U.S. patent application number 16/909961 was filed with the patent office on 2020-10-08 for method for use in transmitting signal, terminal device, and network device.
The applicant listed for this patent is GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.. Invention is credited to Hai TANG.
Application Number | 20200322942 16/909961 |
Document ID | / |
Family ID | 1000004915537 |
Filed Date | 2020-10-08 |
United States Patent
Application |
20200322942 |
Kind Code |
A1 |
TANG; Hai |
October 8, 2020 |
METHOD FOR USE IN TRANSMITTING SIGNAL, TERMINAL DEVICE, AND NETWORK
DEVICE
Abstract
Disclosed is a method for use in transmitting a signal, a
terminal device, and a network device. The method includes: a
terminal device receives a signal transmitted by a network device
employing multiple downlink transmission beam groups; and the
terminal device transmits first information to the network device,
thus allowing the network device to determine a first downlink
transmission beam group from the multiple downlink transmission
beam groups, and at least one downlink transmission beam group of
the multiple downlink transmission beam groups comprising multiple
downlink transmission beams.
Inventors: |
TANG; Hai; (Dongguan,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. |
Dongguan |
|
CN |
|
|
Family ID: |
1000004915537 |
Appl. No.: |
16/909961 |
Filed: |
June 23, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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16483418 |
Aug 3, 2019 |
10728898 |
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PCT/CN2017/073002 |
Feb 6, 2017 |
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16909961 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W 72/046 20130101;
H04W 74/0833 20130101 |
International
Class: |
H04W 72/04 20060101
H04W072/04; H04W 74/08 20060101 H04W074/08 |
Claims
1. A method for transmitting a signal, comprising: receiving, by a
terminal device, a signal sent by a network device by using a
plurality of downlink transmission beam groups; and sending, by the
terminal device, first information to the network device, so that
the network device determines a first downlink transmission beam
group from the plurality of downlink transmission beam groups, at
least one of the plurality of downlink transmission beam groups
comprising a plurality of downlink transmission beams.
2. The method according to claim 1, wherein, the first information
is a random access preamble sequence, and at least one of the
random access preamble sequence and a physical random access
channel resource used to send the random access preamble sequence
corresponds to the first downlink transmission beam group.
3. The method according to claim 1, wherein, after sending, by the
terminal device, the first information to the network device, the
method further comprises: sending, by the terminal device, second
information to the network device, so that the network device
determines a first downlink transmission beam from the plurality of
downlink transmission beam groups, the first downlink transmission
beam being a downlink transmission beam that is expected by the
terminal device for the network device to transmit a subsequent
signal.
4. The method according to claim 3, wherein, the first downlink
transmission beam is a beam in the first downlink transmission beam
group.
5. The method according to claim 3, wherein, before sending, by the
terminal device, the second information to the network device, the
method further comprises: receiving, by the terminal device, third
information sent by the network device, the third information being
used to indicate whether the terminal device needs to send the
second information to the network device; and determining, by the
terminal device, whether to send the second information to the
network device according to the third information.
6. The method according to claim 5, wherein, the third information
is carried in a random access response message sent by the network
device to the terminal device, or the second information is carried
in a message used to send an identifier of the terminal device in a
random access process, or the third information is carried in a
random access response message sent by the network device to the
terminal device and the second information is carried in a message
used to send an identifier of the terminal device in a random
access process.
7. The method according to claim 3, wherein, the second information
is an identifier of a signal carried on the first downlink
transmission beam received by the terminal device, and the signal
carried on the first downlink transmission beam is at least one of
following signals: a primary synchronization signal, a secondary
synchronization signal, a broadcast signal, a reference signal, and
a signal carrying a system message.
8. A terminal device for transmitting a signal, comprising: a
memory for storing instructions; a processor for performing the
instructions stored in the memory; an input interface; and an
output interface, wherein the memory, the processor, the input
interface, and the output interface are connected by a bus system,
and the processor is configured to: receive, via the input
interface, a signal sent by a network device by using a plurality
of downlink transmission beam groups; and send, via the output
interface, first information to the network device, so that the
network device determines a first downlink transmission beam group
from the plurality of downlink transmission beam groups, at least
one of the plurality of downlink transmission beam groups
comprising a plurality of downlink transmission beams.
9. The terminal device according to claim 8, wherein, the first
information is a random access preamble sequence, and at least one
of the random access preamble sequence and a physical random access
channel resource used to send the random access preamble sequence
corresponds to the first downlink transmission beam group.
10. The terminal device according to claim 8, wherein the processor
is further configured to: send, via the output interface, second
information to the network device, so that the network device
determines a first downlink transmission beam from the plurality of
downlink transmission beam groups, the first downlink transmission
beam being a downlink transmission beam that is expected by the
terminal device for the network device to transmit a subsequent
signal.
11. The terminal device according to claim 10, wherein, the first
downlink transmission beam is a beam in the first downlink
transmission beam group.
12. The terminal device according to claim 10, wherein the
processor is further configured to: receive, via the input
interface, third information sent by the network device, the third
information being used to indicate whether the terminal device
needs to send the second information to the network device; and
determine whether to send the second information to the network
device according to the third information.
13. The terminal device according to claim 12, wherein, the third
information is carried in a random access response message sent by
the network device to the terminal device, or the second
information is carried in a message used to send an identifier of
the terminal device in a random access process, or the third
information is carried in a random access response message sent by
the network device to the terminal device and the second
information is carried in a message used to send an identifier of
the terminal device in a random access process.
14. The terminal device according to claim 10, wherein, the second
information is a signal identifier carried on the first downlink
transmission beam received by the terminal device, and the signal
carried on the first downlink transmission beam is at least one of
following signals: a primary synchronization signal, a secondary
synchronization signal, a broadcast signal, a reference signal, and
a signal carrying a system message.
15. A network device for transmitting a signal, comprising: a
memory for storing instructions; a processor for performing the
instructions stored in the memory; an input interface; and an
output interface, wherein the memory, the processor, the input
interface, and the output interface are connected by a bus system,
and the processor is configured to: send, via the output interface,
a signal to a terminal device by using a plurality of downlink
transmission beam groups; receive, via the input interface, first
information sent by the terminal device; and determine a first
downlink transmission beam group from the plurality of downlink
transmission beam groups according to the first information, at
least one of the plurality of downlink transmission beam groups
comprising a plurality of downlink transmission beams.
16. The network device according to claim 15, wherein, the first
information is a random access preamble sequence, and the processor
is configured to perform one of the following: determine the first
downlink transmission beam group corresponding to the random access
preamble sequence from the plurality of downlink transmission beam
groups, according to the random access preamble sequence; determine
the first downlink transmission beam group corresponding to a
physical random access channel resource used to send the random
access preamble sequence, according to the physical random access
channel resource; and determine the first downlink transmission
beam group corresponding to both the random access preamble
sequence and a physical random access channel resource used to send
the random access preamble sequence, according to the random access
preamble sequence and the physical random access channel
resource.
17. The network device according to claim 15, wherein the processor
is further configured to: receive, via the input interface, second
information sent by the terminal device; and determine the first
downlink transmission beam from the plurality of downlink
transmission beam groups according to the second information, the
first downlink transmission beam being a downlink transmission beam
that is expected by the terminal device for the network device to
transmit a subsequent signal.
18. The network device according to claim 17, wherein, the first
downlink transmission beam is a beam in the downlink transmission
beam group, and the processor is configured to: determine the first
downlink transmission beam from the first downlink transmission
beam group according to the second information.
19. The network device according to claim 17, wherein the processor
is further configured to: send, via the output interface, third
information to the terminal device, the third information being
used to indicate whether the terminal device needs to send the
second information to the network device; and receive, via the
input interface, the second information sent by the terminal device
according to the third information.
20. The network device according to claim 19, wherein, the third
information is carried in a random access response message sent by
the network device to the terminal device, or the second
information is carried in a message used to send an identifier of
the terminal device in a random access process, or the third
information is carried in a random access response message sent by
the network device to the terminal device and the second
information is carried in a message used to send an identifier of
the terminal device in a random access process.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of U.S. application Ser.
No. 16/483,418, filed Aug. 3, 2019, which is a U.S. national phase
application of International Application No. PCT/CN2017/073002,
filed Feb. 6, 2017, the entire disclosures of which are
incorporated herein by reference.
TECHNICAL FIELD
[0002] The embodiments of the present application relate to the
communication field, and more particularly, to a method, a terminal
device, and a network device for transmitting a signal.
BACKGROUND
[0003] In a multi-beam system, a terminal device and a network
device may train a plurality of beams by beamforming, and different
beams may correspond to different directions and different coverage
areas. Generally, the network device does not know performance of
downlink transmission beams, and uses all downlink transmission
beams in a system to send signals to the terminal device, resulting
in a large system signaling overhead.
SUMMARY
[0004] In view of this, the embodiments of the present application
provide a method, a terminal device, and a network device for
transmitting a signal, which can reduce system signaling
overhead.
[0005] In a first aspect, there is provided a method for
transmitting a signal, including: receiving, by a terminal device,
a signal sent by a network device by using a plurality of downlink
transmission beam groups; and sending, by the terminal device,
first information to the network device, so that the network device
determines a first downlink transmission beam group from the
plurality of downlink transmission beam groups, at least one of the
plurality of downlink transmission beam groups including a
plurality of downlink transmission beams.
[0006] Each downlink transmission beam group includes at least one
downlink transmission beam. The first information may be an
implicit indication or an explicit indication, the explicit
indication may be indicated by several bits, and the implicit
indication may make the downlink transmission beam groups
correspond to transmission characteristics and feed back to the
network device through a certain transmission characteristic.
[0007] In addition, a beam is physically invisible with respect to
the terminal device in a system. After receiving the signal sent by
the network device by a plurality of beams, the terminal device may
identify difference of the beams by using difference of the
signals. That is to say, the terminal device may feed back to the
network device by using the transmission characteristic indicated
by a certain signal, and the network device may determine the
downlink transmission beam in which group is preferable according
to the transmission characteristic fed back by the terminal
device.
[0008] When there are a plurality of downlink transmission beams,
the downlink transmission beams are grouped by the transmission
characteristic, and after receiving the signals sent by the
plurality of downlink transmission beams, the terminal device may
select a signal with better transmission characteristic and notify
the network device of the transmission characteristic adopted by
the signal. After receiving the transmission characteristic, the
network device may determine the corresponding downlink
transmission beam group, so that the network device only uses this
part of the beams to perform signal transmission later, thereby
reducing the system signaling overhead.
[0009] In a possible implementation manner, the first information
is a random access preamble sequence, and the random access
preamble sequence and/or a physical random access channel resource
used to send the random access preamble sequence correspond to the
first downlink transmission beam group.
[0010] By corresponding the random access preamble sequence and/or
the physical random access channel resource to the downlink
transmission beam group, a partition granularity of the random
access preamble sequence and/or the physical random access channel
resource of each group is relatively large, thereby reducing a
collision probability of random access.
[0011] The first downlink transmission beam group is indicated to
the network device by using the first information, which may be
directly indicated by the first information, or may be indicated by
other transmission characteristic of the first information, such as
occupied frequency domain resource and/or time domain resource.
[0012] In a possible implementation manner, after the terminal
device sends the first information to the network device, the
method further includes: sending, by the terminal device, second
information to the network device, so that the network device
determines a first downlink transmission beam from the plurality of
downlink transmission beam groups, the first downlink transmission
beam being a downlink transmission beam that is expected by the
terminal device for the network device to transmit a subsequent
signal.
[0013] In a possible implementation manner, the first downlink
transmission beam is a beam in the first downlink transmission beam
group.
[0014] Optionally, the fed back first downlink transmission beam
may be a beam with the best transmission performance selected by
the terminal device.
[0015] Optionally, the first downlink transmission beam may not
belong to the first downlink transmission beam group. For example,
after indicating the first downlink transmission beam group to the
network device, the terminal device finds that the beam with the
best performance belongs to other group, and then the terminal
device may directly feed back the first downlink transmission beam
to the network device.
[0016] A two-step indication method is used to feed back the
downlink transmission beam expected by the terminal device to the
network device, which can greatly reduce the signaling overhead.
Moreover, by the manner in which the random access preamble
sequence and/or physical random access channel resource directly
indicate the beam group, the collision probability of random access
may be reduced.
[0017] In a possible implementation manner, before the terminal
device sends the second information to the network device, the
method further includes: receiving, by the terminal device, third
information sent by the network device, the third information being
used to indicate whether the terminal device needs to send the
second information to the network device; and according to the
third information, determining, by the terminal device, whether to
send the second information to the network device.
[0018] Further, the third information is carried in a random access
response message sent by the network device to the terminal device,
and/or the second information is carried in a message used to send
an identifier of the terminal device in a random access
process.
[0019] In a possible implementation manner, the second information
is an identifier of a signal carried on the first downlink
transmission beam received by the terminal device, and the signal
carried on the first downlink transmission beam is at least one of
following signals: a primary synchronization signal, a secondary
synchronization signal, a broadcast signal, a reference signal, and
a signal carrying a system message.
[0020] In a second aspect, there is provided a method for
transmitting a signal, including: sending, by a network device, a
signal to a terminal device by using a plurality of downlink
transmission beam groups; receiving, by the network device, first
information sent by the terminal device; and determining, by the
network device, a first downlink transmission beam group from the
plurality of downlink transmission beam groups according to the
first information, at least one of the plurality of downlink
transmission beam groups including a plurality of downlink
transmission beams.
[0021] In a possible implementation manner, the first information
is a random access preamble sequence, and the determining, by the
network device, the first downlink transmission beam group from the
plurality of downlink transmission beam groups according to the
first information, includes: determining, by the network device,
the first downlink transmission beam group corresponding to the
random access preamble sequence from the plurality of downlink
transmission beam groups, according to the random access preamble
sequence, or determining, by the network device, the first downlink
transmission beam group corresponding to a physical random access
channel resource used to send the random access preamble sequence
from the plurality of downlink transmission beam groups, according
to the physical random access channel resource, or determining, by
the network device, the first downlink transmission beam group
corresponding to both the random access preamble sequence and a
physical random access channel resource used to send the random
access preamble sequence from the plurality of downlink
transmission beam groups, according to the random access preamble
sequence and the physical random access channel resource.
[0022] In a possible implementation manner, after the network
device receives the first information sent by the terminal device,
the method further includes: receiving, by the network device,
second information sent by the terminal device; and determining, by
the network device, the first downlink transmission beam from the
plurality of downlink transmission beam groups according to the
second information, the first downlink transmission beam being a
downlink transmission beam that is expected by the terminal device
for the network device to transmit a subsequent signal.
[0023] In a possible implementation manner, the first downlink
transmission beam is a beam in the downlink transmission beam
group, and the determining, by the network device, the first
downlink transmission beam from the plurality of downlink
transmission beam groups according to the second information,
includes: determining, by the network device, the first downlink
transmission beam from the first downlink transmission beam group
according to the second information.
[0024] In a possible implementation manner, before the network
device receives the second information sent by the terminal device,
the method further includes: sending, by the network device, third
information to the terminal device, the third information being
used to indicate whether the terminal device needs to send the
second information to the network device; and receiving, by the
network device, the second information sent by the terminal device,
including: receiving, by the network device, the second information
sent by the terminal device according to the third information.
[0025] Further, the third information is carried in a random access
response message sent by the network device to the terminal device,
and/or the second information is carried in a message used to send
an identifier of the terminal device in a random access
process.
[0026] In a possible implementation manner, the second information
is an identifier of a signal carried on the first downlink
transmission beam received by the terminal device, and the signal
carried on the first downlink transmission beam is at least one of
following signals: a primary synchronization signal, a secondary
synchronization signal, a broadcast signal, a reference signal, and
a signal carrying a system message.
[0027] In a third aspect, there is provided a terminal device for
performing the method in the first aspect or any of possible
implementations of the first aspect. In particular, the terminal
device includes a unit for performing the method in the first
aspect or any of the possible implementations of the first
aspect.
[0028] In a fourth aspect, there is provided a network device for
performing the method in the second aspect or any of possible
implementations of the first aspect. In particular, the terminal
device includes a unit for performing the method in the second
aspect or any of the possible implementations of the second
aspect.
[0029] In a fifth aspect, there is provided a terminal device. The
terminal device includes: a memory, a processor, an input
interface, and an output interface. The memory, the processor, the
input interface, and the output interface are connected by a bus
system. The memory is used for storing instructions, and the
processor is used to perform the instructions stored in the memory,
so as to perform the method in the first aspect or any of the
possible implementations of the first aspect described above.
[0030] In a sixth aspect, there is provided a network device. The
network device includes: a memory, a processor, an input interface,
and an output interface. The memory, the processor, the input
interface, and the output interface are connected by a bus system.
The memory is used for storing instructions, and the processor is
used to perform the instructions stored in the memory, so as to
perform the method in the second aspect or any of the possible
implementations of the second aspect described above.
[0031] In a seventh aspect, there is provided a computer storage
medium, for storing computer software instructions used for
performing the method in the first aspect or any of the possible
implementations of the first aspect described above, or the method
in the second aspect or any of the possible implementations of the
second aspect described above, including a program designed to
perform the above aspects.
[0032] These and other aspects of the present application will be
more concise and understandable from description of following
embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0033] FIG. 1 shows a schematic diagram of an application scenario
according to an embodiment of the present application.
[0034] FIG. 2 shows a schematic block diagram of a random access
method according to an embodiment of the present application.
[0035] FIG. 3 shows a flowchart of a random access process.
[0036] FIG. 4 shows another schematic block diagram of a method for
transmitting a signal according to an embodiment of the present
application.
[0037] FIG. 5 shows a schematic block diagram of a terminal device
for transmitting a signal according to an embodiment of the present
application.
[0038] FIG. 6 shows a schematic block diagram of a network device
for transmitting a signal according to an embodiment of the present
application.
[0039] FIG. 7 shows another schematic block diagram of a terminal
device for transmitting a signal according to an embodiment of the
present application.
[0040] FIG. 8 shows another schematic block diagram of a network
device for transmitting a signal according to an embodiment of the
present application.
DETAILED DESCRIPTION
[0041] Technical solutions in embodiments of the present
application will be clearly and completely described below with
reference to drawings in the embodiments of the present
application.
[0042] It should be understood that the technical solutions in the
embodiments of the present application may be applied to various
communication systems, for example, Global System of Mobile
communication (GSM) system, Code Division Multiple Access (CDMA)
system, Wideband Code Division Multiple Access (WCDMA) system,
General Packet Radio Service (GPRS), Long Term Evolution (LTE)
system, LTE Frequency Division Duplex (FDD) system, LTE Time
Division Duplex (TDD), Universal Mobile Telecommunication System
(UMTS), Worldwide Interoperability for Microwave Access (WiMAX)
communication system or future 5G system, and the like.
[0043] In particular, the technical solutions in the embodiments of
the present application may be applied to various communication
systems based on non-orthogonal multiple access technology, such as
Sparse Code Multiple Access (SCMA) system, Low Density Signature
(LDS) system, and the like, and the SCMA system and the LDS system
may also be referred to as other names in the field of
communication; further, the technical solutions in the embodiments
of the present application may be applied to a multi-carrier
transmission system adopting a non-orthogonal multiple access
technology, for example, Orthogonal Frequency Division Multiplexing
(OFDM), Filter Bank Multi-Carrier (FBMC), Generalized Frequency
Division Multiplexing (GFDM), Filtered-OFDM (F-OFDM) system, and
the like adopting the non-orthogonal multiple access
technology.
[0044] The terminal device in the embodiments of the present
application may refer to User Equipment (UE), an access terminal, a
user unit, a user station, a mobile station, a mobile platform, a
remote station, a remote terminal, a mobile device, a user
terminal, a terminal, a wireless communication device, a user agent
or a user device. The access terminal may be a cellular phone, a
cordless phone, a Session Initiation Protocol (SIP) phone, a
Wireless Local Loop (WLL) station, a Personal Digital Assistant
(PDA), a handheld device with wireless communication capability, a
computing device or other processing devices connected to a
wireless modem, an in-vehicle device, a wearable device, a terminal
device in a future 5G network or a terminal device in future Public
Land Mobile Network (PLMN), and the like, which is not limited in
the embodiments of the present application.
[0045] The network device in the embodiments of the present
application may be a device for communicating with a terminal
device. The network device may be a Base Transceiver Station (BTS)
in GSM or CDMA, or may be a NodeB (NB) in a WCDMA system, or may be
an Evolutional NodeB (eNB or eNodeB) in the LTE system, or may be a
wireless controller in a Cloud Radio Access Network (CRAN)
scenario, or the network device may be a relay station, an access
point, an in-vehicle device, a wearable device, a network device in
a future 5G network or a network device in a future evolved PLMN
network, and the like, which is not limited in the embodiments of
the present application.
[0046] FIG. 1 is a schematic diagram showing an application
scenario according to an embodiment of the present application. A
communication system in FIG. 1 may include a terminal device 10 and
a network device 20. The network device 20 is configured to provide
communication service for the terminal device 10 and access a core
network. The terminal device 10 accesses the network by searching
for a synchronization signal, a broadcast signal, and the like sent
by the network device 20, thereby performing communication with the
network. The arrows shown in FIG. 1 may represent uplink/downlink
transmissions by a cellular link between the terminal device 10 and
the network device 20.
[0047] The communication system in FIG. 1 may adopt multi-beam
technology. Specifically, for a downlink, the network device may
have a plurality of Downlink Transmit Beams (DL Tx Beam), and the
terminal device may have a plurality of Downlink Receive Beams (DL
Rx Beam); and for a uplink, the terminal device may have a
plurality of Uplink Transmit Beams (UL Tx Beam), and the network
device may have a plurality of Uplink Receive Beams (UL Rx
Beam).
[0048] Generally, since the network device does not know which
downlink transmission beams have better performance, in order to
improve gain of the signal, the network device uses each downlink
transmission beam of all downlink transmission beams to send a
downlink signal to the terminal device. For example, the network
device may send D1 downlink signals to the terminal device by using
D1 downlink transmit beams, and the terminal device may receive D1
downlink signals by using D1 downlink receive beams. As a result,
the overhead of system signaling is relatively large, especially in
the case where the number of downlink transmission beams is
large.
[0049] Specifically, FIG. 2 shows a schematic block diagram of a
random access method 100 according to an embodiment of the present
application. The method 100 may be applied to the wireless
communication system shown in FIG. 1, which is not limited in the
embodiments of the present application. The method 100 includes the
following steps.
[0050] In step S110, a terminal device receives a signal sent by a
network device by using a plurality of downlink transmission beam
groups.
[0051] In step S120, the terminal device sends first information to
the network device, so that the network device determines a first
downlink transmission beam group from the plurality of downlink
transmission beam groups, at least one of the plurality of downlink
transmission beam groups including a plurality of downlink
transmission beams.
[0052] Specifically, in order to reduce the overhead of system
signaling, all the downlink transmission beams may be grouped, and
the terminal device may select a better downlink transmission beam
by measuring signals of all received downlink transmission beams,
and feed back to the network device by using transmission
characteristic corresponding to the downlink transmission beam, so
that the network device may determine which group of downlink
transmission beams the terminal expects for according to the
received transmission characteristic, and may only use a part of
the downlink transmission beams for signal transmission later,
which reduces the overhead of system signaling.
[0053] It should be understood that a beam is physically invisible
to the terminal device in a system. After receiving the signal sent
by the network device by a plurality of beams, the terminal device
may identify difference of the beams by using difference of
signals. That is to say, the terminal device may feed back to the
network device by using the transmission characteristic indicated
by a certain signal, and the network device may determine which
downlink transmission beam group is preferable according to the
transmission characteristic fed back by the terminal device.
[0054] Optionally, the network device may group the downlink
transmission beams in the system according to certain criteria,
such as the number of terminal devices in different downlink
transmission beams, and the grouped downlink transmission beams may
be recorded as a beam group 1, a beam group 2 . . . and a beam
group N, where, each beam group may include one or more downlink
transmission beams. After receiving the signal sent by the network
device according to the plurality of beams, the terminal device may
select one or more signals by measurement, for example, the
selected signal may be a signal with better performance, and the
terminal device indicates the selected beam group to the network
device by using the transmission characteristic indicated by the
signal. For example, the terminal device may receive a system
message that is sent by using the plurality of beams, and each
system message indicates a random access preamble sequence
corresponding to the adopted beam, where, if the random access
preamble sequences corresponding to the beams in the same beam
group are the same, the terminal device may initiate random access
to the network device according to the random access preamble
sequence indicated by the selected signal. The network device may
determine which beam group has better performance according to the
received random access preamble sequence, and use this beam group
as a reference to send a subsequent signal to the terminal
device.
[0055] It should be understood that the random access preamble
sequence only serves as an identifier of the beam group, and other
transmission characteristics may also be used. Those skilled in the
art understand that several bits may be used to explicitly indicate
the selected beam group, and the number of the bits is related to
the number of the beam groups. For example, if there are 8 beam
groups, then 3 bits may be used to indicate the beam groups, for
example, it is possible to configure 000 as a beam group 0,
configure 0001 as a beam group 1, and so on. The foregoing is
merely an example, and the embodiments of the present application
are not limited thereto.
[0056] Optionally, in the embodiments of the present application,
the first information is a random access preamble sequence, and the
random access preamble sequence and/or a physical random access
channel resource used to send the random access preamble sequence
correspond to the first downlink transmission beam group.
[0057] Specifically, the network device may send the system message
to the terminal device by using a plurality of downlink
transmission beams, and the system messages carried on the beams of
the same beam group may indicate the same random access preamble
sequence and/or the same physical random access channel resource.
Similarly, system messages carried on beams of different beam
groups may indicate different random access preamble sequences
and/or different physical random access channel resources. Next,
the terminal device initiates random access to the network device
by using a random access preamble sequence and/or a physical random
access channel resource indicated by the system message carried on
the selected downlink transmission beam. The network device may
determine, according to received random access preamble sequence or
received physical random access channel resource, which one of the
downlink transmission beam groups is selected by the terminal
device.
[0058] The random access technology is the primary content of
communication between a terminal and a network in a mobile
communication system. In a wireless cellular network, the terminal
initiates a connection request to the network through a random
access process. For ease of understanding, the random access
process will be briefly described below with reference to FIG. 3.
As shown in FIG. 3, the random access process mainly includes
following contents.
[0059] Msg1, the first is sending a random access preamble signal.
The main purpose is that the network device may correctly estimate
a transmission delay of the terminal device, and solve a conflict
problem that a plurality of terminal devices simultaneously
initiate the access request.
[0060] Msg2, feedback information sent by the network device to the
terminal may include the transmission delay required for uplink
synchronization and an access overload condition of the current
system. In addition, the network device also feeds back the uplink
resource location allocated to the accessed terminal device to the
terminal.
[0061] Msg3, the terminal device may send its own Cell Radio
Network Temporary Identifier (C-RNTI) on the designated uplink
resource.
[0062] Msg4, the network device feeds back conflict resolution
information to the terminal device terminal. At this point, the
random access process may completely solve the conflict problem
caused by a multi-terminal device requesting to access the system
at the same time.
[0063] In the case that the number of downlink transmission beams
is small, the network device may group the random access preamble
sequence and/or the physical random access channel resource
according to the number of downlink transmission beams. The random
access preamble sequence and/or the physical random access channel
resource indicated by the system message transmitted on different
downlink transmission beams are different. If the terminal device
recommends a certain downlink transmission beam, random access is
performed according to the corresponding indication. For example, a
corresponding random access preamble sequence is sent to the
network device or the corresponding physical random access channel
resource is used to send the random access preamble sequence, that
is, the network device may completely determine the downlink
transmission beam selected by the terminal device through Msg1 in
FIG. 3.
[0064] In the case that the number of downlink transmission beams
is large, if the foregoing division manner is adopted, the division
granularity of the random access preamble sequence and/or the
physical random access channel resource is small, which may cause
an increase in random access collision. In order to reduce the
probability of the random access collision, the network device
groups the random access preamble sequence and/or the physical
random access channel resource according to the number of divided
downlink transmission beam groups, the random access preamble
sequence and/or the physical random access channel resources
indicated by the system message transmitted on different downlink
transmission beam groups are different, and the random access
preamble sequence and/or the physical random access channel
resource indicated by the system message transmitted on the beam of
the same downlink transmission beam group are the same. Similarly,
if the terminal device recommends a certain downlink transmission
beam, random access is performed according to its corresponding
indication. For example, a corresponding random access preamble
sequence is sent to the network device or the corresponding
physical random access channel resource is used to send the random
access preamble sequence, that is, the network device may determine
the downlink transmission beam group selected by the terminal
device through Msg1 in FIG. 3.
[0065] Further, after the terminal device sends the first
information to the network device, the method further includes:
sending, by the terminal device, second information to the network
device, so that the network device determines a first downlink
transmission beam from the plurality of downlink transmission beam
groups, the first downlink transmission beam being a downlink
transmission beam that is expected by the terminal device for the
network device to transmit a subsequent signal.
[0066] After the terminal device indicates the selected certain
downlink transmission beam group to the network device, the
terminal device may carry information indicating the certain
downlink transmission beam selected by the terminal device in the
next uplink message. Those skilled in the art understand that
several bits may be used to explicitly indicate a certain downlink
transmission beam. It should be understood that the selected
certain downlink transmission beam here may be a beam in one of the
selected certain downlink transmission beam groups, or may be a
beam in another beam group. For example, after the terminal device
indicates the first downlink transmission beam group to the network
device, the terminal device may move to another place, and the
terminal device may find that the beam in other groups may be
better, therefore, the terminal device may directly feed back to
the network device related information of the selected downlink
transmission beam, and the network device may directly determine
the downlink transmission beam according to the related information
of the downlink transmission beam selected by the terminal device.
If the terminal device feeds back a specific downlink transmission
beam to the network device, the downlink transmission beam is still
a better beam that was selected before, and the terminal device may
further send the identifier of the beam in the downlink
transmission beam group that was selected before to the network
device. The identifier may also be an identifier in the plurality
of beams received before by the downlink transmission beam selected
by the terminal device. For example, the terminal device may
receive D2 downlink signals sent by the network device through D2
downlink transmission beams before initiating the random access,
and if the terminal device selects a better downlink signal in the
D2 downlink signals, the terminal device may directly feed back the
identifier of the selected downlink signal to the network
device.
[0067] It should be understood that the foregoing downlink signal
may be a primary synchronization signal, a secondary
synchronization signal, a broadcast signal, a reference signal, a
signal carrying a system message, or some other new signals, or may
be a combination of various signals, which is not limited in the
embodiments of the present application.
[0068] It should also be understood that the second information may
be carried in the Msg3 of FIG. 3, or may be carried in any uplink
message after the random access succeeds. If the second information
is carried in the Msg3 in FIG. 3, the network device may also send
a random access response message to the terminal device by adopting
all or part of the beams in the first downlink transmission beam
group recommended by the terminal device, and after receiving the
random access response message, the terminal device may further
send the Msg3 to the network device, the Msg3 carrying the second
information.
[0069] Specifically, after receiving the first information sent by
the terminal device, the network device may further send third
information to the terminal device, the third information
specifically indicating whether the terminal device needs to send
the second information. For example, one bit may be carried in a
certain downlink message after the random access, where 0 may mean
that the second information needs to be sent, and 1 may mean that
the second information does not need to be sent. It is described
only in this example, which is not limited in the embodiments of
the present application.
[0070] Optionally, the third information may be carried in the Msg2
in FIG. 3, that is, in a random access response message.
[0071] It should also be understood that the downlink transmission
beam group and the downlink transmission beam indicated by the
terminal device are only used as a reference for sending signals by
the network device, and the network device does not necessarily
send signals by using the downlink transmission beam group or the
downlink transmission beam selected by the terminal device. In
addition, after determining a certain downlink transmission beam
group, the network device may not require the terminal device to
further feed back the downlink transmission beam with the best
performance in the downlink transmission beam group, and may
directly adopt all or part of the beams in the group for downlink
transmission.
[0072] FIG. 4 shows a schematic block diagram of a method 200 for
transmitting a signal according to an embodiment of the present
application. The method 200 may be applied to the wireless
communication system shown in FIG. 1, which is not limited in the
embodiments of the present application. The method 200 includes
following steps.
[0073] In step 210, a network device sends a signal to a terminal
device by using a plurality of downlink transmission beam
groups.
[0074] In step 220, the network device receives first information
sent by the terminal device.
[0075] In step 230, the network device determines a first downlink
transmission beam group from the plurality of downlink transmission
beam groups according to the first information, at least one of the
plurality of downlink transmission beam groups including a
plurality of downlink transmission beams.
[0076] Therefore, the method for transmitting a signal in the
embodiments of the present application can reduce system signaling
overhead.
[0077] Optionally, in the embodiments of the present application,
the first information is a preamble sequence of random access (a
random access preamble sequence), the determining, by the network
device, the first downlink transmission beam group from the
plurality of downlink transmission beam groups according to the
first information, includes: determining, by the network device,
the first downlink transmission beam group corresponding to the
preamble sequence of random access from the plurality of downlink
transmission beam groups, according to the preamble sequence of
random access, or determining, by the network device, the first
downlink transmission beam group corresponding to a channel
resource of physical random access (a physical random access
channel resource) used to send the preamble sequence of random
access from the plurality of downlink transmission beam groups,
according to the channel resource of physical random access, or
determining, by the network device, the first downlink transmission
beam group corresponding to both the preamble sequence of random
access and the channel resource of physical random access used to
send the preamble sequence of random access from the plurality of
downlink transmission beam groups, according to the preamble
sequence of random access and the channel resource of physical
random access.
[0078] In the case that the number of downlink transmission beams
is large, the network device groups the random access preamble
sequence and/or the physical random access channel resource
according to the number of divided downlink transmission beam
groups, the random access preamble sequence and/or the physical
random access channel resources indicated by the system message
transmitted on different downlink transmission beam groups are
different, and the random access preamble sequence and/or the
physical random access channel resource indicated by the system
message transmitted on the beam of the same downlink transmission
beam group are the same. Therefore, the probability of random
access collision can be reduced.
[0079] Optionally, in the embodiments of the present application,
after the network device receives the first information sent by the
terminal device, the method further includes: receiving, by the
network device, second information sent by the terminal device; and
determining, by the network device, the first downlink transmission
beam from the plurality of downlink transmission beam groups
according to the second information, the first downlink
transmission beam being a downlink transmission beam that is
expected by the terminal device for the network device to transmit
a subsequent signal.
[0080] Optionally, in the embodiments of the present application,
the first downlink transmission beam is a beam in the downlink
transmission beam group, and the determining, by the network
device, the first downlink transmission beam from the plurality of
downlink transmission beam groups according to the second
information, includes: determining, by the network device, the
first downlink transmission beam from the first downlink
transmission beam group according to the first information and the
second information.
[0081] Optionally, in the embodiments of the present application,
before the network device receives the second information sent by
the terminal device, the method further includes: sending, by the
network device, third information to the terminal device, the third
information being used to indicate whether the terminal needs to
send the second information to the network device; and receiving,
by the network device, the second information sent by the terminal
device, includes: receiving, by the network device, the second
information sent by the terminal device according to the third
information.
[0082] Optionally, in the embodiments of the present application,
the third information is carried in a response message of random
access (a random access response message) sent by the network
device to the terminal device, and/or the second information is
carried in a message used to send an identifier of the terminal
device in a random access process.
[0083] Optionally, in the embodiments of the present application,
the second information is an identifier of a signal carried on the
first downlink transmission beam received by the terminal device,
and the signal carried on the first downlink transmission beam is
at least one of following signals: a primary synchronization
signal, a secondary synchronization signal, a broadcast signal, a
reference signal, and a signal carrying a system message.
[0084] It should be understood that the interaction between the
network device and the terminal device and related features,
functions, and the like described at the network device correspond
to related features and functions of the terminal device. That is,
the network device receives the information that the terminal
device sends to the network device. It will not be elaborated
herein for brevity.
[0085] It should also be understood that in various embodiments of
the present application, the size of sequence numbers of above
processes does not imply a sequence of execution orders, and the
order of execution of the processes should be determined by its
function and internal logic, which is not limited in implementation
process of the embodiments of the present application.
[0086] The method for transmitting a signal according to the
embodiments of the present application is described in detail
above. An apparatus for transmitting a signal according to the
embodiments of the present application will be described below with
reference to FIG. 5 to FIG. 8, and the technical features described
in the method embodiments are applicable to following apparatus
embodiments.
[0087] FIG. 5 shows a schematic block diagram of a terminal device
300 for transmitting a signal according to an embodiment of the
present application. As is shown in FIG. 5, the terminal device 300
includes a first receiving unit 310 and a first sending unit
320.
[0088] The first receiving unit 310 is configured to receive a
signal sent by a network device by using a plurality of downlink
transmission beam groups;
[0089] The first sending unit 320 is configured to first
information to the network device, so that the network device
determines a first downlink transmission beam group from the
plurality of downlink transmission beam groups, at least one of the
plurality of downlink transmission beam groups including a
plurality of downlink transmission beams.
[0090] Therefore, the terminal device for transmitting a signal in
the embodiments of the present application can reduce the system
signaling overhead.
[0091] Optionally, in the embodiments of the present application,
the first information is a preamble sequence of random access, and
the preamble sequence of random access and/or channel resource of
physical random access used to send the preamble sequence of random
access correspond to the first downlink transmission beam
group.
[0092] Optionally, in the embodiments of the present application,
the terminal device 300 further includes: a second sending unit
330, configured to send second information to the network device,
so that the network device determines a first downlink transmission
beam from the plurality of downlink transmission beam groups, the
first downlink transmission beam being a downlink transmission beam
that is expected by the terminal device for the network device to
transmit a subsequent signal.
[0093] Optionally, in the embodiments of the present application,
the first downlink transmission beam is a beam in the first
downlink transmission beam group.
[0094] Optionally, in the embodiments of the present application,
the terminal device further includes: a second receiving unit 340,
configured to receive third information sent by the network device,
the third information being used to indicate whether the terminal
device needs to send the second information to the network device;
and a determining unit 350, configured to determine, according to
the third information, whether to send the second information to
the network device.
[0095] Optionally, in the embodiments of the present application,
the third information is carried in a random access response
message sent by the network device to the terminal device, and/or
the second information is carried in a message used to send an
identifier of the terminal device in a random access process.
[0096] Optionally, in the embodiments of the present application,
the second information is an identifier of a signal carried on the
first downlink transmission beam received by the terminal device,
and the signal carried on the first downlink transmission beam is
at least one of following signals: a primary synchronization
signal, a secondary synchronization signal, a broadcast signal, a
reference signal, and a signal carrying a system message.
[0097] It should be understood that the terminal device 300 for
transmitting the signal according to the embodiments of the present
application may correspond to the terminal device in the method
embodiments of the present application, and the foregoing and other
operations and/or functions of respective units in the terminal
device 300 are respectively used for implementing the corresponding
processes of the terminal device in the method 100 shown in FIG. 2
and FIG. 3, and it will not be elaborated herein again for
brevity.
[0098] FIG. 6 shows a schematic block diagram of a network device
400 for transmitting a signal according to an embodiment of the
present application. As shown in FIG. 6, the network device 400
includes: a first sending unit 410, a first receiving unit 420, and
a first determining unit 430.
[0099] The first sending unit 410 is configured to send a signal to
a terminal device by using a plurality of downlink transmission
beam groups.
[0100] The first receiving unit 420 is configured to receive first
information sent by the terminal device.
[0101] The first determining unit 430 is configured to determine a
first downlink transmission beam group from the plurality of
downlink transmission beam groups according to the first
information, at least one of the plurality of downlink transmission
beam groups including a plurality of downlink transmission
beams.
[0102] Therefore, the terminal device for transmitting a signal in
the embodiments of the present application can reduce the system
signaling overhead.
[0103] Optionally, in the embodiments of the present application,
the first information is a random access preamble sequence, and the
first determining unit 430 is specifically configured to: determine
the first downlink transmission beam group corresponding to the
random access preamble sequence from the plurality of downlink
transmission beam groups, according to the random access preamble
sequence, or determine the first downlink transmission beam group
corresponding to a physical random access channel resource used to
send the random access preamble sequence, according to the physical
random access channel resource, or determine the first downlink
transmission beam group corresponding to both the random access
preamble sequence and the physical random access channel resource
used to send the random access preamble sequence, according to the
random access preamble sequence and the physical random access
channel resource.
[0104] Optionally, in the embodiments of the present application,
the network device 400 further includes: a second receiving unit
440, configured to receive second information sent by the terminal
device, the second information being used to indicate the first
downlink transmission beam in the plurality of downlink
transmission beam groups, the first downlink transmission beam
being a downlink transmission beam that is expected by the terminal
device for the network device to transmit a subsequent signal; and
a second determining unit 450, configured to determine the first
downlink transmission beam from the plurality of downlink
transmission beam groups according to the second information.
[0105] Optionally, in the embodiments of the present application,
the first downlink transmission beam is a beam in the downlink
transmission beam group, and the second determining unit 450 is
specifically configured to: determine the first downlink
transmission beam from the first downlink transmission beam group
according to the second information.
[0106] Optionally, in the embodiments of the present application,
the network device 400 further includes: a second sending unit 460,
configured to send third information to the terminal device, the
third information being used to indicate whether the terminal
device needs to send the second information to the network device;
and the second receiving unit 440 is specifically configured to:
receive the second information sent by the terminal device
according to the third information.
[0107] Optionally, in the embodiments of the present application,
the third information is carried in a random access response
message sent by the network device to the terminal device, and/or
the second information is carried in a message used to send an
identifier of the terminal device in a random access process.
[0108] Optionally, in the embodiments of the present application,
the second information is an identifier of a signal carried on the
first downlink transmission beam received by the terminal device,
and the signal carried on the first downlink transmission beam is
at least one of following signals: a primary synchronization
signal, a secondary synchronization signal, a broadcast signal, a
reference signal, and a signal carrying a system message.
[0109] It should be understood that the network device 400 for
transmitting the signal according to the embodiments of the present
application may correspond to the network device in the method
embodiments of the present application, and the foregoing and other
operations and/or functions of respective units in the network
device 400 are respectively used for implementing the corresponding
processes of the network device in the method 200 shown in FIG. 4,
and it will not be elaborated herein again for brevity.
[0110] As is shown in FIG. 7, there is further provided a terminal
device 500 for transmitting a signal in the embodiment of the
present application. The terminal device 500 may be the terminal
device 300 in FIG. 3 that may be used to execute the contents of
the terminal device corresponding to the method 100 in FIG. 2. The
terminal device 500 includes an input interface 510, an output
interface 520, a processor 530, and a memory 540. The input
interface 510, the output interface 520, the processor 530, and the
memory 540 may be connected by a bus system. The memory 540 is
configured to store programs, instructions or codes. The processor
530 is configured to execute the programs, the instructions or the
codes in the memory 540 to control the input interface 510 to
receive a signal, control the output interface 520 to send a
signal, and complete operations in the foregoing method
embodiments.
[0111] Therefore, the terminal device for transmitting a signal in
the embodiments of the present application can reduce the system
signaling overhead.
[0112] It should be understood that, in the embodiments of the
present application, the processor 530 may be a Central Processing
Unit (CPU), and the processor 530 may also be other general purpose
processors, Digital Signal Processor (DSP), Application Specific
Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or
other programmable logic devices, discrete gate or transistor logic
devices, discrete hardware components, and the like. The general
purpose processor may be a microprocessor, any conventional
processor or the like.
[0113] The memory 540 may include read-only memory and random
access memory, and provides instructions and data to the processor
530. A portion of the memory 540 may also include a non-volatile
random access memory. For example, the memory 540 may also store
information of a type of a device.
[0114] In implementation process, each content of the foregoing
method may be completed by an integrated logic circuit of hardware
or an instruction in a form of software in the processor 530. The
content of the method disclosed in the embodiments of the present
application may be directly implemented by a hardware processor, or
may be performed by a combination of hardware and software modules
in the processor. The software module may be located in a
conventional storage medium, such as a random access memory, a
flash memory, a read only memory, a programmable read only memory
or an electrically erasable programmable memory, a register, and
the like. The storage medium is located in the memory 540, and the
processor 530 reads the information in the memory 540 and combines
the hardware to complete the content of the above method. To avoid
repetition, it will not be elaborated here.
[0115] In a specific implementation, the first receiving unit 310
and the second receiving unit 340 in the terminal device 300 may be
implemented by the input interface 510 in FIG. 7, and the first
sending unit 320 and the second sending unit 330 in the terminal
device 300 may be implemented by the output interface 520 in FIG.
7, and the determining unit 350 in the terminal device 300 may be
implemented by the processor 530 in FIG. 7.
[0116] As is shown in FIG. 8, there is further provided a network
device 600 for transmitting a signal in the embodiment of the
present application. The network device 600 may be the network
device 400 in FIG. 4 that may be used to execute the content of the
network device corresponding to the method 200 in FIG. 4. The
network device 600 includes an input interface 610, an output
interface 620, a processor 630, and a memory 640. The input
interface 610, the output interface 620, the processor 630, and the
memory 640 may be connected by a bus system. The memory 640 is
configured to store programs, instructions or codes. The processor
630 is configured to execute programs, instructions or codes in the
memory 640 to control the input interface 610 to receive a signal,
control the output interface 620 to send a signal, and complete
operations in the foregoing method embodiments.
[0117] Therefore, the network device for transmitting a signal in
the embodiments of the present application can reduce the system
signaling overhead.
[0118] It should be understood that, in the embodiments of the
present application, the processor 630 may be a Central Processing
Unit (CPU), and the processor 630 may also be other general purpose
processors, Digital Signal Processor (DSP), Application Specific
Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or
other programmable logic devices, discrete gate or transistor logic
devices, discrete hardware components, and the like. The general
purpose processor may be a microprocessor, any conventional
processor or the like.
[0119] The memory 640 may include read-only memory and random
access memory, and provides instructions and data to the processor
630. A portion of the memory 640 may also include a non-volatile
random access memory. For example, the memory 640 may also store
information of a type of a device.
[0120] In implementation process, the content of the foregoing
method may be completed by an integrated logic circuit of hardware
or an instruction in a form of software in the processor 630. The
content of the method disclosed in the embodiments of the present
application may be directly implemented by a hardware processor, or
may be performed by a combination of hardware and software modules
in the processor. The software module may be located in a
conventional storage medium, such as a random access memory, a
flash memory, a read only memory, a programmable read only memory
or an electrically erasable programmable memory, a register, and
the like. The storage medium is located in the memory 640, and the
processor 630 reads the information in the memory 640 and combines
the hardware to complete the content of the above method. To avoid
repetition, it will not be elaborated here.
[0121] In a specific implementation, the first determining unit 430
and the second determining unit 450 in the network device 400 may
be implemented by the processor 630 in FIG. 8, and the first
sending unit 410 and the second sending unit 460 may be implemented
by the output interface 620 in FIG. 8, and the first receiving unit
420 and the second receiving unit 440 may be implemented by the
input interface 610 in FIG. 8.
[0122] Those of ordinary skills in the art may be aware that, the
units and algorithm steps in individual examples described in
combination with the embodiments described in the present
disclosure may be implemented by electronic hardware or a
combination of computer software and electronic hardware. Whether
the functions are performed by hardware or software depends on
particular applications and design constraint conditions of the
technical solutions. A person skilled in the art may use different
methods to implement the described functions for each particular
application, but it should not be considered that the
implementation goes beyond the scope of the present
application.
[0123] It may be clearly understood by those skilled in the art
that, for the purpose of convenient and brief description, for a
detailed working process of the foregoing system, apparatus, and
unit, reference may be made to a corresponding process in the
foregoing method embodiments, and details are not described herein
again.
[0124] In the several embodiments provided in the present
application, it should be understood that the disclosed systems,
apparatuses and methods may be implemented in other ways. For
example, the apparatus embodiments described above are merely
illustrative. For example, the division of the units is only a kind
of logical function division. In practice, other division manner
may be used. For example, a plurality of units or components may be
combined or integrated into another system, or some features may be
ignored or not performed. In addition, the illustrated or discussed
mutual coupling or direct coupling or communication connection may
be indirect coupling or communication connection through some
interfaces, devices or units, and may be in electrical, mechanical
or other forms.
[0125] The units described as separated parts may or may not be
physically separated, and the parts displayed as units may or may
not be physical units, that is, may be located in one place, or may
be distributed on a plurality of network units. Some or all of the
units may be selected according to actual needs to achieve the
objectives of the solutions in the embodiments.
[0126] In addition, each functional unit in each embodiment of the
present application may be integrated in one processing unit, or
each unit may exist alone physically, or two or more units may be
integrated in one unit.
[0127] The functions may also be stored in a computer-readable
storage medium if being implemented in the form of a software
functional unit and sold or used as an independent product. Based
on such understanding, the essence of the technical solutions of
the present application, or the part contributing to the prior art
or all or a part of the technical solutions, may be embodied in the
form of a software product. The computer software product is stored
in a storage medium including a number of instructions such that a
computer device (which may be a personal computer, a server, or a
network device, etc.) performs all or a part of steps of the method
described in each of the embodiments of the present application.
The foregoing storage medium includes: any medium that is capable
of storing program codes such as a USB disk, a mobile hard disk, a
Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic
disk or an optical disk, and the like.
[0128] The foregoing descriptions are merely detailed embodiments
of the present application, but the protection scope of the present
application is not limited thereto. Any person skilled in the art
can easily think of changes or substitutions within the technical
scope of the present application, and all the changes or
substitutions should be covered by the protection scope of the
present application. Therefore, the protection scope of the present
application should be subjected to the protection scope of the
claims.
* * * * *