Position registering method for mobile terminal and mobile communication device

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to maintenance and management of location information of a mobile terminal held in a communication network.

【0002】

[Conventional technology]

In the conventional mobile communication device, the position information of each mobile terminal is managed in the communication network, and when the mobile terminal moves between the areas of the wireless base station, the position managed in the network by the position registration from the mobile terminal. The information is being updated. That is, each radio base station has unique position information that does not overlap with each other, and constantly transmits the position information to mobile terminals existing in the area of its own station. When the mobile terminal receives the position information sent from the radio base station, the mobile terminal receives the latest current position information maintained in the terminal and the base station that the mobile terminal receives from the radio base station. Compare with the unique location information, and if they do not match, recognize that you have moved to another area, start the location registration procedure, and register the location of the mobile terminal in the location information database managed in the network. At the same time, the latest location information in the terminal is updated.

【0003】

FIG. 9 is a diagram illustrating a conventional location registration method, which includes a service control switch 1 constituting a communication network, a location information database 2, regional exchanges 3a and 3b, and wireless base stations 4a and 4b, and wirelessly connects to this communication network. Indicates the mobile terminals 5a, 5b, and 5c to be connected. Here, the location information database is described as being connected to the service control exchange, but a configuration in which the location information database is connected to each regional exchange is also possible.

【0004】

Here, the position information of the radio base stations 4a and 4b is set to X and Y, and among the mobile terminals 5a, 5b and 5c that were in the area of the radio base station 4a, the mobile terminal 5c is the other radio base station 4b. The case of moving to an area will be described as an example. In this case, the mobile terminals 5a and 5b store X as the previous position information, and the newly received position information is also X. Therefore, since the location information matches, the location registration procedure is not started. On the other hand, the mobile terminal 5c stores the position information X received from the radio base station 4a at the time before the movement, but the position information newly received after the movement is Y. In this case, since the location information does not match, the location registration procedure is started, the location information stored by the user is updated to Y, and the location registration signal is sent to the radio base station 4b. This location registration signal is sent to the service control exchange 1 via the regional exchange 3a, and the service control exchange 1 updates the contents of the location information database 2.

【0005】

[Problems to be Solved by the Invention]

The conventional location registration of the mobile terminal is started by the judgment of the mobile terminal side. Therefore, even if the communication network side loses the information in the location information database in the network due to a regional disaster or failure, the location information transmitted from the wireless base station and the location information stored in the terminal will remain. As long as they continue to match, no new location registration procedure will be initiated. That is, even though the terminal is in a normal state, a situation occurs in which an incoming call cannot be received to the terminal only due to the lack of location information in the network. Then, unless the mobile terminal moves in the area, correct position information cannot be obtained.

【0006】

The present invention solves such a problem, and when the location information maintained by the communication network is lost, the location management method of the mobile terminal capable of quickly recovering the location information and restarting the incoming service. And to provide mobile communication devices.

【0007】

[Means for solving problems]

The first aspect of the present invention is a method for registering the position of a mobile terminal, and the position of the mobile terminal that registers the position of the mobile terminal based on the position information of the radio base station that has received the position registration signal transmitted from the mobile terminal. The registration method is characterized in that a location registration start request is transmitted to a mobile terminal in the wireless base station area via a wireless base station, and each mobile terminal starts location registration according to the received location registration start request. And.

【0008】

In the present invention, since the mobile terminal is made to perform location registration in response to a request from the communication network, even if the location information maintained by the communication network is lost, the location information is quickly restored and the incoming service is restarted. be able to.

【0009】

If all the energized mobile terminals existing in the area start location registration at the same time, the radio base station and the exchanges above it may be disturbed by the communication network such as congestion. Therefore, it is desirable to specify a mobile terminal in response to the location registration start request, and each mobile terminal starts the location registration when the received location registration start request is for itself. In that case, it is desirable to specify a certain number of terminals collectively instead of specifying individual mobile terminals. In particular, it is desirable to specify for each terminal group of an arbitrary number. To do so, the mobile terminal is specified by an integer value and a remainder value, and each mobile terminal divides its terminal number by an integer from the received integer value and when the remainder matches the received remainder value, It is desirable to judge that it is a request to start location registration for yourself.

【0010】

The second aspect of the present invention is a mobile communication device in which a location registration method is performed, and one or more mobile terminals, a plurality of wireless base stations capable of wirelessly communicating with each of the one or more mobile terminals, and each movement. Each mobile terminal includes a location registration means for registering its own position in the location management means via one of the radio base stations, and a location management means for managing which area in the radio base station the terminal is located in. In a mobile communication device, the location management means includes a registration requesting means for requesting location registration from at least a part of a mobile terminal via at least some radio base stations, and the location registration means responds to a request from the registration requesting means. It is characterized by including a registration starting means for starting location registration.

【0011】

The registration requesting means is a means for designating one or more of a plurality of radio base stations and a signal for requesting location registration from the designated radio base station to all mobile terminals existing in the area of the radio base station. It can include means for transmitting a broadcast. In particular, the registration requesting means includes means for transmitting a designated integer and a designated remainder as parameters for designating a mobile terminal that requires location registration from at least a part of a plurality of radio base stations, and the registration starting means receives the designated designation. It is desirable to include a means for dividing the terminal number unique to the local terminal by an integer and determining that the local terminal is requested to register the location when the surplus and the received designated surplus match.

【0012】

The registration requesting means may include a means for manually designating a radio base station for transmitting a location registration request signal and a mobile terminal requesting location registration.

【0013】

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a diagram showing a first embodiment of the present invention, showing a block configuration of a communication network and a mobile terminal, and a position registration operation of the mobile terminal with respect to the communication network. In the communication network, the service control exchange 1 that selects the optimum communication route to the mobile terminal and connects the line between the mobile terminals or between the mobile terminal and another network, and the location information of each mobile terminal are stored. The location information database 2 that manages which area in the radio base station the mobile terminal exists in, and the regional exchanges 3a and 3b that route to the service control exchange 1 and the radio base station in which the mobile terminal resides. It is equipped with radio base stations 4a and 4b capable of wirelessly communicating with a terminal, and an operation system 6 for controlling its operation is connected to the service control exchange 1. The mobile terminals 5a, 5b, and 5c can move freely, and notify the service control exchange 1 of their position via the radio base station in the area in which they live and the regional exchange that accommodates the radio base station. , The location can be registered in the location information database 2.

【0014】

Location registration by the mobile terminals 5a, 5b, and 5c is usually performed when the radio base station area is moved as in the conventional case. That is, the radio base stations 4a and 4b constantly transmit unique position information within the area of their own station, and the mobile terminals 5a, 5b and 5c have the received position information as the current position information maintained by the terminal. If they are different, start the location registration procedure specified in advance as standard. By this location registration procedure, the latest location information in the terminal is updated, and the location information database 2 contains the location information of the wireless base station that received the location registration signal transmitted from the mobile terminal. The position of is registered.

【0015】

The location registration by the mobile terminals 5a, 5b, and 5c is also performed by the request from the operation system 6. That is, the operation system 6 broadcasts a location registration procedure start request signal to the mobile terminals in each wireless base station area via the service control exchange 1, the regional exchange 3a, and the wireless base stations 4a, 4b, and the mobile terminal 5a, In 5b and 5c, respectively, the same location registration procedure as when moving to the area is started according to the received location registration start request.

【0016】

FIG. 2 is a diagram showing a second embodiment of the present invention, showing a block configuration of a communication network and a mobile terminal, and a position registration operation of the mobile terminal with respect to the communication network. In this embodiment, the terminal designation information is included in the location registration procedure start request signal transmitted from the operation system 6 via the service control switch 1, the regional switch 3a, and the radio base stations 4a, 4b. to differ greatly. The terminal designation information specifies a mobile terminal for which the start of location registration is requested, and each mobile terminal starts location registration when the received location registration start request is for itself.

【0017】

Here, a case where mobile terminals 5b and 5c are specified by the terminal designation information will be described as an example. In this case, since the mobile terminal 5a does not correspond to the terminal specified by the terminal designation information included in the received location registration procedure start request signal, the location registration procedure is not started. Since each of the mobile terminals 5b and 5c corresponds to the terminal designated by the terminal designation information, the location registration procedure is started.

【0018】

[Example]

FIG. 3 is a block configuration diagram showing a specific embodiment of the present invention. In the communication network, a plurality of service control exchanges 1a and 1b, location information databases 2a and 2b provided in the plurality of service control exchanges 1a and 1b, respectively, and a regional exchange 3a housed in the service control exchange 1a, It is equipped with 3b and radio base stations 4a and 4b housed in the regional exchange 3a. The operation system 6 is connected to the service control exchanges 1a and 1b, and the operation terminal 7 operated by the maintenance person is connected to the operation system 6. In addition, it is assumed that the mobile terminals 5a, 5b, and 5c exist in the area of the wireless base station 4a, and when the location registration start request from the network is made, the mobile terminal is specified and the wireless base station that transmits the request is also specified. It shall be. The operation system 6 holds information on the accommodation status of the upper and lower exchanges and the arrangement status of the position information of the mobile terminal. The location information of mobile terminals that can be used in this communication network is distributed in the location information databases 2a and 2b of the service control exchanges 1a and 1b according to the PSN number band of the mobile terminals.

【0019】

FIG. 4 shows the control flow when requesting location registration from the mobile terminal from the operation system 6, and FIGS. 5 to 7 show the location registration procedure start request control signal and service control sent from the operation system 6 to the service control exchange. The signal formats and signal examples of the location registration procedure start request signal sent from the exchange to the regional exchange and the location registration procedure start request signal transmitted from the regional exchange to the area via the radio base station are shown. , FIG. 8 shows the flow of operation when the mobile terminal receives the location registration procedure start request signal.

【0020】

In order to request the location registration from the mobile terminal, the maintenance person specifies the service control exchange designation information for specifying the service control switch whose location information is to be restored and the wireless base station from the operation terminal 7 to the operation system 6. Enter the radio base station designation information and the terminal designation information for designating the mobile terminal. Two parameters, "designated integer I" and "designated remainder N", are used as the terminal designation information. In the following, it is assumed that the service control exchange 1a and the radio base station 4a are specified.

【0021】

At this time, the operation system 5 acquires the PSN start number and the PSN final number of the PSN number band of the position information held by the designated service control exchange 1a based on the service control exchange designation information. Further, the regional exchange 3a accommodating the designated radio base station 4a is selected based on the radio base station designation information. Then, the location registration procedure start request control signal including the regional exchange designation information, the radio base station designation information, the terminal designation information, the PSN start number, and the PSN final number is transmitted to the service control switch 1a designated by the service control switch designation information. To do.

【0022】

The service control exchange 1a is a location registration procedure including the radio base station designation information, the terminal designation information, the PSN start number, and the PSN final number in the designated regional exchange 3a based on the regional exchange designation information received from the operation system 6. Send a start request signal.

【0023】

The radio base station 4a broadcasts a location registration procedure start request signal including terminal designation information, a PSN start number, and a PSN final number to mobile terminals 5a, 5b, and 5c existing in its own area.

【0024】

In this example, two parameters, a designated integer I and a designated remainder N, are used as terminal designation information. This is suitable for classifying mobile terminals into an arbitrary number of terminals without duplication by utilizing the remainder system of arbitrary integers of PSN numbers that mobile terminals have uniquely without overlapping with each other. ..

【0025】

When the mobile terminals 5a, 5b, and 5c receive the location registration procedure start request signal, they extract the specified integer I, the specified remainder N, the PSN start number, and the PSN final number from the signal, and the PSN start number received by the own PSN number. To determine whether or not it is within the range of the PSN final number. If it is within the range, the subsequent processing is executed, but if it is not within the range, the processing is not executed. A mobile terminal whose own PSN number is within the range converts its own PSN number into integer type data, executes integer division of its own PSN number value using the specified integer I in the received terminal designation information, and obtains a remainder. This remainder is compared with the value of the designated remainder N in the received terminal designation information, and if both match, the conventional location registration procedure is started.

【0026】

Here, as shown in FIG. 7, it is assumed that the designated integer I = 10, the designated remainder N = 3, the PSN start number is "050-100-0000", and the PSN final number is "050-499-9999". Further, it is assumed that the PSN numbers of the mobile terminals 5a, 5b, and 5c are "050-123-4567", "050-123-4565", and "050-123-4563", respectively. In this case, the PSN numbers of the mobile terminals 5a, 5b, and 5c are within the range from the PSN start number to the PSN final number, and each performs the remainder calculation by the designated integer I. At this time, on the mobile terminal 5a, "0501234567" is divided by an integer by "10" to obtain a remainder of "7", which does not match the specified remainder N, so the location registration procedure is not started. Similarly, the remainder of the mobile terminal 5b is "5", which does not match the designated remainder N, so the location registration procedure is not started. Since the remainder of the mobile terminal 5c is "3" and matches the specified remainder N, the location registration procedure is started.

【0027】

When the location registration of the specified mobile terminal is completed, the operation system 6 asks the maintenance person whether to specify the next specified remainder N. When a new designated remainder N is specified, the above operation is repeated using the designated remainder N. At this time, for example, if "7" is specified as the designated remainder N, the mobile terminal 5a can start the location registration procedure. When the update of the designated remainder N is completed, the maintenance person is asked whether to change the designation of the radio base station, and the same operation is repeated.

【0028】

By requesting the start of location registration while changing the value of the specified remainder N with a time lag, the lost location information can be quickly restored while preventing the communication network from being disturbed due to the concentration of the location registration procedure start time. be able to.

【0029】

[Effect of the invention]

As described above, according to the present invention, by registering the position information of the mobile terminal at the request from the communication network side, even if the position information maintained by the communication network is lost, the position information can be quickly obtained. It can be restored. Therefore, it is possible to recover the location information of the mobile terminal lost in the event of a regional disaster such as the Great Hanshin Earthquake or the failure of the device that composes the location information database, and it is possible to recover the location information of the mobile terminal at the opportunity requested by the maintainer. It is possible to restart and promptly confirm the safety in the event of a disaster.

[Simple explanation of drawings]

[Figure 1]

The block block diagram which shows the 1st Embodiment of this invention.

[Figure 2]

The block block diagram which shows the 2nd Embodiment of this invention.

[Fig. 3]

The block block diagram which shows the specific embodiment of this invention.

[Fig. 4]

The figure shows the flow of control which requests the location registration from the mobile terminal from the operation system.

[Fig. 5]

The figure which shows the signal format of the location registration procedure start request control signal sent from the operation system to a service control exchange, and the signal example.

[Fig. 6]

The figure which shows the signal format of the location registration procedure start request signal sent from the service control exchange to the area exchange, and the signal example.

[Fig. 7]

The figure which shows the signal format and the signal example of the location registration procedure start request signal transmitted from the area exchange via a radio base station into the area.

[Fig. 8]

The figure which shows the flow of operation when a mobile terminal receives a position registration procedure start request signal.

[Fig. 9]

The figure explaining the conventional position registration method.

[Explanation of symbols]

1, 1a, 1b service control switch 2, 2a, 2b location database 3a, 3b regional exchange 4a, 4b wireless base station 5a, 5b, 5c mobile terminal 6 Operation system 7 Operation terminal