WO2012163126A1

WO2012163126A1 - Multimedia ability negotiation method and device

Info

Publication number: WO2012163126A1
Application number: PCT/CN2012/072194
Authority: WO
Inventors: 李涛
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-06-03
Filing date: 2012-03-12
Publication date: 2012-12-06
Also published as: CN102811336A

Abstract

Disclosed are a multimedia ability negotiation method and device, relating to the field of communications. The technical solution is: the PM message sent to a second terminal by a first terminal carrying the priority of the media ability of the first terminal, and the second terminal determining the media ability used in the communication thereof with the first terminal according the priority of the media ability of the first terminal after receiving the PM message. By way of the present invention, it can be ensured that the two parties in communication can firstly adopt the media ability with high priority to make negotiation, increasing the success rate of negotiation and improving the universality of the MPC.

Description

Multimedia capability negotiation method and device

The present invention relates to the field of communications, and in particular to a multimedia capability negotiation method and apparatus. Background technique

Videophone is a multimedia communication system that integrates audio and video. It is no longer limited to ordinary voice telephone service, and truly realizes the dream of both people and people. With the advent of the third generation of 3G mobile communication era, videophones will be accepted by more and more people.

Most of the 3G video calls are based on the 3G-H.324M video call standard. The normal H.245 call process takes 5-8 seconds or more, which is difficult for users to accept. For this reason, there is a protocol for accelerating the H.245 process. MONA (media oriented negotiation acceleration) can shorten the call setup time of H.245 by one second.

There are three technologies in the MONA specification, namely SPC (Signaling Preconfigured Channel), MPC (Media Preconfigured Channels), ACP (Acelerated Connection Procedure), which is MPC. The negotiation speed is the fastest, but the existing MPC technology has the following disadvantages: The media capability attribute cannot be represented, so that with multiple media capabilities, the MPC cannot indicate the priority of multiple media capabilities, which may result in negotiation failure. Reduce the versatility of MPC. Summary of the invention

The technical problem to be solved by the present invention is to provide a multimedia capability negotiation method and apparatus, which can improve the versatility of the MPC.

In order to solve the above technical problem, the embodiments of the present invention provide the following technical solutions:

On the one hand, a multimedia capability negotiation method is provided, which is applied to media-oriented negotiation acceleration- The media pre-configured channel MONA-MPC system includes:

The first terminal constructs a first priority message, that is, a first PM (Priority Message) message according to a priority of its own media capability;

The first terminal sends the first PM message to the second terminal, and receives a second PM message returned by the second terminal, where the second PM message includes the second terminal according to the first terminal The priority of the media capability determines the media capabilities used by itself to communicate with the first terminal;

The first terminal determines a media channel that communicates with the second terminal according to the second PM message.

The first PM message carries a priority of the media capability of the first terminal, and the priority of the media capability includes a priority of receiving the media capability of the first terminal and a priority of sending the media capability.

The second PM message includes the sending media capability and the receiving media capability of the second terminal, and the determining, by the first terminal, the media channel that communicates with the second terminal according to the second PM message includes:

Determining, by the first terminal, whether it has the capability of transmitting media consistent with the capability of receiving media of the second terminal, and whether it has the capability of receiving media consistent with the capability of transmitting media of the second terminal;

When the first terminal is provided with a transmission media capability that is consistent with the received media capability of the second terminal, and has a receiving media capability that is consistent with the transmission media capability of the second terminal, the first terminal is pre-configured by the media. A channel communicates with the second terminal.

The embodiment of the present invention further provides a multimedia capability negotiation method, which is applied to a media-oriented negotiation acceleration-media pre-configuration channel M0NA-MPC system, including:

Receiving, by the second terminal, the first priority message that is sent by the first terminal, that is, the first PM message, where the first PM message carries the priority of the media capability of the first terminal; Determining, by the second terminal, a media capability used by the first terminal to communicate with the first terminal according to a priority of the media capability of the first terminal;

The second terminal sends the determined media capability to the first terminal by using a second PM message, so that the first terminal determines a media channel that communicates with the second terminal.

The priority of the media capability of the first terminal includes a priority of the receiving media capability of the first terminal and a priority of the sending media capability, and the second terminal determines the priority according to the media capability of the first terminal. The media capabilities used by itself to communicate with the first terminal include:

Determining, by the second terminal, a transmission media capability used by the first terminal to communicate with the first terminal according to a priority of the received media capability of the first terminal;

The second terminal determines, according to the priority of the sending media capability of the first terminal, the receiving media capability used by the first terminal to communicate with the first terminal.

The embodiment of the present invention further provides a multimedia capability negotiation device, which is applied to a media-oriented negotiation acceleration-media pre-configuration channel MONA-MPC system, including:

a first constructing module, configured to construct a first priority message, that is, a first PM message, according to a priority of a media capability of the first terminal;

a first interface module, configured to send the first PM message to the second terminal, and receive a second PM message returned by the second terminal, where the second PM message includes the second terminal according to the The media capability used by the terminal to communicate with the first terminal as determined by the priority of the media capabilities of the terminal;

And a first processing module, configured to determine, according to the second PM message, a media channel that the first terminal communicates with the second terminal.

The first configuration module is specifically configured to: fill a priority of a media capability of the first terminal into the first PM message, where a priority of the media capability includes a received media capability of the first terminal Priority and priority of sending media capabilities. The second PM message includes a sending media capability and a receiving media capability of the second terminal, where the first processing module includes:

a determining unit, configured to determine whether the first terminal has a sending media capability that is consistent with the receiving media capability of the second terminal, and whether the receiving media capability is consistent with the sending media capability of the second terminal;

a processing unit, configured to determine, when the first terminal has a sending media capability that is consistent with a receiving media capability of the second terminal, and has a receiving media capability that is consistent with a sending media capability of the second terminal A terminal communicates with the second terminal through a media pre-configuration channel.

a second interface module, configured to receive a first priority message sent by the first terminal, that is, a first PM message, where the first PM message carries a priority of a media capability of the first terminal;

a second processing module, configured to determine, according to a priority of a media capability of the first terminal, a media capability used by the second terminal to communicate with the first terminal;

a second constructing module, configured to construct a second according to the determined media capability of the second terminal

PM message;

The second interface module is further configured to send the second PM message to the first terminal, so that the first terminal determines a media channel that communicates with the second terminal.

The priority of the media capability of the first terminal includes a priority of receiving media capabilities of the first terminal and a priority of sending media capabilities.

The second processing module is specifically configured to determine, according to a priority of the received media capability of the first terminal, a sending media capability used by the second terminal to communicate with the first terminal, according to the sending by the first terminal The priority of the media capability determines the receiving media capabilities used by the second terminal to communicate with the first terminal. Embodiments of the present invention have the following beneficial effects:

In the above solution, the PM message sent by the first terminal to the second terminal carries the priority of the media capability of the first terminal, so that after receiving the PM message, the second terminal can be prioritized according to the media capability of the first terminal. The level determines the media capability used by the first terminal to communicate with the first terminal, thereby ensuring that both parties of the communication can preferentially use the higher-priority media capability for negotiation, increasing the negotiation success rate and improving the versatility of the MPC. DRAWINGS

1 is a schematic flowchart of a multimedia capability negotiation method according to an embodiment of the present invention;

FIG. 1 is a schematic diagram of another process of a multimedia capability negotiation method according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of a multimedia capability negotiation apparatus according to an embodiment of the present invention;

4 is another schematic structural diagram of a multimedia capability negotiation apparatus according to an embodiment of the present invention; FIG. 5 is a schematic diagram of a MONA-MPC session establishment process in the prior art;

FIG. 6 is a schematic flowchart of a session establishment process of a multimedia capability negotiation method according to an embodiment of the present invention. detailed description

The technical problems, the technical solutions, and the advantages of the embodiments of the present invention will become more apparent from the following detailed description. The first level leads to the failure of negotiation, reduces the versatility of the MPC, and provides a multimedia capability negotiation method and device, which can improve the versatility of the MPC.

FIG. 1 is a schematic flowchart of a method for negotiating a multimedia capability according to an embodiment of the present invention. As shown in FIG. 1 , the embodiment is applied to a media-oriented negotiation acceleration-media preconfigured channel. ) in the system, including:

Step 101: The first terminal constructs a first priority message according to a priority of its own media capability. First PM message;

Step 102: The first terminal sends a first PM message to the second terminal, and receives a second PM message returned by the second terminal, where the second PM message includes the second terminal determining, according to the priority of the media capability of the first terminal. Media capabilities for communicating with the first terminal;

Step 103: The first terminal determines, according to the second PM message, a media channel that communicates with the second terminal.

In the multimedia capability negotiation method of the embodiment of the present invention, the PM message sent by the first terminal to the second terminal carries the priority of the media capability of the first terminal, so that after receiving the PM message, the second terminal can be based on the first The priority of the media capability of the terminal determines the media capability used by the terminal to communicate with the first terminal, thereby ensuring that both parties of the communication can preferentially use the higher-priority media capability for negotiation, increasing the negotiation success rate and improving the generality of the MPC. Sex.

FIG. 1 is a schematic flowchart of another method for a multimedia capability negotiation method according to an embodiment of the present invention. As shown in FIG. 1 , the embodiment is applied to a MONA-MPC system, and includes:

Step 201: The second terminal receives the first priority message, that is, the first PM message sent by the first terminal, where the first PM message carries the priority of the media capability of the first terminal.

Step 202: The second terminal determines, according to the priority of the media capability of the first terminal, the media capability used by the first terminal to communicate with the first terminal.

Step 203: The second terminal sends the determined media capability to the first terminal by using the second PM message, so that the first terminal determines the media channel that communicates with the second terminal.

FIG. 3 is a schematic structural diagram of a multimedia capability negotiation apparatus according to an embodiment of the present invention, as shown in FIG. The present embodiment is applied to the MONA-MPC system, including:

The first constructing module 30 is configured to construct a first priority message, that is, a first message according to a priority of the media capability of the first terminal;

The first interface module 31 is configured to send the first ΡΜ message to the second terminal, and receive the second 返回 message returned by the second terminal, where the second 包括 message includes the priority of the second terminal according to the media capability of the first terminal Determining the media capabilities used by the first terminal to communicate with the first terminal;

The first processing module 32 is configured to determine, according to the second UI message, a media channel that the first terminal communicates with the second terminal.

The first constructing module 30 is specifically configured to fill the priority of the media capability of the first terminal into the first , message, where the priority of the media capability includes the priority of the receiving media capability of the first terminal and the priority of the sending media capability. level.

The second processing message includes the sending media capability and the receiving media capability of the second terminal, and the first processing module 32 includes:

a determining unit, configured to determine whether the first terminal has the sending media capability consistent with the receiving media capability of the second terminal, and whether the receiving media capability is consistent with the sending media capability of the second terminal;

a processing unit, configured to: when the first terminal has the sending media capability that is consistent with the receiving media capability of the second terminal, and has the receiving media capability consistent with the sending media capability of the second terminal, determining, by the first terminal, the media pre-configured channel The second terminal communicates.

In the multimedia capability negotiation apparatus of the embodiment of the present invention, the 消息 message sent by the first terminal to the second terminal carries the priority of the media capability of the first terminal, so that the second terminal can receive the first message after receiving the ΡΜ message. The priority of the media capability of the terminal determines the media capability used by the terminal to communicate with the first terminal, thereby ensuring that both parties of the communication can preferentially use the higher-priority media capability for negotiation, increasing the negotiation success rate and improving the generality of the MPC. Sex.

FIG. 4 is another schematic structural diagram of a multimedia capability negotiation apparatus according to an embodiment of the present invention, as shown in FIG. 4 As shown, the embodiment is applied to the MONA-MPC system, including:

The second interface module 40 is configured to receive a first priority message that is sent by the first terminal, that is, a first 消息 message, where the first ΡΜ message carries a priority of the media capability of the first terminal;

The second processing module 41 is configured to determine, according to a priority of the media capability of the first terminal, a media capability used by the second terminal to communicate with the first terminal;

The second constructing module 42 is configured to construct a second 消息 message according to the determined media capability of the second terminal;

The second interface module 40 is further configured to send the second UI message to the first terminal, so that the first terminal determines the media channel that communicates with the second terminal.

The priority of the media capability of the first terminal includes the priority of the receiving media capability of the first terminal and the priority of the sending media capability.

The second processing module 41 is specifically configured to determine, according to the priority of the received media capability of the first terminal, the sending media capability used by the second terminal to communicate with the first terminal, and determine the second terminal according to the priority of the sending media capability of the first terminal. The ability to receive media for communication with the first terminal.

The multimedia capability negotiation method of the present invention will be further described in detail below with reference to the accompanying drawings. FIG. 5 is a schematic diagram of a MONA-MPC session establishment process in the prior art, including: Step 501: A sender fills and sends a ΡΜ initialization message to a receiver.

After the CS (Client/Server, Client/Server) link is established, the sender fills in and sends a PM initialization message to the receiver; Step 502: If the sender supports and preferentially uses the MPC, send the media data of the payload in the Payload field in the PM message, and the data format is represented by MUX code.

In this way, when the sender has multiple media capabilities, the receiver can learn the media capabilities supported by the sender according to the media data, but cannot know the priority of each media capability;

Step 503: The sender receives the PM message of the receiver, where the PM message includes the sending media capability MPC-TX supported by the receiver and the receiving media capability MPC-RX;

Step 504: If the MPC-RX of the sender is the same as the MPC-TX of the receiver, and the MPC-TX of the sender is the same as the MPC-TX of the receiver, the sender and the receiver can communicate through the MPC.

For the receiving party, parsing the received PDU (Protocol Data Unit) of the pre-configured media channel, and comparing whether the media data meets its own MPC-RX, if the data in the received PDU does not satisfy its own MPC-RX, then discard all data. If it is satisfied, it will be decoded and displayed.

For the sender, after receiving the PM message of the receiver, it can judge whether the pre-configured channel established by itself is correct according to the MPC-RX of the other party, and if it is wrong, stop transmitting, and then use the appropriate media channel to transmit.

When the terminal has multiple media capabilities, the MONA-MPC session establishment process in the prior art cannot represent the media capability attribute, so that when the terminal has multiple media capabilities, the priority of multiple media capabilities cannot be indicated, and thus cannot be guaranteed. The establishment of communication by the two terminals with the highest priority media capability may lead to the failure of media negotiation.

FIG. 6 is a schematic diagram of a session establishment process of the multimedia capability negotiation method according to the present invention. In this embodiment, the called terminal is not required to represent the media capability attribute in the PM message, but the MPC versatility can be improved for both parties. The called terminal may also indicate the media capability attribute in the PM message. The following describes the multimedia capability negotiation method of the present invention by taking the media terminal attribute in the PM message as an example: Step 601: The calling terminal establishes a media priority table, determines a codec symmetric attribute table, and a priority of multiple media capabilities of the codec, including receiving a media capability priority and a sending media capability priority.

After the CS link is established, the calling terminal establishes a media priority table to determine the codec symmetric attribute table and the priority of its various media capabilities. For example, the receiving media capabilities supported by the calling terminal include A and B, where A has the highest priority and B has the second priority; the sending media capabilities supported by the calling terminal include A, B, and C, where A has the highest priority. C has the second priority, and B has the lowest priority;

Step 602: If the calling terminal supports and preferentially uses the MPC, construct a PM message, where the media capability and the corresponding priority and codec attributes are added in the Payload field of the PM message;

Specifically, a bit may be reserved in the PM message or a new field may be defined to represent the above information. The highest four digits of the first byte in the Payload may be used to indicate whether the Payload field indicates media data or media capability. Related attribute

Step 603: The calling terminal starts the MPC process to send a PM message to the called terminal. Step 604: The called terminal receives the PM message of the calling terminal, and returns a response PM message to the calling terminal, where the responding PM message includes the PM message. Calling the media capabilities of the terminal;

The called terminal determines the media capabilities represented in the responding PM message according to the priority of the media capabilities supported by the calling terminal and the media capabilities of the calling terminal. Including the following situations:

1. The codec of the calling terminal is not symmetric, and can simultaneously satisfy (1) the ability of the transmitted media supported by the called terminal to intersect with the receiving media capability supported by the calling terminal and (2) the receiving media capability supported by the called terminal. Intersect with the ability of the sending media supported by the calling terminal;

For example, the called terminal knows that the receiving media capabilities supported by the calling terminal are A and B, where A has the highest priority, B has the lower priority, and the called terminal supports the sending media capabilities including A and B, and the called terminal Representing its own sending media capability A in the responding PM message; The terminal knows that the sending media capabilities supported by the calling terminal are A, B, and C, where A has the highest priority, C has the lower priority, and B has the lowest priority, and the receiving media supported by the called terminal only includes B and C, the called terminal indicates its own receiving media capability C in the responding PM message;

2. The codec of the calling terminal is symmetric, and can simultaneously satisfy (1) the ability of the transmitted media supported by the called terminal to intersect with the receiving media capability supported by the calling terminal and (2) the receiving media capability supported by the called terminal. Intersect with the ability of the sending media supported by the calling terminal;

For example, the called terminal knows that the codec of the calling terminal is symmetric, and the supported receiving media capabilities are A and B, where A has the highest priority, B has the second priority, and the called terminal supports the transmission medium capability only. B, the called terminal indicates its own transmission media capability B in the responding PM message; because the codec of the calling terminal is symmetric, the sending media capability supported by the calling terminal is also A and B, where A is prioritized The highest level, B's priority is second, and the received media capability supported by the called terminal only includes B, then the called terminal indicates its own receiving media capability B in the responding PM message;

3. It is not possible to simultaneously satisfy (1) that the transmitted media capability supported by the called terminal has an intersection with the receiving media capability supported by the calling terminal, and (2) the receiving media capability supported by the called terminal and the transmitting media capability supported by the calling terminal have Intersection

For example, the called terminal knows that the receiving media capabilities supported by the calling terminal are A and B, where A has the highest priority, B has the second priority, and the called terminal supports the transmitting media capability only C, then the called terminal responds. The PM message indicates its own transmission media capability C; if the called terminal knows that the transmission media capabilities supported by the calling terminal include A, B, and C, where A has the highest priority, C has the lower priority, and B has the priority. The lowest, and the received media capability supported by the called terminal only includes D, the called terminal indicates its own receiving media capability D in the responding PM message;

Step 605: The calling terminal receives the PM message responded by the called terminal, and determines a media channel that communicates with the called terminal.

If the sending media capability of the calling terminal includes the receiving media capability returned by the called terminal, and At the same time, the receiving media capability of the calling terminal includes the sending media capability returned by the called terminal, indicating that the calling terminal and the called terminal can perform a normal call through the previously established MPC, and the calling terminal and the called terminal negotiate successfully. .

If the receiving media capability of the calling terminal does not include the receiving media capability returned by the called terminal, or the receiving media capability of the calling terminal does not include the sending media capability returned by the called terminal, the calling terminal and the called terminal do not The normal call can be made through the previously established MPC, and the calling terminal needs to reselect other suitable media channels for communication.

When the called terminal can only represent the media data in the PM message, the calling terminal determines whether it can parse the audio and video data in the PM message returned by the called terminal, and if it can be parsed, the calling terminal A normal call can be made between the called terminal and the previously established MPC. If it cannot be resolved, the calling terminal discards the PM message and reselects other suitable media channels for communication.

The multimedia negotiation method of the present invention enables the called terminal to select the media capability and the calling party with high priority among the calling terminals in the media capabilities supported by the calling terminal by carrying the priorities of the multiple media capabilities in the PM message of the calling terminal. The terminal negotiates; and if the codec of the calling terminal is symmetric, the calling terminal PM message can also indicate multiple media capabilities, expands the range of the selected terminal's ability to select media, improves the success of media negotiation, and expands The versatility of MPC.

Many of the functional components described in this specification are referred to as modules to more particularly emphasize the independence of their implementation.

In an embodiment of the invention, the modules may be implemented in software for execution by various types of processors. For example, an identified executable code module can comprise one or more physical or logical blocks of computer instructions, which can be constructed, for example, as an object, procedure, or function. Nonetheless, the executable code of the identified modules need not be physically located together, but may include different instructions stored in different bits. When these instructions are logically combined, they form a module and implement the specifications of the module. purpose. In fact, the executable code module can be a single instruction or a number of instructions, and can even be distributed across multiple different code segments, distributed among different programs, and distributed across multiple memory devices. Likewise, operational data may be identified within the module and may be implemented in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed at different locations (including on different storage devices), and may at least partially exist as an electronic signal on a system or network.

When the module can be implemented by software, considering the level of the existing hardware process, the module can be implemented in software. Without considering the cost, a person skilled in the art can construct a corresponding hardware circuit to implement the corresponding function. The hardware circuitry includes conventional Very Large Scale Integration (VLSI) circuits or gate arrays as well as existing semiconductors such as logic chips, transistors, or other discrete components. Modules can also be implemented with programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices, and the like.

In the method embodiments of the present invention, the sequence numbers of the steps are not used to limit the sequence of the steps. For those skilled in the art, the steps of the steps are changed without any creative work. It is also within the scope of the invention.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention. INDUSTRIAL APPLICABILITY The technical solution provided by the present invention can ensure that both parties of communication can preferentially use higher-priority media capabilities for negotiation, increase the negotiation success rate, and improve the versatility of the MPC.

Claims

Claim

A multimedia capability negotiation method for media-oriented negotiation acceleration - media pre-configuration channel In the MONA-MPC system, the method includes:

The first terminal constructs a first priority message, that is, a first PM message according to a priority of its own media capability;

2. The multimedia capability negotiation method according to claim 1, wherein

The multimedia capability negotiation method according to claim 2, wherein the second PM message includes a sending media capability and a receiving media capability of the second terminal, where the first terminal determines according to the second PM message. The media channel that communicates with the second terminal includes:

4. A multimedia capability negotiation method for media-oriented negotiation acceleration-media pre-configuration In the channel MONA-MPC system, the method includes:

The second terminal receives the first priority message, that is, the first PM message sent by the first terminal, where the first PM message carries the priority of the media capability of the first terminal;

Determining, by the second terminal, a media capability used by the first terminal to communicate with the first terminal according to a priority of the media capability of the first terminal;

The multimedia capability negotiation method according to claim 4, wherein the priority of the media capability of the first terminal includes a priority of a receiving media capability of the first terminal and a priority of a sending media capability, where the second Determining, by the terminal according to the priority of the media capability of the first terminal, the media capability used by the terminal to communicate with the first terminal includes:

6. A multimedia capability negotiation device for media-oriented negotiation acceleration - media pre-configuration channel MONA-MPC system, wherein:

The multimedia capability negotiation device according to claim 6, wherein the first configuration module is configured to fill a priority of a media capability of the first terminal into the first PM message, the media The priority of the capability includes the priority of the receiving media capability of the first terminal and the priority of the transmitting media capability.

The multimedia capability negotiation apparatus according to claim 7, wherein the second PM message includes a sending media capability and a receiving media capability of the second terminal, where the first processing module includes:

9. A multimedia capability negotiation device for media-oriented negotiation acceleration - media pre-configuration channel In the MONA-MPC system, the device includes:

PM message;

10. The multimedia capability negotiation device according to claim 9, wherein the first terminal The priority of the media capability of the terminal includes the priority of the receiving media capability of the first terminal and the priority of the sending media capability.

The second processing module is specifically configured to determine, according to a priority of the received media capability of the first terminal, a sending media capability used by the second terminal to communicate with the first terminal, according to the sending by the first terminal The priority of the media capability determines the receiving media capabilities used by the second terminal to communicate with the first terminal.