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High-reliability adaptive MAC layer scheduling method

A scheduling method, adaptive technology, applied in advanced technology, climate sustainability, sustainable communication technology, etc., can solve problems such as non-compliance with standards

Active Publication Date: 2019-04-19
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these extensions are not standard compliant and require modifications to the superframe structure

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  • High-reliability adaptive MAC layer scheduling method
  • High-reliability adaptive MAC layer scheduling method
  • High-reliability adaptive MAC layer scheduling method

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Embodiment Construction

[0042]The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the present invention.

[0043] According to the accompanying drawings, the technical solution of the present invention is described in detail.

[0044] A described highly reliable adaptive MAC layer scheduling method comprises the following steps:

[0045] S101. Establish a model of a wireless sensor network.

[0046] Specifically, the wireless sensor network environment model is represented by a three-dimensional array E=(α, β, p), wherein α represents the action se...

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Abstract

The invention discloses a high-reliability adaptive MAC layer scheduling method. The problem that a large amount of energy consumption is caused by cluster head nodes in a wireless sensor network dueto idle listening is mainly solved. The method comprises the steps of building a model for the wireless sensor network; generating a specific frame format, and embedding a queue occupancy rate and a time delay in a frame control field; initializing an action set, a selection probability set and a feedback set; enabling a coordinator to interact with a surrounding environment by using a learning automaton method, and updating an action and a state of the coordinator; dividing the whole learning process into three stages, namely, an initial stage, an exploration stage and a greedy stage, and adopting corresponding search strategies; evaluating an effect of action and environment interaction, and updating the feedback and selection probability sets; and selecting relevant parameters for determining a duty ratio based on the feedback set, so that adaptive MAC layer scheduling is achieved. The adaptive adjustment of the duty ratio by the nodes in the operation period is ensured, and the power consumption is minimized; and the method has a wide application value.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, in particular to a highly reliable self-adaptive MAC layer scheduling method. Background technique [0002] Wireless sensor network (WSN) nodes are typically battery powered, and in many deployment environments, battery replacement or electromagnetic charging is expensive or even infeasible. Therefore, low power consumption is considered to be the most important indicator of wireless sensor network communication protocols. Specifically, a node does not know when data occurs from other nodes, so even when the node is idle, the transceiver will continue to be in receive mode. Idle listening is considered to be one of the main problems of energy waste. [0003] Currently, the most widely adopted IEEE802.15.4 standard defines several different types of nodes: full-function devices (FFDs), also known as beacon-enabled devices, can operate as personal area network coordinators, clust...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04W24/06H04W84/18
CPCH04L41/044H04L41/145H04W24/06H04W84/18Y02D30/70
Inventor 刘元安张洪光王怡浩范文浩吴帆谢刚
Owner BEIJING UNIV OF POSTS & TELECOMM
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