Method and apparatus for early termination of an RX chain

• US 9,258,781 B2
• Filed: 08/23/2013
• Issued: 02/09/2016
• Est. Priority Date: 12/03/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Matin, Sharif Ahsanul, Chizgi, Nate, Salvekar, Atul Arvind, Xing, Jun
• Primary Examiner(s): Patel, Parth
• Assistant Examiner(s): CHANG, KAI J
• Application Number:
  US13/974,952
• Publication Number:
  US 20140153462A1
• Time in Patent Office: 900 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 52/02 Power saving arrangements in wired systems H04L12/12; signaling of mobile application services, e.g. low battery notifications H04W4/20
• CPC Class Codes: H04W 52/0238 where the received signal is an unwanted signal, e.g. interference or idle signal
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/221 using past power control commands
• CPC Class Codes: H04W 52/44 in connection with interruption of transmission
• CPC Class Codes: H04W 52/58 Format of the TPC bits
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Methods and apparatus for wireless communication for improving the call performance and power consumption during the connection state of a user equipment (UE). Aspects of the methods and apparatus relate to receiving a transmit power control (TPC) command from a network entity and decoding every TPC slot of the TPC command. Aspects of the methods and apparatus include ceasing the decoding of a TPC slot set when the current decoded symbol of the TPC slot is in disagreement with the previous decoded symbol of the TPC slot. The receiver of the UE is then deactivated until the end of the TPC slot set.

Claims

1. A method of wireless communication, comprising:

receiving a transmit power control (TPC) command from a network entity at a user equipment (UE), wherein the TPC command is divided into one or more TPC slot sets of TPC slots;

decoding a TPC slot of a TPC slot set of the one or more sets of TPC slots resulting in a decoded symbol for the TPC slot of the TPC slot set;

omitting the decoding of a number of TPC slots in each of the one or more TPC slot sets;

determining whether the decoded symbol of the TPC slot is in disagreement with a previous decoded symbol in the TPC slot set;

ceasing the decoding of the TPC slot set based on determining that the decoded symbol of the TPC slot is in disagreement with the previous decoded symbol of the TPC slot set; and

deactivating a receiver of the UE until an end of the TPC slot set based on ceasing the decoding of the TPC slot set.

2. The method of claim 1, further comprising:

reactivating the receiver of the UE after the TPC slot set to receive one or more additional TPC slot sets or TPC commands.

3. The method of claim 1, wherein the one or more TPC slot sets comprise three TPC slot sets each having five TPC slots within a radio frame.

4. The method of claim 1, wherein the received TPC command is a voice only call.

5. The method of claim 1, wherein the received TPC command is a packet switched call, or a circuit switched call.

6. The method of claim 1, wherein the received TPC command is a multiple radio access bearer (MRAB) call.

7. The method of claim 1, wherein the decoded symbol of the TPC slot is either a UP command or a DOWN command.

8. The method of claim 1, wherein the omitting the decoding of a number of TPC slots in each of the one or more TPC slot sets comprises omitting the first three TPC slots of each of the one or more TPC slot sets.

9. The method of claim 1, wherein transmission power changes based on the last two TPC slots of each of the one or more TPC slot sets.

10. An apparatus of wireless communication, comprising:

at least one processor; and

a memory coupled to the at least one processor, wherein the at least one processor is configured to;

receive a transmit power control (TPC) command from a network entity at a user equipment (UE), wherein the TPC command is divided into one or more TPC slot sets of TPC slots;

decode a TPC slot of a TPC slot set of the one or more sets of TPC slots resulting in a decoded symbol for the TPC slot of the TPC slot set;

omit the decoding of a number of TPC slots in each of the one or more TPC slot sets;

determine whether the decoded symbol of the TPC slot is in disagreement with a previous decoded symbol in the TPC slot set;

cease the decoding of the TPC slot set based on determining that the decoded symbol of the TPC slot is in disagreement with the previous decoded symbol of the TPC slot set; and

deactivate a receiver of the UE until an end of the TPC slot set based on ceasing the decoding of the TPC slot set.

11. The apparatus of claim 10, wherein the at least one processor is further configured to:

reactivate the receiver of the UE after the TPC slot set to receive one or more additional TPC slot sets or TPC commands.

12. The apparatus of claim 10, wherein the one or more TPC slot sets comprise three TPC slot sets each having five TPC slots within a radio frame.

13. The apparatus of claim 10, wherein the received TPC command is a voice only call.

14. The apparatus of claim 10, wherein the received TPC command is a packet switched call, or a circuit switched call.

15. The apparatus of claim 10, wherein the received TPC command is a multiple radio access bearer (MRAB) call.

16. The apparatus of claim 10, wherein the decoded symbol of the TPC slot is either a UP command or a DOWN command.

17. The apparatus of claim 10, wherein the at least one processor configured to omit the decoding of a number of TPC slots in each of the one or more TPC slot sets is further configured to omit the first three TPC slots of each of the one or more TPC slot sets.

18. The apparatus of claim 10, wherein transmission power changes based on the last two TPC slots of each of the one or more TPC slot sets.

19. An apparatus of wireless communication, comprising:

means for receiving a transmit power control (TPC) command from a network entity at a user equipment (UE), wherein the TPC command is divided into one or more TPC slot sets of TPC slots;

means for decoding a TPC slot of a TPC slot set of the one or more sets of TPC slots resulting in a decoded symbol for the TPC slot of the TPC slot set;

means for omitting the decoding of a number of TPC slots in each of the one or more TPC slot sets;

means for determining whether the decoded symbol of the TPC slot is in disagreement with a previous decoded symbol in the TPC slot set;

means for ceasing the decoding of the TPC slot set based on determining that the decoded symbol of the TPC slot is in disagreement with the previous decoded symbol of the TPC slot set; and

means for deactivating a receiver of the UE until an end of the TPC slot set based on ceasing the decoding of the TPC slot set.

20. A non-transitory computer readable medium, comprising code for:

receiving a transmit power control (TPC) command from a network entity at a user equipment (UE), wherein the TPC command is divided into one or more TPC slot sets of TPC slots;

decoding a TPC slot of a TPC slot set of the one or more sets of TPC slots resulting in a decoded symbol for the TPC slot of the TPC slot set;

omitting the decoding of a number of TPC slots in each of the one or more TPC slot sets;

determining whether the decoded symbol of the TPC slot is in disagreement with a previous decoded symbol in the TPC slot set;

ceasing the decoding of the TPC slot set based on determining that the decoded symbol of the TPC slot is in disagreement with the previous decoded symbol in of TPC slot set; and

deactivating a receiver of the UE until an end of the TPC slot set based on ceasing the decoding of the TPC slot set.