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Controlling method and system for multicast data transmission

A multicast data and data transmission technology, applied in digital transmission systems, transmission systems, data exchange networks, etc., can solve problems such as poor security, increased SS processing, and inability to perform on-demand forwarding, saving air interface bandwidth , the effect of improving safety

Inactive Publication Date: 2011-12-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] In the existing solution, the multicast data is copied to all connected SSs through the multicast service flow, which increases SS processing and affects SS performance
It cannot be forwarded on demand, even if the SS does not need multicast data, it will be forwarded to the SS, which is not safe

Method used

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  • Controlling method and system for multicast data transmission
  • Controlling method and system for multicast data transmission
  • Controlling method and system for multicast data transmission

Examples

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Embodiment Construction

[0054] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0055] Here we first explain the concepts of IGMP snooping (IGMP snooping) and IGMP proxy (IGMP proxy). Both IGMP snooping and IGMP proxy are common application methods of the IGMP protocol. The device running IGMP snooping will "listen" to the IGMP message transmitted between the host and the multicast router, so as to establish and maintain the multicast address table on the device, which is characterized by only copying the IGMP message without changing / terminating the host Packet direction between (Host) and Multicast Router (Multicast Router). Such as figure 2 As shown in the figure, IGMP protocol packets are exchanged between the Host and the Multicast Router. The forwarding chip of the device identifies and captures the IGMP packets and copies them to the CPU, which is processed by the upper layer software without changing the direction of the IGMP packets....

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Abstract

The provided method for controlling MB data transmission comprises: 1. BS obtains IGMP message; 2. BS processes the obtained IGMP message; and 3. BS sends or stops transmission to UE. This invention realizes IGMP snooping / proxy on WiMAX device, saves resource, improves system security, and realizes the perfect combination of WiMAX protocol and IGMP MBCP.

Description

technical field [0001] The invention relates to the field of access systems, in particular to a method and system for controlling multicast data transmission. Background technique [0002] The full name of WiMAX is World Interoperability for Microwave Access, that is, the global interoperability system for microwave access. WiMAX is a kind of wireless broadband access technology, and its technical standard is IEEE 802.16. IEEE 802.16 mainly formulates the physical layer (PHY) and medium access control layer (MAC) specifications of the wireless access system air interface working in the 2-66GHz frequency band, as well as the conformance test related to the air interface protocol and different wireless Coexistence specification between access systems. According to whether it supports mobile features, the IEEE802.16 standard can be divided into fixed broadband wireless access air interface standards and mobile broadband wireless access air interface standards. The mainstream ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/851H04W4/06
Inventor 柯波
Owner HUAWEI TECH CO LTD