Patent ID: 8229391

Claim:
A method for managing emergency services of a mobility-restricted Mobile Station (MS), comprising: obtaining, by an Anchor-Service Flow Authorization entity (A-SFA), emergency service information or an Emergency Service Flag (ES_Flag), wherein the emergency service information or the ES_Flag serves as an indication of providing an emergency service for the mobility-restricted MS; constructing, according to the emergency service information or the ES_Flag, an emergency service indicator in an MS context maintained by the A-SFA; and sending a Path Registration Request (Path_Reg_Req) to a Base Station (BS), wherein the Path_Reg_Req carries the ES_Flag if what is obtained is the ES_Flag; or if what is obtained is the emergency service information, generating an ES_Flag according to the emergency service indicator or the emergency service information, and adding the generated ES_Flag into the Path_Reg_Req; wherein the obtaining of the emergency service information or the ES_Flag further comprises one or more of: receiving an indication of initiating setup of an emergency service bearer path and a service flow, wherein the indication is sent by a Voice Service Provider (VSP) and carries the emergency service information; or receiving an Access Accept indication from an Authentication, Authorization and Accounting (AAA) server, wherein the Access Accept indication carries the ES_Flag; or receiving a Policy and Charging Control (PCC) indication from a Policy Control and Charging Rules Function (PCRF), wherein the PCC indication carries the ES_Flag.