Uplink scheduling and resource allocation with fast indication

• US 8,204,508 B2
• Filed: 09/26/2011
• Issued: 06/19/2012
• Est. Priority Date: 04/27/2007
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Cai, Zhijun, Womack, James Earl, Suzuki, Takashi
• Primary Examiner(s): MIZRAHI, DIANE D
• Application Number:
  US13/244,714
• Publication Number:
  US 20120014341A1
• Time in Patent Office: 267 Days
• Field of Search: 455/452.1, 455/452.2, 370/328
• US Class Current: 455/452.1
• CPC Class Codes: H04L 1/0031 Multiple signaling transmission H04L1/1664, F15 take precedence
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 72/1263 Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Abstract

Systems and methods for signalling transitions between talk-spurt state and silence state for wireless terminals having semi-persistently allocated uplink resources are employed. A layer 1/2 indication of the state transitions may be transmitted using a resource that is specifically allocated for that purpose. Alternatively, ACK/NACK signalling may be employed. Layer 1 indications may be employed for both state transition types. Alternatively, in-band MAC layer signalling may be used to signal state transition from talk-spurt state to silence, or the network may deduce this state transition on its own. A different uplink wireless transition resource is allocated for the talk-spurt state vs. the silence state.

Claims

1. A method in a wireless terminal in a Long Term Evolution (LTE) system, comprising:

sending, by the wireless terminal, a layer 1 indication using a first uplink transmission resource to request a second uplink transmission resource;

wherein the layer 1 indication is an ACK/NACK transmission.

2. The method of claim 1, further comprising resending a request for the second uplink transmission resource.

3. The method of claim 1, further comprising resending a request for the second uplink transmission resource using the first uplink transmission resource.

4. The method of claim 3, further comprising releasing the first uplink transmission resource after resending the request for the second uplink transmission resource.

5. The method of claim 1, further comprising:

sending the ACK/NACK transmission over a Scheduling Request (SR) resource.

6. The method of claim 1, wherein the layer 1 indication indicates an ACK/NACK and a Scheduling Request.

7. The method of claim 6, wherein the Scheduling Request is a State Transition indication.

8. The method of claim 5, wherein transmitting a “

1”

indicates a NACK and a Scheduling Request.

9. The method of claim 5, wherein transmitting a “

−

1”

indicates an ACK and a Scheduling Request.

10. The method of claim 5, wherein transmitting a positive value indicates a NACK and a Scheduling Request.

11. The method of claim 5, wherein transmitting a negative value indicates an ACK and a Scheduling Request.

12. The method of claim 1, wherein the layer 1 indication is a single bit indication.

13. A method in a wireless terminal in a Long Term Evolution (LTE) system, comprising:

receiving, by the wireless terminal, a configuration of a first uplink transmission resource; and

sending, by the wireless terminal, a layer 1 indication according to the received configuration,

wherein the layer 1 indication is an ACK/NACK transmission that also indicates a Scheduling Request.

14. The method of claim 13, wherein the layer 1 indication is an ACK/NACK transmission transmitted over a Scheduling Request resource.

15. The method of claim 13, wherein the Scheduling Request is a State Transition indication.

16. A method in a wireless terminal in a Long Term Evolution (LTE) system, comprising:

receiving, by the wireless terminal, a configuration of a first uplink transmission resource; and

sending, by the wireless terminal, a layer 1 indication using the first uplink transmission resource;

wherein the layer 1 indication is an ACK/NACK transmission that also indicates a Scheduling Request.

17. The method of claim 16, wherein the layer 1 indication includes a positive value to indicate a Scheduling Request and a NACK.

18. The method of claim 16, wherein the layer 1 indication includes a negative value to indicate a Scheduling Request and an ACK.

19. A method on a network element comprising:

receiving, by the network element, a layer 1 indication on a first uplink transmission resource, the layer 1 indication requesting a second uplink transmission resource;

wherein the layer 1 indication is an ACK/NACK transmission.

20. The method of claim 19, wherein the first uplink transmission resource is a Scheduling Request resource.

21. The method of claim 19, wherein the received layer 1 indication indicates both a Scheduling Request and an ACK/NACK.

22. The method of claim 21, wherein the Scheduling Request is a State Transition indication.

23. The method of claim 19, wherein receiving a negative value indicates a Scheduling Request and an ACK.

24. The method of claim 19, wherein receiving a positive value indicates a Scheduling Request and a NACK.

25. The method of claim 19, wherein receiving a “

1”

indicates a NACK and a Scheduling Request.

26. The method of claim 19, wherein receiving a “

−

1”

indicates an ACK and a Scheduling Request.

27. The method of claim 19, wherein the layer 1 indication is a single bit indication.

28. The method of claim 19, wherein the network element is an eNB.