Network reconfiguring method, system and system node in multi-hop wireless communication network

Abstract

The present invention provides a network temporary re-distribution method in a multi-hop wireless communication network. The method comprises performing temporary re-distribution dynamically to the network topology structure according to the difference between georgraphical distance and skip distance between network nodes which are used as communication endpoints, therefore, reducing the skip distance between network nodes which are used as communication endpoints, shortening the communication time delay in the multi-hop wireless communication network, improving the utilization ratio of wireless resources and reducing power consumption of network nodes. The method has a more remarkable effect for the multi-hop wireless communication network adopting a tree topology structure and strictly requiring low power consumption. The present invention also provides a multi-hop wireless communication network system capable of performing the network temporary re-distribution and corresponding network nodes.

Description

technical field [0001] The present invention relates to a multihop wireless communication (Multihop wireless communication) technology, in particular to a network temporary reconfiguration method in a multihop wireless communication network and the corresponding system and network nodes. Background technique [0002] In a multi-hop wireless communication network with fixed network nodes, after each network node is powered on, the topology of the network can be determined and then kept unchanged, unless the failure of individual network nodes or changes in channel conditions lead to network failure. Reconfigure. Among them, the selection of the basic topology type (such as star, mesh, tree) must take into account the specific application requirements and its impact on algorithm design (such as algorithm design for routing, algorithm design for wake-up / sleep mechanism, etc.) influences. [0003] If some or all of the network nodes are movable, the network topology must be up...

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Problems solved by technology

[0006] It can be seen that the communication between the mobile gateway and some wireless nodes will need to go through many hops due to the requirements of the network topology, and there is a significant difference from the actual geographical distance between the mobile gateway and the wireless nodes, resulting in multi-hop wireless communication. Disadvantages of long data forwarding delay in the network, large total power consumption of wireless nodes, and low utilization of wireless resources

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