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1. WO2007086149 - BASE STATION, WIRELESS COMMUNICATION SYSTEM, AND PILOT PATTERN DECIDING METHOD

Publication Number WO/2007/086149
Publication Date 02.08.2007
International Application No. PCT/JP2006/302050
International Filing Date 07.02.2006
IPC
H04B 7/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
24for communication between two or more posts
26at least one of which is mobile
H04W 52/32 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
52Power management
04Transmission power control
30using constraints in the total amount of available transmission power
32TPC of broadcast or control channels
CPC
H04B 17/309
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
30of propagation channels
309Measuring or estimating channel quality parameters
H04B 17/382
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
30of propagation channels
382for resource allocation, admission control or handover
H04L 27/262
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2614Peak power aspects
262Reduction thereof by selection of pilot symbols
H04L 5/0048
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0048Allocation of pilot signals, i.e. of signals known to the receiver
H04L 5/0073
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0058Allocation criteria
0073Allocation arrangements that take into account other cell interferences
H04L 5/0091
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
0091Signaling for the administration of the divided path
Applicants
  • 富士通株式会社 FUJITSU LIMITED [JP]/[JP] (AllExceptUS)
  • 下村 剛史 SHIMOMURA, Tsuyoshi [JP]/[JP] (UsOnly)
  • 木村 大 KIMURA, Dai [JP]/[JP] (UsOnly)
Inventors
  • 下村 剛史 SHIMOMURA, Tsuyoshi
  • 木村 大 KIMURA, Dai
Agents
  • 斉藤 千幹 SAITO, Chimoto
Priority Data
PCT/JP2006/30129827.01.2006JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) BASE STATION, WIRELESS COMMUNICATION SYSTEM, AND PILOT PATTERN DECIDING METHOD
(FR) STATION DE BASE, SYSTÈME DE COMMUNICATIONS SANS FIL ET PROCÉDÉ DE DÉCISION DU MOTIF PILOTE
(JA) 基地局及び無線通信システム並びにパイロットパターン決定方法
Abstract
(EN)
In a wireless communication system using a pilot signal during transmission from a user terminal to a base station, the base station creates and holds an order table about the peak-to-average power characteristics of pilot patterns; extracts a difference from the user terminal transmission power or maximum transmission power; and refers to the order table to assign, on a priority basis, a pilot pattern having a good peak-to-average power characteristic to a user terminal having a large transmission power or having a small difference from the maximum transmission power. Alternatively, the base station adaptively assigns a pilot pattern, which has an order in accordance with the user terminal transmission conditions (the transmission power, the distance from the base station and so on), to the user terminal.
(FR)
Selon l'invention, dans un système de communications sans fil utilisant un signal pilote durant une transmission d'un terminal utilisateur à une station de base, ladite station de base crée et retient une table d'ordre sur les caractéristiques de puissance de crête/puissance moyenne des motifs pilotes; extrait une différence de la puissance de transmission du terminal utilisateur ou une puissance de transmission maximale; et se réfère à une table d'ordre pour attribuer, selon la priorité, un motif pilote présentant une bonne caractéristique de puissance de crête/puissance moyenne à une terminal utilisateur ayant une grande puissance de transmission ou une petite différence de la puissance de transmission maximale. En variante, la station de base attribue de manière adaptative un motif pilote, qui a un ordre en conformité avec les états de transmission du terminal utilisateur (puissance de transmission, distance de la station de base, etc.) par rapport au terminal utilisateur.
(JA)
 ユーザ端末から基地局への送信時にパイロット信号を用いる無線通信システムにおいて、基地局は各パイロットパターンのピーク対平均電力特性についての順位表を作成して保持し、ユーザ端末の送信電力あるいは最大送信電力からの差分を抽出し、順位表を参照して送信電力が大きい、あるいは最大送信電力からの差分が小さいユーザ端末に対しピーク対平均電力特性が良いパイロットパターンを基地局及び基地局のパイロットパターン決定方法優先的に割り当てる。あるいはユーザ端末の送信情況(送信電力、基地局からの距離等)に応じた順位のパイロットパターンを適応的にユーザ端末に割り当てる。                                                                         
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