EP1358777A1 - Procede et dispositif de localisation de stations radio pouvant porter des services de donnees de paquets dans un systeme de communication - Google Patents

Procede et dispositif de localisation de stations radio pouvant porter des services de donnees de paquets dans un systeme de communication

Info

Publication number
EP1358777A1
EP1358777A1 EP02715448A EP02715448A EP1358777A1 EP 1358777 A1 EP1358777 A1 EP 1358777A1 EP 02715448 A EP02715448 A EP 02715448A EP 02715448 A EP02715448 A EP 02715448A EP 1358777 A1 EP1358777 A1 EP 1358777A1
Authority
EP
European Patent Office
Prior art keywords
station
network
location
radio
packet data
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Withdrawn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
EP02715448A
Other languages
German (de)
English (en)
Inventor
Carsten Ball
Ralf Krannich
Christian Mucke
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE2001105678 external-priority patent/DE10105678A1/de
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP02715448A priority Critical patent/EP1358777A1/fr
Publication of EP1358777A1 publication Critical patent/EP1358777A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H04W74/06—Scheduled access using polling

Definitions

  • the invention relates to a method for determining the location of packet data service-capable radio stations in a communication system with the main features of claim 1 and a communication system with devices for performing such a method.
  • information for example voice, picture information or other data
  • a radio interface between the sending and receiving station (base station or subscriber station).
  • the electromagnetic waves are emitted at carrier frequencies that lie in the frequency band provided for the respective system.
  • TD / CDMA Time / Code Division Multiple Access
  • UMTS Universal Mobile Telecommunication System
  • 3rd generation systems frequencies in the frequency band of approx 2000 MHz provided.
  • Novel data services such as the packet data service GPRS (General Packet Radio Service) and its extension EDGE / EGPRS (Enhanced Data Rates for.) are currently used in existing mobile radio networks based on the GSM standard (GSM: Global System for Mobile Communications) with frequencies between 400 MHz and 2000 MHz GSM Evolution / Enhanced GPRS) introduced.
  • GSM Global System for Mobile Communications
  • the transmission in the mobile radio network does not take place in a connection-oriented or circuit-switched manner, but in the form of packet data. This type of transmission makes better use of the given transmission resources in the mobile radio network, for example by multiplexing.
  • TDMA Time Division Duplex
  • GSM Global System for Mobile Communications
  • TDD-UMTS Time Division Duplex
  • DL Downlmk
  • UL Uplmk
  • a packet data traffic channel PDTCH Packet Data Traffic Channel
  • PDTCH Packet Data Traffic Channel
  • the packet data traffic channels are unidirectional.
  • a transmission takes place either m uplink (UL) for the packet data transmission from the subscriber station to the base station or m downlink (DL) for the packet data transmission from the base station to the subscriber station.
  • a packet data traffic channel can be assigned to a subscriber for static channel allocation (fixed allocation according to GSM 04.60) for a specific time interval or with dynamic channel allocation (dynamic allocation according to GSM 04.60) to several subscribers at the same time, ie several subscribers are assigned to this packet data Traffic channel supplied (multiplex g). This applies to the up and down connection independently of each other.
  • location determination services are known, which are also used for subscriber stations for packet data-capable (GPRS, EDGE) mobile radio services, GSM mobile radio networks.
  • GPRS packet data-capable
  • EDGE packet data-capable
  • circuit-switched services there are already a large number of methods in the standard, such as TA (Timing Advance), E-OTD (Enhanced Observed Time Difference), GPS (Global Positioning System), etc.
  • TA receives for example the responsible mobile station
  • SMLC Serving Mobile Location Center
  • a request for the current position of a particular subscriber station If the subscriber station is idle at this time, it is addressed from the network or a paging w is carried out, whereupon the network assigns a channel to the subscriber station. In the reserved or switched state (“dedicated mode *), the subscriber station is already active on one channel.
  • the responsible mobile station localization center requests the TA currently used in the base station system and optionally the measurement report last sent by the subscriber station (measurement report) from the base station system. After forwarding this data to the responsible mobile station localization center, the position of the subscriber station is calculated there according to known methods and the position result is then forwarded to the requesting unit. There are also methods in which, for example, the subscriber station independently continuously calculates its position and communicates it to the network on the basis of inquiries, or methods which determine the location by means of an external device
  • Hardware e.g. a so-called location determination unit (LMU).
  • LMU location determination unit
  • a disadvantage of such methods is that the network must assign dedicated channels to the subscriber station, for example for querying position-relevant measurement data, which is ultimately disadvantageous for the cell capacity. Furthermore, only one subscriber station at a time can be queried. Upon request, the base station system must contact the subscriber station each time before it can deliver the measurement data relevant to the position to the responsible mobile station localization center. Without prior The question is therefore not known to the network in the case of existing location determination methods (LCS: location service) the position of a subscriber station.
  • LCS location service
  • known calculation methods are used to determine the location of the subscriber stations, for example in the TA method, runtime values between the subscriber station and the supplying base station.
  • the object of the invention is to propose an improved method for determining the location of subscriber-side stations capable of packet data service in a communication system or a device for carrying out such a method.
  • This method advantageously means that the network does not have to assign dedicated channels to the subscriber station, so that the cell capacity is protected. In addition, not only individual subscriber stations can be queried one after the other, but also several at the same time.
  • At least one network-side device which is preferably a component of the base station system, holds location information about the subscriber stations in its area, so that they immediately respond to inquiries without having to contact the corresponding subscriber station again must provide the position of this subscriber station or the position-relevant measurement data.
  • a method for GPRS / EGPRS-capable subscriber stations in which the base station system is always informed about the location of the subscriber stations or the position-relevant measurement data in its cells, so that the base station system requests higher levels / layers without triggering the can answer the desired subscriber station immediately. Furthermore, by setting trigger points - for example by defining a specific location area in its coverage area - the network can automatically inform function units immediately downstream, without request, when a subscriber station enters this area, stays there or leaves it.
  • the SMLC functionality can be integrated on the network side or in the base station system or remotely located in a separate facility (physical or stand-alone SMLC).
  • the network can provide a complete radio field planning map and create a highly accurate distribution map of the subscriber stations in the cells.
  • the method comes without additional new measuring devices, i.e. even without additional new modules or hardware.
  • a preferred basis of the method is based on the fact that GPRS / EGPRS-capable subscriber stations are in principle permanently logged on to the network and are known to it (GPRS attached).
  • the network can specifically request the subscriber station or, via broadcast system information, all subscriber stations in the cell to periodically send messages from which the network determines the position of the subscriber station.
  • the network can therefore set trigger points at a known subscriber station position at which the When entering / leaving a certain cell area, for example a shopping center, the network can immediately send information, for example advertising, special offers, kmo programs, etc. to the subscriber station, for example by means of SMS (Short Message Service).
  • SMS Short Message Service
  • the method is advantageously based entirely on known signaling of the GSM specifications, which, however, are used very advantageously and in a completely new combination, e.g. So-called “Network Controlled Cell Reselection", “Network Controlled Measurement Reports” and “Extended Measurement Reports”
  • the method works both with a subscriber station in the idle state and in the operating state (idle or packet transfer mode).
  • GPRS / EGPRS The advantage of using GPRS / EGPRS is that no dedicated channels have to be assigned. Instead, the subscriber stations provide periodic measurement reports (measurement reports), which advantageously always occupy only a 20 ms radio block or a few radio blocks for longer messages on a packet data channel (PDCH), or the subscriber stations are switched to so-called shared channels if required ( shared channels), where they multiplex their data with other subscriber stations.
  • PDCH packet data channel
  • DTM dual transfer mode
  • E-OTD GPS based on circuit-switched services
  • LCS location determination service
  • the algorithms used in the simplest exemplary embodiment are known process elements which are used to determine and report the interference level in a cell at the location of the subscriber station MS, for the cell change or optionally packet / data retrieval requests. However, these three can also be used for location determination by means of the method described.
  • the method can be applied to all GPRS / EGPRS-capable subscriber stations in the cell. To reduce the load in the network, however, only individual participants can be operated. This can also be used to make this service available only for a fee.
  • Fig. 2-4 The messages available in the GSM standard for the measurement reports, which can be used to carry out a method for determining the location of a GPRS-capable subscriber station.
  • a mobile radio system as an example of a radio communication system consists of a plurality of mobile switching centers MSC and service and access network nodes SGSN (Serving GPRS Support Node) which are networked with one another or have access to a fixed network PSTN or a packet data network Establish PDN. Furthermore, these mobile switching centers MSC are each connected to at least one base station control device BSC / one device RNM for allocating radio resources. Each of these devices in turn enable a connection to at least one base station BTS. Such a base station BTS can establish a connection to subscriber-side or subscriber stations, for example mobile stations MS or other mobile and stationary terminals, via a radio interface. The base stations and the devices controlling them form a base station system (BSS / Base Station System).
  • BSS Base Station System
  • Each base station BTS forms at least one radio cell Z, within which communication with subscriber stations MS, MSI, ... is possible.
  • a plurality of radio cells Z are also supplied per base station BTS.
  • the areas of adjacent radio cells typically overlap, so that a change from the area of one radio cell Z to the area of another radio cell Z is possible without problems.
  • FIG. 1 shows, by way of example, existing connections VI, V2, V3 for the transmission of useful information and signaling information between mobile subscriber stations MS and a base station BTS and a request for resource allocation or a short confirmation message in an access channel (P) RACH ((packet ) Random Access CHannel) represented by another mobile station MS.
  • P access channel
  • RACH Packet ) Random Access CHannel
  • BCCH Broadcast Control CHannel
  • An operation and maintenance center OMC implements control and maintenance functions for the mobile radio system or for parts thereof.
  • the functionality of this structure can be transferred to other radio communication systems, in particular for subscriber access networks with a wireless subscriber line.
  • a method for determining the location of one or more subscriber stations MS for the packet data system GPRS / EGPRS in transmission mode (“transfer mode”) with active packet data transmission (temporary block flow: TBFs) and in the idle state (“idle Mode ”) can be applied.
  • a data list X is created for the registered subscriber stations MS in the area of the base station control device BSC or possibly also in the supporting network node for a serving packet data network (SGSN: Serv GPRS Support Node) or in the SMLC, the location for the respective subscriber stations MS , Timmg Advance TA in the respective cell Z (Servmg-Cell), RXLEV values (RXLEV: REceive LEVel / receive level) and interference values can be saved.
  • control messages and control mechanisms which are known per se and which are known per se can be used, but currently (see, for example, GSM 04.60, GSM 05.08) are used for entirely different purposes in each case.
  • the messages transmitted from the subscriber station to the network and their contents are outlined in FIGS. 2-4.
  • Exemplary algorithm sequences can be provided in particular for the registration of a subscriber station capable of packet data service and the external request for a position determination.
  • a subscriber station for GPRS / EGPRS logs on to the network, its position is to be determined and stored continuously, which is why the subscriber station is asked to periodically send the measurement reports.
  • the network evaluates these and the TA measured values and calculates the position of the subscriber station MS.
  • the subscriber station MS may also be moved to the neighboring cells by "NC Cell Reselection". For the operation of incoming external subscriber station position requests, if the position of the subscriber station MS in the network is known with sufficient accuracy, this information can be transmitted directly from the base station system BSS. Otherwise, the subscriber station MS must be polled in order to first determine the position or to improve the position information sufficiently.
  • NC measurement reports or network-initiated measurement reports are sent periodically from dedicated or all subscriber stations MS of cell Z to the network-side devices, if this is done by the base station BTS via a radio or message channel communicated requirement, e.g. the PSI 5 Packet_System_Informat ⁇ on_Message is required (NC_CONTROL_ORDER field).
  • the period of such transmissions can in the currently known system by means of appropriate broadcast / broadcast parameters for subscriber stations MS in idle mode (idle mode) (NC_Reportmg_Pe ⁇ od) _ or.
  • N transmission mode
  • TLLI Temporal Logical Link Identifier
  • RXLEV_SERVING CELL reception level
  • SINRFERENCE_SERVING CELL interference
  • EXTENDED Measurement Reports can periodically be sent to subscriber stations MS in idle mode (EXT_CONTROL_ORDER). The period can currently be set between 60 and 7,680 seconds.
  • this report or report contains the interference level at the location of the subscriber station MS on all eight time slots currently (I_LEVEL_TN0 ... 7) and the reception field strength values RXLEV of the neighboring cells (RXLEV_N) at the location of the subscriber station MS.
  • the neighboring cell list to be measured (ARFCN, BSIC, 7) is previously assigned to the subscriber station MS by the network (e.g. currently: (BA (GPRS), NC_FREQUENCY_LIST, EXT_FREQUENCY_LIST)).
  • NC measurement reports or extended measurement reports should be periodically sent to the network instead of all only from certain subscriber stations MS in cell Z.
  • a restriction to the transmission of the location information of only individual subscriber stations MS is advantageous if e.g. Too many subscriber stations MS are in a cell, so that there could possibly be an overload situation, or if not all subscriber stations MS are to use the location determination service (LCS), for example because the subscribers of the corresponding subscriber stations MS are not registered and approved for this service are.
  • LCS location determination service
  • the period for communicating the position-relevant measurement data to the network can be set differently for different subscriber stations MS, which leads to certain quality differences in the accuracy. Moving subscriber stations MS can thus be instructed to send their position-relevant measurement data more often than subscriber stations MS that do not move at all or only slowly.
  • the subscriber station MS advantageously communicates the measurement data to the network in idle mode by first performing an access to the network and requesting one or more radio / radio blocks.
  • the base station BTS can immediately see the time advance (timing advance TA) and thus the distance between the subscriber station MS and the base station Determine BTS.
  • timing advance TA time advance
  • the location of the subscriber station MS can be calculated more precisely, however, as a rule, by means of the additionally available values of the reception field strength RXLEV of the neighboring cells, generally known electromagnetic propagation laws and the known positions of the base stations BTSn of the neighboring cells Zn.
  • network planning data e.g. predicted signal field strengths in the coverage area of the network
  • the location of the subscriber station MS can be determined more precisely by an automated comparison with the map.
  • an iterative method can be used, since the method described here calculates a highly precise level / interference map, which in turn can then serve as input for further calculations above.
  • the linking of the data to the subscriber station MS and their storage in a network-side device such as the memory X of the base station control unit BSC (or in packet networks the so-called Servmg GPRS Support Node (SGSN) or the SMLC) is preferably carried out using identification indicators such as the known TLLI (Temporary Logical Link Identifier), which is unique for each subscriber station MS and is contained in the above-mentioned messages.
  • TLLI Temporary Logical Link Identifier
  • the network or its base station control device BSC can use the subscriber station MS in the idle state (idle mode) by means of a network-controlled line shift ("Network Controlled Cell Reselection") one after the other from the cell Z serving the subscriber station (Servmg Cell) m the neighboring cells Zn move, in whose reception area the subscriber station MS is also located.
  • the currently known message "Package_Cell_Change_Order" can be used for this.
  • the use of services or methods of the GPRS service means that no interruption of existing services (“service interrupt”) is required, since no data is sent in idle mode.
  • service interrupt When using the method for subscriber stations MS in the transmission mode (transfer mode), however, data can be lost which must be retransmitted later or repeated.
  • a subscriber station MS to be shifted according to the method should always first be pushed into the neighboring cell (s) with the greatest reception field strength RXLEV.
  • By moving the network also receives information about the time progress TA to N neighboring base stations BTSn and can now calculate the location even more precisely with known methods, such as the intersection calculation of the N distance circles around the N base stations BTSn.
  • a subscriber station MS should preferably only ever be moved between the cells of a base station control device (BSC) area.
  • BSC base station control device
  • the resolution can be greatly improved by the network averaging the TA values coming in periodically from the subscriber stations MS over time. The same averaging should also be carried out for the values of the reception field strengths RXLEV of the serving cell and the neighboring cells.
  • Another potential for improvement lies in oversampling the access Signals (access bursts) in the base station BTS or the use of further equalizer values.
  • the network can also allow the access signals (access bursts) on the time control channel for packet data PTCCH (Packet Timing Control Channel) to flow into the averaging from subscriber stations MS in the packet transfer mode, which are currently approx. sent to the network every 2 seconds. If this information is not sufficient for a subscriber station MS in terms of accuracy, then the network can query or "poll" the subscriber station MS, e.g. by means of the so-called "Packet_Pollmg_Request” message. In this case, the subscriber station MS in the uplink sends four successive access bursts for packet control confirmations (“Packet_Control_Acknowledgments”). Through multiple pollen in short time intervals, the network can obtain any number of access bursts for the highly precise determination of the time progress TA of a subscriber station MS m of a cell Z or Zn.
  • PTCCH Packet Timing Control Channel
  • C / I carrier / interference cards
  • C / I Carrier to Interference
  • N OJ 3 C ⁇ Q Q. P- ⁇ C ⁇ ⁇ -3 ⁇ o 0 ) P- C ⁇ cn ⁇ ⁇ 3 P- rt ⁇ tr P- ti rt ⁇ 3
  • Such cards can be created especially for different times of the day, e.g. Busy hour, night time.
  • trigger points so that subscriber stations MS that are located in a specific area, e.g. a shopping center, stop immediately via SMS, email or other information, e.g. Advertising, special offers etc., can be supplied.
  • the application of the method is particularly advantageous for Class A or Simple Class A subscriber stations, since no "service interrupt" is necessary for existing voice connections.
  • All subscriber stations MS in the cell or only subscriber stations MS registered for the location determination service LCS can be supplied with the location determination service LCS or services based thereon.
  • the accuracy of the measurements can also be specified specifically for MS, for example by individually setting the measurement report periods (measurement report periods) and / or by additionally polling the subscriber station MS to initiate access requests (access bursts) for location or time progress. (TA) determination. It is advantageous to have a larger periodicity during rush hour in order to use as little network capacity as possible, and very small periodicities during the night when the network load is relatively low.
  • the network If a subscriber station is in the so-called packet transfer mode, i.e. a packet data connection is activated, the network also evaluates the TA values that it currently receives via the "Packet Timing Control Channel” (PTCCH) approximately every 2 seconds for continuous TA setting.
  • PTCCH Packet Timing Control Channel

Landscapes

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

Abstract

L'invention concerne un procédé de localisation de stations (MS) pouvant porter des services de données de paquets dans un système de communication (GSM), chaque station (MS) communiquant dans une cellule radio (Z) avec la station réseau (BTS) côté réseau correspondante par l'intermédiaire d'au moins une interface radio (V). Côté réseau, une localisation destinée à déterminer la position des stations (MS) est effectuée périodiquement ou sur demande. Pour une mise en oeuvre rapide des informations de position, la position courante et des conditions radio réelles des stations (MS) sont enregistrées côté réseau. De manière avantageuse, les stations (MS) pouvant porter des services de données de paquets peuvent être utilisées pour supporter d'autres procédés, par exemple de détermination de l'intensité de champ de réception et/ou du niveau d'interférence, de réalisation d'un changement de cellule, et/ou d'activation d'une demande de sondage.
EP02715448A 2001-02-08 2002-01-17 Procede et dispositif de localisation de stations radio pouvant porter des services de donnees de paquets dans un systeme de communication Withdrawn EP1358777A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02715448A EP1358777A1 (fr) 2001-02-08 2002-01-17 Procede et dispositif de localisation de stations radio pouvant porter des services de donnees de paquets dans un systeme de communication

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP01102979 2001-02-08
DE10105678 2001-02-08
EP01102979 2001-02-08
DE2001105678 DE10105678A1 (de) 2001-02-08 2001-02-08 Verfahren und Vorrichtung zur Ortsbestimmung von Paketdaten-dienst-fähigen Funkstationen in einem Kommunikationssystem
PCT/EP2002/000447 WO2002063909A1 (fr) 2001-02-08 2002-01-17 Procede et dispositif de localisation de stations radio pouvant porter des services de donnees de paquets dans un systeme de communication
EP02715448A EP1358777A1 (fr) 2001-02-08 2002-01-17 Procede et dispositif de localisation de stations radio pouvant porter des services de donnees de paquets dans un systeme de communication

Publications (1)

Publication Number Publication Date
EP1358777A1 true EP1358777A1 (fr) 2003-11-05

Family

ID=26008442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02715448A Withdrawn EP1358777A1 (fr) 2001-02-08 2002-01-17 Procede et dispositif de localisation de stations radio pouvant porter des services de donnees de paquets dans un systeme de communication

Country Status (3)

Country Link
US (1) US20050075112A1 (fr)
EP (1) EP1358777A1 (fr)
WO (1) WO2002063909A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4178055B2 (ja) * 2003-02-25 2008-11-12 株式会社エヌ・ティ・ティ・ドコモ 無線パケット通信システム、無線パケット通信方法、基地局及び移動局
JP4330628B2 (ja) * 2003-08-22 2009-09-16 ノキア コーポレイション ロケーションベースアプリケーションに従って移動局のロケーション判断を容易にするための装置及び関連方法
US7130641B1 (en) * 2004-01-07 2006-10-31 Sprint Spectrum L.P. Method and system for controlling location-determination in a wireless communication system
MXPA06007921A (es) * 2004-02-06 2007-03-07 Ericsson Telefon Ab L M Transmision entre una red ceular y una red de acceso de radio sin licencia utilizando un identificador individual para todos los puntos de acceso.
WO2005079087A1 (fr) * 2004-02-18 2005-08-25 Telefonaktiebolaget Lm Ericsson (Publ) Reseaux de radios sans licence d'un systeme mobile de telecommunications
US8112082B2 (en) * 2004-03-08 2012-02-07 Telefonaktiebolaget Lm Ericsson (Publ) Unlicensed-radio access networks in mobile cellular communication networks
WO2005086430A1 (fr) * 2004-03-09 2005-09-15 Telefonaktiebolaget L. M. Ericsson (Publ) Transmission radio par paquets sur un reseau pirate
EP1594329B1 (fr) * 2004-05-06 2008-03-12 Nokia Siemens Networks Gmbh & Co. Kg Méthode de détermination de position d'un terminal mobile pour utiliser un service dépendant de la position dans un système de communication par radio, système correspondant et appareil pour supporter la détermination de position
EP2654360B1 (fr) * 2004-09-08 2019-12-25 Mitsubishi Denki Kabushiki Kaisha Station de base, station mobile, système de communication et procédé de communication
CA2586574A1 (fr) * 2004-11-30 2007-06-08 Telefonaktiebolaget Lm Ericsson (Publ) Procede de distribution de capacite de services multimedias partages
KR101454021B1 (ko) * 2007-08-07 2014-10-27 삼성전자주식회사 이동통신시스템에서 홈셀/개인네트워크셀의 메저먼트 장치및 방법
EP3755075A3 (fr) * 2010-03-12 2021-03-31 BlackBerry Limited Améliorations avancées de synchronisation pour communications cellulaires
WO2012041422A2 (fr) * 2010-09-30 2012-04-05 Panasonic Corporation Configuration d'avance de synchronisation pour de multiples porteuses composantes de liaison montante
CN102595480A (zh) * 2012-01-19 2012-07-18 大唐移动通信设备有限公司 一种位置信息确定方法及装置
US9389304B2 (en) * 2012-05-21 2016-07-12 Zte Corporation Using multiple access channels for wireless device positioning
KR101941595B1 (ko) * 2012-11-12 2019-01-24 삼성전자주식회사 셀룰라 통신 시스템에서 셀간 간섭을 완화하는 장치 및 방법

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000030393A1 (fr) * 1998-11-18 2000-05-25 Ericsson Inc. Localisation de mobiles gprs par la methodologie du temps d'arrivee

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993001665A1 (fr) * 1991-07-01 1993-01-21 Motorola, Inc. Systeme de communication personnel offrant un mode d'information supplementaire
US5963550A (en) * 1995-01-06 1999-10-05 Ntt Mobile Communications Network, Inc. Packet transfer scheme and mobile communication system
FI960381A (fi) * 1996-01-26 1997-07-27 Nokia Telecommunications Oy Matkaviestimen paikallistaminen digitaalisessa matkaviestinjärjestelmässä
AUPO084596A0 (en) * 1996-07-04 1996-07-25 University Of Technology, Sydney Location and tracking system enhancements
SE519366C2 (sv) * 1998-11-17 2003-02-18 Ericsson Telefon Ab L M Metod och anordningar rörande ett radiokommunikationssystem
US6542750B2 (en) * 2000-06-10 2003-04-01 Telcontar Method and system for selectively connecting mobile users based on physical proximity

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000030393A1 (fr) * 1998-11-18 2000-05-25 Ericsson Inc. Localisation de mobiles gprs par la methodologie du temps d'arrivee

Also Published As

Publication number Publication date
US20050075112A1 (en) 2005-04-07
WO2002063909A1 (fr) 2002-08-15

Similar Documents

Publication Publication Date Title
EP0938820B1 (fr) Procede et systeme de station de base pour la configuration d'une interface radio entre une station mobile et une station de base d'un systeme radiotelephonique mobile a multiplexage dans le temps pour une transmission de donnees par paquets
DE69828766T2 (de) Zuteilung von steuerkanälen in einem paket-funknetzwerk
DE60132351T2 (de) Teilnehmergerät-abbau mittels eines rufverfahrens in einem zellularen kommunikationssystem
DE60130418T2 (de) Verfahren und gerät um ein digitales, drahtloses kommunikationssystem mit verteilter architektur zur verfügung zu stellen
EP1358777A1 (fr) Procede et dispositif de localisation de stations radio pouvant porter des services de donnees de paquets dans un systeme de communication
DE60030363T2 (de) Funknetzwerksteuerung
DE69926297T2 (de) Verfahren zum Weiterreichen zwischen zwei Relays einer Zelle eines digitalen zellularen Funkkommunikationssystems mittels eines gemeinsamen Übergangskanals.
DE69414514T3 (de) Burstfüllstruktur in einer digitalen TDMA zellularen Funkanordnung, und Basisstation, die diese Struktur aufbaut
EP1627548B1 (fr) Determination d'un temps de parcours de signal entre un terminal de telephonie mobile et une station de base
EP1502472B1 (fr) Procede et systeme de radiocommunication destine a la transmission de donnees utiles en tant que service a plusieurs postes de reseau
DE69925297T2 (de) Verfahren zur zellwiederauswahl in einem zellulären netzwerk, sowie entsprechendes netzwerkteil und teilnehmerendgerät
DE19831345C2 (de) Verfahren und Funk-Kommunikationssystem zum Rufen einer Mobilstation
EP1090526A1 (fr) Commande d'acces dans un systeme de radiotelecommunication
EP1090520B1 (fr) Procede et station de base pour transmettre des donnees d'organisation dans un systeme de radiocommunication
DE10019402B4 (de) Vorrichtung für einen weiteren Verbindungsaufbau zur Datenübertragung über ein mobiles Telekommunikationssystem
DE19647629C2 (de) Verfahren und Basisstationssystem zur Konfigurierung einer Funkschnittstelle zwischen einer Mobilstation und einer Basisstation eines Zeitmultiplex-Mobilfunksystems für eine Paketdatenübertragung
DE10105678A1 (de) Verfahren und Vorrichtung zur Ortsbestimmung von Paketdaten-dienst-fähigen Funkstationen in einem Kommunikationssystem
WO2002051176A1 (fr) Procede de transmission de donnees dans un systeme de communication comportant differentes unites, systeme de station de base installe a cet effet et systeme de radiocommunication
DE10133238B4 (de) Verfahren zur paketvermittelten Datenübertragung in einem Funkkommunikationssystem mit mehreren Funkzellen
DE19743350A1 (de) Verfahren und Kommunikationssystem zur drahtlosen Informationsübertragung
WO1999048319A1 (fr) Procede, station mobile et installation de reseau pour l'etablissement de liaisons pour des services disponibles dans une zone de desserte
WO2002019463A2 (fr) Commande d'une antenne adaptative
EP1155584A1 (fr) Procede de commande de la repartition des taux de transfert dans un systeme de telecommunications radio cellulaire
WO2003007528A1 (fr) Procede de transmission de donnees a commutation par paquets dans un systeme de radiocommunication multicellulaire
WO2003098372A2 (fr) Procede et dispositif de gestion de la mobilite dans un systeme de communication

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: 20030717

AK Designated contracting states

Kind code of ref document: A1

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

17Q First examination report despatched

Effective date: 20031111

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20041022