JP2012050120A - 基地局装置及び受信方法 - Google Patents
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- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
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- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
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Abstract
【解決手段】回線品質情報取出部103は、受信信号よりCQIを抽出する。割当制御部104は、各ユーザの通信端末装置の要求伝送率情報等及びCQIに基づいて、各通信端末装置の要求伝送率を満たすように、通信端末装置毎にサブキャリアを割り当てるとともに変調方式を選択する。要求サブキャリア数決定部105は、各ユーザの通信端末装置の要求伝送率情報等に基づいて、各通信端末装置の要求伝送率を満たすように、通信端末装置毎に割り当てるサブキャリア数を決定する。要求サブキャリア数情報生成部107は、通信端末装置毎に割り当てたサブキャリア数情報を生成する。サブキャリア割当部110は、選択されたサブキャリアにパケットデータを割り当てる。変調部111−1〜111−Nは、各サブキャリアに割り当てられたパケットデータを適応変調する。
【選択図】図3
Description
図3は、本発明の実施の形態1に係る無線通信装置100の構成を示すブロック図である。
α:定数、
Rk:通信端末装置200−kの要求伝送率(kはユーザ番号で、かつ2以上の自然数)、
r:伝送率がもっとも高いモジュレーション・コーディング・スキームズを使用する際の1つのサブキャリアの伝送率、または、平均信号対雑音比と定数γ(例えば、γ=0〜3dBの定数)とを加算した値の回線品質値より要求パケットエラーレートを満たすモジュレーション・コーディング・スキームズを使用する際の1つのサブキャリアの伝送率、
β:定数(例えば、β=2.0〜4.0)、
Rk:通信端末装置200−kの要求伝送率(kはユーザ番号で、かつ2以上の自然数)、
N:全サブキャリア数、
Sk>(Q×N)/(Q+log2N) ・・・(3)
ここで、Q:SNR情報を量子化するのに必要な符号化ビット数、
N:全サブキャリア数、である。
図7は、本発明の実施の形態2に係る無線通信装置500の構成を示すブロック図である。なお、図7においては、図3と同一構成である部分には同一の符号を付してその説明は省略する。また、通信端末装置の構成は図4と同一構成であるので、その説明は省略する。
Sk(t)=δ×S′k(t−1) ・・・(4)
ここで、Sk(t):現フレームのサブキャリア数、
S′k(t−1):現フレームの1つ前のフレームにて通信端末装置200−kに実際に割り当てられたサブキャリア数、
δ:定数(ただし、2.0≦δ)、である。
102、202 受信RF部
103 回線品質情報取出部
104 割当制御部
105 要求サブキャリア数決定部
106 ユーザ情報蓄積部
107 要求サブキャリア数情報生成部
108 割当情報生成部
109 制御情報多重部
110 サブキャリア割当部
111−1〜111−N 変調部
112 切替部
113 IFFT部
114 GI挿入部
115、216 送信RF部
203 GI除去部
204 FFT部
205 回線品質推定部
206 回線推定部
207 等化部
208 分離部
209−1〜209−N 復調部
210 P/S部
211 制御情報取出部
212 割当情報取出部
213 サブキャリア情報取出部
214 サブキャリア選択部
215 回線品質情報形成部
Claims (3)
- 通信端末装置からCQIを受信する基地局装置であって、
各通信端末装置が前記基地局装置に対し、全てのサブキャリアのCQIを送信するか、若しくは、複数のサブキャリアの番号を示す第1の情報と前記複数のサブキャリアのCQIに関する第2の情報との総データ量が前記全てのサブキャリアのCQIの総データ量よりも小さい、前記第1の情報と前記第2の情報とを送信するかを、前記各通信端末装置に対して決定する決定部と、
前記決定部が前記各通信端末装置に対して決定した決定内容を示す情報を前記各通信端末装置に送信する送信部と、
前記全てのサブキャリアのCQIを送信することが決定された通信端末装置からはサブキャリアの位置を示す情報が付加されない前記全てのサブキャリアのCQIを受信し、前記第1の情報と前記第2の情報とを送信することが決定された通信端末装置からは、前記全てのサブキャリアのCQIを受信せずに前記第1の情報と前記第2の情報とを受信する受信部と、
を有する基地局装置。 - 基地局装置が通信端末装置からCQIを受信する受信方法であって、
各通信端末装置が前記基地局装置に対し、全てのサブキャリアのCQIを送信するか、若しくは、複数のサブキャリアの番号を示す第1の情報と前記複数のサブキャリアのCQIに関する第2の情報との総データ量が前記全てのサブキャリアのCQIの総データ量よりも小さい、前記第1の情報と前記第2の情報とを送信するかを、前記基地局装置が前記各通信端末装置に対して決定し、
前記各通信端末装置に対して決定された決定内容を示す情報を前記基地局装置から前記各通信端末装置に送信し、
前記全てのサブキャリアのCQIを送信することが決定された通信端末装置からはサブキャリアの位置を示す情報を伴わずに前記全てのサブキャリアのCQIを受信し、前記第1の情報と前記第2の情報とを送信することが決定された通信端末装置からは、前記全てのサブキャリアのCQIを受信せずに前記第1の情報と前記第2の情報とを受信する、
受信方法。 - 基地局装置であって、
端末装置が複数のサブキャリアの番号を示す第1の情報と前記複数のサブキャリアのCQIに関する第2の情報を送信することを決定し、
前記第1の情報及び前記第2の情報を送信することを示す情報を前記端末装置に対し送信し、
前記端末装置から、前記第1の情報と前記第2の情報を受信する、
基地局装置。
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EP (2) | EP3484089B1 (ja) |
JP (5) | JP4490921B2 (ja) |
KR (6) | KR101109885B1 (ja) |
CN (3) | CN102932125B (ja) |
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ES (2) | ES2904814T3 (ja) |
HU (1) | HUE043293T2 (ja) |
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JP2019521598A (ja) * | 2016-07-21 | 2019-07-25 | テレフオンアクチーボラゲット エルエム エリクソン(パブル) | データチャネルの開始位置のためのフレキシブル指示 |
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JP2019521598A (ja) * | 2016-07-21 | 2019-07-25 | テレフオンアクチーボラゲット エルエム エリクソン(パブル) | データチャネルの開始位置のためのフレキシブル指示 |
US11038651B2 (en) | 2016-07-21 | 2021-06-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Flexible indication for start position of data channel |
US11683143B2 (en) | 2016-07-21 | 2023-06-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Flexible indication for start position of data channel |
US11997044B2 (en) | 2016-07-21 | 2024-05-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Flexible indication for start position of data channel |
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