Wireless Ad Hoc network topology structure realization method

Abstract

The invention relates to the wireless communication field and particularly relates to a realization method for mutually connected topology structures between nodes of a wireless Ad Hoc network (mobile peer-to-peer network, wireless Ad-Hoc network ). The wireless Ad Hoc network topology structure realization method comprises an arrangement method for wireless channels of nodes in a network, a choosing and connection method of a parameter node for circumference nodes and network rim node emission power control method. In the wireless Ad Hoc network topology structure realization method and in the control process of the wireless Ad Hoc network topology structure, a knowledge scope needed by each node is small, only state information of each node in a two-hope range is needed to be known, communication load of control information between nodes is low, free movement of the node is supported and the network expandability is strong. The wireless Ad Hoc network topology structure realization method overcomes a difficulty that part of the node hold multiple roles in the current wireless Ad Hoc network so as to reduce energy consumption of the integral network.

Description

Technical field [0001] The present invention relates to the field of wireless communication, and more specifically relates to a method for realizing the topology structure of interconnection between nodes in a wireless Ad Hoc network (also known as a mobile peer-to-peer network, a wireless ad hoc network, etc.). Background technique [0002] The wireless Ad Hoc network is composed of multiple terminal nodes with wireless transceiver functions. The communication between them does not require the support of fixed network infrastructure (such as base stations or hot spots). Each terminal node can communicate with wireless radio frequency Other nodes within the range communicate directly, and can achieve longer-distance communication through inter-node information forwarding (jumping). Nodes in the network can move freely, and the wireless topology of the network can change at will and is unpredictable. Generally speaking, the route between nodes in the Ad Hoc network includes m...

AI Technical Summary

Problems solved by technology

WiFi is not developed for wireless ad-hoc networks. Although the Ad Hoc mode was maintained during the development of IEEE802.11, this Ad Hoc mode is only suitable for simple point-to-point connections, and it encounters great challenges in realizing multi-hop Ad Hoc networks. There is no mature solution yet

[0005] 2) ZigBee is the commercial name of the standard IEEE 802.15.4 technology. The channel access method of the IEEE 802.15.4 standard also adopts the CSMA / CA mechanism. Although the standard defines two topological working modes of star and end-to-end, but Both of these two modes need to be negotiated by the coordinator (PAN, Personal Area Network) to realize the communication between nodes. The current standard only clearly defines the message exchange and operation in the star topology, and does not define the end-to-end topology in detail. In a large-scale network, it is impossible for all nodes to use the same PAN coordinator. Although the standard allows communication between PAN coordinators, the communication method is not clearly defined.

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