WO2001028126A1 - Adaptive rach power determination for mobile telecommunications user equipment unit - Google Patents

Adaptive rach power determination for mobile telecommunications user equipment unit Download PDF

Info

Publication number
WO2001028126A1
WO2001028126A1 PCT/SE2000/001958 SE0001958W WO0128126A1 WO 2001028126 A1 WO2001028126 A1 WO 2001028126A1 SE 0001958 W SE0001958 W SE 0001958W WO 0128126 A1 WO0128126 A1 WO 0128126A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
telecommunications network
interference
equipment unit
transmit power
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.)
Ceased
Application number
PCT/SE2000/001958
Other languages
English (en)
French (fr)
Inventor
Erik Jönsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23660651&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2001028126(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to EP00973288A priority Critical patent/EP1222755A1/en
Priority to JP2001530231A priority patent/JP2003511962A/ja
Priority to AU11816/01A priority patent/AU1181601A/en
Publication of WO2001028126A1 publication Critical patent/WO2001028126A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/225—Calculation of statistics, e.g. average or variance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [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. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/322—Power control of broadcast channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access

Definitions

  • the present invention pertains to cellular telecommunications, and particularly to determining broadcast power to be used by a mobile user equipment unit when requesting access to a cellular telecommunications network.
  • control node For connection to connection-oriented, switched circuit networks such as PSTN and/or ISDN, the control node can be a mobile switching center (MSC). For connecting to packet switching data services such as the Internet (for example), the control node can be a gateway data support node through which connection is made to the wired data networks, and perhaps one or more serving nodes.
  • MSC mobile switching center
  • gateway data support node For connecting to packet switching data services such as the Internet (for example), the control node can be a gateway data support node through which connection is made to the wired data networks, and perhaps one or more serving nodes.
  • the RACH is a common channel that is available for all user equipment units within a geographical area or cell covered by the base station.
  • the connection request message carried on the RACH generally includes various types of other information, such as (for example) signal strength of the received broadcast channel (so that the base station can calculate the transmission power to use) and some random number for (with probability) making the connection unique in the ell during the initial communication on the common channels (RACH and FACH). It is anticipated that the RACH may also be used for packet data in new telecommunications systems, such as wideband CDMA (WCDMA).
  • WCDMA wideband CDMA
  • a first set of problems can occur when the initially calculated transmit power for the connection request is too low. In such case, the power calculation for transmission of the next connection request, although increased, will probably also be too low. Moreover, the first connection request, sent at a transmit power too low to be received by the base station, can exacerbate the situation by increasing the interference for other user equipment units (perhaps causing them to increase their respective transmit powers) and consuming battery power in the requesting user equipment unit. Further, the delay in sending the next connection request message will likely be increased.
  • a second set of problems can occur when the initially calculated RACH transmit power is higher than necessary. In such case, the connection request message, sent at a greater-than-necessary power, increases interference for other users. In addition, the transmission of the connection request message consumes more power than necessary in the requesting user equipment unit.
  • a third set of problems involves aging of the user equipment unit. As a user equipment unit ages, under otherwise identical conditions the user equipment unit can require a different transmit power than when it was new due, e.g., to changing characteristics of the transmitter and/or receiver components. As a result, the user equipment unit will likely use too high or too low a transmit power for its first connection request.
  • a transmit power value (P RACH ) for a connection request message (RACH) from a mobile user equipment unit (20) to a telecommunications network (18) is determined using a target ratio of received energy to interference value [(Et/Io)R A CH_target ] and a modification factor [(EI J /I C MEAN J DELTA ]-
  • the modification factor is a sliding mean differential between the target ratio and an actual ratio [(E t JIo) A c ⁇ u AL ] of received energy to interference as determined by the telecommunications network.
  • the modification factor allows for the calculation of the transmit power for the connection request message to be adaptive with respect to a changing characteristic of the mobile user equipment unit (e.g., aging of the mobile user equipment unit).
  • the telecommunications network After the mobile user equipment unit successfully completes the connection request message, the telecommunications network sends a access grant message which includes an actual ratio of received energy to interference [(E t JI 0 ) AC TU AL ] determined by the network for use as a latest differential affecting the modification factor for the next connection request message from the mobile user equipment unit.
  • Mobile termination entity (MT) 40 which is sometimes called the Mobile Equipment (ME), contains the radio transmitter/receiver (with antenna 61) and communications control toward the network, e.g., the setup and release of radio connections, handover, etc.
  • Mobile termination entity (MT) 40 can be a standard mobile pocket telephone (e.g., a GSM phone) or a phone card within user equipment unit 20.
  • Terminal adapter (TA) 42 acts as an adaptation between mobile termination entity (MT) 40 and a set of applications executed by the terminal equipment.
  • the terminal adapter (TA) 42 is typically realized as a Modem implemented on a PCMCIA (Personal Computer Memory Card International Association) card, which is inserted in a slot of terminal equipment 44.
  • PCMCIA Personal Computer Memory Card International Association
  • Terminal equipment 44 is normally a small computer (or computer platform), and as such includes both hardware and software. Terminal equipment 44 thus has typical aspects of a computer platform, e.g., a processor with operating system and middleware (Internet protocol suits, for example).
  • terminal equipment 44 has control logic 72 (executed by the processor) for controlling terminal adapter (TA) 42. Control logic 72 performs set-up and release of calls to and from the network 18.
  • Fig. 2 shows terminal equipment 44 wherein mobile termination entity (MT) 40 and terminal adapter (TA) 42 are cards situated in card slots. Terminal adapter (TA) 42 is connected to central processing unit (CPU) 100 by bus 102.
  • Mobile termination entity (MT) is connected to MT interface 65 of terminal adapter (TA) 42 by a cable.
  • Terminal equipment 44 particularly read only memory (ROM) 104 and random access memory (RAM) 106 are also connected to central processing unit (CPU) 100 by bus 102.
  • Terminal equipment 44 interfaces with a user through input device(s) 110 and output device(s) 112, each connected through respective appropriate interfaces 120 and 122 to bus 102.
  • Input device(s) 110 can be a keyboard and/or mouse, for example, while output device(s) 112 can take the form of a display device, such as a LCD display panel, for example.
  • power control unit 268 sets the downlink power level at which base station 22 is to transmit its broadcast channel message, e.g., P perch _ senf If desired, the functions of power control unit 268 can be consolidated in a single unit with BS control unit 262.
  • the broadcast channel message 4-1 can include numerous fields of information, in a manner known in the prior art, but for the purpose of the present invention includes, e.g., fields for the uplink interference I experienced by the telecommunications network 18, the downlink output power P perch _se nt which is used for the broadcast channel message 4-1 , and the target RACH transmit power (EtJIo) RACH _ target that telecommunications network 18 prefers for mobile user equipment unit 20 to utilize when sending a connection request message.
  • fields for the uplink interference I experienced by the telecommunications network 18, the downlink output power P perch _se nt which is used for the broadcast channel message 4-1 and the target RACH transmit power (EtJIo) RACH _ target that telecommunications network 18 prefers for mobile user equipment unit 20 to utilize when sending a connection request message.
  • EtJIo target RACH transmit power
  • Fig. 5 shows basic steps involved in the RACH transmit power calculation process 200 of the present invention.
  • the RACH transmit power calculation process 200 is performed in order to determine a transmit power PRACH to be used for transmitting the connection request message to be sent by mobile user equipment unit 20.
  • the connection request message is illustrated as message 4-2 in Fig. 4.
  • the first value in RACH transmit power historical information FIFO 202 i.e., (E b /Io) DELTA (last) was stored upon the immediately previous successful transmission of a connection request (RACH) message.
  • a mean of the values (E /I 0 ) DELTA (last) through (E b /I 0 ) DELTA (last- n+1) is computed.
  • the RACH transmit power calculation process 200 determines (E(JIo) MEAN _ DELTA as the mean of all values stored in RACH transmit power historical information FIFO 202. It is this (E- D /I C MEAN D ELTA which is herein referred to as a modification factor, or historical-based modification factor.
  • Step 5-6 involves RACH transmit power calculation process 200 determining a value for a parameter (EtJI 0 ) ADAPTED TARGET-
  • the parameter (EtJI 0 ) ADAPTED TARGET is the sum of the value (E b /I 0 ) RACH _ tar et (obtained from the broadcast channel message 4-1 and fetched at step 5-1) and the modification factor, i.e.. the value (E b /I 0 ) MEAN _ DELTA (as determined at step 5-5).
  • the RACH transmit power calculation process 200 uses the calculated value for the parameter (E /I 0 ) ADAP TE D TA R GET to evaluate the following expression for PR ACH :
  • P RAC H as calculated at step 5-8 as the transmit power for transmitting the connection request message 4-2 (see Fig. 4). If the amount of power computed at step 5-7 and utilized at step 5-8 proves adequate, an access granted message 4-3 is received by mobile user equipment unit 20. Therefore, after an appropriate time window has elapsed subsequent to the attempted transmission of a connection request message 4-2 at step 5-8, at step 5-9 a check is made by mobile user equipment unit 20 to determine if it has received an access grant message 4-3. If it is determined at step 5-9 that a access grant message 4-3 has not been timely received, at step 5-10 the RACH transmit power calculation process 200 enters a repeat connection request procedure. The details of the repeat connection request procedure of step 5-10 are not pertinent to the present invention, and can involve any appropriate repeat technique including increasing the power amount by a predetermined factor.
  • step 5-7 is thus adaptive and compensates for poorly tuned equipment in mobile user equipment unit 20.
  • the RACH transmit power calculation process 200 of the present invention increases transmit power for a connection request message 4-2 upon failure of a base station 22 to receive the same, the power increase is performed in more gradual fashion than in currently prevailing techniques. This is due, at least in part, to the ability of the mobile user equipment unit 20 to take into account that the first calculated transmit power is better, closer to the correct value, with the adaptive tuning of the invention than without. Therefore, the power ramping is less aggressive . Without the present invention, the power ramping must be aggressive for guaranteeing that a RACH is sent with sufficient transmit power which is higher, or equal to, the correct value without too many retransmissions.
  • the RACH power calculation of mobile user equipment unit 20 is adaptively changed over the life of mobile user equipment unit 20.
  • the RACH power level as initially calculated at step 5-7 and utilized at step 5-8 is probably correct.
  • the delay for sending connection request messages 4-2 is decreased in view of the initial accuracy, particularly by comparison to a badly tuned mobile user equipment unit 20 that does not employ the advantageous adaptive calculation features of the present invention.
  • the foregoing example has illustrated a sliding mean value technique for achieving adaptability of RACH transmit power.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/SE2000/001958 1999-10-15 2000-10-10 Adaptive rach power determination for mobile telecommunications user equipment unit Ceased WO2001028126A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00973288A EP1222755A1 (en) 1999-10-15 2000-10-10 Adaptive rach power determination for mobile telecommunications user equipment unit
JP2001530231A JP2003511962A (ja) 1999-10-15 2000-10-10 移動通信ユーザ装置ユニットのための適応的ｒａｃｈ電力決定
AU11816/01A AU1181601A (en) 1999-10-15 2000-10-10 Adaptive rach power determination for mobile telecommunications user equipment unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/419,063 US6487420B1 (en) 1999-10-15 1999-10-15 Adaptive rach power determination for mobile telecommunications user equipment unit
US09/419,063 1999-10-15

Publications (1)

Publication Number Publication Date
WO2001028126A1 true WO2001028126A1 (en) 2001-04-19

Family

ID=23660651

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2000/001958 Ceased WO2001028126A1 (en) 1999-10-15 2000-10-10 Adaptive rach power determination for mobile telecommunications user equipment unit

Country Status (7)

Country Link
US (1) US6487420B1 (enExample)
EP (1) EP1222755A1 (enExample)
JP (1) JP2003511962A (enExample)
CN (1) CN100361417C (enExample)
AR (1) AR035018A1 (enExample)
AU (1) AU1181601A (enExample)
WO (1) WO2001028126A1 (enExample)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002099996A1 (en) * 2001-06-04 2002-12-12 Telefonaktiebolaget L M Ericsson (Publ) Technique for improving open loop power control in spread spectrum telecommunications systems
WO2004088876A1 (de) * 2003-04-02 2004-10-14 Siemens Aktiengesellschaft Datenübertragungsverfahren
EP1555765A2 (en) 2004-01-15 2005-07-20 Samsung Electronics Co., Ltd. Transmission power control of a random access channel
WO2007120338A3 (en) * 2005-12-23 2007-12-21 Qualcomm Inc Method and apparatus for determining transmit power for an access channel in a wireless communication network
CN100362771C (zh) * 2004-07-06 2008-01-16 华为技术有限公司 一种4天线模式下物理随机接入信道的接入判决方法
EP1892972A1 (en) * 2006-08-21 2008-02-27 Nokia Siemens Networks Gmbh & Co. Kg Method and system for interference mitigation in a mobile communications system
WO2008018750A3 (en) * 2006-08-08 2009-08-20 Lg Electronics Inc Method and apparatus for transmitting message in a mobile communication system
US9179479B2 (en) 2013-02-11 2015-11-03 Wipro Limited Method and system for admission control in a broadband wireless network

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040057507A1 (en) * 2002-09-24 2004-03-25 Ron Rotstein Link estimation in a communication system
US7643438B2 (en) * 2003-08-28 2010-01-05 Alcatel-Lucent Usa Inc. Method of determining random access channel preamble detection performance in a communication system
SE0302655D0 (sv) * 2003-10-06 2003-10-06 Ericsson Telefon Ab L M Method and arrangement in a telecommunication system
EP1612964A1 (de) * 2004-06-28 2006-01-04 Siemens Aktiengesellschaft Verfahren zum Ermitteln eines Wertes der Sendeleistung für ein von einer sendenden Station an eine empfangende Station zu sendendes Signal sowie Vorrichtung
JP4448403B2 (ja) * 2004-08-16 2010-04-07 富士通株式会社 電力レベル測定装置及び移動局
US7269422B2 (en) * 2005-07-08 2007-09-11 Telefonaktiebolaget Lm Ericsson (Publ) Wireless telecommunications with adjustment of uplink power level
US20070058660A1 (en) * 2005-07-22 2007-03-15 Interdigital Technology Corporation Wireless communication method and apparatus for controlling access to Aloha slots
EP1941642A1 (en) * 2005-10-27 2008-07-09 QUALCOMM Incorporated A method and apparatus for setting reverse link cqi reporting modes in wireless communication system
CN1988407B (zh) * 2005-12-22 2010-07-07 大唐移动通信设备有限公司 基站及其物理随机接入信道的开环功率控制方法
US8258942B1 (en) 2008-01-24 2012-09-04 Cellular Tracking Technologies, LLC Lightweight portable tracking device
KR20100004146A (ko) * 2008-07-03 2010-01-13 삼성전자주식회사 이동통신 시스템에서 음영 지역의 단말의 통신을 위한 장치및 방법
US8805362B2 (en) * 2008-09-11 2014-08-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement for satisfying performance requirements by tuning parameters for accessing a network with random access channels
JP4990863B2 (ja) * 2008-09-25 2012-08-01 シャープ株式会社 送受信装置、移動局装置、移動体通信システム、電力制御方法及び方法
US8792432B2 (en) * 2011-02-14 2014-07-29 Broadcom Corporation Prioritizing RACH message contents

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5564075A (en) * 1993-03-09 1996-10-08 Alcatel N.V. Method and system for controlling the power at which an access packet is sent by a mobile in a mobile radio system
WO1997007600A1 (en) * 1995-08-18 1997-02-27 Nokia Mobile Phones Limited A method for adjusting transmit power during call set-up, and a cellular radio system
WO1997017769A2 (en) * 1995-11-10 1997-05-15 Ionica International Limited Method and apparatus for power control in a telephone system
US5806003A (en) * 1993-07-14 1998-09-08 Nokia Telecommunications Oy Method for adjusting transmission power in a cellular radio system and a subscriber equipment
EP0913957A1 (en) * 1997-10-31 1999-05-06 Lucent Technologies Inc. Power control for mobile wireless communication system
EP0989691A2 (en) * 1998-09-21 2000-03-29 Lucent Technologies Inc. Method and apparatus for adaptive setting of initial traffic power

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713830A (en) 1986-06-30 1987-12-15 Rockwell International Corporation Continuously variable synchronizer apparatus
JPH0758934B2 (ja) * 1989-06-06 1995-06-21 日本電気株式会社 自動車電話装置
US5307379A (en) 1992-04-27 1994-04-26 Motorola, Inc. Automatic noise characterization for optimally enabling a receiver
US5333175A (en) 1993-01-28 1994-07-26 Bell Communications Research, Inc. Method and apparatus for dynamic power control in TDMA portable radio systems
ES2164062T3 (es) 1993-08-03 2002-02-16 Cit Alcatel Sistema de radiotelecomunicaciones con una estacion receptora de multiples sensores y una pluralidad de estaciones emisoras que transmiten paquetes de datos.
JP3192839B2 (ja) 1993-09-20 2001-07-30 富士通株式会社 初期送信電力の決定方法
WO1995008879A1 (en) 1993-09-22 1995-03-30 Massachussetts Institute Of Technology Error-rate based laser drive control
US5426641A (en) 1994-01-28 1995-06-20 Bell Communications Research, Inc. Adaptive class AB amplifier for TDMA wireless communications systems
FI111580B (fi) 1994-06-13 2003-08-15 Nokia Corp Tehonsäätömenetelmä ja -järjestely handoverin yhteydessä matkaviestinjärjestelmässä
US5697053A (en) * 1994-07-28 1997-12-09 Lucent Technologies Inc. Method of power control and cell site selection
FI98579B (fi) * 1995-01-20 1997-03-27 Nokia Telecommunications Oy Suorakanavalla liikennöiminen
US5634195A (en) 1995-03-27 1997-05-27 Telefonaktiebolaget Lm Ericsson System and method for setting of output power parameters in a cellular mobile telecommunication system
TW347616B (en) * 1995-03-31 1998-12-11 Qualcomm Inc Method and apparatus for performing fast power control in a mobile communication system a method and apparatus for controlling transmission power in a mobile communication system is disclosed.
US5844940A (en) * 1995-06-30 1998-12-01 Motorola, Inc. Method and apparatus for determining transmit power levels for data transmission and reception
JP3039402B2 (ja) * 1996-12-05 2000-05-08 日本電気株式会社 移動通信システムの送信電力制御装置
KR980007105A (ko) * 1996-06-28 1998-03-30 김광호 이동국 송신전력 제어방법
US5893036A (en) * 1997-01-30 1999-04-06 Motorola, Inc. Transmission power control method
US5960333A (en) * 1997-03-31 1999-09-28 Ericsson Inc. Circuitry and method for power calibration
US6029074A (en) * 1997-05-02 2000-02-22 Ericsson, Inc. Hand-held cellular telephone with power management features
US6308080B1 (en) * 1997-05-16 2001-10-23 Texas Instruments Incorporated Power control in point-to-multipoint systems
US6366195B1 (en) * 1998-03-13 2002-04-02 Wireless Online, Inc. Power control in two-way paging systems
US6256483B1 (en) * 1998-10-28 2001-07-03 Tachyon, Inc. Method and apparatus for calibration of a wireless transmitter
EP1054518B1 (en) * 1999-05-21 2004-04-28 Alcatel Alsthom Compagnie Generale D'electricite A method for improving performances of a mobile radiocommunication system using power control

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5564075A (en) * 1993-03-09 1996-10-08 Alcatel N.V. Method and system for controlling the power at which an access packet is sent by a mobile in a mobile radio system
US5806003A (en) * 1993-07-14 1998-09-08 Nokia Telecommunications Oy Method for adjusting transmission power in a cellular radio system and a subscriber equipment
WO1997007600A1 (en) * 1995-08-18 1997-02-27 Nokia Mobile Phones Limited A method for adjusting transmit power during call set-up, and a cellular radio system
WO1997017769A2 (en) * 1995-11-10 1997-05-15 Ionica International Limited Method and apparatus for power control in a telephone system
EP0913957A1 (en) * 1997-10-31 1999-05-06 Lucent Technologies Inc. Power control for mobile wireless communication system
EP0989691A2 (en) * 1998-09-21 2000-03-29 Lucent Technologies Inc. Method and apparatus for adaptive setting of initial traffic power

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002099996A1 (en) * 2001-06-04 2002-12-12 Telefonaktiebolaget L M Ericsson (Publ) Technique for improving open loop power control in spread spectrum telecommunications systems
WO2004088876A1 (de) * 2003-04-02 2004-10-14 Siemens Aktiengesellschaft Datenübertragungsverfahren
EP1555765A3 (en) * 2004-01-15 2009-09-02 Samsung Electronics Co., Ltd. Transmission power control of a random access channel
EP1555765A2 (en) 2004-01-15 2005-07-20 Samsung Electronics Co., Ltd. Transmission power control of a random access channel
CN100362771C (zh) * 2004-07-06 2008-01-16 华为技术有限公司 一种4天线模式下物理随机接入信道的接入判决方法
KR101004266B1 (ko) * 2005-12-23 2011-01-03 퀄컴 인코포레이티드 무선 통신 네트워크에서 액세스 채널에 대한 송신 전력을결정하기 위한 방법 및 장치
WO2007120338A3 (en) * 2005-12-23 2007-12-21 Qualcomm Inc Method and apparatus for determining transmit power for an access channel in a wireless communication network
US8798661B2 (en) 2005-12-23 2014-08-05 Qualcomm Incorporated Method and apparatus for determining output transmit power for an access channel in a wireless communication network
WO2008018750A3 (en) * 2006-08-08 2009-08-20 Lg Electronics Inc Method and apparatus for transmitting message in a mobile communication system
US9264165B2 (en) 2006-08-08 2016-02-16 Lg Electronics Inc. Method and apparatus for transmitting message in a mobile communication system
WO2008022887A1 (en) * 2006-08-21 2008-02-28 Nokia Siemens Networks Gmbh & Co. Kg Method and system for interference mitigation in a mobile communications system
EP1892972A1 (en) * 2006-08-21 2008-02-27 Nokia Siemens Networks Gmbh & Co. Kg Method and system for interference mitigation in a mobile communications system
US9179479B2 (en) 2013-02-11 2015-11-03 Wipro Limited Method and system for admission control in a broadband wireless network

Also Published As

Publication number Publication date
EP1222755A1 (en) 2002-07-17
JP2003511962A (ja) 2003-03-25
AR035018A1 (es) 2004-04-14
US6487420B1 (en) 2002-11-26
CN1415141A (zh) 2003-04-30
AU1181601A (en) 2001-04-23
CN100361417C (zh) 2008-01-09

Similar Documents

Publication Publication Date Title
US6487420B1 (en) Adaptive rach power determination for mobile telecommunications user equipment unit
KR100972586B1 (ko) 적응 변조 및 코딩 기법을 위한 공통 제어 채널 업링크전력 제어
KR100265527B1 (ko) 다수의 정보 클래스를 전달하기 위한 무선 망에서의 전력 제어방법
US6650872B1 (en) Method and device for estimating a carrier-to-interference ratio in a radio communication system
EP1419588B1 (en) System for adjusting gain of a mobile station during an idle period of the serving base station
US6842441B2 (en) Data transmission in a wireless communication system
KR100800514B1 (ko) 이동 통신 시스템, 무선 기지국 제어 장치 및 그 송수신전력 제어 방법
EP1125375B1 (en) Power control method in a communication system
US20040057507A1 (en) Link estimation in a communication system
JP3759390B2 (ja) ユーザ・プローブ信号の強さを調節することによりユーザのアクセス遂行能力を改善する方法
US6853633B1 (en) Methods of providing signal parameter information using delta-modulation and related systems and terminals
EP1195920B1 (en) Method of initial transmission power determination
US7257177B2 (en) Determination of a reference value for automatic gain control of a receiver communicating with a packet switched communication network
EP1779563B1 (en) Estimation of received signal strength
US7308054B2 (en) Determination of a reference value for automatic gain control of a receiver on a general packet control channel
CN1175829A (zh) 码分多址联接网络的随机接入控制
EP1411738A1 (en) A telecommunications base station, and a method of detection by a base station of a sequence of data representing a request for call connection from a mobile
KR100313399B1 (ko) 적응적초기전력신호의발생제어방법및장치

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2000973288

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: PA/a/2002/003588

Country of ref document: MX

WWE Wipo information: entry into national phase

Ref document number: 11816/01

Country of ref document: AU

ENP Entry into the national phase

Ref country code: JP

Ref document number: 2001 530231

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 008172226

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 2000973288

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642