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Automatic single-data multi-confirmation send-and-wait repeat-request method of wireless sensor network

A wireless sensor, automatic retransmission technology, applied in the field of automatic retransmission on stop, can solve the problems of short network life and uneven energy consumption of nodes

Inactive Publication Date: 2014-08-06
CENT SOUTH UNIV
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  • Abstract
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Problems solved by technology

[0008] The present invention provides a single data multi-confirmation automatic retransmission method of a wireless sensor network. Its purpose is to overcome the problems of uneven energy consumption of nodes and short Energy utilization, thereby extending the overall life of the wireless sensor network and ensuring the reliability of data transmission

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  • Automatic single-data multi-confirmation send-and-wait repeat-request method of wireless sensor network
  • Automatic single-data multi-confirmation send-and-wait repeat-request method of wireless sensor network
  • Automatic single-data multi-confirmation send-and-wait repeat-request method of wireless sensor network

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] A single-data, multiple-confirmation, etc.-stop automatic retransmission method for a wireless sensor network. All sensor nodes in a wireless sensor network are deployed in a circular area, the base station node is located in the center of the circular area, and the distribution of all sensor nodes conforms to a node density of ρ The homogeneous Poisson distribution of , the sensor nodes in the wireless sensor network use the hop-by-hop method to transmit and confirm the data packet. For the sender node that is h hops away from the Sink, the reliability of the data packet sent to the Sink is not less than δ, Set the maximum number of retransmissions of the data packet sent by the sender node to X h (δ), including the following steps:

[0040] Step 1: Any sender node sends the next hop node n as the receiver i To send data packets, when each dat...

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Abstract

The invention discloses an automatic single-data multi-confirmation send-and-wait repeat-request method of a wireless sensor network. Aiming at the energy consumption of a sensor node, a mechanism that a data packet is received and subsequently a plurality of ACK (Acknowledgement Character) confirmation packets are fed back to ensure the reliability of network transmission is adopted, although the number of the ACK confirmation packets transmitted by a receiving party is increased, the times that data packets consume great energy when being retransmitted as an ACK is lost and the data packets are successfully transmitted for a transmitting node are reduced, so that the energy consumption of the node is reduced wholly, and the service life of a network is prolonged.

Description

technical field [0001] The invention relates to a single-data multiple-confirmation wait-stop automatic retransmission method for a wireless sensor network. Background technique [0002] A wireless sensor network is a wireless network composed of a large number of sensor nodes that communicate with each other through multi-hop wireless links and in a self-organizing and multi-hop manner, and wireless sensors are often powered by batteries as their energy source, so How to rationally utilize and allocate energy consumption is very important. [0003] Send-and-Wait Automatic Repeat-reQuest (SW-ARQ) is a network retransmission protocol proposed to overcome the bit error rate of the network, but the existing SW-ARQ is Proposed for wired networks with very low error rates. In the wired network, the bit error rate of transmitted data is lower than 10 -6 , and the reliability of data transmission is extremely high. However, a completely different situation exists in wireless se...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/16H04W28/08
CPCY02B60/50Y02D30/70
Inventor 刘安丰高超刘语欣贺晟刘潇
Owner CENT SOUTH UNIV
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