QoS request and information distribution for wireless relay networks

• US 8,483,123 B2
• Filed: 06/30/2006
• Issued: 07/09/2013
• Est. Priority Date: 06/30/2006
• Status: Expired due to Fees

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Zheng, Haihong, Saifullah, Yousuf
• Primary Examiner(s): Appiah, Charles
• Assistant Examiner(s): COSME, NATASHA W
• Application Number:
  US11/479,976
• Publication Number:
  US 20080002608A1
• Time in Patent Office: 2,566 Days
• Field of Search: 370/359.3
• US Class Current: 370/328
• CPC Class Codes: H04L 45/302 Route determination based on requested QoS
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/788 Autonomous allocation of resources
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 47/822 Collecting or measuring resource availability data
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04W 40/22 using selective relaying for reaching a BTS [Base Transceiver Station] or an access point

Abstract

Various embodiments are described relating to wireless networks, such as quality of service (QoS) request and information distribution for wireless relay networks. According to an example embodiment, a technique or method may include receiving a QoS-related message at a relay station in a wireless relay network. The QoS-related message may include one or more QoS parameters for a flow. The method or technique may also include retrieving, at the relay station, the QoS parameters from the QoS-related message to use the QoS parameters subsequently for admission control and/or scheduling for the flow. Other example embodiments are described.

Claims

1. A method comprising:

receiving, by a base station, a quality of service (QoS) request for a flow from a mobile station via one or more relay stations in a wireless relay network, the QoS request including one or more of traffic priority, maximum sustained traffic rate, maximum traffic burst, tolerated jitter, and maximum latency;

in response to receiving the QoS request, the base station sending an admission control (AC) request message to request an AC decision from the one or more relay stations;

receiving, by the base station, an AC response for the flow to either admit or reject the flow based on the QoS request from the one or more relay stations in the network along a path; and

making, by the base station, an admission control decision for the flow to either admit or reject the flow based at least in part upon the AC response(s) from the one or more relay stations,

wherein the QoS request includes a service flow identifier (SFID) to identify an associated service flow and one or more QoS parameters identifying a requested QoS for the associated service flow.

2. The method of claim 1 and further comprising sending a QoS reply to the mobile station via the one or more relay stations along the path based at least in part on the AC response(s).

23. The method of claim 1, wherein the method is performed by an IEEE 802.16 base station.

25. The method of claim 1, wherein the QoS request includes traffic priority.

26. The method of claim 1, wherein the QoS request includes maximum sustained traffic rate.

27. The method of claim 1, wherein the QoS request includes maximum traffic burst.

28. The method of claim 1, wherein the QoS request includes tolerated jitter.

29. The method of claim 1, wherein the QoS request includes maximum latency.

3. A method comprising:

receiving a QoS-related message at a relay station in a wireless relay network, the QoS-related message including one or more QoS parameters for a service flow, the QoS parameters including one or more of traffic priority, maximum sustained traffic rate, maximum traffic burst, tolerated jitter, and maximum latency;

forwarding the QoS-related message to a base station;

receiving, from a base station, a request for an admission control (AC) decision;

in response to receiving the request for the AC decision, retrieving the QoS parameters from the QoS-related message to use the QoS parameters subsequently for an admission control decision and/or scheduling for the flow;

comparing the QoS parameters against available resources to determine if sufficient resources are available to accommodate the service flow; and

sending an AC response to the base station indicating whether to admit or reject the service flow based on the comparing the QoS parameters,

wherein the QoS-related message includes a service flow identifier (SFID) to identify the service flow.

4. The method of claim 3 wherein receiving a QoS-related message comprises receiving, at the relay station, a QoS request for a flow from a mobile station.

5. The method of claim 3 and further comprising scheduling the flow, by the relay station, based on the retrieved QoS parameters.

6. A method comprising:

receiving by a base station, via one or more relay stations along a path, a QoS request for a service flow from a mobile station in a wireless network, the QoS request including one or more of traffic priority, maximum sustained traffic rate, maximum traffic burst, tolerated jitter, and maximum latency;

sending, by the base station, an admission control request for the flow to the one or more relay stations along the path;

receiving, by the base station, an admission control response for the flow from the one or more relay stations in the network, the admission control response indicating to either admit or deny the QoS request; and

making, by the base station, an admission control decision for the flow to either admit or deny the requested service flow based at least in part upon the admission control response(s) from the one or more relay stations,

wherein the QoS request includes a service flow identifier (SFID) to identify the service flow.

7. The method of claim 6 wherein the sending an admission control request comprises sending an admission control request for the flow as a unicast message directed to a relay station that is directly coupled to the mobile station, the admission control request including one or more QoS parameters for the flow.

8. The method of claim 7 and further comprising:

one or more of the relay stations along the path retrieving the QoS parameters from the admission control request;

performing local admission control for the flow by each of the one or more relay stations along the path based on the QoS parameters;

sending an admission control response to a base station based on the performing local admission control.

9. The method of claim 6 wherein the sending an admission control request comprises at least one of:

sending an admission control request for the flow as a unicast message to each of the one or more relay stations;

sending an admission control request for the flow as a unicast message to a relay station directly coupled to the mobile station;

or

sending an admission control request for the flow as a multicast message addressed to a multicast group that includes each of the one or more relay stations.

10. The method of claim 6 and further comprising sending a QoS reply to the mobile station via the one or more relay stations along the path.

11. The method of claim 6 and further comprising sending an admitted flow indication to the one or more relay stations along the path.

12. The method of claim 11 wherein the sending an admitted flow indication comprises sending an admitted flow indication for the flow as a unicast message directed to a relay station that is directly coupled to the mobile station, the admitted flow indication including one or more QoS parameters for the flow.

13. The method of claim 12 and further comprising:

one or more of the relay stations along the path retrieving the QoS parameters from the admitted flow indication;

performing scheduling for the flow by each of the one or more relay stations along the path based on the QoS parameters;

sending an admitted flow confirmation to a base station.

14. The method of claim 11 wherein the sending an admitted flow indication comprises:

sending an admitted flow indication message to the one or more relay stations along the path, one or more of the relay stations performing scheduling for the flow based at least in part upon the admitted flow indication for the flow.

15. The method of claim 11 wherein the sending an admitted flow indication message comprises at least one of:

sending an admitted flow indication message for the flow as a unicast message to each of the one or more relay stations;

sending an admitted flow indication message for the flow as a unicast message to a relay station directly coupled to the mobile station;

or

sending an admitted flow indication message for the flow as a multicast message addressed to a multicast group that includes each of the one or more relay stations.

24. The method of claim 6, wherein the method is performed by an IEEE 802.16 base station.

16. A method comprising:

receiving at a base station, via one or more relay stations along a path, a QoS request for a service flow from a mobile station in a wireless relay network, the QoS request including one or more of traffic priority, maximum sustained traffic rate, maximum traffic burst, tolerated jitter, and maximum latency;

performing, by the base station, overall admission control for the flow including either granting or rejecting the flow for the one or more relay stations along the path;

sending, from the base station, an admitted or rejected flow indication for the flow to the one or more relay stations along the path,

wherein the QoS request includes a service flow identifier (SFID) to identify the service flow and one or more QoS parameters identifying a requested QoS for the service flow.

17. The method of claim 16 wherein the performing, by the base station, overall admission control for the flow comprises performing centralized admission control for the flow for the one or one or more relay stations along the path without receiving local admission control information from the one or more of the relay stations along the path.

18. The method of claim 16 wherein the performing, by the base station, overall admission control for the flow comprises:

sending an admission control request for the flow to each of the one or more relay stations along the path;

receiving an admission control response for the flow from the one or more relay stations providing a local admission control decision for the flow, the admission control response indicating whether the one or more relay stations grants or rejects the requested flow;

performing, by the base station, admission control for the flow based on the admission control response(s).

30. The method of claim 16, wherein the performing overall admission control includes either granting or rejecting the flow for the one or more relay stations along the path based on the QoS request.

19. A method comprising:

receiving, at a relay station in a wireless relay network, an admission control request for a service flow from a base station, the admission control request including one or more QoS parameters for the flow, the QoS parameters including one or more of traffic priority, maximum sustained traffic rate, maximum traffic burst, tolerated jitter, and maximum latency;

performing, by the relay station, local admission control for the flow based on the QoS parameters for the flow; and

sending, by the relay station, an admission control response for the flow to the base station indicating to either admit or reject the requested service flow based on the performed local admission control;

receiving at the relay station an admitted flow indication for the flow from the base station,

wherein the admission control request includes a service flow identifier (SFID) to identify the service flow.

20. The method of claim 19 and further comprising sending, by the relay station, an admitted or rejected flow confirmation to the base station.

21. An apparatus for wireless communication, the apparatus comprising:

a controller;

a memory coupled to the controller; and

a wireless transceiver coupled to the controller;

the apparatus adapted to;

receive a QoS-related message at a relay station in a wireless relay network, the QoS-related message including one or more QoS parameters for a service flow, the QoS request including one or more of traffic priority, maximum sustained traffic rate, maximum traffic burst, tolerated jitter, and maximum latency;

forward the QoS-related message to a base station;

receive, from the base station, a request for an admission control (AC) decision;

in response to receiving the request for the AC decision, retrieve, at the relay station, the QoS parameters from the QoS-related message to use the QoS parameters subsequently for an admission control decision and/or scheduling for the flow,

compare the QoS parameters against available resources to determine if sufficient resources are available to accommodate the service flow; and

send an admission control message indicating whether to admit or reject the service flow based on the comparing the QoS parameters,

wherein the QoS-related message includes a service flow identifier (SFID) to identify the service flow.

22. An apparatus for wireless communication, the apparatus comprising:

a controller;

a memory coupled to the controller; and

a wireless transceiver coupled to the controller;

the apparatus adapted to;

receive, at a relay station in a wireless relay network, an admission control request for a service flow from a base station, the admission control request including one or more QoS parameters for the flow, the QoS parameters including one or more of traffic priority, maximum sustained traffic rate, maximum traffic burst, tolerated jitter, and maximum latency;

perform, by the relay station, local admission control for the flow based on the QoS parameters for the flow; and

send, by the relay station, an admission control response for the flow to the base station indicating to either grant or deny the requested service flow based on the performed local admission control; and

receive at the relay station an admitted flow indication for the flow from the base station,

wherein the admission control request includes a service flow identifier (SFID) to identify the service flow.