JP5254282B2 - システム性能向上のためのチャネルサウンディング - Google Patents
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- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
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- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/26—Monitoring; Testing of receivers using historical data, averaging values or statistics
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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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- 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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- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H04W52/38—TPC being performed in particular situations
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- H—ELECTRICITY
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- H—ELECTRICITY
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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
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- H—ELECTRICITY
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- H04L69/323—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the physical layer [OSI layer 1]
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- H—ELECTRICITY
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- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
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- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Electromagnetism (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Description
Claims (19)
- 基地局における無線通信方法であって、
チャネルサウンディング応答の要求(CSRq)をダウンリンクチャネルで無線送受信ユニット(WTRU)に送信することであって、前記CSRqはチャネルサウンディング指示を含む、ことと、
前記チャネルサウンディング指示に従って生成される、前記CSRqに応じたアップリンクのチャネルサウンディング応答(CSR)を受信することであって、前記CSRがシンボル数、サイズ、シンボル振幅で定義されている、ことと、
複数のアンテナで前記CSRの副搬送波の振幅及び位相を測定することにより、多入力多出力(MIMO)のアップリンクのチャネル応答を判定することと、
前記MIMOのアップリンクのチャネル応答に応じて制御情報を決定することであって、前記制御情報が、送信される複数の副搬送波と、複数のアンテナのうちの少なくとも1つを用いて送信される前記複数の副搬送波のそれぞれに関する変調パラメータ及び符号パラメータを含む送信パラメータ設定と、を含む、ことと、
決定した前記制情報を前記WTRUに送信することと、
を備える無線通信方法。 - 前記変調パラメータ及び前記符号パラメータは、チャネル容量最適化技術を用いて決定されることを特徴とする請求項1に記載の方法。
- 前記チャネル容量最適化技術は、電力制御であることを特徴とする請求項2に記載の方法。
- 前記変調パラメータ及び前記符号パラメータは、チャネル信頼性最適化技術を用いて決定されることを特徴とする請求項1に記載の方法。
- 前記制御情報は、送信機の媒体アクセス制御(MAC)層で生成されることを特徴とする請求項1に記載の方法。
- 前記制御情報は、送信機のMAC層とPHY層との組み合わせにより生成されることを特徴とする請求項1に記載の方法。
- 決定した前記送信パラメータ設定は、送信フォーマット(TF)信号を用いて前記WTRUに送信されることを特徴とする請求項1に記載の方法。
- 前記TFは、電力制御パラメータを含むことを特徴とする請求項7に記載の方法。
- 前記CSRの前記サイズは、副搬送波の数であることを特徴とする請求項1に記載の方法。
- 無線通信に使用する基地局であって、
チャネルサウンディング応答の要求(CSRq)をダウンリンクチャネルで無線送受信ユニット(WTRU)に送信するように構成される送信機であって、前記CSRqはチャネルサウンディング指示を含む、送信機と、
前記チャネルサウンディング指示に従って生成される、前記CSRqに応じたアップリンクのチャネルサウンディング応答(CSR)を受信するように構成される受信機であって、前記CSRがシンボル数、サイズ、シンボル振幅で定義されている、受信機と、
複数のアンテナで前記CSRの副搬送波の振幅及び位相を測定することにより、多入力多出力(MIMO)のアップリンクのチャネル応答を判定すること、及び前記MIMOのアップリンクのチャネル応答に応じて制御情報を決定することであって、前記制御情報が、送信される複数の副搬送波と、複数のアンテナのうちの少なくとも1つを用いて送信される前記複数の副搬送波のそれぞれに関する変調パラメータ及び符号パラメータを含む送信パラメータ設定と、を含む、ように決定すること、を行うように構成されるプロセッサーと、
決定した前記制情報を前記WTRUに送信するようにさらに構成される前記送信機と、
を備える基地局。 - 前記CSRの前記サイズは、副搬送波の数であることを特徴とする請求項10に記載の基地局。
- 決定した前記送信パラメータ設定は、送信フォーマット(TF)信号を用いて前記WTRUに送信されることを特徴とする請求項11に記載の基地局。
- 前記TFは、変調方式、符号方式、及び電力制御を含むことを特徴とする請求項12に記載の基地局。
- 無線送受信ユニット(WTRU)であって、
チャネルサウンディング応答の要求(CSRq)をダウンリンクチャネルで受信するように構成される受信機であって、前記CSRqはチャネルサウンディング指示を含む、受信機と、
前記チャネルサウンディング指示に応じて、アップリンクのチャネルサウンディング応答(CSR)を送信するように構成される送信機であって、前記CSRがシンボル数、サイズ、シンボル振幅で定義されている、送信機と、
前記CSRに応じて、アップリンクの多入力多出力(MIMO)のための制御情報を受信するようにさらに構成される前記受信機であって、前記制御情報が、送信される複数の副搬送波と、複数のアンテナのうちの少なくとも1つを用いて前記WTRUにより送信される前記複数の副搬送波のそれぞれに関する変調パラメータ及び符号パラメータを含む送信パラメータ設定と、を含む、前記受信機と、
を備えるWTRU。 - 前記送信パラメータ設定は、前記CSRに基づいて決定されることを特徴とする請求項14に記載のWTRU。
- 決定した前記送信パラメータ設定は、送信フォーマット(TF)信号で受信されることを特徴とする請求項14に記載のWTRU。
- 前記TFは、変調方式、符号方式、及び電力制御を含むことを特徴とする請求項16に記載のWTRU。
- 前記WTRUが、受信した前記制御情報を用いて基地局にデータを送信することを特徴とする請求項14に記載のWTRU。
- 前記CSRの前記サイズは、副搬送波の数であることを特徴とする請求項14に記載のWTRU。
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EP (1) | EP1779702B1 (ja) |
JP (2) | JP5209308B2 (ja) |
KR (5) | KR101265853B1 (ja) |
CN (3) | CN101002498B (ja) |
AR (1) | AR050836A1 (ja) |
CA (1) | CA2577980A1 (ja) |
DE (1) | DE202005012727U1 (ja) |
ES (1) | ES2395941T3 (ja) |
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CN101002498B (zh) * | 2004-08-11 | 2012-02-08 | 美商内数位科技公司 | 改善***性能的信道声响 |
US7969859B2 (en) * | 2005-03-18 | 2011-06-28 | Samsung Electronics Co., Ltd. | Method and system for dynamically allocating sub-carriers in an orthogonal frequency division multiplexing network |
KR100895992B1 (ko) * | 2005-09-16 | 2009-05-07 | 삼성전자주식회사 | 다중 안테나를 사용하는 무선통신시스템에서 안테나 개수를확장하기 위한 장치 및 방법 |
JP2009510898A (ja) * | 2005-09-30 | 2009-03-12 | ミツビシ・エレクトリック・リサーチ・ラボラトリーズ・インコーポレイテッド | Mimoワイヤレスlanにおけるアンテナ及びビームを選択するためのトレーニング信号 |
US7940640B2 (en) | 2006-01-20 | 2011-05-10 | Nortel Networks Limited | Adaptive orthogonal scheduling for virtual MIMO system |
JP4740778B2 (ja) * | 2006-03-27 | 2011-08-03 | 富士通東芝モバイルコミュニケーションズ株式会社 | Ofdm無線通信システムおよび送信装置、受信装置 |
US7894820B2 (en) * | 2006-05-01 | 2011-02-22 | Intel Corporation | Channel feedback using channel state predictions based also on delays |
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