U.S. patent application number 17/523691 was filed with the patent office on 2022-03-03 for method and device for transmitting uplink information on unlicensed carrier.
This patent application is currently assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.. The applicant listed for this patent is GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.. Invention is credited to Bin FENG.
Application Number | 20220070681 17/523691 |
Document ID | / |
Family ID | |
Filed Date | 2022-03-03 |
United States Patent
Application |
20220070681 |
Kind Code |
A1 |
FENG; Bin |
March 3, 2022 |
METHOD AND DEVICE FOR TRANSMITTING UPLINK INFORMATION ON UNLICENSED
CARRIER
Abstract
The invention discloses a method and a device for transmitting
uplink information on an unlicensed carrier, and implementing
uplink information transmission on the unlicensed carrier. The
method comprises: a terminal device determines a current time
resource set for performing data transmission on an unlicensed
carrier with respect to network equipment, wherein the network
equipment uses a time resource set obtained by means of competition
to perform data transmission on an unlicensed carrier, each time
resource set comprises continuously distributed time resources, and
time resources in different time resource sets are separated by an
interval; and the terminal device transmits, to the network
equipment, on the unlicensed carrier using a first time resource in
the current time resource set, the uplink information, wherein the
uplink information corresponds to downlink information transmitted
by the network equipment using at least one previous time resource
set in the current time resource set.
Inventors: |
FENG; Bin; (Dongguan,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. |
Dongguan |
|
CN |
|
|
Assignee: |
GUANGDONG OPPO MOBILE
TELECOMMUNICATIONS CORP., LTD.
Dongguan
CN
|
Appl. No.: |
17/523691 |
Filed: |
November 10, 2021 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15774504 |
May 8, 2018 |
11228916 |
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PCT/CN2016/073430 |
Feb 4, 2016 |
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17523691 |
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International
Class: |
H04W 16/14 20060101
H04W016/14; H04L 5/00 20060101 H04L005/00; H04W 72/04 20060101
H04W072/04 |
Claims
1-52. (canceled)
53. A method for transmitting uplink information on an unlicensed
carrier, comprising: receiving, by terminal equipment, downlink
information transmitted in at least one time resource set;
receiving, by the terminal equipment, second information used to
determine a first time resource in a present time resource set,
wherein the present time resource set is a time resource set
obtained by network equipment by contention, and the network
equipment performs data transmission on the unlicensed carrier
through time resource sets obtained by contention, time resources
in each time resource set obtained by contention are continuous,
and different time resource sets are discontinuous; and sending, by
the terminal equipment, the uplink information corresponding to the
downlink information by using the first time resource.
54. The method according to claim 53, wherein receiving, by the
terminal equipment, the second information comprises: receiving, by
the terminal equipment, the second information after receiving the
downlink information.
55. The method according to claim 54, wherein receiving, by the
terminal equipment, the second information after receiving the
downlink information comprises: receiving, by the terminal
equipment, the second information in the present time resource set
after receiving the downlink information.
56. The method according to claim 53, wherein the present time
resource set is a time resource set obtained by the network
equipment by contention adopting Listen Before Talk (LBT).
57. The method according to claim 53, wherein the downlink
information comprises a Physical Downlink Shared Channel (PDSCH),
and the uplink information comprises an Acknowledgement
(ACK)/Non-Acknowledgement (NACK).
58. The method according to claim 53, wherein sending, by the
terminal equipment, the uplink information corresponding to the
downlink information by using the first time resource comprises:
sending, by the terminal equipment, an N-bit ACK/NACK to the
network equipment through a Physical Uplink Control Channel (PUCCH)
or a Physical Uplink Shared Channel (PUSCH) on the first time
resource, the N-bit ACK/NACK being configured to indicate whether
the terminal equipment successfully receives part or all of the
PDSCH.
59. A method for transmitting uplink information on an unlicensed
carrier, comprising: sending, by network equipment, downlink
information in at least one time resource set; sending, by the
network equipment, second information to terminal equipment,
wherein the second information is used to determine a first time
resource in a present time resource set, the present time resource
set is a time resource set obtained by the network equipment by
contention, and the network equipment performs data transmission on
the unlicensed carrier through time resource sets obtained by
contention, time resources in each time resource set obtained by
contention are continuous, and different time resource sets are
discontinuous; and receiving, by the network equipment, the uplink
information corresponding to the downlink information sent by the
terminal equipment using the first time resource.
60. The method according to claim 59, wherein sending, by the
network equipment, the second information comprises: sending, by
the network equipment, the second information after sending the
downlink information.
61. The method according to claim 60, wherein sending, by the
network equipment, the second information after sending the
downlink information comprises: sending, by the network equipment,
the second information in the present time resource set after
sending the downlink information.
62. The method according to claim 59, wherein the present time
resource set is a time resource set obtained by the network
equipment by contention adopting Listen Before Talk (LBT).
63. The method according to claim 59, wherein the downlink
information comprises a Physical Downlink Shared Channel (PDSCH),
and the uplink information comprises an Acknowledgement
(ACK)/Non-Acknowledgement (NACK).
64. The method according to claim 59, wherein receiving, by the
network equipment, the uplink information corresponding to the
downlink information sent by the terminal equipment using the first
time resource comprises: receiving, by the network equipment, an
N-bit ACK/NACK transmitted by the terminal equipment through a
Physical Uplink Control Channel (PUCCH), or a Physical Uplink
Shared Channel (PUSCH) on the first time resource, the N-bit
ACK/NACK being configured to indicate whether the terminal
equipment successfully receives part or all of the PDSCH.
65. A device for transmitting uplink information on an unlicensed
carrier, comprising: a memory, a processor, and a computer program
stored on the memory and executable on the processor, wherein the
computer program, when executed by the processor, causes the
processor to execute operations of: receiving downlink information
transmitted in at least one time resource set; receiving second
information used to determine a first time resource in a present
time resource set, wherein the present time resource set is a time
resource set obtained by network equipment by contention, and the
network equipment performs data transmission on the unlicensed
carrier through time resource sets obtained by contention, time
resources in each time resource set obtained by contention are
continuous, and different time resource sets are discontinuous; and
sending the uplink information corresponding to the downlink
information by using the first time resource.
66. The device according to claim 65, wherein the operations
further comprise: receiving the second information after receiving
the downlink information.
67. The device according to claim 66, wherein the operations
further comprise: receiving the second information in the present
time resource set after receiving the downlink information.
68. The device according to claim 65, wherein the present time
resource set is a time resource set obtained by the network
equipment by contention adopting Listen Before Talk (LBT).
69. The device according to claim 65, wherein the downlink
information comprises a Physical Downlink Shared Channel (PDSCH),
and the uplink information comprises an Acknowledgement
(ACK)/Non-Acknowledgement (NACK).
70. The device according to claim 65, wherein the operations
further comprise: sending an N-bit ACK/NACK to the network
equipment through a Physical Uplink Control Channel (PUCCH) or a
Physical Uplink Shared Channel (PUSCH) on the first time resource,
the N-bit ACK/NACK being configured to indicate whether the
terminal equipment successfully receives part or all of the PDSCH.
Description
TECHNICAL FIELD
[0001] Embodiments of the disclosure relate to the field of
communications, and more particularly to a method and device for
transmitting uplink information on an unlicensed carrier.
BACKGROUND
[0002] At present, it is considered to use unlicensed frequency
bands (for example, 2.4 GHz and 5.8 GHz) in a wireless cellular
system to extend frequency of use in the cellular system, and the
methods mainly include a License Assisted Access (LAA) technology.
LAA mainly has the following characteristics: an unlicensed
frequency band is required to be aggregated with a licensed
frequency band for use, and the unlicensed frequency band can only
work as a secondary carrier; and use of the unlicensed frequency
band is not only limited to scheduling of a base station but also
limited to a load of the frequency band, and namely, may be used
only through a contention mechanism. Before a sending end device
transmits data on an unlicensed carrier, the sending end device is
required to perform Listen Before Talk (LBT) detection on the
unlicensed carrier, and may transmit the data on the unlicensed
carrier only after determining that a channel is in an idle state.
In addition, time for which the sending end device occupies the
transmission channel of the unlicensed carrier every time should
not exceed a maximum occupation duration. Therefore, the sending
end device is required to release the channel after occupying the
channel for a certain period and contend for a channel resource
again when being required to use the channel.
[0003] At present, there is yet no solution for transmitting uplink
information on an unlicensed frequency band. If terminal equipment
executes LBT before sending uplink information on an unlicensed
carrier, since different terminal equipment is at different
locations in a cell and their detection results about the same
unlicensed carrier may be greatly different, time for transmitting
the uplink information by the terminal equipment in a system is
greatly different. In addition, network equipment (for example, a
base station) is required to maintain a time sequence relationship
(for example, Acknowledgement (ACK)/Non-Acknowledgement (NACK)
feedback information) of the uplink information for different
terminal equipment respectively, which is complex in
implementation.
SUMMARY
[0004] The embodiments of the disclosure provide a method and
device for transmitting uplink information on an unlicensed
carrier, which may implement transmission of the uplink information
on the unlicensed carrier.
[0005] A first aspect provides a method for transmitting uplink
information on an unlicensed carrier, which may include that:
terminal equipment determines a present time resource set for data
transmission of network equipment on the unlicensed carrier,
wherein the network equipment may perform data transmission on the
unlicensed carrier through time resource sets obtained by
contention, time resources included in each time resource set may
be continuously distributed, and the time resources in different
time resource sets may be distributed at intervals; and the
terminal equipment sends the uplink information to the network
equipment in a first time resource of the present time resource set
on the unlicensed carrier, the uplink information corresponding to
downlink information transmitted by the network equipment in at
least one previous time resource set of the present time resource
set.
[0006] Specifically, the time resource sets obtained by the network
equipment by contention include the present time resource set and
the at least one previous time resource set, and any time resource
in the at least one previous time resource set is located before
any time resource in the present time resource set.
[0007] Therefore, according to the method for transmitting the
uplink information on the unlicensed carrier in the embodiments of
the disclosure, the network equipment contends for transmission
resources on the unlicensed carrier, and the terminal equipment
transmits the uplink information in the present time resource set,
obtained by the network equipment by contention, of the unlicensed
carrier, the uplink information corresponding to the downlink
information transmitted by the network equipment in the at least
one previous time resource set, and the terminal equipment may
transmit the uplink information without contending for the
transmission resources on the unlicensed carrier.
[0008] In combination with the first aspect, in a first possible
implementation mode of the first aspect, the downlink information
may include Downlink Control Information (DCI), and the uplink
information may include a Physical Uplink Shared Channel (PUSCH);
or the downlink information may include a Physical Downlink Shared
Channel (PDSCH), and the uplink information may include an
ACK/NACK.
[0009] In combination with the abovementioned possible
implementation mode, in a second possible implementation mode of
the first aspect, the operation that the terminal equipment
determines the present time resource set for data transmission of
the network equipment on the unlicensed carrier may include that:
the terminal equipment receives first information sent by the
network equipment; and the terminal equipment determines a set
number of the present time resource set obtained by the network
equipment by contention according to the first information.
[0010] In combination with the abovementioned possible
implementation modes, in a third possible implementation mode of
the first aspect, the first information may include System Frame
Number (SFN) information of a system frame where a starting time
resource in the present time resource set is located, or the first
information may include set number information of the present time
resource set.
[0011] In combination with the abovementioned possible
implementation modes, in a fourth possible implementation mode of
the first aspect, before the operation that the terminal equipment
sends the uplink information to the network equipment in the first
time resource of the present time resource set on the unlicensed
carrier, the method may further include that: the terminal
equipment receives second information sent by the network equipment
in the present time resource set, the second information indicating
that the present time resource set or the first time resource is
configured for transmission of the uplink information corresponding
to the downlink information transmitted by the network equipment in
the at least one previous time resource set; or the terminal
equipment receives third information sent by the network equipment
in the at least one previous time resource set, the third
information indicating that the uplink information corresponding to
the downlink information transmitted by the network equipment in
the at least one previous time resource set is transmitted in the
present time resource set or the first time resource; or the
terminal equipment determines according to a preset rule that the
present time resource set or the first time resource is configured
for transmission of the uplink information corresponding to the
downlink information transmitted by the network equipment in the at
least one previous time resource set.
[0012] In combination with the abovementioned possible
implementation modes, in a fifth possible implementation mode of
the first aspect, the third information may include the set number
information of the present time resource set.
[0013] In combination with the abovementioned possible
implementation modes, in a sixth possible implementation mode of
the first aspect, the second information may include set number
information of each of the at least one previous time resource
set.
[0014] In combination with the abovementioned possible
implementation modes, in a seventh possible implementation mode of
the first aspect, the second information may further include time
resource number information of at least one target time resource
unit in the at least one previous time resource set, wherein the
first time resource may be configured for transmission of the
uplink information corresponding to the downlink information
transmitted by the network equipment on the at least one target
time resource unit.
[0015] Optionally, a time resource unit is specifically a subframe,
and the second information further includes subframe number
information of at least one target subframe in the at least one
previous time resource set. In this case, the first time resource
may specifically correspond to the at least one target
subframe.
[0016] In combination with the abovementioned possible
implementation modes, in an eighth possible implementation mode of
the first aspect, before the operation that the terminal equipment
sends the uplink information to the network equipment in the first
time resource of the present time resource set on the unlicensed
carrier, the method may further include that: the terminal
equipment determines the first time resource in the present time
resource set according to a preset rule; or the terminal equipment
receives fourth information sent by the network equipment in the
present time resource set, the fourth information being configured
to indicate the first time resource.
[0017] In combination with the abovementioned possible
implementation modes, in a ninth possible implementation mode of
the first aspect, the downlink information may include the PDSCH,
and the uplink information may include the ACK/NACK; and the
operation that the terminal equipment sends the uplink information
to the network equipment in the first time resource of the present
time resource set on the unlicensed carrier may include that: the
terminal equipment sends an N-bit ACK/NACK to the network equipment
through a Physical Uplink Control Channel (PUCCH) or PUSCH on the
first time resource, the N-bit ACK/NACK being configured to
indicate whether the terminal equipment successfully receives the
PDSCH sent to the terminal equipment by the network equipment in
the at least one previous time resource set.
[0018] In combination with the abovementioned possible
implementation modes, in a tenth possible implementation mode of
the first aspect, the operation that the terminal equipment sends
the N-bit ACK/NACK to the network equipment through the PUCCH or
PUSCH on the first time resource may include that: the terminal
equipment sends the N-bit ACK/NACK to the network equipment on the
first time resource by adopting PUCCH format 3 or PUCCH format 4 or
PUCCH format 5.
[0019] In combination with the abovementioned possible
implementation modes, in an eleventh possible implementation mode
of the first aspect, N may be determined by the following
formula:
N = i = 0 K - 1 .times. C X i , ##EQU00001##
[0020] where K may represent a number of the at least one previous
time resource set, C may represent a maximum bit number of the
ACK/NACK corresponding to each PDSCH, X.sub.i may be equal to a
number of time resource units included in an ith previous time
resource set in the at least one previous time resource set or
equal to a number of downlink time resource units included in the
ith previous time resource set or equal to a parameter value
configured for the ith previous time resource set by the network
equipment, and the parameter value may not be greater than the
number of the time resource units included in the ith previous time
resource set.
[0021] In combination with the abovementioned possible
implementation modes, in a twelfth possible implementation mode of
the first aspect, N may be determined by the following formula:
N = i = 0 K - 1 .times. Y i , ##EQU00002##
[0022] where K may represent the number of the at least one
previous time resource set, Y.sub.i may be equal to the parameter
value configured for the ith previous time resource set in the at
least one previous time resource set by the network equipment, and
the parameter value may be an integer more than or equal to 0.
[0023] A second aspect provides another method for transmitting
uplink information on an unlicensed carrier, which may include
that: network equipment determines a present time resource set for
data transmission on the unlicensed carrier, wherein the network
equipment may perform data transmission on the unlicensed carrier
through time resource sets obtained by contention, time resources
included in each time resource set may be continuously distributed,
and the time resources in different time resource sets may be
distributed at intervals; and the network equipment receives the
uplink information sent by terminal equipment in a first time
resource of the present time resource set on the unlicensed
carrier, the uplink information corresponding to downlink
information transmitted by the network equipment in at least one
previous time resource set.
[0024] Specifically, the time resource sets obtained by the network
equipment by contention include the present time resource set and
the at least one previous time resource set, and any time resource
in the at least one previous time resource set is located before
any time resource in the present time resource set.
[0025] In combination with the second aspect, in a first possible
implementation mode of the second aspect, the downlink information
may include DCI, and the uplink information may include a PUSCH; or
the downlink information may include a PDSCH, and the uplink
information may include an ACK/NACK.
[0026] In combination with the abovementioned possible
implementation mode, in a second possible implementation mode of
the second aspect, before the operation that the network equipment
receives the uplink information sent by the terminal equipment in
the first time resource of the present time resource set on the
unlicensed carrier, the method may further include that: the
network equipment sends first information, the first information
being configured to indicate a set number of the present time
resource set.
[0027] In combination with the abovementioned possible
implementation mode, in a third possible implementation mode of the
second aspect, the first information may include SFN information of
a system frame where a starting time resource in the present time
resource set is located, or the first information may include set
number information of the present time resource set.
[0028] In combination with the abovementioned possible
implementation modes, in a fourth possible implementation mode of
the second aspect, before the operation that the network equipment
receives the uplink information sent by the terminal equipment in
the first time resource of the present time resource set on the
unlicensed carrier, the method may further include that: the
network equipment sends second information in the present time
resource set, the second information indicating that the present
time resource set or the first time resource is configured for
transmission of the uplink information corresponding to the
downlink information transmitted by the network equipment in the at
least one previous time resource set; or the network equipment
sends third information in the at least one previous time resource
set, the third information indicating that the uplink information
corresponding to the downlink information transmitted by the
network equipment in the at least one previous time resource set is
transmitted in the present time resource set or the first time
resource; or the network equipment determines that the present time
resource set or the first time resource is configured for
transmission of the uplink information corresponding to the
downlink information transmitted in the at least one previous time
resource set according to a preset rule.
[0029] In combination with the abovementioned possible
implementation modes, in a fifth possible implementation mode of
the second aspect, the third information may include the set number
information of the present time resource set.
[0030] In combination with the abovementioned possible
implementation modes, in a sixth possible implementation mode of
the second aspect, the second information may include set number
information of each of the at least one previous time resource
set.
[0031] In combination with the abovementioned possible
implementation modes, in a seventh possible implementation mode of
the second aspect, the second information may further include time
resource number information of at least one target time resource
unit in the at least one previous time resource set, wherein the
first time resource may be configured for transmission of the
uplink information corresponding to the downlink information
transmitted by the network equipment on the at least one target
time resource unit.
[0032] In combination with the abovementioned possible
implementation modes, in an eighth possible implementation mode of
the second aspect, before the operation that the network equipment
receives the uplink information sent by the terminal equipment in
the first time resource of the present time resource set on the
unlicensed carrier, the method may further include that: the
network equipment sends fourth information in the present time
resource set, the fourth information being configured to indicate
the first time resource.
[0033] In combination with the abovementioned possible
implementation modes, in a ninth possible implementation mode of
the second aspect, the downlink information may include the PDSCH,
and the uplink information may include the ACK/NACK; and the
operation that the network equipment receives the uplink
information sent by the terminal equipment in the first time
resource of the present time resource set on the unlicensed carrier
may include that: the network equipment receives an N-bit ACK/NACK
transmitted by the terminal equipment through a PUCCH or PUSCH on
the first time resource, the N-bit ACK/NACK being configured to
indicate whether the terminal equipment successfully receives the
PDSCH sent to the terminal equipment by the network equipment in
the at least one previous time resource set.
[0034] In combination with the abovementioned possible
implementation modes, in a tenth possible implementation mode of
the second aspect, the operation that the network equipment
receives the N-bit ACK/NACK transmitted by the terminal equipment
through the PUCCH or PUSCH on the first time resource may include
that: the network equipment receives the N-bit ACK/NACK transmitted
by the terminal equipment on the first time resource by adopting
PUCCH format 3 or PUCCH format 4 or PUCCH format 5.
[0035] In combination with the abovementioned possible
implementation modes, in an eleventh possible implementation mode
of the second aspect, N may be determined by the following
formula:
N = i = 0 K - 1 .times. C X i , ##EQU00003##
[0036] where K may represent a number of the at least one previous
time resource set, C may represent a maximum bit number of the
ACK/NACK corresponding to each PDSCH, X.sub.i may be equal to a
number of time resource units included in an ith previous time
resource set of the at least one previous time resource set or
equal to a number of downlink time resource units included in the
ith time resource set or equal to a parameter value configured for
the ith time resource set by the network equipment, and the
parameter value may not be larger than the number of the time
resource units included in the ith time resource set.
[0037] In combination with the abovementioned possible
implementation modes, in a twelfth possible implementation mode of
the second aspect, N may be determined by the following
formula:
N = i = 0 K - 1 .times. Y i , ##EQU00004##
[0038] where K may represent the number of the at least one
previous time resource set, Y.sub.i may be equal to the parameter
value configured for the ith time resource set in the at least one
previous time resource set by the network equipment, and the
parameter value may be an integer more than or equal to 0.
[0039] A third aspect provides a device for transmitting uplink
information on an unlicensed carrier, which is configured to
execute the method in the first aspect or any possible
implementation mode of the first aspect. Specifically, the device
includes units configured to execute the method in the first aspect
or any possible implementation mode of the first aspect.
[0040] A fourth aspect provides another device for transmitting
uplink information on an unlicensed carrier, which is configured to
execute the method in the second aspect or any possible
implementation mode of the second aspect. Specifically, the device
includes units configured to execute the method in the second
aspect or any possible implementation mode of the second
aspect.
[0041] A fifth aspect provides another device for transmitting
uplink information on an unlicensed carrier, which includes a
memory and a processor, the memory is configured to store
instructions, the processor is configured to execute the
instructions stored in the memory, and when the processor executes
the instructions stored in the memory, such execution causes the
processor to execute the method in the first aspect or any possible
implementation mode of the first aspect.
[0042] A sixth aspect provides another device for transmitting
uplink information on an unlicensed carrier, which includes a
memory and a processor, the memory is configured to store
instructions, the processor is configured to execute the
instructions stored in the memory, and when the processor executes
the instruction stored in the memory, such execution causes the
processor to execute the method in the second aspect or any
possible implementation mode of the second aspect.
[0043] A seventh aspect provides a computer-readable medium, which
is configured to store a computer program, the computer program
including instructions configured for the execution of the method
in the first aspect or any possible implementation mode of the
first aspect.
[0044] An eighth aspect provides a computer-readable medium, which
is configured to store a computer program, the computer program
including instructions configured for the execution of the method
in the second aspect or any possible implementation mode of the
second aspect.
[0045] Optionally, in some aspects of the disclosure, the network
equipment sends at least one of the following information in a
broadcast form: the first information, the second information, the
third information or the fourth information.
[0046] In such a manner, the network equipment may configure all
terminal equipment to adopt the same uplink and downlink subframe
correspondence or Hybrid Automatic Repeat reQuest (HARQ)
correspondence without the need of determining an uplink and
downlink correspondence according to a respective condition of each
piece of terminal equipment, so that complexity of the network
equipment is reduced, and system performance is improved.
BRIEF DESCRIPTION OF DRAWINGS
[0047] In order to describe the technical solutions of the
embodiments of the disclosure more clearly, the drawings required
to be used in the descriptions about the embodiments of the
disclosure or a related art will be simply introduced below.
Obviously, the drawings described below are only some embodiments
of the disclosure. Other drawings may further be obtained by those
skilled in the art according to these drawings without creative
work.
[0048] FIG. 1 is a schematic diagram of a system architecture
applied in the embodiments of the disclosure.
[0049] FIG. 2 is a schematic flowchart of a method for transmitting
uplink information on an unlicensed carrier according to an
embodiment of the disclosure.
[0050] FIG. 3 is an example of a method for transmitting uplink
information on an unlicensed carrier according to an embodiment of
the disclosure.
[0051] FIG. 4 is another example of a method for transmitting
uplink information on an unlicensed carrier according to an
embodiment of the disclosure.
[0052] FIG. 5 is another example of a method for transmitting
uplink information on an unlicensed carrier according to an
embodiment of the disclosure.
[0053] FIG. 6 is a schematic block diagram of a device for
transmitting uplink information on an unlicensed carrier according
to an embodiment of the disclosure.
[0054] FIG. 7 is a schematic block diagram of another device for
transmitting uplink information on an unlicensed carrier according
to an embodiment of the disclosure.
[0055] FIG. 8 is a schematic block diagram of another device for
transmitting uplink information on an unlicensed carrier according
to an embodiment of the disclosure.
[0056] FIG. 9 is a schematic block diagram of another device for
transmitting uplink information on an unlicensed carrier according
to an embodiment of the disclosure.
DETAILED DESCRIPTION
[0057] The technical solutions in the embodiments of the disclosure
will be clearly and completely described below in combination with
the drawings in the embodiments of the disclosure. Obviously, the
described embodiments are not all embodiments but part of
embodiments of the disclosure. All other embodiments obtained by
those skilled in the art on the basis of the embodiments in the
disclosure without creative work shall fall within the scope of
protection of the disclosure.
[0058] It should be understood that the technical solutions of the
embodiments of the disclosure may be applied to various
communication systems, for example: a Global System of Mobile
Communication (GSM), a Code Division Multiple Access (CDMA) system,
a Wideband Code Division Multiple Access (WCDMA) system, a General
Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an
LTE Frequency Division Duplex (FDD) system, an LTE Time Division
Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), a
Worldwide Interoperability for Microwave Access (WiMAX)
communication system and the like.
[0059] In addition, terms "system" and "network" in the disclosure
may usually be exchanged for use in the disclosure. Term "and/or"
in the disclosure is only an association relationship for
describing associated objects, and represents that there may exist
three relationships. For example, A and/or B may represent the
three conditions that: A exists independently, A and B both exist,
and B exists independently. Moreover, the character "/" in the
disclosure usually represents that the associated objects form an
"or" relationship.
[0060] FIG. 1 illustrates a wireless communication system 100
applied in the embodiments of the disclosure. The wireless
communication system 100 may include at least one piece of network
equipment 110. The network equipment 110 may be equipment
communicating with terminal equipment. Each piece of network
equipment 100 may provide communication coverage for a specific
geographical region, and may communicate with terminal equipment in
the coverage. The network equipment 110 may be a Base Transceiver
Station (BTS) in the GSM or the CDMA system, may also be a NodeB
(NB) in the WCDMA system, and may further be an Evolutional Node B
(eNB or eNodeB) in the LTE system or a wireless controller in a
Cloud Radio Access Network (CRAN). Or the network equipment may be
a relay station, an access point, vehicle-mounted equipment,
wearable equipment, network-side equipment in a future
5th-Generation (5G) network, network equipment in a future evolved
Public Land Mobile Network (PLMN) and the like.
[0061] The wireless communication system 100 further includes
multiple pieces of terminal equipment 120 located within the
coverage of the network equipment 110. The terminal equipment 120
may be mobile or fixed. The terminal equipment 120 may be an access
terminal, User Equipment (UE), a user unit, a user station, a
mobile radio station, a mobile station, a remote station, a remote
terminal, mobile equipment, a user terminal, a terminal, wireless
communication equipment, a user agent or a user device. The access
terminal may be a cell phone, a cordless phone, a Session
Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL)
station, a Personal Digital Assistant (PDA), handheld equipment
with a wireless communication function, computing equipment or
other processing equipment connected to a wireless modem,
vehicle-mounted equipment, wearable equipment, terminal equipment
in the future 5G network, terminal equipment in the future evolved
PLMN and the like.
[0062] FIG. 1 exemplarily illustrates one piece of network
equipment and two pieces of terminal equipment. Optionally, the
wireless communication system 100 may include multiple pieces of
network equipment and another amount of terminal equipment may be
included in coverage of each piece of network equipment, which will
not be limited in the embodiments of the disclosure.
[0063] Optionally, the wireless communication system 100 may
further include another network entity such as a network controller
and a mobility management entity, which will not be limited in the
embodiments of the disclosure.
[0064] The wireless communication system 100 may support LAA. For
example, the wireless communication system 100 is specifically a
Licensed Assisted Access Using Long Term Evolution (LAA-LTE) or
another communication system, which will not be limited in the
embodiments of the disclosure. When the network equipment 110 and
the terminal equipment 120 communicate in an LAA manner, not only a
licensed spectrum but also an unlicensed spectrum may be adopted,
wherein the unlicensed spectrum is integrated in the LAA manner
into a cellular communication network (for example, LTE) that
originally adopts only the licensed spectrum, and may serve as a
secondary component carrier in a carrier aggregation scenario. The
licensed spectrum may be used only after licensing. The unlicensed
spectrum requires no licensing, and may be legally used by anyone.
In this case, a carrier on the licensed spectrum is called as a
licensed carrier, and a carrier on the unlicensed spectrum is
called as an unlicensed carrier.
[0065] In an LAA-LTE system or another communication system
supporting LAA, network equipment may schedule an unlicensed
carrier under assistance of a licensed carrier, wherein an LBT
mechanism may be adopted for access of the unlicensed carrier,
which, however, may not form any limit to the embodiments of the
disclosure. Optionally, before performing data transmission on the
unlicensed carrier, the network equipment may contend with a node
in a Wireless Local Area Network (WLAN) and/or another node
adopting LAA in the cellular network for resources on the
unlicensed carrier and perform data transmission by using the
resources obtained by contention after successful contention.
[0066] For ease of description, continuous time resources on the
unlicensed carrier which the network equipment obtains by
contention every time may be determined as a time resource set. The
time resource set may include at least one continuous subframe or
include the at least one continuous subframe and part of time
resources in a certain subframe (for example, at least one
continuous symbol in a certain subframe), for example, including a
subframe n to subframe in which are continuously distributed and at
least one continuous symbol in a subframe m+1, which will not form
any limit to the embodiments of the disclosure.
[0067] Each time resource set obtained by the network equipment by
contention may include continuously distributed time resources, and
the time resources included in different time resource sets may be
distributed at intervals, wherein the intervals may be one or more
subframes and may also be one or more symbols, which will not be
limited in the embodiments of the disclosure.
[0068] The network equipment may perform data transmission in the
time resource sets obtained by contention. For example, the network
equipment may send downlink information, for example, signaling or
a PDSCH, to the terminal equipment in the time resource sets and
may also receive uplink information, for example, an uplink
feedback or a PUSCH, sent by the terminal equipment in the time
resource sets, which will not be limited in the embodiments of the
disclosure.
[0069] FIG. 2 illustrates a method 200 for transmitting uplink
information according to an embodiment of the disclosure. The
method may be applied to transmission of the uplink information on
an unlicensed carrier in LAA.
[0070] In S210, network equipment obtains at least one previous
time resource set of an unlicensed carrier by contention, and sends
downlink information to terminal equipment in the at least one
previous time resource set.
[0071] Optionally, the network equipment may adopt an LBT mechanism
to contend for a transmission channel of the unlicensed carrier.
The network equipment obtains each of the at least one previous
time resource set by contention, and may send the downlink
information in the at least one previous time resource set.
Optionally, the network equipment may further send the downlink
information to other terminal equipment in the at least one
previous time resource set.
[0072] In S220, the network equipment continues contending for
transmission resources on the unlicensed carrier.
[0073] If the network equipment obtains the transmission resources
on the unlicensed carrier by contention, a time resource set formed
by continuous time resources, currently obtained by the network
equipment by contention, on the unlicensed carrier may be called as
a present time resource set.
[0074] In S230, terminal equipment determines a present time
resource set for data transmission of the network equipment on the
unlicensed carrier.
[0075] The terminal equipment may determine in multiple manners the
time resource set currently obtained by the network equipment by
contention, i.e., the present time resource set. Optionally, the
network equipment may send information in the present time resource
set, the information may include indication information or a PDSCH,
and correspondingly, the terminal equipment may determine the
present time resource set, obtained by the network equipment by
contention, of the unlicensed carrier according to the information
received in the present time resource set. For example, the network
equipment may send the information in a starting time resource of
the present time resource set, and may specifically send it to the
terminal equipment in a broadcast form or a unicast form, which
will not be limited in the embodiments of the disclosure.
[0076] As an alternative embodiment, the network equipment may send
first information in the present time resource set, the first
information being configured to indicate a set number of the
present time resource set. Correspondingly, the terminal equipment
may determine the set number of the present time resource set
according to the first information, namely determining the number
of the present time resource set in the time resource sets obtained
by the network equipment by contention. The first information may
explicitly or implicitly indicate the set number of the present
time resource set. Optionally, the first information may include
number information of a system frame where a starting time resource
in the present time resource set is located. For example, the first
information may include System Frame Number (SFN) information of a
first subframe in the present time resource set. Alternatively, the
first information may include set number information of the present
time resource set. For example, time resource sets obtained by the
network equipment by contention on the unlicensed carrier may be
numbered according to a time sequence. However, this will not form
any limit to the embodiments of the disclosure.
[0077] Optionally, the terminal equipment may further determine the
continuous time resources included in the present time resource set
according to the first information. For example, the network
equipment may send the first information on a specific time
resource (for example, the specific time resource may specifically
be an Nth time resource unit in the present time resource set, and
the time resource unit may be a subframe or a symbol or another
unit) in the present time resource set, the specific time resource
may be the starting time resource in the present time resource set,
and correspondingly, the terminal equipment may determine the
continuous time resources included in the present time resource set
according to the specific time resource. However, this will not
form any limit to the embodiments of the disclosure.
[0078] The network equipment may send the first information in the
broadcast form and may also send the first information in the
unicast or multicast manner, which will not be limited in the
embodiments of the disclosure.
[0079] In S240, the terminal equipment sends uplink information to
the network equipment on a first time resource of the unlicensed
carrier, wherein the uplink information corresponds to the downlink
information transmitted by the network equipment in the at least
one previous time resource set.
[0080] Each time resource set in the at least one previous time
resource set is located before the present time resource set, that
is, any time resource in the at least one previous time resource
set is located before any time resource in the present time
resource set. The network equipment obtains the at least one
previous time resource set of the unlicensed carrier by contention,
and transmits the downlink information in each of the at least one
previous time resource set, and the downlink information may
include a PDSCH or downlink control signaling. The terminal
equipment sends the uplink information corresponding to the
downlink information in the at least one previous time resource set
to the network equipment in the present time resource set. If the
downlink information includes the PDSCH, the uplink information
sent by the terminal equipment may include feedback information,
for example, an ACK/NACK, configured to indicate whether the
terminal equipment successfully receives the PDSCH. If the downlink
information includes the downlink control signaling, for example,
DCI, the uplink information sent by the terminal equipment may
include a PUSCH scheduled by the downlink control signaling. If the
downlink information includes a reference signal, for example, a
Cell Reference Signal (CRS) or a Channel State Information
Reference Signal (CSI-RS), the uplink information sent by the
terminal equipment may include a measurement result for the
reference signal by the terminal equipment, for example, Channel
State Information (CSI). However, this will not form any limit to
the embodiments of the disclosure.
[0081] Optionally, as another alternative embodiment, if the
terminal equipment does not receive any downlink information sent
by the network equipment in the at least one previous time resource
set or does not receive any downlink information requiring uplink
information to be sent in the at least one previous time resource
set, the terminal equipment may send no uplink information to the
network equipment in the present time resource set. However, this
will not form any limit to the embodiments of the disclosure.
[0082] In the embodiment of the disclosure, the terminal equipment
may determine the first time resource in multiple manners.
Optionally, the first time resource may be determined according to
a preset rule, and the preset rule may be specified by a protocol
and preset in the terminal equipment, or may be configured by the
network equipment in advance. For example, the first time resource
may be an Mth time resource in the present time resource set, and
the time resource unit may be a subframe or a symbol or another
unit. Optionally, the network equipment may send the first
information in the present time resource set, and the terminal
equipment may determine the first time resource according to the
first information and a preset interval between the time resource
for sending the first information and the first time resource. For
example, the first time resource and the time resource for sending
the first information are adjacent or spaced by a fixed number of
time resources, which will not be limited in the embodiments of the
disclosure.
[0083] Optionally, as another embodiment, the terminal equipment
may receive fourth information sent by the network equipment, the
fourth information indicating the first time resource for
transmitting the uplink information, and determine the first time
resource according to the fourth information, wherein the fourth
information may be sent by the network equipment in the present
time resource set or sent by the network equipment in the at least
one previous time resource set, which will not be limited in the
embodiments of the disclosure. The fourth information may
explicitly or implicitly indicate the first time resource. For
example, the fourth information may include resource number
information of the first time resource. For example, the first time
resource may specifically be a first subframe and the fourth
information includes time resource number information of the first
subframe, which will not be limited in the embodiments of the
disclosure.
[0084] In the embodiment of the disclosure, the terminal equipment
may determine a corresponding relationship between the first time
resource and the at least one previous time resource set in
multiple manners. Optionally, the terminal equipment may determine
the corresponding relationship according to a preset rule. For
example, a corresponding relationship between the at least one
previous time resource set and the present time resource set is
predetermined or specified. For example, the at least one previous
time resource set is one or more previous time resource sets of the
present time resource set, and correspondingly, the terminal
equipment may determine the corresponding relationship between the
first time resource and the at least one previous time resource set
according to the corresponding relationship between the present
time resource set and the at least one previous time resource set
and the first time resource for transmitting the uplink information
in the present time resource set. For another example, the
corresponding relationship between a time resource in the present
time resource set and a previous time resource set is predetermined
or specified. For example, an Lth time resource unit in the present
time resource set has a correspondence with a Pth previous time
resource set of the present time resource set, which, however, will
not form any limit to the embodiments of the disclosure.
[0085] Optionally, as another embodiment, the terminal equipment
may receive second information sent by the network equipment in the
present time resource set or third information sent by the network
equipment in the at least one previous time resource set.
Correspondingly, the terminal equipment may determine the
corresponding relationship between the first time resource and/or
the present time resource set and the at least one previous time
resource set according to the second information or the third
information. Optionally, the second information may include at
least one of: set number information of each of the at least one
previous time resource set or number information of a system frame
where a starting time resource of each of the at least one previous
time resource set is located (for example, SFN information of a
first subframe). The uplink information sent by the terminal
equipment on the first time resource may correspond to part or all
of the downlink information in each of the at least one previous
time resource set. Optionally, the second information may further
include time resource number information of at least one target
time resource unit in the at least one previous time resource set,
wherein the target time resource unit may specifically be a target
subframe or another time resource unit, and in this case, the
uplink information sent on the first time resource corresponds to
the downlink information on the at least one target time resource
unit. However, this will not form any limit to the embodiments of
the disclosure.
[0086] Descriptions will be made below with the condition that a
time resource set is specifically a subframe set and a time
resource unit is specifically a subframe as an example. Assume that
the present time resource set is specifically a subframe set n and
the at least one previous time resource set includes a subframe set
n-1 and a subframe set n-2. The first time resource includes a
subframe a and a subframe b, wherein the subframe a corresponds to
the subframe set n-2, the subframe b corresponds to the subframe
set n-1, an SFN of a first subframe in the subframe set n-2 is . .
. 01, and an SFN of a first subframe in subframes in the subframe
set n-1 is . . . 10. As illustrated in FIG. 3, the second
information may indicate that the subframe a corresponds to the SFN
. . . 01 and the subframe b corresponds to the SFN . . . 10. That
is, the subframe a is configured for transmission of uplink
information corresponding to the subframe set with the SFN . . .
01, and the subframe b is configured for transmission of uplink
information corresponding to the subframe set with the SFN . . .
10, wherein a range of the SFN of the subframe may be 01,023, and
correspondingly, the SFN may be indicated by 10 bits.
[0087] Optionally, for reducing a signaling overhead, the network
equipment may indicate an SFN of a first subframe in a certain
previous time resource set by adopting M bits in the second
information, M being an integer more than or equal to 2. For
example, the second information contains last M bits or M bits at
other locations of the SFN, which will not be limited in the
embodiments of the disclosure.
[0088] As illustrated in FIG. 4, the second information indicates a
set number of the previous time resource set by adopting 2 bits.
Specifically, a set number of the subframe set n-2 is 10, a set
number of the subframe set n-1 is 11, and then the second
information may indicate that the subframe a corresponds to the set
number 10 and the subframe b corresponds to the set number 11.
[0089] If a specific time resource in the at least one previous
time resource set is not indicated in the second information, the
terminal equipment may send uplink information corresponding to all
time resources or all downlink time resources or all downlink time
resources that have received downlink information in each of the at
least one previous time resource set on the first time resource as
a default. Optionally, the second information may further include
time resource number information of a time resource corresponding
to the first time resource in a certain previous time resource set.
For example, the second information may further include subframe
number information of at least one target subframe corresponding to
the first time resource in the previous time resource set, wherein
a value of the subframe number may be 0-9. Optionally, the second
information may include 4 bits for indicating the subframe number
of the subframe corresponding to the first time resource, or 10
subframes in a radio frame may be divided into L groups in advance,
wherein 9, and a number of the group the subframe corresponding to
the first time resource is indicated in the second information by
adopting .left brkt-top.log.sub.2 L.right brkt-bot. bits.
[0090] As illustrated in FIG. 5, the subframe a corresponds to a
subframe 4 in the subframe set n-2, and the subframe b corresponds
to a subframe 2 in the subframe set n-1. Then, the second
information may specifically indicate that the subframe a
corresponds to a subframe with SFN information of 01 and a subframe
number of 4, and the subframe b corresponds to a subframe with SFN
information of 10 and a subframe number of 2, which, however, will
not form any limit to the embodiments of the disclosure.
[0091] It should be noted that the example of FIG. 3 to FIG. 5 is
intended not to limit the scope of the embodiment of the disclosure
but to help those skilled in the art better understood the
embodiments of the disclosure. Those skilled in the art may
obviously make various equivalent modifications or variations
according to the given example of FIG. 3 to FIG. 5, and such
modifications or variations also fall within the scope of the
embodiment of the disclosure.
[0092] As another alternative embodiment, the second information is
further configured to indicate a number of subframes and/or a
number of downlink subframes in the at least one previous time
resource set, which, however, will not form any limit to the
embodiments of the disclosure.
[0093] As another alternative embodiment, the terminal equipment
may determine the corresponding relationship between the first time
resource and the at least one previous time resource set according
to the third information. Optionally, the third information may
further be configured to indicate the present time resource set or
indicate the first time resource in the present time resource set.
For example, the third information may include the set number
information of the present time resource set or may further include
a location of the first time resource in the present time resource
set. As a specific example, the network equipment sends DCI to the
terminal equipment in a time resource set L obtained by contention,
the DCI being configured to schedule the PUSCH of the terminal
equipment and indicate the PUSCH to be transmitted in a time
resource set L+M obtained by contention, M being an integer more
than or equal to 1. However, this will not form any limit to the
embodiments of the disclosure.
[0094] It should be understood that the first information, the
second information, the third information and the fourth
information may be contained in different messages or part of the
information may be contained in the same message. For example, the
first information or the fourth information may be contained with
the second information in the same message, or the first
information and the third information may be contained in the same
message, which will not be limited in the embodiments of the
disclosure.
[0095] Therefore, according to the method for transmitting the
uplink information on the unlicensed carrier in the embodiments of
the disclosure, the network equipment contends for transmission
resources on the unlicensed carrier, and the terminal equipment
transmits the uplink information in the present time resource set,
obtained by the network equipment by contention, of the unlicensed
carrier. The uplink information corresponds to the downlink
information transmitted by the network equipment in the at least
one previous time resource set, and the terminal equipment is not
required to contend for the transmission resources on the
unlicensed carrier. In addition, the network equipment may
configure all terminal equipment to adopt the same uplink and
downlink subframe correspondence, and is not required to determine
an uplink and downlink correspondence according to a respective
condition of each piece of terminal equipment, so that complexity
of the network equipment is reduced, and system performance is
improved.
[0096] In the embodiment of the disclosure, the terminal equipment
may send the uplink information on the first time resource.
Optionally, the first time resource may correspond to one or more
time resource units, for example, one or more subframes, and the
uplink information may correspond to the downlink information in
one previous time resource set, or may correspond to the downlink
information in each of multiple previous time resource sets, and
may specifically correspond to the downlink information in one or
more time resource units in each previous time resource set. That
is, in the embodiment of the disclosure, the terminal equipment may
send the uplink information corresponding to the downlink
information in one or more other time resource units on one time
resource unit. For example, an ACK/NACK corresponding to a PDSCH in
one or more other subframes is fed back in one subframe. However,
this will not form any limit to the embodiments of the
disclosure.
[0097] Optionally, the terminal equipment may transmit feedback
information on a PUCCH or a PUSCH, and the feedback information may
specifically be an ACK/NACK. If the terminal equipment transmits
the ACK/NACK on the PUCCH, the terminal equipment may optionally
transmit the ACK/NACK in PUCCH format 3 or PUCCH format 4 or PUCCH
format 5 or another format, which, however, will not form any limit
to the embodiments of the disclosure.
[0098] The terminal equipment may transmit an N-bit ACK/NACK in the
first time resource. N may be a number of all time resource units
or a number of all downlink time resource units included in the at
least one previous time resource set, and in this case, the
terminal equipment may fill a time resource unit receiving no PDSCH
with 0 or 1; or, N may also be a number of time resource units of
PDSCHs received by the terminal equipment and sent by the network
equipment in the at least one previous time resource set, or may
further be a numerical value configured by the network equipment.
However, this will not form any limit to the embodiments of the
disclosure.
[0099] As an alternative embodiment, N is determined by the
following formula:
N = i = 0 K - 1 .times. C X i , ( 1 ) ##EQU00005##
[0100] where K represents a number of the at least one previous
time resource set, C represents a maximum bit number of the
ACK/NACK corresponding to each PDSCH, X.sub.i is equal to a number
of time resource units included in an ith previous time resource
set of the at least one previous time resource set or equal to a
number of downlink time resource units included in the ith previous
time resource set or equal to a parameter value configured for the
ith previous time resource set by the network equipment, and the
parameter value may not be greater than the number of the time
resource units included in the ith previous time resource set.
[0101] As another alternative embodiment, N is determined by the
following formula:
N = i = 0 K - 1 .times. Y i , ( 2 ) ##EQU00006##
[0102] where K represents the number of the at least one previous
time resource set, Y.sub.i is equal to the parameter value
configured for the ith previous time resource set of the at least
one previous time resource set by the network equipment, and the
parameter value is an integer more than or equal to 0.
[0103] In the embodiment of the disclosure, if multiple pieces of
terminal equipment correspond to the same uplink and downlink
subframe correspondence (or called as a HARQ time sequence
relationship), there may occur the condition that at least one two
pieces of terminal equipment send uplink information to the network
equipment on a same time resource of the unlicensed carrier. In
this case, the at least two pieces of terminal equipment may
transmit the uplink information by adopting different resources
(for example, frequency resources, code resources and the like) on
the same first time resource. Optionally, resources corresponding
to different terminal equipment may be predefined and may also be
configured by the network equipment, which will not be limited in
the embodiments of the disclosure.
[0104] As another alternative embodiment, the method 200 further
includes the following operations.
[0105] The network equipment sends fifth information, the fifth
information being configured to indicate resource number
information corresponding to the terminal equipment on the first
time resource.
[0106] The fifth indication information may be sent in the unicast,
multicast or broadcast form. For example, the network equipment may
broadcast the fifth information, the fifth information being
configured to indicate resource number information corresponding to
each piece of terminal equipment in multiple pieces of terminal
equipment on the first time resource. In this case, the terminal
equipment may send the uplink information to the network equipment
on the first time resource by adopting transmission resources
indicated by the fifth information.
[0107] It should be understood that the embodiment is described
with the condition that the uplink information includes the
ACK/NACK and/or the PUSCH as an example, and optionally, the uplink
information may further include a scheduling request and/or CSI.
However, this will not form any limit to the embodiments of the
disclosure.
[0108] It should also be understood that a serial number of each
process does not mean the execution order, and the execution order
of each process should be determined according to its function and
an internal logic, which should not form any limit to an
implementation process of the embodiments of the disclosure.
[0109] The method for transmitting the uplink information on the
unlicensed carrier according to the embodiments of the disclosure
has been described above in combination with FIG. 1 to FIG. 5 in
detail, and a device for transmitting the uplink information on the
unlicensed carrier according to the embodiments of the disclosure
will be described below in combination with FIG. 6 to FIG. 9.
[0110] FIG. 6 illustrates a device 300 for transmitting uplink
information on an unlicensed carrier according to an embodiment of
the disclosure. The device 300 includes the following units.
[0111] A determination unit 310 is configured to determine a
present time resource set configured for data transmission of
network equipment on the unlicensed carrier, wherein the network
equipment performs data transmission on the unlicensed carrier
through time resource sets obtained by contention, time resources
in each time resource set obtained by contention are continuously
distributed, and the time resources in different time resource sets
are distributed at intervals.
[0112] A sending unit 320 is configured to send the uplink
information to the network equipment on a first time resource in
the present time resource set determined by the determination unit
310, the uplink information corresponding to downlink information
transmitted by the network equipment in at least one previous time
resource set.
[0113] Specifically, the time resource sets obtained by the network
equipment by contention include the present time resource set and
the at least one previous time resource set, and any time resource
in the at least one previous time resource set is located before
any time resource in the present time resource set.
[0114] Optionally, the downlink information includes DCI, and the
uplink information includes a PUSCH.
[0115] Optionally, as another embodiment, the downlink information
includes a PDSCH, and the uplink information includes an
ACK/NACK.
[0116] As another alternative embodiment, the device 300 further
includes: a first receiving unit, configured to receive first
information sent by the network equipment.
[0117] Correspondingly, the determination unit 310 is specifically
configured to determine a set number of the present time resource
set obtained by the network equipment by contention according to
the first information received by the first receiving unit.
[0118] As an alternative embodiment, the first information includes
number information of a system frame where a starting time resource
in the present time resource set is located, or the first
information includes set number information of the present time
resource set.
[0119] As an alternative embodiment, the device 300 further
includes: a second receiving unit, configured to, before the
sending unit 320 sends the uplink information to the network
equipment on the first time resource in the present time resource
set determined by the determination unit 310, receive second
information sent by the network equipment in the present time
resource set, the second information indicating that the first time
resource or the present time resource set is configured for
transmission of the uplink information corresponding to the
downlink information transmitted by the network equipment in the at
least one previous time resource set.
[0120] As another alternative embodiment, the device 300 further
includes: a second receiving unit, configured to, before the
sending unit 320 sends the uplink information to the network
equipment on the first time resource in the present time resource
set determined by the determination unit 310, receive third
information sent by the network equipment in the at least one
previous time resource set, the third information indicating that
the uplink information corresponding to the downlink information
transmitted by the network equipment in the at least one previous
time resource set is transmitted in the present time resource set
or the first time resource.
[0121] As another alternative embodiment, the determination unit
310 is further configured to, before the sending unit 320 sends the
uplink information to the network equipment on the first time
resource in the present time resource set determined by the
determination unit, determine according to a preset rule that the
present time resource set or the first time resource is configured
for transmission of the uplink information corresponding to the
downlink information transmitted by the network equipment in the at
least one previous time resource set.
[0122] As an alternative embodiment, the third information includes
set number information of the present time resource set.
[0123] As an alternative embodiment, the second information
includes set number information of each of the at least one
previous time resource set.
[0124] As another alternative embodiment, the second information
further includes time resource number information of at least one
target time resource unit in the at least one previous time
resource set, wherein the first time resource is configured for
transmission of the uplink information corresponding to the
downlink information transmitted by the network equipment on the at
least one target time resource unit.
[0125] As another alternative embodiment, the determination unit
310 is further configured to, before the sending unit 320 sends the
uplink information to the network equipment on the first time
resource in the present time resource set, determine the first time
resource in the present time resource set according to a preset
rule.
[0126] As another alternative embodiment, the device 300 further
includes: a third receiving unit, configured to, before the sending
unit 320 sends the uplink information to the network equipment on
the first time resource in the present time resource set, receive
fourth information sent by the network equipment in the present
time resource set, the fourth information being configured to
indicate the first time resource.
[0127] As another alternative embodiment, the downlink information
includes the PDSCH, and the uplink information includes the
ACK/NACK. In this case, the sending unit 320 is specifically
configured to send an N-bit ACK/NACK to the network equipment
through a PUCCH or PUSCH on the first time resource, the N-bit
ACK/NACK being configured to indicate whether the terminal
equipment successfully receives the PDSCH sent by the network
equipment in the at least one previous time resource set.
[0128] It should be understood that the device 300 is embodied in
form of a functional unit. Here, the term "unit" may refer to an
Application Specific Integrated Circuit (ASIC), an electronic
circuit, a processor (for example, a shared processor, a dedicated
processor or a group processor) configured to execute one or more
software or firmware programs, a memory, a merged logic circuit
and/or another proper components supporting a described function.
In an alternative example, those skilled in the art should know
that the device 300 may specifically be the terminal equipment in
the abovementioned embodiments and the device 300 may be configured
to execute each flow and/or step corresponding to the terminal
equipment in the abovementioned method embodiments, which, for
avoiding repetitions, will not be elaborated herein.
[0129] FIG. 7 illustrates another device 400 for transmitting
uplink information on an unlicensed carrier according to an
embodiment of the disclosure. The device 400 includes the following
units.
[0130] A determination unit 410 is configured to determine a
present time resource set for data transmission on the unlicensed
carrier, wherein network equipment performs data transmission on
the unlicensed carrier through time resource sets obtained by
contention, time resources in each time resource set are
continuously distributed, and the time resources in different time
resource sets are distributed at intervals.
[0131] A receiving unit 420 is configured to receive the uplink
information sent by terminal equipment on a first time resource in
the present time resource set determined by the determination unit
410, the uplink information corresponding to downlink information
transmitted by the network equipment in at least one previous time
resource set.
[0132] Specifically, the time resource sets obtained by the network
equipment by contention include the present time resource set and
the at least one previous time resource set, and any time resource
in the at least one previous time resource set is located before
any time resource in the present time resource set.
[0133] As an alternative example, the downlink information includes
DCI, and the uplink information includes a PUSCH.
[0134] As another alternative embodiment, the downlink information
includes a PDSCH, and the uplink information includes an
ACK/NACK.
[0135] As another alternative embodiment, the device 400 further
includes the following units.
[0136] A first sending unit is configured to send first information
before the receiving unit 420 receives the uplink information sent
by the terminal equipment on the first time resource in the present
time resource set, the first information being configured to
indicate a set number of the present time resource set.
[0137] As an alternative embodiment, the first information includes
number information of a system frame where a starting time resource
in the present time resource set is located, or the first
information includes set number information of the present time
resource set.
[0138] As an alternative embodiment, the device 400 further
includes: a second sending unit, configured to, before the
receiving unit 420 receives the uplink information send by the
terminal equipment on the first time resource in the present time
resource set, send second information in the present time resource
set, the second information indicating that the first time resource
or the present time resource set is configured for transmission of
the uplink information corresponding to the downlink information
transmitted by the network equipment in the at least one previous
time resource set.
[0139] As another alternative embodiment, the device 400 further
includes: a second sending unit, configured to, before a sending
unit sends the uplink information to the network equipment on the
first time resource in the present time resource set, send third
information sent in the previous time resource set, the third
information indicating that the uplink information corresponding to
the downlink information transmitted by the network equipment in
the at least one previous time resource set is transmitted in the
present time resource set or the first time resource.
[0140] As another alternative embodiment, the determination unit
410 is further configured to determine according to a preset rule
that the present time resource set or the first time resource is
configured for transmission of the uplink information corresponding
to the downlink information transmitted in the at least one
previous time resource set.
[0141] As an alternative embodiment, the third information includes
set number information of the present time resource set.
[0142] As an alternative embodiment, the second information
includes set number information of each of the at least one
previous time resource set.
[0143] As another alternative embodiment, the second information
further includes time resource number information of at least one
target time resource unit in the at least one previous time
resource set, wherein the first time resource is configured for
transmission of the uplink information corresponding to the
downlink information transmitted by the network equipment on the at
least one target time resource unit.
[0144] As another alternative embodiment, the device 400 further
includes: a third sending unit, configured to, before the receiving
unit 420 receives the uplink information sent by the terminal
equipment on the first time resource in the present time resource
set, send fourth information in the present time resource set, the
fourth information being configured to indicate the first time
resource.
[0145] As another alternative embodiment, the downlink information
includes the PDSCH, and the uplink information includes the
ACK/NACK. In this case, the receiving unit 420 is specifically
configured to receive an N-bit ACK/NACK transmitted by the terminal
equipment through a PUCCH or PUSCH on the first time resource, the
N-bit ACK/NACK being configured to indicate whether the terminal
equipment successfully receives the PDSCH sent by the network
equipment in the at least one previous time resource set.
[0146] It should be understood that the device 400 is embodied in
form of a functional unit. Here, the term "unit" may refer to an
ASIC, an electronic circuit, a processor (for example, a shared
processor, a dedicated processor or a group processor) configured
to execute one or more software or firmware programs, a memory, a
merged logic circuit and/or another proper components supporting a
described function. In an alternative example, those skilled in the
art should know that the device 300 may specifically be the
terminal equipment in the abovementioned embodiments, and the
device 400 may be configured to execute each flow and/or step
corresponding to the network equipment in the abovementioned method
embodiments, which, for avoiding repetitions, will not be
elaborated herein.
[0147] FIG. 8 illustrates another device 500 for transmitting
uplink information on an unlicensed carrier according to an
embodiment of the disclosure. The device 500 includes the following
components.
[0148] A processor 510 is configured to determine a present time
resource set configured for data transmission of network equipment
on the unlicensed carrier, wherein the network equipment performs
data transmission on the unlicensed carrier through time resource
sets obtained by contention, time resources included in each time
resource set are continuously distributed, and the time resources
in different time resource sets are distributed at intervals;
and
[0149] A transceiver 520 is configured to send the uplink
information to the network equipment on a first time resource in
the present time resource set determined by the processor 510, the
uplink information corresponding to downlink information
transmitted by the network equipment in at least one previous time
resource set.
[0150] Specifically, the time resource sets obtained by the network
equipment by contention include the present time resource set and
the at least one previous time resource set, and any time resource
in the at least one previous time resource set is located before
any time resource in the present time resource set.
[0151] It should be understood that the device 500 may specifically
be the terminal equipment in the abovementioned embodiments and may
be configured to execute each flow and/or step corresponding to the
terminal equipment in the abovementioned method embodiments.
Optionally, the device 500 may further include a memory, and the
memory may include a Read-Only Memory (ROM) and a Random Access
Memory (RAM), and provides instructions and data for the processor.
Part of the memory may further include a nonvolatile random access
memory. For example, the memory may further store information of an
equipment type. The processor may be configured to execute the
instructions stored in the memory, and when the processor executes
the instructions stored in the memory, the processor is configured
to execute each step and/or flow of the abovementioned method
embodiments. Optionally, the device 500 may further include a bus,
and the processor, the transceiver and the memory may be connected
through the bus.
[0152] FIG. 9 illustrates another device 600 for transmitting
uplink information on an unlicensed carrier according to an
embodiment of the disclosure. The device 600 includes the following
components.
[0153] A processor 610 is configured to determine a present time
resource set for data transmission on the unlicensed carrier,
wherein network equipment performs data transmission on the
unlicensed carrier through time resource sets obtained by
contention, time resources included in each time resource set are
continuously distributed, and the time resources in different time
resource sets are distributed at intervals.
[0154] A transceiver 620 is configured to receive the uplink
information sent by terminal equipment on a first time resource in
the present time resource set determined by the processor 610, the
uplink information corresponding to downlink information
transmitted by the network equipment in at least one previous time
resource set.
[0155] Specifically, the time resource sets obtained by the network
equipment by contention include the present time resource set and
the at least one previous time resource set, and any time resource
in the at least one previous time resource set is located before
any time resource in the present time resource set.
[0156] It should be understood that the device 600 may specifically
be the network equipment in the abovementioned embodiments and may
be configured to execute each flow and/or step corresponding to the
network equipment in the abovementioned method embodiments.
Optionally, the device 600 may further include a memory, and the
memory may include a ROM and a RAM, and provides instructions and
data for the processor. Part of the memory may further include a
nonvolatile random access memory. For example, the memory may
further store information of an equipment type. The processor may
be configured to execute the instructions stored in the memory, and
when the processor executes the instructions stored in the memory,
the processor is configured to execute each step and/or flow of the
abovementioned method embodiments. Optionally, the device 600 may
further include a bus, and the processor, the transceiver and the
memory may be connected through the bus.
[0157] It should be understood that, in the embodiments of the
disclosure, the processor may be a Central Processing Unit (CPU),
and the processor may also be another universal processor, a
Digital Signal Processor (DSP), an ASIC, a Field-Programmable Gate
Array (FPGA) or another programmable logic device, discrete gate or
transistor logical device, discrete hardware component and the
like. The universal processor may be a microprocessor or the
processor may also be any conventional processor and the like.
[0158] In an implementation process, each operation of the method
may be implemented by an integrated logic circuit of hardware in
the processor or instructions in a software form. The operations of
the method disclosed in combination with the embodiments of the
disclosure may be directly embodied to be executed and implemented
by a hardware processor or executed and implemented by combining
hardware and software modules in the processor. The software module
may be located in a mature storage medium in this field such as a
RAM, a flash memory, a ROM, a programmable ROM or electrically
erasable programmable ROM and a register. The storage medium is
located in the memory, and the processor executes the instructions
in the memory and completes the operations of the method in
combination with hardware. For avoiding repetitions, no more
detailed descriptions will be made herein.
[0159] Those of ordinary skilled in the art may realize that each
method step and unit described in combination with the embodiments
disclosed in the disclosure may be implemented by electronic
hardware, computer software or a combination of the two. For
clearly describing interchangeability of hardware and software, the
operations and composition of each embodiment have generally been
described in the specification according to functions, and whether
these functions are executed in a hardware or software manner
depends on specific applications and design constraints of the
technical solutions. Those of ordinary skilled in the art may
realize the described functions for each specific application by
virtue of different methods, and such realization shall fall within
the scope of the disclosure.
[0160] Those skilled in the art may clearly learn about that
specific working processes of the system, device and unit described
above may refer to the corresponding processes in the method
embodiment and will not be elaborated herein for convenient and
brief description.
[0161] In some embodiments provided by the application, it should
be understood that the disclosed system, device and method may be
implemented in another manner. For example, the device embodiment
described above is only schematic, and for example, division of the
units is only logic function division, and other division manners
may be adopted during practical implementation. For example,
multiple units or components may be combined or integrated into
another system, or some characteristics may be neglected or not
executed. In addition, coupling or direct coupling or communication
connection between each displayed or discussed component may be
indirect coupling or communication connection, implemented through
some interfaces, of the device or the units, and may be electrical
and mechanical or adopt other forms.
[0162] The units described as separate parts may or may not be
physically separated, and parts displayed as units may or may not
be physical units, and namely may be located in the same place, or
may also be distributed to multiple network units. Part or all of
the units may be selected to achieve the purpose of the solutions
of the embodiments of the disclosure according to a practical
requirement.
[0163] In addition, each function unit in each embodiment of the
disclosure may be integrated into a processing unit, each unit may
also exist independently, and two or more than two unit may also be
integrated into a unit. The integrated unit may be implemented in
form of hardware, and may also be implemented in form of software
function unit.
[0164] When being implemented in form of software function unit and
sold or used as an independent product, the integrated unit may
also be stored in a computer-readable storage medium. Based on such
an understanding, the technical solutions of the disclosure
substantially or parts making contributions to the conventional art
or all or part of the technical solutions may be embodied in form
of software product, and the computer software product is stored in
a storage medium, including a plurality of instructions configured
to enable a piece of computer equipment (which may be a personal
computer, a server, network equipment or the like) to execute all
or part of the steps of the method in each embodiment of the
disclosure. The abovementioned storage medium includes: various
media capable of storing program codes such as a U disk, a mobile
hard disk, a ROM, a RAM, a magnetic disk or an optical disk.
[0165] The above is only the specific implementation mode of the
disclosure and not intended to limit the scope of protection of the
disclosure. Any variations or replacements apparent to those
skilled in the art within the technical scope disclosed by the
disclosure shall fall within the scope of protection of the
disclosure. Therefore, the scope of protection of the disclosure
shall be subject to the scope of protection of the claims.
* * * * *