A method for adaptive adjustment of wireless network rate
A rate-adaptive, wireless network technology, applied in wireless communication, network traffic/resource management, modulated carrier system, etc., can solve the problems of lack of accuracy in rate adjustment, lack of channel frequency domain characteristics, etc., to remove the influence of deep fading carrier , with robustness, the effect of improving data throughput
Active Publication Date: 2017-12-22
GUANGZHOU HKUST FOK YING TUNG RES INST
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However, this method does not use the structural characteristics of the data packet for channel estimation, so it cannot select the most suitable transmission rate, and the lack of consideration of the channel frequency domain characteristics also makes its rate adjustment inaccurate
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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
[0054] see figure 1 , is a flow chart of the steps of an embodiment of the method for adaptively adjusting the wireless network rate provided by the present invention.
[0055] In this embodiment, the wireless network rate adaptive adjustment method mainly includes the following steps:
[0056] Step S1: At the transmitting end, use the transparent data of the wireless network transmission platform as a protocol signature, and evenly distribute the protocol signature as pilot information in the data packet to be sent; the pilot information includes soft pilot information and hard Pilot information. Among them, the soft pilot information refers to the data information that can be judged as reliable in the data packet during the decoding process; the hard pilot information refe...
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The invention discloses a wireless network rate adaptive adjusting method. The method includes the steps that transparent data of a wireless network transmission platform serve as protocol signatures on a transmitting terminal and the protocol signatures serve as pilot frequency information and are evenly distributed in data packages to be sent; the pilot frequency information in the received data is extracted on a receiving terminal and channel estimation calibration is conducted according to the pilot frequency information in the received data; by the adoption of the OFDM technology, optimal rates are selected for all calibrated channels in a frequency domain and fed back to the transmitting terminal. According to the wireless network rate adaptive adjusting method, under the condition that extra control information is not increased, adaptive rate adjustment is achieved, the rapid change of a time domain and the depth declination of the frequency domain of the channels are effectively confronted, noise influences are reduced, the channel estimation accuracy and the channel matching quality are greatly improved, the transmission rate is greatly increased, the more proper rates are selected from the frequency domain for transmission, and therefore the system throughput capacity is increased.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for self-adaptive adjustment of wireless network rate. Background technique [0002] With the development of wireless communication technology, the number of wireless users has increased sharply, and the requirements of wireless services for transmission rates have increased. How to improve the transmission performance of wireless networks has become a serious problem that needs to be solved urgently. [0003] In the IEEE802.11 series protocols, the physical layer (Physical Layer) uses a variety of coding and modulation techniques to achieve a variety of optional data transmission rates. For example, the 802.11a physical layer supports 8 transmission rates (6-54 Mbps), the 802.11b physical layer supports 4 transmission rates (1-11 Mbps), and the 802.11g physical layer supports 12 transmission rates (1-54 Mbps). Due to recent technological advances in wire...
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IPC IPC(8): H04W28/22
CPCH04L25/02H04L25/0202H04L27/2613H04L27/2646
Inventor 王璐戚肖克肖江伍楷舜张黔
Owner GUANGZHOU HKUST FOK YING TUNG RES INST