Downlink channel according-to-requirement method for aiming at single-carrier base station system

A base station system, on-demand allocation technology, applied in wireless communication, electrical components, etc., can solve the problem of inability to efficiently support multi-user different service rate requirements, and achieve good downlink throughput.

Active Publication Date: 2014-09-03
GUANGZHOU HAIGE COMM GRP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Some traditional wireless resource scheduling algorithms, such as various forms of proportional fairness algorithms, start from the compromise between allocation efficiency and fairness, and can only achieve the convergence of different user rates, but cannot efficiently support different service rates of multiple users on demand

Method used

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  • Downlink channel according-to-requirement method for aiming at single-carrier base station system
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  • Downlink channel according-to-requirement method for aiming at single-carrier base station system

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Embodiment 1

[0060] The method for allocating downlink channels on demand in this embodiment specifically includes the following steps:

[0061] 1) Let the bandwidth of the single-carrier base station system be BHz, and the signal transmission power be P max , the channel state information (CSI) of the user can be obtained in real time, and the number is N=2 k ); the base station system is the basic scheduling block of T at each time (such as figure 1 As shown, only one user’s data is transmitted, including X=T / B modulation symbols) using adaptive modulation and coding technology, and applying different modulation and coding schemes (MCS, a total of N schemes, rate followed by r 1 , r 2 ,...,r N-1 , r N bits) for maximum transmission efficiency;

[0062] Assuming that within a certain period of time, the base station needs to support the downlink service requirements of K users who are evenly distributed in the cell and are in a static or low-speed mobile state, such as figure 2 As...

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Abstract

The invention discloses a downlink channel according-to-requirement method for aiming at a single-carrier base station system. The downlink channel according-to-requirement method comprises the steps of: acquiring prior information, controlling business, sequencing user priority, and making channel distribution strategy. The downlink channel according-to-requirement distribution method can lead the base station realize a fact that downlink throughput approaches downlink capacity. Not only are business requirements of many users supported, but also different service quality insurances are supplied for different businesses of multiple users. Quantitative according-to-requirement reasonable distribution is realized in a certain extent. While the downlink throughput of the base station is maximized, service quality requirements for different businesses of different users can be better supported. The downlink channel according-to-requirement distribution method has higher value in theory and practical application.

Description

technical field [0001] The invention relates to a method for allocating downlink channels, in particular to a method for allocating downlink channels on demand for a single-carrier base station system. It belongs to the technical field of wireless digital communication. Background technique [0002] Link adaptive transmission technology is to adaptively change parameters such as modulation mode, coding rate and power allocation according to channel changes, and maximize the use of wireless link resources when transmission error performance is allowed. At present, the 3G, 4G and WIMAX base station systems for civilian use have all formulated detailed standards for this technology. In this case, the supporting wireless resource management technology can improve the resource utilization rate of the base station system and meet the different service quality requirements of various businesses. very important. Based on the obtained user channel state information, the base statio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
Inventor 谢映海刘勇
Owner GUANGZHOU HAIGE COMM GRP INC
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