Optimization method of multiple service flows operation for WiMAX system

• US 8,254,334 B2
• Filed: 11/21/2008
• Issued: 08/28/2012
• Est. Priority Date: 11/23/2007
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Chu, Li, Song, Jianquan, Xu, Ling
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): LIU, JUNG
• Application Number:
  US12/744,307
• Publication Number:
  US 20100284369A1
• Time in Patent Office: 1,376 Days
• Field of Search: 370/203, 370204-215, 370229-240, 370310-337, 370338-350, 370351-394, 370/395.1, 370/395.3, 370/395.4, 370/395.41, 370/395.42, 370/395.5, 370/395.52, 370/395.53, 370412-421, 370431-457, 370458-463, 370464-497, 370498-529
• US Class Current: 370/331
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 47/767 after changing the attachment point, e.g. after hand-off
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04W 36/0016 Hand-off preparation specially adapted for end-to-end data sessions
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

An optimization method of multiple service flows operation for a WiMAX system includes: adding a resource combination indication to a hand-off request message, a path pre-registration request message and a path registration request message; hand-off request processing: when multiple service flows are handed off by a mobile station from a current serving network to a target network, determining whether the mobile station is allowed to hand off to a target network according to the resource combination indication in the hand-off request message and whether the handoff of the multiple service flows is accepted by the target network; path pre-establishment processing and path establishment processing: when the mobile station is allowed to hand off multiple service flows from the current serving network to the target network, determining whether data paths between the target network and the network where a data management unit is located can be pre-established/established according to the resource combination indication in the path pre-registration request message and the path registration request message and whether the data path pre-registration/registration of the multiple service flows can be established.

Claims

1. An optimization method of multiple service flows operation for a WiMAX system, including:

adding a resource combination indication to a handoff request message, a path pre-registration request message and a path registration request message, wherein the resource combination indication is used to indicate whether multiple service flows of a mobile station (MS) are bound with each other;

hand-off request processing;

determining whether the MS is allowed to hand off to a target network according to the resource combination indication in the hand-off request message and whether the handoff of the multiple service flows is accepted by the target network when the multiple service flows of the MS is handed off from a current serving network to the target network;

path pre-establishment processing;

determining whether data paths between the target network and a network where a data management unit is located (anchor ASN) can be pre-established according to the resource combination indication in the path pre-registration request message and the availability of establishing data path pre-registration of the multiple service flows when it is allowed to hand off the multiple service flows of the MS from the current serving network to the target network; and

path establishment processing;

determining whether the data paths between the target network and the anchor ASN can be established according to the resource combination indication in the path registration request message and the availability of establishing data path registration of the multiple service flows when it is allowed to hand off the multiple service flows of the MS from the current serving network to the target network and the path pre-registration processing is not performed.

2. The optimization method according to claim 1, wherein, in the hand-off request processing, it further includes:

the MS initiates the handoff to the current serving network or the current serving network initiates the handoff;

the current serving network sends the hand-off request message to the target network; and

when the resource combination indication in the hand-off request message indicates the multiple service flows of the MS are bound, if some of the multiple service flows are rejected by the target network, then the target network will determine that the MS is not allowed to hand off to the target network;

if none of the multiple service flows is rejected by the target network, then the target network will determine that the MS is allowed to hand off to the target network.

3. The optimization method according to claim 2, wherein, when the MS is not allowed to hand off to the target network, it further includes:

the target network sends a response message to the current serving network and the response message omits some information needed for subsequent handoff procedures; and

the current serving network informs the MS of candidate target networks to which the handoff will be performed, wherein the candidate target networks do not include the target network that rejects the MS.

4. The optimization method according to claim 1, wherein, in the path pre-establishment processing, it further includes:

the target network sends the path pre-registration request message to the anchor ASN, or the anchor ASN sends the path pre-registration request message to the target network; and

when the resource combination indication in the path pre-registration request message indicates the multiple service flows are bound with each other, if the target network or the anchor ASN fails in processing the path pre-registration of some of the multiple service flows, then the target network or the anchor ASN will determine that the pre-establishment of the data paths between the target network and the anchor ASN is not allowed, and will terminate the path pre-establishment processing;

if path pre-registration of all of the multiple service flows is successfully established, then the pre-establishment of the data paths will be allowed.

5. The optimization method according to claim 1, wherein, in the path establishment processing, it further includes:

the target network sends the path registration request message to the anchor ASN; and

when the resource combination indication in the path registration request message indicates the multiple service flows are bound with each other and the path pre-registration is not performed, if the anchor ASN fails in processing the path registration of some of the multiple service flows, then the anchor ASN will determine that the establishment of the data paths between the target network and the anchor ASN is not allowed, and will terminate the path establishment processing;

if the path registration of all of the multiple service flows is successfully established, then the establishment of the data paths between the target network and the anchor ASN will be allowed.

6. The optimization method according to claim 1, wherein, it further includes:

the resource combination indication that indicates the binding relationship among the multiple service flows of the MS is transferred from the current serving network to the target network during the handoff.

7. The optimization method according to claim 1, wherein, the expressions for the resource combination indication include at least one of the following:

a resource combination indication ID and a service flow ID are used cooperatively;

the multiple service flows in a binding relationship use the resource combination indication with a same ID; and

the respective resource combination indications are set respectively in information of each group of service flows among the multiple service flows for the binding relationship.

8. The optimization method according to claim 1, wherein, if the resource combination indication in the hand-off request message, the path pre-registration request message and the path registration request message indicates the multiple service flows are not bound with each other, then the hand-off request processing, the path pre-establishment processing and the path establishment processing will be performed and next, processing of the multiple service flows will be triggered.

9. The optimization method according to claim 1, wherein, the resource combination indication includes a resource combination requirement and a convergence sublayer type.

10. The optimization method according to claim 9, wherein, the convergence sublayer type is used to indicate the scope of the multiple service flows bound by the resource combination requirement.

12. The optimization method according to claim 2, wherein, if the resource combination indication in the hand-off request message, the path pre-registration request message and the path registration request message indicates the multiple service flows are not bound with each other, then the hand-off request processing, the path pre-establishment processing and the path establishment processing will be performed and next, processing of the multiple service flows will be triggered.

13. The optimization method according to claim 3, wherein, if the resource combination indication in the hand-off request message, the path pre-registration request message and the path registration request message indicates the multiple service flows are not bound with each other, then the hand-off request processing, the path pre-establishment processing and the path establishment processing will be performed and next, processing of the multiple service flows will be triggered.

14. The optimization method according to claim 4, wherein, if the resource combination indication in the hand-off request message, the path pre-registration request message and the path registration request message indicates the multiple service flows are not bound with each other, then the hand-off request processing, the path pre-establishment processing and the path establishment processing will be performed and next, processing of the multiple service flows will be triggered.

15. The optimization method according to claim 5, wherein, if the resource combination indication in the hand-off request message, the path pre-registration request message and the path registration request message indicates the multiple service flows are not bound with each other, then the hand-off request processing, the path pre-establishment processing and the path establishment processing will be performed and next, processing of the multiple service flows will be triggered.

16. The optimization method according to claim 6, wherein, if the resource combination indication in the hand-off request message, the path pre-registration request message and the path registration request message indicates the multiple service flows are not bound with each other, then the hand-off request processing, the path pre-establishment processing and the path establishment processing will be performed and next, processing of the multiple service flows will be triggered.

17. The optimization method according to claim 7, wherein, if the resource combination indication in the hand-off request message, the path pre-registration request message and the path registration request message indicates the multiple service flows are not bound with each other, then the hand-off request processing, the path pre-establishment processing and the path establishment processing will be performed and next, processing of the multiple service flows will be triggered.

18. The optimization method according to claim 2, wherein, the resource combination indication includes a resource combination requirement and a convergence sublayer type.

19. The optimization method according to claim 3, wherein, the resource combination indication includes a resource combination requirement and a convergence sublayer type.

20. The optimization method according to claim 4, wherein, the resource combination indication includes a resource combination requirement and a convergence sublayer type.

21. The optimization method according to claim 5, wherein, the resource combination indication includes a resource combination requirement and a convergence sublayer type.

22. The optimization method according to claim 6, wherein, the resource combination indication includes a resource combination requirement and a convergence sublayer type.

23. The optimization method according to claim 7, wherein, the resource combination indication includes a resource combination requirement and a convergence sublayer type.

24. The optimization method according to claim 18, wherein, the convergence sublayer type is used to indicate the scope of the multiple service flows bound by the resource combination requirement.

25. The optimization method according to claim 19, wherein, the convergence sublayer type is used to indicate the scope of the multiple service flows bound by the resource combination requirement.

26. The optimization method according to claim 20, wherein, the convergence sublayer type is used to indicate the scope of the multiple service flows bound by the resource combination requirement.

27. The optimization method according to claim 21, wherein, the convergence sublayer type is used to indicate the scope of the multiple service flows bound by the resource combination requirement.

28. The optimization method according to claim 22, wherein, the convergence sublayer type is used to indicate the scope of the multiple service flows bound by the resource combination requirement.

29. The optimization method according to claim 23, wherein, the convergence sublayer type is used to indicate the scope of the multiple service flows bound by the resource combination requirement.

11. An optimization method of multiple service flows operation for a WiMAX system, including:

adding multiple service flows binding indication information to a hand-off request message, a path pre-registration request message or a path registration request message, wherein the information is used to indicate whether multiple service flows of a mobile station (MS) are bound with each other;

hand-off request processing;

determining whether the MS is allowed to hand off to the target network according to the multiple service flows binding indication information in the hand-off request message and whether the handoff of the multiple service flows is accepted by a target network when the multiple service flows of the MS is handed off from a current serving network to the target network;

path pre-establishment processing;

determining whether data paths between the target network and a network where a data management unit is located (anchor ASN) can be pre-established according to the multiple service flows binding indication information in the path pre-registration request message and the availability of establishing data path pre-registration of the multiple service flows when it is allowed to hand off the multiple service flows of the MS from the current serving network to the target network; and

path establishment processing;

determining whether the data paths between the target network and the anchor ASN can be established according to the multiple service flows binding indication information in the path registration request message and the availability of establishing data path registration of the multiple service flows when it is allowed to hand off the multiple service flows of the MS from the current serving network to the target network and the path pre-registration processing is not performed.