JP5770861B2 - 基地局がアンテナ・アレイを有する無線システムにおける電力割当て - Google Patents
基地局がアンテナ・アレイを有する無線システムにおける電力割当て Download PDFInfo
- Publication number
- JP5770861B2 JP5770861B2 JP2013552572A JP2013552572A JP5770861B2 JP 5770861 B2 JP5770861 B2 JP 5770861B2 JP 2013552572 A JP2013552572 A JP 2013552572A JP 2013552572 A JP2013552572 A JP 2013552572A JP 5770861 B2 JP5770861 B2 JP 5770861B2
- Authority
- JP
- Japan
- Prior art keywords
- user equipment
- base station
- cell
- power
- signal
- 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.)
- Expired - Fee Related
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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
-
- 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
- H04W52/143—Downlink 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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
-
- 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
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
Description
式1:
式2:
Rlk≒log(1+SIRlk+付加雑音)
知られているように、基地局が相対的に多数の基地局アンテナを含む場合、付加ノイズは相対的に小さくなり得る。したがって、式2は次式となる。
式3:
Rlk≒log(1+SIRlk)
式4:
Smin=min{SIRlk、l=1、…、K}
式5:
Smax=1000×Smin
式6:
f(plk,…,pKk)=p1k+p2k+…+pKk
ここでKは、同じパイロット系列vkを共用する能動ユーザの数である。
s=(Smax−Smin)/2
ステップS335でコントローラは、ステップS325で選択された、sおよび式1に基づく制約を受ける線形電力関数(例えば、式6)の最小電力解を求める。例えば、任意の線形プログラミング法(例えば、既知のシンプレックス法)を使用して、次の問題の解の実現可能性を調べることができる。
f(plk,…,pKk)=p1k+p2k+…+pKkを次式に従って最小化せよ。
式8(式1に基づく):
式9:
plk≧0、l=1、…、K
Claims (10)
- 無線ネットワークにおいて送信電力を割り当てる方法であって、
1つの基地局と関連する各能動ユーザ機器に送信電力を割当てるステップと、
前記基地局と関連する前記能動ユーザ機器の各々に対する信号対干渉比を計算するステップと、
前記計算された信号対干渉比に基づいて、前記基地局が前記基地局と関連付けられた各能動ユーザ機器にダウンリンク信号を送信する電力を、前記ダウンリンク信号のそれぞれが別の能動ユーザ機器と関連付けられ、前記基地局が、ダウンリンク信号を前記関連付けられた能動ユーザ機器にそれぞれ異なる電力で送信できるように決定するステップと、
前記関連付けられたダウンリンク信号を前記基地局から前記能動ユーザ機器に、前記決定された電力で送信するステップと
を含む、方法。 - 前記決定された電力が、前記関連付けられた能動ユーザ機器に関連する電力と、別の基地局と関連付けられたユーザ機器の信号対干渉比とに基づく、請求項1に記載の方法。
- 前記信号対干渉比が、前記別の基地局から送信されるダウンリンク信号と、前記送信される関連付けられたダウンリンク信号とに基づく、請求項2に記載の方法。
- 前記信号対干渉比が、前記送信される関連付けられたダウンリンク信号と、同じパイロット系列を共用する前記別の基地局から送信される前記ダウンリンク信号との間で改善される、請求項3に記載の方法。
- 前記信号対干渉比が、前記送信される関連付けられたダウンリンク信号に関連するフェージング係数と、前記別の基地局から送信されるダウンリンク信号に関連するフェージング係数とに基づく、請求項3に記載の方法。
- 基地局がダウンリンク信号を送信する電力を決定する前記ステップが、
信号対干渉比の最大値および信号対干渉比の最小値に基づく変数を計算するステップと、
前記変数に基づく制約を受ける線形電力関数の最小電力解を求めるステップと
を含む、請求項1に記載の方法。 - 前記無線ネットワークと関連付けられた能動ユーザ機器の数がユーザ機器のしきい値百分率よりも大きい場合、決定された電力が最大である能動ユーザ機器を除外するステップ
をさらに含む、請求項1に記載の方法。 - 前記ユーザ機器の前記百分率が、信号対干渉比が相対的に小さい能動ユーザ機器の数と、信号対干渉比が相対的に大きい能動ユーザ機器の数とに基づく、請求項9に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/021,177 US8620373B2 (en) | 2011-02-04 | 2011-02-04 | Power allocation in a wireless system with base stations having antenna arrays |
US13/021,177 | 2011-02-04 | ||
PCT/US2012/023236 WO2012106289A2 (en) | 2011-02-04 | 2012-01-31 | Power allocation in a wireless system with base stations having antenna arrays |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014507899A JP2014507899A (ja) | 2014-03-27 |
JP5770861B2 true JP5770861B2 (ja) | 2015-08-26 |
Family
ID=45582057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013552572A Expired - Fee Related JP5770861B2 (ja) | 2011-02-04 | 2012-01-31 | 基地局がアンテナ・アレイを有する無線システムにおける電力割当て |
Country Status (6)
Country | Link |
---|---|
US (1) | US8620373B2 (ja) |
EP (1) | EP2671412A2 (ja) |
JP (1) | JP5770861B2 (ja) |
KR (1) | KR101542357B1 (ja) |
CN (1) | CN103477686B (ja) |
WO (1) | WO2012106289A2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20130114471A (ko) * | 2012-04-09 | 2013-10-17 | 한국전자통신연구원 | 다중입력 다중출력 시스템에서 송신 전력을 할당하는 방법 및 장치 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI102703B1 (fi) * | 1997-03-27 | 1999-01-29 | Nokia Telecommunications Oy | Kanavan allokointimenetelmä |
US6377555B1 (en) * | 1998-09-22 | 2002-04-23 | Jhong Sam Lee | Method for determining forward link channel powers for a CDMA cellular or PCS system |
US6587690B1 (en) | 1999-02-12 | 2003-07-01 | Lucent Technologies Inc. | Method for allocating downlink electromagnetic power in wireless networks |
US6879572B1 (en) * | 1999-12-09 | 2005-04-12 | Verizon Laboratories Inc. | Power control for active link quality protection in CDMA networks |
US6996069B2 (en) * | 2000-02-22 | 2006-02-07 | Qualcomm, Incorporated | Method and apparatus for controlling transmit power of multiple channels in a CDMA communication system |
US6931257B2 (en) * | 2001-03-02 | 2005-08-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Fast forward power control during soft handoff |
US7020110B2 (en) * | 2002-01-08 | 2006-03-28 | Qualcomm Incorporated | Resource allocation for MIMO-OFDM communication systems |
US7567502B2 (en) * | 2004-10-14 | 2009-07-28 | Qualcomm Incorporated | Methods and apparatus for adjusting bandwidth allocation in a wireless communications system |
US7756548B2 (en) * | 2005-09-19 | 2010-07-13 | Qualcomm Incorporated | Methods and apparatus for use in a wireless communications system that uses a multi-mode base station |
US7839842B2 (en) * | 2005-09-21 | 2010-11-23 | Broadcom Corporation | Method and system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission |
US9572179B2 (en) * | 2005-12-22 | 2017-02-14 | Qualcomm Incorporated | Methods and apparatus for communicating transmission backlog information |
US7853281B2 (en) * | 2006-04-14 | 2010-12-14 | Qualcomm Incorporated | Methods and apparatus for tracking wireless terminal power information |
CN101427479B (zh) * | 2006-04-27 | 2014-08-20 | 艾利森电话股份有限公司 | 具有多个干扰通信资源的无线***中的功率控制方法及装置 |
US8565170B2 (en) * | 2009-01-14 | 2013-10-22 | Qualcomm Incorporated | Method and apparatus for scheduling data transmission on multiple carriers |
EP2497214A4 (en) * | 2009-11-08 | 2015-04-22 | Lg Electronics Inc | METHOD AND BASE STATION FOR REGULATING DOWNLINK TRANSMISSION POWER, AND METHOD AND USER EQUIPMENT FOR RECEIVING PDSCH |
US8868091B2 (en) * | 2010-01-18 | 2014-10-21 | Qualcomm Incorporated | Methods and apparatus for facilitating inter-cell interference coordination via over the air load indicator and relative narrowband transmit power |
-
2011
- 2011-02-04 US US13/021,177 patent/US8620373B2/en active Active
-
2012
- 2012-01-31 WO PCT/US2012/023236 patent/WO2012106289A2/en active Application Filing
- 2012-01-31 KR KR1020137020422A patent/KR101542357B1/ko active IP Right Grant
- 2012-01-31 EP EP12703662.2A patent/EP2671412A2/en not_active Withdrawn
- 2012-01-31 CN CN201280007452.1A patent/CN103477686B/zh active Active
- 2012-01-31 JP JP2013552572A patent/JP5770861B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2012106289A2 (en) | 2012-08-09 |
KR101542357B1 (ko) | 2015-08-06 |
EP2671412A2 (en) | 2013-12-11 |
JP2014507899A (ja) | 2014-03-27 |
US8620373B2 (en) | 2013-12-31 |
CN103477686B (zh) | 2018-01-16 |
US20120201283A1 (en) | 2012-08-09 |
KR20130105726A (ko) | 2013-09-25 |
WO2012106289A3 (en) | 2012-10-26 |
CN103477686A (zh) | 2013-12-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11863252B2 (en) | Terminal device capability transmission method, apparatus, and system | |
JP6262155B2 (ja) | インテリジェント受信機動作の方法及び装置 | |
WO2018137367A1 (zh) | 一种配置资源指示方法及装置 | |
US9225490B2 (en) | Method and apparatus for configuring resource elements for the provision of channel state information reference signals | |
TW201906445A (zh) | 波束管理方法、網路設備和終端 | |
CN104488214B (zh) | 用于在无线通信***中联合执行信道估计和干扰估计的方法和装置 | |
CN108604950A (zh) | 数据传输方法及装置 | |
CN107046431B (zh) | 信息的传输、接收方法及装置 | |
CN112135309B (zh) | 一种网络优化方法及装置 | |
CN105515623A (zh) | 一种波束分配方法以及基站 | |
CN104168595A (zh) | 一种多点协作传输方法、装置及*** | |
JP5770861B2 (ja) | 基地局がアンテナ・アレイを有する無線システムにおける電力割当て | |
CN104253639A (zh) | 获取信道质量指示的方法及装置 | |
US11706749B2 (en) | Cooperative resource allocation method and apparatus for downlink simultaneous wireless information and power transfer network | |
US11057094B2 (en) | Channel state information obtaining method and device | |
CN114844605A (zh) | Srs资源配置方法、装置、设备及可读存储介质 | |
KR101393141B1 (ko) | 이종 셀룰러 네트워크 환경에서의 다중 무선접속기술 선택 접속과 동시 접속 및 부하 분산하는 기법 | |
CN115208526B (zh) | 信号传输方法、装置及终端 | |
WO2021248444A1 (en) | Receive beam control | |
EP2705627A1 (en) | Method and apparatus for configuring resource elements | |
WO2022237636A1 (zh) | 信号传输方法、装置、终端及基站 | |
KR20100078090A (ko) | 무선 이동통신 시스템에서의 mu-mimo 스케줄링을 위한 수신 전력 기반 페어링 방법 | |
Du et al. | Joint base stations clustering and feedback bits allocation for multi‐cell coordinated beamforming systems | |
CN117098179A (zh) | 通信方法及相关装置 | |
CN116017497A (zh) | 信道状态信息csi测量方法、终端及网络侧设备 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20140709 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140715 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20141015 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20141022 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150115 |
|
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: 20150528 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20150625 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5770861 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |