EP1262083A2 - Procede de transfert de connexion entre systemes - Google Patents

Procede de transfert de connexion entre systemes

Info

Publication number
EP1262083A2
EP1262083A2 EP01919169A EP01919169A EP1262083A2 EP 1262083 A2 EP1262083 A2 EP 1262083A2 EP 01919169 A EP01919169 A EP 01919169A EP 01919169 A EP01919169 A EP 01919169A EP 1262083 A2 EP1262083 A2 EP 1262083A2
Authority
EP
European Patent Office
Prior art keywords
qsearch
radio communication
communication system
quality
base 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.)
Withdrawn
Application number
EP01919169A
Other languages
German (de)
English (en)
Inventor
Michael Färber
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.)
Nokia Solutions and Networks GmbH and Co KG
Original Assignee
Siemens AG
Nokia Siemens Networks GmbH and Co KG
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=7633757&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1262083(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG, Nokia Siemens Networks GmbH and Co KG filed Critical Siemens AG
Publication of EP1262083A2 publication Critical patent/EP1262083A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

Definitions

  • the invention relates to a method for intersystem call forwarding.
  • the invention is particularly suitable for use in a mobile radio or wireless subscriber line system.
  • radio communication systems for example the second generation European mobile radio system GSM (Global System for Mobile Communications)
  • GSM Global System for Mobile Communications
  • the radio interface relates to a connection between a base station and a multiplicity of subscriber stations, the subscriber stations being, for example, mobile stations or fixed radio stations.
  • the electromagnetic waves are emitted at carrier frequencies that lie in a frequency band provided for the respective system.
  • UMTS Universal Mobile Telecommunication System
  • 3rd generation systems frequencies in the frequency band of approx. 2000 MHz are provided.
  • Two modes are provided for the third mobile radio generation UMTS, one mode denoting FDD operation (frequency division duplex) and the other mode denoting TDD operation (time division duplex). These modes are used in different frequency bands, whereby both modes support a so-called CDMA subscriber separation procedure (Code Division Multiple Access).
  • an intersystem handover is also referred to as an intersystem handover.
  • So-called multimode subscriber stations will at least support both the GSM standard and the UMTS standard at the beginning of the spread of the future UMTS mobile radio system. This is primarily important for operators who implement, for example, a nationwide coverage of an entire country with the GSM mobile radio system as well as an initially localized coverage with the UMTS mobile radio system.
  • the receiving station (RSSI - Received Signal Strengh Indicator) of up to 32 neighboring cells must be observed, and the six neighboring cells that offer the best transmission ratios must be periodically signaled to the serving base station.
  • control parameters For the GSM standard, it is currently proposed to extend the so-called control parameters in such a way that two threshold values QSEARCH and QACCEPT m are also signaled to the control parameters in the downward direction.
  • the entire control parameters are shown in FIG. 2 in a table.
  • the suggested threshold values are highlighted using the Italic font.
  • the first threshold value QSEARCH describes a lower value for the Qualltat of a received GSM signal, above which no measurements are carried out by other systems (alternate RAT).
  • the second threshold value QACCEPT describes a lower value for the signal of the further system, below which a connection forwarding to the further system is unacceptable.
  • the time-variant first signal sigl is, for example, the general signaling channel BCCH (Broadcast Control Channel) from a base station of a GSM mobile radio system, which is transmitted by the base station with an increased and constant transmission power.
  • the time-variant second signal s2g2 is, for example, one from a base station of a UMTS mobile radio signaling general signaling channel
  • BCH Beacon Channel
  • the subscriber station begins to observe the second signal s ⁇ g2 after falling below the first threshold value QSEARCH and ends this after the first threshold value QSEARCH etc. has been exceeded.
  • Threshold values QACCEPT can be excited by the second signal s ⁇ g2 as a result, for example, of a connection forwarding to the second system.
  • the invention is based on the object of specifying a method which, based on the known method, realizes a more efficient and reliable method for relaying the connection. This task is performed by the ren with the features of claim 1 and by the
  • the method according to the invention advantageously has the effect that, by means of the additional criterion, the determination of the transmission quality to a base station of the second system is carried out until a reliable knowledge of the
  • a time interval and / or a decision hysteresis is used as the criterion separated from the threshold value.
  • the method according to the invention described is used particularly advantageously in a radio communication system implemented as a mobile radio system or wireless subscriber line system.
  • 1 shows a block diagram of two adjacent radio communication systems
  • FIG. 3 shows a table according to FIG. 2 with additional control parameters according to the invention
  • FIG. 4 shows an exemplary time diagram for the method according to the prior art
  • FIG. 5 shows an exemplary time diagram for the method according to the invention.
  • FIG. 1 shows excerpts from two mobile radio systems RAT1, RAT2 as an example for radio communication systems.
  • a mobile radio system consists of a large number of mobile switching centers MSC or UMSC (Mobile Switchmg Center or UMTS-Mobile Switchmg Center), which belong to a switching network (SSS - Switchmg Subsystem) and are networked with one another or provide access to a fixed network, and one or more base station systems BSS (base station subsystem) connected to these mobile switching centers MSC, UMSC.
  • a base station system BSS in turn has at least one device BSC (Base Station Controller) or RNC (RNC - Radio Network Controller) for assigning radio resources and at least one base station BTS (Base Transceiver) connected to it
  • a base station BTS, NB can establish connections to subscriber stations UE (user equipment), such as mobile stations or other mobile and stationary terminals, via a radio interface.
  • Subscriber stations UE user equipment
  • At least one radio cell Z is formed by each base station BTS, NB.
  • the size of the radio cell is generally determined by the range of a general signaling channel BCH (Beacon Channel) or BCCH (Broadcast Control Channel), which is transmitted by the base stations BTS, NB with a higher transmission power than the traffic channels ,
  • BCH Beacon Channel
  • BCCH Broadcast Control Channel
  • several radio cells can also be supplied per base station BTS, NB.
  • the functionality of this structure can be transferred to other radio communication systems where the can be used, in particular for subscriber access networks with a wireless subscriber line.
  • the example in FIG. 1 shows a subscriber station UE, which is designed as a mobile station, and which is located in a radio cell Z of the first mobile radio system RAT1, which supports a GSM standard, and a radio cell Z of a second mobile radio system RA.T2, which has a UMTS -Standard supports, located.
  • the subscriber station UE has established a connection to the base station BTS of the first mobile radio system RAT1 shown as an example.
  • the subscriber station UE periodically evaluates transmission ratios of the radio interface to base stations surrounding it, such as, for example, the specified base station NB of the first mobile radio system RAT1, in order, for example, in the event of a deterioration in the transmission quality to the base station BTS of the second mobile radio system RAT2 or in the case of an additional setup a service to initiate a call forwarding to the base station NB of the first mobile radio system RAT1.
  • the transmission quality to the first mobile radio system RAT1 is generally poorer, for example due to the fact that the subscriber station UE is moving away from the radio coverage area of the first mobile radio system RAT1, then an additional described observation of radio cells of a parallel mobile radio system must be stimulated in order, if necessary, to Call forwarding to this system.
  • the same method is also used, for example, in hierarchical network structures if a connection between different hierarchy levels, for example from a micro cell m to a macro cell, which operate in a different frequency band, is switched on.
  • the method according to the invention can also be extended to transfer the connection between radio communication systems that use the same transmission method. This can occur, for example, in the case of a call forwarding between a GSM 900 system and a GSM 1800 system from one or two operators.
  • FIG. 3 shows an example of a table corresponding to FIG. 2 with additional control parameters according to the invention (written form Italic). These parameters are on the one hand a hysteresis QSEARCH_HYST and on the other hand a time interval QSEARCH_TIME. Each of these parameters already solves the described problem according to the prior art. A combination of the two parameters, however, advantageously allows very high flexibility for the operator due to the individual adaptability of the parameters.
  • the hysteresis QSEARCH_HYST defines a quasi additional threshold value above the threshold value QSEARCH, as can be seen from FIG. 2.
  • the width of the hysteresis QSEARCH_HYST can be selected by the operator, for example, individually for the radio cell and depending on ambient conditions.
  • Threshold value QSEARCH the subscriber station UE begins to observe the act of the second signal s2g2. The observation is continued until the act of the first signal sigl exceeds the upper limit of the hysteresis band.
  • the time interval QSEARCH TIME defines a time period within which the subscriber station UE determines at least the quality of the second signal s2g.
  • the time interval becomes QSEARCH_TIME only interrupted when the first signal sigl exceeds the upper limit of the hysteresis band.
  • the time interval can be adjusted individually, but it should be ensured in any case that it provides at least sufficient time to determine a reliable value with regard to the transmission quality.
  • the values determined are advantageously averaged over the time interval and the averaged value is compared with the threshold value QSEARCH.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de transfert de connexion entre systèmes. Selon cette invention, une qualité de transmission au niveau d'une station de base d'un premier système de radiocommunication, déterminée par une station d'abonné, est comparée à une valeur seuil. Si ladite valeur est inférieure à la valeur seuil, une détermination supplémentaire de la qualité de transmission au niveau d'une station de base d'un second système de radiocommunication est déclenchée et se poursuit jusqu'à ce qu'un critère, distinct de la valeur seuil, soit satisfait.
EP01919169A 2000-03-06 2001-03-06 Procede de transfert de connexion entre systemes Withdrawn EP1262083A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10010958A DE10010958A1 (de) 2000-03-06 2000-03-06 Verfahren zur Intersystem-Verbindungsweiterschaltung
DE10010958 2000-03-06
PCT/DE2001/000843 WO2001067784A2 (fr) 2000-03-06 2001-03-06 Procede de transfert de connexion entre systemes

Publications (1)

Publication Number Publication Date
EP1262083A2 true EP1262083A2 (fr) 2002-12-04

Family

ID=7633757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01919169A Withdrawn EP1262083A2 (fr) 2000-03-06 2001-03-06 Procede de transfert de connexion entre systemes

Country Status (5)

Country Link
US (1) US7215962B2 (fr)
EP (1) EP1262083A2 (fr)
CN (1) CN1268164C (fr)
DE (1) DE10010958A1 (fr)
WO (1) WO2001067784A2 (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9918636D0 (en) * 1999-08-06 1999-10-13 Nokia Telecommunications Oy Inter-system handover
GB2359220A (en) * 2000-02-03 2001-08-15 Orange Personal Comm Serv Ltd Handover in accordance with a network policy
DE10036141B4 (de) * 2000-07-25 2005-09-08 Siemens Ag Verfahren zur verbesserten Auswahl eines Kommunikationsnetzes für eine Station
KR100548899B1 (ko) * 2001-05-11 2006-02-02 교세라 가부시키가이샤 휴대용 통신 단말기, 무선 데이터 통신 네트워크 시스템, 무선 통신 장치와 그 방법, 및 통신 방식 전환 방법
US20030162545A1 (en) * 2002-02-22 2003-08-28 Samsung Electronics Co., Ltd. Overlapping coverage sectored/omni antenna architecture for dual standard support with handoff to backward-compatible standard during antenna/RF path/system failure
MXPA04009506A (es) * 2002-04-03 2005-01-25 Nokia Corp Habilitacion de suministro de contenido iniciado por proveedor de contenido via red de acceso de radio especifica.
JP3937968B2 (ja) * 2002-08-01 2007-06-27 株式会社日立製作所 移動通信端末装置
GB2396080B (en) * 2002-11-26 2006-03-01 Nec Technologies Improvements in standby time for dual mode mobile communication devices
JP2004304399A (ja) * 2003-03-31 2004-10-28 Nec Corp 通信端末、基地局、サーバ、ネットワークシステム及びハンドオーバ方法
JP2005117357A (ja) * 2003-10-08 2005-04-28 Nec Corp 無線通信システムの管理方法及びシステム並びに管理装置
DE10360885A1 (de) * 2003-12-23 2005-04-14 Siemens Ag Verfahren zum Betrieb einer mobilen Station für ein Funkkkom-munikationssystem, mobile Station sowie Einheit für ein Funk-kommunikationssystem
DE102004022147A1 (de) * 2004-05-05 2005-12-01 Siemens Ag Verfahren zum Durchführen von Messungen durch eine Mobilstation eines Funkkommunikationssystems sowie entsprechende mobile Station und Einheit für ein Funkkommunikationssystem
US20060276189A1 (en) * 2005-04-01 2006-12-07 Interdigital Technology Corporation Supporting inter-technology handover using IEEE 802.16 handover procedures
ES2394110T3 (es) * 2006-01-10 2013-01-21 France Telecom Procedimientos y terminales de comunicación para mejorar la transferencia de conexión entre células que pertenecen a redes diferentes
US20080232326A1 (en) * 2007-03-19 2008-09-25 Bengt Lindoff Method and Apparatus for Reducing Interference in Wireless Communication Networks by Enabling More Opportune Handover
US20090279503A1 (en) * 2008-05-11 2009-11-12 Qualcomm Incorporated Systems and methods for multimode wireless communication handoff
US9036599B2 (en) * 2008-05-11 2015-05-19 Qualcomm Incorporated Systems and methods for multimode wireless communication handoff
US8699450B2 (en) * 2008-05-11 2014-04-15 Qualcomm Incorporated Systems and methods for multimode wireless communication handoff
US8270378B2 (en) * 2008-10-03 2012-09-18 Texas Instruments Incorporated Adaptive transmissions in wireless networks
EP2517498B1 (fr) 2009-12-24 2017-03-22 Nokia Technologies Oy Procédé et appareil correspondant pour coordonner des exécutions d'un transfert intra-radio
CN102572983B (zh) * 2010-12-14 2015-07-29 ***通信集团设计院有限公司 一种移动终端进行网络切换的方法、***及装置
KR20200010613A (ko) * 2011-07-12 2020-01-30 인터디지탈 패튼 홀딩스, 인크 다중 rat 액세스 모드 동작을 위한 방법 및 장치
CN103765974B (zh) 2011-08-19 2017-12-08 交互数字专利控股公司 在移动站中使用非接入层过程来访问属于不同无线电接入技术的分量载波的方法和设备
US8705490B2 (en) 2011-12-23 2014-04-22 Verizon Patent And Licensing Inc. Handing over a user device from one technology to another
US9756543B2 (en) 2013-03-01 2017-09-05 Apple Inc. Application-based radio-access technology switching
US9386497B1 (en) * 2013-09-06 2016-07-05 Sprint Spectrum L.P. Managing a wireless data communication session
KR102087403B1 (ko) * 2013-12-09 2020-03-10 삼성전자주식회사 무선 통신 시스템에서 핸드오버 절차 제어 장치 및 방법
US10776520B2 (en) * 2015-09-14 2020-09-15 Northwestern University System and method for proxy-based data access mechanism in enterprise mobility management

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9012044D0 (en) * 1990-05-30 1990-07-18 British Telecomm Cellular radio
US5483669A (en) * 1993-09-09 1996-01-09 Hughes Aircraft Company Dynamic thresholding for mobile assisted handoff in a digital cellular communication system
US5697055A (en) * 1994-10-16 1997-12-09 Qualcomm Incorporated Method and apparatus for handoff between different cellular communications systems
EP0762791A3 (fr) * 1995-08-31 1999-05-06 Hagenuk Gmbh Procédé pour la commutation automatique du mode de fonctionnement d'un téléphone mobile multi-mode
US5848063A (en) * 1996-05-23 1998-12-08 Qualcomm Incorporated Method and apparatus for hard handoff in a CDMA system
US6112093A (en) * 1996-07-03 2000-08-29 Telefonaktiebolaget Lm Ericsson Radio communication system and method for analog and digital traffic channel allocation using a second higher threshold when allocating a digital channel
US6233456B1 (en) * 1996-09-27 2001-05-15 Qualcomm Inc. Method and apparatus for adjacent coverage area handoff in communication systems
JP2959499B2 (ja) * 1996-11-29 1999-10-06 日本電気株式会社 無線通信装置
US6021328A (en) * 1996-12-19 2000-02-01 Northern Telecom Limited Radio link quality handoff trigger
FI106287B (fi) * 1997-09-17 2000-12-29 Nokia Mobile Phones Ltd Parannettu menetelmä tukiaseman vaihtamiseksi
GB9810394D0 (en) * 1998-05-14 1998-07-15 Simoco Europ Limited Radio communications system
GB2346295B (en) * 1998-07-24 2003-08-20 Toshiba Kk CDMA mobile terminal device
FI108200B (fi) * 1998-09-14 2001-11-30 Nokia Mobile Phones Ltd Yhteyden vaihto matkaviestinverkkojen välillä
US6363260B1 (en) * 1999-07-07 2002-03-26 Qualcomm, Incorporated System and method for edge of coverage detection in a wireless communication device
US6701149B1 (en) * 1999-07-19 2004-03-02 Nortel Networks Limited Handoff framework to support real-time delay-critical services in a next generation network
EP1077556B1 (fr) * 1999-08-18 2003-07-30 Alcatel Communication de données entre un premier centre de commutation mobile d'un premier système de transmission sans fil et un deuxième centre de commutation mobile d'un deuxième système de transmission sans fil
EP1081979A1 (fr) * 1999-08-31 2001-03-07 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Dispositif d'abonné, moyens de commande de réseau et méthode de déclenchement des mesures d'inter-fréquence dans un système de communication mobile
EP1081977A1 (fr) * 1999-08-31 2001-03-07 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Dispositif d'abonné, moyens de commande de réseau et méthode de déclenchement des mesures d'inter-fréquence dans un système de communication mobile
US6845238B1 (en) * 1999-09-15 2005-01-18 Telefonaktiebolaget Lm Ericsson (Publ) Inter-frequency measurement and handover for wireless communications
US6804532B1 (en) * 2000-12-22 2004-10-12 Cisco Technology, Inc. System and method for re-routing communications based on wireless communication link quality

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0167784A2 *

Also Published As

Publication number Publication date
US20030050063A1 (en) 2003-03-13
CN1416660A (zh) 2003-05-07
WO2001067784A3 (fr) 2002-03-14
DE10010958A1 (de) 2001-09-20
US7215962B2 (en) 2007-05-08
WO2001067784A2 (fr) 2001-09-13
CN1268164C (zh) 2006-08-02

Similar Documents

Publication Publication Date Title
EP1262083A2 (fr) Procede de transfert de connexion entre systemes
EP1258163B1 (fr) Procede de retransmission d'une connexion intersysteme
DE3856308T2 (de) Zellulares Funktelefonsystem mit Schutz gegen Anrufausfälle
DE19882331B3 (de) System und Verfahren zum dynamischen Erhöhen der Kapazität eines Codeunterteilungsmehrfachzugriffs- (Code Division Multiple Access) Funktelekommunikationsnetzwerks
DE69618238T2 (de) Verfahren zur einstellung der sendeleistung während des anrufaufbaus, und zellulares funksystem
DE69637034T2 (de) Mehrband-Mobiltelefonsystem
DE60035222T2 (de) Sendeleistungsregelung einer mobilstation
DE60301122T2 (de) Verfahren zum Durchführen einer Handover- oder Wiederwahlprozedur
DE60129297T2 (de) Optimierter schlafmodusbetrieb
DE60031843T2 (de) Verfahren zur einteilung der messung von signalleistungspegeln in einem endgerät eines zellularen netzes sowie endgerät
EP1262081B1 (fr) Procede pour commander un transfert entre systemes
DE69918857T2 (de) Bestimmung des weiterreichens und einstellung der leistungsregelung in mobilkommunikationssystemen mit frequenzspringen
DE69834172T2 (de) Übergabe in einem mobilfunksystem
EP1088406B1 (fr) Procede et systeme pour la regulation de la puissance de transmission d'une station mobile d'un systeme radiotelephonique mobile
EP1090526B1 (fr) Commande d'acces dans un systeme de radiotelecommunication
DE69925382T2 (de) Verfahren und system zur steuerung von "hard" und "soft" handoff in funkkommunikationssystemen
DE19850654C1 (de) Verfahren und Basisstation zur Funktionsprüfung eines Sende- und Empfangspfads
EP1608199B1 (fr) Procédé de signalisation d'informations sur les cellules radio voisines dans un système de radiocommunication
WO2003069940A1 (fr) Procede de selection de cellule radio
DE19823523C1 (de) Anordnung zur Funktionsprüfung von Funkstationen eines Funk-Kommunikationssystems
WO2004032549A2 (fr) Preparation d'un transfert de communication intersysteme
DE19955838A1 (de) Verfahren zur Steuerung einer Verbindungsübergabe in einem Funk-Kommunikationssystem
DE19911146C2 (de) Verfahren zur Sendeleistungsregelung in einem Funk-Kommunikationssystem
EP1090516B1 (fr) Procede de regulation de la grandeur d'une cellule radio, et station de base
WO2008055774A1 (fr) Réacheminement d'informations utiles et de contrôle lors d'un transfert continu

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020801

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT TR

17Q First examination report despatched

Effective date: 20060818

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NOKIA SIEMENS NETWORKS S.P.A.

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20080911