JP2011507330A - 多重化率を考慮したアップリンク電力制御方法 - Google Patents
多重化率を考慮したアップリンク電力制御方法 Download PDFInfo
- Publication number
- JP2011507330A JP2011507330A JP2010536859A JP2010536859A JP2011507330A JP 2011507330 A JP2011507330 A JP 2011507330A JP 2010536859 A JP2010536859 A JP 2010536859A JP 2010536859 A JP2010536859 A JP 2010536859A JP 2011507330 A JP2011507330 A JP 2011507330A
- Authority
- JP
- Japan
- Prior art keywords
- transmission power
- power control
- uplink
- mobile stations
- mobile station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2621—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using frequency division multiple access [FDMA]
-
- 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
-
- 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
- H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
-
- 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
- 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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
【選択図】図14
Description
− cdma mobile_tx_power = −RSSI + PowerOffset + NomPwr + IniPwr + Init_coorection
− RSSI: 移動局に受信されたすべての基地局からの受信強度
− PowerOffset: 周波数と拡散率(spreading rate)によるアップリンク/ダウンリンク経路減殺(path loss)補償値
− NomPwr、IniPwer: ランダムアクセス(random access)初期出力の重み値(weight)を決定する補償値
− Init_correction:移動局で測定されたEc/Io値によって移動局出力値を補償。
− RACH initial power = Path_loss+BS_受信雑音 + RACH_Target_Echo
= PICH_Pwr RSCP + UL interference + Constatn_Value
− CPICH_Pwr: PSCが最も強く受信される基地局のダウンリンクCPICHの出力
− RSCP: Received Signal Code Power、移動局に受信されたCPICHチャネルの受信強度
− UL interference: 基地局受信端で測定された雑音レベル
− Targer_Echo: Random Access受信のためのEc/Io目標値、Constant Value
DPCCH Initial power = DPCCH_Power_Offset − CPICH_RSCP
DPCCH_Power_Offset = Req.Eb/No + Primary CPICH Tx Power + RTWP + 10log(R/W) + 10log((DPCCH/DPDCH)/(1+DPCCH/DPDCH)) + Tx Antenna gain - Rx Diversity gain
− DPCCH_Power_Offst値は、RRCConnectionSetup messageで転送
− DPDCH initial power = DPCCH power * (β_d/β_c)
以下、本発明の一実施例によるアップリンク開ループ電力制御において、一つの時間−周波数領域リソースを、1個の移動局が使用する場合と2以上の移動局が同時に使用する場合における電力制御動作方法について説明する。
Tx_power_level(dBm)
= Tx_Power_SI_MO + f(M)[dBm per subcarrier]
F(M) = −(M)dB
f(M) = −(M−1)dB
Tx_power_level(dBm)
= Tx_Power_SI_MO + f(M,MCS)
Tx_power_level(dBm)
= f(Tx_Power_SI_MO, M, MCS)
本発明の他の実施例による閉ループ電力制御は、数学式6または数学式7で示すことができる。
Pnew = Plast + ΔTPC
Pnew = A + ΔTPC
本発明の他の実施例による電力制御は、数学式8乃至数学式11のように示すことができる。
CLPCnew(dBm)
= CLPClast(dBm) + g(M)(dB)
CLPCnew(dBm)
= CLPClast(dBm) + g(ΔM)(dB)
CLPCnew(dBm)
= CLPCreference(dBm) + h(M)(dB)
CLPCnew(dBm)
= CLPCreference(dBm) + h(ΔM)(dB)
Claims (15)
- マルチセル環境で周波数分割多重化方式を用いる無線移動通信システムにおいてアップリンク送信電力を制御する方法であって、
同一時間に同一のリソースが割り当てられたユーザの個数に関する情報を受信する段階と、
前記受信したユーザの個数に基づいてアップリンク電力制御を行う段階と、
を含む、アップリンク送信電力制御方法。 - マルチセル環境で周波数分割多重化方式を用いる無線移動通信システムにおいてアップリンク送信電力を制御する方法であって、
アップリンク時間−周波数リソースを共有する移動局の個数に関する情報を基地局から受信する段階と、
前記受信した移動局の個数に基づいて電力調整値を算出する段階と、
前記算出された電力調整値を基準送信電力に加えて前記アップリンク送信電力を決定する段階と、
を含み、
前記基準送信電力は、前記一つのアップリンク時間−周波数リソースを1個の移動局のみが使用する場合における該1個の移動局の送信電力と同一である、アップリンク送信電力制御方法。 - 前記算出する段階で、前記電力調整値は−M(dB)で与えられ、ここで、Mは、前記受信した移動局の個数である、請求項2に記載のアップリンク送信電力制御方法。
- 前記算出する段階で、前記電力調整値は、前記受信した移動局の個数及びMCS(modulation coding scheme)レベルを独立変数として含むジョイント関数(joint function)によって算出される、請求項2に記載のアップリンク送信電力制御方法。
- 前記基準送信電力は、以前フレームで転送された信号の送信電力と同一である、請求項2に記載のアップリンク送信電力制御方法。
- マルチセル環境で周波数分割多重化方式を用いる無線移動通信システムにおいてアップリンク送信電力を制御する方法であって、
一つのアップリンク時間−周波数リソースを共有する移動局の個数に関する情報を基地局から受信する段階と、
前記受信した移動局の個数及び基準送信電力を独立変数として含むジョイント関数によって前記アップリンク送信電力を決定する段階と、
を含み、
前記基準送信電力は、前記一つのアップリンク時間−周波数リソースを1個の移動局のみが使用する場合における該1個の移動局の送信電力と同一である、アップリンク送信電力制御方法。 - マルチセル環境で周波数分割多重化方式を用いる無線移動通信システムにおいてアップリンク送信電力を制御する方法であって、
一つのアップリンク時間−周波数リソースを共有する移動局の個数を決定する段階と、
前記決定された移動局の個数が含まれた一つ以上のパラメータに基づいて移動局の送信電力を決定する段階と、
前記決定された送信電力に関する情報を含む送信電力命令メッセージを生成し、該生成された送信電力命令メッセージを前記移動局に転送する段階と、
を含む、アップリンク送信電力制御方法。 - 前記転送する段階は、周期的に行われる、請求項7に記載のアップリンク送信電力制御方法。
- 前記送信電力命令メッセージは、前記移動局に対する指定メッセージ(dedicated message)である、請求項7に記載のアップリンク送信電力制御方法。
- 前記移動局の個数が全周波数バンドにわたって同一の値を有するように決定された場合に、前記送信電力命令メッセージは、ブロードキャストメッセージ(broadcast message)である、請求項7に記載のアップリンク送信電力制御方法。
- 前記移動局の個数を決定する段階で、時点T1における移動局の個数M1及び時点T2における移動局の個数M2が算出され、前記M1及び前記M2のうち、より最近に算出された移動局の個数が、前記一つのアップリンク時間−周波数リソースを共有する移動局の個数として決定される、請求項7に記載のアップリンク送信電力制御方法。
- マルチセル環境で周波数分割多重化方式を用いる無線移動通信システムにおいてアップリンク送信電力を制御する方法であって、
基地局で、一つのアップリンク時間−周波数リソースを共有する移動局の個数を決定して移動局に転送する段階と、
前記移動局で、前記移動局の個数を受信し、該移動局の個数に基づいて電力調整値を決定する段階と、
前記決定された電力調整値を基準送信電力値に加えて前記アップリンク送信電力を決定する段階と、
を含む、アップリンク送信電力制御方法。 - 前記基準送信電力値は、既に転送されたフレームのうち、最後のフレームの送信電力である、請求項12に記載のアップリンク送信電力制御方法。
- 前記基準送信電力値は、前記一つのアップリンク時間−周波数リソースを1個の移動局のみが使用する場合における該1個の移動局の送信電力と同一である、請求項12に記載のアップリンク送信電力制御方法。
- 前記電力調整値は、M(dB)で与えられ、ここで、Mは、前記受信した移動局の個数である、請求項14に記載のアップリンク送信電力制御方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1293107P | 2007-12-12 | 2007-12-12 | |
US61/012,931 | 2007-12-12 | ||
KR10-2008-0113261 | 2008-11-14 | ||
KR1020080113261A KR101572880B1 (ko) | 2007-12-12 | 2008-11-14 | 다중화율을 고려한 상향링크 전력제어 방법 |
PCT/KR2008/007380 WO2009075548A1 (en) | 2007-12-12 | 2008-12-12 | A method for controlling uplink power control considering multiplexing rate/ratio |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011507330A true JP2011507330A (ja) | 2011-03-03 |
JP5081981B2 JP5081981B2 (ja) | 2012-11-28 |
Family
ID=40992232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010536859A Expired - Fee Related JP5081981B2 (ja) | 2007-12-12 | 2008-12-12 | 多重化率を考慮したアップリンク電力制御方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8830904B2 (ja) |
JP (1) | JP5081981B2 (ja) |
KR (1) | KR101572880B1 (ja) |
CN (1) | CN101897133A (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013543353A (ja) * | 2010-11-08 | 2013-11-28 | クアルコム,インコーポレイテッド | アップリンク多入力多出力送信における二次制御チャネルの増強のためのシステムおよび方法 |
US8953713B2 (en) | 2010-11-08 | 2015-02-10 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9007888B2 (en) | 2010-11-08 | 2015-04-14 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9380490B2 (en) | 2010-11-08 | 2016-06-28 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9497773B2 (en) | 2012-02-08 | 2016-11-15 | QUALOCOMM Incorporated | Method and apparatus for enhancing resource allocation for uplink MIMO communication |
US9516609B2 (en) | 2010-11-08 | 2016-12-06 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6807405B1 (en) | 1999-04-28 | 2004-10-19 | Isco International, Inc. | Method and a device for maintaining the performance quality of a code-division multiple access system in the presence of narrow band interference |
US8385483B2 (en) | 2008-11-11 | 2013-02-26 | Isco International, Llc | Self-adaptive digital RF bandpass and bandstop filter architecture |
KR101013708B1 (ko) * | 2008-12-31 | 2011-02-10 | 주식회사 세아네트웍스 | 광대역 무선 통신 시스템에서의 스케줄링 장치 및 방법 |
US8830918B2 (en) * | 2009-03-16 | 2014-09-09 | Interdigital Patent Holdings, Inc. | Method and apparatus for performing uplink transmit diversity |
US8503364B2 (en) * | 2009-07-14 | 2013-08-06 | Qualcomm Incorporated | Broadcast signaling L1 overload indication |
US9031600B2 (en) * | 2009-10-02 | 2015-05-12 | Interdigital Patent Holdings, Inc. | Method and apparatus for transmit power control for multiple antenna transmissions in the uplink |
US8958841B2 (en) | 2009-12-27 | 2015-02-17 | Lg Electronics Inc. | Method and apparatus for controlling uplink transmission power in a multi-carrier wireless communication system |
EP2343936B1 (en) * | 2010-01-11 | 2014-03-12 | Alcatel Lucent | Method for locating a network node of an indoor communication network, network node, second network node, and indoor communication network thereof |
EP2550829B1 (en) * | 2010-03-24 | 2018-01-24 | Telefonaktiebolaget LM Ericsson (publ) | Reducing load in a communications network |
JP5080607B2 (ja) * | 2010-04-05 | 2012-11-21 | 株式会社エヌ・ティ・ティ・ドコモ | 無線基地局装置及び送信電力制御方法 |
WO2011145890A2 (ko) * | 2010-05-20 | 2011-11-24 | 엘지전자 주식회사 | 상향링크 전력제어 방법 및 사용자기기 |
CN102143568B (zh) * | 2010-11-26 | 2015-02-04 | 华为技术有限公司 | 功率控制方法和基站 |
WO2012120797A1 (en) * | 2011-03-04 | 2012-09-13 | Nec Corporation | Base station, radio resource allocation method, and recording medium |
US9288743B2 (en) | 2011-04-01 | 2016-03-15 | Intel Corporation | Uplink power control scheme for distributed RRH systems with same cell ID |
US8537875B2 (en) * | 2011-04-14 | 2013-09-17 | Qualcomm Incorporated | Methods and apparatus for adjusting forward link signal to interference and noise ratio estimates |
US9107173B2 (en) * | 2011-07-28 | 2015-08-11 | Blackberry Limited | Method and system for access and uplink power control for a wireless system having multiple transmit points |
CN103002557B (zh) * | 2011-09-13 | 2016-02-17 | 中磊电子(苏州)有限公司 | 功率控制方法及无线通讯系统 |
US9596658B2 (en) * | 2012-05-31 | 2017-03-14 | Mediatek Inc. | Power control methods |
US9319916B2 (en) | 2013-03-15 | 2016-04-19 | Isco International, Llc | Method and appartus for signal interference processing |
JP6202454B2 (ja) * | 2013-10-24 | 2017-09-27 | ホアウェイ・テクノロジーズ・カンパニー・リミテッド | アップリンク電力制御方法及び装置 |
US9794888B2 (en) | 2014-05-05 | 2017-10-17 | Isco International, Llc | Method and apparatus for increasing performance of a communication link of a communication node |
CN105376035B (zh) * | 2014-08-28 | 2018-10-02 | 成都鼎桥通信技术有限公司 | 非对称上行载波聚合中辅载波的控制方法及装置 |
US20160270102A1 (en) * | 2015-03-14 | 2016-09-15 | Qualcomm Incorporated | Distributed scheduling to control interference for data transactions using grant-less transmissions |
EP3292642B1 (en) | 2015-05-04 | 2020-01-29 | ISCO International, LLC | Method and apparatus for increasing performance of communication paths for communication nodes |
US10727967B2 (en) | 2015-08-20 | 2020-07-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Network node, wireless device and methods therein for performing and handling superposed transmissions in a wireless communications network |
US9974027B2 (en) * | 2016-02-23 | 2018-05-15 | Spidercloud Wireless, Inc. | System and method for closed loop uplink power control |
CA3024175C (en) | 2016-06-01 | 2024-06-11 | Isco International, Llc | Method and apparatus for performing signal conditioning to mitigate interference detected in a communication system |
US10819482B2 (en) * | 2016-08-24 | 2020-10-27 | Qualcomm Incorporated | Sounding reference signal enhancements |
US10638431B2 (en) * | 2017-01-20 | 2020-04-28 | Qualcomm Incorporated | Power control for coordinated multipoint joint transmission |
US10298279B2 (en) | 2017-04-05 | 2019-05-21 | Isco International, Llc | Method and apparatus for increasing performance of communication paths for communication nodes |
US10284313B2 (en) | 2017-08-09 | 2019-05-07 | Isco International, Llc | Method and apparatus for monitoring, detecting, testing, diagnosing and/or mitigating interference in a communication system |
US10812121B2 (en) | 2017-08-09 | 2020-10-20 | Isco International, Llc | Method and apparatus for detecting and analyzing passive intermodulation interference in a communication system |
WO2019151789A1 (ko) * | 2018-01-31 | 2019-08-08 | 엘지전자 주식회사 | 준-정적 스케줄링 기반 상향링크 반복을 위한 방법 및 장치 |
US11057882B1 (en) * | 2018-04-03 | 2021-07-06 | T-Mobile Innovations Llc | Systems and methods for dynamically setting frame configuration in a wireless network |
CN111543092B (zh) * | 2018-05-14 | 2021-11-16 | Oppo广东移动通信有限公司 | 一种终端功率等级的调整方法及装置、计算机存储介质 |
US11277800B1 (en) | 2020-03-19 | 2022-03-15 | Sprint Communications Company L.P. | Wireless access node uplink power control based on uplink error rate |
CN114513841B (zh) * | 2022-04-18 | 2022-07-01 | 国网四川省电力公司电力科学研究院 | 一种电力应急通信系统的多ap协作功率控制方法和系统 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002057634A (ja) * | 2000-08-09 | 2002-02-22 | Nec Corp | 送信電力制御システム及びそれに用いる送信電力制御方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA965340B (en) * | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
JP3946059B2 (ja) * | 2002-03-06 | 2007-07-18 | 株式会社エヌ・ティ・ティ・ドコモ | 移動局、通信システム及び通信方法 |
US6850771B2 (en) * | 2002-06-24 | 2005-02-01 | Qualcomm Incorporated | Uplink power control |
US9078225B2 (en) * | 2003-06-16 | 2015-07-07 | Telefonaktiebolaget L M Ericsson (Publ) | Dynamic mobile power headroom threshold for determining rate increases in the reverse traffic channel of a CDMA network |
KR100725773B1 (ko) * | 2004-08-20 | 2007-06-08 | 삼성전자주식회사 | 시분할 듀플렉스 방식의 이동통신 시스템에서 단말기의상태에 따라 상향링크 전력제어방식을 적응적으로변경하기 위한 장치 및 방법 |
EP1897245A4 (en) | 2005-06-20 | 2013-01-16 | Texas Instruments Inc | LOW UPLINK POWER SUPPLY CONTROL |
US7624729B2 (en) * | 2005-06-26 | 2009-12-01 | Baranovski Nir | Easily lighted grill |
US20070121535A1 (en) * | 2005-09-30 | 2007-05-31 | Wanshi Chen | Dynamic transmit power for non-canonical transmission formats |
KR20070059666A (ko) * | 2005-12-07 | 2007-06-12 | 삼성전자주식회사 | 시분할 듀플렉스 통신 시스템의 전력 제어 방법 및 장치 |
US20080117849A1 (en) * | 2006-09-08 | 2008-05-22 | Qualcomm Incorporated | Method and apparatus for interaction of fast other sector interference (osi) with slow osi |
CN101518146A (zh) * | 2006-09-15 | 2009-08-26 | 交互数字技术公司 | 用于动态更新随机接入参数的方法和设备 |
EP2080306A4 (en) * | 2006-11-06 | 2016-04-13 | Ericsson Telefon Ab L M | DYNAMIC POWER SHIFT ADJUSTMENT FOR UE / BS BASED ON AN ACK NACK ERROR EVENT |
US8977311B2 (en) * | 2008-04-04 | 2015-03-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and arrangement for reducing interference in a wireless communication network |
-
2008
- 2008-11-14 KR KR1020080113261A patent/KR101572880B1/ko active IP Right Grant
- 2008-12-12 US US12/746,710 patent/US8830904B2/en active Active
- 2008-12-12 CN CN2008801205406A patent/CN101897133A/zh active Pending
- 2008-12-12 JP JP2010536859A patent/JP5081981B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002057634A (ja) * | 2000-08-09 | 2002-02-22 | Nec Corp | 送信電力制御システム及びそれに用いる送信電力制御方法 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013543353A (ja) * | 2010-11-08 | 2013-11-28 | クアルコム,インコーポレイテッド | アップリンク多入力多出力送信における二次制御チャネルの増強のためのシステムおよび方法 |
US8953713B2 (en) | 2010-11-08 | 2015-02-10 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9007888B2 (en) | 2010-11-08 | 2015-04-14 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9084207B2 (en) | 2010-11-08 | 2015-07-14 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9380490B2 (en) | 2010-11-08 | 2016-06-28 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9516609B2 (en) | 2010-11-08 | 2016-12-06 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9497773B2 (en) | 2012-02-08 | 2016-11-15 | QUALOCOMM Incorporated | Method and apparatus for enhancing resource allocation for uplink MIMO communication |
Also Published As
Publication number | Publication date |
---|---|
US8830904B2 (en) | 2014-09-09 |
JP5081981B2 (ja) | 2012-11-28 |
KR101572880B1 (ko) | 2015-11-30 |
US20100254292A1 (en) | 2010-10-07 |
CN101897133A (zh) | 2010-11-24 |
KR20090063085A (ko) | 2009-06-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5081981B2 (ja) | 多重化率を考慮したアップリンク電力制御方法 | |
JP5587375B2 (ja) | 無線通信システムでの信号を伝送するための装置及びその方法 | |
Simonsson et al. | Uplink power control in LTE-overview and performance, subtitle: principles and benefits of utilizing rather than compensating for SINR variations | |
Castellanos et al. | Performance of uplink fractional power control in UTRAN LTE | |
RU2327289C2 (ru) | Способ и устройство для адаптивного управления мощностью с разомкнутым контуром с помощью tdd | |
KR101524445B1 (ko) | 업링크 송신 전력을 제어하는 방법 | |
EP2374308B1 (en) | Communication system, user equipment, base station, transmit power deciding method, and program | |
WO2015029729A1 (ja) | 無線基地局、ユーザ端末及び送信電力制御方法 | |
WO2010010818A1 (ja) | 閉ループ送信電力制御方法及び無線基地局装置 | |
JP5066550B2 (ja) | 送信電力制御方法、基地局装置および移動局装置 | |
US20100113077A1 (en) | Apparatus and method for uplink power control in wireless communication system | |
KR20090132630A (ko) | Ofdma/cdma 액세스 단말기에 대한 디지털 및 아날로그 전력 제어 | |
EP2709409B1 (en) | Method for determining uplink transmission power and user equipment | |
JP5080607B2 (ja) | 無線基地局装置及び送信電力制御方法 | |
JP5630906B2 (ja) | 無線通信システムにおける送信電力制御装置及び方法 | |
KR100689452B1 (ko) | 시분할 듀플렉스 방식의 이동통신 시스템에서 적응적개루프 전력 제어 방법 및 장치 | |
WO2009075548A1 (en) | A method for controlling uplink power control considering multiplexing rate/ratio | |
Khangura et al. | Power control algorithms in wireless communication | |
Rosa et al. | Performance aspects of LTE uplink with variable load and bursty data traffic | |
KR20080065212A (ko) | 개선된 부분 전력 제어 방법 및 참조 신호 채널 전력 제어방법 | |
JP6609357B2 (ja) | 無線基地局及びユーザ端末 | |
Tee et al. | Uplink power control for an OFDMA mobile cellular system | |
Liu et al. | Uplink channel-aware scheduling algorithm for LTE-Advanced system | |
Li et al. | A novel power control scheme in OFDMA uplink | |
Li et al. | A Modified Power Control Scheme in OFDMA Uplink |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20120518 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120523 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120731 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20120821 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120903 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150907 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |