Telecommunication system and commutation network for it

Description:

The invention relates to a telecommunications system. The invention in particular, but not exclusively, relates to a telecommunication system for mobile phones.

In standard terrestrial telecommunication systems, calls are transferred from one fixed point to another, and in this way it is relatively easy to use the communication path for such types of calls. The source of the call introduces into the system the information (usually the phone number of the destination) in which the route information is arranged sequentially. Therefore, for the system it is relatively simple to hold the switching required for the route, by successfully decoding the parts of the input information. Any necessary switching point is considered only part of the information.

If the telecommunication system also includes mobile phones, the situation is much more complicated, because the call to a mobile phone is not a water to a fixed point, and therefore the system must determine the position of the destination. Currently, a water to a mobile phone is made by sending a signal to the Home Location Register unit (HLR) that determines the position of the mobile phone and thus allows the call to be distributed.

The telecommunication system is known to contain a communications device of the basic switchboards (connected to mobile phones) and the telephone station network [1].

The proxy solution is the telecommunication system that ensures the operation of the mobile phones and which contains a subscriber location (HLR) module, the module being intended to keep the data about the connections regarding one or more corresponding telecommunication devices and means of securing the connections, for using data on the connections in the data storage module (HLR) to form the telecommunication link with one or more telecommunication devices [2].

Inevitably, the HLR module has limited capacity and, therefore, some arrangements are needed to allow the telecommunications system access to multiple HLR modules. At first glance, all that is needed for this - to ensure the highest possible number of HLR modules and to assign different mobile phone numbers to different HRL modules.

However, this fact does not correspond to the purpose of ensuring customer flexibility in a mobile phone system. Each mobile phone has two types of numbers associated with it, the first being the number that is used by third parties to call the mobile phone (MSISDN) and the second being the identification number (IMSI) that is used by the telecommunication system to address the mobile phone. . By using existing techniques, information on both of these numbers must be stored in the same HLR mode.

It is expected that more MSISDN numbers may be required for users, for example, if the user wishes to be able to communicate both types, and voice and data, in existing systems, each second MSISDN with identification number (IMSI) must be shared. be an MSISDN number of the same HLR module as the previous MSISDN number. This would be impossible to achieve if, for example, the HRL module containing the original information is completed. In this way, the only network through which additional services can be provided would require the user to change their phone number, which would be undesirable. This comes with a particular problem if users are more likely to have the choice of numbers, rather than being insured with them.

The problem solved by the invention is to extend the technical possibilities of the telecommunication system and to eliminate the mentioned deficiencies.

for this purpose, the switching network for a telecommunications system, which includes two or more mobile telecommunications devices, two or more data storage modules (HLRs) about the connections relating to one or more corresponding mobile telecommunications devices, and determining the location of one or more appropriate mobile telecommunication devices and means for securing connections for using data on the connections in the data storage module (HLR) to form the telecommunication link with one or more mobile telecommunication devices, additionally the network is equipped with a data recording module about the interconnection between the data storage modules, and with one or more identification codes; with means of entering the identification code; with switching modules for querying the registration module for determining the data storage modules (HLR), associated with this identification code, and with means of modifying the data about interconnection, kept in the registration module, in which the means of providing the connection are configured so that the recording module se

MD 1845 G2 2002.01.31 switches to form the connection to one or more appropriate telecommunications mobile devices, using the connection data when the data storage module related to this identification code has been determined.

In the switching network, also, the connection data is the data indicating the position of one or more mobile telecommunications devices.

In addition, the switching network includes the recording module that stores additional information regarding mobile telecommunications devices, the switching network including means for querying the recording module in response to the extra information extraction signal associated with a specified mobile telecommunications device, connection means that connect the link channel according to the additional information.

The switching network further includes means for modifying said additional information.

for the same purpose, the telecommunication system is characterized in that it incorporates a switching network according to the invention.

In the telecommunication system according to the invention at least a few telecommunication devices are mobile phones.

In addition, in the telecommunications system at least a few telecommunications devices are associated with the services offered to the subscriber.

To solve these problems, the present invention proposes that the switchgear network that connects users with other users, with HLR modules and system services, should associate a registration module, which confines the information about the correspondence of each phone book with one of the modules. HLR. The relationship between the phone numbers and the HLR modules should then be easily selectable in the registration module, so that the registration module acts as a converter between numbers and the information identifying the HLR module.

The result of installing such a recording module and a new set of elements is that the fixed relay between the numbers and the HLR modules is destroyed, and as a result any nuisance can be assigned to any HLR module, which implies the release of the lightning bolt.

The registration module can also store additional information regarding mobile phones that would allow the switchgear relay to direct calls from mobile phones to different services, depending on the mobile phone itself in the water, in addition to the number picked.

Example L Different mobile phones offered by different organizations (Service Providers) will be able to use the same generic access code, for example 150, to call the parent organization regarding payment questions. It is convenient if such services are accessed through numbers independent of the organization providing the service. In this way, a water from a mobile phone to such a service triggers a signal to the recording module that generates the information that identifies the service unit associated with that number for the particular mobile phone. This identifying information can then be sent back to the communication refinery to allow the call to be sent to the correct service unit.

Example 2. The users will have the possibility of accessing the voice mail in the respective personal mailboxes by collecting the generic access code, for example 123, the register providing the information needed to send this water.

In any case, the system can be adapted in such a way that if the user uses a public telephone instead of his mobile phone, he can manually communicate to the switchgear relay sufficient information for the switchgear to obtain from the registration module the additional information regarding the user's mobile phone.

For the registration module there is an additional possibility to use the additional information regarding mobile phones more in terms of calls to phones, than those from phones. For example, the additional information may be sufficient to reorient the connection path originally intended to establish a connection with a given mobile phone, if this mobile phone is not accessible, for example, because it is busy or defective, or because the subscriber does not want to to answer. Such a system can operate in situations when, for example, a subscriber tries to establish a connection with a mobile phone that is currently inaccessible; in this case the switchgear can redirect the call to the appropriate service, as is the voice mail service.

By using the present invention the telecommunication system can be endowed with many useful features. If there is a defect in the module of the mobile phone, which identifies the mobile phone (this module is called SIM), this module can be replaced very quickly. using

MD 1845 G2 2002.01.31 The proposed invention, even if the subscriber will receive a new IMSI identification number that refers to another HLR module than the previous IMSI identification number, the subscriber does not need to change his phone number (MSISDN number) because the re-assignment to a new HLR module can be performed by the registration mode.

In this way, any telephone number (MSISDN number) can be used to identify any subscriber.

The following is a more detailed description of the present invention, with examples and references to drawings in which:

FIG. 1 represents the schematic block diagram of the telecommunication system realized in the present invention;

FIG. 2 presents in more detail the part of the telecommunication system in fig. 1.

In conjunction with fig. 1, the switching station 1 interconnects ordinary phones and mobile phones. If a water from a regular telephone arrives at a mobile phone, this water is transmitted through the public telephone switching station (PSTN) 2 to the switching station, and from this switching station 1 to the mobile telephone (BSS) 3. In order to do this, switchgear 1 must obtain the route information, and to determine this route information the switchgear must determine the position of the mobile phone 3, which is done through the HLR module to which the mobile phone is associated. 3. In the case of several HRL 4, 5 modules for switchgear 1, it is necessary to determine which HRL 4, 5 module should be accessed, based on the telephone number (MSISDN logbook) of the mobile phone picked up by the water subscriber.

In accordance with the present invention, the switching station 1 has access to a recording module 6, which identifies the called number and addresses it to a certain HLR module 4, 5 to which the mobile phone is associated. 3. The registration mode 6 allows the free determination of the relay between any mobile phone nozzle and the HLR 4, 5 modules, so the number does not depend on a specific HLR 4, 5 module, to which it is associated. Recording mode 6 excludes the need for a particular mobile phone logger to be associated with a fixed HLR 4, 5 module.

When given the identification of some HLR module 4, 5 with which the mobile phone 3 is associated, in this HLR module certain signals arrive, and from it the information is received on a regular basis. This information is used to establish the route of the call to the mobile phone 3, which can then be transmitted normally.

Similarly, if the call is generated by the mobile phone 3, the switching station 1 must again determine the path of this water. If the call is addressed to a stationary telephone connected to the switch station 1 via PSTN 2, then the route is normally based on the telephone number.

In case the call is made from a mobile phone 3 to one of the inulfime of voice processing systems (VPS) 7, 8 or to the services 9 associated with the switchgear via the use of a short code (for example, 123), the connection between the mobile phone 3 and the corresponding service must be determined by the recording mode 6 before the switchgear can determine the appropriate voice processing system 7, 8 or the service 9 to be accessed.

It is necessary to mention that the structure of the existing systems is similar to the one presented in fig. 1, except that in the existing systems there is no recording mode 6 and only one HLR module is present. Thus, existing systems do not need to determine which HLR module should be accessed, because there is only one HLR module. For the application of the present invention, the switching station 1 accesses the recording mode 6 for the processing of all calls, which leads to the transmission of the interrogation signals to the HLR mode in the existing structure in order to determine which of the muffim of HLR modules 4, 5 must be accessed. . In this way, the implementation of the present invention is related to the installation of the registration module 6 and the respective programming of the switch relay 1.

In FIG. 2 is represented in more detail the switching station 1. In its composition there are many mobile switching centers (MSCs) 10, 11 and 12, and a water intended for a specific mobile phone generates the signaling between these centers MSC 10, 11 and 12 and one of multiple signal transfer points (STP) 13, 14, the signals from which are transmitted to the recording mode 6 to determine the HLR mode 4, 5 which corresponds to the mobile phone 3. The registration mode 6 determines the necessary information from the telephone number (MSISDN number) of the mobile phone 3. Afterwards, for the registration mode 6 it becomes possible to transmit the necessary signals directly in the corresponding HLR modules 4, 5, but, as represented in

MD 1845 G2 2002.01.31 fig. 2, it is preferable for the information to return to the corresponding STP point 13, 14, which in turn transmits the signals to the HLR module 4, 5 correctly.

A similar signaling flow is observed when the mobile phone user 3 tries to access one of the voice processing systems (VPS) 7, 8. The call is received by one of the MSC centers 10, 11 and 12 which transmit the collected numbers and mobile phone identification information at one of the STP points 13, 14, 15. As a result, the information is transmitted to the registration module 6, which uses this information to calculate the correct address of the voice processing service (VPS) 7, 8. This information is transmitted back from the registration module through a STP point 13, 14, 15 to the original MSC center 10, 11, 12. After that, the obtained address is used by the switching network 1 to direct the call. As an allowance, the call is transmitted from the corresponding MSC center 10, 11, 12 through the switching station (including TCS switching centers 15, 16) to the corresponding VPS service 7, 8.

The signal that is transmitted by the mobile phone in the switching station and after which the mobile phone is recognized, must not only be fixed, but can be altered, for example, by inserting the data transmission card into the telephone. In this way, a subscriber can identify himself in the commutafia refea by inserting in his mobile phone a personal card that identifies him, with the subsequent referral to the corresponding VPS service based on the identification data of the subscriber.

The possibility of orienting the calls to the VPS service by using the information in the registration module 6 allows the location of the individual voice processing services (such as the mailboxes) in the places that have the maximum geographical position near the areas of predominant use of the mobile phone. This can significantly reduce the cost of transporting the call.

Moreover, if the predominant position of the mobile phone changes, it is more convenient to use VPS services 7, 8 different, and then these changes can be recorded in the registration module 6. The subscriber in the water can still access his VPS service its (now located elsewhere) without changing the number used to call the service. Similarly, if the mobile phone user transfers from one service system to another, the registration module 6 can accommodate these changes without the user having to pick different numbers. in this way, for example, in the localities where there are several service systems and the mobile phone user switches from one service system to another, for this user it is not necessary to collect different numbers in order to gain access to a new system. service. On the contrary, the same numbers can be used, and the new call orientation is guided by the signals transmitted between the MSC center 10, 11, 12 and the registration module 6.

Switchgear 1 can also use information about mobile phones in such a way that if the given phone is busy, does not answer or is defective, the switchgear can redirect the calls, originally addressed to this phone, to the corresponding VPS service, as is the voice messaging system.