CN117376322A - Interaction method, system and P-CSCF for multimedia real-time service - Google Patents

Abstract

The disclosure relates to an interaction method and system of multimedia real-time service and a P-CSCF, and relates to the technical field of communication. The method of the present disclosure comprises: the proxy call session control function P-CSCF receives a service request sent by a first terminal, wherein the service request comprises: identification of multimedia real-time services; the P-CSCF determines a media processing mode according to the service request and triggers a core network element to establish a first terminal special bearer; the P-CSCF sends the service request to the second terminal so that the second terminal establishes the connection of the multimedia real-time service with the first terminal.

Description

Interaction method, system and P-CSCF for multimedia real-time service

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and a system for interaction of a multimedia real-time service, and a P-CSCF.

Background

With the development of 5G (5 th Generation Mobile Communication Technology, fifth generation mobile communication technology), the requirements of real-time performance of multimedia service and experience of multimedia service interaction are higher and higher for the development of intelligent terminals.

Multimedia real-time services, for example, XR (Extended Reality) services are implemented by service providers by adopting a CS (Client-Server) architecture, and each service provider deploys a Server and provides a customer service.

Disclosure of Invention

The inventors found that: communication cannot be performed between multimedia real-time service terminals of different service providers, and the multimedia real-time service is transmitted through a common data channel without providing QoS (Quality of Service ) guarantee.

One technical problem to be solved by the present disclosure is: an interactive method of multimedia real-time service based on IMS (IP Multimedia Subsystem, IP multimedia system) is provided, which provides interactive service of multimedia real-time service with QoS guarantee for multimedia real-time service terminals of different service providers.

According to some embodiments of the present disclosure, an interaction method for a multimedia real-time service is provided, including: the proxy call session control function P-CSCF receives a service request sent by a first terminal, wherein the service request comprises: identification of multimedia real-time services; the P-CSCF determines a media processing mode according to the service request and triggers a core network element to establish a first terminal special bearer; the P-CSCF sends the service request to the second terminal so that the second terminal establishes the connection of the multimedia real-time service with the first terminal.

In some embodiments, the service request is one of an INVITE message, a Re-INVITE message, or an UPDATE message.

In some embodiments, the service request includes session description protocol, SDP, information including an identification of the multimedia real-time service.

In some embodiments, the media processing mode includes: media proxy mode and media non-proxy mode.

In some embodiments, the P-CSCF determining the media processing mode based on the service request comprises: the P-CSCF searches a corresponding media processing mode according to the identification of the multimedia real-time service; and under the condition that the media processing mode corresponding to the identification of the multimedia real-time service is found to be a media non-proxy mode, the media route of the multimedia real-time service does not pass through the P-CSCF.

In some embodiments, the P-CSCF maintains the address and port of the first terminal unchanged in the service request if the media processing mode corresponding to the identification of the multimedia real-time service is found to be a media non-proxy mode.

In some embodiments, the P-CSCF-th sending the service request to the second terminal includes: the P-CSCF sends the service request to the S-CSCF serving the call session control function; the S-CSCF forwards the service request to a control platform of the multimedia real-time service for processing according to the identifier of the multimedia real-time service; the S-CSCF receives the processed service request returned by the control platform; the S-CSCF sends the processed service request to the second terminal.

In some embodiments, forwarding the service request to the control platform of the multimedia real-time service comprises: the control platform receives the service request; the control platform modifies the address and port of the first terminal in the service request to the address and port of the media processing platform.

In some embodiments, forwarding the service request to the control platform of the multimedia real-time service comprises: the control platform sends a media resource application request to the media processing platform according to the service request; the media processing platform performs resource allocation according to the media resource application request and sends an allocation response to the control platform; and the control platform processes the service request according to the configuration response.

In some embodiments, the control platform processing the service request according to the configuration response includes: and the control platform modifies the address and the port of the first terminal in the service request into the address and the port of the media processing platform under the condition that the configuration response is successful, and does not modify the address and the port of the first terminal in the service request under the condition that the configuration response is failed.

In some embodiments, the method further comprises: the P-CSCF receives a service response sent by the second terminal; the P-CSCF determines a media processing mode according to a service request corresponding to the service response and triggers a core network element to establish a special bearer of the second terminal; the P-CSCF sends the service response to the S-CSCF.

In some embodiments, the method further comprises: the S-CSCF sends the service response to a control platform of the multimedia real-time service for processing; the S-CSCF receives the processed service response returned by the control platform; the S-CSCF sends the processed service response to the first terminal.

In some embodiments, the processing by the S-CSCF sending the service response to the control platform for the multimedia real-time service includes: the control platform receives the service response; the control platform modifies the address and port of the second terminal in the service response to the address and port of the media processing platform.

In some embodiments, the method further comprises: and the first terminal generates a service request according to the category of the multimedia real-time service and sends the service request to the P-CSCF.

In some embodiments, different classes of traffic correspond to different identifications.

In some embodiments, the method further comprises: the second terminal determines whether the multimedia real-time service is supported according to the service request, generates a service response, and returns the service response to the first terminal through the network.

In some embodiments, the method further comprises: after the first terminal and the second terminal establish the connection of the multimedia real-time service, the first terminal and the second terminal interact with the multimedia real-time service through the media processing platform.

According to further embodiments of the present disclosure, a proxy call session control function, P-CSCF, is provided comprising: the receiving module is configured to receive a service request sent by a first terminal, where the service request includes: identification of multimedia real-time services; the strategy module is used for determining a media processing mode according to the service request and triggering a core network element to establish a first terminal special bearing; and the sending module is used for sending the service request to the second terminal so that the second terminal establishes the connection of the multimedia real-time service with the first terminal.

According to still further embodiments of the present disclosure, an interactive system for a multimedia real-time service is provided, including: the proxy call session control function P-CSCF of any of the previous embodiments; the first terminal is used for sending a service request to the P-CSCF; and the second terminal is used for receiving the service request forwarded by the P-CSCF and establishing the connection of the multimedia real-time service with the first terminal.

In some embodiments, the system further comprises: and the service call session control function S-CSCF is used for receiving the service request sent by the P-CSCF, forwarding the service request to the control platform of the multimedia real-time service for processing according to the identifier of the multimedia real-time service, receiving the processed service request returned by the control platform, and sending the processed service request to the second terminal.

In some embodiments, the system further comprises: and the control platform is used for receiving the service request sent by the S-CSCF and modifying the address and the port of the first terminal in the service request into the address and the port of the media processing platform.

In some embodiments, the system further comprises: a control platform and a media processing platform of the multimedia real-time service; the control platform is used for sending a media resource application request to the media processing platform according to the service request, receiving a configuration response returned by the media processing platform, and processing the service request according to the configuration response; the media processing platform is used for carrying out resource configuration according to the media resource application request and sending a configuration response to the control platform.

In some embodiments, the control platform is configured to modify the address and the port of the first terminal in the service request to the address and the port of the media processing platform if the configuration response is successful, and not modify the address and the port of the first terminal in the service request if the configuration response is failed.

In some embodiments, the second terminal is further configured to determine whether to support the multimedia real-time service according to the service request, generate a service response, and send the service response to the P-CSCF; the S-CSCF is also used for receiving the service response forwarded by the P-CSCF, sending the service response to the control platform of the multimedia real-time service for processing, receiving the processed service response returned by the control platform, and sending the processed service response to the first terminal.

In some embodiments, the system further comprises: and the control platform is used for receiving the service response and modifying the address and the port of the second terminal in the service response into the address and the port of the media processing platform.

In some embodiments, the system further comprises: and the media processing platform is used for processing the multimedia real-time service between the first terminal and the second terminal.

According to still further embodiments of the present disclosure, there is provided a communication apparatus including: a processor; and a memory coupled to the processor for storing instructions that, when executed by the processor, cause the processor to perform the interactive method of the multimedia real-time service of any of the embodiments described above.

In the disclosure, a P-CSCF receives a service request sent by a first terminal, a service request type adds an identifier of a multimedia real-time service, the P-CSCF triggers a first core network element to establish a special bearer of the first terminal according to the identifier of the multimedia real-time service, and the service request is sent to a second terminal so that the second terminal establishes connection of the multimedia real-time service with the first terminal. The method and the device realize the connection of the multimedia real-time service based on the IMS, can realize the interaction between the multimedia real-time service terminals of different service providers, and have better universality. By establishing a special bearing for the multimedia real-time service, the multimedia real-time service is borne in the special bearing with QoS guarantee, the requirement of the multimedia real-time service on a bearing network can be met, and the service experience is better. Can be realized based on the existing IMS network, and has good feasibility.

Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1A illustrates a flow diagram of an interaction method of a multimedia real-time service according to some embodiments of the present disclosure.

Fig. 1B shows a flow diagram of an interaction method of a multimedia real-time service according to further embodiments of the present disclosure.

Fig. 2 shows a flow diagram of an interaction method of a multimedia real-time service according to further embodiments of the present disclosure.

Fig. 3 shows a flow diagram of an interaction method of a multimedia real-time service according to further embodiments of the present disclosure.

Fig. 4 illustrates a schematic structure diagram of a P-CSCF of some embodiments of the present disclosure.

Fig. 5 illustrates a structural schematic diagram of an interactive system of a multimedia real-time service of some embodiments of the present disclosure.

Fig. 6 illustrates a schematic structural diagram of a communication device of some embodiments of the present disclosure.

Fig. 7 shows a schematic structural diagram of a communication device of other embodiments of the present disclosure.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

The present disclosure provides an interaction method for a multimedia real-time service, which is described below with reference to fig. 1A to 3.

Fig. 1A is a flowchart of some embodiments of an interaction method of the multimedia real-time service of the present disclosure. As shown in fig. 1A, the method of this embodiment includes: steps S102 to S106.

In step S102, the P-CSCF (Proxy-Call Session Control Function, proxy call session control function) receives a service request sent by the first terminal.

The P-CSCF may contain the functionality of or co-provision with the BAC (Border Access Controller, edge access control) in the actual deployment of the operator. The service request includes: and (5) identifying the multimedia real-time service. The multimedia real-time service is for example an XR service, not limited to the illustrated example. XR services are, for example, AR (Augmented Reality ), VR (Virtual Reality), MR (Mixed Reality), and the like.

In some embodiments, the service request is one of an INVITE message, a Re-INVITE message, or an UPDATE message, and the service request includes SDP (Session Description Protocol ) information including an identification of the multimedia real-time service. For example, the SDP information parameter+sip.app-subtype is set to the identity of the multimedia real-time service. For example, +sip.app-subtype= "XR" to represent XR traffic.

In step S104, the P-CSCF determines a media processing mode according to the service request, and triggers the core network element to establish the first terminal-specific bearer.

The media processing modes include: media proxy mode and media non-proxy mode. The media non-proxy mode includes: the media routing of the multimedia real-time service is not passed through the mode of the P-CSCF. In some embodiments, the P-CSCF may store media processing modes corresponding to different services in advance, and may find the corresponding media processing mode according to the service identifier. The P-CSCF searches a corresponding media processing mode according to the identification of the multimedia real-time service; and under the condition that the media processing mode corresponding to the identification of the multimedia real-time service is found to be a media non-proxy mode, the media route of the multimedia real-time service does not pass through the P-CSCF. For example, the P-CSCF determines not to modify the address of the first terminal in the service request to the address of the P-CSCF so that media routing of the multimedia real-time service does not pass through the P-CSCF.

In the prior art, for some conventional services, such as audio or video services, the P-CSCF may employ a media proxy mode, i.e. the address of the terminal in the service request of the audio or video service is modified to the address of the P-CSCF, so that the media routing of the audio or video service needs to pass through the P-CSCF. Aiming at the multimedia real-time service, a media non-proxy mode is adopted, so that the subsequent media routing of the multimedia real-time service does not pass through the P-CSCF, on one hand, the resource occupation of the P-CSCF can be reduced, and on the other hand, the routing efficiency and the real-time performance of the multimedia real-time service can be improved.

The P-CSCF may trigger the first core network element to establish a dedicated bearer for the multimedia real-time service, e.g. an IMS Data Channel dedicated bearer. The first core network element is, for example, a first PCF (Policy Control function ) or a first PCRF (Policy and Charging Rules Function, policy and charging rules function), etc.

In step S106, the P-CSCF sends the service request to the second terminal so that the second terminal establishes a connection of the multimedia real-time service with the first terminal.

In some embodiments, the P-CSCF sends the Service request to the S-CSCF (Service-Call Session Control Function, serving Call Session control function); the S-CSCF forwards the service request to a control platform of the multimedia real-time service for processing according to the identifier of the multimedia real-time service; the S-CSCF receives the processed service request returned by the control platform; the S-CSCF sends the processed service request to the second terminal.

In some embodiments, the control platform receives the service request and modifies the address and port of the first terminal in the service request to the address and port of the media processing platform.

In some embodiments, the control platform sends a media resource application request to the media processing platform according to the service request; the media processing platform performs resource allocation according to the media resource application request and sends an allocation response to the control platform; and the control platform processes the service request according to the configuration response. For example, the media processing platform configures storage resources, processing resources, bandwidth and other resources for the multimedia real-time service.

Further, the control platform modifies the address and the port of the first terminal in the service request to the address and the port of the media processing platform under the condition that the configuration response is successful, and does not modify the address and the port of the first terminal in the service request under the condition that the configuration response is failed.

The P-CSCF and the S-CSCF are network elements at the first terminal side. The control platform of the multimedia real-time service is mainly used for transmitting related signaling of the multimedia real-time service, and the media processing platform is mainly used for processing the multimedia real-time service, such as XR real-time rendering and the like. The address and port of the first terminal in the service request are modified into the address and port of the media processing platform, so that the subsequent interaction of the multimedia real-time service between the first terminal and the second terminal is processed through the processing platform. Multimedia real-time services performed between different terminals can be transmitted through different ports of the processing platform. The address of the first terminal and the address of the processing platform are e.g. IP addresses.

In the above embodiment, the P-CSCF receives a service request sent by the first terminal, where the service request is added with an identifier of a multimedia real-time service, and triggers the first core network element to establish a bearer dedicated to the first terminal according to the identifier of the multimedia real-time service, and sends the service request to the second terminal, so that the second terminal establishes a connection with the first terminal. The method of the embodiment realizes the connection of the multimedia real-time service based on the IMS, can realize the interaction between the multimedia real-time service terminals of different service providers, and has better universality. By establishing a special bearing for the multimedia real-time service, the multimedia real-time service is borne in the special bearing with QoS guarantee, the requirement of the multimedia real-time service on a bearing network can be met, and the service experience is better. Can be realized based on the existing IMS network, and has good feasibility.

In addition, the P-CSCF executes the media non-proxy mode according to the service request, so that the media route of the multimedia real-time service does not pass through the P-CSCF, the occupation of P-CSCF resources is reduced, and the efficiency and the instantaneity of the multimedia real-time service are improved.

Further embodiments of the interactive method of the multimedia real-time service of the present disclosure are described below in conjunction with fig. 1B.

Fig. 1B is a flowchart of another embodiment of an interaction method of the multimedia real-time service of the present disclosure. As shown in fig. 1B, the method of this embodiment includes: steps S110 to S123.

In step S110, the first terminal generates a service request according to the category of the multimedia real-time service, and sends the service request to the P-CSCF.

For example, different classes of traffic correspond to different identifications.

In step S111, the P-CSCF determines a media processing mode according to the service request and triggers the core network element to establish the first terminal-specific bearer.

In step S112, the P-CSCF sends the service request to the S-CSCF.

In step S113, the S-CSCF forwards the service request to the control platform of the multimedia real-time service for processing.

The control platform sends a media resource application request to the media processing platform according to the service request; the media processing platform performs resource allocation according to the media resource application request and sends an allocation response to the control platform; in the case that the configuration response is successful, step S114 is performed.

In step S114, the control platform modifies the address and port of the first terminal in the service request to the address and port of the media processing platform.

In step S115, the control platform returns the processed service request to the S-CSCF, which forwards the processed service request to the P-CSCF.

In step S116, the P-CSCF transmits the processed service request to the second terminal.

In step S117, the second terminal determines whether the multimedia real-time service is supported according to the service request, generates a service response, and sends the service response to the P-CSCF, and correspondingly, the P-CSCF receives the service response sent by the second terminal.

In step S118, the P-CSCF determines a media processing mode according to the service request corresponding to the service response, and triggers the core network element to establish the second terminal dedicated bearer.

For example, the P-CSCF adopts a media non-proxy mode.

In step S119, the P-CSCF sends the service response to the S-CSCF, and the S-CSCF receives the service response sent by the P-CSCF, accordingly.

In step S120, the S-CSCF sends the service response to the control platform for processing.

In step S121, the control platform modifies the address and port of the second terminal in the service response to the address and port of the media processing platform.

In step S122, the control platform returns the processed service response to the S-CSCF, which forwards the processed service response to the P-CSCF.

In step S123, the S-CSCF forwards the processed service response to the P-CSCF, which sends the processed service response to the first terminal.

In the above embodiment, the first terminal and the second terminal interact through the same network element (P-CSCF, S-CSCF, control platform, and media processing platform), and the first terminal and the second terminal may correspond to different network elements, for example, the first terminal corresponds to a first P-CSCF, a first S-CSCF, a first control platform, and a first media processing platform, and the second terminal corresponds to a second P-CSCF, a second S-CSCF, a second control platform, and a second media processing platform, where the first P-CSCF and the second P-CSCF respectively have the functions of the P-CSCF in the above embodiment, the first S-CSCF and the second S-CSCF respectively have the functions of the S-CSCF in the above embodiment, and the first control platform and the second control platform respectively have the functions of the control platform in the above embodiment, and the first media processing platform and the second media processing platform respectively have the functions of the media processing platform in the above embodiment.

Further embodiments of the interactive method of the disclosed multimedia real-time service are described below in connection with fig. 2.

Fig. 2 is a flowchart of other embodiments of an interaction method of the multimedia real-time service of the present disclosure. As shown in fig. 2, the method of this embodiment includes: steps S202 to S224.

In step S202, the first terminal generates a service request according to the category of the multimedia real-time service, and sends the service request to the first P-CSCF.

A service module may be added to the first terminal for generating a service request according to a requirement of the multimedia real-time service, that is, for implementing a media negotiation function for providing the multimedia real-time service based on the IMS. The service module is used for adding the identification of the multimedia real-time service in SDP information of the service request (INVITE, re-INVITE or UPDATE).

In step S204, the first P-CSCF determines a media processing mode according to the service request, and triggers the core network element to establish the first terminal dedicated bearer.

A policy module may be added to the first P-CSCF, which is configured to trigger an establishment procedure of a Data Channel dedicated bearer according to the identifier of the multimedia real-time service, and then send the service request to the first S-CSCF, where the media non-proxy mode is adopted, and the media IP address and the port in the SDP information are not modified later (the media IP address in the service request initiated by the first terminal is the IP address and the port of the first terminal).

The first P-CSCF sends the service request to the first S-CSCF in step S206.

In step S208, the first S-CSCF forwards the service request to the first control platform of the multimedia real-time service for processing according to the identifier of the multimedia real-time service.

And a forwarding module can be newly added in the first S-CSCF and used for triggering the multimedia real-time service to the first control platform according to the identifier of the multimedia real-time service.

In step S210, the first control platform modifies the address of the first terminal in the service request to the address and port of the media processing platform.

In step S212, the first control platform returns the service request to the first S-CSCF.

In step S214, the first S-CSCF sends the service request to the second S-CSCF.

In step S216, the second S-CSCF sends the service request to the second control platform.

The first control platform and the second control platform may be the same platform, and the first media processing platform and the second media processing platform may be the same platform, in this case, the second S-CSCF may forward the service request to the control platform for processing according to the DC identifier, and the control platform determines that the address and the port of the first terminal in the service request have been modified to the address and the port of the media processing platform, and returns the service request to the second S-CSCF. Or the second S-CSCF does not send the service request to the control platform according to the address and the port of the media processing platform which are modified in the service request. And an interaction coordination module can be added in the second S-CSCF and used for triggering the service request to the second control platform according to the DC identifier.

In step S218, the second control platform modifies the address and port of the first terminal in the service request to the address and port of the second media processing platform according to the identifier of the multimedia real-time service.

In step S220, the second control platform returns the service request to the second S-CSCF.

The second S-CSCF sends the service request to the second P-CSCF in step S222.

The second P-CSCF sends the service request to the second terminal in step S224.

Some embodiments of the signaling flow for the first S-CSCF to send a service request to the second terminal, and for the second terminal to return a service response later are described below in connection with fig. 3.

Fig. 3 is a flow chart of yet other embodiments of an interaction method of the multimedia real-time service of the present disclosure. As shown in fig. 3, the method of this embodiment includes: steps S302 to S326.

In step S302, the second terminal determines whether to support the multimedia real-time service according to the service request, generates a service response, and sends the service response to the second P-CSCF.

The second terminal may return a negotiation success message, for example, 200OK, if interaction of the multimedia real-time service is supported, and may return a negotiation failure message if interaction of the real-time data is not supported.

In step S304, the second P-CSCF searches for a media processing mode corresponding to the multimedia real-time service, and executes the corresponding media processing mode.

In some embodiments, the second P-CSCF triggers the second core network element to establish a second terminal-specific bearer, and determines not to modify the address and port of the second terminal in the service response to the address and port of the second P-CSCF. The media route of the subsequent multimedia real-time service does not pass through the second P-CSCF, so that the resource occupation of the second P-CSCF can be reduced on the one hand, and the routing efficiency and the instantaneity of the real-time data can be improved on the other hand.

The second P-CSCF may trigger the second core network element to establish a dedicated bearer for the second terminal. The second core network element is, for example, a second PCF or a second PCRF.

The second P-CSCF sends the service response to the second S-CSCF in step S306.

In step S308, the second S-CSCF sends the service response to the second control platform.

The second S-CSCF may determine, according to the session identifier, that the service response and the service request belong to the same session, and then send the service response to the second control platform.

In step S310, the second control platform modifies the address and port of the second terminal in the service response to the address and port of the second media processing platform.

In step S312, the second control platform returns a service response to the second S-CSCF.

In step S314, the second S-CSCF sends the service response to the first S-CSCF.

In step S316, the first S-CSCF forwards the service response to the first control platform for processing.

In step S318, the first control platform modifies the address and port of the second media processing platform in the service response to the address and port of the first media processing platform.

In step S320, the first control platform returns a service response to the first S-CSCF.

The first S-CSCF sends the service response to the first P-CSCF in step S322.

The first P-CSCF transmits the service response to the first terminal in step S324.

In step S326, the first terminal and the second terminal perform real-time data interaction through the first media processing platform and the second media processing platform.

In the above embodiment, the service request and the service response carry the identifier of the multimedia real-time service by expanding the SDP parameter, and the S-CSCF triggers the control platform of the multimedia real-time service according to the identifier, so that only the multimedia real-time service triggers the control platform, and the existing audio and video services are not affected. The P-CSCF triggers the establishment flow of the special bearer according to the identifier of the multimedia real-time service, and the multimedia real-time service can be borne on the Data Channel, so that the interactive service of the multimedia real-time service with QoS guarantee is provided for the multimedia real-time service terminal, and meanwhile, a media non-proxy mode can be adopted, so that the time delay is reduced, and the resources are saved.

The present disclosure also provides a proxy call session control function (P-CSCF), described below in connection with fig. 4.

Fig. 4 is a block diagram of some embodiments of a P-CSCF of the present disclosure. As shown in fig. 4, the P-CSCF40 of this embodiment includes: receiving module 410, policy module 420, transmitting module 430

The receiving module 410 is configured to receive a service request sent by a first terminal, where the service request includes: and (5) identifying the multimedia real-time service.

In some embodiments, the service request is one of an INVITE message, a Re-INVITE message, or an UPDATE message. The service request includes session description protocol SDP information, which includes an identification of the multimedia real-time service.

The policy module 420 is configured to determine a media processing mode according to the service request, and trigger the core network element to establish a first terminal-specific bearer.

In some embodiments, the media processing mode includes: media proxy mode and media non-proxy mode.

In some embodiments, the policy module 420 is configured to search for a corresponding media processing mode according to the identifier of the multimedia real-time service; and under the condition that the media processing mode corresponding to the identification of the multimedia real-time service is found to be a media non-proxy mode, the media route of the multimedia real-time service does not pass through the P-CSCF.

In some embodiments, in the case that the media processing mode corresponding to the identifier of the multimedia real-time service is found to be the media non-proxy mode, the policy module 420 is configured to keep the address and the port of the first terminal in the service request unchanged.

The sending module 430 is configured to send a service request to the second terminal, so that the second terminal establishes a connection of the multimedia real-time service with the first terminal.

In some embodiments, the sending module 430 is configured to send the service request to a serving call session control function S-CSCF.

In some embodiments, the receiving module 410 is further configured to receive a service response sent by the second terminal; the policy module 420 is further configured to determine a media processing mode according to a service request corresponding to the service response, and trigger the core network element to establish a second terminal dedicated bearer; the sending module 430 is further configured to send the service response to the S-CSCF.

The present disclosure also provides an interactive system for multimedia real-time services, which is described below in connection with fig. 5.

Fig. 5 is a block diagram of some embodiments of an interactive system for multimedia real-time services of the present disclosure. As shown in fig. 5, the system 5 of this embodiment includes: the P-CSCF40 of any of the previous embodiments.

The system 5 further comprises: a first terminal 51 for sending a service request to the P-CSCF 40; a second terminal 52, configured to receive the service request forwarded by the P-CSCF40, and establish a connection of the multimedia real-time service with the first terminal 51.

In some embodiments, the system 5 further comprises: the S-CSCF53 is configured to receive the service request forwarded by the P-CSCF40, forward the service request to the control platform of the multimedia real-time service for processing according to the identifier of the multimedia real-time service, receive the processed service request returned by the control platform, and send the processed service request to the second terminal 52.

In some embodiments, the system 5 further comprises: and the control platform 54 is configured to receive the service request sent by the S-CSCF53, and modify the address and the port of the first terminal 51 in the service request to the address and the port of the media processing platform.

In some embodiments, the system 5 further comprises: the media processing platform 55, the control platform 54 is used for sending a media resource application request to the media processing platform 55 according to the service request, receiving a configuration response returned by the media processing platform 55, and processing the service request according to the configuration response; the media processing platform 55 is configured to perform resource allocation according to the media resource application request, and send an allocation response to the control platform 54.

The control platform 54 is configured to modify the address and port of the first terminal 51 in the service request to the address and port of the media processing platform 55 if the configuration response is successful, and not modify the address and port of the first terminal 51 in the service request if the configuration response is failed.

In some embodiments, the second terminal 52 is further configured to determine whether to support the multimedia real-time service according to the service request, and generate a service response, and send the service response to the P-CSCF40; the S-CSCF53 is further configured to receive the service response forwarded by the P-CSCF40, send the service response to the control platform 54 for multimedia real-time service for processing, receive the processed service response returned by the control platform 54, and send the processed service response to the first terminal 51.

In some embodiments, the control platform 54 is configured to receive the service response and modify the address and port of the second terminal 52 in the service response to the address and port of the media processing platform 55.

In some embodiments, the media processing platform 55 is used to process multimedia real-time traffic between the first terminal and the second terminal.

The communication apparatus in embodiments of the present disclosure, e.g., P-CSCF, S-CSCF, terminal, control platform, processing platform, etc., may each be implemented by various computing devices or computer systems, as described below in connection with fig. 6 and 7.

Fig. 6 is a block diagram of some embodiments of a communications device of the present disclosure. As shown in fig. 6, the apparatus 60 of this embodiment includes: a memory 610 and a processor 620 coupled to the memory 610, the processor 620 being configured to perform the method of interaction of the multimedia real-time services in any of the embodiments of the present disclosure based on instructions stored in the memory 610.

The memory 610 may include, for example, system memory, fixed nonvolatile storage media, and the like. The system memory stores, for example, an operating system, application programs, boot Loader (Boot Loader), database, and other programs.

Fig. 7 is a block diagram of further embodiments of the communication device of the present disclosure. As shown in fig. 7, the apparatus 70 of this embodiment includes: memory 710 and processor 720 are similar to memory 610 and processor 620, respectively. Input/output interface 730, network interface 740, storage interface 750, and the like may also be included. These interfaces 730, 740, 750, as well as the memory 710 and the processor 720, may be connected by a bus 760, for example. The input/output interface 730 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, a touch screen, etc. The network interface 740 provides a connection interface for various networking devices, such as may be connected to a database server or cloud storage server, or the like. Storage interface 750 provides a connection interface for external storage devices such as SD cards, U-discs, and the like.

It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flowchart and/or block of the flowchart illustrations and/or block diagrams, and combinations of flowcharts and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the disclosure, but rather to enable any modification, equivalent replacement, improvement or the like, which fall within the spirit and principles of the present disclosure.

Claims (27)

1. An interactive method of multimedia real-time service, comprising:

the proxy call session control function P-CSCF receives a service request sent by a first terminal, wherein the service request comprises: identification of multimedia real-time services;

the P-CSCF determines a media processing mode according to the service request and triggers a core network element to establish a first terminal special bearer;

and the P-CSCF sends the service request to a second terminal so that the second terminal establishes connection of the multimedia real-time service with the first terminal.

2. The interaction method of claim 1, wherein,

the service request is one of an INVITE message, a Re-INVITE message, or an UPDATE message.

3. The interaction method of claim 2, wherein,

the service request comprises session description protocol SDP information, and the SDP information comprises an identifier of the multimedia real-time service.

4. The interaction method of claim 1, wherein the media processing mode comprises: media proxy mode and media non-proxy mode.

5. The interaction method of claim 1, wherein the P-CSCF determining a media processing mode from the service request comprises:

the P-CSCF searches a corresponding media processing mode according to the identification of the multimedia real-time service;

and under the condition that the media processing mode corresponding to the identifier of the multimedia real-time service is found to be a media non-proxy mode, the media route of the multimedia real-time service does not pass through the P-CSCF.

6. The interaction method of claim 5, wherein,

and under the condition that the media processing mode corresponding to the identifier of the multimedia real-time service is found to be a media non-proxy mode, the P-CSCF keeps the address and the port of the first terminal in the service request unchanged.

7. The interaction method of claim 1, wherein the P-th CSCF sending the service request to a second terminal comprises:

the P-CSCF sends the service request to a service call session control function S-CSCF;

the S-CSCF forwards the service request to a control platform of the multimedia real-time service for processing according to the identifier of the multimedia real-time service;

the S-CSCF receives the processed service request returned by the control platform;

and the S-CSCF sends the processed service request to the second terminal.

8. The interaction method of claim 7, wherein the forwarding the service request to the control platform of the multimedia real-time service for processing comprises:

the control platform receives the service request;

the control platform modifies the address and port of the first terminal in the service request to the address and port of the media processing platform.

9. The interaction method of claim 7, wherein the forwarding the service request to the control platform of the multimedia real-time service for processing comprises:

the control platform sends a media resource application request to the media processing platform according to the service request;

The media processing platform performs resource allocation according to the media resource application request and sends an allocation response to the control platform;

and the control platform processes the service request according to the configuration response.

10. The interaction method of claim 9, wherein the control platform processing the service request according to the configuration response comprises:

and the control platform modifies the address and the port of the first terminal in the service request into the address and the port of the media processing platform under the condition that the configuration response is successful, and does not modify the address and the port of the first terminal in the service request under the condition that the configuration response is failed.

11. The interaction method of claim 1, further comprising:

the P-CSCF receives a service response sent by the second terminal;

the P-CSCF determines a media processing mode according to the service request corresponding to the service response and triggers a core network element to establish a second terminal special bearer;

the P-CSCF sends the service response to the S-CSCF.

12. The interaction method of claim 11, further comprising:

the S-CSCF sends the service response to a control platform of the multimedia real-time service for processing;

The S-CSCF receives the processed service response returned by the control platform;

and the S-CSCF sends the processed service response to the first terminal.

13. The interaction method of claim 12, wherein the S-CSCF sending the service response to the control platform of the multimedia real-time service for processing comprises:

the control platform receives the service response;

and the control platform modifies the address and the port of the second terminal in the service response into the address and the port of the media processing platform.

14. The interaction method of claim 1, further comprising:

and the first terminal generates the service request according to the category of the multimedia real-time service and sends the service request to the P-CSCF.

15. The interaction method of claim 14, wherein different categories of traffic correspond to different identifications.

16. The interaction method of claim 1, further comprising:

and the second terminal determines whether the multimedia real-time service is supported according to the service request, generates a service response, and returns the service response to the first terminal through a network.

17. The interaction method of claim 1, further comprising:

After the first terminal and the second terminal establish the connection of the multimedia real-time service, the first terminal and the second terminal interact with the multimedia real-time service through the media processing platform.

18. A proxy call session control function, P-CSCF, comprising:

the receiving module is configured to receive a service request sent by a first terminal, where the service request includes: identification of multimedia real-time services;

the strategy module is used for determining a media processing mode according to the service request and triggering a core network element to establish a first terminal special bearing;

and the sending module is used for sending the service request to a second terminal so that the second terminal and the first terminal can establish the connection of the multimedia real-time service.

19. An interactive system for multimedia real-time services, comprising: a proxy call session control function P-CSCF of claim 18; and

a first terminal, configured to send a service request to the P-CSCF;

and the second terminal is used for receiving the service request forwarded by the P-CSCF and establishing connection of the multimedia real-time service with the first terminal.

20. The interactive system of claim 19, further comprising:

And the service call session control function S-CSCF is used for receiving the service request sent by the P-CSCF, forwarding the service request to a control platform of the multimedia real-time service for processing according to the identifier of the multimedia real-time service, receiving the processed service request returned by the control platform, and sending the processed service request to the second terminal.

21. The interactive system of claim 20, further comprising:

and the control platform is used for receiving the service request sent by the S-CSCF and modifying the address and the port of the first terminal in the service request into the address and the port of the media processing platform.

22. The interactive system of claim 20, further comprising: the control platform and the media processing platform of the multimedia real-time service;

the control platform is used for sending a media resource application request to the media processing platform according to the service request, receiving a configuration response returned by the media processing platform, and processing the service request according to the configuration response;

the media processing platform is used for carrying out resource configuration according to the media resource application request and sending a configuration response to the control platform.

23. The interactive system of claim 22, wherein,

the control platform is used for modifying the address and the port of the first terminal in the service request into the address and the port of the media processing platform under the condition that the configuration response is successful, and not modifying the address and the port of the first terminal in the service request under the condition that the configuration response is failed.

24. The interactive system of claim 20, wherein,

the second terminal is further configured to determine whether to support the multimedia real-time service according to the service request, generate a service response, and send the service response to the P-CSCF;

the S-CSCF is also used for receiving the service response forwarded by the P-CSCF, sending the service response to a control platform of the multimedia real-time service for processing, receiving the processed service response returned by the control platform, and sending the processed service response to the first terminal.

25. The interactive system of claim 24, further comprising:

and the control platform is used for receiving the service response and modifying the address and the port of the second terminal in the service response into the address and the port of the media processing platform.

26. The interactive system of claim 21, further comprising:

and the media processing platform is used for processing the multimedia real-time service between the first terminal and the second terminal.

27. A communication apparatus, comprising:

a processor; and

a memory coupled to the processor for storing instructions that, when executed by the processor, cause the processor to perform the method of interaction of a multimedia real-time service as claimed in any one of claims 1 to 17.