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Broadcast scheduling method for industrial wireless Mesh network

A broadcast scheduling and industrial wireless technology, applied in wireless communication, electrical components, etc., can solve the problem of low utilization of broadcast scheduling resources

Inactive Publication Date: 2016-07-06
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to overcome the defect of low resource utilization rate of broadcast scheduling in the industrial wireless Mesh network in the prior art, thereby providing a broadcast scheduling method of an efficient time-delay optimal industrial wireless Mesh network

Method used

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Embodiment Construction

[0035] now attached figure 2 The present invention is further described.

[0036] Firstly, a unified description is given to the concepts involved in the implementation of the method of the present invention.

[0037] Scheduling: The "scheduling" mentioned in the specific solutions of the present invention refers to broadcast scheduling. When a node is "scheduled", it becomes a communication node between the node and all its child nodes. The node sends a broadcast data packet to the child nodes of the node at the time slot indicated by t and the channel indicated by c in a broadcast manner, and all child nodes of the node receive the broadcast data packet in the same time slot and the same channel.

[0038] Scheduling priority: a two-dimensional priority composed of slot priority and channel priority. According to the scheduling priority, the node sequence to be scheduled can be determined, the scheduling order of the nodes can be determined, and the limited wireless resou...

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Abstract

The invention discloses a broadcast scheduling method for an industrial wireless Mesh network. The method comprises the following steps: step 1), determining a scheduling priority of each node in a network spanning tree; step 2), for each layer of the spanning tree, storing all nodes to be scheduled in a current layer of the spanning tree in one node sequence to be scheduled according to the scheduling priority of the nodes; step 3), judging a current channel pointer, if the current channel pointer points to a first channel, then scheduling residual unscheduled nodes in the node sequence to be scheduled at a current time slot; otherwise, calculating a channel feasible node sequence of the current time slot according to the node sequence to be scheduled; then scheduling nodes in the channel feasible node sequence, and once scheduling each node, updating a channel pointer value once and the node sequence to be scheduled; and after the channel of the current time slot is filled, filling the channel of the next time slot and setting the channel pointer as the first channel of the time slot. The broadcast scheduling method for the industrial wireless Mesh network provided by the invention improves the wireless resource utilization rate of broadcast scheduling, and reduces the transmission delay.

Description

technical field [0001] The invention relates to a wireless sensor network, in particular to a broadcast scheduling method for industrial wireless Mesh network resource scheduling. Background technique [0002] Wireless sensor networks have the characteristics of low cost, strong flexibility, strong scalability, and convenient installation. Therefore, they have very broad application prospects in many fields such as military defense, environmental monitoring, and remote control in dangerous areas, especially in the field of industrial control. Also attaches great importance to the development of industrial wireless sensor networks. Industrial wireless technology is an emerging wireless communication technology for short-range, low-rate information exchange between devices in the 21st century, suitable for use in harsh industrial field environments. Compared with the wired industrial communication network, the industrial wireless network is a function expansion and technologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W72/566
Inventor 宋佳慧胡亚辉张宇
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI
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