US 9,179,419 B2 · Method of controlling uplink transmission power at UE in wireless communication system and apparatus thereof

Abstract

A method of determining uplink transmission power at a user equipment (UE) in a wireless communication system is disclosed. The method includes receiving channel status information-reference signal (CSI-RS) settings and downlink transmission power values for a plurality of transmission points (TPs) from a higher layer, receiving CSI-RSs from the plurality of TPs, estimating path loss values corresponding to the plurality of TPs based on the received CSI-RSs, determining the uplink transmission power using the estimated path loss values, and transmitting an uplink signal to one or more of the plurality of TPs based upon the determined uplink transmission power.

Claims14

Dependent claims

A method of determining uplink transmission power at a user equipment (UE) in a wireless communication system, the method comprising:

receiving channel status information-reference signal (CSI-RS) settings and downlink transmission power values for a plurality of transmission points (TPs) from a higher layer;
receiving CSI-RSs from the plurality of TPs;
estimating path loss values corresponding to the plurality of TPs based on the received CSI-RSs;
determining the uplink transmission power using the estimated path loss values;
and
transmitting an uplink signal to one or more of the plurality of TPs based upon the determined uplink transmission power,
wherein the CSI-RS settings include an indicator indicating whether the CSI-RSs are used for path loss value estimation in addition to channel status information feedback.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/992,171Filed 2 Feb 2012 · us provisional application

Priority

KR 10-2012-000497116 Jan 2012

Published

US 2013/0272158 A117 Oct 2013

Granted

3 Nov 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal
H04B 7/0417
MIMO systems: feedback systems
H04L 5/0023
Three-dimensional division: time-frequency-space
H04L 5/0048
Arrangements for allocating sub-channels of the transmission path: allocation of pilot signals, i.e. of signals known to the receiver

Method of controlling uplink transmission power at UE in wireless communication system and apparatus thereof

Life of this patent

Method of controlling uplink transmission power at UE in wireless communication system and apparatus thereof

Life of this patent

Abstract

Claims14