WO2015062454A1

WO2015062454A1 - Audio and video call method, device and system

Info

Publication number: WO2015062454A1
Application number: PCT/CN2014/089515
Authority: WO
Inventors: 段志阳; 冯斌; 岳东升; 任斌
Original assignee: 华为技术有限公司
Priority date: 2013-10-28
Filing date: 2014-10-25
Publication date: 2015-05-07
Also published as: CN104580119B; CN104580119A

Abstract

The present invention provides an audio and video call method. In the provided method, an access network terminal device can switch among multiple terminals with different capabilities to implement an audio and video call. The method comprises: an access network terminal device receiving a switching request of a first terminal; sending a call request to a second terminal, wherein the call request carries an IP address and port information of remote media; the access network terminal device receiving an answering message of the second terminal, and setting an IP address of user-side media in a Real-Time Transport Protocol (RTP) agent to an IP address of the second terminal; forwarding a media update request from the second terminal to a third terminal so as to add a video; the access network terminal device acting as an agent of an audio and video call between the second terminal and the third terminal after the third terminal accepts the media update request.

Description

Audio and video call method, device and system

The present application claims priority to Chinese Patent Application No. 201310516170.0, entitled "Audio and Video Calling Method, Apparatus and System", filed on October 28, 2013, the entire contents of which is incorporated herein by reference. in.

Technical field

The present invention relates to the field of communications, and in particular, to an audio and video call method, device, and system.

Background technique

The current development of video communication is not very fast. The main reason is that mobile video communication costs are high and the experience is general. However, operators' fixed terminal audio and video services are mainly represented by IP audio and video phones, because fixed terminal audio and video services are based on wired terminals. The user cannot move at will, and it is inconvenient to use. Based on the above reasons, video communication has not been effectively developed.

With the rapid development of FTTH (Fiber to the Home) networks, high-quality bandwidth resources have been provided, which can provide bandwidth guarantee for the development of video communication. At the same time, with the popularity of personal mobile terminals represented by PAD and smart phones, it also provides a good guarantee for the development of video communication. In this case, how to use the popular personal mobile terminal to develop audio and video services on the FTTH network has become an urgent problem to be solved at this stage.

Summary of the invention

Embodiments of the present invention provide an audio and video call method, device, and system. The provided audio and video call method, device, and system can perform audio and video calls on a FTTH network using a home terminal.

An embodiment of the present invention provides an audio and video call method, including an access network terminal device, a first terminal, and a second terminal; the first terminal supports an audio service, and the second terminal supports an audio and video service; The network terminal device is connected to the third terminal by using the IP multimedia subsystem, and the first terminal and the third terminal are in an audio call state; the method includes:

Receiving, by the access network terminal device, a handover request of the first terminal;

The access network terminal device sends a call request to the second terminal, where the call request carries an IP address of the remote media and port information;

The access network terminal device receives the answer message of the second terminal, and sets an IP address of the user side media in the real-time transport protocol RTP proxy to an IP address of the second terminal device;

The access network terminal device forwards an update media request from the second terminal to the third terminal to add a video;

The access network terminal device proxies an audio-video call between the second terminal and the third terminal after the third terminal accepts the update media request.

An embodiment of the present invention provides an access network terminal device, where the access network terminal device is registered with a plurality of terminals including a first terminal and a second terminal; the first terminal supports an audio service, and the second terminal The terminal supports the audio and video service; the access network terminal device is connected to the third terminal by using the IP multimedia subsystem, and the first terminal and the third terminal are in an audio call state; the access network terminal device includes:

a user side interface, configured to receive a handover request of the first terminal, send a call request to the second terminal, where the call request carries an IP address of the remote media and port information, and receive the second terminal Answer the message;

a processing unit, configured to set an IP address of the user side media in the real-time transport protocol RTP proxy to an IP address of the second terminal device;

a network side interface, configured to forward an update media request from the second terminal to the third terminal to add a video;

And a proxy unit, configured to proxy an audio-video call between the second terminal and the third terminal after the third terminal accepts the update media request.

An embodiment of the present invention provides an audio and video call system, including an access network terminal device, a first terminal, and a second terminal; the first terminal supports an audio service, and the second terminal supports an audio and video service; The network access terminal device is connected to the third terminal by using an IP multimedia subsystem, where the first terminal and the third terminal are in an audio call state;

The access network terminal device is configured to receive a handover request of the first terminal, and send a call request to the second terminal, where the call request carries an IP address of the remote media and port information; The second terminal's answer message will be the IP of the user side media in the real-time transport protocol RTP proxy. An address is set to an IP address of the second terminal device; an update media request from the second terminal is forwarded to the third terminal to add a video; and the agent is after the third terminal accepts the update media request An audio-video call between the second terminal and the third terminal.

The audio and video call method, device and system provided by the embodiments of the present invention can be switched between multiple terminals connected to an access network terminal device, thereby implementing audio and video calls by using services supported by different terminals.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a schematic diagram of a system architecture according to an embodiment of the present invention;

2 is a flowchart of an audio and video call method according to an embodiment of the present invention;

FIG. 3 is a flowchart of an audio call method according to another embodiment of the present invention;

4 is a flowchart of an audio call method according to another embodiment of the present invention;

FIG. 5 is a schematic diagram of a structure of an access network terminal device according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of another structure of an access network terminal device according to an embodiment of the present invention.

Specific embodiment

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The network architecture involved in the embodiment of the present invention may be as shown in FIG. 1. The terminal 1 and the terminal 2 may be a terminal of a home, or belong to a campus, a factory, etc.; the terminal 3 belongs to another home, a campus, or a terminal of a factory. The terminal 1 and the terminal 2 can be connected to the access network terminal device 4 by wire or wirelessly. The access network terminal device 4 can pass the IP Multimedia Subsystem (IP Multimedia) Subsystem, IP Multimedia Subsystem) 5 connects terminal 3. The terminal 1 may be a device that supports voice services, such as a POTS (Plain Old Telephone Service) terminal, and the terminal 2 may be a device that supports audio and video services, such as a smart phone, a PAD, a smart TV, a PC, and the like.

The access network terminal device 4 may be an Optical Network Terminal (ONT), a router, a home gateway, or the like.

Based on the foregoing architecture, an embodiment of the present invention provides an audio and video call method, which provides a method for switching to the terminal 2 for audio and video calls when the terminal 1 and the terminal 3 are in an audio call state.

As shown in Figure 2, the methods provided include:

In step 200, the terminal 1 sends a handover request to the access network terminal device 4.

In this embodiment, the access network terminal device 4 allocates an internal number to each terminal of a home, and each terminal is respectively registered to the access network terminal device 4 through the internal number, and multiple terminals share a unified POTS number to implement external The call and the answering call are communicated between the terminals and between the terminal and the access network terminal device using the assigned internal number.

In this embodiment, when the terminal 1 performs an audio call, if the video call needs to be added, the handover request is sent to the access network terminal device 4, and the handover request carries the internal number of the terminal to be switched. In this embodiment, the terminal 2 supports the audio and video capability, and the terminal 1 wants to switch to the terminal 2, and the handover request sent by the terminal 1 to the access network terminal device 4 carries the internal number of the terminal 2.

The handover request may be based on a Session Initiation Protocol (SIP), such as an Invite message, and the internal number of the terminal 2 may be carried in the To header field of the Invite message.

In step 210, the access network terminal device 4 sends a call request to the terminal 2.

The call request sent by the access network terminal device 4 carries the IP address and port information of the remote media. In this embodiment, the access network terminal device 4 acts as a Real-Time Transport Protocol (RTP) proxy, and the access network terminal device 4 uses the voice wide area network (WAN) of the RTP proxy on the device. The IP address of the port and the port information of the voice WAN port are sent to the terminal 2 as the IP address and port information of the remote media. The terminal 2 initiates a call or receives a call according to the IP address and port information of the remote media, and the terminal device of the access network 4 Complete the RTP proxy process.

Step 220: The access network terminal device 4 receives the answer message of the terminal 2, and sets the IP address of the user side media in the RTP proxy to the IP address of the terminal 2.

After

steps

210 and 220, the voice RTP media stream can be sent between the access network terminal device 4 and the terminal 2.

Step 230, the access network terminal device 4 receives the update media request of the terminal 2, and forwards the update media request to the terminal 3 to add the video.

The media update request of the terminal 2 may be a SIP-based Invite message, and the From header field in the Invite message may carry the internal number of the terminal 2.

After receiving the media update request of the terminal 2, the access network terminal device 4 converts the internal number in the From header field in the media update request into a unified external number and forwards the result to the terminal 3.

Step 240: The access network terminal device 4 proxies the audio and video call between the terminal 2 and the terminal 3 after the terminal 3 accepts the update media request.

The foregoing method provided in this embodiment can perform handover between multiple terminals connected to an access network terminal device, thereby implementing audio and video calls by using services supported by different terminals.

In the embodiment of the present invention, the access network terminal device 4 establishes an audio call between the terminal 1 and the terminal 3. Specifically, the terminal 1 may initiate a call to the terminal 3 or the access network terminal device 4 passively receives the call of the terminal 3.

1) The process in which the terminal 1 actively initiates a call to the terminal 3 may be as shown in FIG. 3, including:

In step 300, the terminal 1 sends a call request to the access network terminal device 4.

The calling account that the terminal 1 sends the call request is the internal account of the terminal 1. The terminal 1 can carry the internal account in the From header field of the initiated call request, and send the call request to the access network terminal device 4.

Step 310: The access network terminal device 4 converts the internal number in the call request into an external number and sends it to the terminal 3.

The external number converted by the access network terminal device 4 is uniformly allocated by the upper layer network, such as the core network, and multiple terminals connected under the access network terminal device 4 can share the external number to communicate with the other end of the IMS network.

Further, the media IP address and port information of the Session Description Protocol (SDP) in the call request sent by the access network terminal device 4 to the terminal 3 may be the IP address of the voice WAN port on the access network terminal device 4. With port information.

Step 320: After the terminal 3 answers, the access network terminal device 4 sends the IP address and port information of the RTP proxy to the terminal 1.

After receiving the terminal 3, the terminal 3 sends an answer message 200 OK message to the access network terminal device 4, and the access network terminal device 4 adds the IP address and port information of the RTP proxy on the device to the IP address and port information of the peer media. The 200 OK message is sent to the terminal 1.

In step 330, the acknowledgment message of the terminal 1 is received, and the IP address and port information of the RTP proxy are added to the acknowledgment message and sent to the terminal 3.

The acknowledgment message of the terminal 1 may be an ACK message, and the access network terminal device 4 adds the IP address and port information of the RTP proxy to the ACK message and sends the IP address and port information of the local media to the terminal 3.

After the above-mentioned steps are successfully negotiated, the access network terminal device 4 completes the association of the RTP session, and implements the proxy of the subsequent media message, thereby implementing bidirectional conversion of the RTP message and the RTCP message.

2) When the access network terminal device 4 passively receives the call of the terminal 3, the implementation process may be as shown in FIG. 4, including:

Step 400, the access network terminal device 4 receives the call request of the terminal 3.

The call request of the terminal 3 may be an Invite message, and the To header field of the Invite message carries an external number uniformly allocated by the upper layer network to the access network terminal device 4.

In step 410, the external number in the call request is replaced with the internal number of the terminal 1 and sent to the terminal 1.

Further, the access network terminal device 4, as an RTP proxy, needs to carry the IP address of the RTP proxy of the device in the call request and send it to the terminal 1.

Step 420: Receive the answering message of the terminal 1, and carry the IP address and port information of the RTP proxy as the IP address and port information of the local media in the answering message and send it to the terminal 3.

Step 430: Receive the confirmation message of the terminal 3, and carry the IP address and port information of the RTP proxy as the IP address and port information of the peer media in the confirmation message and send the message to the terminal 1.

In the method for calling between the terminals in the embodiment, an internal account is allocated to a plurality of terminals connected to an access network terminal device, and the internal account is converted into a unified external account on the access network terminal device. No. For the upper layer network, the internal account is not visible, and each existing terminal needs to be assigned a separate external account, which can save resources.

An embodiment of the present invention provides an access network terminal device, which may be an ONT, a router, a home gateway, or the like. The provided access network terminal device can connect multiple terminals including the terminal 1, the terminal 2 through a wired or wireless connection, wherein the terminal 1 supports audio services, which can be a POTS terminal, etc., and the terminal 2 can support audio and video services, such as Smartphones, PADs, smart TVs, etc. The access network terminal device can connect to the terminal 3 through the IMS, and the terminal 3 belongs to another home, campus or factory terminal. The access network terminal device is capable of switching between audio calls and audio and video calls between a plurality of terminals. As shown in FIG. 5, the access network terminal device 4 includes a user side interface 50, a processing unit 52, a network side interface 54, and a proxy unit 56, and may further include a registration unit 58, a storage unit 59, and the like, wherein the processing unit 52 is respectively connected. The user side interface 50 and the network side interface 54 may be connected to the user side interface 50 and the network side interface 54 through a series of buses; the proxy unit 56 is connected to the processing unit 52.

The user side interface 50 may be a receiving converter, such as a transceiver, for receiving a handover request of the terminal 1; sending a call request to the terminal 2, the call request carrying an IP address and port information of the remote media; and receiving Receiving message of terminal 2;

The processing unit 52 may be a processor, such as a CPU, for setting the IP address of the user-side media in the RTP proxy to the IP address of the terminal 2;

The network side interface 54 may also be a receiving converter, such as an optical module, a transceiver, etc., for forwarding an update media request from the terminal 1 to the terminal 3 to add a video;

The proxy unit 56 is configured to perform an audio-video call between the terminal 2 and the terminal 3 after the terminal 3 accepts the update media request.

Specifically, the IP address and port information of the remote media carried in the call request sent by the user side interface 50 to the terminal 2 may be the IP address of the voice WAN port on the access network terminal device and the port information of the voice WAN port.

In the present embodiment, the access network terminal device 4 assigns each connected terminal an internal number, which may belong to a home or belong to a campus, a factory, or the like. An internal account can be used between these terminals and between these terminals and the access network terminal device 4, which communicate with other home, campus or factory terminals using a unified external account.

As an implementation manner, the terminal 1 can initiate a call request to the terminal 3 through the access network terminal device 4. In this process, the user-side interface unit 50 is used for a call request from the terminal 1, and the call request of the terminal 1 is carried. The internal number of the terminal 1;

The processing unit 52 is configured to replace the internal number in the call request of the terminal 1 with the external number assigned to the access network terminal device 4 by the upper layer network, and add the IP address and port information of the RTP proxy on the access network terminal device 4 to In the call request;

The network side interface 54 is configured to send the call information carrying the external number and the IP address of the RTP proxy and the port information to the terminal 3.

As another implementation manner, the access network terminal device 4 can also receive the call request of the terminal 3, in the process,

The network side interface 54 is configured to receive a call request from the terminal 3.

The processing unit 52 is configured to replace the external number in the call request with the internal number corresponding to the terminal 1, and modify the media IP address in the call request to the IP address of the RTP proxy on the access network terminal device 4, and Modifying the media port information address in the call request to the port information of the RTP proxy on the access network terminal device 4; transmitting the modified call request to the terminal 1 through the user side interface 50;

The user-side interface 50 is further configured to receive the answering message of the terminal 1 and send the answering message to the processing unit 52, so that the processing unit 52 replaces the IP address of the local media in the receiving message with the access network terminal device 4. The IP address of the RTP proxy, and the port information of the local media in the received message are replaced with the port information of the RTP proxy on the access network terminal device 4, and the modified answer message is forwarded to the terminal 3;

The network side interface 54 is further configured to receive the acknowledgement message of the terminal 3, and send the acknowledgement message to the processing unit 52, so that the processing unit 52 replaces the IP address of the peer media in the acknowledgement message with the RTP on the access network terminal device 4. The IP address of the proxy, and the port information of the peer media in the acknowledgment message are replaced with the port information of the RTP proxy on the access network terminal device 4, and the modified acknowledgment message is forwarded to the terminal 1 through the user side interface 50.

In another embodiment of the present invention, the provided access network terminal device 4 may include a registration unit 58 and a storage unit 59, as shown in FIG. The registration unit 58 may be a module integrated or independent with the processor 52 for receiving a registration request of the terminal, and the registration request of the terminal carries an internal number assigned to the terminal in advance. The processing unit 59 may be a memory for storing the internal number of the terminal and The upper layer unifies the external number assigned to the access network terminal 4, and the like.

The access network terminal device 4 provided in this embodiment can perform handover between multiple terminals, thereby implementing audio and video calls by using services supported by different terminals. At the same time, an internal account is allocated to a plurality of terminals connected to an access network terminal device, and the internal account is converted into a unified external account on the access network terminal device. For the upper layer network, the internal account is not visible, and the existing Each terminal needs to be assigned a separate external account to save resources.

A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, such as ROM/RAM, magnetic. Disc or CD.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. The scope of protection of the present invention should be construed as the scope of protection of the present invention.

Claims

An audio-video calling method, comprising: an access network terminal device, and a first terminal and a second terminal that are connected by the access network terminal device by wire or wireless; the first terminal supports an audio service, where The second terminal supports the audio and video service; the access network terminal device is connected to the third terminal by using the IP multimedia subsystem, and the first terminal and the third terminal are in an audio call state; the method includes:

Receiving, by the access network terminal device, a handover request of the first terminal;

The access network terminal device sends a call request to the second terminal, where the call request carries an IP address of the remote media and port information;

The access network terminal device receives the answer message of the second terminal, and sets an IP address of the user side media in the real-time transport protocol RTP proxy to an IP address of the second terminal device;

The access network terminal device forwards an update media request from the second terminal to the third terminal to add a video;

The access network terminal device proxies an audio-video call between the second terminal and the third terminal after the third terminal accepts the update media request.
The method according to claim 1, wherein the IP address of the remote media is an IP address of a voice wide area network WAN port on the access network terminal device; and the port information of the remote media is the Port information of the voice WAN port on the access network terminal device.
The method according to claim 1, wherein the access network terminal device respectively assigns an internal number to the first terminal and the second terminal; the first terminal and the third terminal The access network terminal device further includes establishing an audio call between the first terminal and the third terminal before being in an audio call state.
The method of claim 3, wherein the establishing, by the access network terminal device, the audio call between the first terminal and the third terminal comprises:

Receiving a call request from the first terminal, where the call request of the first terminal carries an internal number of the first terminal;

Replacing the internal number in the call request of the first terminal with the external number assigned to the access network terminal device by the upper layer network, and the IP address of the RTP proxy on the access network terminal device and Port information is added to the call request;

Sending the call information carrying the external number and the IP address of the RTP proxy and the port information to the third terminal.

Receiving the answering message of the third terminal, carrying the IP address of the RTP proxy and the port information in the answering message, and sending the message to the first terminal;

Receiving the acknowledgement message of the first terminal, adding the IP address and port information of the RTP proxy to the acknowledgement message and sending the message to the third terminal.
The method of claim 3, wherein the establishing, by the access network terminal device, the audio call between the first terminal and the third terminal comprises:

Receiving a call request from the third terminal;

Replacing the external number in the call request with the internal number corresponding to the first terminal, modifying the media IP address in the call request to the IP address of the RTP proxy on the access network terminal device, and placing the call request The media port information address is modified to be the port information of the RTP proxy on the access network terminal device; the modified call request is sent to the first terminal;

Receiving the answering message of the first terminal, replacing the IP address of the local media in the receiving message with the IP address of the RTP proxy on the terminal device of the access network, and the port information of the local media in the receiving message Replacing the port information of the RTP proxy on the access network terminal device, and forwarding the modified answer message to the third terminal;

Receiving the acknowledgement message of the third terminal, replacing the IP address of the peer media in the confirmation message with the IP address of the RTP proxy on the access network terminal device, and the port information of the peer media in the confirmation message And replacing the port information of the RTP proxy on the access network terminal device, and forwarding the modified acknowledgement message to the first terminal.
The method according to claim 1, wherein the access network terminal device respectively assigns an internal number to the first terminal and the second terminal; and the switching request of the first terminal carries The internal number of the terminal to be switched, the access network terminal device sends a call request to the corresponding terminal according to the internal number of the terminal to be switched.
An access network terminal device, wherein the access network terminal device has a first terminal and a second terminal connected by wire or wireless; the first terminal supports audio service, and the second terminal supports audio and video The access network terminal device connects to the third terminal through the IP multimedia subsystem. The first terminal and the third terminal are in an audio call state; the access network terminal device includes:

a user side interface, configured to receive a handover request of the first terminal, send a call request to the second terminal, where the call request carries an IP address of the remote media and port information, and receive the second terminal Answer the message;

a processing unit, configured to set an IP address of the user side media in the real-time transport protocol RTP proxy to an IP address of the second terminal;

a network side interface, configured to forward an update media request from the second terminal to the third terminal to add a video;

And a proxy unit, configured to proxy an audio-video call between the second terminal and the third terminal after the third terminal accepts the update media request.
The access network terminal device according to claim 7, further comprising a registration unit, configured to receive a registration request of the first terminal and a registration request of the second terminal, where the registration request of the first terminal is carried There is an internal number pre-allocated by the first terminal, and the registration request of the second terminal carries an internal number pre-allocated by the second terminal.
The access network terminal device according to any one of claims 7-8, wherein the access network terminal device is an optical network terminal ONT, a router or a home gateway.
An audio-video calling system, comprising: an access network terminal device, a first terminal, and a second terminal; the access network terminal device is connected to the first terminal and the second terminal by wire or wireless; The first terminal supports the audio service, the second terminal supports the audio and video service; the access network terminal device connects to the third terminal through the IP multimedia subsystem, and the first terminal and the third terminal are in an audio call state. ;

The access network terminal device is configured to receive a handover request of the first terminal, and send a call request to the second terminal, where the call request carries an IP address of the remote media and port information; Receiving, by the second terminal, the IP address of the user-side media in the real-time transport protocol RTP proxy is set to the IP address of the second terminal device; and forwarding the update media request from the second terminal to the third The terminal increases the video; and proxies the audio and video call between the second terminal and the third terminal after the third terminal accepts the update media request.
The system according to claim 10, wherein the IP address of the remote medium is an IP address of a voice wide area network WAN port on the access network terminal device; the remote media port The information is port information of the voice WAN port on the access network terminal device.