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Relay Node Placement Strategy Method with Time-To-Live Guarantee in Segmented Networks

A relay node and lifetime technology, applied in network topology, connection management, advanced technology, etc., can solve the problems of multiple deployment nodes, low energy energy efficiency, etc., and achieve the effect of high energy efficiency

Inactive Publication Date: 2018-08-31
SHANGHAI JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] To sum up, most of the current existing network connection algorithms cannot be directly applied to WSNs with time-to-live requirements, because the number of nodes they require is very large, and they need to be repeated Deploy nodes multiple times
And because all placed nodes use the maximum transmission power to transmit data and the superlinear fading characteristics of the wireless transmission environment, the energy efficiency of the network energy may be very low

Method used

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  • Relay Node Placement Strategy Method with Time-To-Live Guarantee in Segmented Networks
  • Relay Node Placement Strategy Method with Time-To-Live Guarantee in Segmented Networks
  • Relay Node Placement Strategy Method with Time-To-Live Guarantee in Segmented Networks

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Embodiment Construction

[0045] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be pointed out that for those of ordinary skill in the art, a number of modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0046] The present invention decomposes the problem into the following sub-problems for solution: node transmission power optimization, one-hop transmission distance optimization, and a relay node placement strategy with guaranteed survival time. among them:

[0047] In the node's transmission power optimization stage, the wireless transmission environment is assumed to be Rayleigh fading, the noise in the environment is additive white Gaussian noise, and the condition that ...

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Abstract

The invention provides a relay node placement strategy method with life time guarantee in a segmented network. The method comprises the following steps: determining optimal transmission power; determining an optimal one-hop transmission distance; determining a relay node placement scheme according to the optimal one-hop transmission distance; adjusting a transmission path; adjusting initial energy of nodes. According to the method, the optimal one-hop transmission distance and the corresponding optimal transmission power are calculated first, so that the expected value of total energy consumption in the whole multi-hop transmission process is minimized, the number of required relay nodes can be reduced on the premise of meeting the life time requirements of the network, and the energy consumption of the network can be reduced.

Description

Technical field [0001] The invention relates to a method in the technical field of wireless sensor networks, in particular to a relay node placement strategy method with lifetime guarantee in a segmented network. Background technique [0002] Since most of the wireless sensor networks work in a relatively harsh environment, the sensor nodes we place in advance may encounter a lot of unpredictable damage; on the other hand, because the sensor nodes are generally randomly placed, there may be some range The condition of no sensor node. The above two conditions will cause the network to be segmented. Sensor nodes in the same network segment are connected to each other, but sensor nodes in different network segments cannot communicate directly. In this case, only the data sensed by sensor nodes in the network segment where the sink node is located can be transmitted to the sink node, while data sensed by sensor nodes in other network segments cannot be transmitted to the sink node. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/00H04W52/02H04W76/10H04W84/18
CPCY02D30/70
Inventor 许诗林蒋铃鸽袭奇何晨田军
Owner SHANGHAI JIAOTONG UNIV
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