Patent ID: 7882266

Claim:
A method for interface data path establishment in a WIMAX (Worldwide Interoperability Microwave Access) network comprising: an Anchor ASN-GW (Access Service Network Gateway), a Target ASN-GW, and a CSN (Connectivity Service Network), wherein an MSS/SS (Mobile Subscriber Stations/Subscriber Station) is served by the Anchor ASN-GW and accesses the CSN through an R 3 data path between the Anchor ASN-GW and the CSN, the data path establishment comprising: deciding, by the Target ASN-GW for the MSS/SS, whether to establish an R 4 data path between the Anchor ASN-GW and the Target ASN-GW or relocate the R 3 data path between the Anchor ASN-GW and the CSN to between the Target ASN-GW and the CSN for the MSS/SS based on service policy and resource conditions of the Target ASN-GW, and sending a request corresponding to the decision to the Anchor ASN-GW; determining a result, by the Anchor ASN-GW, according to the request from the Target ASN-GW, or the request from the Target ASN-GW and a local decision made by the Anchor ASN-GW according to service policy and resource conditions of the Anchor ASN-GW, and returning a reply to the Target ASN-GW according to the result; wherein the determining a result by the Anchor ASN-GW comprises: determining, by the Anchor ASN-GW, the result as establishing an R 4 data path when the request from the Target ASN-GW and the local decision are to establish an R 4 data path; determining directly, by the Anchor ASN-GW, the result as relocating the R 3 data path when the request from the Target ASN-GW is to relocate the R 3 data path; determining, by the Anchor ASN-GW, the result as relocating the R 3 data path when the request from the Target ASN-GW is to establish an R 4 data path, but the local decision is to relocate the R 3 data path; establishing a data path according to the result determined by the Anchor ASN-GW and transmitting data between the MSS/SS and CSN according to WiMAX protocol via the established data path.