Wireless MESH network distributed resource distribution method based on TDMA

Abstract

The invention discloses a wireless MESH network distributed resource distribution method based on TDMA, and the method obtains the time slot application condition of all nodes in a two-hop range through the information interaction among adjacent nodes, and solves a problem of the difference of demands for data transmission among all nodes through adding node load parameters in a time slot application process. The method employs an optimized priority list to distribute time slots for all nodes in a time slot distribution process, and enables the time slots of all nodes to be distributed in a time frame in an approximately uniform manner. The method selects a node time slot transmission sequence in a process of data transmission according to the path of each data flow, and enables the time slot sequence of the data flows to be consistent with the node sequence of the path, thereby further reducing the time delay and improving the reuse degree of the time slots. The method achieves the conflict-free distribution of distributed wireless MESH network channel resources, reduces the communication time delay, improves the utilization rate of channels and the throughput capacity of a network, and is suitable for a distributed wireless MESH network.

Description

technical field [0001] The invention relates to the technical field of wireless mesh networks, in particular to a method for allocating distributed resources of a TDMA-based wireless MESH network. Background technique [0002] The wireless MESH network is a dynamic self-organizing network architecture that can be continuously expanded. It has the characteristics of no center, self-organization, multi-hop, and dynamic topology. With advantages such as high bandwidth, it has become one of the "last mile" network access solutions. The wireless MESH network evolved from the AdHoc network and is a combination of AdHoc network technology and access network technology. However, because the wireless MESH network has some characteristics that the wireless AdHoc network does not have, the protocol of the AdHoc network cannot be well applied to the wireless MESH network. In recent years, with the rapid development of the Internet and the emergence of various application services, the...

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Problems solved by technology

Specifically, a node-based time slot allocation method is adopted. In this invention, each time slot is divided into a control part and a data part, and the control part is divided into two stages, and each stage includes N (N is the largest The number of nodes) mini-slots are used to send allocated time slot packets, the control overhead in this time slot allocation method is too large, and the problem of delay jitter is not considered

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