WO1997008909A1 - Procede de lissage de la charge de trafic d'une station fixe dans un systeme de radiocommunications cellulaire et systeme de radiocommunications cellulaire - Google Patents

Procede de lissage de la charge de trafic d'une station fixe dans un systeme de radiocommunications cellulaire et systeme de radiocommunications cellulaire Download PDF

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Publication number
WO1997008909A1
WO1997008909A1 PCT/FI1995/000466 FI9500466W WO9708909A1 WO 1997008909 A1 WO1997008909 A1 WO 1997008909A1 FI 9500466 W FI9500466 W FI 9500466W WO 9708909 A1 WO9708909 A1 WO 9708909A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
pilot signal
cellular radio
radio system
coverage area
Prior art date
Application number
PCT/FI1995/000466
Other languages
English (en)
Inventor
Hannu HÄKKINEN
Seppo Granlund
Seppo HÄMÄLÄINEN
Original Assignee
Nokia Telecommunications Oy
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
Application filed by Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Priority to PCT/FI1995/000466 priority Critical patent/WO1997008909A1/fr
Priority to AU32604/95A priority patent/AU3260495A/en
Publication of WO1997008909A1 publication Critical patent/WO1997008909A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/06—Hybrid resource partitioning, e.g. channel borrowing

Definitions

  • the invention is applicable in interference- limited cellular radio systems, especially in a CDMA system.
  • CDMA technology a narrow-band data signal of a user is modulated to a relatively wide band by a spreading code having a broader band than the data signal.
  • bandwidths such as 1.25 MHz, 10 MHz and 50 MHz have been used.
  • a spreading code usually consists of a long pseudorandom bit sequence. The bit rate of the spreading code is much higher than that of the data signal, and the bits of the spreading code are called chips to distinguish them from data bits and data symbols. Each data symbol of the user is multiplied by all the chips of the spreading code.
  • the narrow-band data signal thus spreads to the frequency band used by the spreading code.
  • Each user has a separate spreading code. Several users transmit simultaneously on the same frequency band, and the data signals are distinguished from one another in the receivers on the basis of the pseudorandom spreading code.
  • the subscriber terminal are typically realized by means of a processor.
  • the subscriber terminal also comprises means 220 and 226 for measuring the strength of a pilot signal it has received from the base station.
  • the detector block of the receiver usually realized according to the rake principle, typically comprises several receiver branches, at least one of which is a so-called searcher branch which measures especially the strengths of the pilot signals.
  • the subscriber terminal selects and, if necessary, changes the base station with which it communicates.

Abstract

L'invention se rapporte à un procédé de lissage de la charge de trafic d'une station fixe dans un système de radiocommunications cellulaire ainsi qu'à un système de radiocommunications cellulaire. Ledit système de radiocommunications cellulaire comporte dans chaque cellule au moins une station fixe et un certain nombre d'équipements terminaux d'abonnés. Lesdites stations fixes mesurent leur propre charge de trafic et émettent un signal pilote dont le niveau de puissance est mesuré par les équipements terminaux des abonnés. Les stations fixes et les équipements terminaux des abonnés sont interconnectés par l'intermédiaire de leurs voies de trafic. Lorsqu'une station fixe supporte une charge de trafic élevée, elle réduit sa couverture en réduisant la puissance d'émission du signal pilote ou en intervenant sur la mesure de puissance du signal pilote effectuée au niveau de l'équipement terminal de l'abonné.
PCT/FI1995/000466 1995-08-31 1995-08-31 Procede de lissage de la charge de trafic d'une station fixe dans un systeme de radiocommunications cellulaire et systeme de radiocommunications cellulaire WO1997008909A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/FI1995/000466 WO1997008909A1 (fr) 1995-08-31 1995-08-31 Procede de lissage de la charge de trafic d'une station fixe dans un systeme de radiocommunications cellulaire et systeme de radiocommunications cellulaire
AU32604/95A AU3260495A (en) 1995-08-31 1995-08-31 A method of levelling a traffic load of a base station in a cellular radio system, and a cellular radio system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI1995/000466 WO1997008909A1 (fr) 1995-08-31 1995-08-31 Procede de lissage de la charge de trafic d'une station fixe dans un systeme de radiocommunications cellulaire et systeme de radiocommunications cellulaire

Publications (1)

Publication Number Publication Date
WO1997008909A1 true WO1997008909A1 (fr) 1997-03-06

Family

ID=8556623

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1995/000466 WO1997008909A1 (fr) 1995-08-31 1995-08-31 Procede de lissage de la charge de trafic d'une station fixe dans un systeme de radiocommunications cellulaire et systeme de radiocommunications cellulaire

Country Status (2)

Country Link
AU (1) AU3260495A (fr)
WO (1) WO1997008909A1 (fr)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311191A (en) * 1996-03-11 1997-09-17 Nec Corp Cell size adjustment in a cellular communication system
WO1998052375A2 (fr) * 1997-05-13 1998-11-19 Nokia Networks Oy Procede de passage
EP0892570A2 (fr) * 1997-06-27 1999-01-20 Nec Corporation Système de communication radio mobile et méthode de contrÔle de circuit radio associée
WO1999067963A1 (fr) * 1998-06-23 1999-12-29 Siemens Aktiengesellschaft Procede de regulation de la grandeur d'une cellule radio, et station de base
WO2000038348A1 (fr) * 1998-12-18 2000-06-29 Nokia Networks Oy Procede de commande d'une charge de trafic dans un reseau de telecommunications
EP1091610A1 (fr) * 1999-09-29 2001-04-11 Lucent Technologies Inc. Système et méthode pour la régulation de surcharge
GB2356531A (en) * 1999-11-17 2001-05-23 Vodafone Ltd Load shedding in a CDMA network
EP1126735A1 (fr) * 2000-02-15 2001-08-22 Lucent Technologies Inc. Système de communication mobile
WO2001078434A1 (fr) * 2000-04-12 2001-10-18 Queen Mary & Westfield College Commande intelligente de ressources radio dans un reseau sans fil
WO2000008869A3 (fr) * 1998-08-04 2001-11-08 Samsung Electronics Co Ltd Procede et appareil de communication en mode canal dans un systeme de communication cdma
EP1168655A2 (fr) * 2000-06-14 2002-01-02 Nec Corporation Procédé de commande de puissance dans un système de communication radio AMDC
WO2002082843A1 (fr) * 2001-04-06 2002-10-17 Nokia Corporation Procede de reglage de la capacite d'une cellule
AU753847B2 (en) * 1998-08-04 2002-10-31 Samsung Electronics Co., Ltd. Signal transmitting and receiving method and device
EP1292164A1 (fr) * 2001-09-10 2003-03-12 NTT DoCoMo, Inc. Eviter de la déconnexion d'un appel quand le rayon de cellule est réduite
US6539206B1 (en) 1998-03-26 2003-03-25 Hyundai Electronics Ind. Co., Ltd. Pilot signal strength adjusting method in mobile communication system
WO2003036815A1 (fr) * 2001-10-22 2003-05-01 Nokia Corporation Autosyntonisation de puissance de canal pilote
WO2004105420A1 (fr) * 2003-05-16 2004-12-02 International Business Machines Corporation Procede et appareil de partage de charge dans des reseaux d'acces sans fil reposant sur un ajustement de puissance de transmission dynamique de points d'acces
EP1704659A1 (fr) * 2004-01-08 2006-09-27 Interdigital Technology Corporation Procede et appareil de communication sans fil, pour l'optimisation des performances des points d'acces
US7286486B2 (en) 2004-01-08 2007-10-23 Interdigital Technology Corporation Wireless communication method and apparatus for compensating for interference
US7466983B2 (en) 2000-09-01 2008-12-16 Telefonaktiebolaget L M Ericsson (Publ) Overload protection in packet communication networks
EP1655861A3 (fr) * 2004-11-05 2011-05-04 NTT DoCoMo, Inc. station de base et procédé de contrôle de la puissance de transmission

Citations (4)

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WO1993012587A1 (fr) * 1991-12-13 1993-06-24 Nokia Telecommunications Oy Systeme radio cellulaire
US5276907A (en) * 1991-01-07 1994-01-04 Motorola Inc. Method and apparatus for dynamic distribution of a communication channel load in a cellular radio communication system
EP0615395A1 (fr) * 1993-03-11 1994-09-14 Hitachi, Ltd. Réseau de radio-communication mobile avec distribution du trafic par changement de dimensions des cellules
US5428817A (en) * 1992-06-09 1995-06-27 Nec Corporation Mobile communication system having variable coverage areas

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5276907A (en) * 1991-01-07 1994-01-04 Motorola Inc. Method and apparatus for dynamic distribution of a communication channel load in a cellular radio communication system
WO1993012587A1 (fr) * 1991-12-13 1993-06-24 Nokia Telecommunications Oy Systeme radio cellulaire
US5428817A (en) * 1992-06-09 1995-06-27 Nec Corporation Mobile communication system having variable coverage areas
EP0615395A1 (fr) * 1993-03-11 1994-09-14 Hitachi, Ltd. Réseau de radio-communication mobile avec distribution du trafic par changement de dimensions des cellules

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5898682A (en) * 1996-03-11 1999-04-27 Nec Corporation Radio channel control apparatus used in a CDMA cellular system and capable of changing cell size
GB2311191A (en) * 1996-03-11 1997-09-17 Nec Corp Cell size adjustment in a cellular communication system
GB2311191B (en) * 1996-03-11 2000-11-22 Nec Corp Control apparatus for use in a cellular system
US6445924B1 (en) 1997-05-13 2002-09-03 Nokia Networks Oy Method and apparatus for implementing handover in a mobile communications system
WO1998052375A2 (fr) * 1997-05-13 1998-11-19 Nokia Networks Oy Procede de passage
WO1998052375A3 (fr) * 1997-05-13 1999-02-04 Nokia Telecommunications Oy Procede de passage
EP0892570A3 (fr) * 1997-06-27 2003-07-02 Nec Corporation Système de communication radio mobile et méthode de contrôle de circuit radio associée
EP0892570A2 (fr) * 1997-06-27 1999-01-20 Nec Corporation Système de communication radio mobile et méthode de contrÔle de circuit radio associée
US6539206B1 (en) 1998-03-26 2003-03-25 Hyundai Electronics Ind. Co., Ltd. Pilot signal strength adjusting method in mobile communication system
WO1999067963A1 (fr) * 1998-06-23 1999-12-29 Siemens Aktiengesellschaft Procede de regulation de la grandeur d'une cellule radio, et station de base
US7653040B1 (en) 1998-08-04 2010-01-26 Samsung Electronics Co., Ltd Channel communication apparatus and method in CDMA communication system
CN1383691B (zh) * 1998-08-04 2013-04-17 三星电子株式会社 码分多址通信系统中的信道通信设备和方法
WO2000008869A3 (fr) * 1998-08-04 2001-11-08 Samsung Electronics Co Ltd Procede et appareil de communication en mode canal dans un systeme de communication cdma
US7904104B2 (en) 1998-08-04 2011-03-08 Samsung Electronics Co., Ltd. Channel communication apparatus and method in CDMA communication system
AU753847B2 (en) * 1998-08-04 2002-10-31 Samsung Electronics Co., Ltd. Signal transmitting and receiving method and device
EP2007123A1 (fr) 1998-08-04 2008-12-24 Samsung Electronics Co., Ltd. Appareil et appareil de communication en mode canal dans un système de communication cdma
US6671512B2 (en) 1998-12-18 2003-12-30 Nokia Corporation Method for traffic load control in a telecommunication network
WO2000038348A1 (fr) * 1998-12-18 2000-06-29 Nokia Networks Oy Procede de commande d'une charge de trafic dans un reseau de telecommunications
US6415153B1 (en) 1999-09-29 2002-07-02 Lucent Technologies Inc. System and method for aggregate overload control
EP1091610A1 (fr) * 1999-09-29 2001-04-11 Lucent Technologies Inc. Système et méthode pour la régulation de surcharge
KR100759719B1 (ko) * 1999-09-29 2007-09-20 루센트 테크놀러지스 인크 총 과부하 제어를 위한 시스템과 방법
GB2356531A (en) * 1999-11-17 2001-05-23 Vodafone Ltd Load shedding in a CDMA network
GB2356531B (en) * 1999-11-17 2003-11-05 Vodafone Ltd CDMA mobile communications
EP1126735A1 (fr) * 2000-02-15 2001-08-22 Lucent Technologies Inc. Système de communication mobile
WO2001078434A1 (fr) * 2000-04-12 2001-10-18 Queen Mary & Westfield College Commande intelligente de ressources radio dans un reseau sans fil
US7570956B2 (en) 2000-04-12 2009-08-04 Queen Mary & Westfield College Intelligent control of radio resources in a wireless network
EP1168655A2 (fr) * 2000-06-14 2002-01-02 Nec Corporation Procédé de commande de puissance dans un système de communication radio AMDC
US7236467B2 (en) 2000-06-14 2007-06-26 Nec Corporation CDMA communication system with pilot power control unit
EP1168655A3 (fr) * 2000-06-14 2009-06-17 Nec Corporation Procédé de commande de puissance dans un système de communication radio AMDC
US7466983B2 (en) 2000-09-01 2008-12-16 Telefonaktiebolaget L M Ericsson (Publ) Overload protection in packet communication networks
US7492740B2 (en) 2001-04-06 2009-02-17 Nokia Corporation Method of adjusting the capacity of a cell
WO2002082843A1 (fr) * 2001-04-06 2002-10-17 Nokia Corporation Procede de reglage de la capacite d'une cellule
US7292860B2 (en) 2001-09-10 2007-11-06 Ntt Docomo, Inc. Cell formation control method, a mobile communications system, and a base station and a mobile station used therein
EP1292164A1 (fr) * 2001-09-10 2003-03-12 NTT DoCoMo, Inc. Eviter de la déconnexion d'un appel quand le rayon de cellule est réduite
US7110769B2 (en) 2001-09-10 2006-09-19 Ntt Docomo, Inc. Cell formation control method, a mobile communications system, and a base station and a mobile station used therein
WO2003036815A1 (fr) * 2001-10-22 2003-05-01 Nokia Corporation Autosyntonisation de puissance de canal pilote
CN100456868C (zh) * 2003-05-16 2009-01-28 国际商业机器公司 根据接入点的动态的发射功率调节在无线接入网络中负载均分的方法和装置
WO2004105420A1 (fr) * 2003-05-16 2004-12-02 International Business Machines Corporation Procede et appareil de partage de charge dans des reseaux d'acces sans fil reposant sur un ajustement de puissance de transmission dynamique de points d'acces
US7162250B2 (en) 2003-05-16 2007-01-09 International Business Machines Corporation Method and apparatus for load sharing in wireless access networks based on dynamic transmission power adjustment of access points
US7286486B2 (en) 2004-01-08 2007-10-23 Interdigital Technology Corporation Wireless communication method and apparatus for compensating for interference
EP1704659A4 (fr) * 2004-01-08 2007-08-08 Interdigital Tech Corp Procede et appareil de communication sans fil, pour l'optimisation des performances des points d'acces
EP1704659A1 (fr) * 2004-01-08 2006-09-27 Interdigital Technology Corporation Procede et appareil de communication sans fil, pour l'optimisation des performances des points d'acces
EP1655861A3 (fr) * 2004-11-05 2011-05-04 NTT DoCoMo, Inc. station de base et procédé de contrôle de la puissance de transmission

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