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A communication method used in mobile Ad hoc network

A wireless self-organization and communication method technology, applied in the field of communication, can solve the problem of high requirements for mobile nodes, achieve less competition and conflicts, and achieve high-efficiency occupancy effects

Inactive Publication Date: 2012-01-04
BEIJING UNIV OF POSTS & TELECOMM
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this protocol requires the support of GPS (Global Positioning System), which has high requirements for mobile nodes

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  • A communication method used in mobile Ad hoc network
  • A communication method used in mobile Ad hoc network
  • A communication method used in mobile Ad hoc network

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Experimental program
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Embodiment Construction

[0058] The invention provides a reasonable, efficient and feasible communication method in the wireless ad hoc network from the perspective of layered design. In the network layer, there is no infrastructure for wireless mobile ad hoc networks, and the rapid changes in the wireless channel environment and the mobility of terminals cause the network topology to change constantly. An adaptive search algorithm and route maintenance algorithm (broadcast routing protocol algorithm) are proposed. At the same time, a MAC layer protocol design method is proposed for the performance indicators of network throughput and average delay, which can solve the problem of multi-user sharing of limited channel resources. The combination of the design method of the network layer and the medium access control layer proposed by the present invention is applied in the wireless self-organizing network, which can realize the basic functions of the network, run stably, and have excellent performance, s...

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Abstract

The invention discloses a communication method in a wireless Ad hoc network. The method comprises the following steps: transmitting a broadcast message to the network by each node circularly used as the broadcast source node in the network, wherein the message the broadcast ending time of the broadcast source node in the data sharing period, and each node calculates the broadcast time when used as the broadcast source node according to the broadcast message; and re-transmitting the broadcast message after the node receives the broadcast message to achieve broadcast communication between the nodes in the network, wherein a distance-based waiting time random estimation delay selection algorithm is adopted by the network layer in the re-transmission process to achieve back-off, a combined network layer is adopted by the medium access control layer to achieve unified back-off, and the medium access control layer is CSMA / CA mechanism based on IEEE802.11 protocol. The method solves the problems of broadcast route maintenance and channel occupation in the wireless Ad hoc network.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a communication method in a wireless ad hoc network. Background technique [0002] Compared with traditional wired and cellular networks, wireless mobile ad hoc networks have no infrastructure, each node may enter and leave the network at any time, and the entire network operates in a distributed manner. However, the basic requirements for connectivity and service transmission in traditional networks also need to be met in wireless mobile ad hoc networks. At present, the main difficulties in mobile ad hoc networks are routing protocol, quality of service, MAC (media access control layer) protocol, energy consumption, node mobility management, and security issues. [0003] The quality of the MAC protocol directly affects the quality of network throughput, average delay and other performance indicators, and the rapid changes in the wireless channel environment in the ad hoc ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04W72/12
Inventor 李屹纪红李曦刘伟李亭王仕果罗常青梅敬青
Owner BEIJING UNIV OF POSTS & TELECOMM