Time delay and bandwidth resource-based relay selection method

A technology of bandwidth resources and delay, applied in branch offices providing special services, data exchange details, data exchange through path configuration, etc. The effect of reduced transmit power, reduced interference, high spectral efficiency

Inactive Publication Date: 2011-02-09
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But at the same time, it will bring some problems such as delay in relay routing selection, bit error performance and power management.

Method used

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  • Time delay and bandwidth resource-based relay selection method
  • Time delay and bandwidth resource-based relay selection method
  • Time delay and bandwidth resource-based relay selection method

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Embodiment Construction

[0039] The invention adopts the combination of theoretical analysis, simulation modeling and actual testing. Below in conjunction with accompanying drawing and embodiment, specific embodiment of the present invention is described in further detail:

[0040] figure 1 It is a network topology diagram of a broadband wireless access system supporting radio and television services obtained according to the method of the present invention, wherein the circular area covered by the base station is the basic coverage layer of the network. Such as figure 1 Shown by the dotted circle centered on the base station in . figure 1 The position of the relay station should be in the edge coverage area of ​​the base station, and its coverage includes the "blind area" of the cell, and its receiving ability should be within the coverage area of ​​the base station, and there is a circular overlap with the coverage area of ​​the base station, such as figure 1 Shown by the dotted circle centered o...

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Abstract

The invention provides a time delay and bandwidth resource-based relay selection method aiming at broadcast and telecommunication services. The method comprises the following steps of: obtaining a system interruption selection decision value by acquiring time delay information and bandwidth resource information of a node, and selecting a relay node by using the decision value as a judgment threshold. Meanwhile, the invention provides an optimal relay selection cooperative communication method for minimizing interruption probability, and provides a relay routing selection method for supportingmulti-path transmission. The relay routing selection method can dynamically select proper routing according to the change of a network. The method can expand the coverage range of cells and eliminateor reduce communication blind points so as to increase the throughput of a system, improve the spectrum frequency of the system and enhance the quality of services.

Description

Technical field: [0001] The invention provides a relay method for a broadband wireless access system aiming at broadcast television frequency bands and supporting broadcast television services. The method can be applied to traditional cellular communication systems and some emerging broadband wireless access systems, such as mesh network, bluetooth, etc. It is also applicable to multimedia broadcasting services, and can also be applied to communication systems of some heterogeneous networks. Background technique: [0002] Lay the foundation for the R&D and application launch of the broadband wireless access system supporting the radio and television business, so as to promote the development of triple play technology and application in China. In broadcast TV bands and broadband wireless access systems that support broadcast TV services, the use of relay technology can expand the coverage of the cell, eliminate or reduce communication blind spots; it can also perform load bal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/18H04L12/56H04L12/28H04L12/24H04L45/16
Inventor 武穆清张超一栾林林徐春秀原燕斌陈玉焓苗建松郑凤申京张钦娟郭起霖温景容
Owner BEIJING UNIV OF POSTS & TELECOMM
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