Method and apparatus for carrier identity determination in multi-carrier communication systems

• US 8,427,967 B2
• Filed: 04/23/2008
• Issued: 04/23/2013
• Est. Priority Date: 04/15/2008
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Stamoulis, Anastasios, Gupta, Rajarshi, Horn, Gavin Bernard
• Primary Examiner(s): Harper, Kevin C
• Assistant Examiner(s): MURPHY, RHONDA L
• Application Number:
  US12/108,405
• Publication Number:
  US 20090257358A1
• Time in Patent Office: 1,826 Days
• Field of Search: None
• US Class Current: 370/252
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/563 of the wireless resources

Abstract

Systems and methods are described that facilitate the determination and request of resources a node may wish to reserve. The resources include a plurality of carriers that are shared with other nodes. In an approach, the node determines a condition related to the plurality of carriers; creates an ordering of the plurality of resources; and transmits a resource utilization message (RUM) for one or more of the plurality of resources based on the ordering and the condition.

Claims

1. A method of wireless data communication comprising:

determining a condition related to a plurality of carriers that are shared by nodes in a communication system;

creating an ordering of the plurality of resources; and

transmitting a resource utilization message (RUM) for at least one of the plurality of carriers based on the ordering and the condition,

wherein the RUM indicates that one of the nodes desires to block at least one other node from transmitting on the at least one of the plurality of carriers, and

wherein the RUM includes a weight that indicates a degree to which the respective node is disadvantaged based on an actual level of performance achieved at the respective node and a target level of performance at the respective node.

2. The method of claim 1, wherein the condition comprises at least one of a level of interference over thermal noise (IOT), a carrier-to-interference ratio (C/I), and a level of spectral efficiency for the plurality of carriers.

3. The method of claim 1, wherein the condition

comprises a quality of service (QoS) requirement for the plurality of carriers, wherein the QoS requirement comprises at least one of a data rate, an amount of data to transmit, a level of latency, and a traffic class.

4. The method of claim 1, wherein the determination comprises:

receiving a signal, and

deriving the condition from the signal.

5. The method of claim 4, wherein the signal comprises an indication of a preferred ordering of the plurality of carriers.

6. The method of claim 4, wherein the signal comprises an indication of at least one of a level of interference over thermal noise (IOT), a carrier-to-interference ratio (C/I), a level of spectral efficiency, and one or more received RUMs for the plurality of carriers determined at an associated node.

7. The method of claim 1, wherein the ordering satisfies a predetermined partitioning scheme.

8. The method of claim 7, wherein the predetermined partitioning scheme specifies a predetermined set of carriers for which to transmit an RUM according to a type of traffic.

9. The method of claim 1, wherein the ordering is based on a pseudo-random sequence.

10. The method of claim 1, wherein the ordering is based on a result of previous RUMs transmitted for the plurality of carriers.

11. The method of claim 10, wherein the result of previous RUMs transmitted comprises at least one of a number of successful transmissions, a number of unsuccessful transmissions, a number of previously transmitted RUMs, and a number of RUMs previously transmitted for the plurality of carriers by other nodes.

12. The method of claim 1, wherein the weight is based on an actual throughput achieved at the respective node and a target throughput at the respective node.

13. The method of claim 1, wherein the weight is based on a ratio of the actual level of performance achieved at the respective node and the target level of performance at the respective node.

14. An apparatus for wireless data communication comprising:

means for determining a condition related to a plurality of carriers that are shared by the apparatus and nodes in a communication system;

means for creating an ordering of the plurality of carriers; and

means for transmitting a resource utilization message (RUM) for at least one of the plurality of carriers based on the ordering and the condition,

wherein the RUM indicates that the apparatus desires to block at least one of the nodes from transmitting on the at least one of the plurality of carriers, and

wherein the RUM includes a weight that indicates a degree to which the apparatus is disadvantaged based on an actual level of performance achieved at the apparatus and a target level of performance at the apparatus.

15. The apparatus of claim 14, wherein the condition comprises at least one of a level of interference over thermal noise (IOT), a carrier-to-interference ratio (C/I), and a level of spectral efficiency for the plurality of carriers.

16. The apparatus of claim 14, wherein the condition comprises a quality of service (QoS) requirement for the plurality of carriers, wherein the QoS requirement comprises at least one of a data rate, an amount of data to transmit, a level of latency, and a traffic class.

17. The apparatus of claim 14, wherein the determination means comprises:

means for receiving a signal, and

means for deriving the condition from the signal.

18. The apparatus of claim 17, wherein the signal comprises an indication of a preferred ordering of the plurality of carriers.

19. The apparatus of claim 17, wherein the signal comprises an indication of at least one of a level of interference over thermal noise (IOT), a carrier-to-interference ratio (C/I), a level of spectral efficiency, and one or more received RUMs for the plurality of carriers determined at an associated node.

20. The apparatus of claim 14, wherein the ordering satisfies a predetermined partitioning scheme.

21. The apparatus of claim 20, wherein the predetermined partitioning scheme specifies a predetermined set of carriers for which to transmit an RUM according to a type of traffic.

22. The apparatus of claim 14, wherein the ordering is based on a pseudo-random sequence.

23. The apparatus of claim 14, wherein the ordering is based on a result of previous RUMs transmitted for the plurality of carriers.

24. The apparatus of claim 23, wherein the result of previous RUMs transmitted comprises at least one of a number of successful transmissions, a number of unsuccessful transmissions, a number of previously transmitted RUMs, and a number of RUMs previously transmitted for the plurality of carriers by other nodes.

25. An access point comprising:

an antenna; and

,

a processing system coupled to the antenna and configured to;

determine a condition related to a plurality of carriers via the antenna, wherein the carriers are shared by the access point and nodes in a communication system;

create an ordering of the plurality of carriers; and

transmit a resource utilization message (RUM) for at least one of the plurality of carriers based on the ordering and the condition,

wherein the RUM indicates that the access point desires to block at least one of the nodes from transmitting on the at least one of the plurality of carriers, and

wherein the RUM includes a weight that indicates a degree to which the access point is disadvantaged based on an actual level of performance achieved at the access point and a target level of performance at the access point.

26. An access terminal comprising:

a transducer; and

,

a processing system coupled to the transducer and configured to;

determine a condition related to a plurality of carriers usable to communicate data with the transducer, wherein the carriers are shared by the access terminal and nodes in a communication system;

create an ordering of the plurality of carriers; and

transmit a resource utilization message (RUM) for at least one of the plurality of carriers based on the ordering and the condition,

wherein the RUM indicates that the access terminal desires to block at least one of the nodes from transmitting on the at least one of the plurality of carriers, and

wherein the RUM includes a weight that indicates a degree to which the access terminal is disadvantaged based on an actual level of performance achieved at the access terminal and a target level of performance at the access terminal.

27. A computer program product for wireless data communication comprising:

a non-transitory computer readable storage medium comprising codes executable to;

determine a condition related to a plurality of carriers that are shared by nodes in a communication system;

create an ordering of the plurality of carriers; and

transmit a resource utilization message (RUM) for at least one of the plurality of carriers based on the ordering and the condition,

wherein the RUM indicates that one of the nodes desires to block at least one other node from transmitting on the at least one of the plurality of carriers, and

wherein the RUM includes a weight that indicates a degree to which the respective node is disadvantaged based on an actual level of performance at the respective node and a target level of performance at the respective node.

28. An apparatus for wireless data communication comprising:

a processing system configured to;

determine a condition related to a plurality of carriers that are shared by the apparatus and nodes in a communication system;

create an ordering of the plurality of carriers; and

transmit a resource utilization message (RUM) for at least one of the plurality of carriers based on the ordering and the condition,

wherein the RUM indicates that the apparatus desires to block at least one of the nodes from transmitting on the at least one of the plurality of carriers, and

wherein the RUM includes a weight that indicates a degree to which the apparatus is disadvantaged based on an actual level of performance achieved at the apparatus and a target level of performance at the apparatus.

29. The apparatus of claim 28, wherein the condition comprises at least one of a level of interference over thermal noise (IOT), a carrier-to-interference ratio (C/I), and a level of spectral efficiency for the plurality of carriers.

30. The apparatus of claim 28, wherein the condition comprises a quality of service (QoS) requirement for the plurality of carriers, wherein the QoS requirement comprises at least one of a data rate, an amount of data to transmit, a level of latency, and a traffic class.

31. The apparatus of claim 28, wherein the processing system is further configured to:

receive a signal, and

derive the condition from the signal.

32. The apparatus of claim 31, wherein the signal comprises an indication of a preferred ordering of the plurality of carriers.

33. The apparatus of claim 31, wherein the signal comprises an indication of at least one of a level of interference over thermal noise (IOT), a carrier-to-interference ratio (C/I), a level of spectral efficiency, and one or more received RUMs for the plurality of carriers determined at an associated node.

34. The apparatus of claim 28, wherein the ordering satisfies a predetermined partitioning scheme.

35. The apparatus of claim 34, wherein the predetermined partitioning scheme specifies a predetermined set of carriers for which to transmit an RUM according to a type of traffic.

36. The apparatus of claim 28, wherein the ordering is based on a pseudo-random sequence.

37. The apparatus of claim 28, wherein the ordering is based on a result of previous RUMs transmitted for the plurality of carriers.

38. The apparatus of claim 37, wherein the result of previous RUMs transmitted comprises at least one of a number of successful transmissions, a number of unsuccessful transmissions, a number of previously transmitted RUMs, and a number of RUMs previously transmitted for the plurality of carriers by other nodes.