JP2016131371A - 物理ハイブリッド自動再送要求指示チャネル割当方法 - Google Patents
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/04—Arrangements for detecting or preventing errors in the information received by diversity reception using frequency diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1692—Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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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
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Abstract
【解決手段】拡散率に従って必要なCDM(符号群分割多重)グループの個数間の比を考慮してCDMグループを割り当て、割り当てられたCDMグループにPHICHを割り当てる。例えば12個のACK/NACK信号を伝送する場合、拡散率が4のときにCDMグループが2個必要とすると、拡散率が2の場合にはCDMグループを3個ではなく4個とする。これにより使用周波数とアンテナの関係において、拡散率が4の場合と、拡散率が2の場合と同じ伝送構造を維持することができる。
【選択図】図9
Description
Claims (10)
- 無線通信システムにおいて、データを受信する方法であって、
移動局が、1以上のPHICHグループを受信するステップであって、該1以上のPHICHグループの各々のPHICHグループは、1以上の多重化されたACK/NACK信号を伝達するステップと、
前記移動局が、第1の関数を用いて、前記1以上の多重化されたACK/NACK信号の1つのACK/NACK信号に対するPHICHグループインデックスを決定するステップと、
前記移動局が、第2の関数を用いて、前記ACK/NACK信号に対するコードインデックスを決定するステップと、
を有し、
前記第1の関数と前記第2の関数は、共通の変数を有し、
前記第1の関数は、前記共通の変数が1増加するに従い、前記PHICHグループインデックスを変化させる特性を有し、
前記第2の関数は、前記共通の変数が前記1以上のPHICHグループの数を単位として増加するに従い、前記コードインデックスが変化する特性を有する、データ受信方法。 - 前記共通の変数は、前記ACK/NACK信号に対応するデータブロックの送信に対し使用される1以上のアップリンク物理リソースブロック(PRB)インデックスの1つのインデックスを有する、請求項1に記載のデータ受信方法。
- 復調基準信号に関連するパラメータ(nDMRS)が、前記PHICHグループインデックス及び前記コードインデックスを決定する際のオフセットとして使用される、請求項1に記載のデータ受信方法。
- 前記第1の関数は、iPHICH mod Ngを有し、
前記iPHICHは前記共通の変数を表し、前記Ngは前記1以上のPHICHグループの数を表し、前記modはモジュロ演算を表す、請求項1に記載のデータ受信方法。 - 前記第2の関数は、floor(iPHICH/Ng)を有し、
前記iPHICHは前記共通の変数を表し、前記Ngは前記1以上のPHICHグループの数を表し、前記floorは床関数を表す、請求項1に記載のデータ受信方法。 - コードインデックスは、同相(I)コード、続いて直交位相(Q)コードに順番にマッピングされる、請求項1に記載のデータ受信方法。
- 前記移動局が、前記PHICHグループインデックスにより識別された前記1以上のPHICHグループの1つのPHICHグループから、前記1以上の多重化されたACK/NACK信号を読み出すステップと、
前記移動局が、前記コードインデックスにより識別された直交コード又は準直交コードを用いて、前記読み出された1以上の多重化されたACK/NACK信号を逆拡散するステップと、
を更に有する、請求項1に記載のデータ受信方法。 - 前記1以上のPHICHグループの数は、1より大きい、請求項1に記載のデータ受信方法。
- 前記PHICHグループインデックスは、前記1以上のPHICHグループの中から前記移動局に割当てられた1つのPHICHグループを識別する、請求項1に記載のデータ受信方法。
- 前記コードインデックスは、前記ACK/NACK信号の多重化において使用される直交コード又は準直交コードを識別する、請求項1に記載のデータ受信方法。
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US2389508P | 2008-01-28 | 2008-01-28 | |
US61/023,895 | 2008-01-28 | ||
KR1020080124085A KR100925440B1 (ko) | 2008-01-28 | 2008-12-08 | 물리 하이브리드 arq 지시 채널 할당 방법 |
KR10-2008-0124085 | 2008-12-08 |
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JP2013081501A Active JP5540131B2 (ja) | 2008-01-28 | 2013-04-09 | 物理ハイブリッド自動再送要求指示チャネル割当方法 |
JP2014091681A Active JP5908939B2 (ja) | 2008-01-28 | 2014-04-25 | 物理ハイブリッド自動再送要求指示チャネル割当方法 |
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