Communication method, signaling control network element, media control network element and communication system

A communication method implemented at a media control network element, the media control network element being connected to a signaling control network element, the media control network element being connected to at least one application entity, the signaling control network element being communicatively connected to at least one terminal device via a CSCF, the signaling control network element being connected to at least one application entity, comprising:

• acquiring a transparent transmission channel resource request from the signaling control network element;
• allocating transparent transmission channel resource information for establishing a transparent transmission channel according to the transparent transmission channel resource request;
• sending the transparent transmission channel resource information to the signaling control network element to perform coordination processing on a first terminal device via the signaling control network element, thereby creating a transparent transmission channel between the media control network element and the first terminal device;
• acquiring a first resource identifier from a signaling processing unit, wherein the first resource identifier is a resource identifier of a first application entity;
• and
• determining a data transmission relationship between the transparent transmission channel and the first application entity corresponding to the first resource identifier according to the first resource identifier.

A signaling control network element, comprising:

• a memory, a processor, and a computer program stored on the memory and executable on the processor, the signaling control network element being communicatively connected to at least one terminal device via a Call Session Control Function CSCF, the signaling control network element being connected to at least one application entity, the signaling control network element being connected to at least one application entity, wherein the processor performing operations upon executing the computer program, wherein the operations include:
• acquiring a transparent transmission channel creation request which carries a first terminal identifier;
• performing, according to the transparent transmission channel creation request, negotiation processing with a media control network element and a first terminal device corresponding to the first terminal identifier, to create a transparent transmission channel between the media control network element and the first terminal device;
• obtaining a first resource identifier of a first application entity according to the transparent transmission channel creation request;
• sending the first resource identifier to the media control network element such that a media control network element determines a data transmission relationship between the transparent transmission channel and the first application entity corresponding to an application identifier,
• wherein when the transparent transmission channel creation request comes from the application entity, the performing, according to the transparent transmission channel creation request, negotiation processing, on the media control network element and a first terminal device corresponding to the first terminal identifier, to create a transparent transmission channel between the media control network element and the first terminal device comprises:
• sending a transparent transmission channel creation indication to the media control network element according to the transparent transmission channel creation request;
• acquiring transparent transmission channel resource information from the media control network element;
• sending a transparent transmission channel call request to the first terminal device corresponding to the first terminal identifier via the CSCF according to the transparent transmission channel resource information to create the transparent transmission channel between the media control network element and the first terminal device.