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Transmission control frame method based on dynamic power adjustment

A transmission control and dynamic power technology, applied in transmission control/equalization, advanced technology, data exchange through path configuration, etc., can solve problems affecting the overall performance of the network, etc. The effect of reducing the interference range

Inactive Publication Date: 2008-08-13
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The contradiction between different interference distances and the same transmission distance limits the performance of the current RTS / CTS mechanism, and will seriously affect the overall performance of the network in a slightly dense network

Method used

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  • Transmission control frame method based on dynamic power adjustment
  • Transmission control frame method based on dynamic power adjustment
  • Transmission control frame method based on dynamic power adjustment

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Embodiment Construction

[0022] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0023] Such as figure 1 As shown, this embodiment includes the following steps: each node in the ad hoc network detects other nodes around, and when initializing, by receiving power P r , the maximum transmission power P t And the free space propagation model obtains the communication distance D between the node and other surrounding nodes t , establish a transmission power table for communicating with surrounding nodes, this table consists of the destination address, and the communication distance D to the destination address t , consisting of transmit power, the ...

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Abstract

The invention relates to a transmission control frame method based on dynamic power adjustment which is in the field of wireless local area network transmission technology, wireless self-organized network communication nodes detects around other nodes, and obtains transmission distance communicated with around nodes, a transmitting power table is established communicated with around nodes; then, communications nodes receives around other nodes control frame, and obtains the optimal transmitting power communicated with other nodes through the optimal power formula, transmitting power in the node transmitting power table is updated by the optimal transmitting power; again, when communication nodes sending frame to around nodes, the first judges frame, if the frame is the RTS / CTS control frame, thus the node finds the optimal transmitting power from self-transmitting power table, and sends control the frame; if the frame is data frame, thus sending in accordance with the largest transmission power. The invention improves integral network communication space reuse degree, and increases network integral throughput greatly.

Description

technical field [0001] The invention relates to a method in the technical field of wireless local area network transmission, in particular to a method for transmitting control frames based on dynamic power adjustment. Background technique [0002] The wireless local area network based on the IEEE (Institute of Electronics and Electrical Engineers) 802.11 series protocol has flexible and fast networking characteristics and can provide services that cannot be provided by wired networks such as "roaming", making it widely used in modern social life. . The MAC (Access Control Layer) in the IEEE802.11 series protocol coordinates the sending and receiving status of surrounding nodes through fixed power transmission control frames (RTS / CTS: request to send / permit to send), in the real wireless local area network environment , due to the uncertainty of the communication node distance, the interference distance changes. The contradiction between different interference distances and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04L12/28
CPCY02D30/70
Inventor 陈伟喜戎蒙恬刘涛吉诚刘超
Owner SHANGHAI JIAO TONG UNIV
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