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Network concurrent competition channel and arbitration method based on power distribution

A technology of competition channel and arbitration method, which is applied in the field of network concurrent competition channel and arbitration based on power allocation, which can solve the problems of increased data transmission delay, increased probability of collision, and decreased competition success rate, so as to reduce data transmission delay , reduce overhead, improve channel utilization and network throughput

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

However, in the case of a large amount of data burst, there are too many nodes participating in the competition, and the probability of conflict increases, especially when the sensor nodes work in the duty cycle mode, the competition is further intensified, resulting in a decrease in the success rate of the competition and a delay in data transmission. increase

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  • Network concurrent competition channel and arbitration method based on power distribution
  • Network concurrent competition channel and arbitration method based on power distribution
  • Network concurrent competition channel and arbitration method based on power distribution

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Embodiment Construction

[0033] The present invention is applied to a wireless sensor network. In order to save energy, the sensor nodes usually adopt a duty ratio working mode, that is, the nodes work and sleep periodically according to a certain scheduling strategy. The node will turn off the wireless transceiver module in the dormant state, so data transmission can only be carried out in the working state. The node will switch to the working state under two circumstances. One is that according to the scheduling policy, the dormant time is over. At this time, the node enters the working state as the receiver and is ready to receive the data of the potential sender in the network; the other is that the node has data It needs to be sent. At this time, the identity of the sender is switched to the working state, and the data is ready to be sent to the destination node.

[0034] refer to image 3 and Figure 10 , the implementation steps of the present invention are as follows:

[0035] Step 1. Each ...

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Abstract

The invention discloses a network concurrent competition channel and arbitration method based on power distribution. The network concurrent competition channel and arbitration method comprises implementation steps as follows: a neighbor node information table is established when each node in a network is started; each node distributes power of a concurrent competition channel for a neighbor node with a recursion method, the neighbor node information table is input and a distribution result set is output in the method, and one that accommodates the most nodes in the result set is selected as a final distribution result; when nodes send data, channel competition is performed according to the power distributed to the nodes by target nodes; a receiving party decodes a signal of a competition party according to a capturing effect and assigns the nodes allowed to send data and transmission time length. By using the capturing effect and the power distribution, the number of nodes participating in concurrent transmission is adjusted, the capture success rate is increased, and the utilization rate and the network throughput of channels are increased.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a network concurrent contention channel and an arbitration method based on power distribution. Background technique [0002] The wireless sensor network is composed of a large number of cheap micro-sensor nodes deployed in the target area. It is a multi-hop self-organizing network formed by wireless communication. It is mainly used in the monitoring of the target area. In practical applications, the sensor nodes aggregate the collected information to the data center, thus, a large number of data bursts may occur, causing multiple nodes to compete to transmit data to the same node. The traditional channel competition adopts the CSMA mechanism, that is, each node must first perform carrier sense before sending a data frame, and only when the medium is idle, the frame is allowed to be sent, otherwise, backoff is performed. However, in the case of a large amount of da...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04W72/04
CPCH04W72/0473H04W74/0866
Inventor 沈中李静晓周丽芝
Owner XIDIAN UNIV
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