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A Routing Method for Intermittently Connected Wireless Sensor Networks

A wireless sensor, intermittent technology, applied in the direction of network topology, wireless communication, data exchange network, etc., can solve the problems of inappropriate use, node energy exhaustion, a large amount of communication and computing overhead, etc., to achieve balanced energy consumption and data forwarding rate. and the effect of transmission delay balance

Active Publication Date: 2017-03-15
NORTHWEST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the allocation of node work scheduling requires a lot of communication and computing overhead, resulting in a lot of energy overhead
In addition, when RMS selects the forwarding set, it does not consider the energy factor of the sensor nodes. It simply uses the link quality as a reference to select the forwarding set, which will easily lead to the energy depletion of some nodes due to frequent use, which greatly reduces the network lifetime.
These factors make RMS unsuitable for monitoring with a long network lifetime, such as deformation monitoring of field earthen sites

Method used

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  • A Routing Method for Intermittently Connected Wireless Sensor Networks
  • A Routing Method for Intermittently Connected Wireless Sensor Networks
  • A Routing Method for Intermittently Connected Wireless Sensor Networks

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Embodiment Construction

[0050] The EBRP protocol of the present invention is applied to the following network model: except the sink node, all sensor nodes are isomorphic, and the initial energy E initial Equal, is a unitless constant; the network has local time synchronization; use a communication graph G=(V, E, P, W) to represent a multi-hop wireless sensor network, V represents a node set, and E represents a link set , when node j is within the communication range of node i, a link (i, j) from node i to j is formed; P represents the set of link quality of all links, and the chain of link (i, j) The road quality is denoted as p i,j , the link quality between all sensor nodes in the network has been determined, and W represents the work scheduling set of all sensor nodes.

[0051] Such as figure 1 As shown, the EBRP protocol of the present invention includes an initialization phase S1 and an operation phase S2. When the protocol is running, the initialization phase S1 is first executed. In order ...

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Abstract

The invention discloses a routing protocol for intermittently connecting wireless sensor networks, which includes an initialization phase S1 and a running phase S2; determining the number of layers of all sensor nodes in the network; and determining the next hop neighbors of all sensor nodes. table; determine the forwarding set: Sort the nodes in the next-hop neighbor table of each sensor node in descending order according to the SLQE metric forming the link with the current node, and take the top k nodes to form the forwarding set of the current node; for the sensor The forwarding set of each node in the network is sorted to generate a sorted forwarding set; each node in the network forwards the data packet to the next hop node according to the sorted forwarding set until the data packet is sent to the sink node. The invention solves the real-time and reliability problems of data collection caused by unreliable and unstable wireless links. This allows data collection to be balanced in terms of network lifetime, data forwarding rate and transmission delay.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to a routing protocol for intermittently connecting wireless sensor networks. This protocol is suitable for a class of applications that require a long network lifetime and certain reliability and real-time data collection. Background technique [0002] Data collection is a basic function that all wireless sensor network applications must have. For example, in the application of field deformation monitoring of earthen ruins, it is necessary to collect information such as temperature, humidity, luminosity, and salinity of earthen ruins, and then analyze the risk of earthen ruins. evaluate and take appropriate protective measures. How to aggregate these data to the sink node (base station) through multi-hop routing, so that the data collection meets certain reliability and real-time performance, and at the same time ensure that the network has a long life span has become a pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721H04L1/18H04W84/18
Inventor 房鼎益韩雨涝陈晓江刘晨尹小燕王薇
Owner NORTHWEST UNIV
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