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WO2000047009A1 - Procede permettant de definir une zone de residence d'un systeme radiocellulaire - Google Patents

Procede permettant de definir une zone de residence d'un systeme radiocellulaire Download PDF

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Publication number
WO2000047009A1
WO2000047009A1 PCT/FI2000/000062 FI0000062W WO0047009A1 WO 2000047009 A1 WO2000047009 A1 WO 2000047009A1 FI 0000062 W FI0000062 W FI 0000062W WO 0047009 A1 WO0047009 A1 WO 0047009A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio
subscriber station
home zone
radio cells
bts3
Prior art date
Application number
PCT/FI2000/000062
Other languages
English (en)
Inventor
Kimmo Aalto
Thomas Jul
Sören RIIS
Original Assignee
Nokia Networks 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 Networks Oy filed Critical Nokia Networks Oy
Priority to AU24432/00A priority Critical patent/AU2443200A/en
Publication of WO2000047009A1 publication Critical patent/WO2000047009A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • 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

Definitions

  • the present invention relates to a solution for defining a home zone for a subscriber station of a cellular radio system.
  • the subscriber station can be for instance a mobile telephone of a mobile communication system, such as the GSM system (Global System for Mobile communications), or for instance a WLL subscriber station (Wireless Local Loop) where a conventional telephone of a fixed telephone network is connected to a WLL-terminal which establishes a connection over a radio path between the telephone and a base station of the cellular radio system.
  • GSM Global System for Mobile communications
  • WLL subscriber station Wireless Local Loop
  • a home zone consists of a group of radio cells which cover, for instance, the geographical area in the vicinity of the home of the owner of the subscriber station.
  • the information about the home zone of a specific subscriber station is stored into a register of the cellular radio system, such that the cellular radio system can find out whether or not the subscriber station is using a radio cell within its home zone when it is establishing a call.
  • this information might be used to decide whether or not the call is allowed (the operator of a WLL system may wish to restrict the calls from a WLL subscriber station such that only calls from the home zone of the subscriber station are allowed).
  • the operator wishes to charge the calls of the subscriber station at different rates, depending on whether or not the call is made from the home zone or not (operators usually charge a call at a lower rate if the call is made from the home zone of the subscriber station).
  • the radio cells which are included in the home zone of a subscriber station are all neighboring cells whose radio coverage areas overlap with each other to some extent.
  • a home zone has been defined for a given subscriber station in such a way that when the subscriber station is added to the system, an operator checks, e.g. by using a map, which radio cell is likely to cover best the geographical area which the user of the subscriber station wishes to select as the home zone. This radio cell and perhaps some of its neighboring cells are then defined as the home zone of the subscriber station.
  • the above mentioned prior art solution has, however, the drawback that the actual field strengths of the radio cells cannot be taken into consideration.
  • the field strength of a radio cell may vary considerably within the radio cell, especially in urban areas where buildings interfere with the signal propagation.
  • the choosing of radio cells for the home zone may fail, if the cells are chosen exclusively on the basis of a map.
  • An object of the present invention is to provide a solution for defining a home zone for a subscriber station, which solution requires less time and resources, and which makes it possible to select the most appropriate radio cells with a greater accuracy than previously. This object is achieved with a method of defining a home zone for a subscriber station of a cellular radio system.
  • Said method is characterized by the steps of: defining an initial home zone for said subscriber station based on location information supplied by the user of the subscriber station, said initial home zone consisting of a group of radio cells, monitoring the calls of said subscriber station and storing into a memory means an identifier of the radio cell used for each such call, where the radio cell used for the call belongs to said group of radio cells defined as the initial home zone of the subscriber station, and defining the home zone for said subscriber station to consist of the radio cells which have their identifier stored in said memory means.
  • Another object of the present invention is to provide a cellular radio system where the method of the present invention can be utilized such that the operator can define home zones for subscribers with less efforts and with a greater accuracy than in previous systems.
  • a cellular radio system comprising: a mobile services switching center, and a plurality of radio cells, each radio cell comprising means for establishing a communication path between the mobile services switching center and subscriber stations located within the radio coverage area of the radio cell.
  • the cellular radio system of the present invention is characterized in that the system comprises: a service positioning system comprising means for providing a list of radio cells as a response to location information fed to the service positioning system, said radio cells being located in the vicinity of a location indicated by said location information, means for defining an initial home zone for a subscriber station to consist of the radio cells included in said list provided by the service positioning system, monitoring means for monitoring the calls of said subscriber station and for storing into a memory means an identifier of the radio cell used for each such call, where the radio cell used for the call belongs to the initial home zone of the subscriber station, and means for defining a home zone for said subscriber station to consist of the radio cells, which have their identifier stored in said memory means.
  • a service positioning system comprising means for providing a list of radio cells as a response to location information fed to the service positioning system, said radio cells being located in the vicinity of a location indicated by said location information, means for defining an initial home zone for a subscriber station to consist of the radio cells
  • the invention is based on the idea that considerable advantages are obtained with a solution where the defining of the home zone is made in two different phases.
  • a first phase an initial home zone is defined for the subscriber station.
  • the initial home zone can be defined to include a large number of radio cells. Any radio cell that is located in the vicinity of the location indicated by location information obtained from the subscriber can be included in the initial home zone.
  • the initial home zone is defined, the actual behavior of the subscriber station is monitored. During the monitoring period information indicating which of the radio cells included in the initial home zone are actually used in calls made from said subscriber station is obtained and stored into a memory means.
  • the present invention thus provides a solution where an initial, large home zone is defined at the beginning, and later on the size of the home zone is reduced to include only the necessary radio cells.
  • the most significant advantages of the solution of the present invention are that the actual radio coverage of the radio cells can be taken into consideration when cells for the home zone are selected, that no extra radio cells need to be included in the home zone, that the definition of the home zone can be automatic, i.e. the network elements of the radio system can automatically carry out the selection of the radio cells for the home zone, so the user of a subscriber station does not notice that a home zone is being defined for the subscriber station.
  • the calls from the subscriber station are monitored until said subscriber station has made a predetermined number of outgoing calls from said initial home zone.
  • the subscriber station may be used without any restrictions during the monitoring phase, and only the calls made from the initial home zone are registered and taken into consideration when the home zone of the subscriber station is eventually defined.
  • the location information can be obtained from the the subscriber's address.
  • the operator enters the subscriber address for instance into a subscriber register after which the location information, such as the postal code of the subscriber, can be fed from the subscriber register into the service positioning system.
  • the service positioning system comprises means for providing a geographical map, for instance on a display of a computer terminal.
  • the location information can be fed into the service positioning system such that a pointing device is used to point at the location of the subscribers home on said map.
  • the location information is fed into the service positioning system when the subscriber makes an initial call with the subscriber station.
  • the location information is obtained from the cell identity of the cell used for making the initial call.
  • Figure 1 shows a flow diagram of a preferred embodiment of the method of the invention
  • Figure 2 shows a block diagram of a preferred embodiment of the cellular radio system according to the present invention
  • Figure 3 shows a map provided by a service positioning system in a preferred embodiment of the present invention.
  • Figure 1 shows a flow diagram of a preferred embodiment of the method of the invention.
  • the flow diagram of Figure 1 can be used for instance for defining a home zone for a subscriber unit MS of a GSM system (Global System for Mobile communications).
  • the home zone can be defined for instance if a new subscriber station is taken into use in the system.
  • the flow diagram of Figure 1 can also be used if a new radio cell has been added to the system, in which case it will be necessary to define new home zones for all subscriber stations which have their home zone located in the vicinity of the new radio cell.
  • location information is obtained for the subscriber station in question.
  • the location information is obtained from the address of the subscriber.
  • the postal code of the subscriber's home address for instance, is used to identify the location where the home zone should be located, and also to identify the identifier of a radio cell covering said location.
  • the location information is obtained by using a map where the coverage areas and the identifiers of the radio cells are indicated.
  • the identifiers of the radio cells covering the location where the home zone should be located are obtained from the map. The address of the user of the subscriber unit is thus used to find the correct location on the map and then a radio cell identifier is read from the map.
  • the user of the subscriber unit is instructed to make an initial call from a location which should be covered by the home zone.
  • the radio cell used for making the initial call can thus be identified by the cellular radio system.
  • the subscriber may be instructed to make the initial call to a specific service number, for instance such that the system is able to identify the call as an initial call.
  • the subscriber may be instructed that he has to make his first call from the geographical location which should be covered by the home zone.
  • an initial home zone is defined for the subscriber unit based on the obtained location information. All radio cells located in the vicinity of the location indicated by the location information are included in the initial home zone.
  • the number of radio cells in the initial home zone should be large in order to ensure that all possible radio cells that might be needed in the home zone are included.
  • block C the monitoring of the subscriber station is started. During the monitoring phase the system monitors all outgoing calls from the subscriber unit. If it is detected in block D that the radio cell used for a call belongs to the initial home zone of the subscriber unit in question, the cell identifier is stored into a memory means in block E.
  • block F a check is made in order to find out if a predetermined number of radio cell identifiers has been stored into the memory means. If the predetermined limit value has been reached, then block G is entered.
  • a home zone is defined for the subscriber station, such that the home zone includes those radio cells whose identifiers have been stored into the memory means.
  • the size of the initial home zone has thus been reduced such that the (final) home zone includes only those radio cells which actually have been used by the subscriber station.
  • FIG. 2 shows a block diagram of a preferred embodiment of the cellular radio system according to the present invention.
  • the cellular radio system of Figure 2 can be for instance a GSM system, which is used both by ordinary mobile telephones MS and WLL subscriber units 1.
  • the WLL subscriber unit 1 of Figure 2 consists of a WLL terminal that provides a communication path between the cellular radio system and an ordinary telephone.
  • the cellular radio system of Figure 2 includes a mobile services switching center MSC, a base station controller BSC, and base stations BTS1 and BTS2.
  • the cellular radio system of Figure 2 further comprises a Home Location Register HLR and a Visitor Location Register VLR for storing subscriber data.
  • the cellular radio system of the invention shown in Figure 2 is provided with a Subscriber Positioning System SPS and an IN (Intelligent Network) server, which can be used when a home zone is defined for one of the subscriber units.
  • the SPS receives information about the radio coverage areas of the cellular radio system from the Network Planning System NPS, which is a part of the Network Management System NPS in the embodiment of Figure 2.
  • the Network Planning System NPS in Figure 2 includes information about the actual radio coverage areas of the different radio cells. This information may be based on measurement results, for instance.
  • the NPS also contains information about the radio cell identifiers and the location of the different radio cells.
  • the SPS also receives address information from a Geographic Information System GIS.
  • Geographic Information System GIS is also a part of the Network Management System NMS in the embodiment of Figure 2.
  • the SPS comprises means for combining the information obtained from the GIS and the NPS, together with location information fed into the SPS in order to provide a list of radio cells located in the vicinity of the location indicated by the location information.
  • This can be done in at least three alternative ways.
  • the operator enters a new subscriber station MS into the system. This means that the subscriber data, which includes the address of the subscriber, is fed into a register for storing subscriber data. The address is retrieved from said register and fed into the SPS.
  • the SPS uses the information obtained from the GIS to obtain, for instance, the coordinates of the address.
  • the SPS then uses the coordinates to obtain a list of radio cells which according to the NPS are located in the vicinity of said coordinates. Thus a list of radio cells is obtained.
  • the operator activates the SPS over a computer terminal.
  • the SPS then provides a map on the display of said terminal based on information obtained from the GIS. Also the radio cells and their coverage areas are shown on said map.
  • the information about the radio cells is obtained from the NPS.
  • the operator will have a map like the one shown in Figure 3 on the display of his terminal.
  • the operator uses a pointing device, such as a mouse for instance, to indicate the home of the subscriber on said map.
  • the location P in Figure 3 is thus entered into the SPS as location information for the subscriber station.
  • the SPS is then able to determine that radio cells BTS1 , BTS2 and BTS3 are located in the vicinity of the location P, and said radio cells are thus included in the list of radio cells provided by the SPS.
  • the data about a new subscriber station MS is fed into the system, and the subscriber is instructed to make an initial call from his home, for instance to a predetermined service number.
  • the radio cell identifier is retrieved from the system to the SPS.
  • the SPS observes that the radio cell BTS3 has been used for the call.
  • the SPS system is then able to determine from the information in the GIS and NPS that the radio cells BTS1 and BTS2 are also located in the vicinity of the location indicated by the location information (the identifier of the radio cell BTS3).
  • the SPS therefore provides a list of the radio cells BTS1 , BTS2 and BTS3.
  • the SPS After the SPS has provided the list of the radio cells BTS1-BTS3, the SPS stores the list as an initial home zone into the IN server. From that moment the IN server begins to monitor the calls of the subscriber station MS. During the monitoring phase, the IN server stores the identifier of the used radio cell into a memory means each time the IN server discovers that the subscriber station MS has made a call from its initial home zone. When a predetermined number of identifiers is stored into said memory means then a home zone is defined to consist of those radio cells whose identifiers are stored into said memory means. In practice this means that the size of the initial home zone is reduced, the "final" home zone only including those radio cells of the initial home zone that actually have been used by the subscriber station MS during the monitoring phase. In the case of Figure 3, the final home zone of the subscriber station may include the radio cells BTS1 and BTS3 that cover best the location P.
  • the cellular radio system of the present invention also offers the possibility to automatically redefine the home zones of a subscriber station, for instance, in order to take into account the effects of a new radio cell. This can be done for instance such that a new initial home zone is defined for the subscriber station to consist of all radio cells of the previous (final) home zone and of any radio cells located in the vicinity of the previous home zone. Then a new monitoring phase is entered, and after said new monitoring phase, a new home zone can be defined to consist of the radio cells of said initial home zone that have been used during the monitoring phase.
  • Figure 3 shows a map provided by a service positioning system
  • the SPS receives the information needed for producing a map from a Geographic Information System GIS. Also address information may be included in the information which is fed from the GIS into the SPS.
  • the SPS also receives information about the radio cell coverage areas from the Network Planning system NMS of the cellular radio system.
  • NMS Network Planning system
  • the SPS is able to produce a map, as indicated in Figure 3, including both objects in the environment, such as houses, mountains and lakes, and information about the field strengths of the different radio cells. This makes it possible to identify the radio cells which are located, for instance, in the vicinity of the subscriber's home in order to define an initial home zone for the subscriber station used by said subscriber.

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

Abstract

L'invention concerne un système radiocellulaire qui comporte un centre de commutation de services mobiles (CCM) et une pluralité de cellules radio (BTS1-BTS3), chaque cellule radio comprenant des moyens permettant d'établir une voie de communication entre le CCM et les stations d'abonné (MS, 1) situées dans la zone de couverture radio des cellules radio. Afin de définir une zone de résidence pour une station d'abonné, le système de l'invention comprend un système de localisation de services (SPS) comportant un dispositif permettant de fournir une liste de cellules radio (BTS1-BTS3) en réponse aux informations d'emplacement (BTS3) alimentées dans le système de localisation de services, ces cellules radio étant situées à proximité d'un emplacement (P) indiqué par lesdites informations d'emplacement. Le SPS comporte également un dispositif permettant de définir une zone de résidence initiale pour une station d'abonné (MS) consistuée des cellules radio (BTS1-BTS3) comprises dans ladite liste fournie par le SPS, et un dispositif de surveillance (IN) permettant de surveiller les appels de ladite MS et pour stocker dans une mémoire un identificateur de la cellule radio utilisée pour chaque appel de ce type, la cellule radio utilisée pour l'appel appartenant à la zone de résidence initiale de la MS. Le SPS comporte finalement un dispositif permettant de définir une zone de résidence pour la dite station d'abonné constituée des cellules radio (BTS1-BTS3) ayant leur identificateur stocké dans ladite mémoire.
PCT/FI2000/000062 1999-02-01 2000-01-31 Procede permettant de definir une zone de residence d'un systeme radiocellulaire WO2000047009A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU24432/00A AU2443200A (en) 1999-02-01 2000-01-31 A method of defining a home zone of a cellular radio system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990183A FI990183A (fi) 1999-02-01 1999-02-01 Solukkoradiojärjestelmä
FI990183 1999-02-01

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WO2000047009A1 true WO2000047009A1 (fr) 2000-08-10

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AU (1) AU2443200A (fr)
FI (1) FI990183A (fr)
WO (1) WO2000047009A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU746292B2 (en) * 1999-10-19 2002-04-18 Samsung Electronics Co., Ltd. Method of performing home zone service in mobile radio communication system
KR100350464B1 (ko) * 2000-10-11 2002-08-28 삼성전자 주식회사 이동통신 시스템에서 홈-존 데이터 베이스 갱신 방법
KR100350463B1 (ko) * 2000-10-11 2002-08-28 삼성전자 주식회사 이동통신 시스템에서 홈-존 데이터 베이스의 실시간갱신을 위한 시스템 및 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431956A2 (fr) * 1989-12-07 1991-06-12 Motorola, Inc. Système de diagnostic pour radiotéléphone cellulaire
US5568153A (en) * 1995-05-30 1996-10-22 Telefonaktiebolaget Lm Ericsson Individually defined personal home area for subscribers in a cellular telecommunications network
WO1997013387A1 (fr) * 1995-10-05 1997-04-10 Telia Ab Identification d'une region locale dans un systeme de telecommunications mobile
WO1998038819A2 (fr) * 1997-02-25 1998-09-03 Nokia Telecommunications Oy Procede d'attribution d'une cellule locale a un poste d'abonne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431956A2 (fr) * 1989-12-07 1991-06-12 Motorola, Inc. Système de diagnostic pour radiotéléphone cellulaire
US5568153A (en) * 1995-05-30 1996-10-22 Telefonaktiebolaget Lm Ericsson Individually defined personal home area for subscribers in a cellular telecommunications network
WO1997013387A1 (fr) * 1995-10-05 1997-04-10 Telia Ab Identification d'une region locale dans un systeme de telecommunications mobile
WO1998038819A2 (fr) * 1997-02-25 1998-09-03 Nokia Telecommunications Oy Procede d'attribution d'une cellule locale a un poste d'abonne

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU746292B2 (en) * 1999-10-19 2002-04-18 Samsung Electronics Co., Ltd. Method of performing home zone service in mobile radio communication system
KR100350464B1 (ko) * 2000-10-11 2002-08-28 삼성전자 주식회사 이동통신 시스템에서 홈-존 데이터 베이스 갱신 방법
KR100350463B1 (ko) * 2000-10-11 2002-08-28 삼성전자 주식회사 이동통신 시스템에서 홈-존 데이터 베이스의 실시간갱신을 위한 시스템 및 방법

Also Published As

Publication number Publication date
FI990183A (fi) 2000-08-02
FI990183A0 (fi) 1999-02-01
AU2443200A (en) 2000-08-25

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