Reliable energy-saving hierarchical routing implementation method used for wireless body area network or energy-limited small wireless sensor network

A wireless sensor network and wireless body area network technology, applied in the field of communication, can solve the problems of uneven energy consumption, low effective energy utilization rate, short network life cycle, etc., and achieve the goal of prolonging life cycle, effective utilization, and uniform consumption Effect

Active Publication Date: 2014-09-17
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The present invention aims to solve the problems of low effective utilization rate of energy, uneven consumption of energy in various parts of the network, and short network life cycle in the existing reliable and energy-saving hierarchical routing me...

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  • Reliable energy-saving hierarchical routing implementation method used for wireless body area network or energy-limited small wireless sensor network
  • Reliable energy-saving hierarchical routing implementation method used for wireless body area network or energy-limited small wireless sensor network
  • Reliable energy-saving hierarchical routing implementation method used for wireless body area network or energy-limited small wireless sensor network

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specific Embodiment approach 1

[0050] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 1. A reliable and energy-saving hierarchical routing implementation method for wireless body area networks or energy-constrained small wireless sensor networks. In wireless body area networks or energy-constrained small wireless sensor networks, it consists of the following steps accomplish:

[0051] Step 1. Initialization: Sink nodes (sink nodes) obtain the initial topology of the network and the remaining energy information of each node by means of flooding;

[0052] Each sensor node obtains the hop number information and neighbor node information required by itself from the Sink node;

[0053] After the initialization process is completed, the Sink node obtains the topology information of the entire network and the remaining energy information of each sensor node; each sensor node obtains its adjacent nodes and the distance information from the Sink node;

[0054] Step 2. Sink node with power P TX Broadcast routing ...

specific Embodiment approach 2

[0066] Specific Embodiment 2. The difference between this specific embodiment and the reliable energy-saving hierarchical routing establishment method for wireless body area networks or energy-constrained small wireless sensor networks described in specific embodiment 1 is that in step 7, cluster removal After other sensor nodes outside the head receive the broadcast information of the cluster head, they regard it as their own parent node, and the sensor node joins the cluster, and becomes the child node of the cluster head specifically as follows:

[0067] If the sensor node receives the broadcast information of 1 cluster head, then execute step 71; if the sensor node receives the broadcast information of more than 1 cluster head, then execute step 81;

[0068] Step 71, take the cluster head as its own parent node, and send a signal including its own node ID information request to join, and execute step 72;

[0069] Step 72. After receiving the request signal, the node as the...

specific Embodiment approach 3

[0074] Specific Embodiment 3. The difference between this specific embodiment and the reliable energy-saving hierarchical routing establishment method for wireless body area networks or energy-constrained small wireless sensor networks described in specific embodiment 1 is that the wireless network established in step 6 A method for maintaining reliable and energy-efficient hierarchical routing for body area networks or energy-constrained small wireless sensor networks is:

[0075] In order to avoid the excessive energy consumption of the node as the cluster head, the Sink node re-broadcasts and updates the routing information every once in a while, and each node re-competes for the cluster head. Competition; if a cluster head node has no child nodes, it still participates in the competition of the cluster head.

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Abstract

The invention provides a reliable energy-saving hierarchical routing implementation method used for a wireless body area network or an energy-limited small wireless sensor network, and relates to the field of communication. The reliable energy-saving hierarchical routing implementation method used for the wireless body area network or the energy-limited small wireless sensor network aims to solve the problems that in the prior art, the energy is low in effective utilization and uneven in energy consumption on all-part of the network, and the network is short in life cycle. According to the method, the cycle is initialized so that sensor nodes in the network can obtain corresponding adjacent node information of the sensor nodes, and the Sink node obtains the whole network information and estimates the network condition; the nodes participating in competing for the cluster heads in the competition cycle compete and become the cluster heads by the adoption of a delay window mechanism, and the nodes becoming the cluster heads meet the requirements of the channel, position, energy and the like; the other nodes select appropriate cluster heads to guarantee that each node has the cluster head corresponding to the node in the cluster forming cycle, and no overlapping exists in the clusters; the cluster routing builds reliable routing transmission through an asteroid topological structure.

Description

technical field [0001] The invention relates to the communication field, in particular to a routing realization method. Background technique [0002] Wireless Body Area Network (WBAN) is a new type of Wireless Sensor Network (WSN), which refers to a network composed of wireless sensors distributed on the surface or body of a person, which can be used to detect human health or track the state of motion of the human body. WBAN has important applications in medical treatment, entertainment, military affairs and daily life. WBAN is often used in the medical field to monitor the physical indicators of the elderly. Wearable sensors are used to collect EEG, ECG and other indicators and transmit them to the Sink node. The Sink node then performs preliminary processing on the data and then serves as a gateway to transmit the data through the Internet or cellular network. To the medical center, the professionals of the medical center can monitor the patient's daily physical index sta...

Claims

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Application Information

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IPC IPC(8): H04W40/10
CPCY02B60/50Y02D30/70
Inventor 李卓明毛圣歌沙学军叶亮白旭佟兴
Owner HARBIN INST OF TECH
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