Method of completing a telephone call in a telephone system

 

(57) Abstract:

The invention relates to communications technology, and is to perform a complete telephone call from a caller to a callee when the callee does not answer the call, and the caller is constantly connected to the public switched telephone network public areas, and the called subscriber is a mobile device. Located in the center of the register locations of the place of registry keeps records of where all the mobile devices registered in the mobile communication network. If the caller detects that the called number is busy, he dials a code, and the reference number is stored in the queue register locations designated home. While the caller is informed that the called party is free to accept the call, and when lifting tube between the two callers connection. The call is connected when the called subscriber answers, and register locations designated home removes the reference number from the queue. 3 S. and 2 C.p. f-crystals, 6 ill.

The invention relates to a method of completing a telephone call from a caller to a called party, when is it at least one cellular mobile communication network. One of the subscribers connected through the mobile communication network, and the other subscriber is connected via a mobile communication network or through the public switched telephone network public areas. Called subscriber is registered in the register of the location of the place of registration and is temporarily registered in the register locations of visitors, which is known to the register locations of the place of registration and is included in the mobile network.

Modern technology telephony is rapidly developing. Many mobile communication systems, and among them the European GSM system, have already passed the first major stage of development, and system designers now focus on further usovershenstvovannyh systems, and among other things, on the development of systems and the introduction of additional services. Associated with a particular plot of land the public switched telephone network public long includes additional services such as automatic callback when a called subscriber is busy on another call," or "automatic callback when a called party does not respond". This known method is based on the database in which the identity of incoming callers is set when the connection tapeinosis this method, mobile communication system is subscribers in the mobile system.

Because the mobile subscriber is often geographically moves in the network or communication system, there are difficulties of determining the location of the subscriber, when it becomes possible connection to call, especially when it has been a long time between the initiation of the "services automatic callback and performance of this service. Such services are also available in some mobile communication systems. For example, the automatic callback is known from Japanese patent N 3190494. According to this known method the identification number and the calling and the called subscriber are stored in the memory cell while waiting when the called number becomes available to receive a call. When the subscriber is available, using data taken from the memory cell, a connection for the call.

The disadvantage of this known method is that the memory cell are tied exclusively to the territory (honeycomb), which was movable device when you first try to call the called party. When the movable device is moved outside of this area, it is no longer possible to determine the location of podi the

In Japanese patent N 3235563 also disclosed a method of automatic callback, under which subscribers data stored in the called mobile device.

Although this method solves the problem of finding a mobile device, it requires additional equipment in each mobile device, whose owner wants to use this service.

The purpose of the invention is to provide automatic callback in cellular mobile communication network even in cases where the caller and/or callee has moved/have moved a great distance in the network from the time of initiation of service callback to the point at which the service is performed.

The aforementioned problems are solved in accordance with the invention by storing characters identify the location of the two subscribers in the existing Central database in the mobile communication network. The Central database called the registry location of the place of registration HLR has a traditional meaning keep records of locations in the network to all mobile devices that are registered in the system and the location in which the network pripiski HLR with all local databases in the system, the so-called registers locations of visitors VLR in which is stored the code area of the graph, which reveals the geographic location of mobile devices in each moment of time. According to the invention, the ability of register locations designated home HLR to know which registers locations of visitors registered with all the mobile devices which is used to determine the locations mentioned above subscribers before the callback. This gives you the opportunity to make connections for calls even when users are moved from the first to the second register locations of visitors for the time elapsed between the triggering callback execution of the callback. While the respective mobile subscribers with no additional equipment is required in contrast to known methods, in which additional equipment was necessary.

In Fig. 1 presents a block diagram that illustrates the situation of the chart between the calling subscriber is associated with a specific parcel of land to a public switched telephone network public areas and a called subscriber in a cellular mobile communication network GSM type, and Fig. 2 presents technological Carter. 1; Fig. 3 is a block diagram illustrating the situation of the chart between the calling subscriber in the mobile communication network GSM type and the called subscriber is associated with a specific parcel of land to a public switched telephone network public use; Fig. 4 process map illustrating a method corresponding to the invention, which uses the configuration illustrated in Fig. 3; Fig. 5 is a block diagram illustrating the situation of the graph between the caller and the called subscriber in the mobile communication network GSM type, and Fig. 6 process map illustrating a method corresponding to the invention, which uses a configuration corresponding to Fig. 5.

Preferred embodiments of the invention.

Land mobile network public type GSM, PLMN contains firewall mobile switching center telephone service that connects multiple local mobile switching centers services, each of which is connected, in turn, with multiple base station controllers. The GSM network is well described in the so-called GSM recommendations, and network architecture, in particular, described in the recommendations GSM 03.02. Each base station controller is Yu, called cell. PLMN network, in addition, contains a Central database, the so-called register locations designated home that connects to the firewall or the Central mobile switching center telephone services, as well as with all local mobile telephone switching centers in a PLMN network. These mobile devices that ebonyrose for mobile communication network, registered in the register of the location of the place of registration. Each local mobile telephone switching center contains a local database, called the register locations of visitors, in which at any given time all registered mobile device, the presence of which is determined by one of the cells, which operates the local mobile switching center telephone service.

In Fig. 1 shown in one of the local mobile switching services center MSC, base station controllers BSC, registers locations of visitors VLR and base stations BS, which are required for carrying out the invention. For clarity in Fig. 1 not shown many of these devices. Movable device B1, owned land mobile network public PLMN and nah is registered in the register of localities visitors VLR and at the same time constantly in the above-mentioned register locations designated home HLR. Register locations designated home HLR is always informed of the register locations of visitors VLR, which in this point in time, the registered mobile device B1. In Fig. 1, also shows the components of the terrestrial public switched telephone network public areas required for the implementation of the invention. Telephone network public provides local telephone station E, which connects to the firewall mobile switching center in the PLMN network. This is a single connection between networks means that all transmit signals between the public switched telephone network public PSTN and PLMN network must pass through the firewall mobile switching center telephone service CENTRE. The caller A1, so-called A-subscriber is permanently connected to the local telephone station LE, and the above-mentioned movable device B1, which is the called party, the so-called B-subscriber, establishes communication with the base station B on the radio link. Line radio shown in the figure as bold dashed lines. All persistent connections between the previously mentioned sites GMSC, HLR, MSC, BSC, BS, LE and A1 are shown in figure continuous bold lines. Conelike, although for the sake of clarity signaling is depicted on one side of these compounds. Signaling is illustrated by the continuous thin lines. The arrowheads on the lines of transmission signals indicate the direction of signal transmission. The transmission of signals between the local telephone exchange LE and register locations designated home HLR is transparent through the firewall MSC, as shown in Fig. 1 thin solid line, which contains arrows in two directions and which is common for this signaling. Time compression of the signal transmission is designed to make it easier to follow the overview in Fig. 1. The transmission signal illustrated in Fig. 1 and is required when carrying out the invention, not intended to represent the full procedure of signal transmission, which is carried out when making connections for the call. In Fig. 1 shows only the transmission of signals in two networks, the PSTN and PLMN, while sending signals to the two participating subscribers A1 and B1, and from them is revealed in the text. In Fig. 1 is also not illustrated in the signaling that takes place in the known methods.

The above-described mobile communication system PLMN operates in accordance with GSM recommendation is The exemplary embodiment of the invention, described in detail below, includes the service "automatic callback when busy. As mentioned earlier, in the case of automatic callback is important to be able to determine the location of the called mobile subscriber B1, even when the mobile device has moved geographically at a great distance and entered the area of the cell that is served by another register location of visitors. The method corresponding to the invention, ensures that this important function and involves the following steps.

A-subscriber A1 causes the B-subscriber B1 and tries to establish a connection for the call.

A-subscriber A1 is informed that the B-subscriber B1 is busy with another caller through tone busy signal, that is, a rapid sequence of short tones. These two stages are well known in the art and form part of the accepted modes of transmission signals, and therefore will not be described in detail here.

Then the method corresponding to the invention includes the following steps.

A-subscriber A1 dials the number 5 on your telephone keypad, those requesting the service "automatic callback when thanatou" is sent from the local telephone station LE register locations designated home HLR through transparent firewall mobile switching centre GMSC.

Arrival message 1 register locations designated home leads to the creation of a reference number CRefi, which is placed last in the queue 10 in register locations designated home HLR. Turn composed of reference numbers allocated to different subscribers, who tried to establish a call to the B-subscriber. If before any attempts to reach the B-subscriber B1 is no longer made, the queue is created and the first in the queue fits the reference number CRefi message 1 "end call".

Register locations designated home HLR, who knows what the register locations of visitors to this time, registered B-subscriber B1, forwards the message to the 1 "end call" register locations of visitors VLR.

The register locations of visitors VLR registers message 1 "end call" and sends the register locations designated home HLR confirmation message 2 "end call confirmed".

Register locations designated home HLR forwards the confirmation 2 "end call confirmed" "local telephone station LE with reference CRefi transparent through the Central mobile switching center.

A-subscriber A1 informirovanie with the local telephone station LE, putting his phone.

B-subscriber B1 is free to receive calls when the ends of the ongoing call to another subscriber.

Local mobile switching center telephone services B-subscriber B1 informs the register locations of visitors VLR about the new status of the subscriber B1, the transmission of signals in Fig. 1 is not shown.

Message 3 "B-free" is sent from the register locations of visitors VLR register locations designated home HLR.

Register locations designated home HLR acknowledges the message 3 "B-free" by sending a confirmation message 4 "B-free - confirmed by the register locations of visitors VLR.

Reference number CRefi, which now is expected at the beginning of the queue 10 is sent to the local telephone station from LE register locations designated home HLR together with the message 3 "B-free" transparent through the firewall mobile switching centre GMSC.

A-subscriber A1 is informed by a rapid sequence of short tones that the B-subscriber B1 is free to receive calls, together with the A-subscriber confirms the message by lifting its handset, then nestihalo between A subscriber A1 and the local telephone station LE is a well known and therefore not shown in Fig. 1.

Initial address message LAM1, containing the phone number of the B-subscriber B1 is sent together with the reference number CRefi from a local telephone station LE firewall mobile switching center GMSC.

The following three procedural stages belong to the generally accepted procedures for the transmission of signals in a GSM mobile phone and therefore not illustrated in Fig. 1. The purpose of these three procedural stages is to be found wandering the number of the mobile station MSRN1, which is temporarily assigned to a B-subscriber B1, when the connection is established. At a later station that wandering room leads to the initial address message LAM1, sent to the local mobile switching centre MSC, used the B-subscriber in this moment of time.

From firewalls movable switching services center GMC register locations designated home HLR sends the request regarding the vagus numbers allocated to the B-subscriber B1.

Register locations designated home HLR, which contains information revealing the register location of visitors, which at that time registered B-subscriber B1, sends the reference number and/or the query distance is, associated with the vagus room B-subscriber B1, inter-mobile switching centre GMSC through the register locations designated home HLR.

In Fig. 1 shows the following procedural steps.

Connect A subscriber A1 with B-subscriber B1 by sending an initial address message LAM1 and wandering the rooms of the mobile station MSRN1 from firewall movable switching centre GMSC local mobile switching centre MSC. According to the invention the initial address message LAM1 and wandering the room MSRN1 accompanied by the reference number CRefi, then the reference number is sent to the register locations of visitors VLR.

B-subscriber B1 is informed about calling A-subscriber a common signal, after which the B-subscriber answers the call by lifting its handset or some appropriate action and communication with him is set.

Local mobile switching centre MSC of the B-subscriber B1 informs the register locations of visitors VLR about the new status of the B-subscriber B1, that is, that the B-subscriber has answered. This transmission of signals in Fig. 1 is not shown.

The register locations of visitors VLR sends a message 5 "B answered" R of place of registration HLR removes the reference number CRefi from the queue 10.

As an additional precaution when carrying out the above method in accordance with the invention to give a reference number CRefi the opportunity to accompany the request relating to the vagus non moving services MSPN1 B-subscriber. In this case, the reference number is passed from firewall rolling local switching center mobile switching center via two different routes. This reference number CRefi is transmitted directly from the firewall movable switching centre GMSC local mobile switching center directly in the manner described above, as well as through the register locations designated home HLR. This redundant transmission provides transportation reference number CRefi, if the reference number on one or the other reason, is lost when the connection of the call, for example, as a result of simultaneous call from another subscriber.

It should also be pointed out that, when the movable device is switched from one register locations of visitors to another, the transmission of signals is carried out in a manner that is conventional in combination with the so-called wandering in the mobile system or a communication network. Procedures for OPO callback corresponding to the invention, this "wandering" has no effect, and the reference number CRefi always stored in register locations designated home HLR, which is informed about changes in the register locations of visitors.

In Fig. 2 presents a diagram describing the above-mentioned procedure. The scheme and the following is a simplified description of implemented procedures intended for consideration together with Fig. 1 and related text. Acronyms and abbreviations in the text of the scheme refer to Fig. 1 and explained in the above-described example. The method according to the specified procedure described with reference to the diagram in Fig. 2 after the time as the A-subscriber A1 caused the B-subscriber B1 and requested the service "automatic callback when busy, after receiving dial tone busy status. After this method is carried out in accordance with the following description and in accordance with Fig. 2.

The message "end call" is sent from the local telephone station LE register locations designated home HLR in accordance with the block 100.

Reference number CRefi created and placed last in the queue register locations designated home HLR in accordance with block 101.

Register places the Ted unit 102.

VLR sends a confirmation message to complete the call confirmed" register locations designated HLR in accordance with block 103.

Register locations designated home HLR sends a confirmation message to complete the message confirmed" and the reference number CRefi local telephone station LE in accordance with block 104.

B-subscriber B1 is available to receive calls at the end of continuing the call in accordance with block 105. Local mobile switching centre MSC of the B-subscriber B1 then informs the register locations of visitors about the new status of the B-subscriber.

The message "B free" is sent from the register locations of visitors VLR register locations the place of registration in accordance with block 106. Then register locations designated home HLR confirms this message to register locations of visitors VLR.

Reference number CRefi and the message "B free" is sent from the HLR to the local telephone station LE in accordance with block 107.

A-subscriber A1 is informed that the B-subscriber B1 is free to receive his call and the A-subscriber A1 lifts his telephone receiver in accordance with block 108.

The initial address coordinatro services MSC in accordance with block 109.

Reference number CRefi is sent from the local rolling the switching center MSC to register locations of visitors VLR in accordance with block 110.

Is the connection for the call using the initial address message LAM1 and B-subscriber B1 is responsible in accordance with block 111.

The register locations of visitors VLR sends the reference number CRefi and the message "B replied" register locations designated home HLR in accordance with block 112.

Register locations designated home HLR removes CRefi from the queue in accordance with block 113.

The following describes another example embodiment of the invention, according to which use the same land mobile network public GSM-type PLMN, which in General terms described above. The example implementation described in detail below, refers to "automatic callback when the called subscriber has failed to respond". In this case, the calling subscriber is a mobile device that belongs to the land mobile network public PLMN, and the recipient of the call

the device is constantly connected to the network of public use.

Similarly to Fig. 1 of Fig. 3 the R locations of visitors VLR and the base station BS, necessary for carrying out the invention. Movable device A2, which belongs to a network PLMN and which is temporarily located in the cell region managed by the register locations of visitors VLR, as described above with reference to Fig. 1, temporarily registered in the register of localities visitors VLR, and constantly in the previously mentioned register locations designated home HLR. As mentioned earlier, the register locations designated home always informed about the register locations of visitors registered mobile device A2 at any given time. Fig. 3 also illustrates those portions of the PSTN, which are necessary for carrying out the invention, namely the local telephone exchange LE. In this example, mobile device A2 is the caller, so-called A-subscriber, and it establishes communication with the base station BS through the line radio. The called subscriber B2, the so-called B-subscriber, constantly connected to the local telephone station LE.

The above detailed description with reference to Fig. 1 is directly applicable to Fig. 3. The transmission signal illustrated in Fig. 3 and is necessary for carrying out the invention is not intended to charlotterusse only the transmission of signals in two PSTN and PLMN, while sending signals to the two participating subscribers A2 and B2 are given in the text only. In Fig. 3 also not shown the transfer of signals that occur in the known methods.

When performing services automatic callback, it is important to determine the location of the mobile device, and this case, the calling A-subscriber A2, when the caller has moved geographically at a great distance and was stuck in a cell area managed by the register locations of visitors, different from the one which was registered by A subscriber at the beginning of the call. The method corresponding to the invention described below, is able to perform this important function and involves the following procedural steps.

A-subscriber A2 attempts to connect the call to the B-subscriber B2.

A-subscriber A2 is informed that the B-subscriber B2 is not responding to the call by the call control tone that is not followed by a response. These two stages are well known in the art and part of the procedure of transmitting signals belonged to conventional methods and therefore will not be described in detail. Furthermore, the method corresponding to the invention includes the following steps.

A-Gabon is Ifri 2 on your telephone keypad.

This request is sent to the register locations of visitors VLR by signaling an accepted way through the base station BS, the base station controller BSC and the local mobile switching centre MSC. This transmission of signals in Fig. 3 is not shown.

Message 21 "end call" is sent from the register locations of visitors VLR register locations designated home HLR.

Register locations designated home HLR forwards the message to the 21 "end call" local telephone station LE transparently through the center GMSC.

Local telephone station LE registers message 21 "end call" and sends the register locations designated home HLR the confirmation signal 22 "end call confirmed" together with the reference number MRefi transparently through the center GMSC.

Reference number MRefi is stored in the memory cell 11 in register locations designated home HLR, and this memory cell belongs to the A-subscriber A2 and contains a reference number for the connection of A subscriber to other subscribers.

Register locations designated home HLR forwards the confirmation 22 "end call confirmed" case of localities preezie network PLMN.

B-subscriber B2 is activated, for example, when raising the B-subscriber handset or in some other way, showing that he is free to accept the call.

B-subscriber B2 inform the local telephone station LE about his new status by the conventional procedure of transmitting signals. This transmission signal shown in Fig. 3.

Message 23 "B free" is sent from the local telephone station LE register locations designated home HLR transparently through the center GMSC.

Register locations designated home HLR forwards the message to the 23 "B free" together with the reference number MRefi local MSC through the register locations of visitors VLR.

A-subscriber A2 is informed that the B-subscriber B2 is free to receive calls, for example, by a rapid succession of short causing tone. A-subscriber confirms this information, for example, by lifting its handset, then the local MSC is informed about the new status of A subscriber, i.e. that the A-subscriber is confirmed, can connect to call. The transmission of signals carried between A subscriber A2 and the local MSC, is a well known and therefore not shown in Fig. 3.

B-subscriber B2 is informed about the call from A subscriber A2 through the conventional tones, and the B-subscriber answers the call by lifting its handset. The call is made.

B-subscriber B2 inform the local telephone station LE about his new status, that is, that the B-subscriber has answered, through the conventional procedures for the transfer of signals, and this procedure of transmitting signals in Fig. 3 is not shown.

Local telephone station LE sends a message 24 "B replied" together with the reference number MRefi through the register locations designated home HLR, transparent through the center GMSC.

Register locations designated home HLR removes the reference number MRefi from his memory cell 11.

In Fig. 3 presents a diagram illustrating the above-described method. The scheme and the subsequent description of the method intended for consideration together with Fig. 3 and related text. Abbreviations included in the text for clarification on the scheme, explained in the example above with reference to Fig. 3. Further, the method described since after the A-subscriber A2 caused the B-subscriber B2 and requested the service "automatic callback, is that the method is carried out in accordance with the following description and in accordance with Fig. 4.

The message "end call" is sent from the register locations of visitors VLR register locations designated home HLR in accordance with the block 200.

Register locations designated home HLR forwards the message "end call" local telephone station LE in accordance with block 201.

Local telephone station LE sends a confirmation message to complete the call confirmed" and the reference number MRefi register locations designated home HLR in accordance with block 202.

Reference number MRefi is stored in the memory cell 11 in register locations designated home HLR in accordance with block 203.

Register locations designated home HLR sends on the confirmation message 22 "end call confirmed" the register locations of visitors VLR, then the A-subscriber is informed in accordance with block 204.

B-subscriber B2 is activated and becomes available for connection of the call. Then B-subscriber B2 inform the local telephone station LE about her new status in accordance with block 205.

The message "B free" is sent from the local telephone station LE register locations designated home HLR, in compliance is linoma MSC together with the reference number MRefi in accordance with block 207.

A-subscriber A2 is informed that the B-subscriber B2 is free to receive calls, and together with this A-subscriber confirms this information by lifting its handset or by means of some appropriate telephone procedures associated with mobile devices. Then the local MSC is informed about the new status of A subscriber that the A-subscriber has confirmed that the call can be connected in accordance with block 208.

Initial address message LAM2 is sent from the local MSC local telephone station LE together with the reference number in accordance with block 209.

B-subscriber B2 is informed about the call from A subscriber A2, after which the B-subscriber answers the call by lifting its handset, and the challenge thereby is established in accordance with block 210. B-subscriber B2 when this informs the local telephone station LE about her new status.

Local telephone station sends a message to "B replied" register locations designated home HLR together with the reference number MRefi in accordance with block 211.

Register locations designated home HLR clears the reference number MRefi of the above-mentioned memory cell in accordance with block 212.

Described viscay on call" has been described with reference to the case, when the calling subscriber is a mobile device and the called subscriber is constantly connected with related to some specific area in the public switched telephone network public areas. However, it will be clear that the service can be performed in accordance with the invention in all cases, when one of the two callers or they is or are movable device or mobile devices. This also applies to the previously described exemplary embodiment of the invention relating to "automatic callback when a called subscriber is busy on another call".

Below will be described another example embodiment of the invention. This example implementation of the invention uses the same network GSM PLMN-type, which is described above in General terms. Described below is an embodiment of the invention associated with "automatic callback when a called subscriber is busy on another call". In this case, both the caller and callee are movable devices belonging to the network PLMN.

As mentioned earlier drawings, Fig. 5 illustrates only the device network PLMN, which are necessary for carrying out the invention. Network PLMN is in the execution of the invention. In the variant shown in Fig. 5, the register locations designated home HLR is connected with two mobile switching centers services, referred to here as first and second local mobile switching services center MSCA and MSCB. Other switching centers connected to the register locations designated home for the sake of clarity not shown in Fig. 5. Each of the two mobile switching centers connected with the corresponding control unit of the base station, called respectively the first and second control devices base stations BSCA and BSCB. Each of the control devices of base stations connected to the corresponding base station, called the first and second base stations BSA and BSB. Each center MSCA and MSCB contains the corresponding register locations of visitors, here called the first and second registers locations of visitors VLRA and VLRB, respectively. The first movable device A3, owned by the network PLMN and temporarily located in the cell managed by the first register locations of visitors VLRA, temporarily registered in the register of localities visitors VLRA and constantly in register locations designated home HLR just as described with ustwo B3, which is in the area of another cell and is controlled by the second register locations of visitors VLRB. In the illustrated embodiment, a first movable device A3 is the caller, so-called A-subscriber and the second movable device B3 is the called party, the so-called B-subscriber. As described previously, the register locations designated home always informed about the register locations of visitors, VLRA or VLRB registered mobile device A3 and B3 at any time. Communication between mobile devices and network PLMN works the same way as described before. Technical details shown on discussed earlier figures are also applicable to Fig. 5. The transmission signal illustrated in Fig. 5, necessary for the invention, not intended to describe a complete procedure for signal transmission, which is carried out when the connection for the call. Fig. 5 illustrates the transmission of signals, which is implemented in the network PLMN, while sending signals to the two participating subscribers A3 and B3, and from them is revealed only in the form of text. In Fig. 5 also not shown transmission signals having months is very useful to determine the location of the desired mobile subscribers in this case, the calling A-subscriber A3 and the called B-subscriber B3. This also applies to those cases where one or both parties have moved geographically at a great distance and are trapped in the cell area, which is managed by the register of the location of visitors, different from the one in which subscribers were registered when initiating the call. The following method corresponding to the invention, ensures that this important function and involves the following procedural steps.

A-subscriber A3 causes the B-subscriber B3 with the intention to connect the call.

A-subscriber A3 is informed that the B-subscriber B3 is busy call from another subscriber through tone condition of employment, that is, a rapid sequence of short tones. These two stages are well known in the prior art, and the transmission of these signals are characterized by a hundredth of a conventional and therefore not described in detail. Furthermore, the method corresponding to the invention includes the following steps.

A-subscriber A3 dials the number 5 on your telephone keypad, requesting that the service "automatic callback when a called subscriber is busy on another call".

A-subscriber A3 informs the first case mestnichestvo base station management VSCA and the first local centre MSCA. This transmission signals of the conventional type and therefore not shown in Fig. 5.

Message 31 "end call" is sent from the first register mestonahozhdenii visitors VLRA register locations designated home HLR.

When the message 31 arrives at the register locations designated home HLR, there is created a reference number CRefi, which is placed last in the queue 12 in register locations designated home. The queue contains a reference number that identifies the various subscribers who are trying to cause a B-subscriber. If you have not done any earlier attempts to reach the B-subscriber, the queue 12 is created, and the first in it is placed a reference number CRefi messages 31 "end call".

Register locations designated home HLR, which is aware of how the register locations of visitors registered B-subscriber B3 in this particular moment, forwards the message to the 31 "end call" second register locations of visitors VLRB.

The second register locations of visitors VLRB registers the message "end call" and sends a confirmation message 32 "end call is confirmed by the register locations designated home HLR.

Registration is eromu the register locations of visitors VLRA.

A-subscriber A3 informed about the confirmation of 32, after which the A-subscriber disconnects its connection to the network PLMN.

B-subscriber B3 is available to receive calls at the termination of an ongoing call to another subscriber.

Local mobile switching center services MSCB B-subscriber B3 informs the second register locations of visitors VLRB about the new status of the subscriber B3. This signaling is well known and therefore, in Fig. 5 is not shown.

Message 33 "B free" is sent from the second register locations of visitors VLRB register locations designated home HLR.

Register locations designated home HLR acknowledges the message 33 "B free" by sending a confirmation message 34 "B free confirmed" the second register locations of visitors VLRB.

Reference number CRefi, which, as expected, now headed by turn 12, is sent from register locations designated the home HLR of the first register locations of visitors VLRA with the message 33 "B free".

A-subscriber A3 is informed that the B-subscriber B3 is free to receive calls, for example, by a rapid succession of short signals a call to the new status of A subscriber, the fact that the A-subscriber has confirmed that the call will be connected. The transmission of signals between A subscriber and the first register locations of visitors VLRA is in a known manner and therefore the figure is not shown.

The following three procedural stages belong to the generally accepted procedure of transmitting signals in a GSM mobile phone and so the figure is not shown. The purpose of these three procedural stages is to be found wandering the number of the mobile station MSPN3, which may temporarily be assigned to the B-subscriber B3 during connection establishment. At a later stage this wandering room leads to the initial address message LAM3 with the phone number of the B-subscriber B3 for local telephone station used at this point, the B-subscriber.

Query regarding wandering the rooms of the B-subscriber B3 is sent from the first local center MSCA register locations designated home HLR.

Register locations designated home HLR, which contain information on the register locations of visitors, in which the B-subscriber B3 is registered at this time, redirects the reference number and the request to the second register locations of visitors VLRB.

is it the number of the B-subscriber B3, through the register locations designated home HLR.

In Fig. 5 shows the following procedural steps.

Compound a is a subscriber A3 with B-subscriber B3 is set by sending the initial address message LAM3 and wandering the rooms of the mobile station MSRN3 from the first local center MSCA second centre MSCB. According to the present invention, the initial address message LAM3 and wandering the room MSRN3 accompanied by the reference number CRefi. The reference number is then sent to the second register locations of visitors VLRB.

B-subscriber B3 is informed about the call from A subscriber A3 conventional signal transmission, and therefore the B-subscriber answers the call by lifting its handset, or perform some other appropriate procedure mobile phone, and the call is made.

Local mobile switching center services B-subscriber B3 informs the second register locations of visitors VLRB the new status of the B-subscriber, i.e. that the B-subscriber has answered. This transfer is considered to be common and therefore in Fig. 5 is not shown.

The second register locations of visitors VLRB sends the register locations designated prepei HLR removes the reference number CRefi from the queue 12.

As an additional precaution in the process corresponding to the invention, it is possible to give a reference number CRefi the opportunity to accompany the request relating to the vagus non MSRN3 B-subscriber. This reference number is then transmitted from the first local rolling switching centre MSCA second local mobile switching center services MSCB via two different routes. This reference number CRefi is directly transmitted from the first local center MSCA second local centre MSCB, as described earlier, as well as through the register locations designated home HLR. This redundant transmission guarantees delivery reference number CRefi, even if the reference number is lost during a call call for one or another reason, for example as a result of simultaneous call from another subscriber.

In Fig. 6 presents a diagram illustrating the above-described method. The scheme and its subsequent simplified description designed for consideration, together with Fig. 5 and related text. All used abbreviations are explained in the description of the foregoing examples of the invention and refer to Fig. 5. The method is described with reference to the diagram in Fig.Yes the called subscriber is busy on another call", after receiving dial tone busy status. The method is further in accordance with the following description and in accordance with Fig. 6.

The message "end call" is sent from the first register locations of visitors VLRA register locations designated home HLR, in accordance with block 300.

Reference number CRefi created and placed last in the queue in case of location of place of registration in accordance with block 301.

Register locations designated home HLR sends the message "end call" second register locations of visitors VLRB in accordance with block 302.

The second register locations of visitors VLRB sends a confirmation message to complete the call confirmed" register locations designated home HLR in accordance with block 303.

Register locations designated home HLR sends the confirmation to end the call confirmed" the first register locations of visitors VLRA in accordance with block 304. A-subscriber A3 informed about the confirmation, after which the A-subscriber releases the connection by returning to the place of the handset or by some appropriate procedure for the of lauderee call with another party. Mobile switching center services MSCB B-subscriber B3 informs the second register locations of visitors VLRB the new status of the B-subscriber in accordance with block 305.

The message "B free" is sent from the second register locations of visitors VLRB register locations designated home HLR in accordance with block 306.

Reference number CRefi is sent from register locations designated the home HLR of the first register locations of visitors VLRA with the message "B free", A-subscriber A3 is informed that the B-subscriber B3 is available to receive calls (107).

A-subscriber lifts his telephone receiver or performs the appropriate procedure mobile phone in accordance with block 308. The first register locations of visitors VLRA is informed about the new status of A subscriber, the fact that the A-subscriber has answered.

Compound a is a subscriber A3 with B-subscriber B3 is set by sending the initial address message LAM3 and reference number from the first local rolling switching centre MSCA second mobile switching center services MSCB in accordance with block 309.

The reference number is sent from the MSCB second registrant answers the call by lifting its handset, or perform some other appropriate phone procedure and the call is connected in accordance with the block 311. Local mobile switching center services B-subscriber B3 informs the second register locations of visitors VLRB the new status of the B-subscriber, i.e. that the B-subscriber has answered.

The second register locations of visitors VLRB sends the message "B replied" register locations designated home HLR together with the reference number CRefi in accordance with block 312.

Register locations designated home HLR clears the reference number CRefi from the queue in accordance with the block 313.

In embodiments of the invention described above, the automatic callback was provided in three occurring under normal conditions, cases, chart, namely, in cases where

the calling A-subscriber is permanently connected with tied to the land telephone network, and the called B-subscriber is movable device;

the calling A-subscriber is a mobile device and the called B-subscriber is permanently connected with tied to the land telephone network;

the calling A-subscriber and the called B-subscriber are mobile devices that are in cells controlled by different registers locations etc is. For example, two mobile devices can be placed in cells that are controlled by the same register locations of visitors. It is easily seen that the invention is able to determine the location of the two subscribers even in this case. It is clear that mobile devices can be placed in different mobile communication networks and that the location of these devices can be defined in different registers locations the place of registration. This configuration requires to connect a call through the public switched telephone network public areas. This is achieved in accordance with the invention by the combination of the first and second embodiments of the invention. As will be clear, there are several other variants of the three implementations of the invention, and an expert in the field of technology will be clear that the invention is not limited to these implementations. Some mobile communication network may also contain more than one register locations designated home. However, this option does not restrict the scope of the invention and is a modification of the above-described case, when the mobile device belong to different mobile communication networks, but Atlas earlier, the invention can be applied to all mobile communication systems in which mobile devices are registered in the system centrally, such as digital American system ADC. It also means that used in this document the term "mobile device" may be given different interpretations depending on, operates whether the mobile communication network by the subscribers, which are transported by vehicles, Hiking subscribers, search call, subscriber stations and so on.

It is clear that the invention is not limited to the above described and illustrated illustrative variants of its execution and that the scope of the claims may be made of the changes.

1. Method of completing a telephone call in the communication system, containing public switched telephone network public and land mobile network public areas, and both networks are mutually connected firewall mobile switching center services, and in the above-mentioned mobile communication system, the caller And the subscriber is connected to the local telephone station to the public switched telephone network public areas, and the called subscriber the subscriber is the Tr services in terrestrial mobile network public and In-person registered in the register of the location of the place of registration and is temporarily registered in the register locations of visitors, well-known case of location of place of registration and owned by the local mobile switching center services, and called the method includes the steps of calling A-subscriber In the subscriber information And the subscriber that the subscriber is unavailable, characterized in that it comprises the following steps, in which the a-subscriber dials the code requesting the service to end the phone call, the message "end call" is sent from the local telephone exchange to register locations designated home the message "end call" triggers a location reference numbers down the line at the register locations designated home, and called the turn belongs to the b-subscriber and contains the reference number is made different subscriber attempts to connect to the b-subscriber, register locations designated home forwards the message "end call" register locations of visitors, the register locations of visitors registers the message "end call" and sends a confirmation message to complete the call confirmed" case locations months is redene" local telephone station together with the reference number, A-subscriber is informed about the confirmation, after which the caller disconnects the connection with the local telephone station, the subscriber becomes free to receive calls, the message "free" is sent from the register locations of visitors to register locations of the place of registration, the register locations of the place of registration confirms the message "free" by sending a confirmation message "In a free confirmed by the register locations of visitors, the reference room, located at the top of the queue is sent from register locations designated the home of a local telephone station with the message "free", and then the a-subscriber is informed about that is, the subscriber is free, the call connection is established using an initial address message when the subscriber is free, and the reference number is accompanied by an initial address message from the local telephone exchange to interconnection mobile switching center services and from there to the local mobile switching center services, after which the reference number is sent to the register locations of visitors, the subscriber answers the call, the register locations of visitors sends the message "replied the register locations IU queue.

2. Method of completing a telephone call in the communication system, containing public switched telephone network public and land mobile network public areas, and both networks are mutually connected firewall mobile switching center services, the caller And the subscriber in the mobile communication network is a mobile device that communicates via the local mobile switching center services in the land mobile network public areas, and in this mobile communication network of the called subscriber In the subscriber connected to the local telephone station to the public switched telephone network public as a subscriber registered in the register of the location of the place of registration and is temporarily registered in the register locations of visitors, well-known case of location of place of registration and owned by the local mobile switching center services, and the method comprises the steps of calling A-subscriber In the subscriber information And the subscriber that the subscriber is unavailable, characterized in that it comprises the following steps, in which the a-subscriber dials the code requesting the service to end the phone call, the message "end call" posyliste home forwards the message "end call" local telephone station, local telephone station registers the message "end call" and sends a confirmation message to complete the call confirmed" case of location of place of registration together with the reference number, the reference number is stored in the memory cell in the register locations of the place of registration, and this memory cell belongs to the a-subscriber and contains the reference number for connection attempts with different subscribers from a subscriber register locations designated home forwards the confirmation to end the call confirmed" the register locations of visitors, And the subscriber is informed about the confirmation, after which the caller disconnects the connection with land mobile network public In-subscriber becomes free to receive calls, the message "free" is sent from the local telephone exchange to register the location of the place of registration, the register locations designated home forwards the message "free" local mobile switching center services along with the reference number through the register locations of visitors, after which the a-subscriber is informed that the subscriber is free to receive calls, the call connection is established with the beginning of the room accompanied by the initial address message from the local rolling the switching center services to the local telephone station through the firewall mobile switching center services B-subscriber answers the call, the local telephone station sends the message "replied the register locations designated home together with reference numbers and register locations designated home removes the reference number from the queue.

3. Method of completing a telephone call in the communication system, containing land mobile network public areas, in which the calling subscriber a subscriber is a mobile device that communicates via the first local mobile switching center services in the land mobile network public areas, and in this mobile communication system of the called subscriber In a subscriber is a mobile device that communicates via the second local mobile switching center services, both of the subscriber registered in the register of the location of the place of registration and each is temporarily registered in the appropriate register locations of visitors known case of location of place of registration and are defined as first and second registers locations of visitors, respectively, and each of these registers belongs to one of the local mobile switching centers services, and Saudis fact, that includes the following steps, in which the a-subscriber dials the code requesting the service to end the phone call, the message "end call" is sent from the first register locations of visitors to register locations designated home, the message "end call" triggers a location reference number last in line at the register locations designated home, and called the turn belongs to the b-subscriber and contains the reference numbers for the various subscribers who tried to connect with b-subscriber, register locations designated home forwards the message "end call" second register locations of visitors the second register locations of visitors registers the message "end call" and sends a confirmation message to complete the call confirmed" case of location of place of registration, the register locations designated home sends a confirmation message to complete the call confirmed" the first register locations of visitors, And the subscriber is informed about the confirmation message, after which the caller disconnects the connection with land mobile network public areas, In-subscriber becomes free to receive calls, soobshenii, register locations the place of registration confirms the message "free" by sending a confirmation message "free-confirmed" the second register locations of visitors, the first reference number in the queue is sent from register locations designated home first register locations of visitors with the message "free", after which the a-subscriber is informed that the subscriber is free, the call connection is established using an initial address message when the subscriber is free, and the reference number is accompanied by the initial address message, when called, a message is sent from the first movable switching center services second pavignano switching center services, after which the reference number is sent to the second register locations of visitors, the subscriber answers the call, the second register locations migrant sends the register locations designated home message "answered" together with the reference number, and register locations designated home erases the reference number from the queue.

4. The method according to p. 1, wherein upon connection of the call reference number is also sent from the firewall rolling and to ensure characterized by redundancy more reliable transfer reference number.

5. The method according to p. 3, wherein upon connection of the call reference number is also sent from the first register locations of visitors through the register locations of the place of registration to ensure characterized by redundancy more reliable transfer reference number.

 

Same patents:

The invention relates to radiopribornuy communication, in particular to radio dispatch communication

FIELD: data organization and control in cellular communication networks.

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calckj
)= M(ΔLi) 2m - j, where M(lcalckj
) is calculated value of mantissa with compression operator "k" and mantissa length of (m - j) bits; m is capacity of mantissa given as base one in first next data block of SMS message; j is capacitor of one of k mantissas given and stored in sending-end memory; M(ΔLi) is fractional part of difference of two adjacent numbers transferred in desired order.

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2 cl, 2 dwg

FIELD: radiophone groups servicing distant subscribers.

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12 cl, 11 dwg

FIELD: radio communications.

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5 cl, 31 dwg, 4 tbl

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16 cl, 4 dwg

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6 cl, 14 dwg

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2 cl, 8 dwg, 2 tbl

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4 cl, 7 dwg

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9 cl, 4 dwg, 2 tbl

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