JPH08336180A - Method for controlling call connection of mobile communication system - Google Patents

Abstract

PURPOSE: To reduce the control traffic required for a location registration and a call in a mobile communication system. CONSTITUTION: A mobile communication system is composed of plural radio zones and provides plural mobile terminals with communication services of plural classifications. The information on the allowable degree of the delay of a call connection is added to the call to a mobile terminal MS1 (to MSn) and when a call connection delay is not allowed from the information on this allowable degree, a simultaneous call is performed for the mobile terminal to be the incoming object of the call from all the radio zones CL1 to CL9 (CL10 to CL12, CLn) of a location registration area LRA1 (to LRAx). When the call connection delay is allowed, the calls to the mobile terminal to be the incoming object of the call by the radio zone unit of the part of the location registration area are successively performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call connection control method for a mobile communication system for providing a plurality of types of communication services to a plurality of mobile terminals.

[0002]

2. Description of the Related Art Mobile communication systems such as car phones and mobile phones have been put into practical use, but in recent years, in order to cope with the increase in the number of subscribers in such mobile communication systems, a plurality of radios are provided within a service area. A method of arranging base stations and using the same frequency between the shortest radio base stations capable of repeating frequencies is used.

That is, in a mobile communication system such as a car phone and a mobile phone, a location registration area is set in a wide area unit such as covering a prefecture area or a region in the prefecture, and a plurality of radio base stations are set in this area. The location is distributed so that the location of the mobile terminals in the location registration area area can be registered on the system side, and when there is an incoming call, all the radio base stations simultaneously broadcast in the location registration area area. Call the called mobile terminal, secure a communication line with the calling terminal via the wireless base station that received the response from the called mobile terminal, and make communication so that the calling terminal In this case, this is notified to the system side via the wireless base station that received the call from this mobile terminal, and the system side has registered its position from the position registration information of the called mobile terminal. Calls the called mobile terminals all at once via each rear radio base station, and establishes a communication line with the calling terminal via the radio base station that receives a response from the called mobile terminal, and performs communication. This enables mobile terminal communication.

In such a mobile communication system,
By reducing the size of the radio zone formed by one radio base station, the radio frequency band can be used more efficiently, and a larger number of subscribers can be accommodated.

FIG. 9 is a block diagram showing the structure of a conventional mobile communication system. In the figure, MS1 to MSm are mobile terminals, CL1 to CLn are wireless zones, BS1 to BSn are wireless base stations, LRA1 to LRAx are location registration areas, and 20
Reference numeral 1 is a mobile communication control device, and 202 is a mobile communication wired line. Among these, mobile terminals MS1 to MS are mobile terminals that can receive communication service provided by the mobile communication system.

[0006] The radio base stations BS1 to BSn are base stations for radio communication distributed in the area where the mobile communication system provides services, and the radio zones CL1 to CLn correspond to the radio base stations BS1 to BSn, respectively. This is the area where wireless communication is possible. Here, the area where the radio waves of the radio base station BS1 can be received is the radio zone CL1,
The area where the radio waves of the radio base station BS2 can be received is the radio zone CL2, the area where the radio waves of the radio base station BS3 can be received is the radio zone CL3, and so on.

The location registration areas LRA1 to LRAx are areas for management control in which the location of each mobile terminal is registered in units of a plurality of different radio zones and a call is made when the mobile terminal receives an incoming call. .

The mobile communication control device 201 also registers the position of each mobile terminal in units of the location registration areas LRA1 to LRAx, makes a call when there is an incoming call to the mobile terminal, and after call connection. In accordance with the movement of the mobile terminal between the wireless zones of the mobile terminal, control is performed such as switching the communication path so that the communication of the mobile terminal is continued through the wireless base station that serves the wireless zone of the moving destination. , And includes calling means PMB for controlling the calling of the mobile terminal when the mobile terminal receives the call.

The operation of such a conventional mobile communication system will be described below. The mobile communication control device 201 periodically makes a call for location registration to each mobile terminal via each radio base station, and each mobile terminal transmits its own ID (identification code) in response to this call. The radio base station which receives this sends the information to the mobile communication control device 201. The mobile communication control device 201 registers the location corresponding to this information and the location registration area to which the received wireless base station belongs, and prepares for an incoming call to the mobile terminal.

Alternatively, when the power of each mobile terminal is turned on, when the wireless zone is changed, or when the mobile terminal enters the area from outside the wireless communication service area, each mobile terminal sends a position registration request together with its own ID ( Identifying code)
Is transmitted, and the wireless base station which receives this transmits the information to the mobile communication control device 201. The mobile communication control device 201 registers the location corresponding to this information and the location registration area to which the received wireless base station belongs, and prepares for an incoming call to the mobile terminal.

In this way, the position registration of the mobile terminal is performed for call connection, and when the mobile terminal receives an incoming call, the mobile communication control device 201 causes the calling means PMB to register the position of the mobile terminal. Controls to make a call in all the wireless zones within.

As a result, all the radio base stations in the location registration area in which the target mobile terminal to be called is registered are called to the called mobile terminal. When the mobile terminal of the call target responds, the mobile communication control device 2
01 is returned, and the mobile communication control device 2
At 01, the communication path between the mobile terminal of the call-in target and the terminal of the caller is secured via the receiving base station, and communication between both terminals is enabled.

In such a conventional mobile communication system,
When a mobile terminal receives an incoming call, a call signal is transmitted all at once from each radio base station in all the radio zones belonging to the location registration area in which the location of the mobile terminal is registered to call the mobile terminal. It will be.

However, although the mobile terminal to be called is located in a specific radio zone within the location registration area and can communicate only with a radio base station that is responsible for communication services in that radio zone, Communication with wireless base stations in other wireless zones is not possible. And since the location registration area is wide and the number of wireless base stations in the location registration area is large,
The transmission of the call signal by the radio base station in the radio zone in which the mobile terminal to be called is not located is completely useless.

Each time a mobile terminal receives an incoming call, such a call signal is transmitted from each radio base station in the radio zone belonging to the location registration area in which the location of the mobile terminal is registered. The station will unnecessarily increase call traffic.

In order to reduce the traffic of each radio base station and to efficiently operate the radio line, it seems that the location registration area should be narrowed. However, when the location registration area is narrowed, this time. Since there is a high possibility that the mobile terminal will immediately move to another location registration area, location registration must be performed frequently, resulting in an increase in location registration traffic although the call traffic is reduced.

As described above, there is a trade-off between the location registration traffic and the call traffic regarding the size of the location registration area. Therefore, a method of setting the location registration area based on the mobility and the incoming call rate of each mobile terminal has been considered.

However, such a location registration system and a calling system do not consider future mobile communication as multimedia. Therefore, when communication by various media is performed in the mobile communication system, it is useless. Control traffic will also occur.

[0019]

A conventional mobile communication system includes a plurality of mobile terminals MS1 to MSm, a plurality of radio zones CL1 to CLn, and a plurality of the radio zones, which are provided with communication services by the mobile communication system. CL1-C
A plurality of radio base stations BS1 to BSn forming Ln, location registration areas LRA1 to LRAx configured to include the plurality of radio zones CL1 to CLn, and at least one or more movements controlling the mobile communication system. A communication control device 201, and a mobile communication wired line 202 that connects the radio base stations BS1 to BSn to the mobile communication control device 201.
In such a conventional mobile communication system, the mobile terminal performs location registration for call connection to the mobile terminal, and the calling means PMB receives an incoming call to the mobile terminal, The mobile terminal makes a call in all wireless zones within the location registration area where the location is registered.

In such a mobile communication system, there is a trade-off between the location registration traffic and the call traffic regarding the size of the location registration area. Therefore,
A method of setting the location registration area based on the mobility and the incoming call rate of each mobile terminal is considered.

However, such a location registration system and a calling system do not take into consideration the future multimedia use of mobile communication, so that it becomes useless when communication by various media is performed in the mobile communication system. There is a problem that control traffic occurs.

Therefore, it is desired to develop a technique capable of reducing such useless control traffic at the time of call connection control. An object of the present invention is to provide a call connection control method for a mobile communication system, which solves the problems in the mobile communication system described above and can reduce the control traffic required for location registration and calling. To do.

[0023]

In order to achieve the above object, the present invention is constructed as follows. That is, in a mobile communication system configured to provide a plurality of wireless zones for each location registration area and capable of providing a plurality of types of communication services to a mobile terminal, firstly, a call to a mobile terminal is connected to a call connection. The delay tolerance information is added, and if the call connection delay is not permitted from this tolerance information, the mobile terminals to which the call is to be received are simultaneously called in all wireless zones in the location registration area. When the call connection delay is allowed, the mobile terminals to which the call is to be received are sequentially called in units of wireless zones of a part of the location registration area.

Secondly, a permissible time limit value for a call when a call is made to the mobile terminal is determined for each call type, and a timer function for monitoring the call time is provided.
In addition, the call connection delay allowance information is added to the call to the mobile terminal, and if the call connection delay is not allowed from this allowance information, the call reception target of all the wireless zones in the location registration area The mobile terminals are simultaneously called, and when the call connection delay is allowed, the mobile terminals to which the call is to be received are sequentially called in units of some wireless zones in the location registration area. , The above each call is limited to the allowable time limit corresponding to the call type,
It is characterized by calling all at once in all wireless zones in the location registration area.

Thirdly, the position of each mobile terminal is held as the last call existing zone position information corresponding to the used wireless zone at the time of the final call of the mobile terminal, and when a call to the mobile terminal occurs. , Based on the end-of-call existing zone position information of the mobile terminal of the incoming call for the call, the first call is made in the wireless zone corresponding to the end-of-call existing zone position information, and the response from the mobile terminal of the incoming call If not, then the paging is performed in all other wireless zones in the location registration area where the location of the mobile terminal is registered.

Fourthly, the position of each mobile terminal is held as end-of-call existing zone position information corresponding to the wireless zone used at the end of the call of the mobile terminal, and the call connection of the mobile terminal to the call connection is established. If information on the delay tolerance is added, and if the call connection delay is not permitted from this tolerance information, the presence at the time of termination of the call based on the zone position information of the mobile terminal of the incoming call target for the call The first call is made in the wireless zone corresponding to the zone position information, and when the call connection delay is permitted, the call termination based on the zone presence information at the time of termination of the mobile terminal of the call receiving target for the call is made. When there is no response from the called mobile terminal when the first call is made in a wireless zone that supports location information or in some wireless zones in the location registration area that includes this wireless zone Then, characterized in that to perform a call to the other call recipient mobile terminal of the call in some radio zone unit location registration location registration area of the mobile terminal sequentially.

[0027]

According to the first aspect of the present invention, the information on the tolerance of the call connection delay is added to the call to the mobile terminal. When the delay of the call connection is not permitted from the information on the tolerance, the entire position registration area is added. In the wireless zone, the mobile terminals to which the call is to be received are simultaneously called, and when the call connection delay is allowed, the mobile terminals to which the call is to be received in units of part of the wireless zone in the location registration area. Calls are sequentially made.

In the present invention, when the call connection delay is allowed, the mobile terminals to which the call is to be received are sequentially called in units of some wireless zones in the location registration area. Since the traffic for calling a call is reduced, a traffic reduction effect can be expected.

In the second aspect of the invention, the allowable time limit value for a call when a call is made to the mobile terminal is determined for each call type, and a timer function for monitoring the time of the call is provided to set the allowable time limit value. You can limit the call time to the upper limit. In addition, the call connection delay tolerance information is added to the call to the mobile terminal. If the call connection delay is not permitted from this tolerance information, the call receiving target in all wireless zones in the location registration area All the mobile terminals are called at once, and when the call connection delay is allowed, the mobile terminals to which the call is received are sequentially called in a part of the wireless zone of the location registration area, Furthermore, each of the above calls has an upper limit of the permissible time limit corresponding to the call type,
abort.

According to the present invention, when the call connection delay is allowed, the mobile terminals to which the call is to be received are sequentially called in units of a part of the wireless zones of the location registration area. , Because the traffic for calling to the call decreases, not only can the traffic reduction effect be expected, but the call is terminated to the upper limit of the permissible time limit corresponding to the call type, so the call does not continue unnecessarily for a long time, This can be expected to further reduce the traffic.

According to the third aspect of the invention, the position of each mobile terminal is held as the zone information of the existing zone at the time of termination corresponding to the used wireless zone at the time of termination of the mobile terminal, and a call to the mobile terminal is generated. When the call is made, the mobile terminal which is the call receiving target makes the first call in the wireless zone corresponding to the call receiving existing zone position information based on the position information when the call ending target zone of the call receiving target. If there is no response from, then all of the other wireless zones in the location registration area in which the location of the mobile terminal is registered are called all at once.

According to the present invention, since a call for a call to a mobile terminal is first made from the wireless zone used when the mobile terminal makes a final call, there is a high probability that the mobile terminal to be called will respond, and the other wireless zone Therefore, the traffic reduction effect can be expected in that unnecessary calls are not made. When the call connection delay is allowed, the mobile terminals to which the call is to be received are sequentially called in units of a part of the wireless zones of the location registration area. Since the traffic for calling is reduced, a further traffic reduction effect can be expected.

According to the fourth aspect of the invention, the position of each mobile terminal is held as the zone information of the existing zone at the time of termination corresponding to the wireless zone used at the time of termination of the mobile terminal, and the call connection to the mobile terminal is made. When the call connection delay is not allowed based on this tolerance information, the end time of the call is terminated based on the existing zone position information of the mobile terminal of the call receiving target for the call. The first call is made in the wireless zone corresponding to the existing zone position information, and when the call is allowed to delay the call connection, based on the final call existing zone position information of the mobile terminal of the call receiving target for the call, The first call is made in the wireless zone that corresponds to the location information at the time of the call termination or in some wireless zones within the location registration area that includes this wireless zone, and the response from the mobile terminal that is the callee Itoki is then sequentially performed a call to other intended recipient of the mobile terminal in some radio zone units the call location registration location registration area of the mobile terminal.

According to the present invention, since a call for a call to a mobile terminal is first made in the wireless zone used when the mobile terminal makes a final call, there is a high probability that the mobile terminal to be called will respond, and the other wireless zone Therefore, the traffic reduction effect can be expected in that unnecessary calls are not made. When the call connection delay is allowed, the mobile terminals to which the call is to be received are sequentially called in units of a part of the wireless zones of the location registration area. Since the traffic for calling is reduced, a further traffic reduction effect can be expected.

[0035]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a mobile communication system according to the first embodiment of the present invention. The mobile communication system of the present embodiment includes a plurality of mobile terminals MS1 to MSm that are provided with communication services by the mobile communication system,
A plurality of wireless zones CL1 to CLn and a plurality of wireless base stations BS1 to BS1 forming the plurality of wireless zones CL1 to CLn
BSn and location registration areas LRA1 to LRAx configured to include the plurality of wireless zones CL1 to CLn,
At least one or more mobile communication control devices 100 that control the mobile communication system, and the respective radio base stations BS1 to BSn.
And a mobile communication wired line 102 connecting the mobile communication control device 100 with the mobile communication control device 100.

The mobile communication control device 100 is for controlling the call connection between the call originator and the callee when a call occurs. When the call occurs, the mobile communication control device 100 calls the mobile terminal of the callee. It is for performing control for performing.

Further, the mobile communication control device 100 has at least one or more calling means PMA1 to PMAk, and a calling procedure selecting means for selecting one of the calling means PMA1 to PMAk according to the type of communication. And 101. The calling means PMA1 to PMAk store a procedure for calling a mobile terminal and control the calling according to the procedure. When the mobile terminal receives a call, the calling means PMA1 to PMAk are used to connect the call. It depends on the tolerance of the call connection delay that may occur in.

That is, in this system, the tolerance of the call connection delay is given according to the information to be communicated, and the call is made according to the tolerance and the delay stage of the call connection depending on the traffic of the wireless line. I am able to

The calling means PMA1 to PMA1 are controlled to perform a call according to the allowable delay stage.
PMAk, for example, the calling means PMA1 has a shortest allowable delay time “level 1”, the calling means PMA2 has a slightly longer allowable delay time “level 2”, and the calling means PMA3 has an allowable delay time. Assuming that the "level 3" is longer than that and the calling means PMAk has the longest allowable delay time "level k", the corresponding calling means PMA1 to PMAk are selected according to the tolerance.

The "level 1" calling means PMA1 controls the called mobile terminal to call through all the wireless base stations in the corresponding location registration area where the location is registered, and the "level 2" The calling means PMA2 makes a call through some wireless base stations in the corresponding location registration area in which the called mobile terminal is registered, and if there is no response, the called mobile terminal is registered. Among the wireless base stations in the corresponding location registration area, control is performed to make the second call via all remaining wireless base stations except the wireless base station used for the first call. , "Level 3" calling means PMA3 calls through some wireless base stations in the corresponding location registration area where the called destination mobile terminal is registered, and if there is no response, the called party Move Of the wireless base stations in the corresponding location registration area where the end is registered, the second call is made through some of the remaining wireless base stations except the one that was used for the first call. If there is no response, the wireless base stations used in the first and second calling are excluded from the wireless base stations in the corresponding location registration area where the called mobile terminal is registered. , The call means PMAk of "level k" waits until the traffic is alleviated, and then the called-destination mobile terminal is controlled to make the third call through all the remaining radio base stations. Is called via some wireless base stations in the corresponding location registration area where
If there is no response, all remaining wireless base stations in the corresponding location registration area where the destination mobile terminal is registered, excluding the wireless base station used in the first call. It is configured to perform call control such as making a second call through the station.

The call connection delay tolerance is set on the calling terminal side to make a call, and the calling procedure selecting means 10 is used.
Reference numeral 1 refers to the information on the tolerance of the call connection delay sent from the calling terminal side at the time of calling to call these calling means PMA.
It is configured to select the optimum one from 1 to PMAk.

The tolerance of the call connection delay is, for example, "level 1" in the case of voice communication or emergency data, and "level 2" in the case of data such as messages or memos with low urgency.
For example, the level of "level 3" or "level 3" is set so that the level that has time to transmit is "level k-1" or "level k".

The control for location registration in units of location registration areas in which the mobile terminal exists and the function of holding location registration information obtained as a result thereof are provided in the existing mobile communication system. Since it is performed by the position information storage device having the information registration control function, the mobile communication control device 100 refers to the information of the function as necessary.

Next, as an example of the mobile communication system configured as described above, when an incoming call is made to a certain mobile terminal, the The operation when selecting the calling means for calling the mobile terminal will be described.

In FIG. 1, the calling means is PM.
Although there are k types of configurations from A1 to PMAk,
For simplification of the description, two calling means PMA1 corresponding to "level 1" and calling means PMA2 corresponding to "level 2" will be described here.

Therefore, the calling means used when the tolerance of the call connection delay is small is the calling means PMA1, and the calling means used when the tolerance of the call connection delay is large is the calling means PMA2.

FIG. 2 is a flow chart showing an operation example of the mobile communication control device when the mobile terminal receives a call in the mobile communication system according to the first embodiment of the present invention. A description will be given according to this flow chart.

When making a call, the terminal on the calling side that intends to communicate with the mobile terminal notifies the mobile communication control device 100 of the tolerance regarding the call connection delay of the communication. Then, in the mobile communication control device 100 having received this, the calling procedure selecting means 101 selects the optimum one of the calling means PMA1 to PMAk based on the information on the tolerance regarding the call connection delay ( 2 S1).

For example, when the tolerance regarding the call connection delay is small and the allowable call connection delay time is short, the calling procedure selecting means 101 selects the calling means PMA1. As a result, the calling means PMA1 controls to call the called mobile terminal via all the radio base stations in the location registration area in which the called mobile terminal is registered, and based on this control output. As a result of the mobile communication control device 100 controlling the call to the constituent wireless base stations of the location registration area where the location of the called mobile terminal is registered, the called mobile terminals are called simultaneously. (S2 in FIG. 2).

Then, if there is a response from the incoming call-target mobile terminal (S3 in FIG. 2), the calling terminal and the incoming call-target mobile terminal are connected by call to enable communication (S4 in FIG. 2). If there is no response from the mobile terminal that is the callee (S3 in FIG. 2), it is treated as a call loss, the call is stopped, and a notification that the connection cannot be made is made to the calling terminal (S5 in FIG. 2).

As described above, when the tolerance regarding the call connection delay is small and the allowable call connection delay time is short, the call receiving mobile terminal is notified via all the radio base stations in the location registration area in which the called mobile terminal is registered. By controlling to call the incoming mobile terminal, for example, the location registration area LRA1
When there is an incoming call to the mobile terminal MS1 whose location is registered in, the call can be made in all the wireless zones included in the location registration area LRA1, and the called mobile terminal has its power turned off or the underground. If the user is not in a place where the radio wave condition is poor, these operations enable quick call and call connection to the called mobile terminal without delay in call connection.

On the other hand, if the tolerance for the call connection delay received from the calling side is large (S1 in FIG. 2), a call with a long allowable call connection delay time has arrived at the mobile terminal of the call receiving target. It will be. In this case, the calling procedure selecting means 101 of the mobile communication control device 100 calls the calling means P.
MA2 will be selected.

Then, an operation example of the calling means PMA2 will be described below. When the calling means PMA2 is selected, the calling means PMA2 receives the first call of the incoming call target mobile terminal via some wireless base stations in the location registration area in which the incoming call target mobile terminal is registered. If a call is made (S6 in FIG. 2) and there is a response from the call-incoming mobile terminal to the first call, the call-out terminal and the call-incoming mobile terminal are received via the radio base station that has received the response. And call are connected to enable communication (S7 and S8 in FIG. 2).

On the other hand, if there is no response from the called mobile terminal to the first call, a second call is made via the radio base station in the location registration area that has not made the first call. Perform (S7, S9 in FIG. 2).

If there is a response from the call-incoming mobile terminal to the second call, the call-in terminal and the call-incoming mobile terminal are connected by call via the radio base station that has received the response for communication. Enable (S10, S11 in FIG. 2).

However, if there is no response from the called mobile terminal to the second call, it is treated as a call loss, the call is stopped, and a notification that the connection cannot be made to the calling terminal (Fig. 2 S12).

It should be noted that each of the above-mentioned calling operations can be repeated three or more times.
Due to these operations, if the tolerance for call connection delay is large, calling is not performed simultaneously from all base stations in the location registration area, but rather is called sequentially in units of some base stations. By actively causing the call connection delay, it becomes possible to reduce the call traffic at each base station. Further, if the number of calls is increased, the possibility that a large call connection delay will occur increases, but on the other hand, the call traffic can be further reduced.

Another call control example will be described. As described in Japanese Patent Application No. 6-324151, as a method of selecting the wireless zone for making the first call and the wireless zone for making the second call described above, in the mobile terminal of the incoming call, The wireless zone in which the mobile terminal was present when the last call at that mobile terminal ended,
Alternatively, it is possible to use a method of making a first call with at least one or more wireless zones in the vicinity of the wireless zone. In this case, when the mobile terminal of the incoming call ends the immediately preceding call, the mobile communication system knows in which radio zone the mobile terminal was. Although it is not known how the mobile terminal moves according to the behavior of the user, in many cases, the first call is made at the latest end of the call by using the trend characteristic that the mobile terminal rarely moves so much. The first call is made in the wireless zone in which the mobile terminal existed, or in at least one or more wireless zones in the vicinity of the wireless zone. Hereinafter, regarding the operation when this method is used explain.

As an operation example in the case where the mobile terminal receives a call with a high tolerance regarding the call connection delay and a long call connection delay time that can be tolerated, the location of the called mobile terminal is registered here. A first wireless zone group, which is a wireless zone group in which the incoming call mobile terminal is highly likely to exist, and a wireless zone in which the incoming call mobile terminal is unlikely to exist, are all wireless zones in the location registration area. When the incoming call is generated, first, the first call is made in the first wireless zone group in which the incoming mobile terminal is likely to exist, In response to the first call, if there is no response from the called mobile terminal, then a second call is made in the second wireless zone group in which the called mobile terminal is unlikely to exist.

Here, it is also possible to divide the wireless zone in the location registration area into groups of three or more and make calls three or more times. By implementing such a calling operation, if there is a large tolerance for call connection delay,
By controlling the call connection delay so that the call connection delay is positively generated by dividing the call into small portions, the call traffic can be reduced in each radio base station. In particular, by setting the wireless zone that existed at the time of the latest call termination of the incoming call target mobile terminal or a nearby wireless zone including it as the first call target zone, it is possible to catch the incoming call target mobile terminal. The probability of being able to do so becomes high, and the possibility of being able to make a call connection to the incoming call target mobile terminal in a short time while minimizing the occurrence of call loss. In addition, if the mobile terminal of the incoming call target cannot be caught in the first call target zone, the number of calls will increase due to the control such that the call is tried again in the second call target zone. This increases the possibility that a large call connection delay will occur, but on the other hand, it becomes possible to further reduce the call traffic at each radio base station.

As described above, the concept is that the incoming mobile terminal is divided into the first wireless zone group having a high possibility of existing and the second wireless zone having a low possibility, and when the incoming call occurs, the incoming call is first received. The first wireless zone group in which the call mobile terminal is highly likely to exist The first call is made, and if there is no response from the called mobile terminal to the first call, then the called mobile terminal This is to make an effective call by making a second call in the second wireless zone group which is unlikely to exist.

Another call control example will be described. Here, the first and second wireless zones are not divided according to the possibility of the presence of an incoming mobile terminal, but the first and second wireless zones are uniquely divided. However, the first wireless zone is a terminal existing wireless zone at the latest ending time of the called mobile terminal, and the second wireless zone is another wireless zone.

The first call is made only to the first wireless zone, and if not, it is made to the second wireless zone. That is, as an operation example when a call with a large tolerance for call connection delay and a long permissible call connection delay time arrives at the incoming call target mobile terminal, here, the incoming call target mobile terminal is located. The first call is made only in the wireless zone that existed at the time of ending the immediately preceding call in the registered location registration area, and if there is no response from the called mobile terminal to the first call, the In the wireless zones included in the location registration area, the second call is made in a plurality of wireless zones that did not participate in the first call.

The first call may be made in a plurality of wireless zones in the vicinity of the wireless zone existing at the time of ending the immediately preceding call. The second call is made in a wireless zone near the wireless zone making the first call, and the first and second calls are made in the wireless zone included in the location registration area. You may make a third call in a wireless zone that is not.

Similarly, it is possible to make the call in four or more times. By these operations, when the tolerance regarding the call connection delay is large, it is possible to reduce the call traffic by causing the call connection delay. Further, by increasing the number of calls, there is a high possibility that a large call connection delay will occur, but on the other hand, it is possible to further reduce the call traffic.

Another example will be described. Here, even if there is an incoming call at the incoming call target mobile terminal, if the incoming call is a call that has a long allowable call connection delay time, the incoming call is not immediately issued, but Eliminate useless call traffic by confirming that the wireless zone in which the mobile terminal of the incoming call exists is confirmed by the incoming call of the mobile terminal of the incoming call or the incoming call with a small delay tolerance. This is effective when sending a message with a low degree of urgency.

Specifically, the following is done. The mobile terminal
When a call with a large tolerance for the call connection delay and a long permissible call connection delay time is received, the mobile communication control device 100 causes the called mobile terminal to call the called mobile terminal. The first call is made in the radio zone in which the called mobile terminal exists immediately after the termination of any of the above-mentioned calls until the termination or the termination of a call with a short allowable call connection delay time. Do.

If there is no response from the called mobile terminal to the first call, the first call is made in the wireless zone included in the position registration area in which the called mobile terminal is registered. Make a second call in multiple wireless zones that are not making calls. Here, the calling may be performed three times or more.

By the above operation, the call connection delay becomes considerably large from the viewpoint of the calling side, but it is effective in reducing traffic in the case of communication with extremely low urgency. And, in many cases, since the call connection can be made by the first call,
By making a call only to the wireless zone in which the other party is located after surely grasping the other party's whereabouts, each base station contributes to a significant reduction in the call traffic.

Although various operation examples have been described above, in each of the above examples, a connection time limit is set in advance in response to the tolerance regarding call connection delay, and the wireless zone in which the mobile terminal exists before the time limit is reached. When it is possible to specify, the call is made by the above-mentioned procedure, and when the time limit is exceeded, it is natural that the call is terminated as a call loss. This makes it possible to significantly reduce the call traffic at each radio base station without continuing the call forever and improving the delay rate to some extent.

On the other hand, by repeating the first call having a high priority and the second call having a low priority in correspondence with the order of the calls, the delay is lengthened.
Therefore, when the above time limit is reached, it is possible to make a call immediately in all the wireless zones in the location registration area.

By this method, the upper limit of the call connection delay can be clearly defined. For the connection time limit, for example, there is a method of predetermining an optimum value corresponding to the call type. This is realized by configuring the mobile communication control device as shown in FIG.

Explaining the configuration of FIG. 3, 100a is a mobile communication control device, 101 is a call selecting means, 103 is a storage unit, 104 is a timer, and the storage unit 103 stores the time limit value corresponding to the call type. ing. Also, timer 1
Reference numeral 04 is a timer for measuring the ringing time for each incoming call, which is a group configuration having a plurality of timers,
It is a configuration that can manage the calling time for each call.

The call selecting means 101 is a calling means P
Of the MA1 to PMAk, the calling means of the call control content corresponding to the delay tolerance for each incoming call is selected to perform the call control, and the time limit value corresponding to the call type is obtained from the call type information. Then, the timer 104 instructs the timer 104 to perform timed management by the timed value, and the timer 104 manages the ringing time for the incoming call by this command, and when the time is out (timed value exceeds), the call selection means. The information is output to 101 corresponding to the call, and the call selecting means 101 is configured to perform management control so as to switch the calling means to the selection of the calling means PMA1 corresponding to the call and switch to control to call all the base stations at once. .

Mobile communication control apparatus 100 having such a configuration
When a call is accepted from the terminal, a is equipped with a storage unit 103 that stores a connection delay timetable in which a time value corresponding to each call type is recorded and a timer 104 that manages the call time for each call. When the call type is determined, a timer is set for that call, and if there is no response from the call receiving target terminal even after the time corresponding to the time limit value is reached, the location registration area where the call receiving target terminal is registered By making a call from all the wireless base stations to which the user belongs, it is possible to easily notify the call receiving target terminal of the call.

As for the connection time limit, for example, there is a method of requesting the connection time limit from the terminal when accepting a call. In this case, between the mobile communication control device 100a and the terminal, a request for a time limit for this connection and a response thereto are sent via the first wireless base station or the second wireless base station and the mobile communication wired line 102. However, there is an advantage that the connection time limit can be flexibly set for each call.

Further, an operation example in the case of receiving a call having a high delay tolerance as described above, that is, a mobile terminal receives a call with a high tolerance for the call connection delay and a long allowable call connection delay time. As an operation example in the case where the call registration is performed, the mobile communication control device 100 makes a first call of the call reception mobile terminal immediately after the call reception mobile terminal performs the position registration, or the wireless zone in which the position registration is performed, or A configuration may be adopted in which a plurality of wireless zones near the wireless zone are used.

As a result, the call connection delay increases, but on the other hand, the call traffic can be significantly reduced. Also in this case, when the connection time limit as described above is determined, and the location is registered before the time limit is reached and the wireless zone in which the mobile terminal exists can be specified, the call is performed by the procedure described above, When the time limit is reached, it is possible to make a call immediately in all wireless zones in the location registration area.

The above is an example of the case where the calling terminal and the called terminal are connected and the two are directly communicated with each other. However, the communication is performed from the calling side without directly connecting the calling and calling terminals for communication. In some communications, the information sent may be delivered to the called party. An example suitable for such communication will be described below.

That is, the connection delay is large, and
Communication that does not require a line for direct communication between the terminal on the calling side and the mobile terminal on the called side, such as mail or message, temporarily stores transmission information somewhere. An embodiment in the case of performing message communication or the like in which this should be delivered will be described with reference to FIG.

In the figure, 100 is a mobile communication control device,
102 is a mobile communication wired line; 105 is a call control device;
6 is a terminal, 107 is a message storage device, BSm-1, B
Sm and BSm + 1 are radio base stations, and MSn is a mobile terminal. The components newly appearing in this system configuration are a call control device 105, a terminal 106, and a message storage device 107.
Is.

The terminal 106 is a terminal capable of data communication such as a personal computer capable of creating a message to be transmitted and sending it together with the information of the callee. It is a large-capacity readable / writable storage device that individually stores sent messages and the like together with callee information.

When a call connection request is made to the mobile terminal, the call control device 105 collects and holds information about which location registration area the mobile terminal is in by registering the location registration information for each location registration area. A device for receiving a call from a location information storage device (not shown) and instructing the mobile communication control device 100 to call a mobile terminal and connect a line, thereby performing call control such as a call initiated by the mobile communication control device 100. Back up so that you can.

Further, the call control device 105 generates a call from the delivery information of the message storage device 107 for delivery of the message from the message storage device 107, passes the call to the mobile communication control device 100, and sends it to the mobile communication control device 100. It also has a function of controlling to call the called party.

When the call control device 105 receives a request to send a message or the like from the terminal 106 such as a personal computer,
The terminal 106 is connected to the message storage device 107 and is controlled to store the message, and a message for storing the message stored in the message storage device 107 according to the callee information is generated to store the stored message. When delivering traffic, the traffic is monitored, and when the traffic is not high, a call is generated according to the callee information and is passed to the mobile communication control device 100, and the mobile communication control device 100 calls the callee. The control is performed so that

In such a configuration, first, the call control device 105 which has received a call request from the calling terminal 106.
When the call identifies a call requesting message communication, the terminal instructs the terminal to transfer the message data to the message storage device 107 connected to the mobile communication wired line 102. The message data transmitted by the terminal is stored in the message storage device 107, and then the call control device 105 instructs the mobile communication control device 100 to call the called mobile terminal.

The mobile communication control device 100 calls the mobile terminal of the called side by any of the procedures for the call with the large tolerance of the connection delay described above. When a response from the mobile terminal on the called side is returned to the mobile communication control apparatus 100, the mobile communication control apparatus 100 transmits between the message storage apparatus 107 and the mobile terminal on the called side via the radio base station which received the response. It is also possible to request the line connection of the call control device 105 and transfer the message data to the mobile terminal using the set line.

By this method, it becomes possible to deliver a message to a desired mobile terminal even if the calling terminal and the called mobile terminal do not access the mobile communication system at the same time. , The traffic can be averaged, and the averaging of the wireless line utilization can be promoted.

As described above, according to the first embodiment, depending on the tolerance of the delay of the call connection, the calls can be made from all the radio base stations all at once, or can be made sequentially in units of some radio base stations. Call control, such as when the call connection is delayed, and the one that has a high tolerance for delay in call connection is one that reduces traffic of each radio base station by positively controlling the delay. It was

However, if the call connection delay tolerance is small, calls are made simultaneously from each radio base station, and if a large number of calls with a small tolerance occur, the traffic reduction effect is weak. Become. Therefore, one step further will be described below as a second example in which a traffic reduction effect can be expected even when a large number of calls with a low tolerance are generated.

(Second Embodiment) A second embodiment of the present invention will be described. FIG. 5 is a block diagram showing the configuration of the mobile communication system according to the second embodiment of the present invention. As shown in FIG. 5, the mobile communication system of the present embodiment has a plurality of mobile terminals MS1 to MSm and a plurality of radio zones CL1 to MS1 that receive communication services from the mobile communication system.
CLn, a plurality of radio base stations BS1 to BSn forming the plurality of radio zones CL1 to CLn, location registration areas LRA1 to LRAx configured to include the plurality of radio zones CL1 to CLn, and the mobile communication At least one or more mobile communication control devices 111 for controlling the system;
Each wireless base station BS1 to BSn and mobile communication control device 111
And a mobile communication wired line 112 that connects the and.

The mobile communication control unit 111 is for controlling the call connection between the call originator and the callee when a call is generated. When the call is generated, the mobile communication controller 111 calls the mobile terminal of the callee. The control for performing local control is performed for each local wireless zone in which the mobile terminal exists (registration of the location in each wireless zone in which the mobile terminal exists) and the result thereof. It has a function of holding the local location registration information.

The control for location registration in units of location registration areas in which the mobile terminal exists and the function of holding location registration information obtained as a result thereof are provided in the existing mobile communication system. Since this is performed by the position information storage device that has the information registration control function, the mobile communication control device 111 refers to the information of that function as necessary.

Further, the mobile communication control unit 111 uses the calling means P used when the tolerance regarding the call connection delay is small.
M1 and calling means PM2 used when the tolerance regarding the call connection delay is large, and these have almost the same functions as those used in the first embodiment, although some functions are different as will be described later. It has a similar calling procedure control function. That is, the calling means PM1 may be one having a basic function of "level 1", and the calling means PM2 may have the same basic function as that of the "level 2" employed in the first embodiment. Alternatively, any of "level 3" or higher and "level k-1" or "level k" used in the first embodiment may be used. Of course, it is also possible to provide not only two types of calling means but all k types, as adopted in the first embodiment, so that one of these can be selected.

Further, the mobile communication control device 111 uses the calling means PM1 and PM2 depending on the tolerance regarding the call connection delay.
Select the most suitable one of them (if there are three or more calling means, select the most suitable one of them)
Calling procedure selection means 115 and base station storage means 113
And a base station storage reason storage means 114.

Of these, the base station storage means 113 is
Each mobile terminal has two local location registration areas, and the first local location registration area has a radio zone in which each mobile terminal existed at the time of the call termination (hereinafter, this is referred to as a call termination time wireless zone). The information of the wireless base station serving the call is stored as the terminal existing zone position registration information for each mobile station, and the second local position registration area stores the wireless zone at the time of termination after the mobile terminal makes its own call. Has a function of storing, as terminal-existing-zone position registration information, information of a wireless base station that services the wireless zone after the movement when the mobile station moves to another wireless zone. When the information is stored in the second local location registration area, the previous terminal existing zone location registration information stored in the first local location registration area is erased.

Further, the base station storage reason storage means 114 is
This is for storing the reason for storing the terminal existing zone position registration information in the base station storage means 113. Here, the reason is that the terminal existence zone location registration information of each mobile terminal stored in the base station storage means 113 is a wireless zone that existed at the time of the end of the call of the mobile terminal. There is a case where it is the zone position registration information and a case where it is the terminal existing zone position registration information corresponding to the wireless zone of a new moving destination after moving, which is the reason for knowing which one. Therefore, the reason may be simply flag information.

Holding the reason in this way means that the mobile terminal has not moved to the zone if the terminal existing zone position registration information is for the final call. In this case,
The probability that there is a called mobile terminal in the wireless zone indicated by the terminal existing zone location registration information is very high, so if call control is performed via a wireless base station that serves that wireless zone, This is because there is a high possibility that a call connection can be made in the shortest time.On the other hand, if the current terminal existing zone location registration information is updated and held because the mobile terminal has moved to a zone, that mobile terminal is moving. Since there is a large possibility that the current terminal existing zone location registration information may not be caught even if the call control is performed only through the wireless base station that services the wireless zone indicated by the current terminal existing zone location registration information. Wireless at the same time by using all the wireless base stations in the location registration area including the wireless zone indicated by the location registration information in the terminal existing zone, or by part of the location registration area Sequentially utilizing Chikyoku is to control to perform a call.

In this system, each mobile terminal MS1 ...
The MSm is provided with a function of wirelessly notifying the mobile communication control unit 111 when it moves to another wireless zone. This is because the mobile terminal is equipped with a standard function of monitoring the electric field strength, and the frequency band used in the neighboring wireless zones is different, so the electric field strength of the frequency in the current wireless zone becomes low and Since the movement of the wireless zone can be detected because the electric field strength of the frequency in the wireless zone has increased, the detection information is used to detect the presence of the terminal from the mobile terminal side when the wireless zone is moved. Perform the procedure for zone location registration. When the procedure for registering the location zone of the terminal is carried out from the mobile terminal side, the radio base station which has received this transmits information for registering the location zone of the terminal of the mobile terminal to the mobile communication control device 11
1 is notified to the mobile communication control device 111.
Then, the wireless zone of the moving destination is grasped by being entangled with the information of the wireless base station, the terminal existing zone position registration information is re-registered in the base station storage means 113, and the reason is registered in the base station storage reason storage means 114. You can

That is, when the mobile terminal in the terminal existing zone performs location registration, the mobile communication control device 111 recognizes through which radio base station this information is received, and responds to the mobile terminal notified of the information. In addition, the base station storage means 11
3 stores the information of the wireless base station in the second local location registration area as the terminal existing zone location registration information, and deletes the information of the first local location registration area. . Each mobile terminal MS1
~ MSm must be a unique ID when communicating with a base station
In order to transmit the
11 can be specified.

Calling means PM1, PM of the second embodiment
Among the functions of the second embodiment, the points different from those of the first embodiment will be described below. Base station storage reason storage means 11
4 and the information in the base station storage means 113 can be used,
Change the procedure depending on the reason.

For example, if the reason for holding in the base station storage reason storage means 114 is the terminal existing zone position registration at the time of the call termination, only the base station that serves the wireless zone indicated by the terminal existing zone position registration information is used. Then, the first calling control is performed, and when there is no response, the calling means PM1 and PM2 are configured so that the calling control according to the first embodiment is performed.

Therefore, the calling means PM1, PM2 refer to the holding reason of the base station storage reason storing means 114 to know the terminal existing zone position from the information of the base station storing means 113. Conventionally, in mobile communication systems, mobile terminal calling is controlled by simultaneous operation of wireless base stations in location registration area units, and although the priority order of use is low, this system naturally inherits this function. Therefore, in the "level 1" calling means, the position registration is performed when the reason for holding the base station storage reason storage means 114 is zone movement and when there is no response to the first call control when there is no wireless zone movement. Control of mobile terminal calling is performed by wireless base station simultaneous operation in area units.

In the calling means other than "level 1", if the reason for holding the base station storage reason storage means 114 is that there is no zone movement, only the wireless base station corresponding to the terminal existing zone position registration information at the time of the first call termination is used. Call from
When there is no response, the call control according to the procedure of the first embodiment is performed. Further, when the reason for holding the base station storage reason storage means 114 is the zone movement, the call control according to the procedure of the first embodiment is performed.

FIG. 6 is a flow chart showing an operation example of the mobile communication device when a mobile terminal receives a call in the mobile communication system according to the second embodiment of the present invention. Next, the operation of the mobile communication system configured as above will be described with reference to FIG.

When each mobile terminal makes a call in a radio zone included in the location registration area in which the location is registered, the base station storage means 113 registers the radio base station information forming the radio zone in the location zone of the terminal. The information is stored as information, and the base station storage reason storage means 114 stores that the reason for storing the wireless base station in the base station storage means 113 is that the call is terminated.

When the mobile terminal moves and moves from the wireless zone that existed at the time of call termination, the mobile terminal reports to the movement-destination wireless zone that it has moved from the wireless zone that existed at the time of call termination, and the base station The storage unit 113 stores the wireless base station information forming the destination wireless zone as the terminal existing zone position registration information, and the base station storage unit 113 stores the wireless base station because of the movement after the call. Remember that.

Here, when the location of the mobile terminal is registered,
In the base station storage means 113, the radio base station of the mobile terminal is reset, and nothing is stored. Further, when the mobile terminal registers the location, the base station storage means 113 stores the radio base station whose location has been registered by the mobile terminal, and the base station storage reason storage means 114 stores the base station storage reason as the location registration. You may remember that.

[Selection of Calling Means] Next, when the mobile terminal receives an incoming call, the calling means for calling the mobile terminal is selected based on the tolerance of the call connection delay that may occur during the call connection. The operation will be described.

When a call is made, the terminal on the caller side that wants to communicate with the mobile terminal notifies the mobile communication control unit 111 of the tolerance regarding the call connection delay of the communication. Based on this notification, the mobile communication control device 111 determines the tolerance regarding the call connection delay (S11 in FIG. 6).

As a result, when the tolerance regarding the call connection delay is small and the permissible call connection delay time is short, the calling procedure selecting means 115 selects the calling means PM1 to call the mobile terminal. Then, the calling means PM1 performs the determination of step S12 of FIG. 6, and performs the processing of step S19 of FIG. 6 or the determination of step S13 according to the result.

That is, the calling means PM1 accesses the base station storage means 113 and the base station storage reason storage means 114, and when the radio base station is not stored for the mobile terminal or when the radio base station is stored. However, if the reason for storing the base station is not the end call, the mobile terminal makes a call in all wireless zones included in the location registration area in which the location of the mobile terminal is registered (S19).

When the wireless base station is stored and the base station storage reason is call termination, the mobile terminal is called through the stored wireless base station (S13 and S1 in FIG. 6).
4). Then, if there is a response from the mobile terminal of the incoming call,
The calling terminal and the called mobile terminal are connected by call to enable communication (S15 and S16 in FIG. 6), and if there is no response from the called mobile terminal, it is treated as a call loss (see FIG. 6). S1
5, S17), the call is stopped and the calling terminal is notified that the connection cannot be established.

As a result of the processing in S14, if there is no response from the incoming call target mobile terminal within the time limit, the process proceeds to S19 (broadcast in the location registration area), and the incoming call target mobile terminal If there is a response, the call-out terminal and the mobile terminal of the call-in target are call-connected to enable communication (S1 in FIG. 6).
5, S16), if there is no response from the incoming call target mobile terminal within the time limit, it is treated as a call loss (S15, S1 in FIG. 6).
7) It is also possible to adopt a control mode in which the calling is stopped and a notification that the connection cannot be made is given to the calling terminal.

By these operations, when the tolerance for the call connection delay is small, the call can be efficiently made, and the call traffic can be reduced without causing the call connection delay and the incoming call can be received. A call can be connected to the mobile terminal.

On the other hand, when the mobile terminal receives a call with a high tolerance regarding the call connection delay and a long allowable call connection delay time, the calling procedure selecting means 115 calls the calling means for calling the mobile terminal. Select PM2.

In this case, the calling means PM2 carries out the processing from step S18 onward in FIG. That is, the calling means PM2 accesses the base station storage means 113 and the base station storage reason storage means 114, and if the wireless base station is not stored for the mobile terminal, the location of the mobile terminal is registered. Calls are made in all wireless zones included in the location registration area (S18 and S19 in FIG. 6).
Then, the steps S15, S16 and S17 are performed.

If the wireless base station is stored, but the reason for storing the base station is not termination, the first call of the mobile terminal is performed via the stored wireless base station (FIG. 6). S18, S20, S22).

Here, the first call of the mobile terminal may be performed via a plurality of radio base stations near the radio base station including the stored radio base station. If there is a response from the mobile terminal to the first call (S2 in FIG. 6).
3), the calling terminal and the responding incoming mobile terminal are connected by call to enable communication between them (S1 in FIG. 6).
6). When there is no response from the mobile terminal to the first call, the second call is made in all the wireless zones that do not make the first call and are included in the location registration area where the mobile terminal is registered. Is called (S in FIG. 6)
23, S24). Here, the calling may be performed three times or more.

Then, the steps S15, S16 and S17 are performed. On the other hand, when the wireless base station is stored and the reason for storing the base station is end call, the mobile terminal is called through the stored wireless base station (S20, S2 in FIG. 6).
1). Then, the steps S15, S16 and S17 are performed.

Although these operations cause some delay in call connection, on the other hand, call traffic can be significantly reduced, and call connection to the called mobile terminal becomes possible.
Further, the greater the incoming call rate, the greater the effect of reducing the call traffic, so the effect will be particularly remarkable in the future mobile communication system in which the incoming call rate is considered to increase. Further, as the stationary time of the mobile terminal becomes longer, call traffic decreases, which is particularly effective in a place where such a situation may occur.

[Location Registration and Connection Control] Next, location registration and connection control in the system of the second embodiment will be described with reference to FIG. The mobile communication system according to the second embodiment of the present invention shown in FIG. 7 manages a plurality of mobile communication control devices 111 for each location registration area for managing location information of mobile terminals existing in each location registration area.
Then, using the position information storage device 120 that manages the position information of each mobile terminal, connection control to the mobile terminal at the time of an incoming call is performed.

The location information storage device 120 stores location registration information for each mobile terminal in location registration area units in which each mobile terminal exists, which is obtained by the location information registration control function originally provided in the existing mobile communication system. To do.

The call control device 105 stores information about which location registration area the mobile terminal is in when there is a call connection request to the mobile terminal, and the location information storage device 120 which stores the location registration information in units of the location registration area. The mobile communication control device 111 receives the call from the mobile terminal and connects the line.
The mobile communication control device 111 is backed up so as to be able to perform call control such as calling under the initiative of the mobile communication control device 111.

In such a configuration, when there is a call connection request to the mobile terminal, the call control device 105 obtains from the position information storage device 120 information on which position registration area the mobile terminal is in.

Then, the call control device 105 instructs the mobile communication control device 111, which manages the location registration area, to call the mobile terminal and connect the line. The mobile communication control unit 111 calls the mobile terminal by any of the procedures described above, and upon receiving a response from the mobile terminal, connects the line via the radio base station.

The procedure for recording in which location registration area the mobile terminal is located in the location information storage device 120 is similar to the location registration method used in a conventional mobile phone or the like. That is, when the power of the mobile terminal is turned on, when the wireless zone is changed, or when the mobile terminal periodically receives a notification signal for position confirmation transmitted from the wireless base station and responds to this. It recognizes which location registration area it is from the received information of the receiving wireless base station by transmitting its own information.

When the mobile terminal moves to a different location registration area, the location information storage device 120 is requested to perform location registration from the wireless zone of the destination location registration area. As a result, the location information storage device 120 performs location registration of the mobile terminal based on the information of the receiving radio base station. Further, at this time, the mobile communication control device 111 stores the information in the second local position registration area in the base station storage means 113 of the mobile communication control device 111 based on the information of the reception radio base station, and the base station storage reason storage means 11
The reason why the terminal existing zone position registration information is stored in the base station storage means 113 is stored in 4.

There are several methods for storing in which radio zone the mobile terminal is located in the base station storage means 113 provided in the mobile communication control device 111, depending on the state of the mobile terminal.

First, since information is transmitted from the mobile terminal when the location is registered, when the mobile terminal makes a call, or during communication, the passing radio base station can be stored in the base station storage means 113. Even when the mobile terminal is not in these states, the mobile terminal can periodically receive the notification signal from the radio base station and recognize which base station is in the radio zone, so that the different radio zones When it is detected that the mobile communication device has moved to, the mobile communication control device 111 is sent a request to change the wireless zone.

In this method, when the mobile terminal frequently moves between the wireless zones, the control traffic related to the request for changing the wireless zone increases. In order to prevent this, for example, a mobile terminal that has performed location registration or a mobile terminal that has made a request to change the wireless zone periodically receives an annunciation signal from a wireless base station, and the wireless communication is performed again within a predetermined time. When the zone is changed, information notifying that the user has moved in the destination wireless zone is transmitted, and the wireless zone change request is not transmitted for a certain period of time thereafter. And if the state where the wireless zone has not changed for a certain period of time continues,
The mobile communication control device 111 is again requested to change the wireless zone.
Send to.

By using such a position registration method,
It is possible to significantly reduce the call traffic without significantly changing the system used in a conventional mobile phone or the like and without increasing the traffic for location registration so much. It should be noted that the present invention is not limited to the above-described embodiments, but can be implemented with various modifications.

[0133]

As described above, the mobile communication system of the present invention makes it possible to make a call depending on the type of communication. For example, it is possible to reduce call traffic while satisfying a user's request for call connection delay. From the above, in a mobile communication system that provides multimedia communication services, there are great effects in terms of both control efficiency and service quality assurance. Then, it becomes possible to accommodate a larger number of mobile objects in the mobile communication system, and it is possible to provide a communication service according to a user's request.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an embodiment of the present invention and is a block diagram showing a configuration of a mobile communication system according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining an embodiment of the present invention and is a flow chart for explaining an operation example of the mobile communication system according to the first embodiment of the present invention.

FIG. 3 is a diagram for explaining the embodiment of the present invention and is a block diagram showing another configuration example of the mobile communication control device of the present invention.

FIG. 4 is a diagram for explaining the embodiment of the present invention and is a system configuration diagram showing another configuration example of the present invention.

FIG. 5 is a diagram for explaining the embodiment of the present invention and is a block diagram showing the configuration of a mobile communication system according to the second embodiment of the present invention. of

[Fig. 6] Fig. 6 is a diagram for explaining the embodiment of the present invention and is a flowchart for explaining an operation example of the mobile communication system according to the second embodiment of the present invention.

FIG. 7 is a diagram for explaining the embodiment of the present invention and is a diagram for explaining the location registration function of the mobile communication system according to the second embodiment of the present invention.

8 is a diagram for explaining the embodiment of the present invention and is a partially enlarged view of FIG. 7. FIG.

FIG. 9 is a block diagram showing a configuration of a conventional mobile communication system.

[Explanation of symbols]

 100, 100a, 111 ... Mobile communication control device 102, 115 ... Calling procedure selection means BS1 to BSn ... Radio base stations CL1 to CLn ... Radio zone LRA1 to CLx ... Location registration area 113 ... Base station storage means 114 ... Base station storage reason Storage means PMA1 to PMAk, PM1, PM2 ... Calling means

Claims (4)

[Claims] 1. In a mobile communication system configured to provide a plurality of wireless zones for each location registration area and capable of providing a plurality of types of communication services to a mobile terminal, a call connection delay for a call to the mobile terminal. When the call connection delay is not allowed from the information of the allowance, the call is simultaneously sent to the mobile terminals to which the call is received in all wireless zones of the location registration area, and the call is called. When connection delay is allowed, a call connection control method for a mobile communication system, characterized in that the mobile terminals to which the call is to be received are sequentially called in units of a part of wireless zones in the location registration area. . 2. A mobile communication system configured to provide a plurality of wireless zones for each location registration area and capable of providing a plurality of types of communication services to a mobile terminal, and calling when a call is made to the mobile terminal. In addition to defining the allowable time limit value for the call type, a timer function is provided to monitor the call time, and for calls to mobile terminals,
Information on the delay tolerance of call connection is added, and if the delay of call connection is not permitted from this tolerance information, the mobile terminals to which the call is to be received are simultaneously called in all wireless zones in the location registration area. If a call connection delay is allowed, the mobile terminals to which the call is to be received are sequentially called in units of some wireless zones in the location registration area, and each call corresponds to a call type. A call connection control method for a mobile communication system, wherein the call is simultaneously called in all wireless zones of a location registration area with the upper limit of the allowable time limit of. 3. In a mobile communication system configured to provide a plurality of wireless zones for each location registration area and capable of providing a plurality of types of communication services to a mobile terminal, the location of each mobile terminal is determined by the location of the mobile terminal. When the call to the mobile terminal occurs, it is retained as the location information of the existing zone at the end of the call corresponding to the wireless zone used at the time of the end of the call. Then, when the first call is made in the wireless zone that corresponds to the location information of the existing zone at the time of call termination, and there is no response from the mobile terminal that is the call-in target, then another location registration area of the location registration of the mobile terminal is performed. A call connection control method for a mobile communication system, which is characterized by performing simultaneous call in all wireless zones. 4. In a mobile communication system configured to provide a plurality of wireless zones for each location registration area and capable of providing a plurality of types of communication services to a mobile terminal, the location of each mobile terminal is determined by the location of the mobile terminal. The location information of the existing zone at the time of call termination is retained for the wireless zone used at the time of call termination, and the call connection delay tolerance information is added to the call to the mobile terminal. When not permitted, the call is made in the wireless zone corresponding to the call termination existing zone position information based on the call termination existing zone position information of the incoming call target mobile terminal for the call, and the call is delayed in call connection. When allowed, the wireless zone corresponding to the end-of-call existing zone position information or this wireless zone is based on the end-of-call existing zone position information of the mobile terminal of the incoming call for the call. When the first call is made in a part of the wireless zone in the location registration area including the mobile station and there is no response from the mobile terminal that is the callee, the next A call connection control method for a mobile communication system, wherein calls are sequentially made to mobile terminals to which the call is to be received in units of some wireless zones.