TDMA ad hoc network expansion method and node gateway

Abstract

The invention discloses a TDMA ad hoc network expansion method, comprising the following steps: performing data exchange through a first node gateway between a first sub-network and a second sub-network in a TDMA ad hoc network, wherein the first node gateway is registered in the first sub-network as a node of the first sub-network and is also registered in the second sub-network as a node of the second sub-network; and in addition to the first node gateway, also enabling a second node gateway to perform data exchange between the first sub-network and the second sub-network, and ensuring that the second node gateway is registered in the first sub-network as a node of the first sub-network and is also registered in the second sub-network as a node of the second sub-network. According to the TDMA ad hoc network expansion method disclosed by the invention, existing planar network protocols can be upgraded with relatively low cost, and the problem of too long development cycle existing in the process of implementing a multi-layer ad hoc network protocol can be avoided; and the data transmission between the sub-networks adopts a multi-gateway mode, and thus the data transmission efficiency can also be greatly increased.

Description

technical field [0001] The invention belongs to the technical field of wireless ad hoc networks, in particular to a TDMA ad hoc network extension method. Background technique [0002] In railway, exploration, electric power, forestry, petrochemical and other industries, the application of ad hoc network has the following characteristics. The network scale is relatively small, but the communication is extremely frequent. There are various types of messages (voice, data, GPS, commands, diagnostics, etc.), and the data has horizontal flow within the network, and sometimes multicast, unicast or even broadcast on the entire network. The data reliability requirements are very high and cannot be Wrong data, duplicate data, or missing data, the length of the message varies, sometimes dozens of bytes, sometimes hundreds of bytes or even thousands of bytes, sometimes it is a continuous data flow . [0003] In the narrowband ad hoc network protocol using TDMA, the maximum number of n...

AI Technical Summary

Problems solved by technology

Existing network expansion methods generally adopt a hierarchical topology. The disadvantage of this method is that,

[0005] 1) The implementation of the protocol is complex, and it is necessary to implement the cluster head election algorithm and the cluster maintenance mechanism;

[0006] 2) The data between subnets needs to be forwarded hierarchically through the cluster head, and the cluster head will become the bottleneck of the entire ad hoc network

These implementations have certain industry and device limitations

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