Resource Scheduling Method for Wireless Mesh Networks

Abstract

The invention discloses a resource scheduling method of a wireless MESH network. The problem that a node in the prior art cannot rapidly and stably occupy the time slot is mainly solved. The technical scheme is as follows: 1) a basic frame structure of an IEEE802.16Mesh network MAC layer is modified to obtain a new frame structure, and then address serial numbers of all nodes are obtained from time slot serial numbers in the new frame structure; 2) an access node randomly distributes an address serial number for itself, and selects an initial support node to access into the network to acquire the address serial number of itself; 3) the access node schedules the network configuration time slot and the user equipment time slot on the basis of the distributed address serial number to avoid the confliction with other nodes; 4) the access node optimizes the address serial number scheduling according to itself service data size so as to realize the occupancy of the owner-less user equipment time slot UE. By use of the method disclosed by the invention, the time slot can be rapidly and stably occupied, and the method can be used for the data transmission of the wireless MESH network.

Description

Technical field [0001] The present invention belongs to the field of communication technology, and further relates to a resource scheduling method, which can be used in a wireless MESH network to ensure a large amount of service data transmission. Background technique [0002] Mesh topology network is a network that uses a multipoint-to-multipoint topology. The IEEE802.16 protocol defines two scheduling methods for Mesh topology networks: centralized scheduling and distributed scheduling. [0003] Centralized scheduling relies too much on the BS root node of the Mesh network. After the base station fails, the entire network will be paralyzed, so it is used less. [0004] Distributed scheduling can be divided into cooperative distributed scheduling and non-cooperative distributed scheduling. The scheduling messages of non-cooperative distributed scheduling are only used to establish requests and responses between nodes that need to send data, and do not need to negotiate with other n...

AI Technical Summary

Problems solved by technology

However, for the sea-level communication environment, when the number of nodes is not too many and the communication channel is relatively stable, the main task of the MAC layer is to transmit a large amount of business data, which needs to occupy time slot resources quickly and stably. If IEEE802.16Mesh is used For the cooperative distributed scheduling algorithm of the network MAC layer, the frame structure needs to have a fixed time slot of the scheduling control subframe, and the message broadcast in the scheduling control subframe needs to include the scheduling of the next transmission time slot of the scheduling control message Information and scheduling information occupying data subframe time slots, as well as the impact of the amount of computation brought by the scheduling algorithm, on the whole, it is impossible to realize the rapid and stable occupation of time slot resources of nodes, the transmission of node management messages and business data not guaranteed

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