Indication of Uplink Semi-Persistent Scheduling Explicit Release Using a Downlink Physical Downlink Control Channel

• US 20100202389A1
• Filed: 02/02/2010
• Published: 08/12/2010
• Est. Priority Date: 02/02/2009
• Status: Active Grant

• Current Assignee: Blackberry Limited
• Original Assignee: Blackberry Limited
• Inventors: BURBIDGE, Richard Charles, YU, Yi, CAI, Zhijun
• Granted Patent: US 8,428,020 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method is provided for acknowledging a semi-persistent scheduling (SPS) uplink resource release. The method comprises receiving an SPS resource release signal over a physical downlink control channel in a Downlink Control Information (DCI) format 1A. The signal includes an indicator that indicates that the signal pertains to at least one of an uplink resource release and a downlink resource release. The method further comprises sending an acknowledgement to confirm the release of the resource.

Claims

1. A method for acknowledging a semi-persistent scheduling (SPS) resource release, comprising:

receiving an SPS resource release signal over a physical downlink control channel in a Downlink Control Information (DCI) format 1A, the signal including an indicator that indicates that the signal pertains to at least one of an uplink resource release and a downlink resource release.

2. The method of claim 1, further comprising:

sending an acknowledgement to confirm receipt of the signal.

3. The method of claim 1, wherein the indicator is included in a data field in the signal.

4. The method of claim 3, wherein the data field is at least one of:

a Localized/Distributed Assignment Flag field; and

a TPC Command for PUCCH field.

5. The method of claim 4, wherein, when the data field is the Localized/Distributed Assignment Flag field, the indicator is set to “

0”

to indicate the downlink resource release, and the indicator is set to “

1”

to indicate the uplink resource release.

6. The method of claim 4, wherein, when the data field is the Localized/Distributed Assignment Flag field, the indicator is set to “

1”

to indicate the downlink resource release, and the indicator is set to “

0”

to indicate the uplink resource release.

7. The method of claim 4, wherein, when the data field is the TPC Command for PUCCH field, the indicator is set to “

00”

to indicate the downlink resource release, and the indicator is set to “

11”

to indicate the uplink resource release.

8. The method of claim 4, wherein, when the data field is the TPC Command for PUCCH field, the indicator is set to “

11”

to indicate the downlink resource release, and the indicator is set to “

00”

to indicate the uplink resource release.

9. The method of claim 4, wherein, when the data field is the TPC Command for the PUCCH field, the indicator indicates both downlink resource release and uplink resource release.

10. A user equipment (UE) comprising:

a processor configured to receive an SPS resource release signal over a physical downlink control channel in a Downlink Control Information (DCI) format 1A, the signal including an indicator that indicates that the signal pertains to at least one of an uplink resource release and a downlink resource release.

11. The UE of claim 10, wherein the indicator is included in a data field in the signal.

12. The UE of claim 11, wherein the data field is at least one of:

a Localized/Distributed Assignment Flag field; and

a TPC Command for PUCCH field.

13. The UE of claim 12, wherein, when the data field is the Localized/Distributed Assignment Flag field, the indicator is set to “

0”

to indicate the downlink resource release, and the indicator is set to “

1”

to indicate the uplink resource release.

14. The UE of claim 12, wherein, when the data field is the Localized/Distributed Assignment Flag field, the indicator is set to “

1”

to indicate the downlink resource release, and the indicator is set to “

0”

to indicate the uplink resource release.

15. The UE of claim 12, wherein, when the data field is the TPC Command for PUCCH field, the indicator is set to “

00”

to indicate the downlink resource release, and the indicator is set to “

11”

to indicate the uplink resource release.

16. The UE of claim 12, wherein, when the data field is the TPC Command for PUCCH field, the indicator is set to “

11”

to indicate the downlink resource release, and the indicator is set to “

00”

to indicate the uplink resource release.

17. The UE of claim 12, wherein, when the data field is the TPC Command for the PUCCH field, the indicator indicates both downlink resource release and uplink resource release.

18. The UE of claim 10, wherein the processor is further configured to send an acknowledgement confirming receipt of the signal.

19. An access device comprising:

a processor configured to transmit an uplink SPS resource release message over a physical downlink control channel in a Downlink Control Information (DCI) format 1A.

20. The access device of claim 19, wherein the message includes an indicator that indicates that the message pertains to an uplink resource release

21. The access device of claim 19, wherein the processor is further configured to receive an acknowledgement confirming receipt of the resource release message.

22. The access device of claim 20, wherein the indicator is included in a data field in the resource release message.

23. The access device of claim 22, wherein the data field is at least one of:

a Localized/Distributed Assignment Flag field; and

a TPC Command for PUCCH field.

24. The access device of claim 23, wherein, when the data field is the Localized/Distributed Assignment Flag field, the indicator is set to “

0”

to indicate a downlink resource release, and the indicator is set to “

1”

to indicate the uplink resource release.

25. The access device of claim 23, wherein, when the data field is the Localized/Distributed Assignment Flag field, the indicator is set to “

1”

to indicate a downlink resource release, and the indicator is set to “

0”

to indicate the uplink resource release.

26. The access device of claim 23, wherein, when the data field is the TPC Command for PUCCH field, the indicator is set to “

00”

to indicate a downlink resource release, and the indicator is set to “

11”

to indicate the uplink resource release.

27. The access device of claim 23, wherein, when the data field is the TPC Command for PUCCH field, the indicator is set to “

11”

to indicate a downlink resource release, and the indicator is set to “

00”

to indicate the uplink resource release.

28. The access device of claim 23, wherein, when the data field is the TPC Command for the PUCCH field, the indicator indicates both downlink resource release and uplink resource release.