User classification method for relay auxiliary data transmission of wireless communication

An auxiliary data transmission and wireless communication technology, applied in wireless communication, communication between multiple stations, electrical components, etc., can solve the problems of system performance loss, unsuitable for data transmission, etc., and achieve the effect of speed improvement

Active Publication Date: 2010-11-03
EASYWAY
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AI Technical Summary

Problems solved by technology

Due to the large-scale fading in the wireless channel, the user's through link or relay link may be unsuitable for data transmission due to large-scale fa

Method used

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  • User classification method for relay auxiliary data transmission of wireless communication
  • User classification method for relay auxiliary data transmission of wireless communication
  • User classification method for relay auxiliary data transmission of wireless communication

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Embodiment Construction

[0015] Introduce the inventive method in detail below in conjunction with accompanying drawing and specific embodiment:

[0016] as attached figure 1 As shown, the system consists of a multi-antenna base station, multi-antenna relay station and multiple single-antenna users. The relay station here is half-duplex, that is, the relay station cannot receive data and send data at the same time. The number of base station antennas, the number of relay station antennas and the number of users are equal. In the embodiment, the number of base station antennas, the number of relay station antennas and the number of users are all equal to four. Users are evenly distributed in a fan-shaped area with a vertex angle of 120°, the base station is located at the apex of the fan-shaped area, and the relay station is located at the midpoint of the bisector of the fan-shaped area's apex angle. The fan-shaped area has a radius of 1 km. It is assumed that the base station and the relay station t...

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Abstract

The invention relates to a user classification method for the relay auxiliary data transmission of the wireless communication, which belongs to the wireless data transmission technology field. One of the technical proposals of the method is that: a Kth user is arranged in the communication system, the large scale of the straight link is declined to Mu0k when the data is received, the large scale between a base station and a relay is declined to Mu1, the large scale between the relay and the users is declined to Mu2k, wherein, the Mu0k can be taken as the measurement of the straight link, the harmonic mean 2Mu1* Mu2k/(Mu1+ Mu2k) of the Mu1 and the Mu2k can be taken as the measurement of the relay link, if the Mu0k is bigger than or equals to the 2Mu1* Mu2k/(Mu1+ Mu2k), the kth user can be placed into the straight user congregation, if the Mu0k is smaller than the 2Mu1* Mu2k/(Mu1+ Mu2k), the k user can be placed into the relay user congregation, and above operation is executed to all users in the ergodic communication system, so as to obtain the straight user congregation and the relay user congregation. The method can effectively alleviate the effects to the communication system performance due to the signal channel lager scale decline, so as to enable the speed of the system to be improved.

Description

technical field [0001] The invention relates to a user classification method for relay auxiliary data transmission of wireless communication, and belongs to the technical field of wireless data transmission. Background technique [0002] Path loss and shadow fading exist in the wireless environment, which will seriously attenuate the signal strength and affect the performance of the system. The use of relay stations can effectively combat large-scale fading in wireless channels and expand the coverage of base stations. Especially in areas where shadow fading is severe, the use of relay stations can provide reliable signal transmission for users in these areas. On the other hand, MIMO can greatly improve the spectrum utilization rate of the communication system and reduce the bit error rate of data transmission by placing multiple antennas at the transmitting end and receiving end, and various spatial signal processing technologies. In a cellular network, if multiple antenn...

Claims

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Application Information

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IPC IPC(8): H04W88/08H04B7/26
Inventor 陈翔王天恒孙引周世东李云洲
Owner EASYWAY
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