JP4924753B2 - 移動端末 - Google Patents
移動端末 Download PDFInfo
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- JP4924753B2 JP4924753B2 JP2010275435A JP2010275435A JP4924753B2 JP 4924753 B2 JP4924753 B2 JP 4924753B2 JP 2010275435 A JP2010275435 A JP 2010275435A JP 2010275435 A JP2010275435 A JP 2010275435A JP 4924753 B2 JP4924753 B2 JP 4924753B2
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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
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
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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
- 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
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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
- H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
-
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
-
- 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
-
- 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
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
-
- 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
- H04L5/0058—Allocation criteria
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
-
- 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
- H04L5/0078—Timing of allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/06—Reselecting a communication resource in the serving access point
-
- 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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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Description
〔S2〕UE20は、すべてのパイロット信号を受信する。
〔S3〕UE20は、パイロット信号毎に伝搬環境を測定して、伝搬環境情報を生成し、基地局10へ返信する。
〔S5〕基地局10は、通信すべきUEを選択し、使用する通信サービスを制御情報としてUE20へ送信する。
〔S7〕基地局10は、スケジューリングによって決定した通信サービスでデータを送信する。
次に無線通信システム1の動作についてさらに詳しく説明する。なお、以降では、基地局10は複数の異なる通信サービスとして、HSDPAの通信サービスと、OFDM(Orthogonal Frequency Division Multiplexing)の通信サービスとの2種類のサービスを行う場合を例にして説明する。
なお、スケジューリング前の状態として、UE20−1〜20−5は、HSDPA通信を行っており、UE20−6〜20−10は、OFDM通信を行っているとする。
UE20−1〜20−10は、パイロット信号f1pを受信すると、伝搬環境情報として、UE毎に搬送波周波数f1の伝搬環境におけるCQIを求めて、基地局10に返信する。またパイロット信号f2pを受信すると、UE毎に搬送波周波数f2の伝搬環境におけるCQIを求めて、基地局10に返信する(例えば、UE20−1は、搬送波周波数f1で求めたCQIを基地局10へ通知し、かつ搬送波周波数f2で求めたCQIを基地局10へ通知する。その他のUEも同様の動作を行う)。
(1)従来スケジューリングでは選択されなかったUE20−8が選択され、従来スケジューリングで選択されていたUE20−5が選択されていない。
(1)について見ると、従来スケジューリングで選択されていたUE20−5(HSDPA)のCQI=13であり、UE20−8(OFDM)のCQI=14なので、UE20−8のCQIの方がUE20−5のCQIよりも高い。
〔S12〕UE20−1〜20−nは、パイロット信号を受信してCQIを求め、基地局10へ返信する。この場合、UE20−1〜20−nは、HS-DPCCH(High Speed Dedicated Physical Control CHannel)と呼ばれる無線チャネルにCQI情報を乗せて基地局10へ返信する。
〔S14〕基地局10は、スケジューリング結果である制御情報を、選択したUE20へ送信する。この場合、基地局10は、HS-SCCH(High Speed Shared Control CHannel)と呼ばれる無線チャネルに制御情報を乗せて(2msのタイムスロットに乗せて)UE20へ送信する。
〔S16〕基地局10は、スケジューリングによって設定した通信サービスでUE20へデータを送信する。このデータは図9で上述したHS-PDSCHに乗せられてUE20へ送信される。
QoSを考慮しない統合スケジューリングでは、UE20から通知されたCQIの値によって自ずと伝送速度が決まる。例えば、CQIによって決まる変更内容の例として、HS-PDSCHの本数、TBS(bit)、変調タイプがあるとする。
10 基地局
10a パイロット信号送出部
15 スケジューラ
10b 制御情報送信部
20−1〜20−n 移動端末
20a 伝搬環境情報通知部
26 送受信機能設定部
20b QoS情報送信部
Claims (2)
- 移動端末において、
基地局から送信された多元接続方式の異なる複数の通信システムに共通のパイロット信号を受信して伝搬環境を測定し、伝搬環境情報を前記基地局へ通知する伝搬環境情報通知部と、
前記基地局側で、各端末から通知された前記異なる複数の通信システムに対する前記パイロット信号に対する前記伝搬環境情報の比較にもとづき、該異なる複数の通信システムのスケジューリング処理を1つにまとめて行われるスケジューリングによって、送信相手とする自端末及び該多元接続方式の異なる複数の通信システムの中から該自端末へ提供する通信システムが選択された場合に、前記選択された通信システムに関する制御情報にもとづいて、前記選択された通信システムに対応する送受信機能の設定を行う送受信機能設定部と、
を備えることを特徴とする、前記異なる複数の通信システムを享受可能な移動端末。 - 移動端末において、
基地局から送信された多元接続方式の異なる複数の通信システムに対して、同一の搬送波周波数を持つ共通のパイロット信号を受信して伝搬環境を測定し、伝搬環境情報を前記基地局へ通知する伝搬環境情報通知部と、
前記基地局側で、各端末から通知された前記異なる複数の通信システムに対する前記パイロット信号に対する前記伝搬環境情報の比較にもとづき、該異なる複数の通信システムのスケジューリング処理を1つにまとめて行われるスケジューリングによって、送信相手とする自端末及び該多元接続方式の異なる複数の通信システムの中から該自端末へ提供する通信システムが選択された場合に、前記選択された通信システムに関する制御情報にもとづいて、前記選択された通信システムに対応する送受信機能の設定を行う送受信機能設定部と、
を備えることを特徴とする、前記異なる複数の通信システムを享受可能な移動端末。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010275435A JP4924753B2 (ja) | 2005-01-13 | 2010-12-10 | 移動端末 |
JP2011241102A JP5304871B2 (ja) | 2005-01-13 | 2011-11-02 | 移動端末 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/000284 WO2006075372A1 (ja) | 2005-01-13 | 2005-01-13 | 無線通信システム |
JP2010004733A JP4723036B2 (ja) | 2005-01-13 | 2010-01-13 | 無線通信システム |
JP2010275435A JP4924753B2 (ja) | 2005-01-13 | 2010-12-10 | 移動端末 |
Related Parent Applications (1)
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JP2010004733A Division JP4723036B2 (ja) | 2005-01-13 | 2010-01-13 | 無線通信システム |
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JP2011241102A Division JP5304871B2 (ja) | 2005-01-13 | 2011-11-02 | 移動端末 |
Publications (2)
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JP2011091843A JP2011091843A (ja) | 2011-05-06 |
JP4924753B2 true JP4924753B2 (ja) | 2012-04-25 |
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Family Applications (5)
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JP2006552797A Expired - Fee Related JP4476297B2 (ja) | 2005-01-13 | 2005-01-13 | 無線通信システム |
JP2010004733A Active JP4723036B2 (ja) | 2005-01-13 | 2010-01-13 | 無線通信システム |
JP2010275435A Expired - Fee Related JP4924753B2 (ja) | 2005-01-13 | 2010-12-10 | 移動端末 |
JP2011241102A Expired - Fee Related JP5304871B2 (ja) | 2005-01-13 | 2011-11-02 | 移動端末 |
JP2013100903A Active JP5505542B2 (ja) | 2005-01-13 | 2013-05-13 | 無線通信システム、基地局および移動端末 |
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JP2006552797A Expired - Fee Related JP4476297B2 (ja) | 2005-01-13 | 2005-01-13 | 無線通信システム |
JP2010004733A Active JP4723036B2 (ja) | 2005-01-13 | 2010-01-13 | 無線通信システム |
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JP2011241102A Expired - Fee Related JP5304871B2 (ja) | 2005-01-13 | 2011-11-02 | 移動端末 |
JP2013100903A Active JP5505542B2 (ja) | 2005-01-13 | 2013-05-13 | 無線通信システム、基地局および移動端末 |
Country Status (5)
Country | Link |
---|---|
US (2) | US8996026B2 (ja) |
EP (3) | EP1838012A4 (ja) |
JP (5) | JP4476297B2 (ja) |
CN (1) | CN101099311B (ja) |
WO (1) | WO2006075372A1 (ja) |
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Also Published As
Publication number | Publication date |
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JP2012023785A (ja) | 2012-02-02 |
US20080020779A1 (en) | 2008-01-24 |
EP1838012A4 (en) | 2013-03-06 |
EP1838012A1 (en) | 2007-09-26 |
JP5505542B2 (ja) | 2014-05-28 |
JP2011091843A (ja) | 2011-05-06 |
JP4723036B2 (ja) | 2011-07-13 |
JP2010124485A (ja) | 2010-06-03 |
EP2624481A1 (en) | 2013-08-07 |
JP2013176153A (ja) | 2013-09-05 |
US8996026B2 (en) | 2015-03-31 |
JP4476297B2 (ja) | 2010-06-09 |
US9655128B2 (en) | 2017-05-16 |
JPWO2006075372A1 (ja) | 2008-06-12 |
WO2006075372A1 (ja) | 2006-07-20 |
US20140314045A1 (en) | 2014-10-23 |
EP2624482A1 (en) | 2013-08-07 |
CN101099311A (zh) | 2008-01-02 |
JP5304871B2 (ja) | 2013-10-02 |
CN101099311B (zh) | 2012-12-19 |
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