JP6220907B2 - 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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- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
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- 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
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- 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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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であって、前記構成情報は、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オフセット値に関連付けられる、回路を備え、
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を処理し、かつ送信し、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を処理し、かつ送信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く、かつ前記WTRUが複数のアンテナを備えるという条件で、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をそれぞれのアンテナに適用する、請求項1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蓄積され、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であって、前記構成情報は、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オフセット値に関連付けられる、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を処理して送信すること、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を処理して送信することと
を備える方法。 - 前記WTRUが複数のアンテナを備え、かつ前記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蓄積され、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オフセット値に関連付けられる、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信号を、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のワイヤレスネットワークノード。
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US8542763B2 (en) | 2004-04-02 | 2013-09-24 | Rearden, Llc | Systems and methods to coordinate transmissions in distributed wireless systems via user clustering |
US10200094B2 (en) | 2004-04-02 | 2019-02-05 | Rearden, Llc | Interference management, handoff, power control and link adaptation in distributed-input distributed-output (DIDO) communication systems |
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JP2017085188A (ja) * | 2014-03-13 | 2017-05-18 | シャープ株式会社 | 端末装置、基地局装置および通信方法 |
JP6592448B2 (ja) * | 2014-10-17 | 2019-10-16 | シャープ株式会社 | 端末装置、通信方法、および、集積回路 |
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WO2011041719A3 (en) | 2011-07-21 |
US20150245304A1 (en) | 2015-08-27 |
KR101700471B1 (ko) | 2017-01-26 |
JP5597715B2 (ja) | 2014-10-01 |
CN104270808A (zh) | 2015-01-07 |
JP2015008501A (ja) | 2015-01-15 |
JP2013507071A (ja) | 2013-02-28 |
JP2020025365A (ja) | 2020-02-13 |
KR20120107937A (ko) | 2012-10-04 |
AU2010300408B2 (en) | 2014-04-17 |
AU2014204450A1 (en) | 2014-07-31 |
AU2010300408A1 (en) | 2012-04-26 |
US9867147B2 (en) | 2018-01-09 |
JP2018042249A (ja) | 2018-03-15 |
CN104270808B (zh) | 2018-02-16 |
JP6832825B2 (ja) | 2021-02-24 |
US9031600B2 (en) | 2015-05-12 |
AU2014204450B2 (en) | 2016-05-12 |
TW201119451A (en) | 2011-06-01 |
WO2011041719A2 (en) | 2011-04-07 |
JP5879404B2 (ja) | 2016-03-08 |
US10602458B2 (en) | 2020-03-24 |
US20180132195A1 (en) | 2018-05-10 |
CN102577542A (zh) | 2012-07-11 |
TWI519189B (zh) | 2016-01-21 |
EP3410789A1 (en) | 2018-12-05 |
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