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CoMP terminal capable of supporting double system and feedback method

A dual-mode, terminal technology, applied in coordinated multi-point transmission (CoMP) and mobile communication, can solve problems such as limiting the scope of use

Inactive Publication Date: 2014-01-01
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, terminal devices designed for CoMP transmission (hereinafter referred to as CoMP terminals) can only support a certain type of CoMP, because different CoMP methods are applicable to different scenarios, including cells, base stations, relay stations, or remote radio units, etc. , which limits the use of

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  • CoMP terminal capable of supporting double system and feedback method
  • CoMP terminal capable of supporting double system and feedback method
  • CoMP terminal capable of supporting double system and feedback method

Examples

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Embodiment Construction

[0049] The application scenarios of the embodiments of the present invention are as follows figure 1 As shown, the primary serving cell is cell0, and the channel and precoding matrix between the base station of the primary serving cell and the UE are H target and W target ; The channel between the coordinated cell cell i base station and the UE and the precoding matrix are respectively H co,i and W co,i (i=1 or 2). The codebook C has N codewords in total.

[0050] The processing flow on the network side is as follows: figure 2 shown, including the following steps:

[0051] Step 201: The eNB determines whether the UE at the edge of the cell needs to perform CoMP transmission according to the PMI, Channel Quality Indicator (CQI, Channel Quality Indicator), Reference Signal Received Power (RSRP, Reference Signal Receiving Power) and other information fed back by the UE. If yes, continue to execute step 202, otherwise perform non-CoMP transmission and end this process.

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Abstract

The invention provides a feedback method of CoMP terminal capable of supporting double system comprising following steps: A. determining the precoding matrix indicator PMItarget needed by main serving cell according to the present disturbance; B. depending on the determined PMItarget of the main serving cell, calculating the correlation of equivalent channel between the cooperating cell and main serving cell under the circumstance of the cooperating cell applying different code words, and determining the precoding matrix indicator PMI information needed by the cooperating cell according to the correlation and the CoMP type used by a base station; C. back feeding the determined code word index PMItarget and the PMI information needed by the cooperating cell to the base station. The invention also provides a method for processing CoMP base station capable of supporting double system and a CoMP terminal.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to the technical field of coordinated multi-point transmission (CoMP), in particular to a CoMP terminal supporting dual systems and a feedback method. Background technique [0002] The received signal strength of the edge user is low. If other neighboring cells of the cell where the edge user is currently located transmit signals on this frequency band at the same time, it will seriously interfere with the information transmission quality of the edge user. In order to solve this technical problem, many technologies focus on how to expand the coverage of cell signals, improve the performance of edge users, and then improve the system throughput. Coordinated Multiple Points (CoMP, Coordinated Multiple Points) is an important technology to solve this problem. CoMP has obvious advantages in improving the throughput of edge users, and will be one of the key research...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04W28/16H04W88/02
Inventor 李元柳金奕丹
Owner POTEVIO INFORMATION TECH CO LTD
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