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A wireless communication method based on TDMA and CSMA/CA

A wireless communication and step-by-step technology, applied in the field of communication, can solve the problems of low signal utilization and poor adaptability

Active Publication Date: 2019-06-07
王成
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of wireless communication method based on TDMA and CSMA / CA, based on the wireless communication mode of time division multiple access and CSMA / CA (carrier sense multiple access / collision avoidance) technology, solved existing power line carrier communication The problem of poor adaptability and low signal utilization of the channel allocation method combines the advantages of TDMA (Time Division Multiple Access) and CSMA / CA (Carrier Sense Multiple Access / Collision Avoidance), so that each device performs data processing based on a fixed time slot Sending and receiving interaction, while using CSMA / CA technology for sending channel detection can ensure that the channel is clean and unoccupied, which greatly improves the stability of the wireless network

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  • A wireless communication method based on TDMA and CSMA/CA
  • A wireless communication method based on TDMA and CSMA/CA

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution, and provides detailed implementation and specific operation process, but the protection scope of the present invention is not limited to the present invention. Example.

[0023] figure 1 It is a logic diagram of a wireless communication method based on TDMA and CSMA / CA according to an embodiment of the present invention, figure 2 It is a data transmission logic diagram of a wireless communication method based on TDMA and CSMA / CA according to an embodiment of the present invention, such as figure 1 with figure 2 Shown, the present invention comprises the following steps:

[0024] S1. CSMA enters the network, and initializes the number of backoffs NB, the length of the contention window CW, the backoff index BE and the idle signal evaluation value CCA;

[0025] The initial value of the backof...

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Abstract

The invention discloses a wireless communication method based on TDMA and CSMA / CA. The method is based on a wireless communication mode of time division multiple access and CSMA / CA (Carrier MonitoringMultipath Access / Conflict Avoidance) technology. The problems that an existing power line carrier communication channel distribution method is poor in adaptability and low in signal utilization rateare solved. the advantages of TDMA (Time Division Multiple Access) and CSMA / CA (Carrier Sensing Multi-Access / Conflict Avoidance) are combined; Therefore, each device performs data transceiving interaction based on the fixed time slot, and meanwhile, the CSMA / CA technology is used for transmitting channel detection, so that the channel is clean and free of occupation, and the stability of the wireless network is greatly improved.

Description

technical field [0001] The invention relates to a communication technology, in particular to a wireless communication method based on TDMA and CSMA / CA. Background technique [0002] At present, most low-power LAN wireless communications are P2P direct transmission modes. Since P2P network transmission does not have a conflict avoidance mechanism, if there are more than two terminals sending wireless point signals at the same time, the signals will collide and cause communication failure. Automatic networking cannot be solved. Power consumption The communication time between the terminal device and the gateway device is uncertain and the channel resource occupation is chaotic; at the same time, the terminal device only processes the uploaded data and the gateway device only receives the information without any beacon notifying the terminal that the terminal has finished receiving, that is, the terminal has finished sending The data immediately goes to sleep regardless of whet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W74/08H04B3/54
Inventor 张岩
Owner 王成