JP2014135768A - ランダムアクセスチャンネル応答の取り扱い - Google Patents
ランダムアクセスチャンネル応答の取り扱い Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 238000004891 communication Methods 0.000 description 8
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2612—Arrangements for wireless medium access control, e.g. by allocating physical layer transmission capacity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0466—Wireless resource allocation based on the type of the allocated resource the resource being a scrambling code
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- Engineering & Computer Science (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
【解決手段】複数のWTRU(無線送受信ユニット)の各々が、上りリンクRACHプリアンブル上にてランダムアクセス要求を基地局に送る。基地局によって送られるRACH応答信号(RAICH(アクセス指示チャンネル)メッセージ)が、それぞれのWTRUによって受信される。受信されたRACH応答信号は、制御部分(PDCCH(物理下りリンク制御チャンネル))、およびデータ部分(PDSCH(物理下りリンク共有チャンネル)を備える。RACH応答信号は、複数のCCE(制御チャンネル要素)を備え、各WTRUにその一意なRACH応答信号を提供するためにそれぞれのCCEを割り振る。WTRUは、基地局によって送られた複数のCCEの間からその意図したCCEを特定するように構成される。
【選択図】図2
Description
より良い性能およびスケジューリングの柔軟性のために、CCEは、サブフレームの制御部分の内で時間−周波数領域上に拡散することができる。WTRUに特有のRACH Response制御を提供するために、RACHプリアンブルにおけるランダムアクセス要求と、専用の時間−周波数リソース割り振りとの間の1対1の関連付け(例えば時間オフセット)を使用することができる。
1.無線通信において複数のランダムアクセスチャンネル応答を処理するためにWTRU(Wireless Transmit Receive Unit:無線送受信ユニット)によって実施される方法であって、
制御部分およびデータ部分を有するRACH(Random Access CHannel:ランダムアクセスチャンネル)応答信号を受信することであって、前記データ部分がランダムアクセス割り振りを搬送し、前記制御部分が前記ランダムアクセス要求に対応するランダムアクセス割り振りに対する少なくとも1つのRACH応答に対応し、前記制御部分がCCE(Common Control Element:共通制御要素)のセットを含むことであって、少なくとも1つのCCEは、前記データ部分中の前記ランダムアクセス割り振りに対応することと、
前記制御部分を検索し、前記ランダムアクセス割り振りに対応する前記少なくとも1つのCCEを識別することと
を備えることを特徴とする方法。
前記RACH応答信号のフォーマット符号を検出するように構成されたブラインド復号化器と
を備え、
前記WTRUは、前記フォーマット符号に従って前記制御部分を検索し、前記ランダムアクセス割り振りに対応する前記少なくとも1つのCCEを識別するように構成されたことを特徴とするWTRU。
Claims (14)
- 無線送受信ユニット(WTRU:Wireless Transmit Receive Unit)であって、
ダウンリンク送信の制御部分における共通部分の少なくとも1つの制御チャネル要素(CCE:Control Channel Element)において制御情報のフォーマットを検出するように構成されたプロセッサを備え、
前記制御情報は、前記ダウンリンク送信のデータ部分のリソース割当を指示し、
前記プロセッサは、前記データ部分の指示された前記リソース割当から前記WTRUに割り振られたランダムアクセス応答をリカバーするように構成され、前記WTRUに割り当てられたランダムアクセス無線ネットワーク一時識別子(RA−RNTI:Random Access Radio Network Temporary Identifier)が、前記少なくとも1つのCCEに割り振られることを特徴とするWTRU。 - 前記RA−RNTIは、複数のWTRUに割り振られることを特徴とする請求項1に記載のWTRU。
- 前記制御部分は、物理ダウンリンク制御チャネルを含むことを特徴とする請求項1に記載のWTRU。
- 前記データ部分は、物理ダウンリンク共有チャネルを含むことを特徴とする請求項3に記載のWTRU。
- 前記データ部分の指示された前記リソース割当は、複数のWTRUのランダムアクセス応答を含むことを特徴とする請求項1に記載のWTRU。
- 前記制御部分の前記共通部分は、システム情報ブロック(SIB:System Information Block)により指示されることを特徴とする請求項1に記載のWTRU。
- 前記少なくとも1つのCCEは、前記RA−RNTIでマスクされた循環冗長符号(CRC:Cyclic Redundancy Check)を有することを特徴とする請求項1に記載のWTRU。
- 無線送受信ユニット(WTRU:Wireless Transmit Receive Unit)により、ダウンリンク送信の制御部分における共通部分の少なくとも1つの制御チャネル要素(CCE:Control Channel Element)において制御情報のフォーマットを検出することを備え、
前記制御情報は、前記ダウンリンク送信のデータ部分のリソース割当を指示し、
前記WTRUにより、前記データ部分の指示された前記リソース割当から前記WTRUに割り振られたランダムアクセス応答をリカバーすることであって、前記WTRUに割り当てられたランダムアクセス無線ネットワーク一時識別子(RA−RNTI:Random Access Radio Network Temporary Identifier)が、前記少なくとも1つのCCEに割り振られること
をさらに備えたことを特徴とする方法。 - 前記RA−RNTIは、複数のWTRUに割り振られることを特徴とする請求項8に記載の方法。
- 前記制御部分は、物理ダウンリンク制御チャネルを含むことを特徴とする請求項8に記載の方法。
- 前記データ部分は、物理ダウンリンク共有チャネルを含むことを特徴とする請求項10に記載の方法。
- 前記データ部分の指示された前記リソース割当は、複数のWTRUのランダムアクセス応答を含むことを特徴とする請求項8に記載の方法。
- 前記制御部分の前記共通部分は、システム情報ブロック(SIB:System Information Block)により指示されることを特徴とする請求項8に記載の方法。
- 前記少なくとも1つのCCEは、前記RA−RNTIでマスクされた循環冗長符号(CRC:Cyclic Redundancy Check)を有することを特徴とする請求項8に記載の方法。
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JP2012137083A Active JP5531055B2 (ja) | 2007-10-29 | 2012-06-18 | ランダムアクセスチャンネル応答の取り扱い |
JP2014087504A Active JP5853049B2 (ja) | 2007-10-29 | 2014-04-21 | ランダムアクセスチャンネル応答の取り扱い |
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