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Relay wireless sensor network routing method based on energy balance and distance cooperation

A wireless sensor and cooperative relay technology, applied in network topology, wireless communication, energy-saving ICT, etc., can solve the problems of cluster head node death, increase cluster head energy consumption, etc., and achieve the effect of stable data transmission

Inactive Publication Date: 2009-07-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The routing method introduced in this document is especially suitable for large-scale wireless sensor networks, but it also has the following disadvantages: the cluster head is responsible for the two tasks of data fusion and data forwarding at the same time, which greatly increases the energy consumption of the cluster head, which will inevitably lead to cluster The head node died due to excessive energy consumption

Method used

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  • Relay wireless sensor network routing method based on energy balance and distance cooperation
  • Relay wireless sensor network routing method based on energy balance and distance cooperation
  • Relay wireless sensor network routing method based on energy balance and distance cooperation

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Embodiment 1

[0078] The embodiment of the sensor network routing method of the present invention is as follows figure 1 , 4 , 5, 6, and 7, the steps are as follows:

[0079] 1. Randomly deploy sensor nodes in a fixed monitoring area to complete the deployment of the wireless sensor monitoring network;

[0080] 2. Network initialization, the base station broadcasts to the entire sensor node with a certain power, and each node calculates and saves the approximate distance from the node to the base station according to the strength of the broadcast signal received from the base station;

[0081] 3. Select and determine the first round of cluster heads, and select cluster heads from the sensor monitoring network in a random manner;

[0082] During the election, the node generates a random number between (0, 1). If the random number is smaller than T(n), it will be elected as the cluster head, and it will issue an announcement message that it is the cluster head. In each cycle, if the node...

Embodiment 2

[0109] The present invention is used for the embodiment of the sensor node of above-mentioned method figure 2 As shown, the sensor node is provided with a microprocessor 1, and the microprocessor 1 is connected to the Zigbee radio frequency communication module 6, the memory 2, the GPS positioning module 7, the power module 5, and the sensor acquisition module 4 respectively through the bus and data lines.

[0110] Described microprocessor 1 adopts 8 low-power single-chip microcomputers ATmega128L, has 6 kinds of different low-power consumption modes (except normal mode of operation), completes all calculation processing work; Described Zigbee radio frequency communication module 6 MC13192 is adopted; the GPS positioning module 7 adopts TIM-LH, which can accurately locate in a weak signal environment;

[0111] The sensors in the sensor acquisition module 4 are temperature, humidity and pressure sensors.

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Abstract

A wireless sensor network routing method based on energy equalization and distance cooperation relates to data fusion and routing technique of wireless sensor network, and is typically used for clustering routing technique. According to a given regulation, the sensor nodes in the wireless sensor network are divided to cluster head node, relay node and cluster member node. The energy consumption of whole wireless sensor network is fully equalized and the effective usage factor of energy is increased. An energy threshold LT is introduced for realizing the smooth transition of roles between nodes, saving the cluster generation time and reducing the energy consumption. Single-hop communication is adopted in the cluster. Direct sequence spread spectrum is applied. Each cluster uses a unique cluster spreading code. All nodes in the cluster use the unique cluster spreading code for transmitting data to the cluster head and the inter-cluster interference is effectively reduced. The method of the invention can obtain purpose of prolonging the survival time of network under the precondition that the information data is reliably, effectively and accurately transmitted to the base station.

Description

Technical field: [0001] The invention relates to the fields of wireless sensor network data fusion and network protocols, in particular to a wireless sensor network routing method based on energy balance and distance cooperative relay, which belongs to the wireless sensor network routing technology. Background technique: [0002] As a new way of information acquisition, WSNs (Wireless Sensor Networks) has become a research hotspot at home and abroad. WSNs are composed of a large number of micro sensor nodes deployed in the monitoring area, and form a multi-hop self-organizing network system through wireless communication. and sent to end users. WSNs do not require fixed network support, have the characteristics of rapid development and strong invulnerability, and can be widely used in medical monitoring, environmental monitoring, industrial monitoring, urban traffic management, warehouse management, military reconnaissance, agricultural breeding, smart home and space ocean ...

Claims

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Application Information

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IPC IPC(8): H04W40/02H04W40/08H04W40/10H04W84/18
CPCY02B60/50
Inventor 邢建平黄少艳王德华陈岗刘畅
Owner SHANDONG UNIV
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