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Method and system implementing time shifted TV business based on NGN network, system and media resource apparatus thereof

A technology for media resources and network implementation, which is applied to devices, televisions, and transmission systems that provide special services in branch offices. It can solve problems such as inapplicability and underutilization of SIP potential capabilities, and achieve the effect of enriching IMS services.

Inactive Publication Date: 2010-01-06
北京维本知识产权管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In other words, NGN supports the use of SIP communication, but in the prior art, service requests and control signaling are implemented through HTTP / RTSP, which does not make full use of the potential capabilities of SIP, so when implementing the prior art The method of shifting TV is not suitable for NGN

Method used

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  • Method and system implementing time shifted TV business based on NGN network, system and media resource apparatus thereof
  • Method and system implementing time shifted TV business based on NGN network, system and media resource apparatus thereof
  • Method and system implementing time shifted TV business based on NGN network, system and media resource apparatus thereof

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Embodiment 1

[0076] Use SIP for RTSP negotiation to establish a multicast service flow, and use RTSP for subsequent service control and service flow switching mechanisms;

[0077] The process of establishing the initial multicast service flow can use SIP for business negotiation. During the SIP negotiation process, only RTSP channel information is negotiated, including at least RTSP address and port information. After negotiating RTSP address and port number information, the user terminal uses the negotiated RTSP The channel adopts RTSP standard process to negotiate transmission parameters (RTP, RTCP, codec format, etc.) The server sends it to the user.

[0078] The specific process is as follows: the terminal sends a service request to the AS, and the request carries the terminal's RTSP address and port information. After the request is routed, it reaches the media control function entity (MRFC). The media control function entity controls the media bearer function entity MRFP, and intera...

Embodiment 2

[0101] The process of establishing the initial multicast service flow uses SIP for service negotiation. In the SIP negotiation, RTSP channel information and media transmission parameters are negotiated, including at least RTSP address and port, service multicast address and port, etc.

[0102] The specific process is as follows: the user terminal sends a SIP request to the AS, and the request simultaneously carries the RTSP address and port information of the terminal as well as the RTP address and port information used to transmit the media stream. After the request is routed, it reaches the MRFC, and the MRFC controls the MRFP to interactively obtain the port information allocated by the MRFP for the RTSP connection and the RTP connection. Therefore, in the service request response returned by the MRFC, the address and port information of the RTSP connection of the MRFP and the address and port information of the RTP connection are carried at the same time. In this way, afte...

Embodiment 3

[0144] Embodiment 3: The process of establishing the initial multicast service flow adopts SIP for service negotiation. In the initial SIP negotiation, only media transmission parameters are negotiated, including at least the service multicast address and port. After the above initial negotiation is completed, the service flow is sent in multicast mode.

[0145] The specific instructions are as follows: the terminal initiates a SIP service request to the AS, and negotiates the media transmission parameters in the SDP; the AS initiates a resource request to the MRFC according to the request, and the request requires the MRFC to determine the media transmission parameters; the MRFC and the MRFP interact to determine the media transmission parameters. Transmission parameter, which is allocated by MRFP and terminated on MRFP; MRFC returns the result to AS after obtaining the media transmission parameter, which carries the negotiation result; AS routes the above-mentioned negotiatio...

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Abstract

A method, a system and a media resource device for achieving the time shift TV service based on the NGN network are provided. In the present invention, the service request, which is initiated by a user end, is routed to a application service through a call session control function entity; a resource request is initiated to a media resource function controller entity by the application services; the service request response is returned to application server by the media resource function controller entity after the interaction between the media resource function controller entity and the media resource function process entity; the description service request response is routed to the user end through the call session control function entity by the description application server; a multicast service stream is built by the user end and the media resource function process entity; ; when the service stream control is requested by the user end, a unicast negotiation is processed by the media resource function and the user end, the unicast service stream is transmitted to the user end according to the result of the unicast negotiation. The present invention implements the switch-controlling from multicast service stream to unicast service stream by using the intrinsic function entity MRF of the NGN and provides an unicast service stream, provides a time-shifting TV service in the NGN network,and enriches the IMS service.

Description

[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on March 2, 2006, the application number is 200610034107.3, and the title of the invention is "A method and system for realizing time-shifted TV service based on NGN network". The entire contents are incorporated by reference in this application. technical field [0002] The invention relates to a technology for realizing time-shifted TV in an NGN network, in particular to a method, a system and a media resource device for realizing a time-shifted TV service based on an NGN network. Background technique [0003] Time-shifted TV (shift TV) is a video service that emerged with the maturity of broadband networks. It is one of the service forms that Internet Protocol Television (IPTV) can provide. The service allows users to perform operations such as pausing and rewinding the program while watching a live TV program, and can fast forward to the moment when the live...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/173H04L12/18H04N7/24
CPCH04L12/18H04N7/17336H04N21/6377H04N21/6587H04N21/2387H04L65/608H04L29/06517H04N21/658H04L29/06027H04L65/65
Inventor 严军吴向阳李金成
Owner 北京维本知识产权管理有限公司