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1. WO2022024174 - BASE STATION, BASE STATION SYSTEM, AND COMMUNICATION METHOD

Publication Number WO/2022/024174
Publication Date 03.02.2022
International Application No. PCT/JP2020/028675
International Filing Date 27.07.2020
IPC
H04W 16/28 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
16Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cell structures
24Cell structures
28using beam steering
H04B 7/0452 2017.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
0452Multi-user MIMO systems
H04W 28/16 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS
CPC
H04B 7/0452
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
0452Multi-user MIMO systems
H04W 16/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
16Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
24Cell structures
28using beam steering
H04W 28/16
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
Applicants
  • 日本電信電話株式会社 NIPPON TELEGRAPH AND TELEPHONE CORPORATION [JP]/[JP]
Inventors
  • 井上 保彦 INOUE, Yasuhiko
  • 永田 健悟 NAGATA, Kengo
  • 岸田 朗 KISHIDA, Akira
  • 淺井 裕介 ASAI, Yusuke
  • 鷹取 泰司 TAKATORI, Yasushi
Agents
  • 蔵田 昌俊 KURATA, Masatoshi
  • 峰 隆司 MINE, Takashi
  • 井上 正 INOUE, Tadashi
Priority Data
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) BASE STATION, BASE STATION SYSTEM, AND COMMUNICATION METHOD
(FR) STATION DE BASE, SYSTÈME DE STATIONS DE BASE ET PROCÉDÉ DE COMMUNICATION
(JA) 基地局、基地局システム、及び通信方法
Abstract
(EN) A base station according to one aspect of the present invention operates, as a first base station (121), in a base station system (12) including the first base station (121) and a plurality of second base stations (122). The base station is provided with: a carrier sense control unit (66) that, by using an access parameter shared by the plurality of second base stations (122), performs determination on each of the plurality of second base stations (122) as to whether a channel of the second base station (122) is in a vacant state or a busy state; and a processing unit (63) that, by a multiuser MIMO collaboratively using at least two of the second base stations (122) each determined to have the channel in the vacant state, transmits a first signal to be transmitted to a first wireless terminal (14) and a second signal to be transmitted to a second wireless terminal (14).
(FR) Une station de base selon un aspect de la présente invention fonctionne, en tant que première station de base (121), dans un système de stations de base (12) comprenant la première station de base (121) et une pluralité de secondes stations de base (122). La station de base comporte : une unité de commande de détection de porteuse (66) qui, en utilisant un paramètre d'accès partagé par la pluralité de secondes stations de base (122), effectue une détermination sur chaque station de la pluralité de secondes stations de base (122) pour savoir si un canal de la seconde station de base (122) est dans un état vacant ou un état occupé ; et une unité de traitement (63) qui, par un système MIMO multiutilisateur utilisant en collaboration au moins deux des secondes stations de base (122) dont chacune est déterminée comme ayant le canal à l'état vacant, transmet un premier signal à transmettre à un premier terminal sans fil (14) et un second signal à transmettre à un second terminal sans fil (14).
(JA) 本発明の一態様に係る基地局は、第1の基地局(121)と複数の第2の基地局(122)とを含む基地局システム(12)における前記第1の基地局(121)として動作するものであって、前記複数の第2の基地局(122)に共通するアクセスパラメータを使用して、前記複数の第2の基地局(122)のそれぞれについてチャネルが空き状態であるかビジー状態であるかを判定するキャリアセンス制御部(66)と、前記チャネルが前記空き状態であると判定された2つ以上の第2の基地局(122)を協調使用したマルチユーザMIMOにより、第1の無線端末(14)へ送信すべき第1の信号及び第2の無線端末(14)へ送信すべき第2の信号を送信する処理部(63)と、を備える。
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