METHOD AND APPARATUS FOR SEMI-PERSISTENT SCHEDULING ACTIVATION DETECTION

• US 20110239072A1
• Filed: 03/26/2010
• Published: 09/29/2011
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: Blackberry Limited
• Original Assignee: Blackberry Limited
• Inventors: Cai, Zhijun
• Granted Patent: US 8,423,856 B2
• Time in Patent Office: Days
• US Class Current: 714/748
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method for activating a semi-persistent scheduled (SPS) resource using a user agent (UA) is presented. A downlink (DL) communication may be received by a UA using a physical downlink control channel (PDCCH). The DL communication may include a control message. When the control message is associated with an SPS Cell-Radio Network Terminal Identifier (C-RNTI) of the UA, the method may include retrieving a value of a New Data Indicator (NDI) field. When the value of the NDI field is equal to 0, the method may include inspecting the control message to determine whether the control message indicates an SPS activation. When the control message indicates an SPS activation, the method may include activating an SPS resource identified by the control message.

Claims

1. A method for activating a semi-persistent scheduled (SPS) resource using a user agent (UA), comprising:

receiving a downlink (DL) communication using a physical downlink control channel (PDCCH), the DL communication including a control message;

when the control message is associated with an SPS Cell-Radio Network Terminal Identifier (C-RNTI) of the UA, retrieving a value of a New Data Indicator (NDI) field;

when the value of the NDI field is equal to 0, inspecting the control message to determine whether the control message indicates an SPS activation; and

when the control message indicates an SPS activation, activating an SPS resource identified by the control message.

2. The method of claim 1, including, when the control message indicates an SPS activation including a downlink (DL) assignment, storing the DL assignment and associated Hybrid Automatic Repeat reQuest (HARQ) information as a configured DL assignment.

3. The method of claim 1, including, when the control message indicates an SPS activation including an uplink (UL) assignment, storing the UL assignment and associated Hybrid Automatic Repeat reQuest (HARQ) information as a configured UL grant.

4. The method of claim 1, including using the SPS C-RNTI to decode the control message from at least a portion of the DL communication.

5. The method of claim 4, including:

identifying a cyclic redundancy check (CRC) value of the control message; and

confirming that the CRC is accurate.

6. A method for activating a semi-persistent scheduled (SPS) resource using a user agent (UA), comprising:

receiving a control message;

when the control message is associated with a semi-persistent scheduling identifier of the UA, inspecting the control message to determine whether the control message indicates an SPS activation; and

when the control message indicates an SPS activation, activating an SPS resource identified by the control message.

7. The method of claim 6, including, when the control message indicates an SPS activation including a downlink (DL) assignment, storing the DL assignment and associated Hybrid Automatic Repeat reQuest (HARQ) information as a configured DL assignment.

8. The method of claim 6, including, when the control message indicates an SPS activation including an uplink (UL) assignment, storing the UL assignment and associated Hybrid Automatic Repeat reQuest (HARQ) information as a configured UL grant.

9. The method of claim 6, including using an SPS Cell-Radio Network Terminal Identifier (C-RNTI) to decode the control message.

10. The method of claim 9, including:

identifying a cyclic redundancy check (CRC) value of the control message; and

confirming that the CRC is accurate.

11. A user agent (UA) for activating a semi-persistent scheduled (SPS) resource, comprising:

a processor configured to perform the steps of;

receiving a downlink (DL) communication using a physical downlink control channel (PDCCH), the DL communication including a control message;

when the control message is associated with an SPS Cell-Radio Network Terminal Identifier (C-RNTI) of the UA, retrieving a value of a New Data Indicator (NDI) field;

when the value of the NDI field is equal to 0, inspecting the control message to determine whether the control message indicates an SPS activation; and

when the control message indicates an SPS activation, activating an SPS resource identified by the control message.

12. The UA of claim 11, wherein the processor is further configured to perform the step of, when the control message indicates an SPS activation including a downlink (DL) assignment, storing the DL assignment and associated Hybrid Automatic Repeat reQuest (HARQ) information as a configured DL assignment.

13. The UA of claim 11, wherein the processor is further configured to perform the step of, when the control message indicates an SPS activation including an uplink (UL) assignment, storing the UL assignment and associated Hybrid Automatic Repeat reQuest (HARQ) information as a configured UL grant.

14. The UA of claim 11, wherein the processor is further configured to perform the step of using the SPS C-RNTI to decode the control message from at least a portion of the DL communication.

15. The UA of claim 14, wherein the processor is further configured to perform the steps of:

identifying a cyclic redundancy check (CRC) value of the control message; and

confirming that the CRC is accurate.

16. A user agent (UA) for activating a semi-persistent scheduled (SPS) resource, comprising:

a processor configured to perform the steps of;

receiving a control message;

when the control message is associated with a semi-persistent scheduling identifier of the UA, inspecting the control message to determine whether the control message indicates an SPS activation; and

when the control message indicates an SPS activation, activating an SPS resource identified by the control message.

17. The UA of claim 16, wherein the processor is further configured to perform the step of, when the control message indicates an SPS activation including a downlink (DL) assignment, storing the DL assignment and associated Hybrid Automatic Repeat reQuest (HARQ) information as a configured DL assignment.

18. The UA of claim 16, wherein the processor is further configured to perform the step of, when the control message indicates an SPS activation including an uplink (UL) assignment, storing the UL assignment and associated Hybrid Automatic Repeat reQuest (HARQ) information as a configured UL grant.

19. The UA of claim 16, wherein the processor is further configured to perform the step of using an SPS Cell-Radio Network Terminal Identifier (C-RNTI) to decode the control message.

20. The UA of claim 19, wherein the processor is further configured to perform the steps of:

identifying a cyclic redundancy check (CRC) value of the control message; and

confirming that the CRC is accurate.