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Method for streaming media distribution in virtual special multicasting service, device and system thereof

A multicast service and streaming media technology, applied in the field of communication, can solve problems such as mosaic, heavy load network pressure, and high overhead, and achieve the effect of shortening time and reducing impact

Active Publication Date: 2012-11-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The overhead is high. Under the same VPMS instance, different sources send synchronously. In the bearer network, two copies of the same content are transmitted to the same set of receivers. This puts a lot of pressure on the bearer network and cannot be implemented according to network deployment or region. To achieve load balancing;
[0007] (2) The effect is poor. With such a large overhead, only 50ms of protection switching can be guaranteed, and the continuous packet loss of 50ms will cause serious quality degradation phenomena such as screen stagnation, mosaic, and blurred screen on the terminal, which will affect the terminal user experience;
[0008] (3) The configuration is complex. Similar to the traditional transmission network, the PE device needs to manually configure the policy of multiple transmission and selective reception. Once the policy changes, it is necessary to reconfigure the policies on all PE (Provide Edge, service provider edge) devices

Method used

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  • Method for streaming media distribution in virtual special multicasting service, device and system thereof
  • Method for streaming media distribution in virtual special multicasting service, device and system thereof
  • Method for streaming media distribution in virtual special multicasting service, device and system thereof

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Embodiment 1

[0035] see figure 1 , the embodiment of the present invention provides a method for streaming media distribution in a virtual private multicast service, such as IPTV

[0036] A method of BTV's business, the method comprising:

[0037] 101: Receive the VPMS information flooded or released by the PE device in the network;

[0038] Among them, see figure 2 As shown, the VPMS information includes:

[0039] VPMS ID: used to identify a VPMS instance;

[0040] PE identification: used to identify the PE equipment participating in the construction of the above-mentioned specified VPMS instance;

[0041] Information about the autonomous domain to which the PE device belongs:

[0042] Associated AC ID: the connection ID between PE and CE, which can usually be a vlan ID; figure 2 The ACIDs with sequence numbers from 1 to N are shown in , that is, AC-1ID to AC-n ID.

[0043] Association AC direction: when the direction is downlink, CE (CustomerEdge, user edge device) is the receiv...

Embodiment 2

[0070] see Figure 5 , the embodiment of the present invention provides a method for streaming media distribution in a virtual private multicast service, the method comprising:

[0071] 501: The switching point device caches the service data packets distributed by streaming media;

[0072] 502: When the network fails, the switching point device receives the protection switching request sent by the network device, and the protection switching request carries indication information, indicating the service data packet distributed by the streaming media in the VPMS instance;

[0073] 503: The switching point device sends the cached service data packet to the network device according to the indication information in the protection switching request.

[0074] Among them, before searching for the service data packets distributed by streaming media in the cache, it also includes:

[0075] Receiving the VPMS information corresponding to the marked virtual private multicast service VP...

Embodiment 3

[0083] see Figure 6 , the embodiment of the present invention provides a device for streaming media distribution in a virtual private multicast service, the device includes: a receiving module 601, a determining module 602 and an establishing module 603;

[0084] A receiving module 601, configured to receive VPMS information flooded or released by PE devices in the network;

[0085] Among them, see figure 2 As shown, the VPMS information includes:

[0086] VPMS ID: used to identify a VPMS instance;

[0087] PE identification: used to identify the PE equipment participating in the construction of the above-mentioned specified VPMS instance;

[0088] Information about the autonomous domain to which the PE device belongs:

[0089] Associated AC ID: the connection ID between PE and CE, which can usually be a vlan ID; figure 2 shows AC IDs with serial numbers from 1 to N, that is, AC-1ID to AC-n ID.

[0090] Associated AC direction: when the direction is downlink, CE (Cust...

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Abstract

The embodiment of the invention discloses a method for streaming media distribution in virtual special multicasting service, a device and a system thereof, which belong to communication field. The method comprises: receiving VPMS information flooded or distributed in network by a service provider edge device PE, wherein, the VPMS information comprises a load balancing strategy; determining VPMS source according to VPMS information; establishing VPMS topology based on the determined VPMS source; distributing streaming media service data message according to the VPMS topology. The device comprises: a receiving module for determining module and establishing module. The system comprises: a first PE device and a second PE device. The scheme provided by the embodiment of the invention realizes great reduction of maintenance cost, service-lossless load protection switching, and the improvement of end-user experience.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, device and system for streaming media distribution in a virtual private multicast service. Background technique [0002] L2VPN (Virtual Private Networks, Layer 2 Virtual Private Network Working Group) technology is launched to make full use of IP (Internet Protocol, Internet Protocol) / MPLS (Multiprotocol Label Switch, Multi-Protocol Label Switching) network resources to support data services. The IP / MPLS network provides transmission channels for Layer 2 data link packets, so as to realize the integration of IP network and data network. Currently, the L2VPN services that service providers can provide to users include VPWS (Virtual Private Wire Service, virtual private wire service) and VPLS (Virtual Private LAN Service, virtual local area network service). Among them, VPWS provides layer-2 bidirectional point-to-point services; VPLS provides layer-2 services emulating Etherne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/18H04L12/46H04L12/56H04L29/06H04L12/803
Inventor 秦霞郑合文郭凯
Owner HUAWEI TECH CO LTD
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