MAC protocol implementation method and device for adjusting contention probability based on energy state

A technology of energy state and probability, applied in wireless network protocol, wireless communication, network topology, etc., to achieve the effect of improving transmission performance, ensuring reliability, and balancing energy consumption

Active Publication Date: 2019-08-09
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the object of the present invention is to propose a MAC protocol implementation method and device based on energy state adjustment competition probability, which solves the coordination problem of two sensor nodes and the stability problem of the network in the hybrid wireless sensor network

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  • MAC protocol implementation method and device for adjusting contention probability based on energy state
  • MAC protocol implementation method and device for adjusting contention probability based on energy state
  • MAC protocol implementation method and device for adjusting contention probability based on energy state

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0022] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0023] The embodiment of the present invention considers the following aspects when designing the MAC layer protocol of the hybrid wireless sensor network: First, there are battery-powered sensors with a limited life cycle in the network, and their energy vulnerability...

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Abstract

The invention discloses a MAC protocol realization method and device for regulating competition probability based on an energy state. The comprises the following steps: a convergent node sends a polling packet to all sensor nodes; an active sensor node computes self competition probability according to the polling packet, and compares a generated random number with the competition probability; when the generated random number is less than the competition probability, the active sensor node sends a data packet to the convergent node; the convergent node updates the standard competition probability according to the received data number and collision condition, and enter the next polling. Through the adoption of MAC protocol realization method and device for regulating competition probability based on the energy state disclosed by the invention, the low competition probability is set for a battery-powered sensor and an energy harvesting type sensor with low energy absorption rate, thereby balancing the energy consumption of the whole network; reliability of the network within long time is guaranteed, and the transmission performance of the network is improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a MAC protocol implementation method and device for adjusting competition probability based on energy state. Background technique [0002] In recent years, wireless sensor networks have been widely used in various scenarios, such as health management, industrial measurement, and agricultural monitoring. The scale of sensor networks under these applications is very large, and the traditional battery-powered wireless sensor network cannot meet the demand due to its limited life cycle. Therefore, energy harvesting wireless sensor network (EH-WSN) has received extensive attention. Energy-harvesting sensors can absorb energy from the external environment (solar energy, wind energy, electromagnetic energy, etc.), so their life cycle can ideally be infinitely long. However, because most of the energy in the external environment changes dynamically and intermittently in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/06H04W84/18
CPCH04W74/06H04W80/00H04W84/18
Inventor 窦四君刘丹谱张志龙尹长川
Owner BEIJING UNIV OF POSTS & TELECOMM
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