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Communications system, slave node, route building method, and program

A communication system and communication path technology, applied in the field of communication systems, can solve problems such as unstable routing

Active Publication Date: 2012-11-21
KYUSHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In addition, in the existing minimum propagation loss routing, there is a problem that the routing becomes unstable due to the change of the transmission path

Method used

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  • Communications system, slave node, route building method, and program
  • Communications system, slave node, route building method, and program
  • Communications system, slave node, route building method, and program

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Embodiment

[0041] figure 1 It is a figure which shows the outline|summary of the communication system 1 which is an embodiment of this invention. The communication system 1 is a wireless rotary system, and each base station is fixedly installed. There are two types of base stations in the communication system 1, which are a core node 5 (an example of a "core node" in the claims of the present application) and a plurality of slave nodes 7 wired to the backbone network 3 1 ,...,7 10 (An example of a "slave node" in the claims of this application). Wireless communication can be carried out between base stations (hereinafter referred to as "relay lines" for wireless communication lines between base stations). figure 1 As shown, a tree-type path centered on core node 5 is constructed. In addition, each base station has an area (cluster cell: cluster cell) where wireless communication can be performed. For example, if a portable terminal 9 that can move like a mobile phone and can commu...

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Abstract

The present invention offers a communications system, etc., capable of building a stable relay path even if a propagation path fluctuates due to RSSI fluctuation. In a wireless backhaul system, when building a communications path of a tree structure with a core node for a root, in each respective slave node, successive averages of RSSI of n routing packets received after the reset routing packet received most recently from the same transmission source node are used to determine whether to treat the transmission source node as a parent in the tree structure. It is possible to acquire an asymptotically stable relay path from the RSSI following a generally logarithmic normal distribution, and in particular, by using successive averages.

Description

technical field [0001] The present invention relates to a communication system, a slave node, a routing construction method and program, and more particularly to a communication system including a core node connected to a backbone network and a plurality of slave nodes wirelessly connected to the core node directly or via other nodes. Background technique [0002] As a way to realize a new generation of broadband mobile, a cellular system in which a group of base stations in a small cell with a radius of tens of meters is wirelessly connected by a multi-hop relay has been studied. In this system, several base stations called core nodes in the base station group are connected to the backbone network by wires, and other nodes communicate with the backbone network through wireless multi-hop relays via the core nodes. [0003] Such a wireless relay network is generally called a wireless backhaul network. Its stable use and large capacity achieve the realization of high-quality ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/12H04W40/28H04W84/18
CPCH04W40/14H04W40/24H04W40/08Y02D30/70
Inventor 古川浩金光日
Owner KYUSHU UNIV
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