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Topology formation and routing method applicable to wireless optical sensor network

A sensor network and wireless optical technology, applied in the field of communication, can solve the problems of unbalanced energy loss and short network survival time, and achieve the effect of balancing energy, solving the limitation of communication distance, and improving survival time

Active Publication Date: 2017-05-31
XIDIAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and propose a topology formation and routing method suitable for wireless optical sensor networks, which is used to solve the unbalanced energy loss and short network survival time in the prior art question

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  • Topology formation and routing method applicable to wireless optical sensor network
  • Topology formation and routing method applicable to wireless optical sensor network
  • Topology formation and routing method applicable to wireless optical sensor network

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:

[0032] refer to figure 1 , the present invention comprises the following steps:

[0033]Step 1: Each node in the wireless optical sensor network maintains a neighbor routing table, and uses the neighbor discovery algorithm to find its own neighbor nodes through the laser transmitter, and stores the number ID of the found neighbor nodes to its neighbors in the routing table;

[0034] Step 2: Calculate the election threshold T(n) of the cluster head node in the wireless optical sensor network:

[0035]

[0036] Among them, p is the expected percentage of the cluster head node, r is the number of rounds currently executed, and G is the set of alternative nodes;

[0037] Step 3: Each node in the wireless optical sensor network randomly generates a random number between 0 and 1, and takes the node corresponding to the random number smaller than the clu...

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Abstract

The invention provides a topology formation and routing method applicable to a wireless optical sensor network. The topology formation and routing method is used for solving technical problems of energy loss imbalance and short network lifetime in the prior art. The method includes steps: electing cluster head nodes according to random numbers generated by nodes; establishing a cluster structure through information interaction of the cluster head nodes, a base station and normal nodes; allowing the cluster head nodes to gather data of the normal nodes and transmit to the base station in single-hop or multi-hop forms; allowing the cluster head nodes to monitor remaining energy at each time slot to establish an optional node set for next-time cluster head election; realizing topology routing characteristics of the wireless optical sensor network. On the basis of an energy model, the cluster head selection optional node set is optimized, and network energy loss is balanced; by introduction of a multi-hop mechanism and a routing mechanism, the problem of limited distance between nodes and the base station is solved, network lifetime is prolonged, and the method is applicable to wireless optical communication sensor networks high in energy balance and lifetime requirements.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a topology formation and routing method of a communication network, in particular to a topology formation and routing method of an optical communication wireless sensor network based on an energy model, which can be used for energy balance and survival time. Requirements for wireless optical communication sensor networks. Background technique [0002] Free-Space Optical Communication (FSO, Free-Space Optical Communication) has the advantages of high bandwidth, no need for frequency license, anti-electromagnetic interference, high confidentiality, and low cost. A wireless optical sensor network (FSOSN, Free-Space Optical Communication Senior Network) is composed of multiple FSO nodes, and meets the requirements of multi-service transmission through FSO links. FSOSN not only inherits the advantages of FSO, but also combines the characteristics of self-organization and independ...

Claims

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Application Information

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IPC IPC(8): H04B10/116H04W40/10H04W40/24H04W40/32H04W84/18
CPCH04B10/116H04W40/10H04W40/246H04W40/32H04W84/18Y02D30/70
Inventor 常鑫宇尚韬高妍杨银堂
Owner XIDIAN UNIV
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