SIP header to indicate mobility transfer operation

摘要

A method (500) of indicating a process to be implemented in support of a mobility transfer operation and a method (600) of responding to a mobility transfer operation being initiated. A session initiation protocol (SIP) request (120, 124, 128, 220, 226, 228) can be generated. The SIP request can indicate a mobility transfer type that corresponds to the mobility transfer operation. The SIP request can be sent from a first device (102, 106) participating in the mobility transfer operation to at least a second device (106, 102) participating in the mobility transfer operation.

主权项

1. A method of indicating a process to be implemented in support of mobility transfer operations, comprising:
responsive to detecting that a mobility transfer operation has been initiated where a client device has roamed from a first communication network to a second communication network during a communication session, generating a session initiation protocol (SIP) request that includes a mobile transfer type indicator in the header of the SIP request that indicates a mobility transfer type from a plurality of mobility transfer types that corresponds to the mobility transfer operation being performed and that includes at least one information parameter in a body of the SIP request that describes a characteristic of a second communication segment established via the second communication network that is different than a corresponding characteristic of a first communication segment established via the first communication network; and sending the SIP request from the client device participating in the mobility transfer operation to at least a home communication network that includes a mobility application server to request that the second communication segment be established between the client device and the mobility application server in order to maintain the communication session being transferred to the second communication segment from the first communication segment.