Multi-user dispatching method, multi-user dispatching device, information feedback device, base station and mobile station
A multi-user scheduling and information feedback technology, applied in the field of a multi-user scheduling device and multi-user scheduling method, can solve the problems of high implementation complexity and low average system traffic, and achieve high spectrum reuse coefficient, less feedback, Effects of high system traffic
Inactive Publication Date: 2012-03-21
SHANGHAI JIAOTONG UNIV +1
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[0008] The purpose of the present invention is to provide a multi-user scheduling method for random beamforming joint power allocation in view of the problem of low average system traffic or high implementation complexity in the prior art
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[0036] Hereinafter, the present invention will be described with reference to the accompanying drawings. In the following description, some specific embodiments are only for the purpose of description, and should not be construed as any limitation to the present invention, and they are just examples of the present invention. Although it may obscure the understanding of the present invention, conventional structures or configurations will be omitted.
[0037] First, the basic operating principle of the present invention will be described in detail.
[0038] Technical solution of the present invention may comprise the steps:
[0039] Step 1: Divide the OFDM subcarriers into Q segments, and for each subcarrier segment, independently create N i Orthogonal N i Dimensional beams, forming Q beam sets;
[0040] Step 2: correspondingly load each beam set to the OFDM subcarrier segment, and send it out from the antenna;
[0041] Step 3: The user monitors and detects the beam set se...
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The invention provides a multi-user dispatching method, which comprises that: a base station sections OFDM sub-carrier and separately creates Nt orthogonal wave beams for each sub-carrier section to form a wave beam set of the each sub-carrier section, wherein Nt is a natural number; aiming at the wave beam set of the each sub-carrier section, each mobile station determines a wave beam with maximum SNR, and feeds back SNR information and wave beam identification information on the wave beam to the base station; on the premise that the corresponding adapted wave beam is not occupied, the base station selects the mobile station with maximum SNR to be added into a user dispatching set in all the mobile stations performing the information feedback in turn, and adds the adapted wave beam corresponding to the mobile station into a dispatching wave beam set; and the base station detects whether the dispatched power distribution result meets the predetermined constraint conditions, and selects the dispatching use set using maximum system flow, the corresponding wave beam configuration and the power distribution result. The invention also provides a multi-user dispatching device, an information feedback device, the base station and the mobile station.
Description
technical field [0001] The present invention relates to multi-user scheduling in the field of communication technology, in particular, to a multi-user scheduling method, a multi-user scheduling device, an information feedback device, a base station and a mobile station, which are applied to random beamforming In an Orthogonal Frequency Division Multiple Access (OFDM) system, it has lower complexity and can jointly allocate power. Background technique [0002] Random beamforming technology proposes the concept of multi-user diversity from the system point of view. With this selectivity gain, higher system throughput can be achieved with less user feedback. Based on orthogonal multi-beam random beamforming, multi-user scheduling is performed. By assigning suitable users for each beam as a scheduling user set, combined with power allocation methods, and using an appropriate user scheduling method, the maximum average system traffic can be achieved. change. [0003] In some t...
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IPC IPC(8): H04B7/06H04W72/12
Inventor 戴吉祥罗汉文丁铭关韡
Owner SHANGHAI JIAOTONG UNIV