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1. EP2605600 - Inter-cell power control in the presence of fractional frequency reuse

Office European Patent Office
Application Number 12196290
Application Date 30.10.2007
Publication Number 2605600
Publication Date 19.06.2013
Publication Kind A1
IPC
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
52
Power management, e.g. TPC [Transmission Power Control], power saving or power classes
04
TPC [Transmission power control]
18
TPC being performed according to specific parameters
24
using SIR [Signal to Interference Ratio] or other wireless path parameters
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
52
Power management, e.g. TPC [Transmission Power Control], power saving or power classes
04
TPC [Transmission power control]
06
TPC algorithms
14
Separate analysis of uplink or downlink
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
52
Power management, e.g. TPC [Transmission Power Control], power saving or power classes
04
TPC [Transmission power control]
18
TPC being performed according to specific parameters
22
taking into account previous information or commands
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
52
Power management, e.g. TPC [Transmission Power Control], power saving or power classes
04
TPC [Transmission power control]
30
using constraints in the total amount of available transmission power
34
TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
H04W 52/24
H04W 52/14
H04W 52/22
H04W 52/34
CPC
H04W 52/24
H04W 16/02
H04W 24/02
H04W 52/146
H04W 52/225
H04W 52/241
Applicants QUALCOMM INC
Inventors LUO XILIANG
MALLADI DURGA
Priority Data 07844704 30.10.2007 EP
86379206 31.10.2006 US
Title
(DE) Leistungssteuerung zwischen Zellen bei Vorhandensein von partieller Frequenzwiederverwendung
(EN) Inter-cell power control in the presence of fractional frequency reuse
(FR) Commande de puissance entre des cellules en présence d'une réutilisation de fréquence fractionnelle
Abstract
(EN)
System(s) and method(s) are provided for inter-cell power control in the presence of fractional frequency reuse in a wireless communication system. Transmission power control of a terminal (210), and ensuing inter-cell interference mitigation, is accomplished by receiving load indicators (246i) from non-serving sectors (230i), decoding those load indicators corresponding to the non-serving sectors that operate in the same frequency bands as the terminal, and adjusting the transmission power according the states of the decoded load indicators in conjunction with the associated non-serving sectors' forward link signal-to-interference-and-noise ratio at the terminal. The states of the load indicators reflect magnitudes of interference metrics with respect to threshold values. Load indicators can also be conveyed by the non-serving sector to a base station (260) serving the terminal (210) through a backhaul communication (250), and said base station can schedule an adjusted transmission power for the terminal.

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