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Radio communication system and method

A communication method and technology of radio stations, applied in wireless communication, diversity/multi-antenna system, transmission system, etc., can solve the problem of CQI useless power consumption feedback overhead, etc., to avoid unnecessary calculation, reduce feedback overhead, and avoid power consumption Effect

Active Publication Date: 2016-11-16
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wrong CQI calculation and feedback may generate useless power consumption and unnecessary feedback overhead

Method used

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  • Radio communication system and method
  • Radio communication system and method
  • Radio communication system and method

Examples

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Embodiment Construction

[0051] Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. The examples used to describe the principles of the invention are by way of illustration only and should not be construed in any way as limiting the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably configured wireless network. In the following, reference will be made to image 3 To describe the principle of the present invention.

[0052] exist image 3 In , it is assumed that the network 10 includes cell 1, cell 2 and cell 3 managed by the CCU through backhaul links BL1-BL3 respectively; UE 20 is served by cell 1; and the CoMP measurement set is composed of serving cell 1 and cooperating cell 2 and cell 3 Composition, such as figure 1 shown. The CCU configures the orthogonal non-zero power CSI reference signals CSI-RS1, CSI-RS2 and CSI-RS3 for Cel...

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Abstract

A radio communication system comprising a network and user terminals, wherein the network comprises a plurality of radio stations and a controller controlling the plurality of radio stations, wherein at least two of the plurality of radio stations communicate with user terminals, wherein the control The device informs the user terminal of information about resources used for interference measurements, wherein the user terminal calculates and reports channel quality information based on the information.

Description

Background technique [0001] The present invention relates generally to a radio communication system, and more particularly, to a technique of controlling a feedback operation of a user terminal in a Coordinated Multipoint (CoMP) transmission / reception scheme. [0002] In LTE-Advanced (Long Term Evolution) release (Rel.11), Coordinated Multipoint Transmission / Reception is considered as a tool for improving coverage at high data rates, cell edge throughput and also improving system throughput, as described in 3GPP TR described in Coordinated multi-point operation for LTE physical layeraspects (version 11) of section 4 of 36.819v11.0.0 (hereinafter referred to as "NPL 1"). As described in Section 5.1.3 of NPL1, it has been agreed to support the CoMP scheme, Joint Transmission (JT), Dynamic Point Selection (DPS) and Coordinated Scheduling / Coordinated Beamforming (CS / CB). In the case of JT and DPS, the data for the user equipment (UE) can be provided at more than one point in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00H04B7/02
CPCH04B17/345H04B7/024H04L5/0035H04L5/0048H04L5/0057H04B17/24H04B17/309H04W72/23H04W72/541H04W24/08
Inventor 刘乐井上高道石井直人鹿仓义一
Owner NEC CORP