
appreciate that various modifications, improvements and equivalents
are possible, without departing from the spirit and scope of the
appended claims. These modifications, improvements or equivalents
are intended to be included within the protection scope of the
present disclosure.
* * * * *