JPH09130855A - Communication time limiting system and communication controller by the system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently process the requests of various communication time from subscribers. SOLUTION: In the communication time limiting system of a mobile communication system, communication limiting time is classified to plural steps, a limiting time corresponding to the class is assigned to each subscriber and the number of calling limits corresponding to the class is controlled by each zone. A time control table record-controlling information on the class concerning the communication limiting time, information on an existing circle zone and information on communication time corresponding to the subscriber, and a call control part adding the limit to he subscriber's communication time based on information in the time control table are provided. A line control table recording and controlling information on a line using state and information on the number of position-registered mobile equipments corresponding to the class is provided for each zone so that the call control part controls the number of calling limits corresponding to the class by each zone based on information in the line control table.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication time limiting method and a communication control apparatus using the method, and more particularly, to a communication time limiting method for a mobile communication system that limits the communication time of a subscriber and communication control using the method. Regarding the device.
In recent years, the number of subscribers to mobile communication systems has increased remarkably, and communication services using the mobile communication systems are diversifying such that not only ordinary calls but also telemarketing and personal computer communications are performed.

A subscriber of such a system can use various communication services anytime and anywhere via a mobile device (cell phone, car phone, PHS, etc.). It tends to concentrate on one zone, and there are many cases where calls are busy and the phone does not answer. Therefore, it is desired to provide a mobile communication system in which even more subscribers can receive communication services evenly.

[0003]

2. Description of the Related Art Conventionally, there is known a method in which a call time of a subscriber is uniformly limited and a call is forcibly disconnected after a lapse of a certain time. However, according to this method, since all subscribers have the same call duration, there is an inconvenience that the call is disconnected in the middle even if the user wants to talk for a long time.

Further, conventionally, there is known one in which a subscriber declares a desired call time at the time of making a call, and forcibly disconnects the call after the lapse of the report time. However, according to this method, all the call lines in the zone may be blocked by a call for a substantially long time, and there is a disadvantage that other subscribers cannot make a call. Moreover, it is generally a difficult technique for the subscriber to determine an appropriate call time at the time of making a call, and it must be a long-term declaration in consideration of the momentum. As a result, one zone is flooded with calls for a long time, and other subscribers cannot make a call. Further, it is troublesome to input the call time (numerical key) each time a call is made.

[0005]

As described above, general subscribers have various call time demands. However, the conventional method of randomly mixing these calls within one zone is more effective. There is an inconvenience that many subscribers cannot be equally provided with the opportunity to call. It is an object of the present invention to provide a communication time limit system capable of efficiently processing various call time requests of subscribers and a communication control device according to the system.

[0006]

The above-mentioned problem is solved, for example, by referring to FIG.
It is solved by the configuration of. That is, the communication time restriction system of the present invention (1) is a communication time restriction system for a mobile communication system that restricts the communication time of a subscriber, and classifies the communication time restriction into a plurality of stages, and at the same time, for each subscriber. Is assigned a class-based time limit, and manages a class-specific call limit for each zone.

According to the present invention (1), since the communication time limit is classified into a plurality of stages, the communication time management / control and the like can be easily performed on the system side. In addition, class-specific time limits are assigned to each subscriber, and class-specific call limit numbers are managed for each zone, so it is possible to give subscribers of each class fair communication opportunities. . That is, for example, even if a zone is crowded with long-term calls, a subscriber who has a short-term call is given an opportunity to communicate. Conversely, even if a zone is busy with short-term calls, long-time subscribers are given the opportunity to communicate.

Preferably, in the present invention (2), the time limit of the corresponding class is assigned based on the class designated by the subscriber at the time of calling. Therefore, the subscriber can easily select, for example, a short time call or a long time call for the convenience at that time. In addition, it is easy to determine the length / short at the time of calling, and the length / short can be designated (key input) easily.

Further, preferably, in the present invention (3), the time limit of the corresponding class is assigned based on the class previously declared by the subscriber. By the way, in general, the communication time of a mobile device is often fixed by a subscriber. That is, for example, long telephone subscribers always make long telephone calls, and short telephone subscribers always make short telephone calls. In such a case, it is rather troublesome to specify the class each time a call is made. According to the present invention (3), since the class declared by the subscriber in advance is used, it is easy to use.

Further, in the present invention (4), preferably, the number of call restrictions corresponding to classes in each zone is based on the number of registered mobile stations in the zone and the number of predetermined communication channels usable in the zone. It is determined. Therefore, for example, when the number of registered mobile stations is small, it is predicted that the number of calls will be small. Therefore, the call restriction number is distributed so that more subscribers can receive a long-term call. If there are many location registrations, it is predicted that many calls will occur.
The call limit can be distributed so that more subscribers can be offered short-term calls.

Further, in the present invention (5), preferably, the number of call restrictions corresponding to classes for each zone is a predetermined number of communication channels usable in the zone and the number of communication channels among the number of communication channels. It is decided based on. Therefore,
For example, if the number of channels in communication is small, the line is not congested, so the call limit number is distributed so that more subscribers can receive long-term calls, while if the number of channels in communication is large, Since the line is busy, the call restriction number can be distributed so that more subscribers can receive a short-term call.

Preferably, in the present invention (6), the number of busy encounters of calls is measured for each class, and
When the number of busy encounters exceeds a predetermined number, the call limit number corresponding to the class of the zone is changed. For example, in a zone where short-duration calls are busy, the number of busy encounters for short-duration calls exceeds a predetermined number. In this case, the congestion of short-time calls can be alleviated by relatively increasing the number of call restrictions in the short-time class. On the other hand, in a zone where long calls are busy, the number of busy encounters for long calls exceeds a predetermined number. In this case, the congestion of long-duration calls can be alleviated by relatively increasing the call restriction number of the long-duration class.

Thus, limited communication resources are effectively used. Further, preferably, in the present invention (7), when a call of a certain class encounters a line busy, if there is a vacancy in the other class, the call is changed to the other class and connected. Therefore, the limited communication resources are effectively used, and the chance that the subscriber's call is connected is significantly increased regardless of the class designation.

Further preferably, in the present invention (8), when a call of a certain class encounters a line busy, the subscriber of the call is inquired of whether or not the class is changed, and
If there is a change response, the call is changed to another class and the connection is established. Therefore, for example, the important call / emergency call of the subscriber can be effectively connected. Further preferably, in the present invention (9), when there is a vacancy in another class when the time limit has been reached in the communication of a certain class, the communication is changed to the other class and continued.

Therefore, the limited communication resources are effectively used, and the subscriber can effectively extend the communication simply by continuing the communication. Further preferably, in the present invention (10), when the time limit is reached in communication of a certain class,
The subscriber of the communication is inquired as to whether or not the class has been changed, and if there is a response to the change, the communication is changed to another class and continued.

Therefore, for example, the important call / emergency call of the subscriber can be effectively extended. Further, the communication control device of the present invention (11) is a communication control device of a mobile communication system for restricting a communication time of a subscriber, in which information on a class related to a communication time limit for a subscriber and information on a zone in which the mobile station is located. And a time management table that records and manages communication time information, and a call control unit that limits the communication time of the subscriber based on the information in the time management table.

According to the present invention (11), since the communication time of the subscriber can be restricted uniformly according to the information of the class corresponding to the subscriber, it is possible to efficiently process various call time requests of the subscriber. At the same time, the control / management of the call controller is greatly reduced. Preferably, in the present invention (12), a line management table for recording and managing information on a line usage state corresponding to a class or information on the number of location registrations of mobile devices is provided for each zone, and the call control unit stores the line management table. Based on the information, manage the number of call restrictions corresponding to each class for each zone.

According to the present invention (12), the call control unit further manages the call restriction number corresponding to the class for each zone based on the information in the line management table, so that the communication status can be taken into consideration while considering the communication status of each zone. By making effective use of resources, we can always provide fair communication opportunities to subscribers of each class.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the same reference numerals indicate the same or corresponding parts throughout the drawings. FIG. 2 is a diagram showing a configuration of a mobile communication system according to an embodiment. In the figure, 1 is a private branch exchange (PBX), 2 is a wireless line switch unit, 3 is a wireless line control unit, 7 is a speech path switch unit, and 8 is The communication path control unit 100 is a public network.

With such a structure, for example, a general subscriber telephone x
Alternatively, a call from the mobile station (MS) y (direct dial method or second dial method) arrives at the PBX 1 via the public network 100. In response to this, the communication path control unit 8 connects the call to the fixed telephones h to j or the wireless line switch unit 2 side according to the dial information included in the incoming call. When the call is connected to the side of the wireless line switch unit 2, the base stations (BS) A, B, etc., make a paging of the mobile units under the control of the wireless line control unit 3, for example, from the mobile unit a. Is answered, the call is connected to the mobile device a.

When a call is made from the mobile device a or the fixed telephone h, etc., the above is reversed. FIG. 3 is a diagram showing a configuration of a wireless line control unit according to the embodiment. In the drawing, 3 is a wireless line control unit, 4 is a CPU for performing main control of the wireless line control unit 3, and 5 is a CPU.
Is a memory (MEM) composed of RAM / ROM / EEPROM or the like used by the CPU 4, and 61 and 62 are serial interfaces (SI) for inputting and outputting commands and data.
F) and 63 are common buses of the CPU 4.

The CPU (corresponding to a call control unit) 4 includes the following various functional blocks (tasks) realized by executing a program. Here, 41 is a position registration / handover processing unit, 42 is a position cancellation / handover processing unit, 4
3 is a call time class setting / change processing unit, 44 is an outgoing / incoming call processing unit, 45 is a call time monitoring / call control processing unit, 46 is a busy encounter monitoring processing unit, 47 is a line utilization rate monitoring processing unit, 4
8 is a program timer.

The memory 5 also includes the following various tables accessed by the CPU 4. Here, 51
Is a time management table that holds various management information relating to call times by subscribers for all registered subscribers a to g of the private mobile switching system, 52 is information such as line usage status by zone and class of call time restrictions Is a line management table that holds the call time table, 53 is a call time table that holds call time information for each class, and 54 is the number of long-time usable lines for calculating the ratio of the number of long-term usable lines according to the ratio of the number of registered mobile station locations in the zone. Tables (1) and 55 are long-time use line number calculation tables (2) for obtaining the long-time use line number ratio according to the zone line use rate.

Details of an example of various tables are shown in FIGS.
3 is shown. How these table data are used will be apparent from the description of the flowcharts of FIGS. Returning to FIG. 3, the function of each processing unit included in the CPU 4 will be outlined. Location registration / handover processing unit 41
Performs location registration processing of mobile devices (portable devices, vehicle-mounted devices, PHS terminals, etc.) that have moved into the wireless zone. In addition, the location cancellation / handover processing unit 42 performs location registration cancellation processing of the mobile device that has moved to the outside of the wireless zone. Furthermore, when the subscriber moves to a wireless zone during a call, the location registration / handover processing unit 41 and the location release / handover processing unit 42 cooperate to perform a handover (moving in-call zone) process.

The talk time class setting / changing processor 43
Time management table 5 according to the designated class when the subscriber calls
Set the talk time class of 1. If no class is specified at the time of calling, the default value assigned by the system in advance or the call time class that the subscriber has previously declared to the system by calling a special number or the previous call by the subscriber. Read the set talk time class.

The outgoing / incoming processing unit 44 checks the line usage status of the corresponding zone and the corresponding class of the line management table 52 based on the call time class and the zone of the calling subscriber in the time management table 51, and connects the call. Whether or not to do so is performed. The call time monitoring / call control processing unit 45 monitors the call time for each subscriber, and when the time limit has elapsed,
Performs processing such as disconnecting or extending the call.

The busy encounter monitoring processing unit 46 monitors the number of busy encounters for each class in each zone, and when the number of busy encounters exceeds a predetermined number, performs a process of changing the class distribution of the zone. Line usage rate monitoring processor 47
Performs a process of monitoring the number of location registrations in each zone and the usage rate of lines in a predetermined cycle, and performing optimal class distribution for each zone based on these information.

The program timer 48 generates timing information of various cycles and activates a corresponding process (task). Although FIG. 3 shows the configuration of a system in which various functions according to the present invention are fully implemented, in reality, necessary minimum functions are combined depending on the system scale and service content to construct an optimum communication system. It goes without saying that you can do it.

4 and 5 are flowcharts (1) and (2) of the calling process according to the embodiment. FIG. 4 shows an example (normal) of calling processing. For example, when the mobile station a in the zone A makes a call, it is input to this processing. In step S1, for example, the call duration class included in the call information of the mobile device a is referred to. In step S2, it is determined whether or not a time class is designated, and if it is designated, the designated class (for example, a long time designation) is read. If no designation is made, the default (D
Referring to the F) column, the initial value set by the system in advance or the declared value or the last designated value updated by the subscriber after the special number call is read.

In step S3, the line management table 52 is referred to by the zone A in the time management table 51, and it is checked whether or not there is a free line in the long-time class in the zone A. If there is a vacant line, "long time" is recorded in the time class designation field of the time management table 51 in step S4.
In step S5, the number of lines in use for a long time in the line management table 52 is incremented by one. In step S6, the call time table 5 is added to the call remaining time counter column of the time management table 51.
Write a long talk time of 3 (for example, 1800 seconds).
In step S7, "1" is set in the call status column of the time management table 51, and in step S8, call connection processing is performed.

If it is determined in step S3 that there is no available line, the line management table 52 is set in step S10.
Add +1 to the long-time busy encounter count column. Step S11
Then, the call disconnection (call rejection) processing is performed. FIG. 5 shows another example (option) of calling processing. In this case, instead of directly going to step S11 from step S10 of FIG.
The process proceeds to step S13 (class change processing after inquiry) or step S15 (automatic class change processing) in FIG.

When the process proceeds to step S13, the subscriber is inquired whether to change the time class and make a call.
In addition, before that, check whether there is a vacancy in other classes,
It may be configured to make an inquiry when there is a space. In step S14, the subscriber's response is monitored to determine whether the class has been changed. When the subscriber inputs the class change dial key, it is determined that the class has been changed. When the class is changed, the call time class is automatically changed (long → short / short → long) in step S15, and the process returns to step S3. In this case, if the changed class is free, the call is connected.

When the subscriber does not respond for a predetermined time, disconnects the call as it is, or inputs a dial key that does not change the class, it is determined that the class has not been changed. If the class is not changed, the process proceeds to step S11 to disconnect the call. It should be noted that the above describes the control processing when the subscriber is called, but the present invention can be applied when the subscriber is called.

That is, for example, when a subscriber receives a call from the outside, the subscriber is called by a general call,
The subscriber can specify a call class, for example, in the incoming call response. After that, the line management table 52 is referred to based on the zone in which the time management table 51 is located to check whether or not there is an available line in the zone. If there is an available line, the call is connected to the subscriber. If there is no free space, the call is disconnected or the call is connected after changing to another class. The same applies to each processing described below.

Therefore, the present invention can be applied not only to the outgoing call of the subscriber but also to the incoming call to the subscriber, and the limited line is effectively used. 6 and 7 are flowcharts (1) and (2) of the handover processing according to the embodiment. This handover process is composed of the position registration cancellation process of FIG. 6 and the position registration process of FIG. 7, and these processes alone also perform normal position registration cancellation and position registration processes.

FIG. 6 shows location registration cancellation processing. For example, when the mobile unit c in zone A moves out of service area in a non-call state,
Or, if the mobile device b in zone A moves out of range during a call,
Input to this process. In step S21, the original zone (for example, zone A in FIG. 3) of the mobile station b that has moved out of the service area is obtained from the time management table 51. Step S
At 22, the existing zone data “A” of the mobile device b is deleted. In step S23, it is determined whether or not the call state is 1 (during a call). If a call is in progress, the number of short-term busy lines in zone A of the line management table 52 is decremented by 1 in step S24. If no call is in progress, the process of step S24 is skipped. The mobile device b in this example is in a call.

In step S25, the line management table 52
The zone registration number column of zone A is decremented by -1. Step S2
In 6, the ratio of the number of long-term usable lines is calculated from the ratio of the number of position registrations after the update based on the long-term usable line number calculation table (1) of FIG. This is to dynamically adapt the number of long-term usable lines in zone A in accordance with the change in the number of registered mobile devices in zone A.

In FIG. 13A, the ratio of the number of mobile devices (position registration) is calculated by, for example, (the number of position registration / the number of usable lines) in zone A × 100 [%]. Alternatively, it may be calculated by (location registration number / number of lines in use) × 100 [%]. When the ratio of the number of location registrations in zone A is small, the possibility that the lines will be congested is small, so the ratio of the number of lines that can be used for a long time is increased so that more long-distance call services can be provided to the subscribers in zone A. . On the other hand, if the ratio of the number of registered locations is large, the line is likely to be congested. Therefore, the ratio of the number of lines that can be used for a long period of time is reduced so that the short-term call service can be provided to more subscribers in Zone A. .

The content of such a long-term usable line number calculation table (1) is theoretically determined in advance, or is determined based on simulations, experiments and the like. Furthermore, the line usage state during system operation is monitored, and if necessary, the contents of the calculation table (1) are appropriately corrected in real time. In step S27, the number of long-term and short-term usable lines is calculated based on the obtained long-term usable line ratio, and the corresponding column of zone A of the line management table 52 is updated.

FIG. 7 shows the location registration processing. For example, when the mobile station d moves to zone B in a non-communication state, or the mobile station b in zone A hands over to zone B, this processing is input. Here, an example of the mobile device b will be mainly described. The process of the mobile device d is the same up to step S34. In step S31, the identification information (subscriber number etc.) of the mobile device b is obtained from the position registration (request) information of the mobile device b. In step S30, the newly moved zone B is recorded in the existing zone column of the mobile device b in the time management table 51. In step S31, the number of location registrations in zone B of the line management table 52 is incremented by one. In step S32, the ratio of the number of long-term usable lines is calculated from the ratio of the number of location registrations in zone B based on the long-term usable line number calculation table (1). In step S33, the number of long-term usable lines and the number of short-term usable lines are obtained based on the obtained long-term usable line ratio, and the corresponding column of zone B of the line management table 52 is updated.

In step S34, the time management table 51
Check whether or not the call state of 1 is 1. In the case of the mobile device b, the call state is 1, so the flow proceeds to step S35, and it is checked whether or not there is an available call line in the short time class of zone B of the line management table 52. If there is space, step S
At 36, the number of lines in use in zone B is incremented by one. In step S37, an idle call channel is assigned and the call state is continued.

If necessary, in step S38, 180 seconds is set in the remaining call time counter of the mobile station b. In this case, the mobile device b is treated as a new short-time caller in zone B. If it is determined in step S35 that there is no vacant class for a short time, "0" is set to the call state of the mobile device b in step S39, and the call of the mobile device b is disconnected in step S40.

Even if there is no vacant class for a short time in the determination in step S35, the call class changing process / in FIG. 5 can be performed in the same manner as the call originating process in FIG. In this case, if subscriber b changes the call class,
Returning to step S35, the service for the long time class can be received. Further, in the determination in step S34,
In the case of the mobile device d, the call state is 0, so the processing directly ends.

8 and 9 are flowcharts (1) and (2) of the call time monitoring / call control processing according to the embodiment. FIG. 8 shows a call time monitoring / call disconnection process. When the program timer 48 counts, for example, a one-second interval, it interrupts and inputs this process. Alternatively, this task process is activated.

In step S41, the time management table 51
It is checked whether or not the call state is 1 for the first subscriber of the above. If the call state is 0, there is no need to monitor the time, and the process is terminated. Then immediately re-enter this process to look up the next subscriber. That is, every subscriber column of the time management table 51 is scanned every second. If it is determined in the above step S41 that the call state is 1, step S4
In step 2, the remaining talk time counter of the subscriber is decremented by -1 second.
In step S43, it is determined whether or not a time-out (counter = 0) has occurred.

Although not shown, outside this process, it is determined whether or not all subscribers have been checked, and if not checked, the subscriber column is updated (+1) and re-input to this process. If it is determined that the time is out in step S43, the call of the subscriber is disconnected in step S44. In step S45, the call state of the subscriber is set to "0". In step S46, the line management table 5
From the column of the number of lines in use in 2, add -1.

In this example, the case where all the subscriber columns of the time management table 51 are scanned (batch processing) at 1 second intervals has been described, but the present invention is not limited to this. In short, the remaining time counter of each subscriber is only required to be decreased by 1 second at intervals of -1 second. Therefore, in order to process one subscriber at a time, (1 second) / ( All subscribers may be entered at intervals. By doing so, the processing targets of the CPU 4 can be dispersed, and the real-time property is improved. This point is the same in the following description.

FIG. 9 shows a call time monitoring / call extension process. When this option is adopted, a subscriber who is designated for a short time class can receive an extension (change) service for a long time class call. That is, in this case, step S43 of FIG.
Does not directly go to step S44, but proceeds to step S47 (call extension process) in FIG. In step S47, it is determined whether or not (call time class) = (short time).

In this example, since the call time of 30 minutes has already been given to the subscriber who is not short in time, the change to the long time class is not permitted from the viewpoint of fairness. In this case, the process returns to step S44 to disconnect the call. On the other hand, in the case of a short-time subscriber, it is further checked in step S48 whether or not there is a vacant line available for a long time in the zone. If there is no vacant line, the call is disconnected in the same manner as above. If there is a vacancy in the long-time class line, the inquiry processing of the following steps S49 and S50, which is one form of the optional service, is performed.

That is, in step S49, the subscriber is inquired whether to change (extend) the call time. In step S50, it is determined whether or not the class has been changed. If the subscriber returns a response with no change by the special number input, or if there is no response from the subscriber within a predetermined time, it is determined that the class has not been changed. In this case, the call is disconnected in the same manner as above.

On the other hand, when the subscriber returns a response to the change request by inputting the special number, the column of the number of lines in use of the zone of the line management table 52 is updated in step S51. That is, -1 is added to the number of lines in use for a short time, and +1 is added to the number of lines in use for a long time. In step S52, the time class column of the subscriber in the time management table 51 is changed to a long time. In step S53, the call remaining time counter is set to 1
Set 800 seconds.

The inquiry processing in steps S49 and S50 may be deleted. In this case, if there is a vacancy in the long-time class, the class is automatically changed to the long-time class and the call is extended without inquiring the subscriber.
FIG. 10 is a flowchart of the busy encounter monitoring process according to the embodiment. FIG. 10A shows a short-time busy monitoring process, and when the program timer 48 counts, for example, a 180-second interval, it inputs an interrupt to this process. Alternatively, this task is activated.

In step S71, the line management table 52
The first zone of (the number of short-time busy encounters)>
It is determined whether or not (short time busy specified number). If (the number of short-time busy encounters)> (the specified number of short-time busy) is not satisfied, this process is exited and the process is re-input for the determination of the next zone. Then, in the case of (Short-time busy encounter count)> (Short-time busy prescribed count) in the determination of step S71 for a certain zone, the line of the short-time class is more crowded than the system predicted, so the process is performed in step S
Proceed to 72 to update the usable line number column of the zone. That is, for example, the number of usable lines for a long time is decremented by -1, and the number of usable lines for a short time is decremented by +1. In step S73, the short-time busy encounter frequency column is cleared.

In this process, an interrupt may be input at intervals of (180 seconds) / (total number of zones) in order to process one zone at a time. FIG. 10 (B) shows the long-time busy monitoring process, and the program timer 48 is set to 1
When the 800-second interval is counted, an interrupt is input to this process. Alternatively, this task is activated.

In step S74, the line management table 52
The first zone of (number of long-time busy encounters)>
It is determined whether or not (a long time busy specified number of times). If (number of times of long-term busy encounter)> (number of times of long-term busy encounter) is not satisfied, this process is exited and the process is re-input to this process for determining the next zone. Then, in the case of (the number of long-time busy encounters)> (the number of long-time busy regulations) in the determination of step S74 for a certain zone, since the line of the long-time class is more busy than the system predicted, the process is performed in step S74.
Proceed to 75 to update the usable line number column of the zone. That is, for example, the number of usable lines for a short time is decremented by -1, and the number of usable lines for a long time is decremented by one. In step S76, the long-time busy encounter frequency column is cleared.

In this process, an interrupt may be input at intervals of (1800 seconds) / (total number of zones) in order to process one zone at a time. FIG. 11 is a flowchart of the line utilization rate monitoring process according to the embodiment. FIG.
(A) shows the line usage rate monitoring processing (1) based on the ratio of the number of mobile station location registrations. When the program timer 48 counts, for example, a 600-second interval, an interrupt is input to this processing. Alternatively, this task is activated.

In step S81, the line management table 52
Based on the number of position registrations in the first zone and the number of usable lines, the ratio of the number of usable lines to the number of mobile units = (number of position registered / number of usable lines) × 100 [%] is calculated. The number of mobile units = (number of location registrations / number of lines in use) x 10
You may make it obtain | require 0%. In step S82, the calculated long-term usable line number calculation table (1) in FIG. 13 (A) is used to find the corresponding long-term usable line number ratio. In step S83, the number of long-term usable lines and the number of short-term usable lines are obtained based on the obtained long-term usable line ratio, and are recorded in the corresponding column of the line management table 52.

Although not shown in the figure, a process for re-inputting to this process is immediately performed in order to process the next zone outside this process, and this process is exited when the process for all zones is completed. In addition, in order to process one zone at a time, interrupt processing may be performed at intervals of (600 seconds) / (total number of zones), for example.

FIG. 11B shows the line utilization rate monitoring processing (2) based on the line utilization rate.
When 8 counts, for example, an interval of 600 seconds, it inputs an interrupt to this process. Alternatively, this task is activated. Step S82
Then, the line usage rate = (total number of used lines / total number of usable lines) × 100 [%] is obtained based on the total number of usable lines and the number of all used lines in the first zone of the line management table 52. In step S85, the calculated line usage rate is used as shown in FIG.
By referring to the long-time usable line number calculation table (2) in (B), the corresponding long-time usable line number ratio is obtained.

In FIG. 13B, in this example, when the line usage rate of a certain zone is small, the lines are not crowded, so the ratio of the number of long-time usable lines is increased to increase the number of subscribers in the zone. To be able to provide long-term call service. On the other hand, when the line usage rate is high, the lines are busy, so the ratio of the number of lines that can be used for a long time is reduced so that the short-term call service can be provided to more subscribers in the zone.

The content of such a long-term usable line number calculation table (2) is theoretically determined in advance, or is determined based on simulations, experiments, or the like. Furthermore, the line usage status during system operation is monitored, and if necessary, the contents of the calculation table (2) are appropriately corrected in real time. In step S86, the number of long-term usable lines and the number of short-term usable lines are calculated based on the obtained long-term usable line ratio, and are recorded in the corresponding column of the line management table 52.

Although not shown in the figure, outside of this process, the next zone is processed so that the process is immediately re-input to this process, or when the process of all zones is completed, this process is exited. In addition, in order to process one zone at a time, interrupt processing may be performed at intervals of (600 seconds) / (total number of zones), for example. In the above embodiment, the case of two classes of long-time call and short-time call has been described, but it is possible to manage by providing three or more time classes such as long-time call, medium-time call and short-time call. good. Furthermore, a class of unlimited time call may be included.

Further, although an example of application to the telephone service has been described in the above embodiment, it goes without saying that the present invention can also be applied to a general data communication service including image data and other data communication. Further, although an example of application to a private branch exchange (PBX) has been shown in the above-described embodiments, the present invention is an exchange station, a radio network controller, a base station that constitutes a general mobile network (automobile phone, mobile phone, PHS, etc.). It goes without saying that it can be applied to stations and the like.

In the above embodiment, the relationship between the base station and the mobile device has been described. For example, in a simple home switching system, the base station is realized as a master device such as a cordless telephone and the mobile device is realized as a slave device. Is also good. Further, the communication channels according to the above embodiments include various communication channels by time division, frequency division, spread division of bands and codes, as well as virtual communication channels for ATM and packet switching.

Although the preferred embodiments of the present invention have been described above, it goes without saying that various changes can be made to the configuration, control, and combinations thereof without departing from the spirit of the present invention.

[0066]

As described above, according to the present invention, each subscriber of a plurality of communication classes can be given fair communication opportunities,
Therefore, the probability of encountering a line busy is reduced. Further, even if a line busy is encountered, an opportunity to use the line is given after a short waiting time, and the serviceability to the user of this type of mobile communication system is significantly improved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is a diagram showing a configuration of a mobile communication system according to an embodiment.

FIG. 3 is a diagram showing a configuration of a wireless line control unit according to the embodiment.

FIG. 4 is a flowchart (1) of a calling process according to the embodiment.

FIG. 5 is a flowchart (2) of a calling process according to the embodiment.

FIG. 6 is a flowchart (1) of a handover process according to the embodiment.

FIG. 7 is a flowchart (2) of a handover process according to the embodiment.

FIG. 8 is a flowchart (1) of a call duration monitoring / call control process according to the embodiment.

FIG. 9 is a flowchart (2) of the call duration monitoring / call control processing according to the embodiment.

FIG. 10 is a flowchart of a busy encounter monitoring process according to the embodiment.

FIG. 11 is a flowchart of a line utilization rate monitoring process according to the embodiment.

FIG. 12 is a diagram (1) illustrating various tables according to the embodiment.

FIG. 13 is a diagram (2) illustrating various tables according to the embodiment.

[Explanation of symbols]

 1 private branch exchange (PBX) 2 wireless line switch unit 3 wireless line control unit 4 CPU 5 memory 7 speech path switch unit 8 speech path control unit 100 public network

Front page continuation (72) Minako Matsuzaki, 3-9-18 Shin-Yokohama, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Fujitsu Communication Systems Ltd. (72) Naoko Hashiguchi 3--9, Shin-Yokohama, Kohoku-ku, Yokohama, Kanagawa Prefecture No. 18 within Fujitsu Communication Systems Limited

Claims (12)

[Claims] 1. A communication time limit method for a mobile communication system for limiting a communication time of a subscriber, wherein the communication time limit is classified into a plurality of stages and a time limit corresponding to a class is assigned to each subscriber. In addition, a communication time limit method characterized by managing the number of call limits for each class. 2. The communication time limiting method according to claim 1, wherein the subscriber allocates the time limit of the corresponding class based on the class designated at the time of calling. 3. The communication time limiting method according to claim 1, wherein the subscriber assigns a time limit for the corresponding class based on the class declared in advance by the subscriber. 4. The number of call restrictions corresponding to each class for each zone is determined based on the number of registered mobile stations in the zone and the number of predetermined communication channels available in the zone. Communication time limit method of 1. 5. The class-specific call limit number for each zone is determined based on a predetermined number of communication channels available in the zone and the number of channels in communication within the number of communication channels. The communication time limiting method according to claim 1. 6. The number of busy encounters of calls for each class is measured, and when the number of busy encounters exceeds a predetermined number, the call limit number corresponding to the class of the zone is changed. Item 1 Communication time limit method. 7. When a call of a certain class encounters a line busy and another class has a vacancy, the call is changed to the other class and connected.
3 to 3 communication time limitation method. 8. When a call of a certain class encounters a line busy, the subscriber of the call is inquired of whether or not the class is changed, and when the change is answered, the call is changed to another class. The connection is made by connecting them by means of.
Communication time limit method. 9. The communication is changed to the other class and continued if there is a vacancy in the other class when the time limit has been reached in the communication of the certain class.
3 to 3 communication time limitation method. 10. When the time limit for communication of a certain class is reached, the subscriber of the communication is inquired of whether or not the class is changed, and when there is a response of the change, the communication is changed to another class. 4. The communication time limiting method according to claim 1, wherein the communication time limiting method is continued. 11. A communication control device for a mobile communication system which limits a communication time of a subscriber, records and manages class information, zone information and communication time information relating to a communication time limit for a subscriber. A communication control device, comprising: a time management table for controlling the communication time of the subscriber based on information in the time management table; 12. A line management table is provided for recording and managing information on a line usage status corresponding to a class or information on the number of location registrations of mobile units for each zone. The communication control device according to claim 11, wherein a call limit number corresponding to a class is managed.