JP2011125028A - 無線送信装置及び無線送信方法 - Google Patents
無線送信装置及び無線送信方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0025—Transmission of mode-switching indication
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/0029—Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling
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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
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Communication Control (AREA)
Abstract
【解決手段】ユーザデータのみを送信する場合のTB size、割当RB数、変調方式及び符号化率などの各パラメータの組合せである基本TFと、L1/L2制御情報の組合せによってユーザデータのTB sizeが異なる派生TFとを関連付けたテーブルをBSとMS間で共有し、L1/L2制御情報を多重する場合にも、基本TFと対応するIndexをBSからMSに通知する。
【選択図】図10
Description
図7は、本発明の実施の形態1に係るBS100の構成を示すブロック図である。この図において、符号化部101は、後述するULスケジューラ部109内のUL送信フォーマット決定部111から出力されたTF Indexを帯域割当情報として、帯域割当情報に誤り訂正符号化を施し、符号化データ列を変調部102に出力する。
本発明の実施の形態2に係るBS及びMSの構成は、実施の形態1の図7及び図9にそれぞれ示した構成と同様であるので、図7及び図9を援用し、重複する説明は省略する。
本発明の実施の形態3に係るBS及びMSの構成は、実施の形態1の図7及び図9にそれぞれ示した構成と同様であるので、図7及び図9を援用し、重複する説明は省略する。
本発明の実施の形態4では、Channel dependent scheduling/ Adaptive scheduling(伝送路品質に応じた適応時間−周波数スケジューリング、以下、単に「適応スケジューリング」という)及びPersistent scheduling/ Static schedulingを切り替えてスケジューリングする場合を想定して説明する。
本発明の実施の形態5では、IR(Incremental redundancy)方式のHARQ(Hybrid Auto Repeat reQuest)を適用したシステムを想定した場合について説明する。
102、160、162 変調部
103、164 送信RF部
104、151 アンテナ
105、152 受信RF部
106、153 復調部
107、154 復号部
108、155 分離部
109、301、401 ULスケジューラ部
110、156 TFテーブル記憶部
111、157 UL送信フォーマット決定部
112 UL受信フォーマット決定部
158 TB size設定部
163 多重部
302、351、402、451 第1TFテーブル記憶部
303、352、403、452 第2TFテーブル記憶部
304、353、404、453 テーブル選択部
Claims (12)
- ユーザデータのTransport Block size(TB size)を含む送信フォーマットを指示するインデックスを送信する送信手段と、
前記送信フォーマットを用いて符号化された、前記ユーザデータと制御情報とを受信する受信手段と、
を具備し、
前記受信手段は、前記送信フォーマットのTB sizeに対応する符号化率が、前記ユーザデータと共に受信する前記制御情報との組み合わせによって、調整されている前記ユーザデータを受信する、
無線送信装置。 - 前記送信フォーマットは、前記ユーザデータに対する送信パラメータが設定されている、
請求項1に記載の無線送信装置。 - 前記送信フォーマットには、TB size及び変調方式の各送信パラメータが含まれている、
請求項1又は請求項2に記載の無線送信装置。 - 前記制御情報は、ACK/NACK又はCQIである、
請求項1から請求項3のいずれかに記載の無線送信装置。 - 受信した前記ユーザデータ及び前記制御情報を復号する復号手段をさらに有する、
請求項1から請求項4のいずれかに記載の無線送信装置。 - 前記復号手段は、前記送信フォーマットを用いて、受信した前記ユーザデータ及び前記制御情報を復号する、
請求項5に記載の無線送信装置。 - 前記インデックスと前記送信フォーマットとの関連付けを記憶する記憶手段をさらに具備し、
前記復号手段は、前記インデックス及び前記関連付けを参照して得られた前記送信フォーマットを用いる、
請求項5又は請求項6に記載の無線送信装置。 - 前記受信手段は、TB sizeが、前記制御情報との組み合わせによって変化していない前記ユーザデータを受信する、
請求項1から請求項7のいずれかに記載の無線送信装置。 - 前記受信手段は、前記符号化率が、前記制御情報との組み合わせによって変化している前記ユーザデータを受信する、
請求項1から請求項8のいずれかに記載の無線送信装置。 - 前記受信手段は、前記符号化率が調整されることによって、レートマッチングが行われている前記ユーザデータを受信する、
請求項1から請求項9のいずれかに記載の無線送信装置。 - 前記受信手段は、シンボル数が、前記ユーザデータのシンボル数によって変化している前記制御情報を受信する、
請求項1から請求項10のいずれかに記載の無線送信装置。 - ユーザデータのTransport Block sizeを(TB size)含む送信フォーマットを指示するインデックスを送信する送信工程と、
前記送信フォーマットを用いて符号化された、前記ユーザデータと制御情報とを受信する受信工程と、
を具備し、
前記受信工程は、前記送信フォーマットのTB sizeに対応する符号化率が、前記ユーザデータと共に受信する前記制御情報との組み合わせによって、調整されている前記ユーザデータを受信する、
無線送信方法。
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