Patent ID: 8719424
Filing Date: 2014-05-06
Classification: H04L,H04W

Abstract:
1. A transmission method of converged IP messaging (CPM), comprising: creating message session relay protocol (MSRP) links between a CPM client and an originating participating function (PF) entity and between an interworking function (IWF) entity and the originating PF entity, respectively; the CPM client sending CPM message to the IWF entity through each MSRP link, the IWF entity executing a protocol conversion on received CPM message to send the message after conversion to a non-CPM system; wherein, a creating process of the MSRP link comprises: a creator of the MSRP link obtaining MSRP connection parameters of an opposite end through an session description protocol (SDP) medium negotiation process, said creator creating the MSRP link according to the MSRP connection parameters; wherein, said SDP medium negotiation process comprises: the CPM client sending first session invite message, which is received by the originating PF entity; the originating PF entity sending second session invite message, which is received by an interworking selection function (ISF) entity; the ISF entity selecting an IWF entity based on the second session invite message and sending third session invite message, which is received by the IWF entity; the IWF entity sending third success response message, which is received by the ISF entity; the ISF entity sending second success response message, which is received by the originating PF entity; the originating PF entity sending first success response message, which is received by a sender CPM client, further comprising: the CPM client receiving the first response message and then sending first acknowledge message, which is received by the originating PF entity; the originating PF entity receiving the first acknowledge message and then sending second acknowledge message, which is received by the ISF entity; the ISF entity receiving the second acknowledge message and then sending third acknowledge message, which is received by the IWF entity; or the originating PF entity receiving the second success response message and then sending the second acknowledge message, which is received by the ISF entity; the sender CPM client receiving the first success response message and then sending the first acknowledge message, which is received by the originating PF entity.