A method for multi-rate adaptive transmission in wireless local area network
A technology of adaptive transmission and wireless local area network, applied in the field of data transmission of wireless local area network
Inactive Publication Date: 2011-12-07
ZTE CORP
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[0012] The purpose of the present invention is to provide a method for wireless local area network multi-rate adaptive transmission to solve the problem that the prior art cannot optimize the rate when there are multiple services in the network The choice of wireless channels, especially the technical problems that are not suitable for wireless high-speed mobile channels
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[0041] Various preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0042] figure 1 A flowchart showing a method for transmitting data in a wireless local area network according to an embodiment of the present invention. Such as figure 1 As shown, the method for transmitting data in the wireless local area network of the present embodiment mainly includes the following steps:
[0043] In step 101, the sender sends a multi-rate adaptive transmission mode indication to the receiver.
[0044] Specifically, during a frame sequence exchange process, the initial sending frame or all sending frames sent from the sender to the receiver carry multi-rate adaptive transmission mode indication information. In the present invention, the frame sent from the sender to the receiver is called "send frame", and the frame returned from the receiver to the sender is called "return frame".
[0045] As known to those...
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The invention discloses a method for multi-rate adaptive transmission in a wireless local area network. First, the sender sends a multi-rate adaptive transmission mode indication to the receiver; then, the receiver returns the rate adjustment to the sender according to the received multi-rate adaptive transmission mode. information; then, the sender adjusts the information according to the above rate to adjust the transmission rate; finally, the sender sends the frame to the receiver at the adjusted current rate. In the multi-rate adaptive transmission method of the wireless local area network, in the data transmission process, the transmission rate can be adaptively changed according to the channel state according to the physical frame segment, and can be applied to the high-speed mobile wireless fading channel. At the same time, because the rate information ( or channel quality information), the sender can efficiently send data at a rate that the receiver can reliably receive.
Description
technical field [0001] The invention relates to a data transmission technology of a wireless local area network, in particular to a method for multi-rate adaptive transmission of a wireless local area network. Background technique [0002] Wireless local area networks are usually based on the carrier sense multiple access protocol CSMA, and its improvement methods include: channel split reservation multiple access SRMA (Split-channel Reservation Multiple Access), collision avoidance multiple access protocol MACA (Multiple Access with Collision Avoidance ), improved conflict avoidance multiple access protocol MACAW, the bottom acquisition multiple access protocol FAMA (FloorAcquisition Multiple Access) and 802.11 agreements, the wireless local area network that the present invention refers generally all is based on CSMA agreement. The main problems that need to be solved in multi-rate transmission in wireless local area network are: transmission service category, channel qual...
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IPC IPC(8): H04L29/06H04L12/56H04L1/00H04B7/005H04L12/28
Inventor 李峰王彬李杰刘巧艳
Owner ZTE CORP