WO2012083606A1 - Method and system for audio and video conversations - Google Patents
Method and system for audio and video conversations Download PDFInfo
- Publication number
- WO2012083606A1 WO2012083606A1 PCT/CN2011/071146 CN2011071146W WO2012083606A1 WO 2012083606 A1 WO2012083606 A1 WO 2012083606A1 CN 2011071146 W CN2011071146 W CN 2011071146W WO 2012083606 A1 WO2012083606 A1 WO 2012083606A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- video
- top box
- set top
- voice call
- sharing service
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/148—Interfacing a video terminal to a particular transmission medium, e.g. ISDN
Definitions
- the present invention relates to the field of communications, and in particular, to a method and system for voice and video calls. Background technique
- IPTV Internet Protocol Television
- IPTV Internet Protocol Television
- Traditional TV services IPTV
- IPTV is a service that uses broadband networks to provide multimedia services to users. Its main features are interactivity and real-time.
- IPTV services users can get high-quality digital media services, and they can freely choose broadband IP networks.
- Video programming also makes it easy to combine TV services with Internet browsing, email delivery, and a variety of online information consulting, entertainment, education, and business functions.
- the so-called video call is to provide users with audio and video call services. Simply put, it is to add visual services to the phone service, that is, during the call, in addition to listening to the other party's voice, you can also see the other party's image, so that the user Have the feeling of face-to-face conversation.
- the current telephone service generally only provides voice call services.
- special equipment is required for video call classes. Such devices are expensive, and ordinary users cannot afford them.
- For ordinary telephone terminals supporting video calls there are some problems to be solved, such as battery power consumption and video transmission, and the price of such terminals is also high. It is difficult to promote the video communication service based on the above various reasons.
- the IPTV set-top box can realize the collection of local video images, that is, the video images collected by the local camera can be sent to another set-top box on the remote end of the IPTV network through the camera and the IPTV set-top box, and the television set is externally connected through the set-top box.
- the device can receive the image, that is, the video images of the two set-top boxes can be viewed from each other, but the disadvantage is that most of the set-top boxes currently used can only collect video images, but cannot collect voices, so such transmissions only I can see the image and I can't hear the sound. If you use a professional audio and video collection peripheral to connect to the set-top box, the same peripherals also have the problem of high cost. Summary of the invention
- the main technical problem to be solved by the present invention is to provide a voice and video calling method and system, which are used to solve the problem that the prior art can only use a professional device for a language video call, which cannot be used by ordinary users.
- the present invention provides a method for voice and video call, the method comprising the steps of: setting an association relationship between a voice call terminal and a set top box; after receiving the voice call request, the video sharing service server The relationship between the voice call terminal and the set top box is obtained, and the set top box associated with the voice call terminal of the calling party is obtained; the video call of the calling party is established by the set top box associated with the voice call terminal of the calling party.
- the video sharing service server is deployed in an IMS network domain.
- set top box is registered as a SIP terminal to register to the IMS network, and the set top box is simultaneously registered to the core network when the device is powered on.
- an association relationship between the voice call terminal and the set top box is set on the video sharing service server.
- the video sharing service server is associated with the call session control function CSCF, and the CSCF receives the voice call request information of the calling party and forwards the information to the video sharing service server, where the video sharing service server sends the voice call. Request information is sent to the called party.
- the video sharing service server separately sends the video call request information to the set top box associated with the calling party voice call terminal.
- the video sharing service server establishes a video call of the calling party and the called party after receiving the confirmation message of the video call request information sent by the set top box associated with the calling party voice call terminal. Further, after the established primary and called party video call is interrupted, it is initiated by either party of the calling party or the called party.
- the set-top box initiated by the calling party and the called party (including the called party) to initiate the video call initiates a video call request, and the called party (or the calling party) confirms to establish a video call.
- the present invention further provides a system for voice and video calls, the system comprising: an association relationship setting unit, configured to set an association relationship between a voice call terminal and a set top box; and a set top box acquisition unit, configured to receive the video sharing service server After the voice call request, acquiring, according to the association relationship between the voice call terminal and the set top box, a set top box associated with the voice call terminal of the calling party; the video call establishing unit, configured to use the voice call terminal with the calling party and the called party The associated set top box establishes a video call between the calling party and the called party.
- the invention has the beneficial effects that the common video equipment, such as the existing language calling terminal and the IPTV set top box, can conveniently implement the voice and video call, which greatly reduces the cost of the user for the voice video call.
- FIG. 1 is a structural diagram of each network element involved in an embodiment of the present invention.
- FIG. 2 is a logic flow diagram of establishing a voice call according to an embodiment of the present invention.
- FIG. 3 is a signaling flowchart of establishing a voice call according to an embodiment of the present invention. detailed description
- an IMS (IP Multimedia Subsystem) network is taken as an example in this embodiment.
- the video sharing service server is deployed in the IMS network area, and the voice is set on the video sharing service server.
- the video sharing service server performs service triggering by using the ISC (Server Control) and the CSCF (Call Session Control Function).
- the CSCF After receiving the voice call request sent by the calling party, the CSCF forwards the voice call request to the video sharing service server, and the video sharing is performed.
- the service server After receiving the voice call request, acquires set-top box information associated with the voice call terminal of the calling party and the set-top box, and then establishes between the calling party and the called party through the set-top box according to the relationship between the voice call terminal and the set-top box.
- Video call the set top box information includes media description information of video communication.
- the IMS network user performs service triggering through the video sharing service server.
- the set top box (STB) is registered as a SIP (Session Initiation Protocol) terminal in the IMS network system, and the video sharing service server is subscribed, and the CSCF is also registered as a third party to the video sharing service server.
- SIP Session Initiation Protocol
- NGN network users and Code Division Multiple Access (CDMA) network users are taken as examples to illustrate how different network users are connected in the IMS network structure.
- an NGN network user such as a public switched telephone network (PSTN) telephone subscription video sharing service server
- PSTN public switched telephone network
- NGN network user initiates a voice call request through a video sharing service server
- the video sharing service server assists
- the server SS routes the request information of the voice call request to the media gateway control control function (MGCF) in the IMS network domain, and then the MGCF forwards the information to the CSCF to implement service triggering, and pre-plugs the access code in the request information.
- MGCF media gateway control control function
- the CDMA network user subscribes to the video sharing service server (AS), first triggers the anchoring service in the CDMA network domain, and anchors the video sharing service server AS, and adds the prefix N1 to the called user to place the call.
- the request information is routed to the MGCF of the IMS domain, and then the service is triggered by the CSCF. After the processing is completed, the called user is called by the IMS network.
- the IPTV set-top box subscribes to the video sharing service server
- the corresponding data is modified in the core network
- the IPTV set-top box is registered to the core network after being powered on
- the CSCF is registered as a third party to the video sharing service server, wherein the core network is used to implement the computer network and Interworking of communication networks.
- the following specifically describes how to automatically establish a video call after the voice call is established during the actual call, and how to initiate a video call again after the party actively interrupts the video call.
- Step 201 Start establishing a voice call
- Step 202 Determine whether the main called user has the video companion service capability, that is, whether there is an IPTV set top box for making a video call, if yes, execute step 203, otherwise, go to step 212;
- Step 203 Call the calling user by the video sharing service server Set top box
- Step 204 Determine whether the video sharing service server calls the calling user is successful, if successful, proceed to step 205, otherwise, go to step 212;
- Step 205 Calling the called user set-top box by the video sharing service server
- Step 206 Determine whether the video sharing service server calls the called user set-top box is successful, if successful, perform step 207, otherwise, go to step 212;
- Step 207 Establish a voice call between the calling party and the called party.
- Step 208 Ending the call by either the calling party or the called party;
- Step 209 Determine whether there is a video session at this time, if otherwise, jump to step 211;
- Step 210 Release the video session
- Step 211 Release the voice call
- Step 212 End the voice call.
- Step 301 The telephone terminal A is directed to the telephone terminal B initiates a voice call request, and the request information of the voice call request is sent to the video sharing service server AS through the core network;
- Step 302 After the video sharing service server AS performs authentication and the like on the received voice call request, the voice call request information is sent to the phone terminal B through the core network.
- Step 303 After the phone terminal B answers, Video sharing service server AS returns voice communication 200 OK response information of the request message;
- Step 304 The video sharing service server AS sends a 200 OK response message of the telephone terminal B to the language call request information to the telephone terminal A;
- Step 305 After receiving the 200 OK response information of the voice call request information by the telephone terminal B, the telephone terminal A returns an ACK information acknowledged by the 200 OK response to the video sharing service server AS.
- Step 306 The telephone terminal B returns an ACK response to the 200 OK response confirmation to the video sharing service server AS.
- the telephone terminal A and the telephone terminal B have established a voice call through the video sharing service , AS AS, and the signaling flow for automatically establishing a video call after the telephone terminal A establishes a voice call with the telephone terminal B will be described below:
- Step 307 The video sharing service server AS sends information about establishing a video call request to the set top box A through the core network.
- Step 308 The set top box STB A returns a 200 OK response to the video sharing service server AS to establish video call request information.
- Step 309 The video sharing service server AS returns an acknowledgement ACK message to the set top box A for responding to the 200 OK;
- Step 310 The video sharing service server AS sends information about establishing a video call request to the set top box B through the core network.
- Step 311 The set top box B returns a 200 OK response to the video sharing request information to the video sharing service server AS.
- Step 312 The video sharing service server AS returns an acknowledgement ACK message to the set top box B for responding to the 200 OK;
- Step 313 The telephone terminal A hangs up and sends the request information for leaving the call to the video sharing service server AS.
- Step 314 The video sharing service server AS returns a 200 OK response to the leaving call request information to the telephone terminal A.
- Step 315 The video sharing service server AS sends a message to the telephone terminal B notifying that it left the call;
- Step 316 The telephone terminal B returns to the video sharing service server AS a 200 OK response notifying that it left the call message;
- Step 317 The video sharing service server AS sends a message to the set top box A to notify it to leave;
- the set top box A returns a 200 OK response to the video sharing service server AS notifying the leaving message;
- Step 319 The video sharing service server AS sends a message to the set top box B notifying that it left;
- Step 320 The set top box B returns a 200 OK response notifying the leaving message to the video sharing service server AS.
- Figure 4 is a logic flow diagram for initiating a video call after interrupting a video call:
- Step 401 The voice call remains unblocked, and the video call is interrupted;
- Step 402 The user of the telephone terminal A and the user of the telephone terminal B need to establish a video call again;
- Step 403 The user of the telephone terminal A (or the user of the telephone terminal B) performs a corresponding operation on the associated set top box A (or the set top box B), and initiates a request for establishing a video call to the set top box B (or the set top box A);
- Step 404 After receiving the request for establishing a video call, the set top box B (or the set top box A) confirms that the video call request is established;
- Step 405 Establish a video call through the video sharing service server.
- an embodiment of the present invention provides a method and system for voice video call, where the system includes:
- An association relationship setting unit configured to set an association relationship between the voice call terminal and the set top box
- the set top box acquiring unit configured to: after the video sharing service server receives the voice call request, according to the association between the voice call terminal and the set top box Relationship, obtaining set top box information associated with a voice call terminal of the calling party;
- a video call establishing unit is configured to establish a video call of the calling party and the called party through a set top box associated with the voice call terminal of the calling party.
- the modules of the system provided by the embodiment of the present invention are all configured to implement the steps of the voice video calling method proposed by the present invention, and the functions thereof can be directly derived from the steps in the foregoing method embodiments, so as to save space, I won't go into details here.
- the system provided by the invention breaks the limitation of using the professional device to perform video call in the prior art, and provides great convenience for the ordinary user to realize the video call.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Abstract
A method and system for audio and video conversations are disclosed in the present invention, which includes the following steps that: association relations between audio call terminals and Set Top Boxes (STBs) are set; after receiving an audio conversation request, a video sharing service server acquires, according to the association relations between the audio call terminals and the STBs, the STB associated with the audio call terminals of calling and called parties; and a video conversation between the calling and called parties is established via the STBs associated with the audio call terminals of said calling and called parties. A system for audio and video conversations is also disclosed. The present invention realizes audio and video conversations by merely utilizing existing devices, thus reducing audio and video conversations cost, and providing convenience for general users during audio and video conversations.
Description
一种语音视频通话的方法及系统 技术领域 Method and system for voice and video call
本发明涉及通信领域, 尤其涉及一种语音视频通话的方法及系统。 背景技术 The present invention relates to the field of communications, and in particular, to a method and system for voice and video calls. Background technique
交互式网络电视 ( Internet Protocol Television, IPTV ) 即网络电视, 它 是互联网业务和传统电视业务融合后产生的新业务。 简单地说, IPTV是一 种利用宽带网络为用户提供多媒体服务的业务, 其主要特点在于交互性和 实时性, 通过 IPTV业务, 用户可以得到高质量的数字媒体服务, 可以自由 地选择宽带 IP网上视频节目,还可以非常容易地将电视服务和互联网浏览、 电子邮件收发以及多种在线信息咨询、 娱乐、 教育及商务功能结合在一起。 Internet Protocol Television (IPTV) is a network TV, which is a new service generated by the integration of Internet services and traditional TV services. Simply put, IPTV is a service that uses broadband networks to provide multimedia services to users. Its main features are interactivity and real-time. Through IPTV services, users can get high-quality digital media services, and they can freely choose broadband IP networks. Video programming also makes it easy to combine TV services with Internet browsing, email delivery, and a variety of online information consulting, entertainment, education, and business functions.
所谓视频呼叫即为用户提供音视频的通话服务, 简单地说, 就是在电 话服务中增加可视化的服务, 即通话过程中, 除了可以收听到对方的语音 还可以看到对方的影像, 从而让用户有面对面谈话的感受。 The so-called video call is to provide users with audio and video call services. Simply put, it is to add visual services to the phone service, that is, during the call, in addition to listening to the other party's voice, you can also see the other party's image, so that the user Have the feeling of face-to-face conversation.
目前的电话服务, 一般只提供语音通话类的服务, 对于视频通话类一 般需要特殊的设备才能进行, 这种设备价格昂贵, 普通用户一般无法承担。 而对于支持视频通话的普通电话终端存在电池功耗、 影像传输等一些待解 决的问题, 而且这种终端的价格也很高, 基于以上各种原因便捷的视频通 话业务很难被推广。 The current telephone service generally only provides voice call services. Generally, special equipment is required for video call classes. Such devices are expensive, and ordinary users cannot afford them. For ordinary telephone terminals supporting video calls, there are some problems to be solved, such as battery power consumption and video transmission, and the price of such terminals is also high. It is difficult to promote the video communication service based on the above various reasons.
现在 IPTV机顶盒都可以实现本地的视频影像的釆集,即通过摄像头和 IPTV机顶盒可以将本地釆集到的视频影像, 发送到 IPTV网络上远端的另 一个机顶盒上, 并通过该机顶盒外接电视显示器等设备就可以收看到影像, 即可以实现两个机顶盒之间视频影像的互相观看, 但是缺点是目前所使用 的机顶盒大多数只能釆集视频影像, 而无法釆集语音, 因此这样的传输只
能看到图像而无法听到声音。 如果使用专业的音频视频釆集外设接机顶盒 来实现, 同样这种外设也存在造价过高的问题。 发明内容 Now, the IPTV set-top box can realize the collection of local video images, that is, the video images collected by the local camera can be sent to another set-top box on the remote end of the IPTV network through the camera and the IPTV set-top box, and the television set is externally connected through the set-top box. The device can receive the image, that is, the video images of the two set-top boxes can be viewed from each other, but the disadvantage is that most of the set-top boxes currently used can only collect video images, but cannot collect voices, so such transmissions only I can see the image and I can't hear the sound. If you use a professional audio and video collection peripheral to connect to the set-top box, the same peripherals also have the problem of high cost. Summary of the invention
本发明要解决的主要技术问题是, 提供一种语音视频的通话方法及系 统, 用于解决现有技术中只能釆用专业设备进行语言视频通话, 普通用户 无法使用的问题。 The main technical problem to be solved by the present invention is to provide a voice and video calling method and system, which are used to solve the problem that the prior art can only use a professional device for a language video call, which cannot be used by ordinary users.
为解决上述技术问题, 本发明提供一种语音视频通话的方法,所述方法 包括以下步骤: 设置语音呼叫终端与机顶盒之间的关联关系; 视频共享业 务服务器在接收到语音通话请求后, 根据所述语音呼叫终端与机顶盒之间 的关联关系, 获取与主被叫方的语音呼叫终端关联的机顶盒; 通过与主被 叫方的语音呼叫终端关联的机顶盒建立主被叫方的视频通话。 To solve the above technical problem, the present invention provides a method for voice and video call, the method comprising the steps of: setting an association relationship between a voice call terminal and a set top box; after receiving the voice call request, the video sharing service server The relationship between the voice call terminal and the set top box is obtained, and the set top box associated with the voice call terminal of the calling party is obtained; the video call of the calling party is established by the set top box associated with the voice call terminal of the calling party.
进一步地, 将所述视频共享业务服务器部署在 IMS网络域内。 Further, the video sharing service server is deployed in an IMS network domain.
进一步地, 所述机顶盒作为 SIP终端接入注册到 IMS网络, 并且所述 机顶盒在开机时同时注册到核心网。 Further, the set top box is registered as a SIP terminal to register to the IMS network, and the set top box is simultaneously registered to the core network when the device is powered on.
进一步地, 在所述视频共享业务服务器上设置语音呼叫终端与机顶盒 之间的关联关系。 Further, an association relationship between the voice call terminal and the set top box is set on the video sharing service server.
进一步地, 所述视频共享业务服务器与呼叫会话控制功能 CSCF关联, 所述 CSCF接收到主叫方的语音通话请求信息后转发给所述视频共享业务 服务器, 由视频共享业务服务器将所述语音通话请求信息发送给被叫方。 Further, the video sharing service server is associated with the call session control function CSCF, and the CSCF receives the voice call request information of the calling party and forwards the information to the video sharing service server, where the video sharing service server sends the voice call. Request information is sent to the called party.
进一步地, 所述视频共享业务服务器接收到主被叫方语音呼叫终端对 所述语音通话请求信息的确认信息后, 分别向与主被叫方语音呼叫终端关 联的机顶盒发送视频通话请求信息。 Further, after receiving the confirmation information of the voice call request information by the calling party and the called party, the video sharing service server separately sends the video call request information to the set top box associated with the calling party voice call terminal.
进一步地, 所述视频共享业务服务器接收到与主被叫方语音呼叫终端 关联的机顶盒发送的对所述视频通话请求信息的确认信息后建立主被叫方 的视频通话。
进一步地, 建立好的主被叫方视频通话在中断后, 由主被叫方任一方 再次发起。 Further, the video sharing service server establishes a video call of the calling party and the called party after receiving the confirmation message of the video call request information sent by the set top box associated with the calling party voice call terminal. Further, after the established primary and called party video call is interrupted, it is initiated by either party of the calling party or the called party.
进一步地, 所述由主被叫方再次发起视频通话包括主叫方(或被叫方) 操作关联的机顶盒发起视屏通话请求, 被叫方 (或主叫方)确认后建立视 频通话。 Further, the set-top box initiated by the calling party and the called party (including the called party) to initiate the video call initiates a video call request, and the called party (or the calling party) confirms to establish a video call.
本发明还提供一种语音视频通话的系统, 所述系统包括: 关联关系设 置单元, 用于设置语音呼叫终端与机顶盒之间的关联关系; 机顶盒获取单 元, 用于在视频共享业务服务器在接收到语音通话请求后, 根据所述语音 呼叫终端与机顶盒之间的关联关系, 获取与主被叫方的语音呼叫终端关联 的机顶盒; 视频通话建立单元, 用于通过与主被叫方的语音呼叫终端关联 的机顶盒建立主被叫方的视频通话。 The present invention further provides a system for voice and video calls, the system comprising: an association relationship setting unit, configured to set an association relationship between a voice call terminal and a set top box; and a set top box acquisition unit, configured to receive the video sharing service server After the voice call request, acquiring, according to the association relationship between the voice call terminal and the set top box, a set top box associated with the voice call terminal of the calling party; the video call establishing unit, configured to use the voice call terminal with the calling party and the called party The associated set top box establishes a video call between the calling party and the called party.
本发明的有益效果是:釆用普通的设备,如现有的语言呼叫终端和 IPTV 机顶盒就可以方便的实现语音视频通话, 很大程度上减少了用户用于语音 视频通话的花费。 附图说明 The invention has the beneficial effects that the common video equipment, such as the existing language calling terminal and the IPTV set top box, can conveniently implement the voice and video call, which greatly reduces the cost of the user for the voice video call. DRAWINGS
图 1为本发明一种实施例中所涉及的各网元的结构图; 1 is a structural diagram of each network element involved in an embodiment of the present invention;
图 2为本发明一种实施例中建立语音通话的逻辑流程图; 2 is a logic flow diagram of establishing a voice call according to an embodiment of the present invention;
图 3为本发明一种实施例中建立语音通话的信令流程图; 流程图。 具体实施方式 3 is a signaling flowchart of establishing a voice call according to an embodiment of the present invention; detailed description
下面通过具体实施方式结合附图对本发明作进一步详细说明。 The present invention will be further described in detail below with reference to the accompanying drawings.
请参考图 1 , 本实施例中以 IMS ( IP多媒体子系统) 网络为例。 视频 共享业务服务器部署 IMS网络区域内, 在视频共享业务服务器上设置语音
呼叫终端与机顶盒的关联关系。视频共享业务服务器通过 ISC(服务器控制) 与 CSCF (呼叫会话控制功能)进行业务触发, CSCF接收到主叫方发送的 语音通话请求后, 将所述语音通话请求转发给视频共享业务服务器, 视频 共享业务服务器接收到所述语音通话请求后, 根据语音呼叫终端与机顶盒 之间的关联关系, 获取与主被叫方的语音呼叫终端关联的机顶盒信息后通 过所述机顶盒建立主被叫方之间的视频通话, 所述机顶盒信息包含视频通 信的媒体描述信息。 IMS网络用户通过视频共享业务服务器进行业务触发。 其中机顶盒(Set Top Box, STB )作为 SIP (会话初始协议) 的终端注册到 IMS 网络系统中, 并且签约视频共享业务服务器, 同时 CSCF也作为第三 方注册到视频共享业务服务器。 分别以下一代网络 (Next Generation Network, NGN ) 网络用户和码分多址 (Code Division Multiple Access, CDMA )网络用户为例,说明 IMS网络结构中不同网络用户是如何接入的。 以 NGN 网络用户为例, NGN 网络用户, 如公共交换电话网络( Public Switched Telephone Network, PSTN)电话签约视频共享业务服务器, NGN 网络用户通过视频共享业务服务器发起语音通话请求, 视频共享业务服务 器通过辅助服务器 SS将语音通话请求的请求信息路由到 IMS网络域中的媒 体网关控制控制功能(MGCF ), 再由 MGCF将信息转发到 CSCF, 实现业 务触发, 并通过在请求信息中前插接入码, 将话路路由到 NGN 网络。 以 CDMA网络用户为例, CDMA网络用户签约视频共享业务服务器( AS ), 首先在 CDMA网络域中触发锚定业务, 并锚定视频共享业务服务器 AS, 在被叫用户前添加前缀 N1 ,将呼叫请求信息路由到 IMS域的 MGCF,再经 由 CSCF实现业务触发, 处理完毕后, 由 IMS网络呼叫被叫用户。 IPTV机 顶盒签约视频共享业务服务器后, 在核心网修改相应的数据, IPTV机顶盒 开机后注册到核心网, 并将 CSCF作为第三方注册到视频共享业务服务器, 其中所述核心网用于实现计算机网络和通信网络的互通。
下面具体说明在实际通话过程中, 如何实现在语音通话建立后自动建 立视频通话, 并且在一方主动中断视频通话后如何再次发起视频通话。 Referring to FIG. 1, an IMS (IP Multimedia Subsystem) network is taken as an example in this embodiment. The video sharing service server is deployed in the IMS network area, and the voice is set on the video sharing service server. The relationship between the calling terminal and the set top box. The video sharing service server performs service triggering by using the ISC (Server Control) and the CSCF (Call Session Control Function). After receiving the voice call request sent by the calling party, the CSCF forwards the voice call request to the video sharing service server, and the video sharing is performed. After receiving the voice call request, the service server acquires set-top box information associated with the voice call terminal of the calling party and the set-top box, and then establishes between the calling party and the called party through the set-top box according to the relationship between the voice call terminal and the set-top box. Video call, the set top box information includes media description information of video communication. The IMS network user performs service triggering through the video sharing service server. The set top box (STB) is registered as a SIP (Session Initiation Protocol) terminal in the IMS network system, and the video sharing service server is subscribed, and the CSCF is also registered as a third party to the video sharing service server. The Next Generation Network (NGN) network users and Code Division Multiple Access (CDMA) network users are taken as examples to illustrate how different network users are connected in the IMS network structure. For example, an NGN network user, such as a public switched telephone network (PSTN) telephone subscription video sharing service server, an NGN network user initiates a voice call request through a video sharing service server, and the video sharing service server assists The server SS routes the request information of the voice call request to the media gateway control control function (MGCF) in the IMS network domain, and then the MGCF forwards the information to the CSCF to implement service triggering, and pre-plugs the access code in the request information. Route the session to the NGN network. Taking the CDMA network user as an example, the CDMA network user subscribes to the video sharing service server (AS), first triggers the anchoring service in the CDMA network domain, and anchors the video sharing service server AS, and adds the prefix N1 to the called user to place the call. The request information is routed to the MGCF of the IMS domain, and then the service is triggered by the CSCF. After the processing is completed, the called user is called by the IMS network. After the IPTV set-top box subscribes to the video sharing service server, the corresponding data is modified in the core network, and the IPTV set-top box is registered to the core network after being powered on, and the CSCF is registered as a third party to the video sharing service server, wherein the core network is used to implement the computer network and Interworking of communication networks. The following specifically describes how to automatically establish a video call after the voice call is established during the actual call, and how to initiate a video call again after the party actively interrupts the video call.
首先对建立语音通话的逻辑流程进行说明, 请参考图 2: First, the logic flow for establishing a voice call is explained. Please refer to Figure 2:
步骤 201 : 开始建立语音通话; Step 201: Start establishing a voice call;
步骤 202: 判断主被叫用户是否具有视频伴侣业务能力, 即是否具有进 行视频通话的 IPTV机顶盒, 若是则执行步骤 203 , 否则跳转至步骤 212; 步骤 203: 由视频共享业务服务器呼叫主叫用户机顶盒; Step 202: Determine whether the main called user has the video companion service capability, that is, whether there is an IPTV set top box for making a video call, if yes, execute step 203, otherwise, go to step 212; Step 203: Call the calling user by the video sharing service server Set top box
步骤 204: 判断视频共享业务服务器呼叫主叫用户是否成功, 若成功则 执行步骤 205 , 否则跳转至步骤 212; Step 204: Determine whether the video sharing service server calls the calling user is successful, if successful, proceed to step 205, otherwise, go to step 212;
步骤 205: 由视频共享业务服务器呼叫被叫用户机顶盒; Step 205: Calling the called user set-top box by the video sharing service server;
步骤 206: 判断视频共享业务服务器呼叫被叫用户机顶盒是否成功, 若 成功则执行步骤 207 , 否则跳转至步骤 212; Step 206: Determine whether the video sharing service server calls the called user set-top box is successful, if successful, perform step 207, otherwise, go to step 212;
步骤 207: 建立主被叫用户之间的语音通话; Step 207: Establish a voice call between the calling party and the called party.
步骤 208: 由主被叫用户任一方结束通话; Step 208: Ending the call by either the calling party or the called party;
步骤 209: 判断此时是否存在视频会话, 若否则跳转至步骤 211 ; Step 209: Determine whether there is a video session at this time, if otherwise, jump to step 211;
步骤 210: 释放视频会话; Step 210: Release the video session;
步骤 211 : 释放语音通话; Step 211: Release the voice call;
步骤 212: 结束语音通话。 Step 212: End the voice call.
下面对语音视频通话建立过程中的信令流程进行说明, 请参考图 3,电 话终端 A对应的机顶盒为机顶盒 A,电话终端 B对应的机顶盒为机顶盒 B: 步骤 301 : 电话终端 A向电话终端 B发起语音通话请求, 所述语音通 话请求的请求信息通过核心网发送至视频共享业务服务器 AS; The following describes the signaling flow in the process of establishing a voice and video call. Referring to FIG. 3, the set top box corresponding to the telephone terminal A is the set top box A, and the set top box corresponding to the telephone terminal B is the set top box B: Step 301: The telephone terminal A is directed to the telephone terminal B initiates a voice call request, and the request information of the voice call request is sent to the video sharing service server AS through the core network;
步骤 302: 视频共享业务服务器 AS对所接收到的语音通话请求作出鉴 权等相关处理后, 通过核心网将所述语音通话请求信息发送至电话终端 B; 步骤 303: 电话终端 B应答后, 向视频共享业务服务器 AS返回语音通
话请求信息的 200 OK响应信息; Step 302: After the video sharing service server AS performs authentication and the like on the received voice call request, the voice call request information is sent to the phone terminal B through the core network. Step 303: After the phone terminal B answers, Video sharing service server AS returns voice communication 200 OK response information of the request message;
步骤 304: 视频共享业务服务器 AS向电话终端 A发送电话终端 B对 语言通话请求信息的 200 OK响应信息; Step 304: The video sharing service server AS sends a 200 OK response message of the telephone terminal B to the language call request information to the telephone terminal A;
步骤 305:电话终端 A接收到电话终端 B对语言通话请求信息的 200 OK 响应信息后, 向视频共享业务服务器 AS返回对所述 200 OK响应确认的 ACK信息; Step 305: After receiving the 200 OK response information of the voice call request information by the telephone terminal B, the telephone terminal A returns an ACK information acknowledged by the 200 OK response to the video sharing service server AS.
步骤 306: 电话终端 B向视频共享业务服务器 AS返回对 200 OK响应 确认的 ACK响应; Step 306: The telephone terminal B returns an ACK response to the 200 OK response confirmation to the video sharing service server AS.
到此步骤,电话终端 A与电话终端 B已经通过视频共享业务 Λ良务器 AS 建立语音通话, 下面将描述电话终端 A与电话终端 B建立语音通话后自动 建立视频通话的信令流程: At this step, the telephone terminal A and the telephone terminal B have established a voice call through the video sharing service , AS AS, and the signaling flow for automatically establishing a video call after the telephone terminal A establishes a voice call with the telephone terminal B will be described below:
步骤 307:视频共享业务服务器 AS通过核心网向机顶盒 A发送建立视 频通话请求的信息; Step 307: The video sharing service server AS sends information about establishing a video call request to the set top box A through the core network.
步骤 308:机顶盒 STB A向视频共享业务服务器 AS返回对建立视频通 话请求信息的 200 OK响应; Step 308: The set top box STB A returns a 200 OK response to the video sharing service server AS to establish video call request information.
步骤 309:视频共享业务服务器 AS向机顶盒 A返回对 200 OK响应的 确认 ACK消息; Step 309: The video sharing service server AS returns an acknowledgement ACK message to the set top box A for responding to the 200 OK;
步骤 310:视频共享业务服务器 AS通过核心网向机顶盒 B发送建立视 频通话请求的信息; Step 310: The video sharing service server AS sends information about establishing a video call request to the set top box B through the core network.
步骤 311 :机顶盒 B向视频共享业务服务器 AS返回对建立视频通话请 求信息的 200 OK响应; Step 311: The set top box B returns a 200 OK response to the video sharing request information to the video sharing service server AS.
步骤 312:视频共享业务服务器 AS向机顶盒 B返回对 200 OK响应的 确认 ACK消息; Step 312: The video sharing service server AS returns an acknowledgement ACK message to the set top box B for responding to the 200 OK;
到此步骤, 电话终端 A与电话终端 B已经通过各自的机顶盒建立视频 通话, 下面描述一方挂机后释放语音视频通话的信令流程:
步骤 313: 电话终端 A挂机, 向视频共享业务服务器 AS发送离开通话 的请求信息; At this step, the telephone terminal A and the telephone terminal B have established a video call through their respective set top boxes. The signaling flow of releasing the voice and video call after one party hangs up is described below: Step 313: The telephone terminal A hangs up and sends the request information for leaving the call to the video sharing service server AS.
步骤 314:视频共享业务服务器 AS向电话终端 A返回对所述离开通话 请求信息的 200 OK响应; Step 314: The video sharing service server AS returns a 200 OK response to the leaving call request information to the telephone terminal A.
步骤 315:视频共享业务服务器 AS向电话终端 B发送通知其离开通话 的消息; Step 315: The video sharing service server AS sends a message to the telephone terminal B notifying that it left the call;
步骤 316: 电话终端 B向视频共享业务服务器 AS返回通知其离开通话 消息的 200 OK响应; Step 316: The telephone terminal B returns to the video sharing service server AS a 200 OK response notifying that it left the call message;
至此步骤语音通话结束。 At this point, the voice call ends.
步骤 317:视频共享业务服务器 AS向机顶盒 A发送通知其离开的消息; 步骤 318:机顶盒 A向视频共享业务服务器 AS返回通知其离开消息的 200 OK响应; Step 317: The video sharing service server AS sends a message to the set top box A to notify it to leave; Step 318: The set top box A returns a 200 OK response to the video sharing service server AS notifying the leaving message;
步骤 319:视频共享业务服务器 AS向机顶盒 B发送通知其离开的消息; 步骤 320:机顶盒 B向视频共享业务服务器 AS返回通知其离开消息的 200 OK响应。 Step 319: The video sharing service server AS sends a message to the set top box B notifying that it left; Step 320: The set top box B returns a 200 OK response notifying the leaving message to the video sharing service server AS.
至此步骤视频通话结束。 At this point, the video call ends.
上述所有信令流程描述了电话终端 A及电话终端 B建立语音通话,以及 随后分别与电话终端 A和电话终端 B相应的机顶盒 A及机顶盒 B自动建立 视频通话, 以及在一方挂机后释放语音通话机视频通话的整体流程。 下面针对图 4,对中断视频通话后再次发起视频通话的过程进行详细的 说明。 All of the above signaling procedures describe that the telephone terminal A and the telephone terminal B establish a voice call, and then the set-top box A and the set-top box B corresponding to the telephone terminal A and the telephone terminal B respectively automatically establish a video call, and release the voice call machine after one party hangs up. The overall flow of video calls. The following is a detailed description of the process of initiating a video call after interrupting the video call for FIG. 4 .
图 4为中断视频通话后再次发起视频通话的逻辑流程图: Figure 4 is a logic flow diagram for initiating a video call after interrupting a video call:
步骤 401 : 语音通话保持畅通, 视频通话中断; Step 401: The voice call remains unblocked, and the video call is interrupted;
步骤 402: 电话终端 A用户及电话终端 B用户任一方需要再次建立视 频通话;
步骤 403: 电话终端 A的用户 (或电话终端 B的用户)对关联的机顶 盒 A (或机顶盒 B )作出相应操作, 向机顶盒 B (或机顶盒 A )发起建立视 频通话的请求; Step 402: The user of the telephone terminal A and the user of the telephone terminal B need to establish a video call again; Step 403: The user of the telephone terminal A (or the user of the telephone terminal B) performs a corresponding operation on the associated set top box A (or the set top box B), and initiates a request for establishing a video call to the set top box B (or the set top box A);
步骤 404: 机顶盒 B (或机顶盒 A )接收到建立视频通话的请求后, 确 认建立视频通话请求; Step 404: After receiving the request for establishing a video call, the set top box B (or the set top box A) confirms that the video call request is established;
步骤 405: 通过视频共享业务服务器建立视频通话。 Step 405: Establish a video call through the video sharing service server.
关于建立视频通话的具体流程请参考上述流程, 这里不再赘述。 For the specific process of establishing a video call, please refer to the above process, and details are not described here.
为实现本发明提出的语音视频通话方法, 本发明实施例提供一种语音 视频通话的方法及系统, 该系统包括: To implement the voice and video call method provided by the present invention, an embodiment of the present invention provides a method and system for voice video call, where the system includes:
关联关系设置单元, 用于设置语音呼叫终端与机顶盒之间的关联关系; 机顶盒获取单元, 用于在视频共享业务服务器在接收到语音通话请求 后, 根据所述语音呼叫终端与机顶盒之间的关联关系, 获取与主被叫方的 语音呼叫终端关联的机顶盒信息; An association relationship setting unit, configured to set an association relationship between the voice call terminal and the set top box; the set top box acquiring unit, configured to: after the video sharing service server receives the voice call request, according to the association between the voice call terminal and the set top box Relationship, obtaining set top box information associated with a voice call terminal of the calling party;
视频通话建立单元, 用于通过与主被叫方的语音呼叫终端关联的机顶 盒建立主被叫方的视频通话。 A video call establishing unit is configured to establish a video call of the calling party and the called party through a set top box associated with the voice call terminal of the calling party.
本发明实施例提供的系统的各模块都是为实现本发明提出的语音视频 通话方法各步骤流程而设, 其功能都可从上述方法实施例中的各步骤中直 接导出, 为节省篇幅, 此处不再赘述。 The modules of the system provided by the embodiment of the present invention are all configured to implement the steps of the voice video calling method proposed by the present invention, and the functions thereof can be directly derived from the steps in the foregoing method embodiments, so as to save space, I won't go into details here.
本发明提供的系统打破了现有技术中只能釆用专业设备进行视屏通话 的限制, 为普通用户实现视屏通话提供了很大的便利。 The system provided by the invention breaks the limitation of using the professional device to perform video call in the prior art, and provides great convenience for the ordinary user to realize the video call.
以上内容是结合具体的实施方式对本发明所作的进一步详细说明, 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的 普通技术人员来说, 在不脱离本发明构思的前提下, 还可以做出若干简单 推演或替换, 都应当视为属于本发明的保护范围。
The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. It is to be understood by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the invention.
Claims
1、 一种语音视频通话的方法, 其特征在于, 该方法包括以下步骤: 设置语音呼叫终端与机顶盒之间的关联关系; A method for voice and video call, the method comprising the steps of: setting an association relationship between a voice call terminal and a set top box;
视频共享业务服务器在接收到语音通话请求后, 根据所述语音呼叫终 端与机顶盒之间的关联关系, 获取与主被叫方的语音呼叫终端关联的机顶 通过与主被叫方的语音呼叫终端关联的机顶盒建立主被叫方的视频通 话。 After receiving the voice call request, the video sharing service server acquires, according to the association relationship between the voice call terminal and the set top box, the set top associated with the voice call terminal of the calling party and the voice call terminal of the calling party and the called party. The associated set top box establishes a video call between the calling party and the called party.
2、 如权利要求 1所述的方法, 其特征在于, 所述视频共享业务服务器 部署在 IP多媒体子系统(IMS ) 网络域内。 2. The method of claim 1, wherein the video sharing service server is deployed in an IP Multimedia Subsystem (IMS) network domain.
3、 如权利要求 1所述的方法, 其特征在于, 所述机顶盒作为会话初始 协议(SIP )终端接入注册到 IMS网络, 并且所述机顶盒在开机时同时注册 到核心网。 3. The method according to claim 1, wherein the set top box is registered as a Session Initiation Protocol (SIP) terminal to the IMS network, and the set top box is simultaneously registered to the core network when the device is powered on.
4、 如权利要求 1所述的方法, 其特征在于, 在所述视频共享业务服务 器上设置所述语音呼叫终端与机顶盒之间的关联关系。 4. The method according to claim 1, wherein an association relationship between the voice call terminal and the set top box is set on the video sharing service server.
5、 如权利要求 1所述的方法, 其特征在于, 所述视频共享业务服务器 与呼叫会话控制功能(CSCF ) 关联, CSCF接收到主叫方的语音通话请求 信息后转发给所述视频共享业务服务器, 由所述视频共享业务服务器将所 述语音通话请求信息发送给被叫方。 The method according to claim 1, wherein the video sharing service server is associated with a call session control function (CSCF), and the CSCF forwards the voice call request information of the calling party to the video sharing service. The server sends the voice call request information to the called party by the video sharing service server.
6、 如权利要求 5所述的方法, 其特征在于, 所述视频共享业务服务器 接收到主被叫方语音呼叫终端对所述语音通话请求信息的确认信息后, 分 别向与主被叫方语音呼叫终端关联的机顶盒发送视频通话请求信息。 The method according to claim 5, wherein, after receiving the confirmation information of the voice call request information by the calling party and the called party, the video sharing service server separately reports the voice to the calling party and the called party. The set top box associated with the calling terminal sends video call request information.
7、 如权利要求 6所述的方法, 其特征在于, 所述视频共享业务服务器 接收到与主被叫方语音呼叫终端关联的机顶盒发送的对所述视频通话请求 信息的确认信息后建立主被叫方的视频通话。 The method according to claim 6, wherein the video sharing service server receives the confirmation information of the video call request information sent by the set top box associated with the main called party voice call terminal, and then establishes the main being Call the party's video call.
8、 如权利要求 1所述的方法, 其特征在于, 建立好的主被叫方视频通 话在中断后, 由主被叫方任一方再次发起视频通话。 8. The method of claim 1 wherein, after the established primary and called party video calls are interrupted, the primary called party initiates a video call again.
9、 如权利要求 8所述的方法, 其特征在于, 所述由主被叫方再次发起 视频通话包括主叫方 (或被叫方)操作关联的机顶盒发起视屏通话请求, 被叫方 (或主叫方)确认后建立视频通话。 9. The method according to claim 8, wherein the calling party that initiates the video call by the calling party and the calling party (or the called party) operates to initiate a video call request, the called party (or The calling party) establishes a video call after confirmation.
10、 一种语音视频通话的系统, 其特征在于, 所述系统包括: 关联关系设置单元, 用于设置语音呼叫终端与机顶盒之间的关联关系; 机顶盒获取单元, 用于在视频共享业务服务器在接收到语音通话请求 后, 根据所述语音呼叫终端与机顶盒之间的关联关系, 获取与主被叫方的 语音呼叫终端关联的机顶盒信息; A system for voice and video calls, the system comprising: an association relationship setting unit, configured to set an association relationship between a voice call terminal and a set top box; and a set top box acquisition unit, configured to be in a video sharing service server After receiving the voice call request, acquiring, according to the association relationship between the voice call terminal and the set top box, the set top box information associated with the voice call terminal of the calling party and the called party;
视频通话建立单元, 用于通过与主被叫方的语音呼叫终端关联的机顶 盒建立主被叫方的视频通话。 A video call establishing unit is configured to establish a video call of the calling party and the called party through a set top box associated with the voice call terminal of the calling party.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201010602933.X | 2010-12-23 | ||
CN201010602933XA CN102036048A (en) | 2010-12-23 | 2010-12-23 | Method and system for voice and video calls |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012083606A1 true WO2012083606A1 (en) | 2012-06-28 |
Family
ID=43888286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/071146 WO2012083606A1 (en) | 2010-12-23 | 2011-02-21 | Method and system for audio and video conversations |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN102036048A (en) |
WO (1) | WO2012083606A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102984492B (en) * | 2012-11-19 | 2016-01-06 | 中国联合网络通信集团有限公司 | Visual telephone processing method and equipment |
CN103595950A (en) * | 2013-11-21 | 2014-02-19 | 东方有线网络有限公司 | Method for carrying out video communication based on cable digital television set top box |
CN106487745B (en) * | 2015-08-25 | 2020-10-16 | 中国移动通信集团重庆有限公司 | Method, device and terminal for completing registration, conversation and switching through external equipment |
CN106658448B (en) * | 2016-11-30 | 2021-05-25 | Tcl科技集团股份有限公司 | Voice communication method and device |
CN108833434B (en) * | 2018-07-02 | 2020-09-08 | 山东云缦智能科技有限公司 | Method for realizing cross-network video call system based on IP bidirectional network set top box |
CN111355915B (en) * | 2018-12-20 | 2021-07-09 | 中国移动通信集团山东有限公司 | Video call method and system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1767630A (en) * | 2004-10-25 | 2006-05-03 | 阿尔卡特公司 | Method for establishing an IP video-conference using a telephone network for voice transmission |
CN101277343A (en) * | 2007-03-30 | 2008-10-01 | 华为技术有限公司 | Method, terminal and system for implementing video binding in voice communication network |
CN101540870A (en) * | 2009-04-22 | 2009-09-23 | 中兴通讯股份有限公司 | Realization method of video call service |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070250845A1 (en) * | 2006-03-31 | 2007-10-25 | Sbc Knowledge Ventures, L.P. | System and method of delivering calls |
US20080125098A1 (en) * | 2006-11-03 | 2008-05-29 | Sbc Knowledge Ventures, Lp | System and method of providing call information |
CN101888516A (en) * | 2009-05-13 | 2010-11-17 | 中兴通讯股份有限公司 | Method and system for realizing video communication |
-
2010
- 2010-12-23 CN CN201010602933XA patent/CN102036048A/en active Pending
-
2011
- 2011-02-21 WO PCT/CN2011/071146 patent/WO2012083606A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1767630A (en) * | 2004-10-25 | 2006-05-03 | 阿尔卡特公司 | Method for establishing an IP video-conference using a telephone network for voice transmission |
CN101277343A (en) * | 2007-03-30 | 2008-10-01 | 华为技术有限公司 | Method, terminal and system for implementing video binding in voice communication network |
CN101540870A (en) * | 2009-04-22 | 2009-09-23 | 中兴通讯股份有限公司 | Realization method of video call service |
Also Published As
Publication number | Publication date |
---|---|
CN102036048A (en) | 2011-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5628296B2 (en) | Session push transmission | |
CN101766004B (en) | Method and system for the provision of communication session control in a local area network | |
US20090232129A1 (en) | Method and apparatus for video services | |
US8072968B2 (en) | Method and apparatus for supporting multiple active sessions on a per user basis | |
CN105530389B (en) | Voice leaving method and device based on IMS network | |
WO2012083606A1 (en) | Method and system for audio and video conversations | |
US7440445B1 (en) | Method and apparatus for storing and activating universal resource locators and phone numbers | |
JP2009246994A (en) | Method for providing early-media service based on session initiation protocol, and application server for providing early-media service based on session initiation protocol | |
WO2010075696A1 (en) | System and method for supporting the share of mobile phone tv programs | |
CN104348989A (en) | Call switching method between set top box and call terminal, and application server | |
WO2015062454A1 (en) | Audio and video call method, device and system | |
WO2009033401A1 (en) | A communication method, system and service controlling function entity | |
WO2014063511A1 (en) | Monitoring method and internet protocol television set top box | |
CN103595948B (en) | The adaptive video call system of resolution ratio and method | |
US9246695B2 (en) | Method and apparatus for providing virtual closed circuit television | |
EP2627100A1 (en) | Method and device for displaying information | |
WO2008148326A1 (en) | Method, system, business agent and terminal for realizing convergence business | |
CN101159841A (en) | Set up box with SIP based video telephone function and implementing method thereof | |
US8275828B1 (en) | Method and apparatus for providing high security video session | |
WO2010091567A1 (en) | System and method for switching click to dial service to multimedia conference service | |
CN102082961A (en) | Method and system for realizing voice talkback of set top box | |
US8867524B1 (en) | Method and apparatus for activating an incoming call voice session on a video display device | |
US8611258B1 (en) | Method and apparatus for integrating video and instant messaging application sessions | |
WO2007109950A1 (en) | A method and system for realizing speech interaction | |
US7623647B1 (en) | Method and apparatus for using voice commands to activate network based service logic |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11850981 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11850981 Country of ref document: EP Kind code of ref document: A1 |