CN106506319B - The transmission method and transfer gateway of service quality session parameter in webpage real time communication - Google Patents

Abstract

The present invention provides the transmission methods and transfer gateway of service quality session parameter in a kind of webpage real time communication.The transmission method, applied to a webpage real time communication WebRTC transfer gateway, and WebRTC transfer gateway is arranged independently of Proxy Call Session Control Function unit/Session Border Controller P-CSCF/SBC, wherein, the transmission method includes: the session information for receiving the WebRTC business that WebRTC terminal is sent, it wherein, include the session parameter of WebRTC business in the session information；The session parameter in the session information is extracted, and is sent to Policy and Charging Rules Function PCRF, so that PCRF carries out the formulation of service quality control parameter according to the session parameter, to guarantee the service quality of the WebRTC business of the WebRTC terminal.When above scheme, WebRTC transfer gateway and P-CSCF/SBC are provided separately, when carrying out WebRTC business, WebRTC transfer gateway can be directly realized by the communication with PCRF, ensure that WebRTC terminal to the service quality between WebRTC transfer gateway with this.

Description

Transmission method and conversion gateway for quality of service session parameters in web page real-time communication

technical field

The invention relates to the technical field of data services, in particular to a method for transmitting session parameters of quality of service in web page real-time communication and a conversion gateway.

Background technique

Web Real-Time Communication (WebRTC for short) is a real-time audio and video communication technology based on a web browser. It integrates the basic media capabilities required for real-time communication in the browser and can be easily implemented without plug-ins Audio and video functions. Therefore, the combination of the WebRTC technology and the IP Multimedia Subsystem (IP Multimedia Subsystem, IMS for short) can expand the IMS client form, optimize the user experience, and help enrich the IMS service form.

To implement WebRTC terminal access to IMS, a WebRTC conversion gateway needs to be introduced. The WebRTC conversion gateway will mainly complete signaling conversion, such as: Hypertext Transfer Protocol/Web Socket (HTTP/WebSocket) and Session Initiation Protocol (Session Initiation Protocol, Conversion between SIP for short; media conversion, for example: conversion between Secure Real-time Transport Protocol (SRTP) and Real-time Transport Protocol (RTP).

As shown in Figure 1, when the WebRTC conversion gateway is co-located with the Proxy Call Session Control Function/Session Border Controller (P-CSCF/SBC), the P-CSCF/SBC sends the Send information obtained from Session Initiation Protocol/Session Description Protocol (SIP/Session Description Protocol, SDP for short) session establishment signaling with the Policy and Charging Rules Function (PCRF for short). This information enables PCRF to form authorized IP QoS data and appropriate policy control rules. These data and rules are further transmitted to Policy and Charging Enforcement Function (PCEF), usually PCEF evolves with system architecture Gateway (System Architecture Evolution Gateway, SAE-GW for short) is co-located. Based on these data and rules, PCEF will establish appropriate gates to ensure the quality of service (Quality of Service, QoS for short) from the WebRTC terminal to the P-CSCF/SBC.

In the existing solution, the existing Policy and Charging Control (PCC) mechanism can be used to ensure QoS. This mechanism can authorize and control the bearer service flow to be used by the IMS media service flow. Based on the SDP parameters negotiated in the IMS session, it can control the quality of service, the source/destination address of the IMS media service flow, and the start and end of the media service flow. function to stop time.

When the WebRTC conversion gateway is separated from the P-CSCF/SBC, the WebRTC conversion gateway function is pushed to the user side and deployed on the side closer to the WebRTC terminal. The WebRTC terminal and the WebRTC conversion gateway are connected through the W1 reference point; The WebRTC conversion gateway and the SBC transmit SIP signaling such as registration and session control through the Gm reference point.

Under the existing mechanism, QoS can be guaranteed between the WebRTC conversion gateway and the SBC based on the PCC mechanism, but it is difficult to guarantee QoS between the WebRTC terminal and the WebRTC conversion gateway.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a transmission method and a conversion gateway for quality of service session parameters in web page real-time communication, which are used to solve the problem of switching between the WebRTC terminal and the WebRTC conversion gateway when the WebRTC conversion gateway and the P-CSCF/SBC are separated. QoS is difficult to guarantee.

In order to solve the above technical problems, the embodiment of the present invention provides a method for transmitting QoS session parameters in web page real-time communication, which is applied to a web page real-time communication WebRTC conversion gateway, and the WebRTC conversion gateway is independent of the proxy call session control functional unit/session boundary Controller P-CSCF/SBC settings, wherein the delivery method includes:

Receive session information of the WebRTC service sent by the WebRTC terminal, wherein the session information includes session parameters of the WebRTC service;

The session parameters in the session information are extracted and sent to the policy and charging rules functional unit PCRF, so that the PCRF formulates service quality control parameters according to the session parameters, so as to ensure the service quality of the WebRTC service of the WebRTC terminal.

Further, the delivery method also includes:

Send an indication message carrying a preset identifier to the P-CSCF/SBC, where the preset identifier in the instruction message is used to instruct the P-CSCF/SBC to refrain from sending the Session information of the WebRTC service.

Further, the indication message is a session initiation protocol SIP message.

Further, the step of extracting the session parameter in the session information and sending it to the policy and charging rules functional unit PCRF is as follows:

The session parameters in the session information are extracted, and the session parameters are sent to the PCRF through the Rx interface between the WebRTC conversion gateway and the PCRF.

Further, the step of extracting the session parameter in the session information and sending it to the policy and charging rules functional unit PCRF is as follows:

The session parameters are sent to the PCRF by calling the application program API interface function provided by the PCRF.

An embodiment of the present invention provides a WebRTC conversion gateway, wherein the WebRTC conversion gateway is set independently of the proxy call session control functional unit/session border controller P-CSCF/SBC, and the WebRTC conversion gateway includes:

A receiving module, configured to receive session information of the WebRTC service sent by the WebRTC terminal, wherein the session information includes session parameters of the WebRTC service;

The extracting and sending module is used to extract the session parameters in the session information, and send them to the policy and charging rules functional unit PCRF, so that the PCRF formulates the quality of service control parameters according to the session parameters to ensure the WebRTC terminal. Quality of service for WebRTC services.

Further, the WebRTC conversion gateway also includes:

The sending module is configured to send an indication message carrying a preset identifier to the P-CSCF/SBC, where the preset identifier in the instruction message is used to instruct the P-CSCF/SBC to suppress the communication between the P-CSCF/SBC and the PCRF. The Rx interface sends the session information of the WebRTC service.

Further, the indication message is a session initiation protocol SIP message.

Further, the WebRTC conversion gateway is connected to the PCRF through an Rx interface, wherein the extracting and sending module is specifically:

The session parameters in the session information are extracted, and the session parameters are sent to the PCRF through the Rx interface between the WebRTC conversion gateway and the PCRF.

Further, the extracting and sending module is specifically:

The session parameters are sent to the PCRF by calling the application program API interface function provided by the PCRF.

The beneficial effects of the present invention are:

In the above solution, when the WebRTC conversion gateway is set separately from the P-CSCF/SBC, when the WebRTC service is performed, the WebRTC conversion gateway can directly communicate with the PCRF, thereby ensuring the QoS between the WebRTC terminal and the WebRTC conversion gateway.

Description of drawings

Fig. 1 shows the schematic diagram of the architecture of accessing the IMS system when the WebRTC conversion gateway and the P-CSCF/SBC are co-located;

Fig. 2 shows the overall flow chart of the delivery method according to the embodiment of the present invention;

3 shows a schematic diagram of the architecture of accessing the IMS system when the WebRTC conversion gateway and the P-CSCF/SBC are separately set up in an embodiment of the present invention;

FIG. 4 shows a schematic diagram of a module of the WebRTC conversion gateway according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Aiming at the problem that the QoS between the WebRTC terminal and the WebRTC conversion gateway is difficult to guarantee when the existing WebRTC conversion gateway and the P-CSCF/SBC are separated, the present invention provides a transmission method and a conversion gateway for quality of service session parameters in web page real-time communication .

Example 1

As shown in FIG. 2 , the method for transmitting quality of service session parameters in web page real-time communication according to Embodiment 1 of the present invention is applied to a web page real-time communication WebRTC conversion gateway, wherein the transmission method includes:

Step 100, receiving session information of the WebRTC service sent by the WebRTC terminal, wherein the session information includes session parameters of the WebRTC service;

Step 200: Extract the session parameters in the session information, and send them to the policy and charging rules functional unit PCRF, so that the PCRF formulates service quality control parameters according to the session parameters, so as to ensure the WebRTC service of the WebRTC terminal. service quality.

It should be noted that the WebRTC service mentioned in the present invention mainly refers to the WebRTC audio and video call service.

It should be noted that when a WebRTC terminal performs a WebRTC service, it needs to transmit the session information to ensure the smooth progress of the WebRTC service to the WebRTC conversion gateway in the format of JavaScript Object Notation/Extensible Markup Language (JSON/XML) through the Websocket/HTTP protocol. , the WebRTC conversion gateway extracts session parameters from the received session information. The session parameters usually include information such as source address, destination address, port number, and dedicated bearer bandwidth. The session parameters enable PCRF to form authorized IP QoS data and The policy control rule for the WebRTC service, the IP QoS data and the policy control rule for the WebRTC service are service quality control parameters for ensuring the QoS of the terminal.

It should be noted that this transfer method is applied to the situation where the WebRTC conversion gateway and the P-CSCF/SBC are separated, and the session parameters of the WebRTC terminal in the WebRTC service are directly transferred to the PCRF through the WebRTC conversion gateway, so that the PCRF formulates QoS according to the session parameters. Control parameters to ensure the QoS between the WebRTC terminal and the WebRTC conversion gateway.

Embodiment 2

When the WebRTC conversion gateway is separated from the P-CSCF/SBC, the P-CSCF/SBC itself is provided with an Rx interface, and the P-CSCF/SBC communicates with the PCRF through its own Rx interface. The WebRTC conversion gateway can guarantee the QoS. If at this time, the P-CSCF/SBC also communicates with the PCRF through its own Rx interface, so that the PCRF can process the information of both parties at the same time, the QoS of the WebRTC terminal will be inaccurate, so the present invention implements In Example 2, on the basis of Embodiment 1, the delivery method further includes:

Send an indication message carrying a preset identifier to the P-CSCF/SBC, where the preset identifier in the instruction message is used to instruct the P-CSCF/SBC to refrain from sending the Session information of the WebRTC service.

In the second embodiment of the present invention, when the WebRTC terminal performs the WebRTC service, it only communicates with the PCRF through the WebRTC conversion gateway, while the P-CSCF/SBC does not communicate with the PCRF through the Rx interface, so that the PCRF only communicates with the PCRF according to the session parameters sent by the WebRTC conversion gateway. The QoS control parameters are formulated to ensure the accuracy of the QoS between the WebRTC terminal and the WebRTC conversion gateway.

It should be noted that the WebRTC conversion gateway and the P-CSCF/SBC usually communicate through SIP messages. Therefore, the above indication message is a SIP message, which is carried in the SIP message received by the P-CSCF/SBC and sent by the WebRTC conversion gateway. When the P-CSCF/SBC is instructed to no longer communicate with the PCRF through the Rx interface, the P-CSCF/SBC invokes its own control mechanism to block the Rx interface communication between the P-CSCF/SBC and the PCRF.

Embodiment 3

The delivery method of the third embodiment of the present invention includes:

Step 100, receiving session information of the WebRTC service sent by the WebRTC terminal, wherein the session information includes session parameters of the WebRTC service;

Step 200: Extract the session parameters in the session information, and send them to the policy and charging rules functional unit PCRF, so that the PCRF formulates service quality control parameters according to the session parameters, so as to ensure the WebRTC service of the WebRTC terminal. service quality.

Wherein, when sending the session parameters to the PCRF, the delivery method further includes: sending an indication message carrying a preset identifier to the P-CSCF/SBC, where the preset identifier in the instruction message is used to indicate the P-CSCF/SBC The session information of the WebRTC service is suppressed from being sent through the Rx interface between the P-CSCF/SBC and the PCRF.

A transmission method of session parameters provided by the third embodiment of the present invention is: sending the session parameters to the PCRF through the Rx interface between the WebRTC conversion gateway and the PCRF.

It should be noted that this transfer method increases the Rx interface between the WebRTC conversion gateway and the PCRF, as shown in Figure 3 (only the part related to the present invention in Figure 3 is described in the present invention, and the implementation of other parts is the same as that of the present invention). The existing method is the same, and will not be described here), when the WebRTC terminal performs the WebRTC service, the session information to ensure the smooth progress of the WebRTC service is transmitted to the WebRTC conversion gateway in the format of JSON/XML through the Websocket/HTTP protocol; WebRTC conversion The gateway extracts the session parameters from the received session information, and then sends them to PCRF through its own Rx interface. It should be noted that when sending a message carrying session parameters to PCRF through the Rx interface, the message also carries the WebRTC conversion. The special identifier of the gateway, after PCRF receives the message carrying the special identifier of the WebRTC conversion gateway, it forms authorized IP QoS data and policy control rules for this WebRTC service according to the message (because PCRF obtains IP QoS according to the message transmitted by the WebRTC conversion gateway. The method of data and policy control rules for this WebRTC service is well known to those skilled in the art, and will not be described in detail here); then PCRF will further transmit the obtained data and rules to PCEF (not shown in FIG. 3 ). out), PCEF establishes appropriate gates based on these data and rules to ensure the QoS between the WebRTC terminal and the WebRTC conversion gateway; at the same time, the SIP message sent by the WebRTC conversion gateway to the P-CSCF/SBC carries the Special identification information, which indicates that the P-CSCF/SBC no longer transmits signaling through the Rx interface with the PCRF.

It should also be noted that when the terminal performs IMS-based voice service (VoLTE) or IMS service, the existing PCC mechanism can be normally applied, in which the P-CSCF/SBC interacts with the PCRF through the Rx interface, and transmits information about IP access. Network (IP-CAN) user plane dynamic policy/charging information, because this process does not involve the WebRTC conversion gateway, so the Rx interface between the WebRTC conversion gateway and PCRF does not work.

It should be noted that the above-mentioned third embodiment optimizes the existing PCC mechanism, so that the data transfer between the WebRTC conversion gateway and the PCRF is directly carried out when the WebRTC service is performed, thereby ensuring the connection between the WebRTC conversion gateway and the WebRTC terminal. QoS in between.

Embodiment 4

The delivery method of the fourth embodiment of the present invention includes:

Step 100, receiving session information of the WebRTC service sent by the WebRTC terminal, wherein the session information includes session parameters of the WebRTC service;

Step 200: Extract the session parameters in the session information, and send them to the policy and charging rules functional unit PCRF, so that the PCRF formulates service quality control parameters according to the session parameters, so as to ensure the WebRTC service of the WebRTC terminal. service quality.

Wherein, when sending the session parameters to the PCRF, the delivery method further includes: sending an indication message carrying a preset identifier to the P-CSCF/SBC, where the preset identifier in the instruction message is used to indicate the P-CSCF/SBC The session information of the WebRTC service is suppressed from being sent through the Rx interface between the P-CSCF/SBC and the PCRF.

A transmission method of session parameters provided by the fourth embodiment of the present invention is: by calling an application program API interface function provided by PCRF, the session parameters are sent to the PCRF.

It should be noted that, in the fourth embodiment, the WebRTC terminal is carrying out the WebRTC service, and the session information that ensures the smooth progress of the WebRTC service is transmitted to the WebRTC conversion gateway in JSON/XML format through the Websocket/HTTP protocol; The session parameters are extracted from the session information, and then the session parameters and data related to ensuring QoS quality are encapsulated into the API interface functions provided by PCRF, and the session parameters are passed to PCRF in the form of interface functions, and then PCRF parses the received interface. function to obtain session parameters and related data to form authorized IPQoS data and policy control rules for the WebRTC service; then PCRF further transmits the obtained data and rules to PCEF, and PCEF establishes appropriate gates based on these data and rules In order to ensure the QoS between the WebRTC terminal and the WebRTC conversion gateway; at the same time, the SIP message sent by the WebRTC conversion gateway to the P-CSCF/SBC carries special identification information, which indicates that the P-CSCF/SBC The SBC no longer transmits signaling through the Rx interface with the PCRF.

Embodiment 5

Corresponding to the above-mentioned delivery method, as shown in FIG. 4 , Embodiment 5 of the present invention provides a WebRTC conversion gateway, and the WebRTC conversion gateway is set independently of the proxy call session control functional unit/session border controller P-CSCF/SBC, wherein, The WebRTC Transformation Gateway includes:

A receiving module 10, configured to receive session information of the WebRTC service sent by the WebRTC terminal, wherein the session information includes session parameters of the WebRTC service;

The extracting and sending module 20 is used to extract the session parameters in the session information, and send them to the policy and charging rules functional unit PCRF, so that the PCRF formulates policy control rules according to the session parameters, so as to ensure the WebRTC terminal's Quality of service for WebRTC services.

Specifically, the WebRTC conversion gateway further includes:

The sending module 30 is configured to send an indication message carrying a preset identifier to the P-CSCF/SBC, where the preset identifier in the instruction message is used to instruct the P-CSCF/SBC to suppress the passage between the P-CSCF/SBC and the PCRF The Rx interface sends the session information of the WebRTC service.

Wherein, the indication message is a session initiation protocol SIP message.

When the WebRTC conversion gateway is connected to the PCRF through an Rx interface, the extracting and sending module 20 is specifically:

The session parameters in the session information are extracted, and the session parameters are sent to the PCRF through the Rx interface between the WebRTC conversion gateway and the PCRF.

When the WebRTC conversion gateway is not connected to the PCRF through the Rx interface, the extracting and sending module 20 is specifically:

The session parameters are sent to the PCRF by calling the application program API interface function provided by the PCRF.

It should be noted that, in the above-mentioned embodiment of the present invention, when the WebRTC conversion gateway and the P-CSCF/SBC are set up separately, when the terminal performs the WebRTC service, the WebRTC conversion gateway is controlled to communicate directly with the PCRF, which optimizes the existing PCC mechanism. This method effectively ensures the QoS between the WebRTC terminal and the WebRTC conversion gateway.

The above are the preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications are also included in the present invention. within the scope of protection of the invention.

Claims (10)

1. the transmission method of service quality session parameter in a kind of webpage real time communication is applied to a webpage real time communication WebRTC Transfer gateway, and WebRTC transfer gateway is independently of Proxy Call Session Control Function unit/Session Border Controller P-CSCF/ SBC setting, which is characterized in that the transmission method includes:

Receive the session information for the WebRTC business that WebRTC terminal is sent, wherein include WebRTC in the session information The session parameter of business；

The session parameter in the session information is extracted, and is sent to Policy and Charging Rules Function PCRF, so that PCRF The formulation of service quality control parameter is carried out, according to the session parameter to guarantee the WebRTC business of the WebRTC terminal Service quality.

2. transmission method according to claim 1, which is characterized in that the transmission method further include:

It sends and carries the instruction message of a default mark to P-CSCF/SBC, the default mark in the instruction message is for referring to Show that P-CSCF/SBC inhibits the session information that the WebRTC business is sent by the Rx interface between P-CSCF/SBC and PCRF.

3. transmission method according to claim 2, which is characterized in that the instruction message is that session initiation protocol SIP disappears Breath.

4. transmission method according to claim 1-3, which is characterized in that described to extract in the session information Session parameter, and the step of being sent to Policy and Charging Rules Function PCRF specifically:

The session parameter in the session information is extracted, and the session parameter is passed through between WebRTC transfer gateway and PCRF Rx interface be sent to the PCRF.

5. transmission method according to claim 1-3, which is characterized in that described to extract in the session information Session parameter, and the step of being sent to Policy and Charging Rules Function PCRF specifically:

Pass through the application program api interface function for calling PCRF to provide, it will words parameter is sent to the PCRF.

6. a kind of WebRTC transfer gateway, which is characterized in that WebRTC transfer gateway is independently of Proxy Call Session Control Function Unit/Session Border Controller P-CSCF/SBC setting, the WebRTC transfer gateway include:

Receiving module, the session information of the WebRTC business for receiving the transmission of WebRTC terminal, wherein in the session information It include the session parameter of WebRTC business；

Sending module is extracted, for extracting the session parameter in the session information, and is sent to strategy and charging rule functions Unit PCRF, so that PCRF carries out the formulation of service quality control parameter according to the session parameter, to guarantee the WebRTC The service quality of the WebRTC business of terminal.

7. WebRTC transfer gateway according to claim 6, which is characterized in that the WebRTC transfer gateway further include:

Sending module carries the instruction message of a default mark to P-CSCF/SBC, in the instruction message for sending Default mark is used to indicate P-CSCF/SBC and inhibits to send the WebRTC by the Rx interface between P-CSCF/SBC and PCRF The session information of business.

8. WebRTC transfer gateway according to claim 7, which is characterized in that the instruction message is session initiation protocol Sip message.

9. according to the described in any item WebRTC transfer gateways of claim 6-8, which is characterized in that the WebRTC transfer gateway It is connect by a Rx interface with the PCRF, wherein the extraction sending module specifically:

The session parameter in the session information is extracted, and the session parameter is passed through between WebRTC transfer gateway and PCRF Rx interface be sent to the PCRF.

10. according to the described in any item WebRTC transfer gateways of claim 6-8, which is characterized in that the extraction sending module Specifically:

Pass through the application program api interface function for calling PCRF to provide, it will words parameter is sent to the PCRF.