JP2016119690A - アップリンクにおいて多重アンテナ送信の送信電力制御を行うための方法および装置 - Google Patents
アップリンクにおいて多重アンテナ送信の送信電力制御を行うための方法および装置 Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
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- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
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- 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
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
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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
- H04B7/0413—MIMO systems
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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
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
- H04B7/0465—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account
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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
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
Abstract
Description
本出願は、参照により本明細書に組み込まれている、2009年10月2日に出願した米国特許仮出願第61/248,034号明細書および2009年10月2日に出願した米国特許仮出願第61/247,995号明細書の利益を主張するものである。
Pout1=|w1|2G1 式(1)
Pout2=|w2|2G2 式(2)
と表すことができ、式中、G1およびG2は、それぞれ、増幅器PA1およびPA2の電力利得である。重みw1およびw2が制約されていない場合、図2の送信機は、両方のアンテナ上で総和されたときに一定の電力出力を発生しえない。
Pout1=α2G1 式(3)
Pout2=(1−α2)G2 式(4)
と表すことができる。
Pmax,tx=min{Maximum_allowed_UL_TX_Power,Pmax} 式(5)
と定義され、式中、Maximum_allowed_UL_TX_Powerは、UMTS地上無線アクセスネットワーク(UTRAN)によって設定され、Pmaxは、WTRU電力クラスに基づくWTRU公称最大出力電力である。
PDPCCH=max(PDPCCH,filtered,1,PDPCCH,filtered,2) 式(11)
のようにフィルタ処理されたDPCCH電力推定値の最大値を選択することによってDPCCHコード電力を計算する。
PDPCCH=PDPCCH,filtered,1+PDPCCH,filtered,2 式(14)
のように実行することができる。
UPH=Pmax,α/PDPCCH 式(15)
のように計算され、式中、PDPCCHは、DPCCH上の送信コード電力である。
UPH=min(UPH1,UPH2) 式(16)
のように報告することができ、式中、UPHは、WTRUによってスケジューリング情報(SI)の一部としてネットワークに報告される値である。
UPH=max(UPH1,UPH2) 式(21)
のように報告することができる。
PDPCCH(t)=PDPCCH,1(t)+PDPCCH,2(t) 式(30)
のように実行し、式中、Pmax,tx,1およびPmax,tx,2は、それぞれ、送信アンテナ1および2からのWTRUの最大送信電力である。次いで、WTRUは、平均期間(例えば、100ms)にわたってステップ毎のUPHであるUPH(t)を平均して、ネットワークに報告すべきUPHを求めることを、
(1)ネットワークによって構成されるような最大許容電力、
(2)WTRUカテゴリによって記述されるような最大許容電力、
(3)WTRUがUL TXダイバーシティオペレーション用に構成されている場合にWTRUカテゴリによって定義されている通りの最大許容電力の半分、または
(4)ネットワークによって構成されているような、またはWTRUカテゴリによって記述されているような、最大許容電力の割合ρ(ネットワークによって構成されている、または規格に事前に定義されている)。
α2:アンテナ2に対する重み利得
(φ1):アンテナ1に対する位相
(φ2):アンテナ2に対する位相
Tth:閾値。
絶対的変化量≡Cabs,j=|α’j−αj| 式(40)
のように振幅利得を計算することができる。変化量が閾値より大きい場合(つまり、Cabs,j>Tth)、第2のステップを適用する。
1.WTRUでのアップリンクにおける多重アンテナ送信の送信電力制御のための方法。
Claims (10)
- ワイヤレス送受信ユニット(WTRU)であって、
セルラーネットワークから構成情報を受信するように構成された回路を備え、
前記回路は、単一コードワード送信についての第1のHARQオフセット値および多重コードワード送信についての第2のHARQオフセット値を前記受信された構成情報から導出するようにさらに構成され、
前記回路は、前記セルラーネットワークから信号を受信するようにさらに構成され、前記信号は、前記WTRUが単一コードワードまたは多重コードワードを送信することになるかどうかを示し、
前記回路は、前記信号に応答し、かつHARQ情報が送信されることになるという条件で、前記第1のHARQオフセット値に基づいて単一コードワードのビットを処理し、または前記第2のHARQオフセット値に基づいて多重コードワードのビットを処理するようにさらに構成される、
WTRU。 - 前記WTRUが多重コードワードを送信することになり、かつ送信電力レベルが最大電力レベルよりも大きいという条件で、前記送信電力レベルが前記最大電力レベルを超えないように、等しい電力スケーリングがそれぞれのアンテナに適用される、請求項1に記載のWTRU。
- 前記回路は、電力制御コマンドを受信するようにさらに構成され、同じ電力制御コマンドは、単一コードワードおよび多重コードワード送信についての送信電力レベルを判定するように集められ、前記同じ電力制御コマンドは、前記多重コードワードのそれぞれについての前記送信電力レベルを判定するために使用される、請求項1に記載のWTRU。
- 前記回路は、単一コードワード送信および多重コードワード送信の両方のために単一の電力制御ループを使用するように構成される、請求項1に記載のWTRU。
- ワイヤレス送受信ユニット(WTRU)によって、セルラーネットワークから構成情報を受信することと、
前記WTRUによって、単一コードワード送信についての第1のHARQオフセット値および多重コードワード送信についての第2のHARQオフセット値を前記受信された構成情報から導出することと、
前記WTRUによって、前記セルラーネットワークから信号を受信することであって、前記信号は、前記WTRUが単一コードワードまたは多重コードワードを送信することになるかどうかを示す、ことと、
前記信号に応答し、かつHARQ情報が送信されることになるという条件で、前記WTRUによって、前記第1のHARQオフセット値に基づいて単一コードワードのビットを処理し、または前記第2のHARQオフセット値に基づいて多重コードワードのビットを処理することと
を備える方法。 - 前記WTRUが多重コードワードを送信することになり、かつ送信電力レベルが最大電力レベルよりも大きいという条件で、前記送信電力レベルが前記最大電力レベルを超えないように、前記WTRUによって、等しい電力スケーリングをそれぞれのアンテナに適用することをさらに備える、請求項5に記載の方法。
- 電力制御コマンドを受信することをさらに備え、同じ電力制御コマンドは、単一コードワードおよび多重コードワード送信についての送信電力レベルを判定するように集められ、前記同じ電力制御コマンドは、前記多重コードワードのそれぞれについての前記送信電力レベルを判定するために使用される、請求項5に記載の方法。
- 単一コードワード送信および多重コードワード送信の両方のために単一の電力制御ループを使用することをさらに備える、請求項5に記載の方法。
- ワイヤレスネットワークノードであって、
構成情報をワイヤレス送受信ユニット(WTRU)に送信するように構成された回路であって、前記構成情報に基づいて、前記WTRUは、単一コードワード送信についての第1のHARQオフセット値および多重コードワード送信についての第2のHARQオフセット値を導出することができる、回路を備え、
前記回路は、信号を前記WTRUに送信するようにさらに構成され、前記信号は、前記WTRUが単一コードワードまたは多重コードワードを送信することになるかどうかを示し、
前記回路は、前記信号に応答し、かつHARQ情報が受信されるという条件で、前記第1のHARQオフセット値に基づいて単一コードワードについて処理されたビット、または前記第2のHARQオフセット値に基づいて多重コードワードについて処理されたビットを有する信号を前記WTRUから受信するようにさらに構成される、
ワイヤレスネットワークノード。 - 前記回路は、単一コードワード送信および多重コードワード送信の両方のために単一の電力制御ループを使用するようにさらに構成される、請求項9に記載のワイヤレスネットワークノード。
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US24799509P | 2009-10-02 | 2009-10-02 | |
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US61/247,995 | 2009-10-02 |
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US9867147B2 (en) | 2018-01-09 |
TWI519189B (zh) | 2016-01-21 |
AU2010300408B2 (en) | 2014-04-17 |
JP5879404B2 (ja) | 2016-03-08 |
US9031600B2 (en) | 2015-05-12 |
JP5597715B2 (ja) | 2014-10-01 |
KR101700471B1 (ko) | 2017-01-26 |
JP2015008501A (ja) | 2015-01-15 |
AU2014204450A1 (en) | 2014-07-31 |
AU2014204450B2 (en) | 2016-05-12 |
EP2484163A2 (en) | 2012-08-08 |
AU2010300408A1 (en) | 2012-04-26 |
WO2011041719A2 (en) | 2011-04-07 |
JP6220907B2 (ja) | 2017-10-25 |
US10602458B2 (en) | 2020-03-24 |
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