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Reliable channel distribution method for task-oriented low-power-consumption wireless network

A wireless network and channel allocation technology, applied in the field of wireless communication, can solve the problem of inability to establish a channel allocation scheme, and achieve the effect of improving the transmission rate

Active Publication Date: 2018-11-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, existing techniques for multi-channel allocation often fail to establish channel allocation schemes that can meet deadline requirements

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  • Reliable channel distribution method for task-oriented low-power-consumption wireless network
  • Reliable channel distribution method for task-oriented low-power-consumption wireless network
  • Reliable channel distribution method for task-oriented low-power-consumption wireless network

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Embodiment Construction

[0028] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail with reference to the following examples. The exemplary embodiments and descriptions of the present invention are only used to explain the present invention, and are not intended to be a reference to the present invention. The limit.

[0029] This embodiment provides the channel allocation method of the present invention, which mainly includes: dividing the channel allocation plan into two levels, the first level allocates time slots with appropriate priority according to the link quality and deadline requirements, and the second level reallocates unused time slots Used for future retransmissions; in the first level, the byte-level RSSI value in the packet is used to obtain the statistical relationship between the byte error probabilities of different RSSI distances, and the link quality is calculated by the byte er...

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Abstract

The invention provides a reliable channel distribution method for the task-oriented low-power-consumption wireless network. By means of the two-stage channel distribution, in the first stage, the invention provides a mechanism considering link quality, cut-off time and a network topology structure in combination to preferentially select the most appropriate link and path. In the second stage, theretransmission probability is considered, and the time slots which are not allocated are considered is allocated to the most appropriate link to accommodate more retransmissions within a period. The retransmission time slot will only be used for a lossy link, and no extra expenditure will occur on a good link without packet loss. Compared with the prior art, the data packet transmission rate can be remarkably improved before the deadline, and extra energy consumption is avoided.

Description

Technical field [0001] The invention relates to the technical field of wireless communication, in particular to a reliable channel allocation method for a task-oriented low-power wireless network. Background technique [0002] In the communication field, multi-channel communication is widely used to improve the reliability of low-power wireless networks (LPWN). For task-oriented LPWN, data transmission usually needs to be delivered before a given deadline, making deadline-driven channel allocation an important task. However, the existing technology on multi-channel allocation often fails to establish a channel allocation plan that can meet the deadline requirements. Summary of the invention [0003] In view of the above-mentioned defects in the prior art, the present invention proposes a task-oriented, low-power-consumption wireless network reliable channel allocation method. This method also considers cut-off time requirements, link quality, the correlation of the network topol...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/54
CPCH04W72/542Y02D30/70
Inventor 赵志为闵革勇高伟峰杨轩杨明航
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA