WO2011134172A1 - 建立联合会话的方法、设备及系统 - Google Patents
建立联合会话的方法、设备及系统 Download PDFInfo
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- WO2011134172A1 WO2011134172A1 PCT/CN2010/072390 CN2010072390W WO2011134172A1 WO 2011134172 A1 WO2011134172 A1 WO 2011134172A1 CN 2010072390 W CN2010072390 W CN 2010072390W WO 2011134172 A1 WO2011134172 A1 WO 2011134172A1
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- WIPO (PCT)
- Prior art keywords
- media stream
- remote
- controlled
- information
- session establishment
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1046—Call controllers; Call servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
- H04L65/4046—Arrangements for multi-party communication, e.g. for conferences with distributed floor control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
Definitions
- the present invention relates to the field of communications, and in particular, to a method, device, and system for establishing a joint session. Background technique
- a multimedia session consists of a set of multimedia senders and receivers and their data flows between each other.
- UEs User Equipment
- a UE that initiates control operations such as media switching, adding, and modifying is referred to as a control UE, and the remaining UEs are referred to as controlled UEs.
- SDP Sess Descr iption Protocol
- SIP Session Initiation Protocol
- the control UE when the media stream connection between the UE and the remote UE is established, the control UE sends the request information : all or part of the media stream is switched to the controlled UE.
- the control UE can switch the media stream to the controlled UE to implement the establishment of the joint session.
- the embodiments of the present invention provide a method, device, and system for establishing a joint session.
- the technical solution is as follows:
- a method of establishing a joint session comprising:
- the network control device receives a session establishment request that controls the user equipment UE to carry the media stream description information
- the network control device establishes, according to the received media stream description information carried in the session establishment request, a media stream between the remote UE and the remote UE, and establishes and is remote on the controlled UE.
- the media stream between the UEs is established, according to the received media stream description information carried in the session establishment request, a media stream between the remote UE and the remote UE, and establishes and is remote on the controlled UE.
- control user equipment UE includes:
- a sending module configured to send a session establishment carrying a media stream description information to the network control device And obtaining, by the network control device, a media stream between the remote UE and the remote UE according to the media flow description information, and establishing, with the remote UE, the controlled UE Media flow between
- a establishing module configured to establish, by the network control device, a media stream between the remote UE and the remote UE.
- a network control device is also provided, where the network control device includes:
- a receiving module configured to receive a session establishment request that controls the user equipment UE to carry the media stream description information
- a establishing module configured to establish, according to the media stream description information carried in the session establishment request received by the receiving module, a media stream between the remote UE and the remote UE, and in the A media stream between the remote UE and the remote UE is established on the controlling UE.
- a system for establishing a joint session comprising: controlling a user equipment UE and a network control device;
- the control UE is the foregoing control UE
- the network control device is the above network control device.
- the media stream description information is carried in the session establishment request sent by the control UE to the network control device, and is used to indicate that the media stream between the UE and the remote UE is established on the control UE, and the remote UE is established on the controlled UE.
- the media stream so that the network control device can simultaneously establish a media stream with the remote UE on the control UE and the controlled UE according to the media stream description information, so that the media stream is simultaneously established on different UEs.
- FIG. 1 is a flowchart of a method for establishing a joint session according to Embodiment 1 of the present invention
- FIG. 2 is a flowchart of a method for establishing a joint session according to Embodiment 2 of the present invention
- FIG. 3 is a flowchart of a method for establishing a joint session according to Embodiment 3 of the present invention.
- FIG. 4 is a schematic structural diagram of a control user equipment according to Embodiment 4 of the present invention.
- FIG. 5 is a schematic structural diagram of a network control device according to Embodiment 5 of the present invention
- 6 is a schematic structural diagram of a setup module in a network control device according to Embodiment 5 of the present invention
- FIG. 7 is a schematic structural diagram of another setup module in a network control device according to Embodiment 5 of the present invention
- FIG. 8 is a schematic structural diagram of a system for establishing a joint session according to Embodiment 6 of the present invention. detailed description
- this embodiment provides a method for establishing a joint session, and the process of the method is as follows:
- the network control device receives a session establishment request that is sent by the UE and carries the media stream description information, where the media stream description information is used to indicate that the media stream between the UE and the remote UE is established on the control UE, and is established on the controlled UE.
- the network control device establishes, according to the media stream description information carried in the received session establishment request, a media stream between the remote UE and the remote UE, and establishes a medium between the remote UE and the remote UE. flow.
- the media stream description information includes address information of the controlled UE, and is used to indicate that the media stream is established on the controlled UE.
- the C_line (Connetcion Date) in the SDP is used to indicate the address established by the media stream.
- C-line includes network type, address type and specific address, while network type defines IN (Intelligent Network), PSTN (Public Switched Telephone Network), and address type defines IPV4 (Internet Protocol). Vers ion 4, Internet Protocol version 4) and IPV6 (Internet Protocol vers ion 6, Internet Protocol version 6). Therefore, in order to make the media stream description information include the address information of the controlled UE, in the method provided in this embodiment, a new network type and a new address type are defined in the connection information C-line in the session description protocol SDP. The new network type and the new address type describe the address information of the controlled UE.
- the defined new network type may be: "SIP”, or “URL (Universal Resource Locator)", or “"TEL”, or “URI (Universal Resource Indicator, global) Uniform resource indication”;
- the network control device establishes, according to the media stream description information carried in the received session establishment request, the media stream between the remote UE and the remote UE, including:
- the media stream information on the controlled UE and the media stream information on the remote UE are respectively obtained, and the obtained media stream information on the controlled UE is sent to the remote UE, and the obtained media stream on the remote UE is obtained.
- the information is sent to the controlled UE.
- the method provided in this embodiment by controlling the UE to carry the media stream description information in the session establishment request sent to the network control device, is used to indicate that the media stream between the remote UE and the remote UE is established on the control UE, and is in the controlled UE.
- Establishing a media stream with the remote UE so that the network control device can establish a media stream with the remote UE at the same time on the control UE and the controlled UE according to the media stream description information, so that the media stream is different.
- the UE is established at the same time. Further, the signaling control can be maintained on the controlling UE.
- Embodiment 2 Embodiment 2
- the embodiment provides a method for establishing a joint session, which is to carry the address information of the controlled UE by defining a new network type, a new address type, and a corresponding address in the Clone of the SDP, so that the network control device is enabled. And establishing, according to the media stream description information carried in the received session establishment request, the media stream between the remote UE and the remote UE, including:
- the network control device sends a session establishment request to the controlled UE, and acquires media stream information on the controlled UE according to the session establishment response returned by the controlled UE;
- the obtained media stream information on the controlled UE is sent to the remote UE in the session establishment request, and the media stream information on the remote UE is obtained according to the session establishment response returned by the remote UE.
- 201 Controlling, by the UE, a SIP INVITE request to establish a joint session to the SCC AS, where the request carries media stream description information, where the media stream description information is used to indicate that the media stream between the UE and the remote UE is established on the control UE, and Establishing a media stream between the UE and the remote UE on the controlled UE;
- the content of the SIP INVITE request in this step can be as shown in Table 1 below: Table 1
- INVITE SIP a3o)exam lel. net; SIP/2.0
- the SCC AS After receiving the SIP INVITE request for establishing the joint session, the SCC AS sends a SIP INVITE request to the controlled UE on behalf of the remote UE to establish a media connection of the Media_B on the controlled UE.
- the content of the SIP INVITE request in this step can be as shown in Table 2 below:
- INVITEs ip: a2Sexamplel. net; gr urn: uuid: f 81d4f ae- -7dec -lldO- -a765-00a0c
- the controlled UE After receiving the SIP INVITE request, the controlled UE replies with a SIP 183 (Session Progress) response, where the response carries an SDP answer including the IP address, port number, media codec, and the like of the controlled UE;
- SIP 183 Session Progress
- the content of the 183 response in this step can be as shown in Table 3 below:
- the SCC AS After receiving the response returned by the controlled UE, the SCC AS sends an INVITE request to the remote UE, where the INVITE request carries the IP address, port number, media codec, and the like information of the controlled UE and the control UE.
- the remote UE replies to the control UE with a SIP 200 OK response, where the response carries an SDP answer of the remote UE's IP address, port number, media codec, and the like;
- the SCC AS receives the response of the remote UE, and refreshes the media stream information of the controlled UE.
- the controlled UE replies to the SIP 200 OK response.
- the joint session is successfully established, the signaling control is maintained on the control UE, the Media-A is established between the control UE and the remote UE, and the Media-B is established between the controlled UE and the remote UE.
- the session establishment request sent by the control UE to the SCC AS carries the media stream description information, and is used to indicate that the remote UE is established on the controlled UE and the control UE.
- the media stream is between the SCC AS and the SCC AS to establish a media stream with the remote UE simultaneously on the controlled UE and the control UE according to the media stream description information, so that the media stream is established simultaneously on different UEs.
- This embodiment provides a method for establishing a joint session.
- the application scenario of establishing a joint session as described in the second embodiment is taken as an example.
- a new network type, a new address type, and a corresponding one are defined in the Clone of the SDP.
- the network control device establishes a media stream between the UE and the remote UE according to the media stream description information carried in the received session establishment request, and specifically includes:
- the network control device sends a session establishment request to the remote UE, and obtains media stream information on the remote UE according to the session establishment response returned by the remote UE;
- the obtained media stream information on the controlled UE is sent to the remote UE.
- the UE is configured to send a SIP INVITE request for establishing a joint session to the SCC AS, where the request carries the media stream description information, where the media stream between the remote UE and the remote UE is established on the control UE, and is established on the controlled UE.
- the content of the SIP INVITE request in this step can be as shown in Table 4 below:
- INVITE SIP a3o)exam lel. net; SIP/2.0
- P-Pref erred-Service urn: urn-7: 3gpp-service. ims. ics i. mmtel
- the SCC AS forwards the SIP INVITE request to the remote UE.
- the content of the SIP INVITE request in this step can be as shown in Table 5 below:
- INVITE sip a3aexamplel. net; SIP/2.0
- the remote UE replies with a SIP lxx or 200 OK response, and carries an SDP answer including the IP address, port number, media codec, and the like of the remote UE.
- the SCC AS sends a S IP INVITE request to the controlled UE to establish a media connection of the Media_B on the controlled UE.
- the content of the SIP INVITE request in this step may be as shown in Table 6 below: Table 6
- INVITEs ip: a2o)exam lel. net; gr urn: and id: f 81d4f ae-7dec-lld0-a765-00a0c 91e6bf6 SIP/2.0
- the controlled UE replies to the SIP 183 (Ses s ion Progres s) response and carries the SDP answer to the media-B;
- the SIP 183 response should include the media stream information on the controlled UE, including the port that establishes the media stream on the controlled UE, por t yy, and the IP address, media codec and other information.
- the SCC AS returns a SIP lxx/2xx response to the control UE, where the response carries the SDP answer.
- the SDP answer includes the media stream information of the remote UE (the IP address, port number, media codec, etc. of the remote UE). ).
- the SCC AS sends a SIP re_INVITE/UPDATE request to the remote UE, where the request carries the media stream information of the controlled UE, so as to refresh the SDP offer of the media-B on the remote UE, and set the attribute to sendrecv;
- the remote UE After the remote UE refreshes, it responds to the SIP 200 0K response.
- the joint session is successfully established, the signaling control is maintained on the control UE, and the Media-A is established between the control UE and the remote UE, and the Med i a-B is established between the controlled UE and the remote UE.
- the session establishment request sent by the control UE to the SCC AS carries the media stream description information, which is used to indicate that the media stream is established on the controlled UE, so that the media stream is established on the controlled UE.
- the SCC AS may establish a media stream with the remote UE at the same time on the control UE and the controlled UE according to the media stream description information, so that the media stream is established simultaneously on different UEs.
- this embodiment provides a control UE, where the control UE includes:
- the sending module 401 is configured to send, to the network control device, a session establishment request that carries the media stream description information, where the media stream description information is used to indicate that the media stream between the remote UE is established on the control UE, and is established on the controlled UE. And the media stream between the remote UE and the remote UE is established on the controlled UE according to the media flow description information, and the media flow between the UE and the remote UE is established on the controlled UE. flow;
- the establishing module 402 is configured to establish, by the network control device, a media stream between the remote UE and the remote UE.
- the media stream description information carried in the session establishment request sent by the sending module 401 includes the address information of the controlled UE, and is used to indicate that the media stream is established on the controlled UE.
- the media stream description information includes the manner of the address information of the controlled UE, including:
- the new network type and the new address type are defined in the connection information C-l ine in the session description protocol SDP, and the address information of the controlled UE is described by the new network type and the new address type.
- the control UE provided by the embodiment provides the media stream description information in the session establishment request by using the method of extending the Cl in the SDP, and is used to indicate that the media stream is established on the controlled UE, so that the network control device can
- the media stream description information is used to establish a media stream between the UE and the controlled UE at the same time, and the media stream is simultaneously established on different UEs. Further, the signaling control can be maintained on the controlling UE.
- this embodiment provides a network control device, where the network control device includes: a receiving module 501, configured to receive a session establishment request for controlling a media stream description information sent by a user equipment UE, where media stream description information is used. Instructing to establish a media stream with the remote UE on the control UE, and establishing a media stream with the remote UE on the controlled UE;
- the establishing module 502 is configured to establish, according to the media stream description information carried in the session establishment request received by the receiving module, the media stream between the remote UE and the remote UE, and establish a remote UE with the remote UE. Media flow between.
- the establishing module 502 is specifically configured to acquire the media stream information on the controlled UE and the media stream information on the remote UE, respectively, when the media stream between the UE and the remote UE is established on the controlled UE, and obtain the The media stream information on the controlled UE is sent to the remote UE, and the obtained media stream information on the remote UE is sent to the controlled UE.
- the module 502 is established, and specifically includes:
- the first obtaining unit 502a is configured to send a session establishment request to the controlled UE, and obtain media stream information on the controlled UE according to the session establishment response returned by the controlled UE.
- the second obtaining unit 502b is configured to carry the media stream information on the controlled UE that is acquired by the first acquiring unit 502a in the session establishment request, and send the information to the remote UE, and obtain the remote end according to the session establishment response returned by the remote UE.
- the first sending unit 502c is configured to collect the media on the remote UE by the second obtaining unit 502b.
- the flow information is sent to the controlled UE.
- the establishing module 502 specifically includes:
- the third obtaining unit 502d is configured to send a session establishment request to the remote UE, and obtain media stream information on the remote UE according to the session establishment response returned by the remote UE.
- the fourth obtaining unit 502e is configured to carry the media stream information on the remote UE acquired by the third obtaining unit 502d in the session establishment request, and send the information to the controlled UE, and obtain the controlled according to the session establishment response returned by the controlled UE.
- the second sending unit 502f is configured to send the media stream information on the controlled UE acquired by the fourth obtaining unit 502e to the remote UE.
- the network control device receives a session establishment request that carries the media stream description information sent by the UE, and establishes a media flow between the UE and the controlled UE simultaneously on the control UE and the controlled UE according to the media stream description information. So that the media stream is established simultaneously on different UEs. Further, the signaling control can be maintained on the controlling UE.
- the embodiment provides a system for establishing a joint session, where the system includes: a control UE 801, a network control device 802;
- the control UE such as the control UE, and the network control device 802, which is provided by the foregoing embodiment 4, is the SCC AS, which is not specifically limited in this embodiment.
- the system also includes a controlled UE 803 and a remote UE 804.
- the session establishment request sent by the control UE to the network control device carries the media stream description information indicating that the media stream is established on the controlled UE, by using the method of extending the C-l ine in the SDP.
- the network control device can be configured to simultaneously establish a media stream with the remote UE on the UE and the controlled UE according to the media stream description information, so as to establish a media stream on different UEs at the same time.
- control UE provided by the foregoing embodiment is only illustrated by the division of each functional module in the establishment of the joint session. In actual applications, the function allocation may be completed by different functional modules as needed.
- the internal structure of the device is divided into different functional modules to perform all or part of the functions described above.
- system for establishing a joint session, the network control device, and the method for establishing a joint session provided by the foregoing embodiments are in the same concept. For details, refer to the method embodiment, and details are not described herein again.
- the serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.
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Description
说 明 书 建立联合会话的方法、 设备及系统 技术领域
本发明涉及通信领域, 特别涉及一种建立联合会话的方法、 设备及系统。 背景技术
在 SIP ( Ses s ion Ini t iat ion Protocol , 会话初始协议) 中, 多媒体会话 是由一组多媒体发送者和接受者及其彼此之间的数据流组成的。联合会话场景 中, 本地端有两个或以上的 UE ( User Equipment , 用户设备)。 发起媒体切换、 添加、 修改等控制操作的 UE称为控制 UE, 其余 UE称为被控 UE。 描述多媒体 会话时, 釆用携带于 SIP协议中使用的 SDP ( Ses s ion Descr ipt ion Protocol , 会话描述协议)应用层协议。
现有技术在控制 UE和远端 UE间已建立媒体流连接时, 控制 UE发出请求信息 : 将全部或者部分媒体流切换到被控 UE上建立。
在实现本发明的过程中, 发明人发现现有技术至少存在以下缺点: 仅在媒体流切换场景下, 控制 UE才能将媒体流切换到被控 UE上, 实现联 合会话的建立。 发明内容
为了解决现有技术存在的缺点, 本发明实施例提供了一种建立联合会话的 方法、 设备及系统。 所述技术方案如下:
一方面, 提供了一种建立联合会话的方法, 所述方法包括:
网络控制设备接收控制用户设备 UE发送的携带媒体流描述信息的会话建 立请求;
所述网络控制设备根据接收到的所述会话建立请求中携带的所述媒体流 描述信息, 在所述控制 UE上建立与远端 UE之间的媒体流, 并在被控 UE上建 立与远端 UE之间的媒体流。
另一方面, 还提供了一种控制用户设备 UE, 所述控制 UE包括:
发送模块, 用于向网络控制设备发送携带媒体流描述信息的会话建立请
求, 使所述网络控制设备根据所述媒体流描述信息, 在所述控制 UE上建立与 所述远端 UE之间的媒体流, 并在所述被控 UE上建立与所述远端 UE之间的媒 体流;
建立模块, 用于通过所述网络控制设备建立与所述远端 UE之间的媒体流。 还提供了一种网络控制设备, 所述网络控制设备包括:
接收模块, 用于接收控制用户设备 UE发送的携带媒体流描述信息的会话 建立请求;
建立模块, 用于根据所述接收模块接收到的所述会话建立请求中携带的所 述媒体流描述信息, 在所述控制 UE上建立与远端 UE之间的媒体流, 并在所述 被控 UE上建立与所述远端 UE之间的媒体流。
还提供了一种建立联合会话的系统, 所述系统包括: 控制用户设备 UE和 网络控制设备;
所述控制 UE为上述控制 UE;
所述网络控制设备为上述网络控制设备。
本发明实施例提供的技术方案的有益效果是:
通过在控制 UE向网络控制设备发送的会话建立请求中携带媒体流描述信 息, 用于指示在控制 UE上建立与远端 UE之间的媒体流, 并在被控 UE上建立 与远端 UE之间的媒体流, 从而使网络控制设备可根据媒体流描述信息, 在控 制 UE和被控 UE上同时建立与远端 UE之间的媒体流, 实现媒体流在不同的 UE 上同时建立。 附图说明
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所 需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明 的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明实施例一提供的建立联合会话的方法流程图;
图 2是本发明实施例二提供的建立联合会话的方法流程图;
图 3是本发明实施例三提供的建立联合会话的方法流程图;
图 4是本发明实施例四提供的控制用户设备结构示意图;
图 5是本发明实施例五提供的网络控制设备结构示意图;
图 6是本发明实施例五提供的网络控制设备中的建立模块结构示意图; 图 7是本发明实施例五提供的网络控制设备中的另一种建立模块结构示意 图;
图 8是本发明实施例六提供的建立联合会话的系统结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明 实施方式作进一步地详细描述。
实施例一
参见图 1, 本实施例提供了一种建立联合会话的方法, 该方法流程具体如 下:
101: 网络控制设备接收控制 UE发送的携带媒体流描述信息的会话建立请 求, 该媒体流描述信息用于指示在控制 UE上建立与远端 UE之间的媒体流, 并 在被控 UE上建立与远端 UE之间的媒体流;
102: 网络控制设备根据接收到的会话建立请求中携带的媒体流描述信息, 在控制 UE上建立与远端 UE之间的媒体流, 并在被控 UE上建立与远端 UE之间 的媒体流。
具体地, 媒体流描述信息包含被控 UE的地址信息, 用于指示在被控 UE上 建立媒体流。
SDP 中的 C_line (Connetcion Date, 连接信息)用来指示媒体流建立的 地址。 其中, C-line包括网络类型、 地址类型及具体地址, 而网络类型定义了 IN ( Intelligent Network, 智能网)、 PSTN ( Public Switched Telephone Network, 公共交换电话网络), 地址类型定义了 IPV4 ( Internet Protocol vers ion 4, 网际协议版本 4 )和 IPV6 ( Internet Protocol vers ion 6, 网 际协议版本 6)。 因此, 为了使媒体流描述信息中包含被控 UE的地址信息, 本 实施例提供的方法中, 在会话描述协议 SDP中的连接信息 C-line中定义新的 网络类型和新的地址类型, 通过新的网络类型和新的地址类型描述被控 UE 的 地址信息。
本实施例不对定义的新的网络类型及新的地址类型进行限定, 例如, 定义 的新的网络类型可以为: "SIP", 或 "URL (Universal Resource Locator, 统 一资源定位符)", 或 "TEL", 或 "URI ( Universal Resource Indicator,全球
统一资源指示"; 定义的新的地址类型可以为: "SIPURI " , 或 "SIPSURI" , 或 "TELURI" , 用于指示 SIP或 SIPS类型的地址, 则扩展后的 C-l ine可以为: c=SIP SIPURI s ip: mediaserver. example. net;
i^c=SIP SIPSURI s ips: secure-s treamSmediaserver. example, net ;
或 c=URL SIPURI s ip: s treamSmediaserver. example, net ;
或 c=URL SIPSURI s ips: secure-s treamSmediaserver. example, net;
或 c=TEL TELURI tel: +1-201- 555- 0123。
进一步地, 网络控制设备根据接收到的会话建立请求中携带的媒体流描述 信息, 在被控 UE上建立与远端 UE之间的媒体流, 具体包括:
分别获取被控 UE上的媒体流信息和远端 UE上的媒体流信息, 并将获取到 的被控 UE上的媒体流信息发送给远端 UE,将获取到的远端 UE上的媒体流信息 发送给被控 UE。
本实施例提供的方法, 通过控制 UE在向网络控制设备发送的会话建立请 求中携带媒体流描述信息,用于指示在控制 UE上建立与远端 UE之间的媒体流, 并在被控 UE上建立与远端 UE之间的媒体流,从而使网络控制设备可根据媒体 流描述信息, 在控制 UE与被控 UE上同时建立与远端 UE之间的媒体流, 实现 媒体流在不同的 UE上同时建立。 进一步地, 信令控制可以保持在控制 UE上。 实施例二
本实施例提供了一种建立联合会话的方法, 该方法通过在 SDP 的 C-l ine 中定义新的网络类型、 新的地址类型及对应的地址, 来携带被控 UE 的地址信 息, 使网络控制设备根据接收到的会话建立请求中携带的媒体流描述信息, 在 被控 UE上建立与远端 UE之间的媒体流, 具体包括:
网络控制设备向被控 UE发送会话建立请求, 并根据被控 UE返回的会话建 立响应获取被控 UE上的媒体流信息;
将获取到的被控 UE 上的媒体流信息携带在会话建立请求中发送给远端 UE, 并根据远端 UE返回的会话建立响应获取远端 UE上的媒体流信息;
将获取到的远端 UE上的媒体流信息发送给所述被控 UE。
为了便于说明,本实施例以网络控制设备为 SCC AS ( Service Centra l ized and Cont inui ty AS , 业务集中和连续性服务器), 一个语音媒体流 A在控制 UE Al上建立, IP地址为 192. 0. 2. 5 , SDP的 C- l ine为: m=audio 49170 RTP/AVP 0
83, c=IN IP4192.0.2.5; 一个视频媒体流 B在被控 UE A2上建立, 控制 UE A1 上保存有其 SIP地址: sip: a2S)example2. net; 扩展 SDP的 C_l ine的描述为: m=video 9 RTP/AVP 34, c=URL SIPURI sip: a2Sexample2. net为例, 对本实施 例提供的建立联合会话的方法进行详细描述, 参见图 2, 方法流程具体如下:
201: 控制 UE向 SCC AS发送建立联合会话的 SIP INVITE请求, 该请求中携 带媒体流描述信息, 该媒体流描述信息用于指示在控制 UE上建立与远端 UE之间 的媒体流, 并在被控 UE上建立与远端 UE之间的媒体流;
其中, 该步骤中的 SIP INVITE请求的内容可如下面表 1所示: 表 1
INVITE SIP: a3o)exam lel. net; SIP/2.0
Via: SIP/2.0/UDP 192.0.2.5; comp=s igcomp; branch=z9hG4bKnashds7
Max-Forwards: 70
Route: sip: pcscf 1. homel. net: 7531; lr; comp=s igcomp>,
<s ip: or igSscscf 1. homel. net; lr>P-Pref erred-Ident i ty: " JohnDoe"
<s ip: alSexamplel. net>
P-Access-Network-Inf o:
Privacy: none
From: <sip: alSexamplel. net>; tag=171828
To: <s ip: a3Sexamplel. net>
Call-ID: Cb03a0s09a2sdfglkj490237
Cseq: 127 INVITE
Supported: lOOrel; precondition, gruu, 199
Require: sec—agree, replaces
Proxy-Require: sec—agree
Accept-Contact: *; +g.3gpp. ics i-ref ="urn%3Aurn-7%3gpp-service. ims. ics i. mmtel "
P-Pref er red-Service: urn: urn-7: 3gpp-service. ims. ics i. mmtel
Security-Verify: ipsec-3gpp; q=0.1; alg=hmac-sha-l-96; spi=87654321; portl=7531
如上面表 1所示, 媒体流描述信息中, 第一个连接信息 C-linel为 c=IN IP4 192.0.2.5, 描述的是控制 UE的地址信息; 第二个连接信息 C-line2为 c=URL SIPURI sip: a2aexample2. net, 描述的是被控 UE的地址信息。 设控制 UE上建立 媒体流的端口为 port XX, 但由于控制 UE不确定被控 UE上建立媒体流的端口, 因此, 以 port 9代替, 表示未知。
202: SCC AS收到建立联合会话的 SIP INVITE请求后, 代表远端 UE向被控 UE发送 SIP INVITE请求, 以建立 Media_B在被控 UE上的媒体连接;
其中, 该步骤中的 SIP INVITE请求的内容可如下面表 2所示:
表 2
INVITEs ip: a2Sexamplel. net; gr=urn: uuid: f 81d4f ae- -7dec -lldO- -a765-00a0c
91e6bf6 SIP/2.0
Via:
Record-Route: sip: scc-asShomel. net
To: sip: a2Sexamplel. net;
From: sip: a3Sexamplel. net; tag=acegi
Call-ID:
CSeq:
Max-Forwards:
P-Asser ted-Ident i ty: " remote user " sip: a3Sexamplel. net
Require:
Referred— By: si : alQexamplel. net
Contact:
sip: a3Sexamplel. net; gr=urn: uuid: f 81d4f ae-17oct- -Hal -a678- -0054c91eab cd
Al low:
Content-Type: application/ sdp
Content-Length: (...) v=0
o=_ 1027933615 1027933615 IN IP4 192.0.2.5
s=—
t=0 0
m=audio 0 RTP/AVP 0 8 3
m=video 9 RTP/AVP 34
a=inact ive
c= URL SIPURI sip: a2Qexample2. net
b=AS: 75
a=r tpmap: 98 H263
a=fmtp: 98 prof i le-level-id=0
a=rtpmap: 99 MP4V-ES
203: 被控 UE收到 SIP INVITE请求后, 回复 SIP 183 ( Session Progress ) 响应, 该响应中携带包含被控 UE的 IP地址,端口号,媒体编解码等信息的 SDP answer (应答 ) ;
其中, 该步骤中的 183响应的内容可如下面表 3所示:
表 3
SIP/2.0 183 Session Progress
Via:
To: sip: a2o)exam lel. net; tag=xyzwv
From: sip: a3o)exam lel. net; tag=acegi
Call-ID:
CSeq:
P-Pref erred - 1 dent i ty:
Contact:
sip: a2Sexamplel. net; gr=urn:而 id: f 81d4f ae-7dec-lld0-a765-00a0c91e6bf 6
Allow: INVITE, PRACK, UPDATE
Content-Type: application/ sdp
Content-Length: (...) v=0
o=_ 1027933615 1027933615 IN IP4 192.0.2.5
s=- t=0 0
m=audio 0 RTP/AVP 0 8 3
m=video 1300 RTP/AVP 98
a=inact ive
c=IN IP4 145. 23. 77. 88
b=AS: 75
a=r tpmap: 98 H263
a=fmtp: 98 prof i le-leve l-id=0 如上面表 3所示, 媒体描述信息中, 连接信息 C-l ine为。= IN IP4 145. 23. 77. 88 , 即为被控 UE返回的具体地址信息, 包括了被控 UE建立媒体流的 网络类型 IN, 地址类型 IP4 , 具体地址 145. 23. 77. 88。
204: SCC AS收到被控 UE返回的响应后,向远端 UE发送 INVITE请求,该 INVITE 请求中应携带被控 UE及控制 UE的 IP地址,端口号,媒体编解码等信息;
205-206: 远端 UE向控制 UE回复 SIP 200 OK响应, 该响应中携带远端 UE的 IP地址,端口号,媒体编解码等信息的 SDP answer (应答) ;
207: SCC AS收到远端 UE的响应, 刷新被控 UE上的媒体流信息;
208: 被控 UE回复 SIP 200 OK成功响应。
至此, 联合会话成功建立, 信令控制保持在控制 UE上, Media-A在控制 UE 和远端 UE间建立, Media-B在被控 UE和远端 UE间建立。
本实施例提供的方法,通过扩展 SDP中 C-l ine的方式,使控制 UE向 SCC AS 发送的会话建立请求中携带媒体流描述信息, 用于指示在被控 UE和控制 UE上 建立与远端 UE之间的媒体流, 从而使 SCC AS可根据媒体流描述信息, 在被控 UE与控制 UE上同时建立与远端 UE之间的媒体流, 实现媒体流在不同的 UE上 同时建立。 实施例三
本实施例提供了一种建立联合会话的方法, 同样以实施例二所述的建立联 合会话的应用场景为例, 通过在 SDP的 C-l ine中定义新的网络类型、 新的地 址类型及对应的地址, 来携带被控 UE 的地址信息, 但釆取了与上述实施例二
不一样的建立方式, 网络控制设备根据接收到的会话建立请求中携带的媒体流 描述信息, 在被控 UE上建立与远端 UE之间的媒体流, 具体包括:
网络控制设备向远端 UE发送会话建立请求, 并根据远端 UE返回的会话建 立响应获取远端 UE上的媒体流信息;
将获取到的远端 UE 上的媒体流信息携带在会话建立请求中发送给被控
UE, 并根据被控 UE返回的会话建立响应获取被控 UE上的媒体流信息;
将获取到的被控 UE上的媒体流信息发送给远端 UE。
下面, 对本实施例提供的方法进行详细描述, 参见图 3, 方法流程具体如 下:
301: 控制 UE向 SCC AS发送建立联合会话的 SIP INVITE请求, 该请求中携 带媒体流描述信息, 用于指示在控制 UE上建立与远端 UE之间的媒体流, 并在被 控 UE上建立与远端 UE之间的媒体流;
其中, 该步骤中的 SIP INVITE请求的内容可如下面表 4所示:
表 4
INVITE SIP: a3o)exam lel. net; SIP/2.0
Via: SIP/2.0/UDP 192.0.2.5; comp=s igcomp; branch=z9hG4bKnashds7 Max-Forwards: 70
Route: sip: pcscf 1. homel. net: 7531; lr; comp=s igcomp>,
<s ip: or igSscscf 1. homel. net; lr>
P-Pref erred-Ident i ty: "John Doe" <sip: alSexam lel. net>
P-Access-Network-Inf o:
Privacy: none
From: <sip: alSexamplel. net>; tag=171828
To: <s ip: a3o)exam lel. net>
Call-ID: Cb03a0s09a2sdfglkj490237
Cseq: 127 INVITE
Supported: lOOrel; precondition, gruu, 199
Require: sec—agree, replaces
Proxy-Require: sec—agree
Accept-Contact: *; +g.3gpp. ics i-ref ="urn%3Aurn-7% 3gpp-serv ice. ims. ics i. mmtel "
P-Pref erred-Service: urn: urn-7: 3gpp-service. ims. ics i. mmtel
Security-Verify: ipsec-3gpp; q=0.1; alg=hmac-sha-l-96; spi=87654321; portl=7531
Contact: <s ip: alSexam lel. net; gr=
urn:而 id: f 81d4f ae-7dec-lld0-a765-00a0c91e6bf 6>; +g.3gpp. ics i-ref= "urn%3Aurn-xxx°/o3gpp-service. ims. ics i. mmtel "; +g.3gpp. ics="pr incip al";
Allow: INVITE, ACK, CANCEL, BYE, PRACK, UPDATE
Accept: application/ sdp; ap l icat ion/ 3gpp-ims+xml
Content-Type: application/ sdp
Content-Length: (...) v=0
o=_ 2987933615 2987933615 IN IP4 192.0.2.5
s=
t=0 0
m=audio 49170 RTP/AVP 0 8 3
c=IN IP4 192.0.2.5
a=pcf g: 1 t=l
b=AS: 25.4
a=curr: qos local sendrecv
a=curr: qos remote none
a=des: qos mandatory local sendrecv
a=des: qos none remote sendrecv
a=rtpmap: 97 AMR
a=fmtp: 97 mode-set=0, 2, 5, 7; mode-change-per iod=2
a=r tpmap: 96 telephone-event
a=maxpt ime: 20
m=video 9 RTP/AVP 34
c=URL SIPURI sip: a2Qexample2. net
b=AS: 75
a=r tpmap: 98 H263
a=fmtp: 98 prof i le-level-id=0
a=rtpmap: 99 MP4V-ES 如上面表 4所示, 媒体流描述信息中, 第一个连接信息 C-linel为 c=IN IP4 192.0.2.5, 描述的是控制 UE的地址信息; 第二个连接信息 C-line2为 c=URL SIPURI sip: a2aexample2. net, 描述的是被控 UE的地址信息。 设控制 UE上建立 媒体流的端口为 port XX, 但由于控制 UE不确定被控 UE上建立媒体流的端口, 因此, 以 port 9代替, 表示未知。
302: SCC AS将 SIP INVITE请求转发至远端 UE;
其中, 该步骤中的 SIP INVITE请求的内容可如下面表 5所示:
表 5
INVITE sip: a3aexamplel. net; SIP/2.0
Via:
Record-Route: sip: scc-asShomel. net
To: sip: a3Sexamplel. net;
From: sip: alSexam lel. net; tag=acegi
Call-ID:
CSeq:
Max-Forwards:
P-Asserted-Identi ty:
Require:
Contact: <s ip: alSexam lel. net; gr=
urn:而 id: f 81d4f ae-7dec-lld0-a765-00a0c91e6bf 6>; +g.3gpp. ics i-ref="ur n%3Aurn-xxx°/o3gpp-service. ims. ics i. mmtel "; +g.3gpp. ics="pr incipal " Al low:
Content-Type: application/ sdp
Content-Length: (...)
v=0
o=_ 1027933615 1027933615 IN IP4 192. 0. 2. 5
s=- t=0 0
m=audio 49170 RTP/AVP 0 8 3
c=IN IP4 192. 0. 2. 5
a=pcf g: 1 t=l
b=AS: 25. 4
a=curr: qos loca l sendrecv
a=curr: qos remote none
a=des: qos manda tory loca l sendrecv
a=des: qos none remote sendrecv
a=r tpmap: 97 AMR
a=fmtp: 97 mode-set=0, 2, 5, 7; mode-change-per iod=2
a=r tpmap: 96 te lephone-event
a=maxpt ime: 20
m=video 99 RTP/AVP 34
a=inact ive
c= URL SIPURI s ip: a3Qexample2. net
b=AS: 75
a=r tpmap: 98 H263
a=fmtp: 98 prof i le-leve l-id=0
a=r tpmap: 99 MP4V-ES
303: 远端 UE回复 SIP lxx或 200 OK响应, 携带包含远端 UE的 IP地址,端口 号,媒体编解码等信息的 SDP answer;
304: SCC AS向被控 UE发送 S IP INVITE请求, 以建立 Media_B在被控 UE上的 媒体连接;
其中, 该步骤中的 SIP INVITE请求的内容可如下面表 6所示:
表 6
INVITEs ip: a2o)exam lel. net; gr=urn:而 id: f 81d4f ae-7dec-lld0-a765-00a0c 91e6bf6 SIP/2.0
Via:
Record-Route: sip: scc-asShomel. net
To: sip: a2o)exam lel. net;
From: sip: a3Sexamplel. net; tag=acegi
Call-ID:
CSeq:
Max-Forwards:
P-Asser ted-Ident i ty: " remote user " sip: a3Sexamplel. net
Require:
Referred— By: si : alQexamplel. net
Contact:
sip: a3Sexamplel. net; gr=urn: uuid: f 81d4f ae-17oct-llal-a678-0054c91eab cd
Al low:
Content-Type: application/ sdp
Content-Length: (...) v=0
o=_ 1027933615 1027933615 IN IP4 192.0.2.23
s=—
t=0 0
m=audio 0 RTP/AVP 0 8 3
m=video 4390 RTP/AVP 34
a= sendrecv
c=IN IP4 192.0.2.23
b=AS: 75
a=r tpmap: 98 H263
a=fmtp: 98 prof i le-leve l-id=0
a=r tpmap: 99 MP4V-ES 如上面表 6所示, 媒体描述信息中, 连接信息 C-l inel为 c=IN IP4 192. 0. 2. 23 , 描述的是远端 UE的地址信息, 与被控 UE之间建立媒体流的端口为 r2。
305: 被控 UE回复 SIP 183 ( Ses s ion Progres s )响应,携带对 media- B的 SDP answer;
针对该步骤, SIP 183响应中应包含被控 UE上的媒体流信息, 包括在被控 UE上建立媒体流的端口为 por t yy, 以及 IP地址,媒体编解码等信息。
306: SCC AS向控制 UE返回 SIP lxx/2xx响应, 响应中携带 SDP answer ; 其中, SDP answer中包含远端 UE上的媒体流信息 (远端 UE的 IP地址,端口 号,媒体编解码等信息) 。
307: SCC AS发送 SIP re_INVITE/UPDATE请求至远端 UE,该请求中携带被控 UE的媒体流信息, 以此刷新 media-B在远端 UE上的 SDP offer , 将属性设为 sendrecv;
308: 远端 UE刷新后, 回复 SIP 200 0K响应。
至此, 联合会话成功建立, 信令控制保持在控制 UE上, Media-A在控制 UE和 远端 UE间建立, Med i a-B在被控 UE和远端 UE间建立。
本实施例提供的方法, 通过釆用扩展 SDP中 C-l ine的方式, 使控制 UE向 SCC AS发送的会话建立请求中携带媒体流描述信息, 用于指示在被控 UE上建 立媒体流, 从而使 SCC AS可根据媒体流描述信息, 在控制 UE与被控 UE上同 时建立与远端 UE之间的媒体流, 实现媒体流在不同的 UE上同时建立。 实施例四
参见图 4 , 本实施例提供了一种控制 UE , 该控制 UE包括:
发送模块 401 , 用于向网络控制设备发送携带媒体流描述信息的会话建立 请求, 媒体流描述信息用于指示在控制 UE上建立与远端 UE之间的媒体流, 并 在被控 UE上建立与远端 UE之间的媒体流,使网络控制设备根据媒体流描述信 息, 在控制 UE上建立与远端 UE之间的媒体流, 并在被控 UE上建立与远端 UE 之间的媒体流;
建立模块 402 , 用于通过网络控制设备建立与远端 UE之间的媒体流。 其中,发送模块 401发送的会话建立请求中携带的媒体流描述信息包含被 控 UE的地址信息, 用于指示在被控 UE上建立媒体流。
媒体流描述信息包含被控 UE的地址信息的方式, 包括:
在会话描述协议 SDP中的连接信息 C-l ine中定义新的网络类型和新的地 址类型, 通过新的网络类型和新的地址类型描述被控 UE的地址信息。
本实施例提供的控制 UE , 通过釆用扩展 SDP中 C-l ine的方式, 实现在会 话建立请求中携带媒体流描述信息, 用于指示在被控 UE上建立媒体流, 从而 使网络控制设备可根据媒体流描述信息,在控制 UE与被控 UE上同时建立与远 端 UE之间的媒体流, 实现媒体流在不同的 UE上同时建立。 进一步地, 信令控 制可以保持在控制 UE上。 实施例五
参见图 5 , 本实施例提供了一种网络控制设备, 该网络控制设备包括: 接收模块 501 ,用于接收控制用户设备 UE发送的携带媒体流描述信息的会 话建立请求,媒体流描述信息用于指示在控制 UE上建立与远端 UE之间的媒体 流, 并在被控 UE上建立与远端 UE之间的媒体流;
建立模块 502 , 用于根据接收模块接收到的会话建立请求中携带的媒体流 描述信息, 在控制 UE上建立与远端 UE之间的媒体流, 并在被控 UE上建立与 远端 UE之间的媒体流。
其中, 建立模块 502 , 具体用于在被控 UE上建立与远端 UE之间的媒体流 时, 分别获取被控 UE上的媒体流信息和远端 UE上的媒体流信息, 并将获取到 的被控 UE上的媒体流信息发送给远端 UE,将获取到的远端 UE上的媒体流信息 发送给被控 UE。
参见图 6 , 建立模块 502 , 具体包括:
第一获取单元 502a , 用于向被控 UE发送会话建立请求, 并根据被控 UE 返回的会话建立响应获取被控 UE上的媒体流信息;
第二获取单元 502b ,用于将第一获取单元 502a获取到的被控 UE上的媒体 流信息携带在会话建立请求中发送给远端 UE, 并根据远端 UE返回的会话建立 响应获取远端 UE上的媒体流信息;
第一发送单元 502c ,用于将第二获取单元 502b获取到的远端 UE上的媒体
流信息发送给被控 UE。
可选地, 参见图 7 , 建立模块 502 , 具体包括:
第三获取单元 502d , 用于向远端 UE发送会话建立请求, 并根据远端 UE 返回的会话建立响应获取远端 UE上的媒体流信息;
第四获取单元 502e ,用于将第三获取单元 502d获取到的远端 UE上的媒体 流信息携带在会话建立请求中发送给被控 UE , 并根据被控 UE返回的会话建立 响应获取被控 UE上的媒体流信息;
第二发送单元 502f ,用于将第四获取单元 502e获取到的被控 UE上的媒体 流信息发送给远端 UE。
本实施例提供的网络控制设备, 通过接收控制 UE发送的携带媒体流描述 信息的会话建立请求, 并根据媒体流描述信息在控制 UE与被控 UE上同时建立 与远端 UE之间的媒体流,从而实现媒体流在不同的 UE上同时建立。进一步地, 信令控制可以保持在控制 UE上。 实施例六
参见图 8 , 本实施例提供了一种建立联合会话的系统, 该系统包括: 控制 UE 801、 网络控制设备 802 ;
其中, 控制 UE 801如上述实施例四提供的控制 UE , 网络控制设备 802如 上述实施例五提供的网络控制设备, 具体可以是 SCC AS , 本实施例对此不作具 体限定。
该系统还包括被控 UE 803和远端 UE 804。
本实施例提供的系统, 通过釆用扩展 SDP中 C- l ine的方式, 使控制 UE向 网络控制设备发送的会话建立请求中携带指示在被控 UE上建立媒体流的媒体 流描述信息, 从而使网络控制设备可根据媒体流描述信息, 在控制 UE与被控 UE上同时建立与远端 UE之间的媒体流, 实现在不同的 UE上同时建立媒体流。
需要说明的是: 上述实施例提供的控制 UE在建立联合会话时, 仅以上述 各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上述功能分 配由不同的功能模块完成, 即将设备的内部结构划分成不同的功能模块, 以完 成以上描述的全部或者部分功能。 另外, 上述实施例提供的建立联合会话的系 统、 网络控制设备与建立联合会话的方法实施例属于同一构思, 其具体实现过 程详见方法实施例, 这里不再赘述。
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。 本发明实施例中的部分步骤, 可以利用软件实现, 相应的软件程序可以存 储在可读取的存储介质中, 如光盘或硬盘等。
以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的 精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的 保护范围之内。
Claims
权 利 要 求 书
1、 一种建立联合会话的方法, 其特征在于, 所述方法包括:
网络控制设备接收控制用户设备 UE发送的携带媒体流描述信息的会话建立 请求;
所述网络控制设备根据接收到的所述会话建立请求中携带的所述媒体流描 述信息, 在所述控制 UE上建立与远端 UE之间的媒体流, 并在被控 UE上建立与 远端 UE之间的媒体流。
1、 根据权利要求 1所述的方法, 其特征在于, 所述媒体流描述信息包含所 述被控 UE的地址信息, 用于指示在所述被控 UE上建立媒体流。
3、 根据权利要求 2所述的方法, 其特征在于, 所述媒体流描述信息包含所 述被控 UE的地址信息, 包括:
在会话描述协议 SDP中的连接信息 C-l ine中定义新的网络类型和新的地址 类型, 通过所述新的网络类型和新的地址类型描述所述被控 UE的地址信息。
4、 根据权利要求 3所述的方法, 其特征在于,
所述新的网络类型包括但不限于:会话发起协议 SIP、统一资源定位符 URL、 TEL和全球统一资源指示 URI中的一种;
所述新的地址类型包括但不限于: SIPURI、 SIPSURI和 TELRUI中的一种。
5、 根据权利要求 1所述的方法, 其特征在于, 所述网络控制设备根据接收 到的所述会话建立请求中携带的所述媒体流描述信息, 在所述被控 UE上建立与 所述远端 UE之间的媒体流, 具体包括:
分别获取所述被控 UE上的媒体流信息和所述远端 UE上的媒体流信息, 并 将获取到的所述被控 UE上的媒体流信息发送给所述远端 UE,将获取到的所述远 端 UE上的媒体流信息发送给所述被控 UE。
6、 根据权利要求 1或 5所述的方法, 其特征在于, 所述网络控制设备根据 接收到的所述会话建立请求中携带的所述媒体流描述信息, 在所述被控 UE上建
立与所述远端 UE之间的媒体流, 具体包括:
所述网络控制设备向所述被控 UE发送会话建立请求, 并根据所述被控 UE 返回的会话建立响应获取所述被控 UE上的媒体流信息;
将获取到的所述被控 UE上的媒体流信息携带在会话建立请求中发送给所述 远端 UE , 并根据所述远端 UE返回的会话建立响应获取所述远端 UE上的媒体流 信息;
将获取到的所述远端 UE上的媒体流信息发送给所述被控 UE。
7、 根据权利要求 1或 5所述的方法, 其特征在于, 所述网络控制设备根据 接收到的所述会话建立请求中携带的所述媒体流描述信息, 在所述被控 UE上建 立与所述远端 UE之间的媒体流, 具体包括:
所述网络控制设备向所述远端 UE发送会话建立请求, 并根据所述远端 UE 返回的会话建立响应获取所述远端 UE上的媒体流信息;
将获取到的所述远端 UE上的媒体流信息携带在会话建立请求中发送给所述 被控 UE , 并根据所述被控 UE返回的会话建立响应获取所述被控 UE上的媒体流 信息;
将获取到的所述被控 UE上的媒体流信息发送给所述远端 UE。
8、 一种控制用户设备 UE , 其特征在于, 所述控制 UE包括:
发送模块, 用于向网络控制设备发送携带媒体流描述信息的会话建立请求, 使所述网络控制设备根据所述媒体流描述信息, 在所述控制 UE上建立与所述远 端 UE之间的媒体流, 并在所述被控 UE上建立与所述远端 UE之间的媒体流; 建立模块, 用于通过所述网络控制设备建立与所述远端 UE之间的媒体流。
9、 根据权利要求 8所述的控制 UE , 其特征在于, 所述发送模块发送的会话 建立请求中携带的媒体流描述信息包含所述被控 UE的地址信息, 用于指示在所 述被控 UE上建立媒体流。
1 0、 根据权利要求 9所述的控制 UE, 其特征在于, 所述发送模块发送的会 话建立请求中携带的媒体流描述信息包含所述被控 UE的地址信息, 包括:
在会话描述协议 SDP中的连接信息 C-l ine中定义新的网络类型和新的地址 类型, 通过所述新的网络类型和新的地址类型描述所述被控 UE的地址信息。
11、 一种网络控制设备, 其特征在于, 所述网络控制设备包括:
接收模块, 用于接收控制用户设备 UE发送的携带媒体流描述信息的会话建 立请求;
建立模块, 用于根据所述接收模块接收到的所述会话建立请求中携带的所 述媒体流描述信息, 在所述控制 UE上建立与所述远端 UE之间的媒体流, 并在 所述被控 UE上建立与所述远端 UE之间的媒体流。
12、 根据权利要求 11所述的网络控制设备, 其特征在于, 所述建立模块, 具体用于在所述被控 UE上建立与所述远端 UE之间的媒体流时, 分别获取所述 被控 UE上的媒体流信息和所述远端 UE上的媒体流信息, 并将获取到的所述被 控 UE上的媒体流信息发送给所述远端 UE , 将获取到的所述远端 UE上的媒体流 信息发送给所述被控 UE。
1 3、 根据权利要求 11或 12所述的网络控制设备, 其特征在于, 所述建立 模块, 具体包括:
第一获取单元, 用于向所述被控 UE发送会话建立请求, 并根据所述被控 UE 返回的会话建立响应获取所述被控 UE上的媒体流信息;
第二获取单元, 用于将所述第一获取单元获取到的所述被控 UE上的媒体流 信息携带在会话建立请求中发送给所述远端 UE ,并根据所述远端 UE返回的会话 建立响应获取所述远端 UE上的媒体流信息;
第一发送单元, 用于将所述第二获取单元获取到的所述远端 UE上的媒体流 信息发送给所述被控 UE。
14、 根据权利要求 11或 12所述的网络控制设备, 其特征在于, 所述建立 模块, 具体包括:
第三获取单元, 用于向所述远端 UE发送会话建立请求, 并根据所述远端 UE 返回的会话建立响应获取所述远端 UE上的媒体流信息;
第四获取单元, 用于将所述第三获取单元获取到的所述远端 UE上的媒体流 信息携带在会话建立请求中发送给所述被控 UE ,并根据所述被控 UE返回的会话 建立响应获取所述被控 UE上的媒体流信息;
第二发送单元, 用于将所述第四获取单元获取到的所述被控 UE上的媒体流 信息发送给所述远端 UE。
15、 一种建立联合会话的系统, 其特征在于, 所述系统包括: 控制用户设 备 UE和网络控制设备;
所述控制 UE为权利要求 8至权利要求 1 0任一权利要求所述的控制 UE; 所述网络控制设备为权利要求 11至权利要求 14任一权利要求所述的网络 控制设备。
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