MXPA99003861A - System and method for improved paging and location updating of mobile subscribers - Google Patents

Abstract

A system and method for maintaining the home and visiting location records of a subscriber in a single-, dual- or multi-mode telecommunications system. Upon leaving the home system, an associated record is made of the new location within the visiting system, and a timer initiated. Paging of the subscriber is routed according to the presence of the associated record and unexpired timer, indicating the visiting system, and expired timer, indicating return to the home system.

Description

"SYSTEM AND METHOD FOR IMPROVED UPDATING OF RADIOLOCATION AND LOCATION OF MOBILE SUBSCRIBERS" BACKGROUND OF THE INVENTION FIELD OF THE INVENTION The present invention relates generally to a telecommunication system and a method for upgrading location and radiolocation, particularly, to a telecommunication system and method for improved location update and paging of radiolocation within a telecommunications system. simple, double or multiple mode.

BACKGROUND AND OBJECTS OF THE PRESENT INVENTION The evolution of wireless communication - over the last century, since Guglielmo Marconi's demonstration in 1897 of the radio's ability to provide continuous contact with ships sailing on the English Channel, has been remarkable. Since the discovery of Marconi, new methods of wired and wireless communication have been adopted by people throughout the world. This evolution has accelerated, particularly over the last ten years, during which the The mobile radio communications industry has grown by orders of magnitude, provisioned through numerous technological advances that have made the portable radio equipment smaller, cheaper and more reliable. The exponential growth of mobile telephony will continue to increase in future decades as well, since this wireless network interacts with and eventually exceeds existing wired networks. Many telecommunications systems have been designed to implement wireless telephony, e.g. , the cellular system _ of Advanced Mobile Phone Service (AMPS) in the United States, the Nordic Mobile Telephone System (NMT), in Northern Europe, and more recently the Global System for Mobile Communications (GSM) and the " DCS 1800 digital systems. All of the aforementioned systems are terrestrial systems, that is, they have ground-based as opposed to satellite-based transmissions: The Association of the Asian SouthEast Nation (ASEAN), the Cellular Satellite System (ACeS) in this satellite-based Digital Mobile Satellite (DMS) system provides telephone coverage through the use of a geo-stationary satellite.Although it is still in the specification stage, the ACeS is essentially an adaptation of the popular GSM specification. Expected to be deployed across South East Asia, the ACeS would provide coverage to areas that have limited land and cell line infrastructure, allowing the use of portable pocket telephones throughout Asia. When deployed, the satellite footprint of the ACeS System will allow a service from India to Japan and from North China to Indonesia, using a large number of zone beams. In geographical areas covered by both a land-based system and a satellite-based system, subscribers to a terrestrial system such as _GSM and a satellite system, such as ACeS, may need to switch to another transmission "mode". . Accordingly, mobile phones of subscribers need to have dual mode capability to operate and switch between the two modes of the two systems. For example, in a satellite base system such as ACeS, the mobile unit can be taken to a large building or other structure or tunnel that interferes with or blocks satellite communication. If it is a dual-mode device, the mobile phone can detect a signal interference problem and automatically switch to the terrestrial system offering a better signal. On the contrary, a GSM user can switch to the ACeS in those areas, v. g. , the undeveloped areas, with poor infrastructure to support GSM transmissions. The interaction pairs of the terrestrial-based and satellite-based systems, such as GSM and ACeS, advantageously offer this capability in a dual manner. A problem has been raised, however, - in the interaction between these diverse systems, as a result of attempts by ACeS designers to adhere to GSM standards. One of these problems is that during the transfer from one system to the other, e.g. , from ACeS to GSM, the GSM system does not handle the subscriber registration of the ACeS subscriber differently than that of the GSM subscriber. Therefore, instead of distinguishing the visiting mobile user, as a non-GSM user, the GSM system treats the visiting ACeS subscriber and his mobile registration information as an extension of the GSM system and, in accordance with the protocol of GSM, the location update information is transmitted back to the ACeS system, overwriting the mobile registration therein with the GSM location information. Since the ACeS registration information has been deleted, during the return of the mobile station from GSM to ACeS, the re-registration in the ACeS system is necessary with the exchange of information required between the mobile station and another based equipment. of earth through the satellite in orbit, causing delays and increased signal traffic within the ACeS. This generated location update traffic, however, has the ability to exceed the calculated signal recording capacity of the ACeS network, and would place a serious load on the entire system. Alternatively, if the location update traffic is restricted, the mobile stations would then be out of range and the radiolocation operation of the ACeS and another satellite network would be deficient. This problem is worsened by the fact that GSM is an established system, making any modifications to it difficult, unconventional and expensive, since DMS systems such as ACeS are still in the However, the solutions to this and other interaction problems are best handled through modifications to these DMS systems currently defined in a more flexible manner, in addition, because the difficulties of the aforementioned communications within the DMS systems and subscribers in single-mode systems such as ACeS, may encounter the same problems along the edges of location or service areas within the ACeS, whereby traffic to through the air of no excessive speech can overload the system. Accordingly, an object of the present invention is to modify the DMS systems such as the currently developed ACeS system to solve or overcome the signal traffic problems described above caused by increased location updates. A further object of the present invention is to modify the DMS systems such as ACeS, to decrease the location updates by maintaining a second location address of an ACeS subscriber, wherein the location of the subscriber's house or service area is preserved while that the subscriber visits another location or service area within the DMS, or another system, where traffic through the non-speaking air should be limited.

A further object of the present invention is to decrease location updates by maintaining dual location addresses of a subscriber in a dual-mode telecommunications system, such as the satellite-based ACeS pair and the land-based GSM, where the home address of the subscriber in his home system is kept while the subscriber visits the other system.

COMPENDIUM OF THE INVENTION The present invention is directed to a system and a method for maintaining the home and visitor location records of a subscriber in a simple, double_ or multiple mode telecommunication system. When leaving the house system, a record is made, associated with the new location within the visiting system, and a synchronizer is started. The radiolocation of the subscriber is routed according to the presence of the associated record of the synchronizer that has not expired, indicating the expired synchronization visitor system indicating a possible return to the home system. A more complete appreciation of the present invention and the scope thereof can be obtained from the accompanying drawings which are briefly summarized below, the following detailed description of the presently preferred embodiments of the invention and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a functional diagram of a conventional double mode telecommunications system and method; Figure 2 is a functional diagram of a double mode telecommunications system and a method of according to the present invention which is different from Figure 1 since the double location records and a synchronizer are maintained in the home location register for each subscriber; and Figure 3 is a flow chart that represents the steps followed by the system. telecommunications to manage the different access operations of the system.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES __ The present invention will now be described more fully below with reference to the accompanying drawings, in which the preferred embodiments of the invention are shown. This invention, however, may be encompassed in many different forms and should not be construed as limited to the embodiments set forth herein; instead, these modalities are provided so that this disclosure is complete and complete, and fully conveys the scope of the invention to those skilled in the art.

Referring now to Figure 1 of the drawings, there is illustrated a conventional telecommunication system 8 which offers double-mode capability between two different networks, i.e., a first Service Area (SAI) that I know "relates to a first digital communications network and a second Service Area (SA2) that is related to a second and different digital communications network, for example, the first UPS network can be a system based on Of course, "it must be understood that the two networks of preference are essentially co-terminal, that is, they are above and complement one another. with the other, vg , the footprint of the ACeS system covers essentially the same geographical territory (or a discrete portion thereof) of the GSM infrastructure, and a dual mode subscriber, having the required double-mode telephone, can be switched between them. It should also be understood that the two "networks" can instead constitute two different service areas and other geographical divisions within a given system, e.g. , two service areas of a satellite-based system or a ground-based system, as will be described more fully below. With further reference to FIG. 1, a mobile station 10 is shown, such as a dual-mode cellular telephone that has been switched from its operation within the first digital network UPS (ACeS) to the second network SA2 (GSM). It will be understood that even when within the SAI or ACeS mobile station 10 communicated with the first UPS network through at least one Mobile Services Switching Center (MSC), therein, such as MSC 12, and s ~ Associated Visitor Location Register (VLR) 14. In particular, the station 10 communicated with a base station 16 within the UPS network and through a link 18 with MSC 12 and VLR 14, which is a database containing information about all the subscribers located in current affairs and assets within your service area, vg , UPS or a portion thereof, such as a plurality of conventional location areas and cells therein. After switching to or transferring to SA2 (GSM), as shown in Figure 1, the mobile station 10 no longer communicates with the first UPS network (ACeS) and instead switches to another station 20 base and link 22 with another MSC 24 and VLR 26 associated with the GSM network. It should be understood that the mobile station 10 communicates with the base stations over the air by means of a satellite (not shown) in the case of the ACeS base station 16, and directly in the GSM base station 20, as shows in the figures. In the system 8 of double mode, one or several, of the Home Location Records (HLR) 28 maintain a database of information about all the subscribers registered in the system, that is, all subscribers within the SAI and SA2 double, co-terminal networks. Accordingly, the user profiles, the location of the current subscriber and other information are stored within a HLR 28 determined for each subscriber of the double mode. It should be understood that in one mode of a simple mode of the present invention, the HLR database 28 contains information about all subscribers within the single mode from the multiple service area system. With reference again to Figure 1, for example, before switching to SA2 (GSM), HLR 28 contained a field within the record information about the current location and known to the last subscriber, ie the geographic location within ACeS, about the manner in which the mobile station 10 of the subscriber should be contacted within the ACeS network. This location information of the preferred subscriber is stored within the HLR 28 in a location register 28A therein, shown in Figure 1. During the switchover, this information must of course be modified so as to maintain contact with the station. mobile 10. It should also be understood that VLRs 14 and 28, each linked to one or more of the MSCs, temporarily store subscription data for those subscribers and all currently in the service area of the corresponding MSCs, as well as retaining the data on their location at a more precise level than the HLR 28. It can also be understood that when the first mobile station 10 is connected to "the pair of MSC 24 / VLR 26 of the SA2 network the VLR26 checks the data about the specific subscriber from his home location register, ie, from the HLR 28 in Figure 1. The VLR 26 is simultaneously updated the HLR 28 in which refers to the current location of the mobile station 10 within the respective network, SA2 or ACeS This Update and Location Request (LU) is sent mediane VLR 26 to HLR 28, which then updates its registration, including the registration 28A for location, for that subscriber correspondingly.Preferably, the update location information sent to HLR 28 contains the identity of MSC 24 / VLR _., Ie, an indication of the specific geographic Service Area_ of The operator providing the service, which is then stored in the location register 28A within the HLR 28. Normally, the new Service Area Information (SAI) overwrites the old SAI data stored in the 28A register in the HLR 28. With further reference to the conventional telecommunication system 8 shown in Figure 1, a series of numbers each representing a corresponding step, as will be described below. The mobile station 10, when switching to the new service area SA2, recognizes the change and initiates an update request (step 1 in circle as illustrated). Base station 20 receives the transmitted request and sends it to MSC / VLR serving the area, MSC 24 and VLR 26, for processing. After determining that the mobile station 10 is new to the region controlled by MSC 24 / VLR 26, ie, that the subscriber is not currently located and is active within the region covered by MSC / VLR, the VLR 26 sends the update request, including LU for it, to HLR 28 (step 2 in a circle as illustrated). The HLR 28 then processes the update request and overwrites the "old" UPS in register 28A, that is, the identity of the service area within the previously used UPS network (GSM), with the new UPS for the SA2 network ( ACeS) (step 3 as illustrated). Acceptance of the update request is then sent via the HLR 28 back to MSC 24 / VLR 26 (step 4 as illustrated), to the base station 20 and then to the mobile station 10 (step 5 as shown in FIG. illustrated). The HLR 28 also informs the "old" MSC / VLRs, ie the MSC 12 and the VLR 14 of the UPS network (GSM), of the change from the mobile station 10 to the new ones MSC / VLR (step 6 as illustrated) and to cancel the subscriber information therein. It should be understood that the switches as discussed above, that is to say, from the GSM network to an ACeS network, are treated the same as they have been switched between the discrete cells or location areas within the GSM system. , and the duality between the two modes in the dual-mode system shown in Figure 1 is supported by the close adhesion of ACeS to the GSM standards.10 Correspondingly, in the case of the conventional dual mode telecommunications system 8 shown in FIG. Figure 1, the mobile station 10 is now radiolocated only within the specified region within the 28A register of the HLR 28 (and the VLR-inside information) 26), that is, an incoming call is processed within the new area or SA2 only (step 7 as illustrated). Therefore, it must be understood that even if the subscription can double, radiolocation is limited to only one of the systems doubles at a time, particularly, to the address of the subscriber stored in the location register 28A. As far as the system is concerned, the subscriber can only be in the specific system specified in register 28A and no radiolocation is carried out in the system alternative double associated with it.

Also, during the return of the mobile station 10 to the original service area, i.e., UPS, the information of the "old" subscriber in the HLR 28 and in the MSC 12 / VLR 14 is deleted, having been canceled in response to the notification of change of HLR 28 (step 6 described above). Therefore, the mobile station 10 must be re-subscribed to the UPS network (GSM) to be reached there (and not be subscribed in SA2). This, of course, means that the HLR 28 must use a geographically local MSC / VLR which may be the original MSC 12 and VLR 14, which will again update the location record 28A within the HLR 28, as described above. , sending the appropriate UPS (step 8 as illustrated). In this way, the mobile station 10 can now be reached only within the UPS (or GSM) network.

Therefore, it is clear that subscribers within a dual-mode telecommunication system 8 can create a large amount of location update traffic under different circumstances and, as discussed, can still overcome the ability to send signals further. limited of an ACeS system. So far, this compatibility problem has not been addressed and no one has indicated a solution to this problem until now. The subject matter of the present invention correspondingly is directed to this solution.

Also, due to the aforementioned limitations in signal capacity may be present within the single-mode DMS system, the subject matter of the present invention is also directed to this problem as well. Shown in Figure 2, there is an improved telecommunication system 30 similar to the dual-mode system B shown in Figure 1 and which shares many reference numbers thereto. Instead of completely overwriting the "old" subscription record, particularly the UPS of the previous system, however, HLR 28 in accordance with the present invention maintains the old UPS so that when it returns to the user, such as at home or to the system to which you subscribe, it is unnecessary to re-register. In this way, the location update traffic in an interaction system, such as GSM or ACeS, or in a generic manner SAI and SA2, which are illustrated in the figures, is minimized. As in Figure 1, a series of numbers are illustrated in Figure 2, each number representing a corresponding step as will be described below. In the conventional system 8, the mobile station 10 recognizes a switch to a new system, that is, from UPS to SA2, and initiates an update request (step 1 in a circle, as illustrated). The VLR 26 then sends the update request including the new UPS, to the HLR 28, as described above (step 2). However, instead of processing and overwriting the "old" UPS and other information in the location register 28A, as in the conventional embodiment, the HLR 28 of the present invention stores the "new" UPS and related information in a register 28B of separate location (step 3), keeping the "old" information intact for later reference such as during the return to the home system. The acceptance is then sent via the HLR 28 to the MSC 24 / VLR 26 (step 4) and to the mobile station 10 (step 5). No cancellation message is sent to the MSC 12 / VLR 14, however, as in Figure 1. Accordingly, the mobile station 10 can now be localized within either or both systems through the respective pairs of MSC / VLR in the double system, and the corresponding base stations in them (step 6). During the return of the mobile station 10 to the original or home service area, i.e., the UPS, the "old" subscriber information in the MSC 12 / VLR 14 is still there. Therefore, the re-subscription is unnecessary and the mobile station 10, being known, can capture from where it was left. Should It should be understood, however, that due to the movement of the subscriber while it is within the co-terminal network, ie SA2, the mobile station 10 can now be geographically located remotely from the position in the UPS where it was when connecting to SA2. Therefore, a different MSC / VLR or a different base station _ (or ~ cell) may be used within the UPS, as will be understood by a person skilled in the art. A specific dual mode ACeS / GSM mobile station 10 (or other satellite-terrestrial station) can have a home subscription in any system, managed by an HLR 28 where the current UPS and other information is stored. A mobile station 10 served by a non-preferred network, say a mobile station with an ACeS-based subscription operating in GSM, will preferably periodically try to return to or receive the service within the preferred network, ACeS, the periodicity being implemented by a non-preferred internal network synchronizer within the mobile station 10. The time period in the internal synchronizer is set to a certain time of visitation, which, during the expiration of the same, the mobile station 10 will try to automatically return to the home network. It should be understood, however, that the subscriber can manually initiate the return to the home system at any time.

In accordance with the present invention, when a non-preferred network is used that is, an associated UPS is stored in the register 28B of the HLR 28 for that subscriber, the HLR_28 initiates an associated synchronizer 32 for this subscriber, e.g. , towards a failure visitation time by which upon expiration thereof, the mobile station will have returned home as will be described more fully below. For a subscription based on. satellite, such as a subscriber within ACeS, when the mobile station 10"visits and registers in the alternate terrestrial mode network such as GSM, the UPS in GSM is stored within the associated register 28B in HLR 28 and the synchronizer_32 is made It must be understood - the internal synchronizer within the mobile station 10 also starts operating as described, when the mobile station returns to ACeS after the expiration of the aforementioned period of time set in the - synchronizer 32, the internal or other synchronizer, the UPS of the ACeS remains in the register 28A and the LU is not necessary, therefore, it should be understood that those mobile stations 10 having associated registers 28B in the HLR 28 and times of non-zero that remain in the synchronizer 32, are more likely to visit the network of GSM and they are radiolocated first there that ACeS does. Alternatively, mobile stations with associated registers 28B and expired times are assumed to have returned to ACeS and are radiolocated there first and then in GSM. The synchronizer 32 preferably is restarted only after a subsequent successful registration in GSM. If at any time the mobile station 10 responds to a radiolocation, it initiates a call or causes a new LU. in the ACeS network, then the associated register 28B is preferably released and the synchronizer 32 is cleared if it is still running. Then, the mobile station 10 becomes. radiolocates only in the ACeS network. In this way, the number of LUs within ACeS or other network of limited capacity are kept to a minimum while the subscriber's radiolocation capability is maintained at all times. With the appropriate setting of the synchronizer 32 of the non-preferred network, (and the internal synchronizer as well), the dual-mode mobile stations 10 will be radiolocated to only "one of the dual networks most of the time, i.e., the radiolocation system correctly selects the network currently used It should be understood that the length of time in the synchronizer 32 can be variable and could be a network decision based on the coverage and traffic characteristics of ACeS and local GSM and disseminated as a parameter of ACeS. The time of the internal synchronizer may also vary accordingly. A flow chart illustrating the steps for processing updating the location and radiolocation of -according to a satellite subscription mode of the present invention is shown in Figure 3. As will be discussed in more detail, the flowchart describes three different operations carried out in. the double-mode telecommunications system, such as system 30: location update requests, outgoing calls and incoming calls. Accordingly, when the HLR 28, as shown in Figure 2, receives the information (box 40), a determination is made (box 42) as to the kind of information received and the control transferred to the appropriate operation, is say, the aforementioned location update request (box 44), the outbound call (box 54), and the incoming call (box 56). If the HLR 28 receives an information about the location update request (step 2 as illustrated in _la -Figure 2), the control in Figure 3 is switched from box 42 to box 44. If the station mobile for that ACeS subscriber is visiting another system, ie GSM, then the new location information (eg, the UPS, is stored within the associated 28B register within the HLR 28 (box 46). for the old or "home" ACeS network remains stored in the register 28 A. The HLR 28 then adjusts and starts the operation of the associated non-preferred network synchronizer 32 described above (box 48). mobile is within the home ACeS network, then the old ACeS UPS information in the home register 28A is overwritten (box 50) with the new ACeS data, and any associated UPS information in the associated 28B register is released and the synchronizer 32 clears (box 52-) In any case, the HLR 28 of the system 30 then waits for other information, if the HLR 28 can receive and interpret the information correlated with an outgoing call from within of the ACeS network, such as from the mobile station 10 in SA2 in Figure 2, then, as above, any visit information is now insignificant and the associated UPS information in the associated register 28B is released from the synchronizer 32 is cleared ( box 54). The HLR 28 then waits for other information.

Finally, if the HLR 28 receives an incoming call, the control is transferred to the box 56 where a determination is made as to whether the HLR 28 contains an associated UPS in the register 28B. If not, then the subscriber will have a greater possibility of still remaining within ACeS and will be radiolocated in the home ACeS network alone (box 58). If the register 28B contains UPS information, however, then the synchronizer 32 is examined (box 60). If the synchronizer 32 has not yet expired, that is, the subscriber has only recently visited the alternative GSM network, then the subscriber will have a greater tendency to remain there and will be radiolocated there first (box 62). This offers an advantage in possibly locating the subscriber in the GSM network before initiating a radiolocation in the ACeS system of more limited capacity. The control is then transferred to box 64 where a determination is made as to whether the radiolocation previously cited in this visiting _GSM network was successful. - If the radiolocation failed, then the subscriber is radiolocated in the home ACeS network (box 66) and the control is transferred to box 68 for a determination on the success of home radiolocation. If it is not satisfactory, then the HLR 28 sends an error or no-connection message back to the calling party and waits the next command. However, ~~ if the home radiolocation was successful (box 66), that is, the mobile station 10 is no longer visiting the GSM and has returned to the home system, then any associated UPS information in the associated 28B register it is released and the synchronizer 32 clears (box 70). The HLR 28 then waits for another command. Alternatively, if the radiolocation in the visited GSM network was successful in box 64, then the synchronizer 32 will start (box 72). However, if the synchronizer 32_ has expired (box 60), then the assumption is that the subscriber and the mobile station 10 have returned either manually or automatically, respectively, to the home system and are no longer visiting. Accordingly, the subscriber is first radiolocated in ACeS (box 74) and the control "is transferred to box 76 where a determination is made as to whether the home radiolocation was successful, if it was not, then the subscriber is radiolocated to GSM (box 78) and the control is transferred to box 80 where a determination is made of whether the paging radiolocation was satisfactory.If the paging radiolocation was not satisfactory, then the HLR 28 sends an error message or no connection back to the part where the call and wait for the new command. However, if the visit radiolocation was successful, that is, the mobile station 10 is still in GSM, then the synchronizer 32 is re-initiated (box 82), and the HLR 28 waits for another command. _ Alternatively, if the home radiolocation is satisfactory (box 76). that is, the mobile station 10 has returned home., then the information of the associated UPS in the associated register 28B is released (box 84), and the HLR 28 waits for another command. For a land-based subscription, such as a GSM-based subscriber who visits ACeS, however, the situation is more difficult since modifications to GSM standards can not be made. Therefore, the HLR 28 and the standards of the MSCs and protocols in the GSM network can not be changed. Even though these GSM-based subscriptions are expected to be minority, however, several approaches are possible. One of these approaches for a mobile station of a GSM-based subscriber that temporarily roams towards ACeS or any other system a. The satellite base can start the operation of the synchronizer 32 and not address any location updates within the system that ACeS does until the time in the synchronizer 32 has elapsed. A restriction Further, it could be that at least one previous attempt to return to GSM has failed and only when these two conditions are satisfied to carry out the LU. It can be understood, however, that in this case, and say, of no contact with the GSM home system, the mobile station 10 will not be able to radiolocate until the LU of the ACeS is carried out. When the LU is carried out of course, the mobile station 10 is instantaneously capable of radilocalizing. Location updates can also be controlled through a variable or parameter of the broadcast system, which can be used to train or disable the LUs for visitors, that is, non-home subscribers, depending on the traffic conditions. For example, if an ACeS system has heavy traffic and the LUs are annoying, then the system parameter could prevent the LUs of the visitors until the system is able to handle the load. Alternatively, the training / incapacitation system parameter can be used in conjunction with the synchronizer 32 described above. If incapacitated, a visiting subscriber within the ACeS will not be able to register until the synchronizer 32 has elapsed and at least one attempt of the mobile station 10 to return to the GSM has failed. If trained, visitors Based on GSM, an LU will be allowed to enter the system, if necessary. This approach allows maximum flexibility and is easy to implement as an ACeS mode functionality in a dual mode mobile station. It should be understood that the aforementioned system parameter may be stored in a registry or other data storage area within the mobile station 10 to regulate the accessibility of the location updates while the mobile station 10 is in a visitor system. . It should be understood that the interaction pair used to illustrate the double-mode mode described above of the present invention, ie, ACeS and GSM, are exemplary only and that other interaction pairs are possible, eg, ACeS and AMPS or any other pair. It should also be understood that the subject matter of the present invention solves the difficulties of sending signals due to excessive updates and location in an alternative mode and in a single mode, such as ACeS or any system where in large numbers of these location updates should compromise the system. Therefore, with reference usually to Figure 2, the UPS and SA2 can represent location areas or other geographic divisions of the system, e.g., areas of conventional locations or cells, within which a subscriber may roam in that system. Furthermore, it should be understood that the subject matter of the present invention is designed to solve or overcome the difficulties of sending signals caused by excessive location updates in any single, double or multiple mode system where at least one of the systems it has the capacity to send limited signals for non-speech communications. Even though satellite-based systems mainly encounter these difficulties at present, any of these limited systems in a single, double or multiple situation, whether satellite, terrestrial or combinations thereof, must be understood to remain within the scope of this exhibition. The foregoing description is of the preferred embodiments for implementing the invention, and the scope of the invention will not necessarily be limited by this description The scope of the present invention is instead defined by the following claims:

Claims (47)

CLAIMS:

1. A telecommunications system having a plurality of separate areas therein, a house location record for the system and the handling of the information of the plurality of areas, and a mobile station capable of operating within those areas, one of the areas is a home area on which the mobile station is based, the location information of the mobile station within the home area is stored in a location record within the home location register, the circuit within the home home location, and the mobile station to update the location, the circuit comprising: an associated location record within the home location register for storing the location information transmitted by the mobile station visiting another of the plurality of areas.

2. The telecommunications system in accordance with claim 1, wherein the system is a system in a simple manner that covers or covers the plurality of areas.

3. The telecommunications system according to claim 2, wherein the system in a simple way is a digital mobile satellite system.

4. The telecommunications system according to claim 3, wherein the digital mobile satellite system is an ACeS system.

5. The telecommunications system according to claim 2, wherein the system is a ground based system.

The telecommunication system according to claim 5, wherein the ground-based system is a GSM system.

7. The telecommunication system according to claim 1, wherein the system is a dual mode system, a first mode of the system corresponds to the home area on which the mobile station is based, and the second mode of the system corresponds to another area.

The telecommunication system according to claim 7, wherein the other area is essentially co-terminal with the home area.

9. The telecommunications system according to claim 7, wherein the home area corresponds to a digital mobile satellite system.

10. The telecommunication system according to claim 9 wherein the digital mobile satellite system is an ACeS system.

11. The telecommunications system according to claim 7, wherein the other area corresponds to a digital mobile satellite system.

The telecommunication system according to claim 7, wherein the other area corresponds to a ground based system.

The telecommunications system according to claim 12, wherein the ground-based system is a GSM system.

The telecommunication system according to claim 7, wherein the home area corresponds to a ground based system and the other area is a digital mobile satellite system -

15. The telecommunications system according to claim 14 , where the ground-based system is a GSM system and the digital mobile satellite system is an ACeS system.

16. The telecommunication system according to claim 1, wherein the system is a multiple-mode system, a first mode of that system corresponds to a home area on which the mobile station is based, and a plurality of others. modes each one corresponding to another respective area.

17. The telecommunications system according to claim 16, wherein at least

one of another of the plurality of respective areas is essentially co-terminal with the house area.

18. The telecommunication system according to claim 1, wherein the location information comprises a service area identity.

19. The telecommunication system according to claim 1, further comprising: an associated synchronizer within the home location register being set by the associated synchronizer during the transfer of the mobile station from one home station to another area.

20. The telecommunications system according to claim 19, wherein the mobile station initiates the return to the home area when the time of the associated synchronizer has expired.

21. The telecommunications system "according to claim 19, wherein the radiolocations from the mobile station are sent by the house location register through another area when the associated synchronizer is operating. according to claim 21, wherein the subsequent radiolocations to the mobile station are

send via the home location register "through the home area

23. The telecommunication system according to claim 19, wherein the radio communications to the mobile station are sent by registering the home location through the area

24. The telecommunication system "according to claim 23, wherein the subsequent radiolocations to the mobile station are sent by the house location register through another area.

25. The telecommunications system according to claim 1, further comprising an internal synchronizer within the mobile station, the internal synchronizer is adjusted during the transfer of the mobile station and from the home area to another area, where the mobile station starts the return to the home area when the internal synchronizer time has expired.

26. The telecommunications system according to claim 1, wherein the home location register sends radiolocations to the

mobile station through another area when present-the associated location record. The telecommunication system according to claim 1, wherein the system includes a system parameter therein that corresponds to the system's ability to handle a location update, the system parameter when it is set preventing the station from Mobile carries out a location update when it leaves the home area to another area.

28. A method for updating the location of a mobile station in a telecommunications system, which has a plurality of separate areas therein, the system includes a home location register that handles the information of the plurality of areas, one of the areas correspond to a home area on which the mobile station is based, the location information of the mobile station within the home area that is stored in a location record within the home location register, the mobile station being capable of operating within the plurality of separate areas, the method consisting of the steps of: transmitting, during a switch by the mobile station from the home area to another of the plurality of areas, from the mobile station to the home

locating information location house of the mobile station within another area; and storing, within the home location record, the location information of the other area in an associated location record therein.

29. The method according to claim 28, further comprising the step of: resuming, during a switch through the mobile station from another area to the home area, the operation of the mobile station within the home area using the information of location stored in the location record.

The method according to claim 28, wherein the home location register includes therein an associated synchronizer, the associated synchronizer is adjusted during the transfer of the mobile station from the home area to another area, where the mobile station starts - the return of the home area when the time in the associated synchronizer _ has expired.

31. The method according to claim 28, wherein the home location register includes therein a synchronizer associated with the associated synchronizer is adjusted during the transfer. from

mobile station from the home area to another area, which further comprises the step of: radiolocalizing, through the home location register _, to the mobile station within another area when the associated synchronizer is operating. The method according to claim 31, wherein the subsequent radiolicalization to the mobile station is sent by the house location register through the home area.

33. The method according to claim 28, wherein the home location register includes in it an associated synchronizer, "the associated synchronize is adjusted during the transfer of the mobile station from the home area to another area, which also comprises the step of: radiolocalizing, through of the home location register, the mobile station within the home area when the time has expired in the associated synchronizer

34. The method according to claim 33, wherein the subsequent radiolocation to the mobile station is sent by the Home location registration through "Other area.

35. The method according to claim 28, wherein the mobile station includes in the

same as an internal synchronizer, the internal synchronizer is adjusted during the transfer of the mobile station from the home area to another area, which also includes the step of: returning to the home area when the time in the internal synchronizer has expired.

36. The method according to claim 28, wherein the system is a system in a simple manner that covers or covers the plurality of areas.

37. The method according to claim 36, wherein the simple mode system is a digital satellite system.

38. The method according to claim 37, wherein the digital replaced system is an ACeS system.

39. The method according to claim 28, wherein the telecommunications system is a dual-mode system, a first mode of that system corresponds to the area of the house on which the mobile station is based, and a second system mode corresponds to to the other of the plurality of areas.

40. The method according to claim 39, wherein the other area is essentially co-terminal with the house area.

41. The method according to claim 39, wherein the home area corresponds to a digital mobile satellite system and the other area is a land-based system.

42. The method according to claim 41, wherein the digital mobile satellite system is an ACeS system and the ground-based system is a GSM system.

43. The method according to claim 39, wherein of house area is a land-based system and the other area is a digital mobile satellite system.

44. The method according to claim 43, wherein the ground-based system is a GSM system and the digital mobile satellite system is an ACeS system.

45. The method according to claim 28, wherein the system is a multiple-mode system, a first mode of the system corresponds to the home area on which the mobile station is based and a plurality of other modes each corresponding to another respective area.

46. The method according to claim 45, wherein at least one of the areas is essentially co-terminal with the house area.

47. The method according to claim 28, wherein the telecommunication system includes a system parameter, in which it corresponds to the ability of the system to handle a location update, the system parameter when set prevents the mobile station from carry out a location update when it leaves, from the home area to another area.