JPH02264593A - Logic number communication system capable of designation of incoming call condition - Google Patents

Abstract

PURPOSE:To prevent the overhead which is caused at an additional service and to designate the incoming call conditions by holding the information on the store positions necessary for the mobile communication after scattering those information to the exchange nodes. CONSTITUTION:The exchange nodes 1-3 and a controller 4 are prepared to store the terminal equipments 9-14 for service subscribers. Each of nodes 1-3 contains the internal routing data bases 5-7, and the controller 4 includes a data base 8. The nodes 1-3 hold the information on the store positions necessary for the mobile communication after separating them. When the communication is requested, the corresponding node is connected to the equipments 9-14 stored in response to the logic number of the address of the relevant communication request in a connection grant state when a general subscriber of a communication network has a communication request with the logic number of a service subscriber defined as an address. Then an inquiry is given to the controller 4 for the calling conditions in a connection non-grant state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a logical number communication system, and more particularly to a logical number communication system that allows call arrival conditions to be specified using logical numbers in a communication network.

[Conventional technology]

In many conventional communication systems, the communication partner is specified by specifying the location of a specific terminal device.

For example, the telephone number used to specify a communication partner on a regular telephone does not represent the particular person with whom the communication is being made, but rather the location of the particular telephone. Therefore,
For example, the telephone number (03) XXX-YYYY represents a telephone connected to the link represented by YYYY of the exchange represented by the city code XXX in Tokyo.

In this kind of communication, that is, communication performed by specifying the communication partner by the position (place) of a specific terminal device, if the person with whom you want to communicate is not near the terminal device, you will not be able to make contact.

On the other hand, mobile communication services can basically eliminate the above-mentioned restrictions, and it is possible to communicate with a communication partner even when the user is not at a specific location.

In order to enable so-called mobile communications, in which people can communicate with each other no matter where they are, it is necessary to specify the communication partner using a logical number assigned to each service subscriber. When using a logical number assigned to a service subscriber to specify a communication partner, the logical number itself does not contain any information about the current location of the communication partner, that is, the connection point within the network, so In order to find a node, a correspondence table between the logical number and the current accommodation point is basically required for each service subscriber in the system.

Furthermore, in order to provide more advanced services in a mobile communication system, the following are also required. In other words, in addition to location information to enable mobile communications as described above, incoming call condition data for each individual service subscriber is stored in the network in order to provide various advanced additional services. For example, in future advanced communication services, additional services are being considered that will allow call incoming conditions to be set individually for each service subscriber.

Specifically, a person becomes a person at a certain time of the day (F is
With the above-mentioned services, it is possible to register in advance and specify such things as only accepting communications from certain people, or paying the communication charges for communications from specific people. Note that notifying the current location information for mobile communication is also considered to be one of the call reception conditions because it specifies the terminal device to be used for the call reception.

As mentioned above, in order to provide various additional services in future advanced communication services, a database for each service subscriber will be maintained in the network, and communication will be made to correspond to the requested services. In advance of this, it is required to inquire of the database about the incoming call conditions of the communication partner and have the necessary processing performed.

[Problem to be solved by the invention]

However, when attempting to establish a database to be used for determining the incoming call conditions of the communication partner, in reality,
A practical problem in constructing such a system is where to specifically hold the call condition data of each service subscriber.

If a database is centrally set up and each switching node queries the database via a signal line for each connection request, such a method would result in the delay for the query and the processing in the database. The burden of this becomes a problem.

On the other hand, it is also conceivable that each switching node holds the information separately. In this case, there is an advantage that there is no delay in inquiries, but in order to store sophisticated call arrival conditions, memory capacity and control for processing the conditions become burdensome.

In particular, as mentioned above, the requested service may be such that, for example, a subscriber may only be able to receive communications from a specific subscriber who has registered in advance during a specific time of the day. There are various situations such as paying the communication fee for communication from a specific subscriber, and furthermore, when considering a case where a large number of subscribers subscribe, it may cause overhead or the exchange node This puts a heavy burden on the staff, and it is not easy to constantly provide sufficiently high-quality services.

An object of the present invention is to prevent the occurrence of overhead even when implementing the above-mentioned additional services in a communication network using a communication method using logical numbers, and to reduce the overhead by reducing the memory capacity and processing of switching nodes. It is an object of the present invention to provide a logical number communication system in which incoming call conditions can be specified, which can be performed appropriately while suppressing an increase in burden.

[Means to solve the problem]

The present invention is a logical number communication method that allows specification of call incoming conditions in a communication network that has a plurality of switching nodes and control devices and that accommodates terminal devices of service subscribers, and which assigns a logical number to a service subscriber. At the same time, a memory corresponding to the logical number is installed in each switching node and control device in the communication network, and the service subscriber notifies himself/herself of the incoming call conditions, and the notified call incoming conditions are applied after the notification. If it specifies the terminal device to use,
The control device records identification information corresponding to the specified terminal in correspondence with the logical number of the subscriber in the memory of each exchange node to enable connection, and the notified call condition indicates that the terminal to be used If the it, II tlU device includes a condition other than specifying a device, it records the incoming call condition in the memory in its own device in association with the logical number of the subscriber, and also records the call condition in each switching node. By recording in the memory of the subscriber that an inquiry is necessary to the control device in correspondence with the logical number of the subscriber concerned, the switching node enters a connection disallowed state, and the exchange node When a communication request is made with the subscriber's logical number as the destination, if the connection is in the connection permission state, a connection is made to the terminal device specified in correspondence with the logical number of the destination of the communication request, and the connection is disabled. When in the permission state, the feature is that the control device 4111 is inquired about the incoming call conditions.

[Operation] According to the present invention, each switching node stores the accommodation location information necessary for mobile communication in a distributed manner, and the control device stores the information for a service subscriber who specifies predetermined call conditions. Maintain and process its incoming call conditions.

(Example〕 Next, the present invention will be explained using the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.

As shown in FIG. 1, the communication network according to the present embodiment includes a plurality of switching nodes 1, 2, 3, and 3 in the illustrated case.
and a control device 4, and is a communication network accommodating terminal devices 9 to 14 of service subscribers. Each switching node 1 to 3 is equipped with a routing database 5 to 7 within the switching node, and the control device A database 8 within the control device is installed at 4.

Further, in the figure, solid lines connecting each of the switching nodes 1 to 3 indicate a communication path P, and broken lines connecting each of the switching nodes 1 to 3 and the control device 4 indicate a signal path S, respectively.

The terminal devices 9 to 14 are used by service subscribers, and each service subscriber is assigned a logical number different from the terminal number. In a communication system using such logical numbers, a memory corresponding to the logical number is installed in each switching node 1 to 3 and control device 4 in the communication network shown in FIG.

Databases 5 to 7 and database 8 described above include this memory.

The following contents are stored in these memories.

That is, the service subscriber notifies the control device 4 of the incoming call conditions to himself or herself, and if the notified incoming call conditions specify the terminal device to be used after notification, the control device 4 4 records the designated terminal equipment number in the memory of each switching node 1 to 3 in association with the logical number of the subscriber, thereby setting the switching node in a connection permitted state.

In this way, a correspondence table of accommodation positions for mobile communication is created in the databases 5 to 7 of each of the exchange nodes 1 to 3. Details of the correspondence table will be described later.

Furthermore, if the notified call conditions include conditions other than specifying the terminal device to be used, the control device 4 causes the memory in its own device to correspond to the logical number of the subscriber. The incoming call condition is recorded in the memory of each switching node 1 to 3, and the fact that an inquiry is required to the control device 4 is recorded in the memory of each switching node 1 to 3 in correspondence with the logical number of the subscriber. Set to permission state.

As described above, the corresponding table of accommodating locations for mobile communication and call conditions for individual service subscribers other than that are separated.

For mobile communications, each of the switching nodes 1 to 3 holds only the storage location information necessary for mobile communication in a distributed manner, and when a communication request is received, the corresponding switching node When a general subscriber subscribed to a communication network makes a communication request with the logical number of the service subscriber as the destination, when the connection is in the connection permission state, the communication request is stored in correspondence with the logical number of the destination of the communication request. When the terminal device is in the connection-disallowed state, it inquires of the control device 4 about the incoming call conditions.

In this way, in the logical number communication system in which incoming call conditions can be specified as shown in FIG. A logical number different from the terminal number is given to the subscriber, and a memory corresponding to the logical number is installed in each switching node 1 to 3 in the communication network and in the control device 4, and the service subscriber If the notified call condition specifies the terminal device to be used after the notification, the control device 4 notifies each switching node 1 to 3 of the call condition.
records the specified terminal device number in the memory of the subscriber in association with the logical number of the subscriber to enable connection;
If the notified incoming call conditions include conditions other than specifying the terminal device to be used, the control device 4 stores the specified number in the memory of its own device in correspondence with the logical number of the subscriber. In addition to recording the call arrival conditions of each switching node 1,
~3, the connection is not permitted by recording in the memory of 3 the necessity of making an inquiry to the control device 4 in correspondence with the logical number of the subscriber, and the exchange node When the person makes a communication request with the logical number of the service subscriber as the destination, when the connection is allowed, the terminal device connects to the terminal device stored in correspondence with the logical number of the destination of the communication request. , when the connection is not permitted, the control device 4 is inquired about the incoming call conditions.

A detailed explanation will be given below with reference to FIG. 2 as well.

Incidentally, FIG. 2 shows an example of the contents of the databases 5 to 7.8.

In the network shown in FIG. 1, the control device 4 instructs in advance that the service subscriber a with the logical number A will now use the terminal device 9, and the service subscriber with the logical number B will use the terminal device 13. shall be notified. In addition, although the service subscriber C with the logical number C uses the terminal device II, the control device 4 is also notified in advance that for the time being it will only accept calls from the service subscriber. shall be.

Here, such notification of the terminal device used can be easily carried out by using, for example, an ID card and a terminal device with a card league. Therefore, in this case, each service subscriber a to c has an ID card on which their logical number A to C is recorded, and all they have to do is insert the ID card into the card league of the terminal device they want to use when they move. It is possible to provide a device in which the logical number in the ID card and the device number of the terminal device used are notified to the control device 4.

On the other hand, notification of advanced call conditions such as for service subscriber C generally requires manual key operation from the terminal device or manual operation by an operator.
Appropriate means among these can be taken.

FIG. 2 shows an example of the contents of the databases 5 to 7.8 in each exchange node 1 to 3 and control device 4 in the above case.

FIG. 2(a) shows the contents of the correspondence table described above, that is, the databases 5 to 7 in each exchange node 1 to 3,
Corresponding to logical numbers A and B, terminal devices 9 and 13 are written as registered terminal devices, respectively. On the other hand, the logical number C is marked with 8 * marks.

In this example, it is assumed that the wooden seal specifies the incoming call condition at a specific altitude, that is, indicates that there is a need to make an inquiry.

In addition, although the contents of each database 5-7 are made equal here, they do not necessarily have to be equal. For example, for logical number A, directly connected switching node 1
The terminal device 9 is written in the database 5 of , but the number of the switching node 1 that accommodates the terminal device 9 is written in the databases 6.7 of the other switching nodes 2 and 3 in correspondence with the logical number A. It's okay if it's dark.

Further, FIG. 2(b) shows the contents of the database 8 of the control device 4. Corresponding to logical numbers A and B, the terminals used are simply 9 and 13, but logical number C
As part of the call receiving conditions, there is further written a condition that the terminal device 11 in use only accepts calls from logical number B, that is, calls from service subscribers with logical number B. .

Under the above conditions, the operation of this embodiment will be explained separately for each case.

Now, assume that service subscriber a uses the terminal device 9 to request a call to service subscriber A.

In this case, since the logical number assigned to the service subscriber is B, the switching node 1 determines that the logical number of the destination is B.
is searched for in the database 5 (search table shown in FIG. 2(a)), it is learned that the service subscriber is currently using the terminal device 13, and the line is connected to the terminal device 13 via the switching node 3.

In this way, switching node 1 allows subscriber A, who is subscribed to the telecommunications network, to access service subscriber B with logical number B.
When a communication request is made with the destination as the destination, if the connection is permitted as described above, connection is made to the terminal device 13 stored in correspondence with the logical number B of the destination of the communication request. In this case, there is almost no connection delay.

Next, a case will be described in which a service subscriber uses the terminal device 13 to request a call to service subscriber C. In this case, the situation is as follows.

That is, in this case, the exchange node 3 accommodating the terminal device 13 learns from the database 7 that the service content for the logical number C assigned to the service subscriber C is conditional, and informs the control device 4 of the destination address. The logical number C of the sender and the logical number B of the sender are sent via the signal path S to inquire. When an inquiry is received in this way, the control device 4 checks the logical number C in the database 8 (search table in FIG. 2(b)) and confirms that the logical number B of the sender meets the reception conditions. After that, the exchange node 3 is informed of the terminal device 11 to be connected, and the connection is permitted. The exchange node 3 receives permission from the control device 4 and connects to the terminal device 11.

In this way, when a subscriber subscribed to the communication network makes a communication request with the logical number C of the service subscriber C as the destination, when the switching node 3 is in the connection-disallowed state as described above. In this case, the control device 4 is first inquired about the incoming call conditions. In this case,
Although the delay is longer than in the previous example due to the inquiry, it is better in terms of reducing the memory capacity of the exchange node and the processing load.

Next, suppose that service subscriber A makes a call request to 11 Bisca-1 I'C. In this case, an inquiry is made to the control device 4 in the same way as in the case described above, but since the condition is that service subscriber C does not accept calls from service subscriber A, in this case, the control device 4 The connection rejection is notified to switching node 1, and switching node 1 does not make the connection.

As described above, the correspondence table of accommodation locations for mobile communication and the call arrival conditions for individual service subscribers are separated, and
For service subscribers who do not specify the latter individual call arrival condition, by maintaining a correspondence table of accommodation locations in each exchange node 1 to 3, it is possible to make an inquiry overhand (connection). Said service subscription = lf c
In the case of a service subscriber who specifies a call arrival condition other than the accommodation location, the database in the control device 4 can be made to make an inquiry, which prevents overhand and reduces the burden on exchange nodes 1 to 3. It is possible to achieve both of this and prevention of increase.

In other words, by distributing and holding only the accommodation location information necessary for mobile communications in each switching node, connections can be made without the overhead of inquiries, and it is also possible to connect service subscribers who have specified advanced call conditions. The incoming call conditions can be centrally held and processed by the control device 4, the memory capacity and processing load of the exchange nodes 1 to 3 can be reduced, and high-quality additional services can be constantly provided.

〔Effect of the invention〕

As explained above, according to the present invention, information on accommodation locations necessary for mobile communication is distributed and held in switching nodes, so that connections can be made without the overhead of inquiries.
Additionally, for service subscribers who have specified special call conditions, the control device can hold and process these conditions, reducing the memory capacity and processing burden of the switching node. This has the effect of providing a logical number communication system in which call arrival conditions can be specified, which can also reduce IlI.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing an example of the contents of a database. 1-3... Exchange node 4... Control device 5-7... Routing database 8 in the exchange node... Database 9-14 in the control device...
terminal device

Claims (1)

[Claims] (1) A logical number communication method that allows specification of incoming call conditions in a communication network that has a plurality of switching nodes and control devices and accommodates service subscriber terminal devices, which assigns a logical number to the service subscriber and , a memory corresponding to the logical number is installed in each switching node and control device in the communication network, and the service subscriber notifies himself of the incoming call conditions, and the notified call conditions are used after the notification. If it specifies a terminal device to
The control device records identification information corresponding to the specified terminal in correspondence with the logical number of the subscriber in the memory of each switching node to enable connection, and the notified call condition indicates that the terminal to be used If the control device includes conditions other than specifying a device, the control device records the incoming call condition in the memory of its own device in association with the logical number of the subscriber, and also records the condition in the memory of each switching node. The exchange node records the necessity of making an inquiry to the control device in correspondence with the logical number of the subscriber in question, thereby setting the switching node to a connection-disallowed state. When a communication request is made with a logical number as the destination, if it is in the connection permission state, a connection is made to the terminal device specified in correspondence with the logical number of the destination of the communication request, and the connection is not allowed. A logical number communication method in which a call condition can be specified, which is characterized by inquiring a control device about a call condition at certain times.