Wireless multi-hop trunk network combining method for supporting multimedia broadcasting service

A multimedia broadcasting, wireless multi-hop technology, applied in radio relay systems, devices that provide special services in branches, wireless communications, etc. Improve, reduce interference, and ensure the effect of service quality

Active Publication Date: 2009-10-28
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of multi-hop wireless self-organizing technology, the use of multi-hop relay stations to expand coverage has become a hot spot recently. However, all relay-related technologies currently focus on the amplification and forwarding of relay data, without alignment. The expansion of relay technology, and the characteristics of relay technology are not fully utilized to enhance the network structure and hope framework

Method used

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  • Wireless multi-hop trunk network combining method for supporting multimedia broadcasting service
  • Wireless multi-hop trunk network combining method for supporting multimedia broadcasting service
  • Wireless multi-hop trunk network combining method for supporting multimedia broadcasting service

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Embodiment Construction

[0058] figure 1 The wireless multi-hop relay network topology structure supporting multimedia broadcasting services obtained according to the method of the present invention is given, wherein the base station only covers a small area and constitutes the basic coverage layer of the network, such as figure 1 Shown in the blue area. figure 1The gray ring area in the figure is the inner coverage area of ​​the relay station determined based on the receiving capability and coverage of the relay station. In this area, the signals of the base station and the relay station can be received, so the combined coverage layer of the network is formed. The white ring area Extend the overlay for the outside of the repeater. The service area of ​​a single relay station is much smaller than the coverage area of ​​the base station, and it is mainly used for supplementary coverage (such as figure 1 shown in the dotted line and dot-dash line circle area), and to reduce interference between ce...

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Abstract

Comparing with the unicast, the invention reduces the selection of relay nodes in radio multi-hopping relay network so as to easily realize the network transmission. The method uses base stations and relay stations as basic networking units to commonly cover three-layer region of one cell; wherein, the relay station covers two-layer region to expand the coverage range of base station, and meanwhile reduces the interference from neighboring cells. For supporting said relay networking solution supporting multimedia broadcast service, the invention also provides a frame structure of hierarchical coverage transmission fitting the relay network; by TDMA approach, the terminal can self-adaptively receive the broadcast signals from base station and relay station; by increasing protection time-delay, the maximum diversity gain can be obtained.

Description

technical field [0001] The invention is specially aimed at the multimedia broadcasting service and provides a relay-based networking solution. This solution can be applied to traditional cellular mobile communication systems and emerging wireless broadband access systems, such as wireless local area networks, wireless metropolitan area networks, etc., as well as wireless broadcast television systems, and heterogeneous wireless communication systems. Background technique [0002] The traditional cellular mobile communication system adopts the cellular structure, but the fourth-generation (4G) wireless communication system with ultra-high data rate still adopts the traditional cellular structure, and there will be many problems. The main reasons are: first, the transmission rate of the 4G system is higher than that of Third generation (3G) systems are two levels higher. In the case of a given transmit power level, the symbol (bit) energy will decrease linearly with the increa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/14H04B7/26H04B7/02H04W88/02H04L12/18H04L12/56H04L12/28
Inventor 彭木根袁广翔朱松王文博
Owner COMBA TELECOM SYST CHINA LTD
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