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Wireless multicast proxy method in hybrid network living broadcast system

A hybrid network and wireless group technology, applied in broadcast-related systems, radio/inductive link selection arrangements, broadcast devices, etc., can solve problems affecting wireless node data interaction, network bandwidth and node mobility, network instability, etc. , to achieve the effect of reducing repeated data requests and responses, reducing the possibility of network congestion, and stabilizing continuous buffering and playback

Inactive Publication Date: 2008-08-20
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, specifically, there are two main problems in deploying a live streaming system in a wireless LAN: network bandwidth and node mobility
Nodes frequently joining and exiting a certain network will bring frequent changes to the network topology, resulting in network instability and affecting data interaction between wireless nodes.

Method used

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  • Wireless multicast proxy method in hybrid network living broadcast system
  • Wireless multicast proxy method in hybrid network living broadcast system
  • Wireless multicast proxy method in hybrid network living broadcast system

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Experimental program
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example

[0109] The configuration of the whole system is shown in Table 1.

[0110] Table 1 Test instance hardware configuration

[0111] machine (quantity)

[0112] Wired Desktop(4)

[0113]Three program sources with different code streams are used, as shown in Table 2 respectively.

[0114] Table 2 Three different streaming media

[0115] name

[0116] The wireless network bandwidth usage rate occupied during the live broadcast can reflect the stability and scalability of the live broadcast system. The lower the wireless bandwidth occupied, the possibility of network congestion affecting the quality of service will be greatly reduced, and the scale that can be expanded will be much larger than that of a system with high bandwidth occupation.

[0117] As shown in Figure 8(a), it is a schematic diagram of wireless bandwidth occupation for watching the program "Kung Fu" in a non-multicast mode, and all five wireless nodes acquire media data in a common P2...

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Abstract

The present invention discloses a wireless multicasting acting method in hybrid network living broadcast system, whose step is: (1) node added into multicasting address of frequency channel, acting heartbeat bag is initialized as multicasting acting if wireless multicasting is not received, otherwise new multicasting acting is decided by competition. (2) wireless multicasting acting, broadcast source and wire node are transmitted interactive, received buffering data multicast to common wireless node of the present wireless network, and responses its data request; (3) common wireless node initializes buffer zone according to heartbeat bag generated by multicasting acting, and requests data to acting according to buffer zone filling situation. (4) if common wireless node roam into new network which has multicasting acting, service can also be accepted, otherwise node-self becomes to multicasting acting. (5) if wireless multicasting acting roams out of original network, all of common wireless node in original network competes new multicasting acting, if new network has multicasting acting, new multicasting acting is decided by competition, otherwise multicasting acting is maintained.

Description

technical field [0001] The invention belongs to the field of computer applications, and in particular relates to a wireless multicast agent method WiAM (Wireless Multicast Agent Mechanism) in a hybrid network live broadcast system. The method is particularly suitable for a wireless environment with limited network bandwidth and client computing capabilities. Background technique [0002] In recent years, the rapid development of wireless communication technology has made popular applications of mobile TV and mobile TV based on high-speed 2.5G / 2.75G / 3G network or terrestrial digital TV broadcasting in the ascendant. Mobile TV and mobile TV are transmitted to mobile terminals through broadcasting. TV programs mainly rely on mobile communication networks or radio and television networks, relying on complex networks and numerous relay devices to cover mobile users and provide reliable service quality. Although it is very difficult to implement and deploy the system, and it lacks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04H60/91H04Q7/22
Inventor 金海蒋文斌廖小飞袁志廖光贤李海翔张帆潘正秋
Owner HUAZHONG UNIV OF SCI & TECH
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