JP6625981B2 - 無線通信システムにおける上向きリンク電力を制御する方法及び装置 - Google Patents
無線通信システムにおける上向きリンク電力を制御する方法及び装置 Download PDFInfo
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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
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/281—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account user or data type priority
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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
- H04W52/34—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
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- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
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- 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
- H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
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- 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
- H04W52/365—Power headroom reporting
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- H—ELECTRICITY
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- 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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- H04W72/00—Local resource management
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- 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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- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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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
- H04W52/06—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
- H04W52/38—TPC being performed in particular situations
- H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Description
本発明は、例えば、以下を提供する。
(項目1)
無線通信システムにおける端末(UE;user equipment)による上向きリンク電力を制御する方法であって、
UEが第1のeNB(eNodeB)に伝送される上向きリンク信号に第1の最大電力まで割り当てることができる第1の上向きリンクサブフレーム集合に対して、前記第1の最大電力を設定し、
前記UEが前記第1のeNBに伝送される上向きリンク信号に第2の最大電力まで割り当てることができる第2の上向きリンクサブフレーム集合に対して、前記第2の最大電力を設定し、及び
前記第1の最大電力または前記第2の最大電力のうち、少なくとも1つに基づいて前記上向きリンク信号を伝送することを含む方法。
(項目2)
前記上向きリンク信号は、前記第1の上向きリンクサブフレーム集合で前記第1のeNBにのみ伝送されることを特徴とする項目1に記載の方法。
(項目3)
前記上向きリンク信号は、前記第2の上向きリンクサブフレーム集合で前記第1のeNB及び第2のeNBに伝送されることを特徴とする項目1に記載の方法。
(項目4)
前記第1の最大電力及び前記第2の最大電力は、ネットワークにより構成されることを特徴とする項目1に記載の方法。
(項目5)
前記上向きリンク信号のための上向きリンク電力は、どのセルがサービングセルであるか、PUCCH(physical uplink control channel)またはPUSCH(physical uplink shared channel)が他のセルに伝送されるか否か、またはPUCCH同時伝送が前記サービングセルに対して構成されるか否かのうち、少なくとも1つによって決定されることを特徴とする項目1に記載の方法。
(項目6)
前記上向きリンク信号に対する上向きリンク電力は、スケーリング因子に基づいて決定されることを特徴とする項目1に記載の方法。
(項目7)
前記第1の上向きリンクサブフレーム集合がどこに位置するかを指示するビットマップを上位階層を介して伝送することをさらに含む項目1に記載の方法。
(項目8)
前記第1のeNB及び前記第2のeNB間のサブフレーム境界のオフセットを伝送することをさらに含む項目1に記載の方法。
(項目9)
前記第1のeNB及び前記第2のeNB間のサブフレーム境界のオフセットをネットワークから受信することをさらに含む項目1に記載の方法。
(項目10)
前記第1のeNBまたは前記第2のeNBのうち、いずれか1つは、FDD(frequency division duplex)方式を導入し、
他の1つは、TDD(time division duplex)方式を導入することを特徴とする項目1に記載の方法。
(項目11)
前記第1のeNBは、複数の構成搬送波(CC;component carrier)を有し、
前記第2のeNBは、複数のCCを有することを特徴とする項目1に記載の方法。
(項目12)
無線通信システムにおける端末(UE;user equipment)による上向きリンク電力を制御する方法であって、
経路損失の変更を検出した後、パワーヘッドルーム報告(PHR;power headroom report)をトリガし、
搬送波グループ別に最大電力を計算し、及び
前記トリガされたPHRを伝送することを含む方法。
(項目13)
前記搬送波グループ別の最大電力は、搬送波グループ別に構成された搬送波の個数、前記経路損失、または搬送波グループ別マージン(margin)のうち、少なくとも1つに基づいて計算されることを特徴とする項目12に記載の方法。
(項目14)
前記搬送波グループ別マージンは、ネットワークにより構成されるか、前記UEにより決定されることを特徴とする項目13に記載の方法。
(項目15)
前記トリガされたPHRは、ランダムアクセス手順のうち、メッセージ3を介して伝送されることを特徴とする項目12に記載の方法。
Claims (9)
- 無線通信システムにおけるUE(user equipment)により実行される方法であって、前記方法は、
第2のサブフレームで第2のeNB(eNodeB)への上向きリンク(UL)伝送が発生し得ないかを決定することであって、前記第2のサブフレームは、時間的に第1のサブフレームと重なる、ことと、
前記第2のサブフレームで前記第2のeNBへの前記UL伝送が発生し得ないと決定されたときに、第1のeNBへのUL伝送のための伝送電力を、前記第1のeNBへの前記UL伝送のみが発生し得るサブフレームにおいて使用される第1の電力内で決定することと、
前記第2のサブフレームで前記第2のeNBへの前記UL伝送が発生し得ると決定されたときに、前記第1のeNBへの前記UL伝送のための伝送電力を、前記第1のeNBへの前記UL伝送及び前記第2のeNBへの前記UL伝送の両方が発生し得るサブフレームにおいて使用される第2の電力内で決定することと、
前記決定された伝送電力に基づいて前記第1のサブフレームでの前記第1のeNBへの前記UL伝送を実行することと
を含み、
前記UEは、前記第1のeNB及び前記第2のeNBの両方に二重連結で連結されている、方法。 - 前記第1のeNBは、前記二重連結でMCG(master cell group)に対応し、
前記第2のeNBは、前記二重連結でSCG(secondary cell group)に対応する、請求項1に記載の方法。 - 前記第1のeNBは、前記二重連結でSCGに対応し、
前記第2のeNBは、前記二重連結でMCGに対応する、請求項1に記載の方法。 - 前記第1のサブフレームは、FDD(frequency division duplex)サブフレームであり、
前記第2のサブフレームは、TDD(time division duplex)構成に基づいたTDD下向きリンク(DL)サブフレームである、請求項1に記載の方法。 - 前記第1のサブフレームは、TDD構成に基づいたTDD ULサブフレームであり、
前記第2のサブフレームは、前記TDD構成に基づいたTDD DLサブフレームである、請求項1に記載の方法。 - 前記第1のeNB及び前記第2のeNBは、互いに異なるTDD構成を有する、請求項5に記載の方法。
- 前記二重連結は、前記第1のeNB及び前記第2のeNBが互いに整列されていない非同期二重連結である、請求項1に記載の方法。
- 前記第1のeNBは、複数のCC(component carrier)を有し、
前記第2のeNBは、複数のCCを有する、請求項1に記載の方法。 - メモリと、
RF(radio frequency)部と、
前記メモリ及び前記RF部と連結されるプロセッサと
を備えるUE(user equipment)であって、
前記プロセッサは、
第2のサブフレームで第2のeNB(eNodeB)への上向きリンク(UL)伝送が発生し得ないかを決定することであって、前記第2のサブフレームは、時間的に第1のサブフレームと重なる、ことと、
前記第2のサブフレームで前記第2のeNBへの前記UL伝送が発生し得ないと決定されたときに、第1のeNBへのUL伝送のための伝送電力を、前記第1のeNBへの前記UL伝送のみが発生し得るサブフレームにおいて使用される第1の電力内で決定することと、
前記第2のサブフレームで前記第2のeNBへの前記UL伝送が発生し得ると決定されたときに、前記第1のeNBへの前記UL伝送のための伝送電力を、前記第1のeNBへの前記UL伝送及び前記第2のeNBへの前記UL伝送の両方が発生し得るサブフレームにおいて使用される第2の電力内で決定することと、
前記決定された伝送電力に基づいて前記第1のサブフレームでの前記第1のeNBへの前記UL伝送を実行するように前記RF部を制御することと
を実行するように構成されており、前記UEは、前記第1のeNB及び前記第2のeNBの両方に二重連結で連結されている、UE。
Applications Claiming Priority (27)
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PCT/KR2014/008346 WO2015034302A1 (en) | 2013-09-04 | 2014-09-04 | Method and apparatus for controlling uplink power in wireless communication system |
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JP2016540812A Active JP6668242B2 (ja) | 2013-09-04 | 2014-09-04 | 無線通信システムにおける上りリンク電力を制御する方法及び装置 |
JP2016540814A Active JP6625981B2 (ja) | 2013-09-04 | 2014-09-04 | 無線通信システムにおける上向きリンク電力を制御する方法及び装置 |
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