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Energy-based multi-path routing method for wireless network

A wireless network and multi-path technology, applied in the direction of wireless communication, energy consumption reduction, energy-saving ICT, etc., can solve the problems that are difficult to fully utilize, do not fully consider node energy consumption, etc., to improve energy efficiency, reduce protocol overhead, and extend the network The effect of longevity

Inactive Publication Date: 2011-07-27
江苏中科泛联物联网科技股份有限公司
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Problems solved by technology

Although the above method is simple, easy to implement, and can reduce the energy consumption of nodes to a certain extent, it does not fully consider how to balance the energy consumption of nodes in the network more effectively to prolong the life of the network
Moreover, most of the existing distributed wireless network energy-saving routing methods are path discovery / maintenance methods with a single path per session. Even if a multi-path method is used, there are great limitations in the optimization of path selection, and it is difficult to make full use of the nodes in the network. energy and use the width of the network to balance the energy loss in the network

Method used

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Embodiment Construction

[0015] The routing scheme involved in the present invention is based on the following conditions:

[0016] 1) The nodes are powered by batteries and cannot be recharged during work;

[0017] 2) The node adopts omnidirectional antenna;

[0018] 3) Each node has power control capability and can adaptively judge the energy required for communication with neighboring nodes. For example, the minimum power required for successful transmission between adjacent node i and node j is Pij, then we call the link ( The power value of i, j) is Pij;

[0019] 4) The node does not need to know the location information, and does not know the global topology and traffic distribution information in the network;

[0020] 5) Nodes can move freely or be stationary.

[0021] For a path PATH from s to t, its cost is recorded as COST(P), and the calculation method is as follows:

[0022] --Formula 1)

[0023] in puv represents a link ( u , v ) the minimum power val...

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Abstract

The invention discloses an energy-based multi-path routing method for a wireless network, and relates to a wireless network. A method for discovering a path comprises the following steps that: a source node initiates the routing process in a flooding routing request (RREQ) signaling mode; an intermediate node sets forward delay time according to a quality status of a link receiving an RREQ signaling and residual energy information of the intermediate node; in the delay process, if a better path is received, path information and the delay time are updated; each intermediate node only forwards the RREQ signaling once; and a destination node obtains a plurality of energy-saving paths according to the received RREQ message. By the routing method disclosed by the invention, a plurality of energy efficient paths can be discovered according to the path discovering process based on requirement, so that the node energy efficiency is improved, the path discovering frequency is reduced, the protocol overhead is reduced, and the network service life is prolonged; and the routing method is easy to implement on the conventional wireless node platform.

Description

technical field [0001] The invention relates to a wireless network, in particular to an energy-saving routing method for a wireless network. Background technique [0002] Currently, wireless network technology is developing rapidly, and one of the important technical bottlenecks is power supply. Because the units of wireless networks—nodes are powered by batteries and cannot be charged during use, energy-saving routing methods are an important research content in the industry. [0003] Existing energy-saving routing for wireless networks is mainly divided into two categories: centralized routing methods and distributed routing methods. [0004] The centralized routing method needs to have global topology information and traffic distribution information. The path calculation process can calculate the optimal path between the source and the sink based on the above information. Each calculation can be performed in units of each packet or connection. . In the calculation proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/10H04W40/12H04W40/24
CPCY02B60/42Y02B60/50Y02D30/00Y02D30/70
Inventor 赵壮高雪王嵚王江张锦刚
Owner 江苏中科泛联物联网科技股份有限公司
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