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Congestion control based wireless sensor network routing optimization method

A wireless sensor and congestion control technology, applied in network topology, wireless communication, network flow/resource management, etc., can solve the problem of lack of node energy, continuous consideration of uncongested effective control, etc.

Inactive Publication Date: 2015-12-23
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a routing optimization method for wireless sensor networks based on congestion control. problems such as defects

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  • Congestion control based wireless sensor network routing optimization method
  • Congestion control based wireless sensor network routing optimization method
  • Congestion control based wireless sensor network routing optimization method

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Embodiment Construction

[0048] The invention is a wireless sensor network routing optimization method based on congestion control. The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0049] The present invention overcomes the shortcomings of the existing wireless sensor network routing method, introduces the basic concepts and principles of hydrology, and establishes a node queue model, constructs link gradient and flow radius functions based on node geographic location and data packet service rate, and finally according to The link flow rate assigns appropriate routing probability to each path, thereby effectively optimizing the energy consumption of the entire network and reducing network delay and packet loss rate.

[0050] The present invention comprises the following steps:

[0051] Step 1: Ac...

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Abstract

The invention belongs to the technical field of wireless communication, and particularly relates to a congestion control based wireless sensor network routing optimization method. The method comprises the steps of establishing a link gradient function from each node to a prior neighbor node according to geographical location information of the nodes; constructing a node queue model, and establishing a flow radius function of each link according to the data packet service rate of the nodes; constructing a link flow rate model among the nodes according to the established link gradient function and the flow radius function; establishing a routing forward probability function by the nodes according to difference in each link flow rate so as to complete establishment of routing; and establishing a congestion detection function so as to carry out real-time detection on the congestion degree of a network, and carrying out local routing maintenance once node congestion occurs. According to the invention, the link gradient function is established through using basic conceptions and principles in hydrology for reference, thereby sufficiently realizing effectiveness of node energy consumption, enabling energy consumption of the whole network to be optimized, and having good real-time performance and reliability.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a routing optimization method for a wireless sensor network based on congestion control. Background technique [0002] Due to its low cost, low power consumption, self-organization and other advantages, wireless sensor networks are widely used in environmental monitoring, military applications, road traffic, medical and health and other fields. Routing protocols have always been a research hotspot in WSNs. Traditional routing protocols, such as LEACH and EEUC, aim at prolonging the network life cycle for the energy-constrained characteristics of WSN nodes. However, in some scenarios such as power consumption information collection, transmission line detection, etc., nodes can be continuously powered by the line, and the energy is continuous. The previous routing algorithm may lead to unreasonable route selection, resulting in a waste of network energy; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W28/14H04W40/24
CPCH04W28/0289H04W28/14H04W40/24H04W84/18Y02D30/70
Inventor 唐良瑞丁伟赵琳樊冰宋卓然沈方宋颖巍刘岩杨继业赵德伟孙岩南哲李华蒋理强立明佟彦丽杨博张泽宇
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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