Pucch Configuration Method and Apparatus

• US 20170325220A1
• Filed: 07/28/2017
• Published: 11/09/2017
• Est. Priority Date: 01/29/2015
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Li, Bingzhao, Quan, Wei, Miao, Jinhua, Yang, Xiaodong, Hu, Zhenxing, Zhang, Jian
• Granted Patent: US 10,448,376 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 52/028 switching on or off only a part of the equipment circuit blocks
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

Embodiments of the present invention provide a Physical Uplink Control Channel (PUCCH) configuration method and apparatus. A user equipment (UE) receives correspondence indication information sent by a base station. Additionally, the UE determines, according to a currently-used correspondence, a PUCCH used to send uplink feedback information of a second cell.

Claims

1. A method, comprising:

receiving, by a user equipment (UE), correspondence indication information sent by a base station, wherein the correspondence indication information indicates a currently-used correspondence, wherein the correspondence indication information comprises information about a first cell and information about a second cell corresponding to the first cell, wherein the first cell is a cell for which a physical uplink control channel (PUCCH) is already configured, and wherein uplink feedback information of the second cell is carried by the PUCCH of the first cell; and

determining, by the UE according to the currently-used correspondence, the PUCCH used to send the uplink feedback information of the second cell.

2. The method according to claim 1, wherein the correspondence indication information comprises information about a currently-used cell and a cell corresponding to the currently-used cell.

3. The method according to claim 1, wherein the method further comprises:

receiving, by the UE, a first correspondence sent by the base station and a second correspondence sent by the base station, before receiving the correspondence indication information sent by a base station, wherein the first correspondence and the second correspondence comprise the information about the first cell and information about the second cell corresponding to the first cell, wherein the correspondence indication information comprises indication information of activating the first correspondence or the second correspondence.

4. The method according to claim 3, wherein the first correspondence further comprises a first serial number, and the second correspondence further comprises a second serial number, wherein the indication information of activating the first correspondence or the second correspondence is serial number information of an activated correspondence, and wherein the method further comprises:

activating, by the UE, a correspondence corresponding to the serial number information of the activated correspondence, before determining the PUCCH used to send the uplink feedback information of the second cell.

5. The method according to claim 1, wherein the correspondence indication information comprises information about at least one deactivated cell and wherein the method further comprises:

deactivating, by the UE, a PUCCH of the at least one deactivated cell, and establishing a correspondence between a cell corresponding to the at least one deactivated cell and a cell in an active state, before determining the PUCCH used to send the uplink feedback information of the second cell.

6. The method according to claim 1, wherein the second cell corresponding to the first cell belongs to at least a first secondary timing advance group and a second timing advance group, and wherein the method further comprises:

releasing, by the UE, a sounding reference signal (SRS) resource corresponding to a cell in the first secondary timing advance group, in response to an uplink time alignment timer corresponding to the first secondary timing advance group that comprises the first cell expires; and

performing, by the UE, at least one of the following steps;

releasing, by the UE, a channel quality indicator (CQI) resource configured for the second cell corresponding to the first cell, wherein the second cell comprises a cell that belongs to the second timing advance group and a cell that belongs to the first secondary timing advance group;

releasing, by the UE, an SRS resource configured for a cell that corresponds to the first cell and that belongs to the second timing advance group, or clearing uplink authorization, downlink authorization, or a hybrid automatic repeat request (HARQ) buffer information corresponding to the second cell;

deactivating, by the UE, the second cell that corresponds to the first cell and that belongs to the second timing advance group;

stopping, by the UE, uplink transmission configured for the second cell that corresponds to the first cell and that belongs to the second timing advance group;

or

stopping, by the UE, an uplink time alignment timer of the second timing advance group, wherein cells in the second timing advance group are cells corresponding to a cell comprised in the first secondary timing advance group.

7. The method according to claim 1, further comprising:

determining, by the UE, that a trigger condition is satisfied; and

reporting power headroom (PH), wherein the trigger condition comprises;

a ratio between power headroom of any two cells among power headroom of N cells of the UE being greater than or equal to a first preset threshold, wherein N is an integer greater than or equal to 2;

power headroom of the UE being less than a second preset threshold, wherein the power headroom of the UE is obtained according to maximum transmit power of the UE, PUCCH power of a primary cell, PUCCH power of a secondary cell, physical uplink shared channel (PUSCH) power of the primary cell, or PUSCH power of the secondary cell;

or

the first cell of the UE being changed.

8. A method, comprising:

determining, by a base station, correspondence indication information, wherein the correspondence indication information indicates a currently-used correspondence of a user equipment (UE), wherein the correspondence indication information comprises information about a first cell and information about a second cell corresponding to the first cell, wherein the first cell is a cell for which a physical uplink control channel (PUCCH) is already configured, and wherein uplink feedback information of the second cell is carried by the PUCCH of the first cell corresponding to the second cell; and

sending, by the base station to the UE, the correspondence indication information.

9. The method according to claim 8, wherein the correspondence indication information comprises information about a currently-used cell and information about a cell corresponding to the currently-used cell.

10. The method according to claim 8, wherein the method further comprises:

sending, by the base station, a first correspondence and a second correspondence to the UE, before sending the correspondence indication information, wherein the first correspondence and the second correspondence comprise the information about the first cell and information about the second cell corresponding to the first cell, wherein the correspondence indication information comprises indication information of activating the first correspondence or the second correspondence.

11. A user equipment (UE), comprising:

a processor; and

a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to;

receive correspondence indication information sent by a base station, wherein the correspondence indication information indicates a currently-used correspondence, and the correspondence indication information comprises information about a first cell and information about a second cell corresponding to the first cell, wherein the first cell is a cell for which a physical uplink control channel (PUCCH) is already configured, and wherein uplink feedback information of the second cell is carried by the PUCCH of the first cell; and

determine, according to the currently-used correspondence, a PUCCH used to send the uplink feedback information of the second cell.

12. The UE according to claim 11, wherein the correspondence indication information comprises information about a currently-used cell and information about a cell corresponding to the currently-used cell.

13. The UE according to claim 11, wherein the instructions further comprise instructions to receive a first correspondence sent by the base station and a second correspondence sent by the base station, wherein the first correspondence and the second correspondence comprise the information about the first cell and the information about the second cell corresponding to the first cell, wherein the correspondence indication information comprises indication information of activating the first correspondence or the second correspondence.

14. The UE according to claim 13, wherein the first correspondence further comprises a first serial number, and the second correspondence further comprises a second serial number, wherein the indication information of activating the first correspondence or the second correspondence is serial number information of an activated correspondence, and wherein the instructions further comprise instructions to:

activate a correspondence corresponding to the serial number information of the activated correspondence.

15. The UE according to claim 11, wherein the correspondence indication information comprises information about at least one deactivated cell, and wherein the instructions further comprise instructions to:

deactivate a PUCCH of the at least one deactivated cell; and

establish a correspondence between a cell corresponding to the at least one deactivated cell and a cell in an active state.

16. The UE according to claim 11, wherein the second cell corresponding to the first cell belongs to at least a first secondary timing advance group and a second timing advance group, and wherein the instructions further comprise instructions to:

release a sounding reference signal (SRS) resource corresponding to a cell in the first secondary timing advance group, in response to expiration of an uplink time alignment timer corresponding to the first secondary timing advance group that comprises the first cell; and

perform at least one of the following steps;

releasing a channel quality indicator (CQI) resource configured for the second cell corresponding to the first cell, wherein the second cell comprises a cell that belongs to the second timing advance group and a cell that belongs to the first secondary timing advance group;

releasing an SRS resource configured for a cell that corresponds to the first cell and that belongs to the second timing advance group, or clearing uplink authorization, downlink authorization, or hybrid automatic repeat request (HARQ) buffer information corresponding to the second cell;

deactivating the second cell that corresponds to the first cell and that belongs to the second timing advance group;

stopping uplink transmission configured for the second cell that corresponds to the first cell and that belongs to the second timing advance group;

or

stopping an uplink time alignment timer of the second timing advance group, wherein cells in the second timing advance group are cells corresponding to a cell in the first secondary timing advance group.

17. The UE according to claim 11, wherein the instructions further comprise instructions to:

determine that a trigger condition is satisfied; and

report power headroom (PH), wherein the trigger condition comprises;

a ratio between power headroom of any two cells among power headroom of N cells of the UE being greater than or equal to a first preset threshold, wherein N is an integer greater than or equal to 2;

power headroom of the UE being less than a second preset threshold, wherein the power headroom of the UE is obtained according to maximum transmit power of the UE, PUCCH power of a primary cell, PUCCH power of a secondary cell, physical uplink shared channel (PUSCH) power of the primary cell, or PUSCH power of the secondary cell;

or

the first cell of the UE being changed.

18. A base station, and comprising:

a processor; and

a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to;

determine correspondence indication information, wherein the correspondence indication information indicates a currently-used correspondence of a user equipment (UE), wherein the correspondence indication information comprises information about a first cell and information about a second cell corresponding to the first cell, wherein the first cell is a cell for which a physical uplink control channel (PUCCH) is already configured, and wherein uplink feedback information of the second cell is carried by the PUCCH of the first cell corresponding to the second cell; and

send the correspondence indication information to the UE.

19. The base station according to claim 18, wherein the correspondence indication information comprises information about a currently-used first cell and information about a second cell corresponding to the currently-used first cell.

20. The base station according to claim 18, wherein the instructions further comprise instructions to:

send a first correspondence to the UE and send a second correspondence to the UE, wherein the first correspondence and the second correspondence comprise the information about the first cell and the information about the second cell corresponding to the first cell, wherein the correspondence indication information comprises indication information of activating the first correspondence or the second correspondence.