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WO1995001069A1 - Systemes et procedes de telecommunications - Google Patents

Systemes et procedes de telecommunications Download PDF

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Publication number
WO1995001069A1
WO1995001069A1 PCT/GB1994/001355 GB9401355W WO9501069A1 WO 1995001069 A1 WO1995001069 A1 WO 1995001069A1 GB 9401355 W GB9401355 W GB 9401355W WO 9501069 A1 WO9501069 A1 WO 9501069A1
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WO
WIPO (PCT)
Prior art keywords
subscriber
network
distant
calls
visiting
Prior art date
Application number
PCT/GB1994/001355
Other languages
English (en)
Inventor
Michael John Mccombe
Original Assignee
Vodafone Limited
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 Vodafone Limited filed Critical Vodafone Limited
Priority to AU69784/94A priority Critical patent/AU6978494A/en
Publication of WO1995001069A1 publication Critical patent/WO1995001069A1/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
    • H04W8/12—Mobility data transfer between location registers or mobility servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/69—Identity-dependent
    • H04W12/72—Subscriber identity

Definitions

  • the invention relates to telecommunication systems and methods by means of which a plurality of subscribers may communicate with each other.
  • Embodiments of the invention to be described in more detail comprise such telecommunications systems in the form of telephone networks and more especially such systems involving mobile telephones (such as in a cellular network).
  • Mobile telephones may be hand-portable or they may be mounted (permanently or otherwise) in a vehicle (such as a land vehicle - a car or train, for example) or a ship or aircraft.
  • a vehicle such as a land vehicle - a car or train, for example
  • ship or aircraft a ship or aircraft.
  • a subscriber to a particular cellular network in a system is able to roam to (that is, gain telephone service from) a different cellular network (a “visited” network) in the system if and when the subscriber is temporarily located in the visited network.
  • a different cellular network a “visited” network
  • subscribers visit an area covered by a different cellular network within the system they could apply to subscribe to the visited network in the same way as any new subscriber.
  • this application process necessitates checking the identity of the applicant and such details as credit-worthiness. "This process may be complicated and long drawn-out and susceptible to fraud, particularly if the subscriber originates from another country.
  • a method of operating a cellular telephone system having local subscribers to the system ("the .main system") who are respectively identified to the main system by means of respective subscriber identification numbers, these numbers being used within the main system to record the location therein of each subscriber within the main system for receiving and initiating calls and for recording associated billing information, the method comprising the steps of: providing similar identification numbers for distant subscribers who are not subscribers of the main system but are subscribers to a second cellular telephone system, each latter number being input into the main system when visited by the distant subscriber, such number not only being used within the main system to record the location therein of the subscriber for receiving and initiating calls and for recording associated billing information but also identifying the subscriber as being a subscriber subscribing to the second cellular telephone system; providing inter-system communications means between the two systems so that calls to a distant subscriber visiting the main system are routed via the second system and the communication means and the main system and thence to the location in the latter of the distant subscriber which is identified within the main system by that
  • a cellular telephone arrangement comprising a main cellular telephone system having local subscribers to the system who are identified to the system by means of respective subscriber identification numbers to be input into the system, these numbers being used within the system to record the location of each subscriber within the system for receiving and initiating calls and for recording associated billing information; reading means within the main system for reading subscriber identification numbers input into the system by a distant subscriber who is not a subscriber to the main system but is a subscriber to a second cellular telephone system, such subscriber identification number identifying the distant subscriber as being a subscriber to the second system but temporarily authorised within the main system and being used within the main system to record the location of the distant subscriber within the main system for receiving and initiating calls and for recording associated billing information; inter-system communication means providing communication between the main system and the second system so that calls to the distant subscriber in the main system are routed from the said other system and via the communication means and the main system and thence to the location of the distant subscriber therein, and so that calls
  • a cellular telephone arrangement comprising: a primary cellular telephone network and a distant cellular telephone network; the primary network having local subscribers to that network who are respectively identified to that network by means of respective subscriber identification numbers; the distant network having distant subscribers to that network who are respectively identified to that network by means of respective subscriber identification numbers; each network having a respective home location register (“HLR”) for storing subscriber data relating to each subscriber to that network including the respective subscriber identification numbers; each network having a respective plurality of visitor location registers (“VLR's”) each corresponding to a particular cell of the network; means within each network for responding to the input into a particular cell of that network of the subscriber identification number of a subscriber to that network to access the corresponding stored subscriber data from the HLR of that network and to store it temporarily in the VLR of that cell for use in relation to calls made to or from that subscriber via that cell and for recording associated billing information; means for storing, in the HLR of the primary network, data ("visiting subscriber
  • Figure 1 is a diagrammatic drawing of one of the arrangements.
  • Figure 2 is a diagrammatic drawing of two GSM networks for use in explaining the operation of the arrangement of Figure 1.
  • Figure 1 diagrammatically shows three (in this example) GSM cellular networks A,B and C located in different European countries (in practice, there may be more than one GSM network in any particular country) .
  • Network A may, for example, be the VODAFONE (trade mark) network in the United Kingdom, and networks B and C could, for example, be networks in Germany and France respectively. These networks are shown as being interconnected by communications and control links indicated diagrammatically at 10,12 and 14.
  • the GSM standard, common to all the networks A,B and C, is such that a subscriber to network A in the United Kingdom can roam to either of networks B and C and make and receive calls with no previous formality.
  • the subscriber When roaming in this way and making and receiving calls, the subscriber is billed for all charges relating to such calls through the home network A in the usual way. Callers to the subscriber use the subscriber's usual telephone number.
  • the visited network used by the roaming subscriber may levy handling charges of its own. Any such handling charges are automatically passed back to the home network A which charges them out to the subscriber, the home network A being responsible, thereafter, for reimbursing the visited network B or C. The visited network is therefore not involved in registering the roaming subscriber or checking the subscriber's credit-worthiness.
  • FIG. 1 Also shown in Figure 1 is an AMPS or a D-AMPS network D which in this example is assumed to be located in the United States of America. There are a large number of separate such networks in the U.S.A. Until recently, roaming between them was either not possible or difficult or restricted - that is, it was not possible for a subscriber to one of them to roam to another one and to make and receive calls via the visited network without first going through an application procedure substantially as though that subscriber were a new subscriber. Roaming between different AMPS or D-AMPS networks is now possible.
  • the network arrangement now to be described in more detail enables the above-mentioned roaming capability to be extended so that (a) a subscriber to an AMPS/D-AMPS network (such as in the United States system) can roam into the area covered by the GSM system (such as networks A,B and C) , and (b) a subscriber to a network (such as networks A,B and C) in the GSM system can roam into the area covered by the United States AMPS/D-AMPS system.
  • GSM Global System for Mobile communications
  • networks A,B and C a subscriber to a network in the GSM system
  • calls to and from the roaming subscriber are made via the visited network, and all financial charges involved in such calls are billed automatically to the subscriber via the subscriber's home network. Calls to the roaming subscriber are made using the subscriber's usual telephone number.
  • FIG. 2 diagrammatically explains the operation of the GSM networks of Figure 1 in simplified form. Only networks A and B are shown in Figure 2.
  • Network A has a number of base stations (BS) such as BS 22A,24A and 26A.
  • BS base stations
  • Each base station corresponds to a respective cell of the network and receives calls from and transmits calls to a subscriber in that cell by radio.
  • MS subscriber
  • 30A Such a subscriber (MS) is shown at 30A.
  • the base stations are arranged in groups and each group of base stations is controlled by a mobile service switching centre (MSC) , such as MSC 32A for BS 22A to 26A.
  • MSC mobile service switching centre
  • the network also has two other MSC's 34A and 36A, each of which is shown as controlling three further BS's. In practice, the network will of course incorporate more MSC's and BS's than shown in Figure 2.
  • SIM Subscriber identification module
  • the SIM card identifies the subscriber to the network.
  • the SIM card is pre-programmed with a unique identification number, the "International Mobile Subscriber Identity” (IMSI) which is not visible on the card and is not known to the subscriber.
  • IMSI International Mobile Subscriber Identity
  • the subscriber is of course also issued with a publically known number, that is, the subscriber's telephone number, by means of which calls to that subscriber are initiated by callers. This number is the MSISDN ("Mobile Station International IDSN Number").
  • the network includes a "home location register” (HLR) 40A which, for each subscriber to the network, stores the IMSI and the corresponding MSISDN together with other subscriber data.
  • HLR home location register
  • the subscriber places the SIM card in a card reader associated with the mobile (MS 30A in this example) and enters an identification number (PIN) .
  • PIN identification number
  • MS 30A transmits the IMSI (read from the card) to the base station (BS 22A in this example) associated with the particular cell in which the MS is located.
  • BS 22A transmits this IMSI to the MSC 32A.
  • MSC 32A now accesses the appropriate location in the HLR 40A and extracts the corresponding subscriber MSISDN and other subscriber data from the appropriate storage location, and stores it temporarily in a location in a "visitor location register" (VLR) 42A.
  • VLR visitor location register
  • Each of the other MSC's of the network (MSC 34A and MSC 36A) has a respective VLR associated with it and operates in the same way as already described when a subscriber activates an MS in one of the cells corresponding to one of the BS's controlled by that MSC.
  • MS 30A When the subscriber wishes to make a call using MS 30A, having already inserted the SIM card into the reader associated with this MS in the manner described, the subscriber enters the telephone number of the called party in the usual way. This information is received by BS 22A and the call is then routed to the called party via the MSC 32A.
  • MSC 32A can associate the call with the particular subscriber and thus record information for charging purposes.
  • MSC 32A is able to route this call to MS 30A via BS 22A using the information relating to that subscriber and to MS 30A which is temporarily stored in VLR 42A.
  • FIG. 2 Also shown in Figure 2 is the GSM network B. Items in network B corresponding to those in network A are similarly referenced, but with the suffix "B" instead of "A". Of course, the network B is likely to have a different arrangement and number of MSC's and BS's but operates in the same way as network A.
  • HLR 40A HLR 40A
  • MS 30B mobile subscriber identity
  • the procedure described above is substantially repeated.
  • the subscriber inserts the SIM card into the card reader in MS 30B and enters the PIN.
  • the mobile transmits the IMSI from the card to the adjacent base station (BS 22B) and thence to MSC 32B.
  • MSC 32B will now recognise, from the structure of the IMSI, that the subscriber is not a subscriber to network B but is a subscriber to network A. Therefore, MSC 32B will access HLR 40A instead of HLR 40B (via interconnection 10, see Figure 1). The subscriber's information, including the relevant MSISDN and other subscriber data, will be accessed and temporarily stored in VLR 42B. All this information is thus ready for use in processing calls to or from MS 30B. Any charging information associated with any such calls can then be associated with the subscriber information in VLR 42B and eventually transmitted back to HLR 40A and then billed to the subscriber.
  • the call would initially be routed to network A (because this network would be the network identified by the subscriber's publically known telephone number which the calling party would use) .
  • the call would interrogate HLR 40A which would thus produce information that a copy of the subscriber's data was temporarily stored in VLR 42B, thus indicating, of course, that the subscriber had roamed to network B.
  • network A interrogates network B to request a "roaming number". This is in effect a temporary telephone number for the subscriber, being a number r appropriate to network B.
  • This roaming number can now be used to route the calling party's call to network B and thence to MS 30B.
  • the calling party would of course not be aware of this roaming number or of the transferring process.
  • any such subscriber to network D intending to roam into the area of one or more of the GSM networks A,B,C would apply to the operator of network D who would provide the subscriber with a GSM SIM card.
  • This would be pre-programmed with an IMSI identifying the subscriber as a subscriber to a particular one of the GSM networks such as network A, the operator of network D having entered into a commercial arrangement with the operator of network A for this purpose.
  • the IMSI would include further data which would enable network A to identify the subscriber as in fact being a subscriber to network D.
  • HLR home location register
  • Figure 1 the operator of network D therefore associates the subscriber's normal telephone number with a storage location in the HLR 40A (of network A) in which will be stored the IMSI on the SIM card just issued and other subscriber information.
  • the HLR 58 of network D has no knowledge of this information, simply being aware that a SIM card has been issued to a particular network D subscriber and that certain GSM-specific data relating to that SIM card is stored in a particular location in HLR 40A of network A.
  • the subscriber now arrives within the area of network A.
  • the subscriber requires the use of a GSM handset which could be rented perhaps from the operator of network D or on arrival within the area of network A.
  • the associated base station (BS 22A) will transmit the corresponding IMSI data to MSC 32A.
  • network A recognises the subscriber as being a subscriber to network D.
  • HLR 40A of network ' the GSM-specific data such as security and authentication data
  • other subscriber data e.g. data identifying the s riber's telephone number, charrging address etc
  • network A transmits a signal along a communication link 62 to network D and interrogates its HLR 58 in order to access the required subscriber data.
  • VLR 42A Figure 2 in this example. If the subscriber now wishes to make a telephone call via MS 30A, this proceeds in the manner already described above with reference to Figure 2.
  • Charging information associated with the call is stored in VLR 42A and eventually transmitted back to network D such as via conversion unit 60 and communication link 62 or in any other suitable way such as by magnetic tape.
  • Network D then eventually bills the subscriber for the call in the usual way.
  • the operator of network A may add a handling charge and this will be fed back to network D as well.
  • a calling party wishing to make a call to the subscriber via MS 30A will initiate the call using the subscriber's normal network D telephone number.
  • network D responds to such a call by interrogating HLR 58.
  • the storage location corresponding to that particular subscriber now contains information to the effect that the subscriber is located within the area of network A. Accordingly, network D now requests a "roaming number" from network A, again via conversion unit 60 and communication link 62.
  • This roaming number request is transmitted to VLR 42A which responds by returning a roaminc number identifying MS 30A to network D.
  • This roamin.j number now enables network D to route the call to MS 30A via network A.
  • networks A and D have concluded a suitable commercial arrangement and have set up the communication link 62.
  • the subscriber's IMSI is transmitted via the associated base station (BS 22B in this example) to MSC 32B.
  • the IMSI information will identify the subscriber as being a subscriber to network A; network B will not or need not be aware that the subscriber is ultimately a subscriber to network D.
  • MSC 32B will therefore access the HLR of network A, that is, HLR 40A.
  • HLR 40A will only in fact store the GSM-specific part of the subscriber's data but also stores information identifying the appropriate location in HLR 58 in network D where the remainder of the subscriber's data is held.
  • network A Upon receipt of the interrogation from network B, network A is therefore able to identify the subscriber (from the IMSI information transmitted from network B) and accesses the subscriber's data both from HLR 40A and from HLR 58. This subscriber's data is transmitted over communications link 10 (Fig. 1) from " network A to network B and stored in the appropriate location in VLR 42B.
  • the subscriber can now make calls from MS 30B in the manner already explained with reference to Figure 2.
  • the calling information is received by BS 22B and then routed by MSC 32B to the called number (which may, of course, be another number within network B, another number within any of the other networks, or a number within a PSTN).
  • Information concerning the call (call number and duration etc.) is stored in VLR 42B.
  • Network B then eventually uses this information to bill network A for the call.
  • network A passes the billing information onto network D whose operator bills it to the subscriber. This process may involve the addition of handling charges by the operators of either one or both of networks A and B.
  • the call is, as before, initiated by use of the subscriber's home telephone number - that is, the public telephone number which the subscriber has within network D.
  • the call causes interrogation of the appropriate location in HLR 58 (and Figure 1) and this produces information to the effect that the subscriber has roamed to network A; network D will be unaware that the subscriber has in fact roamed to network B.
  • network D requests a roaming number from network A. From the information within HLR 40A, however, network A will be aware that the subscriber is not in fact present within network A but is within network B. In the manner already described above for normal GSM operation, network A now requests a roaming number from network B - that is, a number identifying MS 30B. Upon receipt, this roaming number can be processed in either of two different ways.
  • network A can pass this roaming number directly back to network D via the communication link 62. Using this roaming number, it is now possible for the call to be routed by network D directly to network B and thence to MS 30B.
  • the call is a call to a visiting network A subscriber.
  • Network B may wish to levy a handling charge for the call and this charge would be passed back to network A which would then bill it to network D and thence eventually to the subscriber.
  • the operator of network A could add on its own handling charge which would be billed to the subscriber by network D.
  • the call from the calling party is routed directly to network B from network D. The operator of network A is therefore not directly informed of the call. This method of operation may be open to confusion and mis-use.
  • the roaming number provided by network B and identifying MS 30B is not passed directly back by network A to network D. Instead, the roaming number from network B is stored by network A and then an associated network A roaming number is generated and transmitted over the communications link 62 to network D. Network D uses this network A roaming number to direct the call over communications link 62 to network A. Network A in turn uses the stored network B roaming number to pass the call on to MS 30B via network B. Handling charges from networks A and B are then generated and passed back to network D and thence to the subscriber in the manner already explained. This mode of operation may be more satisfactory in certain circumstances in that network A is always aware of calls to and from the roaming subscriber, no matter which GSM networks is used for the call.
  • AMPS/D-AMPS networks within North America are now able to communicate with each other, to permit subscriber roaming between them, using a roaming signalling specification designated IS41.
  • IS41 a roaming signalling specification
  • subscribers can roam between AMPS/D-AMPS networks, calling charges being billed back to their home network in the manner explained above with reference to GSM networks A,B and C.
  • communication link 62 can operate in accordance with IS41, the conversion unit 60 being operable accordingly.
  • Communications link 62 could be a C.7 or X.25 network or the normal international telephone network.
  • a subscriber to network A intending to roam into the area of the AMPS/D-AMPS system will apply to the operator of network A who will register this fact against the subscriber's data in HLR 40A.
  • the AMPS/D-AMPS system does not involve the use of SIM cards.
  • telephone handsets used in the AMPS/D-AMPS networks incorporate a subscriber identification number (in addition to the publicly known telephone number). Therefore, the operator of network A would temporarily allocate the subscriber a subscriber identification number applicable to network D; for example, this number could be in a batch specifically allocated by the operator of network D to the operator of network A for this purpose.
  • Network A stores this temporary number in HLR 40A in association with the subscriber's network A IMSI.
  • HLR 58 in network D stores the subscriber's temporary network D identification number in association with data indicating that the subscriber is in fact a network A subscriber. On arrival in the United States, the subscriber is provided with, or would previously have been provided with, a telephone handset carrying the temporary network D subscriber identification number.
  • the telephone sends out an appropriate signal to the base station of the cell in which it is located which recognises the telephone as being a normal network D telephone.
  • the base station therefore accesses HLR 58 for the subscriber's data.
  • HLR 58 will respond to the request by recognising that the subscriber is in fact a network A subscriber. It therefore addresses HLR 40A and accesses the subscriber's data which it temporarily stores and also passes it to the local VLR applicable to the cell where the telephone is presently located.
  • the subscriber can now make calls in the usual way. Charging for such calls is accumulated by network D and eventually passed back to the operator of network A which will charge the subscriber in the normal way.
  • a calling party wishes to make a call to the subscriber (who, it is assumed, is temporarily present within network D) .
  • the calling party will use the subscriber's normal network A telephone number.
  • the call will therefore be received by network A and passed to HLR 40A which will recognise that the subscriber is in fact temporarily present within network D and will pass the call to that network.
  • HLR 58 will know the location of the cell in which the telephone is temporarily located and whose VLR will store the subscriber's data.
  • Network D can thus pass a roaming number to network A which can now route the call to the subscriber.
  • Charges for the call accumulated by network A will be billed to the subscriber in the usual way. If network D wishes to make any charges for passing the call on to the subscriber, these will be accumulated against the subscriber's data temporarily stored in network D and eventually passed to network A for onward charging to the subscriber.
  • the visiting subscriber may now roam to another AMPS/D-AMPS network - a network linked to network D via the above-mentioned roaming signal specification IS 41.
  • the roaming subscriber will still have his temporary network D handset.
  • the local AMPS/D-AMPS network will recognise the subscriber as a network D subscriber and, over the IS 41 link, will access HLR 58 in network D for the subscriber's data.
  • network D will access HLR 40A in network A for the subscriber's data.
  • the local AMPS/D-AMPS network will receive the subscriber's data which will be stored in the local VLR applicable to the cell where the subscriber is temporarily located.
  • calling charges will be accumulated via the visited AMPS/D-AMPS network and will be passed back by that network, over the IS 41 link, to network D (because the visited network assumes that the subscriber is a network D subscriber) ' .
  • Network D will in turn pass the charges to network A (together with any of its own charges which it wishes to add).
  • Network A will in turn eventually bill the subscriber (including any of its own charges as well).
  • a calling party wishing to call the subscriber will (as before) use the subscriber's network A telephone number.
  • the call will be received by network A which will note that the subscriber is visiting the AMPS/D-AMPS system and will request a roaming number from network D. From the information within its HLR 58, however, network D will be aware that the subscriber is not in fact present within network D but is within another AMPS/D-AMPS network. Network D now requests a roaming number from this visited network. Network D can now pass this roaming number directly back to network A via the communication link 62. Using this roaming number, the call can be routed by network A directly to the visited AMPS/D-AMPS network and thence to the subscriber's temporary telephone handset.
  • the call is a call from a visiting network D subscriber.
  • the visited network may levy a charge for the call and this will be passed back to network D which (after adding any charges of its own) would then bill it to network A which would in turn eventually bill it to the subscriber.
  • the roaming number provided by the visited AMPS/D-AMPS network can be temporarily stored by network D and, instead, an associated network D roaming number can be generated and transmitted over the communications link 62 to network A.
  • Network A uses this network D roaming number to direct the call over communications link 62 to network D.
  • the latter network uses the temporarily stored roaming number for the visited AMPS/D-AMPS network to pass the call to the subscriber via that network. Again, handling charges from the AMPS/D-AMPS network are generated and passed back to network A and charged to the subscriber in the manner already described.
  • the GSM network operator (for example, the operator of network A) can conclude a separate commercial arrangement with the operator of every AMPS/D-AMPS network, or at least all those AMPS/D-AMPS networks which the visiting GSM subscriber is likely to visit.
  • the network A subscriber intending to roam into the AMPS/D-AMPS system will apply to the operator of network A who will register this fact against the subscriber's date in HLR 40A.
  • the operator of network A temporarily allocates the subscriber a subscriber identification number which is applicable to the AMPS/D-AMPS system but is one in a batch specifically allocated for this purpose - and is such that it is recognised by every one of the AMPS/D-AMPS networks as being a number applicable to another AMPS/D-AMPS network. Therefore, network A stores this temporary number in HLR 40A in association with the subscriber's network A IMSI.
  • the HLR in each of the AMPS/D-AMPS networks stores the subscriber's temporary identification number in association with data indicating that the subscriber is in fact a network A subscriber.
  • the local base station responds to activation of the telephone by accessing the local HLR for the subscriber's data.
  • the HLR will respond to the request by recognising that the subscriber is in fact a network A subscriber and therefore addresses HLR 40A and accesses the subscriber's data which it then temporarily stores and also passes to the local VLR applicable to the cell where the telephone is presently located.
  • the subscriber can now make calls in the usual way. Charging for such calls is accumulated by the visited network and eventually passed back to the operator of network A for onward billing to the subscriber.
  • a calling party wishing to make a call to the subscriber uses the subscriber's normal network A telephone number as before.
  • the call is received by network A and passed to HLR 40A which recognises that the subscriber is in fact temporarily present within a particular AMPS/D-AMPS network and passes the call to that network.
  • HLR 40A which recognises that the subscriber is in fact temporarily present within a particular AMPS/D-AMPS network and passes the call to that network.
  • the latter network's local HLR will know the location of the cell in which the telephone is temporarily located and his VLR will be storing the subscriber's data.
  • the network can thus pass the roaming number to network A which routes the call to the subscriber, charging for the call being billed to the subscriber in the usual way.
  • This mode of operation in which network A has concluded a separate commercial arrangement with every AMPS/D-AMPS network likely to be visited by the visiting subscriber, may be advantageous in simplifying commercial transactions between the networks.
  • All the operations described above envisage that a commercial arrangement exists between a network (e.g. network A) of the GSM system and a network (e.g. network D) , or at least one network, of the AMPS/D-AMPS system. It will be noted that as far as the subscriber's home network is concerned, the HLR of the other network in the commercial arrangement is effectively acting as a VLR.
  • HLR 58 will treat HLR 40A effectively as a VLR - that is, it will treate HLR 40A in substantially the same way as it would treat one of its own VLR's if the subscriber happened to be present and activating a telephone within network D.
  • HLR 40A in this example is treated by network D as effectively being a VLR, HLR 40A is nevertheless treated as an HLR by the VLR in network A corresponding to the cell in which the subscriber is temporarily located.
  • network A will effectively treat HLR 58 as a local VLR - that is, in substantially the same way as it would treat one of the VLR's in its own network.
  • VLR in network D which corresponds to the cell where the subscriber is temporarily located treats HLR 58 as an HLR. The same is true if the network A subscriber roams to another AMPS/D-AMPS network with which the operator of network A has concluded a commercial arrangement.

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  • Mobile Radio Communication Systems (AREA)

Abstract

Un abonné à un service téléphonique mobile évolué AMPS/D-AMPS, éventuellement numérique, voulant se déplacer dans le réseau GSM reçoit une carte à puce GSM temporaire portant un numéro d'identité internationale de station mobile (IISM) qui l'identifie comme visiteur du réseau primaire (A) mais aussi comme étant enregistré auprès du réseau AMPS/D-AMPS (D). Grâce à une liaison de télécommunications (62), on extrait d'un enregistreur de position de rattachement (HLR) (58) des données d'usager du réseau STMP-N et on les stocke dans l'enregistreur de localisation pour visiteurs (VLR) à la cellule appropriée du réseau primaire (A). Des appels peuvent alors provenir de l'abonné ou l'atteindre et lui sont facturés par le réseau AMPS/D-AMPS (D) par la liaison de télécommunications. Si l'abonné se rend dans l'un des autres réseaux GSM (B ou C), chacun d'eux reconnaîtra qu'il est enregistré auprès du réseau primaire (A) et recherchera les données d'abonné dans l'enregistreur de position de rattachement (VLR) propre à ce réseau. A son tour, le réseau primaire (A) obtient les données d'abonné grâce à cet enregistreur (HLR) (58) du réseau AMPS/D-AMPS et les renvoie au VLR du réseau (B ou C) où se trouve cet abonné. Ainsi, le réseau primaire (A) continue à régir les appels reçus ou effectués par l'abonné visiteur.
PCT/GB1994/001355 1993-06-25 1994-06-23 Systemes et procedes de telecommunications WO1995001069A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU69784/94A AU6978494A (en) 1993-06-25 1994-06-23 Telecommunication systems and methods

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9313165A GB2280085A (en) 1993-06-25 1993-06-25 Cellular telephone systems
GB9313165.4 1993-06-25

Publications (1)

Publication Number Publication Date
WO1995001069A1 true WO1995001069A1 (fr) 1995-01-05

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PCT/GB1994/001355 WO1995001069A1 (fr) 1993-06-25 1994-06-23 Systemes et procedes de telecommunications

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AU (1) AU6978494A (fr)
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995032592A1 (fr) * 1994-05-20 1995-11-30 Siemens Aktiengesellschaft Procede pour la transmission d'informations entre des abonnes lors d'un changement de systeme de radiocommunication
WO1996036192A1 (fr) * 1995-05-08 1996-11-14 Oy Nokia Ab Systeme d'abonne de telecommunications mobiles dans un environnement multioperateurs
US5943619A (en) * 1997-04-29 1999-08-24 Ericsson Inc. Shared interworking of subscriber features within mobile telecommunications networks
EP1045605A1 (fr) * 1999-04-15 2000-10-18 Lucent Technologies Inc. Procédé de conversion d'un abonné existant dans un système de communication sans fil
US6453174B1 (en) 1996-03-28 2002-09-17 Markport Limited Roaming interworking gateway for mobile telecommunications systems

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321165A (en) * 1994-04-05 1998-07-15 Motorola Inc Methods and apparatus for call handover between different mobile radio networks
WO1996020574A1 (fr) * 1994-12-23 1996-07-04 Nokia Telecommunications Oy Methode d'acheminement d'un appel international vers un abonne mobile a l'etranger
GB2315387B (en) * 1996-07-16 2000-12-06 Motorola Ltd Method and apparatus for accessing a plurality of networks
EP0786915B1 (fr) * 1996-01-23 2004-12-29 Kokusai Denshin Denwa Co., Ltd Dispositif d'identification d'un abonné/terminal mobile
FI100495B (fi) * 1996-02-09 1997-12-15 Nokia Telecommunications Oy Suorakanavalla liikennöivän matkaviestimen läsnäolon selvittäminen
US5862481A (en) * 1996-04-08 1999-01-19 Northern Telecom Limited Inter-technology roaming proxy
US5867788A (en) * 1996-06-03 1999-02-02 Ericsson Inc. Coverting a routing address within a telecommunications network
CA2260108A1 (fr) * 1996-07-10 1998-01-15 American Pcs Communications, Llc Unite passerelle
GB2322998A (en) * 1997-02-20 1998-09-09 Vodafone Ltd Method of Interconnecting Communication Networks
PT923844E (pt) * 1996-09-04 2002-11-29 Swisscom Mobile Ag Processo itenerancia e correspondentes dispositivos
US6097950A (en) * 1996-12-27 2000-08-01 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for global roaming in a cellular telecommunications system
US6064875A (en) 1997-01-31 2000-05-16 Usa Telecommunications Services, Inc. Wireless communications system and method of operation for reducing fraud
GB2322521B (en) * 1997-02-24 2001-06-27 Vodafone Ltd Telecommunication access systems and methods
KR100300629B1 (ko) * 1998-11-07 2001-09-07 윤종용 코드분할다중접속방식 서비스지역에서 심카드를 사용하기 위한시스템 및 방법
US6298232B1 (en) 1999-01-15 2001-10-02 Telefonaktiebolaget Lm Ericsson (Publ) Voice mail service notification between mobile systems
JP4700197B2 (ja) * 1999-04-12 2011-06-15 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Ｕｍｔｓシステムにおけるゲートウェイロケーションレジスタ
US7281137B1 (en) * 1999-07-02 2007-10-09 Nokia Corporation Authentication method and system
JP2001086546A (ja) 1999-08-23 2001-03-30 Swisscom Ag 電気通信ネットワークのための信号送信方法および変換デバイス
US6308067B1 (en) 1999-11-30 2001-10-23 At&T Corp. Wireless communications system and method of operation for reducing fraud
BR0107684A (pt) 2000-01-21 2005-01-11 Globalstar Lp Tradução de tìtulo pseudoglobal para "roaming" internacional de assinantes da ansi-41
GB2359451A (en) * 2000-02-15 2001-08-22 Motorola Inc Communication network including a virtual terminal
NO313950B1 (no) * 2000-03-14 2002-12-30 Ericsson Telefon Ab L M Kommunikasjonsidentifikatormetode
GB2378094B (en) * 2001-07-27 2004-12-22 Vodafone Plc Telecommunications systems and methods and smart cards for use therewith
GB0605283D0 (en) 2006-03-16 2006-04-26 Ghost Telecom Ltd Method and architecture(s) for a virtual wireless network(s) and its interfacing and interconnecting with wireless network(s) and public access
EP2096884A1 (fr) 2008-02-29 2009-09-02 Koninklijke KPN N.V. Réseau de télécommunication et procédé d'accès de réseau en fonction du temps

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037069A2 (fr) * 1980-03-28 1981-10-07 Siemens Aktiengesellschaft Réseau radio mobile avec dispositifs pour localiser des abonnés radio mobile étrangers
EP0379642A2 (fr) * 1988-09-19 1990-08-01 Gte Telecommunication Services Incorporated Système pour l'extension d'un service de radio-téléphonie mobile cellulaire
EP0512962A2 (fr) * 1991-02-05 1992-11-11 Telefonaktiebolaget L M Ericsson Réseau cellulaire de communications avec points d'interrogation de l'abonné

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307400A (en) * 1991-11-25 1994-04-26 Telefonaktiebolaget L M. Ericsson Call routing in mobile telephone systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037069A2 (fr) * 1980-03-28 1981-10-07 Siemens Aktiengesellschaft Réseau radio mobile avec dispositifs pour localiser des abonnés radio mobile étrangers
EP0379642A2 (fr) * 1988-09-19 1990-08-01 Gte Telecommunication Services Incorporated Système pour l'extension d'un service de radio-téléphonie mobile cellulaire
EP0512962A2 (fr) * 1991-02-05 1992-11-11 Telefonaktiebolaget L M Ericsson Réseau cellulaire de communications avec points d'interrogation de l'abonné

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
D R. WILSON: "Signaling System No 7, IS-41 and Cellular Telephony Networking", PROCEEDINGS OF THE IEEE, vol. 80, no. 4, April 1992 (1992-04-01), NEW YORK US, pages 644 - 652, XP000304355 *
I. BRINI ET AL: "International roaming in digital cellular networks", CSELT TECHNICAL REPORTS, vol. 20, no. 6, December 1992 (1992-12-01), ITALY, pages 531 - 536 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995032592A1 (fr) * 1994-05-20 1995-11-30 Siemens Aktiengesellschaft Procede pour la transmission d'informations entre des abonnes lors d'un changement de systeme de radiocommunication
US5898922A (en) * 1994-05-20 1999-04-27 Siemens Aktiengesellschaft Mobile radio system
WO1996036192A1 (fr) * 1995-05-08 1996-11-14 Oy Nokia Ab Systeme d'abonne de telecommunications mobiles dans un environnement multioperateurs
US6324394B1 (en) 1995-05-08 2001-11-27 Oy Nokia Ab Mobile telecommunication subscriber system in a multi-operator environment
US6453174B1 (en) 1996-03-28 2002-09-17 Markport Limited Roaming interworking gateway for mobile telecommunications systems
US5943619A (en) * 1997-04-29 1999-08-24 Ericsson Inc. Shared interworking of subscriber features within mobile telecommunications networks
EP1045605A1 (fr) * 1999-04-15 2000-10-18 Lucent Technologies Inc. Procédé de conversion d'un abonné existant dans un système de communication sans fil
US6349205B1 (en) 1999-04-15 2002-02-19 Lucent Technologies Inc. Method for converting an existing subscriber to a wireless communications system

Also Published As

Publication number Publication date
GB9313165D0 (en) 1993-08-11
GB2280085A (en) 1995-01-18
AU6978494A (en) 1995-01-17

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