US 12,003,466 B2Granted

Resource allocation method and device in TDD system

AssigneeHuawei Technologies Co., Ltd.

InventorsZheng Yu, Wenping Bi, Yue Zhao, Xingqing Cheng

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Abstract

Example resource allocation methods and apparatus are described. One example method includes that a terminal device receives downlink control information sent by a network device, where the downlink control information includes a resource allocation field, the resource allocation field includes formula (I)+5 bits. The terminal device determines the first resource indication value, and determines, based on the first resource indication value, a starting resource block allocated in the uplink bandwidth and a length L CRP, s of consecutive resource blocks allocated in the uplink bandwidth, where M≤LCRBs≤6, and M is a positive integer greater than 1. The terminal device sends data on resources corresponding to the starting resource block and the length of the consecutive resource blocks. The methods and the devices provided in the embodiments of this application may be used in a communications system, for example, V2X, V2V, the Internet of Vehicles, MTC, DE-M, M2M, or the Internet of Things.

Claims20

Dependent claims

A resource allocation method in a time division duplex (TDD) system, comprising:

receiving, by a terminal device, downlink control information from a network device, wherein the downlink control information comprises a resource allocation field, wherein when a system bandwidth is 25, 50, 75, or 100 resource blocks, the resource allocation field comprises 7 bits, 8 bits, 9 bits, or 9 bits, respectively, and wherein:
when the resource allocation field indicates, based on a first resource allocation scheme, resource allocation in an uplink bandwidth,
⌈
log
2
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⌊
N
RB
UL
6
⌋
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⁢
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bits
in
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
+
5
⁢
⁢
bits
of the resource allocation field indicate a narrowband index in the uplink bandwidth, wherein the 5 bits in the
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log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
+
5
⁢
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bits
of the resource allocation field indicate resource allocation in a narrowband for the terminal device, wherein a length of consecutive resource blocks allocated in the narrowband is N, wherein 1≤N≤6, and wherein NRBUL indicates a quantity of resource blocks comprised in the uplink bandwidth;
or
when the resource allocation field indicates, based on a second resource allocation scheme, resource allocation in an uplink bandwidth, the resource allocation field indicates a first resource indication value;
when the terminal device determines, based on the second resource allocation scheme, resources allocated by the network device, determining, by the terminal device, the first resource indication value based on the resource allocation field;
determining, by the terminal device based on the first resource indication value, a starting resource block allocated in the uplink bandwidth and a length LCRBs of consecutive resource blocks allocated in the uplink bandwidth, wherein M≤LCRBs≤6, and wherein M is a positive integer greater than 1;
and
sending, by the terminal device, data on resources corresponding to the starting resource block and the length LCRBs of the consecutive resource blocks.

54 more elements

A data transmission method in a time division duplex (TDD) system, comprising:

determining, by a network device, a resource allocation scheme and a resource allocation field in downlink control information, wherein when a system bandwidth is 25, 50, 75, or 100 resource blocks, the resource allocation field comprises 7 bits, 8 bits, 9 bits, or 9 bits, respectively, and wherein:
when the network device determines to perform resource allocation in a first resource allocation scheme, the resource allocation field indicates, based on the first resource allocation scheme, resource allocation in an uplink bandwidth, wherein
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
⁢
⁢
bits
in
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
+
5
⁢
⁢
bits
of the resource allocation field indicate a narrowband index in the uplink bandwidth, wherein the 5 bits in the
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
+
5
⁢
⁢
bits
of the resource allocation field indicate resource allocation in a narrowband for a terminal device, wherein a length of consecutive resource blocks allocated in the narrowband is N, wherein 1≤N≤6, and wherein NRBUL indicates a quantity of resource blocks comprised in the uplink bandwidth;
when the network device determines to perform resource allocation in a second resource allocation scheme, the resource allocation field indicates, based on the second resource allocation scheme, resource allocation in an uplink bandwidth, wherein the resource allocation field indicates a first resource indication value, wherein the first resource indication value indicates a starting resource block allocated to the terminal device and a length LCRBs of consecutive resource blocks allocated to the terminal device, wherein M≤LCRBs≤6, and wherein M is a positive integer greater than 1;
sending, by the network device, the downlink control information to the terminal device;
and
receiving, by the network device on resources corresponding to the starting resource block and the length LCRBs of the consecutive resource blocks, data sent by the terminal device.

52 more elements

A terminal device, comprising:

at least one processor;
and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
receive downlink control information from a network device, wherein the downlink control information comprises a resource allocation field, wherein when a system bandwidth is 25, 50, 75, or 100 resource blocks, the resource allocation field comprises 7 bits, 8 bits, 9 bits, or 9 bits, respectively, and wherein:
when the resource allocation field indicates, based on a first resource allocation scheme, resource allocation in an uplink bandwidth,
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
⁢
⁢
bits
in
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
+
5
⁢
⁢
bits
of the resource allocation field indicate a narrowband index in the uplink bandwidth, wherein the 5 bits in the
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
+
5
⁢
⁢
bits
of the resource allocation field indicate resource allocation in a narrowband for the terminal device, wherein a length of consecutive resource blocks allocated in the narrowband is N, wherein 1≤N≤6, and wherein NRBUL indicates a quantity of resource blocks comprised in the uplink bandwidth;
when the resource allocation field indicates, based on a second resource allocation scheme, resource allocation in an uplink bandwidth, the resource allocation field indicates a first resource indication value;
when determining, based on the second resource allocation scheme, resources allocated by the network device, determine the first resource indication value based on the resource allocation field;
determine, based on the first resource indication value, a starting resource block allocated in the uplink bandwidth and a length LCRBs of consecutive resource blocks allocated in the uplink bandwidth, wherein M≤LCRBs≤6, and wherein M is a positive integer greater than 1;
and
send data on resources corresponding to the starting resource block and the length LCRBs of the consecutive resource blocks.

56 more elements

A network device, comprising:

at least one processor;
and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
determine a resource allocation scheme and a resource allocation field in downlink control information, wherein when a system bandwidth is 25, 50, 75, or 100 resource blocks, the resource allocation field comprises 7 bits, 8 bits, 9 bits, or 9 bits, respectively, and wherein:
when resource allocation is determined to be performed in a first resource allocation scheme, the resource allocation field indicates, based on the first resource allocation scheme, resource allocation in an uplink bandwidth, wherein
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
⁢
⁢
bits
in
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
+
5
⁢
⁢
bits
of the resource allocation field indicate a narrowband index in the uplink bandwidth, wherein the 5 bits in the
⌈
log
2
⁢
⌊
N
RB
UL
6
⌋
⌉
+
5
⁢
⁢
bits
of the resource allocation field indicate resource allocation in a narrowband for a terminal device, wherein a length of consecutive resource blocks allocated in the narrowband is N, wherein 1≤N≤6, and wherein NRBUL indicates a quantity of resource blocks comprised in the uplink bandwidth;
when resource allocation is determined to be performed in a second resource allocation scheme, the resource allocation field indicates, based on the second resource allocation scheme, resource allocation in an uplink bandwidth, wherein the resource allocation field indicates a first resource indication value, wherein the first resource indication value indicates a starting resource block allocated to the terminal device and a length LCRBs of consecutive resource blocks allocated to the terminal device, wherein M≤LCRBs≤6, and wherein M is a positive integer greater than 1;
send the downlink control information to the terminal device;
and
receive, on resources corresponding to the starting resource block and the length LCRBs of the consecutive resource blocks, data sent by the terminal device.

55 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/172,188Filed 10 Feb 2021 · continuation
Priority: 10 Aug 2018
Published: US 2021/0167938 A13 Jun 2021
Granted: 4 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04L 5/0094
Signalling for the administration of the divided path, e.g. signalling of configuration information: indication of how sub-channels of the path…
H04L 5/26
Using time-division multiplexing: combined with the use of different frequencies
H04L 5/003
Arrangements affording multiple use of the transmission path: arrangements for allocating sub-channels of the transmission path
H04L 5/0044
Arrangements for allocating sub-channels of the transmission path: allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH

Family

PCT/CN2018/100095Parent of this continuation · filed 10 Aug 2018
US 2021/0167938 A1Pre-grant publication · published 3 Jun 2021
US 12,003,466 B2This patent

From the US filing history. Foreign family members aren’t listed.

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