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Scheduling method based on CQI (channel quality indicator) feedback parameter and SINR (signal to interference plus noise ratio) numerical grouping

A scheduling method and a technology for feedback parameters, which are applied in the direction of error prevention/detection, electrical components, and wireless communication using the return channel, which can solve the problem that the throughput and fairness of the cell are not easily compromised, so as to improve the throughput and improve the fairness. , the effect of reducing signaling overhead

Inactive Publication Date: 2013-04-03
XI AN JIAOTONG UNIV
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Problems solved by technology

[0019] The problem solved by the present invention is to provide a scheduling method based on CQI feedback parameters and SINR numerical grouping, which overcomes the difficult compromise between cell throughput and fairness, and improves the throughput of the cell and the relationship between users to a certain extent. fairness

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  • Scheduling method based on CQI (channel quality indicator) feedback parameter and SINR (signal to interference plus noise ratio) numerical grouping
  • Scheduling method based on CQI (channel quality indicator) feedback parameter and SINR (signal to interference plus noise ratio) numerical grouping
  • Scheduling method based on CQI (channel quality indicator) feedback parameter and SINR (signal to interference plus noise ratio) numerical grouping

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Embodiment Construction

[0057] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0058] A scheduling method based on CQI feedback parameters and SINR value grouping, comprising the following steps:

[0059] 1) The base station calculates the SINR values ​​of all users in the cell;

[0060] 2) Set the SINR threshold, divide the users greater than or equal to the SINR threshold into the cell center user group I, and divide the users smaller than the SINR threshold into the cell edge user group II, and allocate the total number of resource blocks in the cell to the cell center user group Ⅰ and cell edge user group II are used for scheduling;

[0061] 3) Within a time window, the base station allocates corresponding resource blocks to the users in each group in turn according to the CQI mechanism, and uses the PF scheduling method and the RR scheduling method to schedule the...

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Abstract

The invention discloses a scheduling method based on CQI (channel quality indicator) feedback parameter and SINR (signal to interference plus noise ratio) numerical grouping. The scheduling method includes: a base station calculating SINR numbers of all users in a cell; setting an SINR threshold value, distinguishing users not smaller than the SINR threshold value as a cell central user group I, dividing users smaller than the SINR threshold value as a cell edge user group II, and distributing a total resource block in the cell to the cell central user group I and the cell edge user group II for scheduling; and within a time window, sequentially distributing corresponding resource blocks to the users in each group according to a CQI system by the base station, and respectively scheduling the cell central user group I and the cell edge user group II by a PF (proportional fair) scheduling method and an RR (round robin) scheduling method. By constructing an LTE (long term evolution) system simulation model, the method and the PF method are subjected to simulation comparison, and according to the simulation result, throughput of the cell and fairness among the users are increased to a certain extent by the method compared with the PF method.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a grouping scheduling method based on CQI feedback parameters and SINR values. Background technique [0002] The scheduling algorithm based on the LTE system is a core technology in its Radio Resource Management (RRM) technology, which determines the performance of the entire system. The scheduling algorithm mainly solves how to provide resource allocation and multiplexing on the basis of packet data transmission when multiple users compete for resources, and how to determine a service order. Scheduling is mainly based on channel conditions, while considering the amount of data waiting to be sent and the priority of services, etc., and making full use of Adaptive Modulation and Coding (AMC), Hybrid Automatic Repeat reQuest (Hybrid Automatic Repeat reQuest, HARQ) and the role of the CQI feedback parameter mechanism. The scheduling algorithm should allo...

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Application Information

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IPC IPC(8): H04W72/12H04L1/16
Inventor 张晓峰乔瑞萍胡宇平俞璐王效鹏雷江
Owner XI AN JIAOTONG UNIV
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