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Scheduling method of coordinated multi-point (CoMP)

A multi-point transmission and cooperative cluster technology, applied in the transmission system, electrical components, wireless communication, etc., can solve the problems of poor matrix and large amount of information, and achieve the effect of improving system performance and reducing the amount of feedback information

Inactive Publication Date: 2014-05-21
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The CS / CB method of feeding back explicit channel information can maximize the sharing of channel information between cells in a CoMP coordination cluster, thereby achieving a significant performance improvement, but its obvious disadvantage is that it needs to feed back the channel matrix or channel coordination. Variance matrix, etc. Obviously, the amount of information that needs to be fed back is too large, and the feedback mechanism of the existing LTE and the capacity of the X2 interface will be greatly modified.

Method used

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Examples

Experimental program
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Embodiment 1

[0015] In the first embodiment, it is assumed that the CoMP coordination clusters in the system are fixed. Each CoMP cooperating cluster includes a primary serving cell and at least one coordinating cell. In this embodiment, when the system uses each unit scheduling resource to schedule the users of each cell in the CoMP coordination cluster, the following methods are mainly used:

[0016] Step 101 , when allocating the current unit scheduling resource, each cell in the CoMP cooperating cluster selects a user from its respective list of users to be scheduled as the user currently scheduled by the cell.

[0017] In this step, each cell can use an existing scheduling method, such as a proportional fair scheduling method, to select the currently scheduled user of the cell from the list of users to be scheduled in the cell, and the specific selection method is grasped by those skilled in the art. I won't repeat them here.

[0018] Step 102: When the user selected by the primary ...

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Abstract

The invention provides a scheduling method of coordinated multi-point (CoMP). In the method, for possible interference, a mode which makes a coordinated cell reselect a current scheduling user is used so that the interference between the coordinated cell and a main service cell user can be effectively avoided. System performance can be effectively improved. Simultaneously, only when the user scheduled by the main service cell is the edge user, does the main service cell send user feedback PMI_C information to the coordinated cell so that the coordinated cell can reselect the scheduling user which generates the minimum interference. Therefore, a system feedback information quantity during the CoMP can be effectively reduced.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a coordinated multi-point transmission (Coordinated Multi-point, CoMP) scheduling method. Background technique [0002] At present, in order to improve the performance of cell edge users and meet the standardized technical requirements of LTE-Advanced (hereinafter referred to as LTE-A), LTE-A introduces a CoMP transmission technology. Since CoMP technology can share channel or data information among multiple cells, and optimize the overall performance of multiple cells based on these information, compared with the traditional LTE system determined on the basis of a single cell, it can effectively Improve performance for edge users. [0003] According to whether the cells participating in CoMP cooperation need to share data information, CoMP can be divided into joint transmission (Joint Processing JP) and coordinated scheduling / beamforming (Coordinated Scheduling / Beamfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/02H04W72/04H04W72/12
Inventor 齐宝春郑辰翟长昊
Owner POTEVIO INFORMATION TECH CO LTD
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