WO2009046664A1 - Procédé et système de commande de flux multimédia en temps réel - Google Patents

Procédé et système de commande de flux multimédia en temps réel Download PDF

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Publication number
WO2009046664A1
WO2009046664A1 PCT/CN2008/072511 CN2008072511W WO2009046664A1 WO 2009046664 A1 WO2009046664 A1 WO 2009046664A1 CN 2008072511 W CN2008072511 W CN 2008072511W WO 2009046664 A1 WO2009046664 A1 WO 2009046664A1
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WO
WIPO (PCT)
Prior art keywords
real
media
media resource
control information
resource function
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PCT/CN2008/072511
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English (en)
French (fr)
Inventor
Yangbo Lin
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP08800984A priority Critical patent/EP2093962B1/en
Publication of WO2009046664A1 publication Critical patent/WO2009046664A1/zh

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Classifications

    • 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
    • H04L65/102—Gateways
    • H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • 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
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/613—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for the control of the source by the destination
    • 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
    • H04L65/80—Responding to QoS

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to a method and system for real-time control of a media stream.
  • the IP Multimedia Subsystem is a subsystem of the third generation mobile communication partner project that supports IP multimedia services.
  • IMS can provide a variety of media services, with separation of control functions and bearer capabilities, separation of calls and sessions, separation of applications and services, separation of services from networks, and convergence of mobile networks and Internet services.
  • the functional entity providing the media resource service in the IMS-based network architecture such as the media resource server
  • the media resource function control entity MRFC, Media Resource Function Control
  • MRFP Media Resource Function Processor
  • the MRFC at the service control layer is responsible for media deployment and/or control
  • the MRFP at the bearer transport layer is responsible for media processing and/or delivery.
  • IPT IP TV
  • a scheduling resource from the media resource server to process and transmit the corresponding media content, such as the creation of the media stream, Modify and delete (including media encoding, IP address, port, etc.), as well as combination, audit, monitoring, etc.
  • users may also need real-time interactive control of media content, such as controlling media playback, stop, pause, resume, fast forward , rewind, record, etc.
  • the MRFC can control the MRFP to implement resource scheduling for media transmission, including media stream creation, modification and deletion, combination, audit, monitoring, etc.
  • the MRFC cannot control the MRFP implementation to the media.
  • Interactive control of the transmission including controlling the playback, stop, pause, resume, fast forward, rewind, record, etc. of the media.
  • the inventor has found that at least the following problems exist in the prior art:
  • the user cannot be in a network architecture in which the service and the bearer are separated. Real-time control of media resources.
  • the technical problem to be solved by the embodiments of the present invention is to provide a method and system for real-time control of media streams, a media resource function control entity, and a media resource function processing entity, which can implement real-time real-time on media resources in a network architecture with separate services and bearers. control.
  • the embodiment of the present invention provides a method for real-time control of a media stream, including:
  • the media resource function control entity receives the media stream real-time control information sent from the user equipment; the media resource function control entity directly forwards and/or converts the media stream real-time control information to the media resource function processing entity;
  • the media resource function processing entity performs real-time control on the media stream according to the media stream real-time control information.
  • the embodiment of the invention further provides a system for real-time control of a media stream, comprising:
  • a media resource function control entity configured to receive real-time control information of the media stream sent from the user equipment, and directly forward and/or convert the media stream real-time control information to the media resource function processing entity;
  • the media resource function processing entity is configured to receive media stream real-time control information directly forwarded and/or converted by the media resource function control entity, and perform real-time control on the media stream according to the media stream real-time control information.
  • An embodiment of the present invention further provides a media resource function control entity, including:
  • a receiving unit configured to receive media stream real-time control information sent from the user equipment
  • a sending unit configured to send the media stream real-time control information received by the receiving unit to the media resource function processing entity.
  • An embodiment of the present invention further provides a media resource function control entity, including:
  • a receiving unit configured to receive media stream real-time control information sent from the user equipment, and a converting unit, configured to convert the media stream real-time control information received by the receiving unit into media resource control information;
  • a sending unit configured to send the media resource control information converted by the converting unit to the media resource function processing entity.
  • the embodiment of the invention further provides a media resource function processing entity, including:
  • the receiving unit is configured to receive media stream real-time control information sent by the media resource function control entity
  • the processing unit is configured to perform real-time control on the media stream according to the media stream real-time control information received by the receiving unit.
  • the method and system for media stream real-time control provided by the embodiment of the present invention, the media resource function control entity, and the media resource function processing entity, the media resource function control entity directly forwards and/or directly passes the media stream real-time control information sent by the user equipment. After being converted, the function is sent to the media resource function processing entity to control the media resource function processing entity to perform real-time control on the media stream, so that the user can implement real-time control of the media stream in the network architecture with separate services and bearers.
  • FIG. 1 is a signaling flowchart of a first embodiment of a method for real-time control of a media stream according to the present invention
  • FIG. 2 is a signaling flowchart of a second embodiment of a method for real-time control of a media stream according to the present invention
  • FIG. 3 is a structural diagram of an embodiment of a system for real-time control of media streams according to the present invention.
  • Embodiments of the present invention provide a method and system for real-time control of a media stream, a media resource function control entity, and a media resource function processing entity.
  • FIG. 1 is a flowchart of a first embodiment of a method for real-time control of media streams according to the present invention.
  • a real-time media control channel is established between the user equipment and the MRFC to transmit media stream real-time control information
  • a media resource control channel is established between the MRFC and the MRFP, and the MRFC sends the media resource control information to the MRFP through the media resource control channel.
  • the MRFP controls the media stream according to the control information, and the media resource control channel may use a "request-response" mechanism.
  • the specific processes for real-time control of media streams include:
  • Step 101 The user equipment sends media stream real-time control information to the MRFC through a real-time media control channel.
  • the real-time media control channel is established between the user equipment and the MRFC, and is configured to transmit real-time control information of the media stream sent by the user equipment to the MRFC.
  • the paths of the real-time media control channels may all be in the service control layer, all in the bearer transport layer, or a mixture of the two.
  • the real-time media control channel may use a real-time streaming protocol (RTSP, Real) Time Streaming Protocol, Session Initialization: SIP (Session Initiation Protocol) or SIP-encapsulated RTSP.
  • RTSP real-time streaming protocol
  • SIP Session Initiation Protocol
  • SIP-encapsulated RTSP SIP-encapsulated RTSP.
  • the media stream real-time control information may include resource scheduling information, such as creation, modification, deletion, combination, auditing, monitoring, and any combination of parameters of the media stream, and may also include interaction control related information, such as media stream playback. , Stop, Pause, Resume, Fast Forward, Rewind, Record, and any combination of their parameters.
  • Step 102 The MRFC converts the received media stream real-time control information into media resource control information.
  • the MRFC converts the received media stream real-time control information into the media resource control information, which specifically includes:
  • Step A The MRFC parses the received real-time control information of the media stream, and distinguishes the resource scheduling information and/or the interaction-related control information;
  • Step B The MRFC converts the resource scheduling information and/or the interoperation related control information into media resource control information.
  • Step 103 The MRFC sends the media resource control information to the media resource control channel.
  • the media resource control channel is established between the MRFC and the MRFP for transmitting media resource control information, and the "request-response" mechanism can be used.
  • the media resource control channel may use a gateway control protocol, such as H.248.
  • Step 104 The MRFP performs real-time control on the media stream according to the received media resource control information.
  • the MRFP performs resource scheduling on the media stream according to the differentiated resource scheduling information; and performs interactive operations on the media stream according to the differentiated interaction operation related control information.
  • the media resource control channel between the MRFC and the MRFP can transmit other media resource control information, such as the creation, modification, deletion, and combination of media streams related to the IP voice service, in addition to real-time control information of the media stream. Audit, monitoring, etc., are the same as the prior art and will not be further described here.
  • a media resource control channel is established between the MRFC and the MRFP to transmit media stream real-time control information and other media resource control information.
  • an interactive operation control channel may be established between the MRFC and the MRFP to transmit media stream real-time control information and other media resource control information.
  • the interworking control channel uses RTSP or H.248 encapsulated RTSP.
  • the MRFC forwards the received media stream real-time control information directly to the MRFP through the interworking control channel, and the MRFP controls the media stream in real time according to the received media stream real-time control information.
  • the interworking control channel can transmit other media resource control information in addition to the real-time control information of the media stream.
  • FIG. 2 it is a flowchart of a second embodiment of a method for real-time control of media streams according to the present invention.
  • a real-time media control channel is established between the user equipment and the MRFC to transmit media stream real-time control information
  • a media resource control channel and an interaction operation control channel are established between the MRFC and the MRFP, and the MRFC sends the resource through the media resource control channel.
  • the related control information is dispatched to the MRFP, and the interoperation related control information is sent to the MRFP through the interactive operation control channel.
  • the specific processes for real-time control of media resources include:
  • Step 201 The user equipment sends media stream real-time control information to the MRFC through a real-time media control channel.
  • the real-time media control channel is established between the user equipment and the MRFC, and is configured to transmit a media stream real-time control request sent by the user equipment to the MRFC.
  • the paths of the real-time media control channels may all be in the service control layer, all in the bearer transport layer, or a mixture of the two.
  • the real-time media control channel may use RTSP, SIP, and SIP-encapsulated RTSP.
  • the media stream real-time control information may include resource scheduling information, such as creation, modification, deletion, combination, auditing, monitoring, and any combination of parameters of the media stream, and may also include interaction control related information, such as media stream playback. , Stop, Pause, Resume, Fast Forward, Rewind, Record, and any combination of their parameters.
  • Step 202 The MRFC parses the received media stream real-time control information, distinguishes the resource scheduling related control information and/or the interaction operation related control information, and converts the resource scheduling related control information into the media resource control information;
  • Step 203 The MRFC sends the media resource control information converted by the resource scheduling related control information in the real-time control information of the media stream to the MRFP through the media resource control channel, and the interaction operation related control information in the real-time control information of the media stream is controlled.
  • the media resource control channel is established between the MRFC and the MRFP, and is used for transmitting media resource control information obtained by converting resource scheduling related control information in real-time control information of the media stream, and may adopt a "request-response" mechanism.
  • the media resource control channel may use a gateway control protocol, such as H.248.
  • the interworking control channel is established between the MRFC and the MRFP, and is used for transmitting inter-operation related control information in the media stream real-time control information, and the "request-response" mechanism can be used.
  • the interworking control channel uses RTSP or RT.
  • Step 204 The MRFP performs real-time control on the media stream according to the received media stream real-time control information.
  • the media resource control channel between the MRFC and the MRFP can transmit other media resource control information, such as the creation, modification, deletion, and combination of media streams related to the IP voice service, in addition to real-time control information of the media stream. Audit, monitoring, etc., are the same as the prior art and will not be further described here.
  • the media stream real-time control information and other media resource control information are transmitted through the cooperation of the established dual channel (including the media resource control channel and the interoperation control channel).
  • the MRFC and the MRFP can also transmit media stream real-time control information and other media resource control information independently of each other through the established dual channel (including the media resource control channel and the interoperation control channel).
  • the interworking control channel uses RTSP or H.248 encapsulated RTSP, and the media resource control channel uses a gateway control protocol, such as H.248.
  • the MRFC forwards the received media stream real-time control information to the MRFP through the interworking control channel, and the MRFP performs real-time control on the media stream according to the received media stream real-time control information; the MRFC passes the received other media resource control information.
  • the media resource control channel is sent to the MRFP, and the MRFP controls the media stream according to the received media resource control information.
  • FIG. 3 is a structural diagram of an embodiment of a system for real-time control of media streams according to the present invention.
  • the system for real-time control of the media stream includes a media resource function control entity 31 and a media resource function processing Body 32.
  • the media resource function control entity 31 is configured to receive media stream real-time control information sent from the user equipment, and directly forward and/or convert the media stream real-time control information to the media resource function processing entity;
  • the media resource function processing entity 32 is configured to receive media stream real-time control information directly forwarded and/or converted by the media resource function control entity, and perform real-time control on the media stream according to the media stream real-time control information .
  • the media resource function control entity 31 includes a receiving unit 311, a parsing unit 312, a converting unit 313, an encapsulating unit 314, and a transmitting unit 315.
  • the receiving unit 311 is configured to receive media stream real-time control information sent from the user equipment, where the parsing unit 312 is configured to parse the media stream real-time control information received by the receiving unit 311, and distinguish the resource scheduling related control. Information and/or interoperation-related control information; the converting unit 313, configured to convert the resource scheduling related control information parsed by the parsing unit 312 into media resource control information; the encapsulating unit 314, configured to: The media resource control information obtained by the conversion unit 313 converting the resource scheduling related control information and/or the interworking related control information parsed by the parsing unit 312 is encapsulated by a gateway control protocol (for example, H.248) or a real-time streaming protocol; The sending unit 315 is configured to send the resource scheduling control information and/or the interoperation related control information encapsulated by the encapsulating unit to the media resource function processing entity 32.
  • a gateway control protocol for example, H.248
  • the sending unit 315 is configured to send the resource scheduling control information and/
  • the media resource function control entity 31 may send the resource scheduling control information and/or the interaction operation related control information to the media resource function processing entity 32 through the media resource control channel, where the media resource control channel uses the media gateway control protocol. ;
  • the media resource function control entity 31 may also send the resource scheduling control information and/or the interaction operation related control information to the media resource function processing entity 32 through an interaction operation control channel, where the interaction operation control channel uses a real-time streaming protocol. Or a real-time streaming protocol encapsulated by the media gateway control protocol;
  • the media resource function control entity 31 may also send the resource scheduling control information to the media resource function processing entity 32 through the media resource control channel, and send the interaction operation related control information to the media resource function processing entity 32 through the interaction operation control channel.
  • the media resource control channel uses a media gateway control protocol
  • the interaction control channel uses a real-time streaming protocol encapsulated by a real-time streaming protocol or a media gateway control protocol.
  • the media resource function processing entity 32 includes a receiving unit 321 and a processing unit 322.
  • the receiving unit 321 is configured to receive media stream real-time control information sent by the media resource function control entity 31.
  • the processing unit 322 is configured to perform media stream control according to the media stream real-time control information received by the receiving unit 321 Real-time control.
  • the media resource function control entity may further include only a receiving unit and a sending unit.
  • the receiving unit is configured to receive media stream real-time control information sent from the user equipment
  • the sending unit is configured to forward the media stream real-time control information received by the receiving unit to the media resource function processing entity.
  • the encapsulating unit can also be used to encapsulate the control information to be sent by the sending unit before using the gateway control protocol (for example, H.248) or the real-time streaming protocol.
  • the media resource function control entity may further include only a receiving unit, a converting unit, and a transmitting unit.
  • the receiving unit is configured to receive media stream real-time control information sent from the user equipment, where the converting unit is configured to convert the media stream real-time control information received by the receiving unit into media resource control information, and send the unit by using a sending unit.
  • the encapsulating unit can also be used to encapsulate the control information to be sent by the sending unit before using the gateway control protocol (for example, H.248) or the real-time streaming protocol.
  • the method and system for media stream real-time control provided by the embodiment of the present invention, the media resource function control entity, and the media resource function processing entity, the media resource function control entity directly forwards and/or directly passes the media stream real-time control information sent by the user equipment. After being converted, the function is sent to the media resource function processing entity to control the media resource function processing entity to perform real-time control on the media stream, so that real-time control of the media stream can be realized in a network architecture in which the service and the bearer are separated.
  • the media resource function control entity receives the media stream real-time control information from the user equipment and performs unified control on the media resource function processing entity, and the media resource function control entity belongs to the service layer, real-time control of the media stream is based on The business layer is carried out, thus facilitating the simplification of the function implementation of the MRFC and the MRFP.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Television Signal Processing For Recording (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Description

媒体流实时控制的方法及系统
本申请要求于 2007 年 9 月 30 日提交中国专利局、 申请号为 200710151385.1、 发明名称为"媒体流实时控制的方法及系统，，的中国专利申请 的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及网络通信技术领域，特别涉及一种媒体流实时控制的方法及系 统。
背景技术
IP多媒体子系统 (IMS, IP Multimedia Subsystem)是第三代移动通信合作伙 伴项目提出的支持 IP多媒体业务的子系统。 IMS可以提供多种媒体业务， 且 具有控制功能与承载能力分离、 呼叫与会话分离、 应用与服务分离、 业务与网 络分离、移动网与互联网业务融合等特点。按照业务与承载分离的网络演进思 想， 基于 IMS的网络架构中的提供媒体资源服务的功能实体， 例如媒体资源 服务器， 可以分解为控制和处理两个功能实体关键构件， 分别为媒体资源功能 控制实体 (MRFC, Media Resource Function Control)和媒体资源功能处理实体 (MRFP, Media Resource Function Processor)。 其中， 处于业务控制层的 MRFC 负责媒体的部署和 /或控制， 处于承载传送层的 MRFP负责媒体的处理和 /或交 付。
在实时媒体业务 , 例如 IP电视 (IPT V, IP Television)中， 当用户希望欣赏某 个节目时，用户需要向媒体资源服务器请求调度资源以处理和传送相应的媒体 内容， 例如媒体流的创建、 修改和删除（包括媒体编码、 IP地址、 端口等）， 以及组合、审计、监测等， 同时用户还可能需要对媒体内容进行实时交互控制， 例如控制媒体的播放、 停止、 暂停、 恢复、 快进、 快退、 录制等。 在现有的基 于 IMS的网络架构中， 虽然 MRFC能够控制 MRFP实现对媒体传送的资源调 度， 包括媒体流的创建、 修改和删除、 组合、 审计、 监测等， 但是 MRFC不 能够控制 MRFP 实现对媒体传送的交互控制， 包括控制媒体的播放、 停止、 暂停、 恢复、 快进、 快退、 录制等。
因此，在进行本发明创造过程中，发明人发现现有技术中至少存在如下问 题： 现有技术提供的技术方案中， 用户不能够在业务与承载分离的网络架构中 实现对媒体资源的实时控制。
发明内容
本发明实施例要解决的技术问题是提供一种媒体流实时控制的方法及系 统、媒体资源功能控制实体、 媒体资源功能处理实体， 能够在业务与承载分离 的网络架构中实现对媒体资源的实时控制。
为解决上述技术问题， 本发明实施例的目的是通过以下技术方案实现的： 本发明实施例提供一种媒体流实时控制的方法， 包括：
媒体资源功能控制实体接收从用户设备发送过来的媒体流实时控制信息； 媒体资源功能控制实体将所述媒体流实时控制信息直接转发和 /或经转换 后发送给媒体资源功能处理实体；
媒体资源功能处理实体根据所述媒体流实时控制信息，对媒体流进行实时 控制。
本发明实施例还提供一种媒体流实时控制的系统， 包括：
媒体资源功能控制实体，用于接收从用户设备发送过来的媒体流实时控制 信息 , 并将所述媒体流实时控制信息直接转发和 /或经转换后发送给媒体资源 功能处理实体；
媒体资源功能处理实体，用于接收所述媒体资源功能控制实体直接转发和 /或经转换后发送的媒体流实时控制信息， 并根据所述媒体流实时控制信息， 对媒体流进行实时控制。
本发明实施例还提供一种媒体资源功能控制实体， 包括：
接收单元， 用于接收从用户设备发送过来的媒体流实时控制信息； 发送单元，用于将所述接收单元接收的媒体流实时控制信息发送给媒体资 源功能处理实体。
本发明实施例还提供一种媒体资源功能控制实体， 包括：
接收单元， 用于接收从用户设备发送过来的媒体流实时控制信息； 转换单元，用于将所述接收单元接收的所述媒体流实时控制信息转换为媒 体资源控制信息；
发送单元，用于将所述转换单元转换后的媒体资源控制信息发送给媒体资 源功能处理实体。 本发明实施例还提供一种媒体资源功能处理实体， 包括：
接收单元， 用于接收媒体资源功能控制实体发送的媒体流实时控制信息； 处理单元， 用于根据所述接收单元所接收的媒体流实时控制信息，对媒体 流进行实时控制。
通过本发明实施例提供的媒体流实时控制的方法及系统、媒体资源功能控 制实体、媒体资源功能处理实体，媒体资源功能控制实体通过将用户设备发送 的媒体流实时控制信息直接转发和 /或经转换后发送给媒体资源功能处理实 体， 来控制媒体资源功能处理实体对媒体流进行实时控制， 因此用户能够在业 务与承载分离的网络架构中实现对媒体流的实时控制。
附图说明
图 1为本发明媒体流实时控制的方法第一实施例的信令流程图；
图 2为本发明媒体流实时控制的方法第二实施例的信令流程图；
图 3为本发明媒体流实时控制的系统一个实施例的结构图。
具体实施方式
本发明实施例提供一种媒体流实时控制的方法及系统、媒体资源功能控制 实体、媒体资源功能处理实体。 为使本发明的技术方案更加清楚明白， 以下参 照附图并列举实施例， 对本发明进一步详细说明。
请参照图 1 , 为本发明媒体流实时控制的方法的第一实施例的流程图。 本 实施例中， 用户设备与 MRFC之间建立实时媒体控制通道来传送媒体流实时 控制信息， MRFC与 MRFP之间建立媒体资源控制通道， MRFC通过所述媒 体资源控制通道发送媒体资源控制信息给 MRFP, MRFP根据所述控制信息对 媒体流进行控制， 所述媒体资源控制通道可以釆用 "请求一响应"机制。
对媒体流进行实时控制的具体过程包括：
步骤 101 :用户设备通过实时媒体控制通道向 MRFC发送媒体流实时控制 信息；
所述实时媒体控制通道建立在用户设备与 MRFC之间， 用于将用户设备 发送的媒体流实时控制信息传送给 MRFC。所述实时媒体控制通道的路径可以 全部处于业务控制层、全部处于承载传送层或者二者混合。 为了传输所述媒体 流实时控制信息， 所述实时媒体控制通道可以釆用实时流协议 (RTSP, Real Time Streaming Protocol)、会话初: ½协议( SIP, Session Initiation Protocol)或者 SIP 封装的 RTSP。
所述媒体流实时控制信息中可以包括资源调度信息， 例如媒体流的创建、 修改、 删除、 组合、 审计、 监测及其参数的任意组合， 还可以包括交互操作相 关控制信息， 例如媒体流的播放、 停止、 暂停、 恢复、 快进、 快退、 录制及其 参数的任意组合。
步骤 102: MRFC将所接收的媒体流实时控制信息转换为媒体资源控制信 息；
MRFC 将所接收的媒体流实时控制信息转换为媒体资源控制信息具体包 括：
步骤 A: MRFC对所接收的媒体流实时控制信息进行解析， 区分资源调度 信息和 /或交互操作相关控制信息；
步骤 B: MRFC将所述资源调度信息和 /或交互操作相关控制信息转换为 媒体资源控制信息。
步骤 103 : MRFC 通过媒体资源控制通道将媒体资源控制信息发送给
MRFP;
所述媒体资源控制通道建立在 MRFC与 MRFP之间， 用于传送媒体资源 控制信息， 可以釆用"请求一响应"机制。 所述媒体资源控制通道可以釆用网关 控制协议， 例如 H.248。
步骤 104: MRFP根据所接收的媒体资源控制信息， 对媒体流进行实时控 制。
MRFP根据区分后的资源调度信息， 对媒体流进行资源调度； 根据区分后 的交互操作相关控制信息对媒体流进行交互操作。
本实施例中， MRFC与 MRFP之间的媒体资源控制通道除了能够传输媒 体流实时控制信息， 还可以传输其他媒体资源控制信息， 例如 IP语音业务相 关的媒体流的创建、 修改、 删除、 组合、 审计、 监测等， 与现有技术相同， 这 里不做进一步描述。
本实施例中， MRFC与 MRFP之间建立媒体资源控制通道， 来传输媒体 流实时控制信息和其他媒体资源控制信息。 另夕卜， MRFC与 MRFP之间还可以建立交互操作控制通道来传输媒体流 实时控制信息和其他媒体资源控制信息。所述交互操作控制通道釆用 RTSP或 者 H.248封装的 RTSP。 MRFC将所接收的媒体流实时控制信息通过所述交互 操作控制通道直接转发给 MRFP, MRFP再根据接收的媒体流实时控制信息， 对媒体流进行实时控制。所述交互操作控制通道除了能够传输媒体流实时控制 信息， 还可以传输其他媒体资源控制信息。
请参照图 2, 为本发明媒体流实时控制的方法的第二实施例的流程图。 本 实施例中， 用户设备与 MRFC之间建立实时媒体控制通道来传送媒体流实时 控制信息， MRFC与 MRFP之间建立媒体资源控制通道和交互操作控制通道， MRFC通过所述媒体资源控制通道发送资源调度相关控制信息给 MRFP,通过 所述交互操作控制通道发送交互操作相关控制信息给 MRFP。
对媒体资源进行实时控制的具体过程包括：
步骤 201 :用户设备通过实时媒体控制通道向 MRFC发送媒体流实时控制 信息；
所述实时媒体控制通道建立在用户设备与 MRFC之间， 用于将用户设备 发送的媒体流实时控制请求传送给 MRFC。所述实时媒体控制通道的路径可以 全部处于业务控制层、全部处于承载传送层或者二者混合。 为了传输媒体流实 时控制信息， 所述实时媒体控制通道可以釆用 RTSP、 SIP、 SIP封装的 RTSP。
所述媒体流实时控制信息中可以包括资源调度信息， 例如媒体流的创建、 修改、 删除、 组合、 审计、 监测及其参数的任意组合， 还可以包括交互操作相 关控制信息， 例如媒体流的播放、 停止、 暂停、 恢复、 快进、 快退、 录制及其 参数的任意组合。
步骤 202: MRFC解析所接收的媒体流实时控制信息， 区分出资源调度相 关控制信息和 /或交互操作相关控制信息， 并将资源调度相关控制信息转换为 媒体资源控制信息；
步骤 203: MRFC将所述媒体流实时控制信息中的资源调度相关控制信息 转换后的媒体资源控制信息通过媒体资源控制通道发送给 MRFP,将所述媒体 流实时控制信息中的交互操作相关控制信息通过交互操作控制通道直接转发 给 MRFP; 所述媒体资源控制通道建立在 MRFC与 MRFP之间， 用于传送媒体流实 时控制信息中的资源调度相关控制信息转换得到的媒体资源控制信息，可以釆 用"请求一响应"机制。 所述媒体资源控制通道可以釆用网关控制协议， 例如 H.248。
所述交互操作控制通道建立在 MRFC与 MRFP之间， 用于传送媒体流实 时控制信息中的交互操作相关控制信息， 可以釆用"请求一响应"机制。 所述交 互操作控制通道釆用 RTSP或者 H.248封装的 RTSP。
步骤 204: MRFP根据所接收的媒体流实时控制信息， 对媒体流进行实时 控制。
本实施例中， MRFC与 MRFP之间的媒体资源控制通道除了能够传输媒 体流实时控制信息， 还可以传输其他媒体资源控制信息， 例如 IP语音业务相 关的媒体流的创建、 修改、 删除、 组合、 审计、 监测等， 与现有技术相同， 这 里不做进一步描述。
本实施例中 , MRFC与 MRFP之间 , 通过建立的双通道（包括媒体资源控 制通道和交互操作控制通道)互相配合来传输媒体流实时控制信息和其他媒体 资源控制信息。
另夕卜， MRFC与 MRFP之间还可以通过建立的双通道（包括媒体资源控制 通道和交互操作控制通道)互相独立来传输媒体流实时控制信息和其他媒体资 源控制信息。 所述交互操作控制通道釆用 RTSP或者 H.248封装的 RTSP, 所 述媒体资源控制通道釆用网关控制协议， 例如 H.248。 MRFC将所接收的媒体 流实时控制信息通过所述交互操作控制通道转发给 MRFP, MRFP再根据接收 的媒体流实时控制信息，对媒体流进行实时控制； MRFC将所接收的其他媒体 资源控制信息通过所述媒体资源控制通道发送给 MRFP, MRFP再根据接收的 媒体资源控制信息， 对媒体流进行控制。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤 是可以通过程序来指令相关的硬件来完成，所述的程序可以存储于一计算机可 读取存储介质中， 所述的存储介质， 如： ROM/RAM、 磁碟、 光盘等。
请参照图 3 , 为本发明媒体流实时控制的系统一个实施例的结构图。 所述 媒体流实时控制的系统包括媒体资源功能控制实体 31和媒体资源功能处理实 体 32。
所述媒体资源功能控制实体 31 , 用于接收从用户设备发送过来的媒体流 实时控制信息 , 并将所述媒体流实时控制信息直接转发和 /或经转换后发送给 媒体资源功能处理实体； 所述媒体资源功能处理实体 32, 用于接收所述媒体 资源功能控制实体直接转发和 /或经转换后发送的媒体流实时控制信息， 并根 据所述媒体流实时控制信息， 对媒体流进行实时控制。
所述媒体资源功能控制实体 31包括接收单元 311、解析单元 312、转换单 元 313、 封装单元 314以及发送单元 315。
所述接收单元 311 ,用于接收从用户设备发送过来的媒体流实时控制信息； 所述解析单元 312 , 用于将所述接收单元 311接收的媒体流实时控制信息进行 解析， 区分资源调度相关控制信息和 /或交互操作相关控制信息； 所述转换单 元 313 , 用于将所述解析单元 312解析所得的资源调度相关控制信息转换为媒 体资源控制信息； 所述封装单元 314, 用于将所述转换单元 313转换资源调度 相关控制信息所得的媒体资源控制信息和 /或所述解析单元 312解析所得的交 互操作相关控制信息釆用网关控制协议 (例如 H.248)或者实时流协议进行封 装； 所述发送单元 315 , 用于将所述封装单元封装后的资源调度控制信息和 / 或交互操作相关控制信息发送给媒体资源功能处理实体 32。
所述媒体资源功能控制实体 31可以通过媒体资源控制通道将所述资源调 度控制信息和 /或交互操作相关控制信息发送给媒体资源功能处理实体 32, 所 述媒体资源控制通道釆用媒体网关控制协议；
所述媒体资源功能控制实体 31也可以通过交互操作控制通道将所述资源 调度控制信息和 /或交互操作相关控制信息发送给媒体资源功能处理实体 32 , 所述交互操作控制通道釆用实时流协议或者媒体网关控制协议封装的实时流 协议；
所述媒体资源功能控制实体 31还可以通过媒体资源控制通道将资源调度 控制信息发送给媒体资源功能处理实体 32 , 通过交互操作控制通道将交互操 作相关控制信息发送给媒体资源功能处理实体 32 , 所述媒体资源控制通道釆 用媒体网关控制协议，所述交互操作控制通道釆用实时流协议或者媒体网关控 制协议封装的实时流协议。 所述媒体资源功能处理实体 32包括接收单元 321、处理单元 322。 所述接 收单元 321 , 用于接收媒体资源功能控制实体 31发送的媒体流实时控制信息； 所述处理单元 322 ,用于根据所述接收单元 321所接收的媒体流实时控制信息， 对媒体流进行实时控制。
所述媒体资源功能控制实体还可以仅包括接收单元和发送单元。所述接收 单元用于接收从用户设备发送过来的媒体流实时控制信息；所述发送单元用于 将所述接收单元接收的媒体流实时控制信息直接转发给媒体资源功能处理实 体。在此基础上还可以增加封装单元用于对发送单元待发送的控制信息在发送 前釆用网关控制协议 (例如 H.248)或者实时流协议进行封装。
所述媒体资源功能控制实体还可以仅包括接收单元、 转换单元和发送单 元。 所述接收单元用于接收从用户设备发送过来的媒体流实时控制信息； 所述 转换单元用于将所述接收单元接收的所述媒体流实时控制信息转换为媒体资 源控制信息， 并通过发送单元发送给媒体资源功能处理实体。在此基础上还可 以增加封装单元用于对发送单元待发送的控制信息在发送前釆用网关控制协 议 (例如 H.248)或者实时流协议进行封装。
通过本发明实施例提供的媒体流实时控制的方法及系统、媒体资源功能控 制实体、媒体资源功能处理实体，媒体资源功能控制实体通过将用户设备发送 的媒体流实时控制信息直接转发和 /或经转换后发送给媒体资源功能处理实 体， 来控制媒体资源功能处理实体对媒体流进行实时控制， 因此能够在业务与 承载分离的网络架构中实现对媒体流的实时控制。
进一步的，由于媒体资源功能控制实体从用户设备接收媒体流实时控制信 息并对媒体资源功能处理实体进行统一控制，而所述媒体资源功能控制实体属 于业务层， 因此对媒体流的实时控制是基于业务层进行的，故而有利于 MRFC 和 MRFP在功能实现上的简化。
以上对本发明所提供的一种媒体流实时控制的方法及系统进行了详细介 例的说明只是用于帮助理解本发明所揭示的技术方案； 同时，对于本领域的一 般技术人员，依据本发明的思想， 在具体实施方式及应用范围上均会有改变之 处， 综上所述， 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1.一种媒体流实时控制的方法， 其特征在于， 包括：
媒体资源功能控制实体接收从用户设备发送过来的媒体流实时控制信息； 媒体资源功能控制实体将所述媒体流实时控制信息直接转发和 /或经转换 后发送给媒体资源功能处理实体；
媒体资源功能处理实体根据所述媒体流实时控制信息，对媒体流进行实时 控制。
2. 根据权利要求 1 所述的媒体流实时控制的方法， 其特征在于， 所述媒 体资源功能控制实体通过实时媒体控制通道接收从所述用户设备发送过来的 所述媒体流实时控制信息。
3. 根据权利要求 2所述的媒体流实时控制的方法， 其特征在于， 所述实 时媒体控制通道釆用实时流协议、会话初始协议或者会话初始协议封装的实时 流协议。
4. 根据权利要求 1 所述的媒体流实时控制的方法， 其特征在于， 所述媒 体资源功能控制实体将所述媒体流实时控制信息经转换后发送给媒体资源功 能处理实体包括：
所述媒体资源功能控制实体对所述媒体流实时控制信息进行解析，区分资 源调度信息和 /或交互操作相关控制信息；
所述媒体资源功能控制实体将所述资源调度信息转换为媒体资源控制信 息， 发送给所述媒体资源功能处理实体；
所述媒体资源功能控制实体将所述交互操作相关控制信息转发给所述媒 体资源功能处理实体。
5. 根据权利要求 4所述的媒体流实时控制的方法， 其特征在于， 所述媒 体资源功能控制实体通过媒体资源控制通道将媒体资源控制信息发送给所述 媒体资源功能处理实体。
6. 根据权利要求 4所述的媒体流实时控制的方法， 其特征在于， 所述媒体资源功能控制实体通过交互操作控制通道将所述交互操作相关 控制信息转发给所述媒体资源功能处理实体。
7. 根据权利要求 4所述的媒体流实时控制的方法， 其特征在于， 所述资 源调度信息包括媒体流的创建、 修改、 删除、 组合、 审计、 监测及其参数的任 意组合， 所述交互操作相关控制信息包括媒体流的播放、 停止、 暂停、 恢复、 快进、 快退、 录制及其参数的任意组合。
8. 根据权利要求 1 所述的媒体流实时控制的方法， 其特征在于， 所述媒 体资源功能控制实体将所述媒体流实时控制信息经转换后发送给媒体资源功 能处理实体包括：
所述媒体资源功能控制实体将所述媒体流实时控制信息转换为媒体资源 控制信息， 并发送给所述媒体资源功能处理实体。
9. 根据权利要求 8所述的媒体流实时控制的方法， 其特征在于， 所述媒体资源功能控制实体通过媒体资源控制通道将所述媒体流实时控 制信息发送给所述媒体资源功能处理实体。
10. 根据权利要求 5或 9所述的媒体流实时控制的方法， 其特征在于， 所 述媒体资源控制通道釆用网关控制协议。
11. 根据权利要求 1所述的媒体流实时控制的方法， 其特征在于， 所述媒 体资源功能控制实体将所述媒体流实时控制信息直接转发给媒体资源功能处 理实体包括：
所述媒体资源功能控制实体通过交互操作控制通道将所述媒体流实时控 制信息直接转发给所述媒体资源功能处理实体。
12. 根据权利要求 6或 11所述的媒体流实时控制的方法， 其特征在于， 所述交互操作控制通道釆用实时流协议或者网关控制协议封装的实时流协议。
13. 一种媒体流实时控制的系统， 其特征在于， 包括：
媒体资源功能控制实体，用于接收从用户设备发送过来的媒体流实时控制 信息 , 并将所述媒体流实时控制信息直接转发和 /或经转换后发送给媒体资源 功能处理实体；
媒体资源功能处理实体，用于接收所述媒体资源功能控制实体直接转发和
/或经转换后发送的媒体流实时控制信息， 并根据所述媒体流实时控制信息， 对媒体流进行实时控制。
14. 一种媒体资源功能控制实体， 其特征在于， 包括：
接收单元， 用于接收从用户设备发送过来的媒体流实时控制信息； 发送单元，用于将所述接收单元接收的媒体流实时控制信息发送给媒体资 源功能处理实体。
15. 根据权利要求 14所述的媒体资源功能控制实体， 其特征在于， 所述 媒体资源功能控制实体还包括：
解析单元， 用于对所述接收单元接收的媒体流实时控制信息进行解析， 区 分资源调度信息和 /或交互操作相关控制信息；
所述发送单元将所述交互操作相关控制信息发送给媒体资源功能处理实 体。
16. 根据权利要求 14或 15所述的媒体资源功能控制实体， 其特征在于， 所述媒体资源功能控制实体还包括：
封装单元，用于对所述发送单元发送的媒体流实时控制信息釆用网关控制 协议或者实时流协议进行封装。
17. 一种媒体资源功能控制实体， 其特征在于， 包括：
接收单元， 用于接收从用户设备发送过来的媒体流实时控制信息； 转换单元，用于将所述接收单元接收的所述媒体流实时控制信息转换为媒 体资源控制信息；
发送单元，用于将所述转换单元转换后的媒体资源控制信息发送给媒体资 源功能处理实体。
18. 根据权利要求 17所述的媒体资源功能控制实体， 其特征在于， 所述 媒体资源功能控制实体还包括：
解析单元， 用于对所述接收单元接收的媒体流实时控制信息进行解析， 区 分资源调度信息和 /或交互操作相关控制信息；
所述转换单元将所述解析单元解析所得的资源调度信息转换为媒体资源 控制信息；
所述发送单元将所述解析单元得到的交互操作相关控制信息及所述转换 单元转换后的媒体资源控制信息发送给媒体资源功能处理实体。
19. 根据权利要求 17或者 18所述的媒体资源功能控制实体，其特征在于， 所述媒体资源功能控制实体还包括：
封装单元，用于对所述发送单元发送的媒体流实时控制信息釆用网关控制 协议或者实时流协议进行封装。
20. 一种媒体资源功能处理实体， 其特征在于， 包括：
接收单元， 用于接收媒体资源功能控制实体发送的媒体流实时控制信息； 处理单元， 用于根据所述接收单元所接收的媒体流实时控制信息，对媒体 流进行实时控制。
PCT/CN2008/072511 2007-09-30 2008-09-25 Procédé et système de commande de flux multimédia en temps réel WO2009046664A1 (fr)

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EP2093962A1 (en) 2009-08-26

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