Control information sending/receiving method and device

Patent metadata

Field	Value
Publication number	US-11129087-B2
Application number	US-202016750938-A
Country	US
Kind code	B2
Filing date	Jan 23, 2020
Priority date	Aug 11, 2017
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

A control information sending/receiving method and device are provided, to implement indicating a time-frequency location of a control channel to a terminal device in a 5G NR system or a future evolved LTE system. The method includes: receiving, by a terminal device, broadcast information; determining, from at least two predefined time-domain locations, a time-domain location of a broadcast channel carrying the broadcast information; determining a time-domain location of a control channel based on the time-domain location of the broadcast channel; and performing control channel detection in the determined time-domain location of the control channel.

First claim

What is claimed is:

1. A method comprising:
sending, by an apparatus, broadcast information in a broadcast channel, wherein the broadcast channel is located in a synchronization signal block;
determining, by the apparatus, a time-domain location of a control channel based on a time-domain location of the synchronization signal block, wherein the time-domain location of the synchronization signal block is one of at least two predefined time-domain locations; and
sending, by the apparatus, to a terminal device, the control channel in the time-domain location of the control channel.

2. The method according to claim 1 , wherein determining the time-domain location of the control channel includes determining the time-domain location of a control channel based on the time-domain location of the synchronization signal block, and an association between the time-domain location of the synchronization signal block and the time-domain location of the control channel.

3. The method according to claim 1 , wherein a subcarrier width of the broadcast channel is 30 kHz, a subcarrier width of the control channel is 30 kHz, and a time-domain resource set of control channels comprises a symbol with a number 0 and a symbol with a number 1, and wherein determining the time-domain location of the control channel includes:
determining that the time-domain location of the control channel is a symbol with a number 0 in response to the time-domain location of the synchronization signal block being symbols with numbers 2 to 5; or
determining that the time-domain location of the control channel is a symbol with a number 1 in response to the time-domain location of the synchronization signal block being symbols with numbers 6 to 9.

4. The method according to claim 1 , wherein a subcarrier width of the broadcast channel is 30 kHz, a subcarrier width of the control channel is 30 kHz, and a time-domain resource set of control channels comprises symbols with numbers 0 to 1 and symbols with numbers 2 to 3, wherein determining the time-domain location of the control channel includes:
determining that the time-domain location of the control channel is symbols with numbers 0 to 1 in response to the time-domain location of the synchronization signal block being symbols with numbers 4 to 7; or
determining that the time-domain location of the control channel is symbols with numbers 2 to 3 in response to the time-domain location of the synchronization signal block being symbols with numbers 8 to 11.

5. The method according to claim 1 , wherein the broadcast information indicates a time-domain resource set of control channels, and wherein determining the time-domain location of the control channel includes determining the time-domain location of the control channel from a time-domain resource set of control channels.

6. The method according to claim 1 , wherein a subcarrier width of the broadcast channel is 15 kHz, and a subcarrier width of the control channel is 15 kHz, wherein determining the time-domain location of the control channel includes:
determining that the time-domain location of the control channel is symbols with numbers 0 to 1 in response to the time-domain location of the synchronization signal block being symbols with numbers 2 to 5.

7. The method according to claim 1 , wherein a subcarrier width of the broadcast is 15 kHz, and a subcarrier width used by the control channel is 15 kHz, wherein determining the time-domain location of the control channel includes:
determining that the time-domain location of the control channel is a symbol with a number 0 in response to the time-domain location of the synchronization signal block being symbols with numbers 2 to 5.

8. An apparatus comprising:
a storage medium including executable instructions; and
a processor;
wherein the executable instructions, when executed by the processor, cause the apparatus to:
send broadcast information in a broadcast channel, wherein the broadcast channel is located in a synchronization signal block;
determine a time-domain location of a control channel based on a time-domain location of the synchronization signal block, wherein the time-domain location of the synchronization signal block is one of at least two predefined time-domain locations; and
send, to a terminal device, the control channel in the time-domain location of the control channel.

9. The apparatus according to claim 8 , wherein determining the time-domain location of the control channel includes determining the time-domain location of a control channel based on the time-domain location of the synchronization signal block, and an association between the time-domain location of the synchronization signal block and the time-domain location of the control channel.

10. The apparatus according to claim 8 , wherein a subcarrier width of the broadcast channel is 30 kHz, a subcarrier width of the control channel is 30 kHz, and a time-domain resource set of control channels comprises a symbol with a number 0 and a symbol with a number 1, wherein determining the time-domain location of the control channel includes:
determining that the time-domain location of the control channel is a symbol with a number 0 in response to the time-domain location of the synchronization signal block being symbols with numbers 2 to 5; or
determining that the time-domain location of the control channel is a symbol with a number 1 in response to the time-domain location of the synchronization signal block being symbols with numbers 6 to 9.

11. The apparatus according to claim 8 , wherein a subcarrier width of the broadcast channel is 30 kHz, a subcarrier width of the control channel is 30 kHz, and a time-domain resource set of control channels comprises symbols with numbers 0 to 1 and symbols with numbers 2 to 3, wherein determining the time-domain location of the control channel includes:
determining that the time-domain location of the control channel is symbols with numbers 0 to 1 in response to the time-domain location of the synchronization signal block being symbols with numbers 4 to 7; or
determining that the time-domain location of the control channel is symbols with the numbers 2 to 3 in response to the time-domain location of the synchronization signal block being symbols with numbers 8 to 11.

12. The apparatus according to claim 8 , wherein a subcarrier width of the broadcast channel is 15 kHz, and a subcarrier width of the control channel is 15 kHz, wherein determining the time-domain location of the control channel includes:
determining that the time-domain location of the control channel is symbols with numbers 0 to 1 in response to the time-domain location of the synchronization signal block being symbols with numbers 2 to 5.

13. The apparatus according to claim 8 , wherein a subcarrier width of the broadcast is 15 kHz, and a subcarrier width used by the control channel is 15 kHz, wherein determining the time-domain location of the control channel includes:
determining that the time-domain location of the control channel is a symbol with a number 0 in response to the time-domain location of the synchronization signal block being symbols with numbers 2 to 5.

14. The apparatus according to claim 8 , wherein the broadcast information indicates a time-domain resource set of control channels, and wherein determining the time-domain location of the control channel includes:
determining the time-domain location of the control channel from the time-domain resource set of control channels.

15. A non-transitory computer-readable storage medium comprising executable instructions, wherein the executable instru

Assignees

• Huawei Tech Co Ltd

Inventors

• Xue Lixia
• Zhang Xu
• Wang Jianguo
• Qin Yi
• Cao Yongzhao

Classifications

• H04W72/30

  Resource management for broadcast services · CPC title

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04L47/806

  Broadcast or multicast traffic · CPC title

• H04B17/382

  for resource allocation, admission control or handover · CPC title