RESOURCE RELEASE AND DISCONTINUOUS RECEPTION MODE NOTIFICATION

• US 20090207794A1
• Filed: 02/11/2009
• Published: 08/20/2009
• Est. Priority Date: 02/13/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Meylan, Arnaud
• Granted Patent: US 8,175,050 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Abstract

Systems and methodologies are described that facilitate providing indications related to discontinuous reception (DRX) and release of semi-persistent scheduling (SPS) resources from a base station to an access terminal. A DRX indicator that provides a command to an access terminal to transition to DRX mode and a resource release indicator that identifies one or more SPS resources (e.g., uplink, downlink, . . . ) previously assigned to the access terminal that are released can be transmitted within a common transaction. According to an example, the DRX indicator and the resource release indicator can be sent via disparate channels (e.g., PDCCH and PDSCH) within a single transmission time interval (TTI). Pursuant to a further example, the DRX indicator and the resource release indicator can be transferred within a common control message.

Claims

1. A method that facilitates coordinating notifications provided to an access terminal in a wireless communication environment, comprising:

yielding a discontinuous reception (DRX) indicator that controls the access terminal to transition to DRX mode;

generating a resource release indicator that specifies release of one or more semi-persistent scheduling (SPS) resources previously assigned to the access terminal; and

transmitting the DRX indicator and the resource release indicator to the access terminal within a single transaction.

2. The method of claim 1, wherein the resource release indicator signifies that the one or more SPS resources are not released.

3. The method of claim 1, wherein the resource release indicator is one codepoint that indicates whether or not the one or more SPS resources are released.

4. The method of claim 1, wherein the one or more SPS resources include at least one uplink SPS resource.

5. The method of claim 1, wherein the one or more SPS resources include at least one downlink SPS resource.

6. The method of claim 1, wherein the single transaction occurs within one transmission time interval (TTI).

7. The method of claim 6, further comprising:

sending a control channel transmission in a first portion of the TTI, wherein the control channel transmission carries the resource release indicator and a data channel indicator that identifies presence of a corresponding data channel transmission; and

sending the corresponding data channel transmission identified by the data channel indicator during a second portion of the TTI, wherein the corresponding data channel transmission carries the DRX indicator.

8. The method of claim 7, wherein the control channel transmission is a Physical Downlink Control Channel (PDCCH) transmission and the data channel transmission is a Physical Downlink Shared Channel (PDSCH) transmission.

9. The method of claim 7, wherein the data channel transmission is at least one of a Media Access Control (MAC) Control element or a MAC DRX Control element.

10. The method of claim 1, further comprising transmitting the DRX indicator and the resource release indicator to the access terminal within a single control message.

11. The method of claim 10, wherein the single control message is at least one of a Media Access Control (MAC) Control element or a MAC DRX Control element.

12. A wireless communications apparatus, comprising:

a memory that retains instructions related to generating a discontinuous reception (DRX) indicator that controls an access terminal to transition to DRX mode, generating a resource release indicator that specifies release of one or more semi-persistent scheduling (SPS) resources previously assigned to the access terminal, and sending the DRX indicator and the resource release indicator to the access terminal within a single transaction; and

a processor, coupled to the memory, configured to execute the instructions retained in the memory.

13. The wireless communications apparatus of claim 12, wherein the one or more SPS resources include at least one uplink SPS resource.

14. The wireless communications apparatus of claim 12, wherein the one or more SPS resources include at least one downlink SPS resource.

15. The wireless communications apparatus of claim 12, wherein the single transaction occurs within one transmission time interval (TTI).

16. The wireless communications apparatus of claim 15, wherein the memory further retains instructions related to transmitting a Physical Downlink Control Channel (PDCCH) transmission in a first portion of the TTI, wherein the PDCCH transmission carries the resource release indicator and a Physical Downlink Shared Channel (PDSCH) indicator that specifies presence of a corresponding PDSCH transmission, and transmitting the corresponding PDSCH transmission specified by the PDSCH indicator during a second portion of the TTI, wherein the corresponding PDSCH transmission carries the DRX indicator.

17. The wireless communications apparatus of claim 12, wherein the memory further retains instructions related to transmitting the DRX indicator and the resource release indicator to the access terminal within a single control message.

18. A wireless communications apparatus that enables providing notifications to an access terminal concerning DRX control and SPS resource release in a wireless communication environment, comprising:

means for controlling a mode employed by the access terminal;

means for releasing one or more semi-persistent scheduling (SPS) resources previously assigned to the access terminal; and

means for sending a discontinuous reception (DRX) indicator to cause the access terminal to transition to DRX mode and a resource release indicator to notify the access terminal as to release of one or more SPS resources within a single transaction.

19. The wireless communications apparatus of claim 18, wherein the one or more SPS resources include at least one uplink SPS resource.

20. The wireless communications apparatus of claim 18, wherein the one or more SPS resources include at least one downlink SPS resource.

21. The wireless communications apparatus of claim 18, wherein the resource release indicator and the DRX indicator are transferred via disparate downlink channels within one transmission time interval (TTI).

22. The wireless communications apparatus of claim 18, wherein the DRX indicator and the resource release indicator are sent within a common control message.

23. A computer program product, comprising:

a computer-readable medium comprising;

code, stored on the medium, for controlling a mode employed by the access terminal;

code, stored on the medium, for releasing one or more semi-persistent scheduling (SPS) resources previously assigned to the access terminal; and

code, stored on the medium, for sending a discontinuous reception (DRX) indicator to cause the access terminal to transition to DRX mode and a resource release indicator to notify the access terminal as to release of one or more SPS resources within a single transaction.

24. The computer program product of claim 23, wherein the one or more SPS resources include at least one uplink SPS resource.

25. The computer program product of claim 23, wherein the one or more SPS resources include at least one downlink SPS resource.

26. The computer program product of claim 23, wherein the computer-readable medium further comprises:

code, stored on the medium, for sending a Physical Downlink Control Channel (PDCCH) transmission during a first portion of a transmission time interval (TTI), wherein the PDCCH includes the resource release indicator and a Physical Downlink Shared Channel (PDSCH) indicator that identifies presence of a corresponding PDSCH transmission; and

code, stored on the medium, for sending the corresponding PDSCH transmission identified by the PDSCH indicator during a second portion of the TTI, wherein the corresponding PDSCH transmission includes the DRX indicator.

27. The computer program product of claim 23, wherein the DRX indicator and the resource release indicator are sent within a common control message.

28. In a wireless communications system, an apparatus comprising:

a processor configured to;

yield a discontinuous reception (DRX) indicator that controls the access terminal to transition to DRX mode;

yield a resource release indicator that specifies release of one or more semi-persistent scheduling (SPS) resources previously assigned to the access terminal; and

transfer the DRX indicator and the resource release indicator to the access terminal within a single transmission time interval (TTI).

29. A method that facilitates employing indications obtained from a base station in a wireless communication environment, comprising:

receiving a discontinuous reception (DRX) indicator and a resource release indicator from a base station within a single transaction;

transitioning to DRX mode in response to the received DRX indicator; and

discontinuing utilization of one or more semi-persistent scheduling (SPS) resources identified as being released via the resource release indicator.

30. The method of claim 29, wherein the resource release indicator is one bit that indicates whether or not the one or more SPS resources are released.

31. The method of claim 29, wherein the one or more SPS resources include at least one uplink SPS resource.

32. The method of claim 29, wherein the one or more SPS resources include at least one downlink SPS resource.

33. The method of claim 29, wherein the single transaction occurs within one transmission time interval (TTI).

34. The method of claim 33, further comprising:

receiving a control channel transmission during a first portion of the TTI;

identifying the resource release indicator from the control channel transmission;

recognizing presence of a corresponding data channel transmission based upon a disparate indicator included in the control channel transmission;

receiving the corresponding data channel transmission during a second portion of the TTI; and

identifying the DRX indicator from the data channel transmission.

35. The method of claim 34, wherein the control channel transmission is a Physical Downlink Control Channel (PDCCH) transmission and the data channel transmission is a Physical Downlink Shared Channel (PDSCH) transmission.

36. The method of claim 29, further comprising receiving the DRX indicator and the resource release indicator from the base station within a single control message.

37. A wireless communications apparatus, comprising:

a memory that retains instructions related to receiving a discontinuous reception (DRX) indicator and a resource release indicator from a base station within a single transaction, transitioning to DRX mode in response to the received DRX indicator, and discontinuing utilization of one or more semi-persistent scheduling (SPS) resources identified as being released via the resource release indicator; and

a processor, coupled to the memory, configured to execute the instructions retained in the memory.

38. The wireless communications apparatus of claim 37, wherein the one or more SPS resources include at least one uplink SPS resource.

39. The wireless communications apparatus of claim 37, wherein the one or more SPS resources include at least one downlink SPS resource.

40. The wireless communications apparatus of claim 37, wherein the memory further retains instructions related to receiving a Physical Downlink Control Channel (PDCCH) transmission during a first portion of a transmission time interval (TTI), identifying the resource release indicator from the PDCCH transmission, recognizing presence of a corresponding Physical Downlink Shared Channel (PDSCH) transmission based upon a disparate indicator included in the PDCCH transmission, receiving the corresponding PDSCH transmission during a second portion of the TTI, and identifying the DRX indicator from the PDSCH transmission.

41. The wireless communications apparatus of claim 37, wherein the DRX indicator and the resource release indicator are received within a single control message.

42. A wireless communications apparatus that enables employing indicators obtained from a base station in a wireless communication environment, comprising:

means for obtaining a discontinuous reception (DRX) indicator and a resource release indicator from a base station within a single transaction;

means for switching to DRX mode in response to the obtained DRX indicator; and

means for halting employment of one or more semi-persistent scheduling (SPS) resources specified by the resource release indicator as being released.

43. The wireless communications apparatus of claim 42, wherein the DRX indicator and the resource release indicator are obtained via disparate downlink channels within one transmission time interval (TTI).

44. The wireless communications apparatus of claim 42, wherein the DRX indicator and the resource release indicator are obtained by way of a common control message.

45. A computer program product, comprising:

a computer-readable medium comprising;

code, stored on the medium, for obtaining a discontinuous reception (DRX) indicator and a resource release indicator from a base station within a single transaction;

code, stored on the medium, for switching to DRX mode in response to the obtained DRX indicator; and

code, stored on the medium, for halting employment of one or more semi-persistent scheduling (SPS) resources specified by the resource release indicator as being released.

46. The computer program product of claim 45, wherein the DRX indicator and the resource release indicator are obtained via disparate downlink channels within one transmission time interval (TTI).

47. The computer program product of claim 45, wherein the DRX indicator and the resource release indicator are obtained within a common control message.

48. In a wireless communications system, an apparatus comprising:

a processor configured to;

receive a discontinuous reception (DRX) indicator and a resource release indicator from a base station within a single transmission time interval (TTI);

transition to DRX mode in response to the received DRX indicator; and

discontinue utilization of one or more semi-persistent scheduling (SPS) resources identified as being released via the resource release indicator.