US 2015/0318954 A1 · METHOD FOR CALCULATING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATIONS SYSTEM BASED ON MULTIPLE CELLS AND APPARATUS THEREFOR

Abstract

The present application discloses a method for enabling a terminal to report CQI (Channel Quality Indicator) in a wireless communications system. Specifically, the method includes the steps of: receiving the setup information concerning at least one CSI (Channel Status Information Process) through an upper layer; receiving CSI-RS (Channel Status Information-Reference Signal) contained in the setup information from a base station; calculating the CQI by using the CSI-RS under the assumption that the CRS (Cell specific RS) resource contained in a given resource for calculating the CQI is not mapped with data; and reporting the calculated CQI to the base station, wherein the setup information contains the information of the CRS resource.

Claims14

Dependent claims

A method for reporting channel quality indicator (CQI) by a user equipment in a multi-cell based wireless communication system, the method comprising:

receiving configuration information about one or more channel state information (CSI) processes through a higher layer;
receiving a channel state information-reference signal (CSI-RS) included in the configuration information from a base station;
calculating the CQI using the CSI-RS under the assumption that data is not mapped to a cell-specific reference signal (CRS) resource included in predetermined resources for calculating the CQI;
and
reporting the calculated CQI to the base station,
wherein the configuration information includes information about the CRS resource.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/440,276Filed 15 Jan 2014

Priority

16 Jan 2013

Published

5 Nov 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04L 1/0026
Characterised by the signalling: transmission of channel quality indication
H04L 5/0051
Allocation of pilot signals, i.e. of signals known to the receiver: of dedicated pilots, i.e. pilots destined for a single user or terminal
H04L 5/0057
Allocation of signalling, i.e. of overhead other than pilot signals: physical resource allocation for CQI
H04L 5/0094
Signalling for the administration of the divided path, e.g. signalling of configuration information: indication of how sub-channels of the path…

Family

Application61/753,416Us provisional application · filed 16 Jan 2013

Application61/756,446Us provisional application · filed 24 Jan 2013

Application61/758,261Us provisional application · filed 29 Jan 2013

US 9,954,640 B2Related patent

US 2015/0318954 A1This patent

From the US filing history. Foreign family members aren’t listed.

Method for calculating channel state information in wireless communications system based on multiple cells and apparatus therefor

Life of this patent

Method for calculating channel state information in wireless communications system based on multiple cells and apparatus therefor

Life of this patent

Abstract

Claims14