JPH09200833A - Line assignment equipment for mobile communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make smoother line connection with respect to the line assignment equipment of the mobile communication system in which position registration is made via a speech line. SOLUTION: A monitor storage means 1a of a base station 1 stores a current operating state of all speech lines assigned to the base station 1. When the base station 1 receives a communication request from a mobile communication terminal equipment 2, an idle line retrieval means 1b of the base station 1 references operation state data stored in the monitor storage means 1a to retrieve an idle speech line. When no idle speech line 1 is found out, a position registration line retrieval means 1c of the base station 1 references the operation state data to retrieve a speech line used for position registration processing. When the speech line for the position registration processing is found out, an idle line re-retrieval means 1d of the base station 1 awaits lapse of a prescribed time and references the operating status data to retrieve an idle speech line again. When the idle speech line is found out, a speech line assignment means conducts assignment processing of the speech line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line allocating device for a mobile communication system, and more particularly to a line allocating device for a mobile communication system that performs location registration processing via a communication line.

In recent years, in the mobile communication system, the traffic has been increasing with the increase in the number of subscribers. In such a mobile communication system, users are demanding the performance equal to or higher than the wired communication. In order to meet such demands, it is necessary to make the circuit allocation connection smoother.

[0003]

2. Description of the Related Art Conventionally, for example, the device disclosed in Japanese Patent Laid-Open No. 6-315179 is known as a line allocation device for a mobile communication system. According to this, in the situation where all the call lines assigned to the base station are all used,
It is assumed that a mobile communication terminal existing in a communication area controlled by the base station makes a call. At this time, the base station notifies the mobile communication terminal that there is no available line, and the identification number of the mobile communication terminal that made the call is stored in the base station. If there is a line that can be called after that,
The base station secures the line and notifies the mobile communication terminal of that. When the user presses the recalling button on the mobile communication terminal, the call line is established.

[0004]

In the above-mentioned conventional apparatus,
When all the lines are in use, the base station informs the mobile communication terminal that there is no available line, and the mobile communication terminal waits by turning off the hook switch.

However, even if all the lines are in use, there is a possibility that some of them will be used in a short time. That is, in the mobile communication system, the position where the mobile communication terminal is present is reported to the base station when the power is turned on or when moving to another wireless area (when moving to another paging wireless area in PHS), The base station registers this in the mobile exchange and uses it to call the mobile communication terminal. This location registration process is performed using a telephone line, and is performed for a certain short time (for example, 80 at the longest).
0 ms). When the lines are used by such location registration processing, even if all the lines are in use by chance, it is highly possible that the lines will be available soon. That is, in the case of the location registration processing, it is expected that the line can be easily connected by waiting for a short predetermined time.

The present invention has been made with a focus on such location registration processing, and an object thereof is to provide a line allocation device for a mobile communication system which enables smoother line connection.

[0007]

In order to achieve the above object, the present invention monitors the usage status of all the call lines allocated to the base station 1 and stores the use status of all the call lines for each line. The monitoring storage means 1a for monitoring and the monitoring storage means 1 when the base station 1 receives a communication request from the mobile communication terminal 2.
A vacant line searching means 1b for locating a vacant communication line by referring to the usage status data stored in a, and a vacant line searching means 1
Monitoring storage means 1 when b cannot find an empty call line
When the location registration line searching means 1c searches for a speech communication line used for location registration processing by referring to the usage data stored in a and the location registration line searching means 1c finds a speech communication line for location registration processing, Waiting for the elapse of a predetermined time, referring to the usage data stored in the monitoring storage unit 1a, the empty line re-search unit 1d is searched again for an empty communication line.
And a communication line allocating unit 1e for allocating a communication line when the empty line re-searching unit 1d finds an empty communication line, a line allocation device for a mobile communication system is provided. .

In the above configuration, the base station 1 is assigned with a plurality of communication lines in advance, and can be connected to the mobile communication terminal 2 via these communication lines. The monitoring storage unit 1a of the base station 1 monitors the usage statuses of all the communication lines assigned to the base station 1 and stores the current usage statuses of each of them. As the usage status, for example,
There is a vacancy, it is being used for location registration, etc.

When the base station 1 receives a communication request from the mobile communication terminal 2, the idle channel searching means 1b of the base station 1 refers to the usage status data stored in the monitoring storage means 1a to make a free call. Find a line. As a result, the empty line searching means 1
When b cannot find a vacant call line, the position registration line search means 1c of the base station 1 refers to the usage status data stored in the monitoring storage means 1a to find the call line used for the position registration process. look for. When the location registration line searching means 1c finds a communication line for location registration processing, the base station 1
The idle line re-search means 1d waits for a predetermined period of time, and refers again to the usage status data stored in the monitoring storage means 1a to search for a free communication line again. This predetermined time is set to the maximum required time from the time when the position registration process is started to the time when the position registration process ends and the telephone line used for position registration becomes idle. Therefore, when this predetermined time elapses, the telephone line used for the location registration process should be idle.

When the empty line re-searching means 1d finds an empty calling line, the calling line allocating means 1e performs a calling line allocation process. As described above, when there is no space in the communication line due to the location registration processing, the line connection can be established by waiting for a short predetermined time. In the device of the present invention, human operation at the mobile communication terminal is reduced, and the amount of traffic between the mobile communication terminal and the base station is reduced. In addition,
The mobile communication terminal is required to stand by for a predetermined time in a communication state, but since it is a short time, battery consumption does not become a problem. Thus, a smoother line connection can be achieved.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. First, the principle configuration of the first embodiment will be described with reference to FIG. In the first embodiment,
A monitoring storage unit 1a that monitors the usage status of all the call lines allocated to the base station 1 and stores the usage status of all the call lines for each line, and the base station 1 receives a communication request from the mobile communication terminal 2. In the event of a failure, the empty line searching means 1b for searching for an empty call line by referring to the usage data stored in the monitoring storage means 1a, and the monitoring storage when the empty line search means 1b cannot find an empty call line When the location registration line searching means 1c searches for a communication line used for location registration processing by referring to the usage status data stored in the means 1a and when the location registration line searching means 1c finds a communication line for location registration processing. , Waits for the lapse of a predetermined time, and then monitors and stores 1a
When the empty line re-searching means 1d finds an empty call line, it performs a call line allocation process by referring again to the usage data stored in 1. The communication line allocating means 1e is provided.

The detailed structure of the first embodiment will be described with reference to FIGS. The correspondence between the principle configuration shown in FIG. 1 and the configurations shown in FIGS. 2 to 5 will be described after the description of the configuration based on FIGS. 2 to 5.

FIG. 2 is an overall configuration diagram of a mobile communication system to which the first embodiment is applied. In the figure, the public network 10
To the mobile exchange 11, and the mobile exchange 11 is connected to a plurality of radio base stations 12a to 12n. Wireless base station 1
2a to 12n configure radio areas 14a to 14n, respectively, and a mobile communication terminal located in a corresponding radio area among the mobile communication terminals 13a to 13m and a TDMA (Time Divi.
sion Multiple Access) -TDD (Time Division Duple
x) Sends and receives wireless signals according to the method. In this communication,
One of the four slots is used for transmitting and receiving control signals, and the remaining three slots are used for the mobile communication terminals 13a to 13a.
m and the radio base stations 12a to 12n, and is used for call connection.

The mobile communication terminals 13a to 13m report the position of their own station to the radio base station corresponding to the radio area in which they are located, and the radio base station reports this position to the mobile switching system 1
It is used to call a mobile communication terminal by registering it in 1. The location registration by the mobile communication terminal is automatically performed when the power of the mobile communication terminal is turned on or when the mobile communication terminal moves to another wireless area. And the location registration process is performed using the telephone line,
It ends in a certain short time (for example, 800 ms at the longest). For example, when the mobile communication terminal 13a is in the wireless area 14a
When the mobile communication terminal 13a moves from the wireless base station 12b to the wireless area 14b, the mobile communication terminal 13a performs a location registration process with respect to the wireless base station 12b. In addition, this mobile communication system is a PHS (Personal Ha
In the case of a (ndy phone System), location registration processing is performed when the mobile communication terminal moves to another paging area.

FIG. 3 is a block diagram showing the internal structure of the mobile communication terminal. On the reception side, the signal received by the antenna 16 is converted into voice through the transmission / reception changeover switch 17, the reception unit 18, the demodulation unit 19, the TDMA control unit 20, the codec 21, the voice interface 22, and the speaker 23 in order. On the transmitting side, the sound input from the microphone 24 is
The signal is transmitted as a transmission signal through the voice interface 22, the codec 21, the TDMA control unit 20, the modulation unit 25, the transmission unit 26, the transmission / reception changeover switch 17, and the antenna 16 in this order. A control unit 27 is connected to the voice interface 22, and a memory 28, an external terminal interface unit 29, and a man-machine interface unit 30 are connected to the control unit 27. An LCD display device 31, an LED display device 32, and a key input device 33 are connected to the man-machine interface unit 30. The control unit 27 executes a line allocation process described later according to a processing program stored in the ROM of the memory 28.

FIG. 4 is a block diagram showing the internal structure of the radio base station. On the reception side, the signal received by the antenna 35 is transmitted / received by the transmission / reception changeover switch 36, the reception unit 37, and the demodulation unit 3.
8, the TDMA control unit 39, and the line interface unit 40 in this order, and the data is sent to the mobile exchange 11. On the transmitting side, the signal from the mobile switching center 11 is transmitted to the line interface unit 4
0, the TDMA control unit 39, the modulation unit 41, the transmission unit 42, the transmission / reception changeover switch 36, and the antenna 35 in this order, and is transmitted as a transmission signal. A control unit 43 is connected to the TDMA control unit 39 and the line interface unit 40, and a memory 44 is connected to the control unit 43. The control unit 43 executes the line allocation process described later according to the processing program stored in the ROM of the memory 44. The RAM of the memory 44 stores the line usage status table shown in FIG. This table stores each usage status of the lines 1 to 4 at the present time, and the usage status is used for transmission of control signals when the line is idle (code “0”) ( There are five codes: code "1"), used for outgoing calls (code "2"), used for incoming calls (code "3"), and used for location registration (code "4"). It is designed to remember the situation.

Such a usage status is determined by the control unit 43 monitoring the telegram of the connection processing performed by the wireless base station as shown in FIGS. 7 to 9 and stored in the line usage status table.

FIG. 7 shows a sequence of call processing. In this sequence, in step S1, the control unit 43 of the wireless base station recognizes that the call line is being used for making a call, and the code "2" is added to the corresponding line position in the line use status table in the RAM of the memory 44. ”Is registered.

FIG. 8 shows a sequence of incoming call processing. In this sequence, in step S2, the control unit 43 of the wireless base station recognizes that the communication line is used for an incoming call, and the code "3" is added to the corresponding line position in the line use status table in the RAM of the memory 44. ”Is registered.

FIG. 9 shows a sequence of location registration processing.
In this sequence, in step S3, the control unit 43 of the radio base station recognizes that the call line is used for position registration, and the code "4" is added to the corresponding line position in the line use status table in the RAM of the memory 44. ”Is registered.

FIG. 5 is a block diagram showing the internal structure of the mobile exchange. A network (NW) 47 is connected to the wireless base station via a base station interface unit (CSLC) 46, a station line is connected to the network 47 via a station line interface unit (CBT) 48, and a relay line is also connected. A relay line is connected via an in-face portion (LDT) 49. Further, a CPU 50 is connected to the network 47, and the CPU 50 has a memory (MEM) 51, a hard disk controller (HDC) 52, a floppy disk controller (FDC) 53, and a data communication controller (DCC) 54.
Is connected. The data communication control unit 54 is connected to a maintenance console computer or the like.

The CPU 50 executes the line allocation process described later according to the processing program stored in the memory 51. Here, the base station 1 shown in FIG. 1 is the radio base station 1 shown in FIG.
2a to 12n, the mobile communication terminal 2 shown in FIG. 1 corresponds to the mobile communication terminals 13a to 13m shown in FIG. 2, and the monitoring storage means 1a shown in FIG. 1 corresponds to the control unit 43 and the memory 44 shown in FIG. Corresponding to the RAM, the empty line searching means 1 shown in FIG.
b, location registration line searching means 1c, free line re-searching means 1
d and the call line allocation means 1e correspond to the control unit 43 in FIG.

Next, the operation of each device configured as shown in FIGS. 2 to 5 will be described with reference to FIG. FIG.
It is a sequence diagram which shows the procedure of the line allocation process performed by a mobile communication terminal, a wireless base station, and the mobile switching center 11.
These processes are performed by the control unit 27 of the mobile communication terminal, the control unit 43 of the radio base station, and the CPU 50 of the mobile exchange 11. Hereinafter, description will be given along the step numbers shown in the drawing.

[S11] From the wireless base station to the mobile switching center 11
Initial setting for. [S12] The mobile switching center 11 sends an initial setting response to the wireless base station. [S13] A communication request is transmitted from the mobile communication terminal to the wireless base station.

[S14] Upon receipt of the communication request, the radio base station refers to the line use status table in the RAM of the memory 44 and searches for a free line. If there is a free line, a series of processes in step S18 is executed to connect the line. If there is no available line, the process proceeds to step S15.

[S15] The radio base station refers to the line use status table in the RAM of the memory 44 to check whether there is a line used for the location registration process. If there is no line used for the location registration processing, although not shown, a notification that line allocation is not possible is transmitted to the mobile communication terminal. If there is a line used for location registration processing,
Proceed to step S16.

[S16] The radio base station has a timer and starts the timer. A predetermined time is set in the timer, and after the predetermined time has elapsed, step S17
Proceed to. As the predetermined time, the maximum required time from the time when the position registration process is started to the time when the position registration process ends and the telephone line used for position registration becomes idle is set.

[S17] R of the memory 44 in the radio base station
The free line is searched again by referring to the line usage table of AM. Normally, the line for which location registration was performed should become idle after a lapse of a predetermined time. If there is a free line, proceed to step S18. If there is no free line,
Although not shown, a notification that the line cannot be allocated is transmitted to the mobile communication terminal. Alternatively, the process may return to step S15.

[S18] A normal series of processes for line connection is performed. As described above, when there is no space in the communication line due to the location registration processing, the line connection can be established by waiting for a short predetermined time. Therefore, it is possible to reduce the manual operation of the mobile communication terminal, such as a re-call that was required in the past, and to eliminate the notification of the line allocation failure and the communication of the re-call that are performed between the mobile communication terminal and the base station. Therefore, the traffic volume is reduced. The mobile communication terminal is required to stand by for a predetermined time in the communication state, but since it is a short time, battery consumption does not become a problem. Thus, a smoother line connection can be achieved.

Next, a second embodiment will be described. Since the configuration and operation of the second embodiment are basically the same as those of the first embodiment, the configuration of the first embodiment shown in FIGS. 2 to 5 and the sequence shown in FIG. And explain.

In the second embodiment, the user inputs a time corresponding to the above predetermined time by the key input device 33 of the mobile communication terminal shown in FIG. The input timing for this time is the position of step S19 in FIG.
This time is sent to the radio base station together with the communication request at the time of the communication request shown in step S13. The form of the communication request message at this time is shown in FIG. The above-mentioned time is mounted in the portion labeled "delay time" in FIG. 11 and sent to the radio base station.

The wireless base station receives the communication request and extracts a predetermined time from the "delay time" in the communication request. Then, similarly to the operation of the first embodiment, step S14
If the following processing is performed, all communication lines are in use, and there is a line used in location registration processing,
The device waits for the extracted predetermined time, and then searches for an available line again.

As described above, in the second embodiment, the user can arbitrarily set the predetermined time. Next, a third embodiment will be described. Since the configuration and operation of the third embodiment are basically the same as those of the first embodiment, the configuration of the first embodiment shown in FIGS. 2 to 5 and the sequence shown in FIG. And explain.

In the third embodiment, the mobile exchange 11
Is the initial setting response of step S12 of FIG.
The "location registration elapsed time" corresponding to the above predetermined time is transmitted to the wireless base station as system information. In response to this, the wireless base station stores the position registration elapsed time at the position of step S20 in FIG. That is,
In the RAM of the memory 44 of the wireless base station shown in FIG.
It is stored in the form as shown in.

In the radio base station, similar to the operation of the first embodiment, the processing from step S13 is performed, all communication lines are in use, and the position registration processing is used therein. When there is a line, the position registration elapsed time stored in the RAM of the memory 44 is taken out, treated as the above-mentioned predetermined time, and waited for only the position registration elapsed time, and then the free line is searched again.

As described above, in the third embodiment, the predetermined time can be arbitrarily set by the mobile switching device 11 side. Next, a fourth embodiment will be described. Since the configuration of the fourth embodiment is basically the same as that of the first embodiment, the configuration of the first embodiment shown in FIGS. 2 to 5 is used as it is.

The operation of the fourth embodiment will be described with reference to FIG. FIG. 13 shows a mobile communication terminal, a wireless base station,
3 is a sequence diagram showing a procedure of a line allocation process performed by the mobile switching center 11. FIG. These processes are performed by the control unit 27 of the mobile communication terminal, the control unit 43 of the radio base station, and the CPU 50 of the mobile exchange 11. Hereinafter, description will be given along the step numbers shown in the drawing.

[S21] From the wireless base station to the mobile switching center 11
Initial setting for. [S22] An initial setting response is sent from the mobile exchange 11 to the wireless base station. [S23] A communication request is transmitted from the mobile communication terminal to the wireless base station.

[S24] Upon receipt of the communication request, the wireless base station refers to the line use status table in the RAM of the memory 44 and searches for an available line. If there is a free line, a series of processes in step S30 is executed to connect the line. If there is no available line, the process proceeds to step S25.

[S25] The radio base station refers to the line use status table in the RAM of the memory 44 to check whether there is a line used for the location registration process. If there is no line used for the location registration processing, a notification that the line cannot be allocated is transmitted to the mobile communication terminal using the call line allocation refusal message shown in FIG. In this notification that the line cannot be allocated, a non-allocatable code indicating that all lines are used for the call is installed in the "rejection reason" column. Although not shown, when the unassignable code is received, the mobile communication terminal ends the communication request process.

[S26] As a result of the processing in step S25,
If there is a line used for the location registration processing, the standby instruction notification is transmitted using the call line allocation refusal message shown in FIG. In the notification of this waiting instruction, "Rejection reason"
Since there is a line used in the location registration process in the column and it is possible to connect soon, a standby instruction code indicating that it is desired to wait for a while is installed, and a predetermined time is installed in the "delay time" field. As the predetermined time, the maximum required time from the time when the position registration process is started to the time when the position registration process ends and the telephone line used for position registration becomes idle is set.

[S27] The mobile communication terminal has a timer, and when receiving the notification of the standby instruction, the timer is started. The sent predetermined time is set in the timer. After the elapse of the predetermined time, the process proceeds to step S28. While the timer is running, the mobile communication terminal once releases the wireless line and enters a normal discontinuous reception state.

[S28] The mobile communication terminal makes a communication request again to the radio base station after waiting a predetermined time. This communication request is made automatically and does not depend on the operation of the user. [S29] The wireless base station refers to the line use status table in the RAM of the memory 44 and searches for an available line again.
Normally, the line for which location registration was performed should become idle after a lapse of a predetermined time. If there is a vacant line, the process proceeds to step S30. If there is no vacant line, a line allocation impossible notification is transmitted to the mobile communication terminal although not shown. Alternatively, the process may return to step S25.

[S30] A normal series of processes for line connection is performed. As described above, in the fourth embodiment, when there is no available communication line due to the location registration processing, the mobile communication terminal side is shifted to the intermittent reception state and waits for a short predetermined time, The communication request is made again after a predetermined time has elapsed. Therefore, battery consumption in the mobile communication terminal is reduced as compared with the first embodiment. However,
A little more traffic. It should be noted that the artificial operation in the mobile communication terminal, such as the re-calling, which is conventionally required, is unnecessary in the fourth embodiment.

Next, a fifth embodiment will be described. Since the configuration and operation of the fifth embodiment are basically the same as those of the fourth embodiment, the configuration of the first embodiment shown in FIGS. 2 to 5 (configuration of the fourth embodiment) Is basically the same) and the sequence shown in FIG.

In the fifth embodiment, the control unit 43 of the radio base station shown in FIG. 4 is provided with a timer for each line and a difference calculation unit. The timer is a timer that starts when the location registration process is started on the corresponding line. further,
The RAM of the memory 44 is provided with the line-by-line position registration elapsed time table shown in FIG. The time measured by the corresponding timer is stored in this table and updated every 10 ms.

In the wireless base station, similar to the operation of the fourth embodiment, the processing from step S23 is performed, all communication lines are in use, and the position registration processing is used therein. If there is a line, in step S30 of FIG. 13, the position registration elapsed time is read from the line-based position registration elapsed time table stored in the RAM of the memory 44, and the difference calculation unit subtracts this position registration elapsed time from the predetermined time. This difference time is loaded in the “delay time” column of the call line allocation refusal message and transmitted to the mobile communication terminal as a notification of a standby instruction. The mobile communication terminal treats this difference time as the above-mentioned predetermined time, waits for the position registration elapsed time, and then makes a communication request again.

As described above, in the fifth embodiment, as compared with the fifth embodiment, the predetermined time to wait is calculated strictly and used. Next, a sixth embodiment will be described. Since the configuration and operation of the sixth embodiment are basically the same as those of the fourth embodiment, the configuration of the first embodiment shown in FIGS. 2 to 5 (configuration of the fourth embodiment) Is basically the same) and the sequence shown in FIG.

In the sixth embodiment, the user inputs a time corresponding to the above predetermined time by the key input device 33 of the mobile communication terminal shown in FIG. The input timing for this time is the position of step S31 in FIG.
This time is stored in the mobile communication terminal.

In the radio base station, as in the operation of the fourth embodiment, the processes of steps S23 to S25 are performed, all the communication lines are in use, and they are used in the position registration process. If there is a line that is open, the wireless base station notifies the mobile communication terminal of a standby instruction. This notification does not include the predetermined time.

Upon receiving the notification of the standby instruction, the mobile communication terminal reads the time input and stored in step S31, and treats this time as the above predetermined time. That is, it waits for a predetermined time and then sends a communication request again to the wireless base station.

As described above, in the sixth embodiment, the user can arbitrarily set the predetermined time. Next, a seventh embodiment will be described. Since the configuration and operation of the seventh embodiment are basically the same as those of the fourth embodiment, the configuration of the first embodiment shown in FIGS. 2 to 5 (configuration of the fourth embodiment) Is basically the same) and the sequence shown in FIG.

In the seventh embodiment, the mobile exchange 11
Is the initial setting response of step S22 of FIG.
The "location registration elapsed time" corresponding to the above predetermined time is transmitted to the wireless base station as system information. In response to this, the wireless base station extracts the location registration elapsed time and stores the location registration elapsed time at the position of step S32 in FIG. That is, it is stored in the RAM of the memory 44 of the radio base station shown in FIG. 4 in the form as shown in FIG.

In the radio base station, the position registration elapsed time stored in the RAM of the memory 44 is read in the process of step S26 and is loaded in the "delay time" column of the call line allocation refusal message to notify the standby instruction. Send to mobile communication terminal. The mobile communication terminal treats this location registration elapsed time as the above-mentioned predetermined time, waits for only the location registration elapsed time, and then makes a communication request again.

As described above, in the seventh embodiment, the predetermined time can be arbitrarily set by the mobile switching device 11 side. Next, an eighth embodiment will be described. Since the configuration of the eighth embodiment is basically the same as that of the first embodiment, the configuration of the first embodiment shown in FIGS. 2 to 5 is used as it is. In the eighth embodiment, the communication request terminal table is provided in the RAM of the memory 44 of the wireless base station shown in FIG. The form of the communication request terminal table is shown in FIG.

The operation of the eighth embodiment will be described with reference to FIG. FIG. 16 shows a mobile communication terminal, a radio base station,
3 is a sequence diagram showing a procedure of a line allocation process performed by the mobile switching center 11. FIG. These processes are performed by the control unit 27 of the mobile communication terminal, the control unit 43 of the radio base station, and the CPU 50 of the mobile exchange 11. Hereinafter, description will be given along the step numbers shown in the drawing.

[S41] A communication request is transmitted from the mobile communication terminal to the wireless base station. In addition, although illustration was omitted,
Before step S41, there is processing for initial setting and initial setting response as in the first embodiment.

[S42] Upon receipt of the communication request, the radio base station refers to the line use status table in the RAM of the memory 44 and searches for an available line. If there is a free line, a series of processes in step S51 is executed to connect the line. If there is no free line, the process proceeds to step S43.

[S43] The radio base station refers to the line use status table in the RAM of the memory 44 to check whether there is a line used for the location registration process. If there is no line used for the location registration processing, a line allocation impossible notification is transmitted to the mobile communication terminal. Although not shown, when receiving the notification that the line cannot be allocated, the mobile communication terminal ends the communication request process.

[S44] As a result of the processing in step S43,
If there is a line used for the position registration processing, the identification number of the mobile communication terminal that has made the communication request in step S41 is stored in the communication request terminal table in the RAM of the memory 44 of the wireless base station. The identification numbers are stored in this table in the order in which the communication requests are received.

[S45] The radio base station transmits a notice that the line cannot be allocated to the mobile communication terminal. In mobile communication terminals,
When receiving the notification that the line cannot be allocated, the communication request process is terminated.

[S46] The radio base station refers to the line use status table in the RAM of the memory 44 and searches for an empty line. Normally, the line used for location registration processing should be idle.

[S47] As a result of the processing in step S46,
When a free line is found, the first stored one of the identification numbers of the mobile communication terminals stored in the communication request terminal table of the RAM of the memory 44 is read out, and the radio base station is re-established in the mobile communication terminal. Send a communication request notification. This re-communication required notification is a notification indicating that a free line has been found, and therefore a communication request may be issued if desired.

[S48] On the mobile communication terminal side which has received the re-communication required notification, the user performs a communication request operation if a communication request is to be issued. The mobile communication terminal that has received the re-communication required notification may automatically transmit the communication request.

[S49] The mobile communication terminal makes a communication request again to the radio base station. [S50] The wireless base station refers to the line use status table in the RAM of the memory 44 and searches for a free line again.
If there is a vacant line, the process proceeds to step S51. If there is no vacant line, although not shown, a notification that the line cannot be allocated is transmitted to the mobile communication terminal, or the process returns to step S43.

[S51] A normal series of processes for line connection is performed. As described above, in the eighth embodiment, when there is no available communication line due to the location registration process, the identification number of the mobile communication terminal that has made the communication request is stored and the waiting line is awaited. Then, the radio base station notifies the mobile communication terminal corresponding to the stored identification number of the re-communication request. In this way, the line connection may be smoothly performed.

Next, a ninth embodiment will be described. Since the configuration and operation of the ninth embodiment are basically the same as those of the eighth embodiment, the configuration of the first embodiment shown in FIGS. 2 to 5 (configuration of the eighth embodiment) Is basically the same) and the sequence shown in FIG.

In the ninth embodiment, when the mobile communication terminal receives the re-communication request notification, the LED display device 32 of FIG. 3 is turned on in step S52 of FIG. As a result, the user can be informed that a free line has been found, and that if he / she wants to issue a communication request, he / she can do so, and the user can be prompted to perform a communication request operation.

Instead of the LED display device 32, sound may be notified by a buzzer or the like.

[0070]

As described above, according to the present invention, when all the communication lines are in use and the communication lines are in use due to the location registration processing, the communication system waits for a short predetermined time and then Make a line connection.

As a result, human operation at the mobile communication terminal is reduced, and the amount of traffic between the mobile communication terminal and the base station is reduced. The mobile communication terminal is required to stand by for a predetermined time in the communication state, but since it is a short time, battery consumption does not become a problem.

Thus, a smoother line connection can be achieved.

[Brief description of drawings]

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

FIG. 2 is an overall configuration diagram of a mobile communication system to which the first embodiment is applied.

FIG. 3 is a block diagram showing an internal configuration of a mobile communication terminal.

FIG. 4 is a block diagram showing an internal configuration of a radio base station.

FIG. 5 is a block diagram showing an internal configuration of a mobile exchange.

FIG. 6 is a diagram showing a line usage status table.

FIG. 7 is a diagram showing a sequence of a calling process.

FIG. 8 is a diagram showing a sequence of an incoming call process.

FIG. 9 is a diagram showing a sequence of location registration processing.

FIG. 10 is a sequence diagram showing a procedure of line allocation processing performed in a mobile communication terminal, a wireless base station, and a mobile exchange.

FIG. 11 is a diagram showing a form of a communication request message.

FIG. 12 is a diagram showing a form of a memory that stores a location registration elapsed time.

FIG. 13 is a sequence diagram showing a procedure of line allocation processing according to the fourth embodiment.

FIG. 14 is a diagram showing a form of a call line allocation refusal message.

FIG. 15 is a diagram showing a line-by-line location registration elapsed time table.

FIG. 16 is a sequence diagram showing a procedure of line allocation processing in the eighth embodiment.

FIG. 17 is a diagram showing a communication request terminal table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 base station 1a monitoring storage means 1b empty line searching means 1c location registration line searching means 1d empty line re-searching means 1e communication line assigning means 2 mobile communication terminal

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuto Toyonaga 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor, Kyoko Abe 1015, Kamedotachu, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited

Claims (14)

[Claims] 1. A line allocation device of a mobile communication system, which performs location registration processing via a communication line, monitors the usage conditions of all the communication lines allocated to a base station, and monitors the usage conditions of all the communication lines. A monitoring storage unit for storing each line, and an empty line for searching an available communication line by referring to the usage status data stored in the monitoring storage unit when the base station receives a communication request from a mobile communication terminal. Search means and position registration line search for searching a communication line used for position registration processing by referring to usage data stored in the monitoring storage means when the empty line search means cannot find an empty communication line And the location registration line searching means, when the location registration line searching means finds a telephone line for location registration processing, waits for a predetermined period of time and refers to the usage status data stored in the monitoring storage means. And the sky line re-search means to find a communication line, which had again, when the air-line re-search unit has found an empty telephone line,
A line allocation device for a mobile communication system, comprising: a line allocation unit for performing a line allocation process. 2. The notifying means for notifying the mobile communication terminal which has sent the communication request, that the communication line allocation is impossible when the empty line re-searching means cannot find an empty communication line. The line allocation device for a mobile communication system according to claim 1, further comprising: 3. The predetermined time that the idle channel re-searching means waits from the time when the location registration processing is started to the time when the location registration processing ends and the telephone line used for location registration becomes idle. 2. The line allocation device for a mobile communication system according to claim 1, wherein the maximum required time is set. 4. A setting unit provided in the mobile communication terminal for setting a desired time, a transmitting unit provided in the mobile communication terminal for transmitting the desired time together with the communication request to the base station, A predetermined time setting means which is provided in the base station, extracts a desired time sent from the transmitting means, sends the desired time to the air channel re-searching means, and causes the air channel re-searching means to use the time as the predetermined time; The line allocation device for a mobile communication system according to claim 1, further comprising: 5. A desired time transmitting means provided in a mobile exchange for transmitting a desired time to the base station, and a desired time transmitted from the desired time transmitting means provided in the base station, to the empty line. 2. The line allocation device for a mobile communication system according to claim 1, further comprising: a predetermined time setting unit that is sent to a re-searching unit and causes the empty line re-searching unit to use it as the predetermined time. 6. A line allocation device for a mobile communication system, which performs location registration processing via a communication line, monitors the usage status of all the communication lines provided in a base station and allocated to the base station. Monitoring storage means for storing the current usage status of the communication line for each line; and the monitoring storage means provided in the base station and stored in the monitoring storage means when the base station receives a communication request from the mobile communication terminal. A vacant line searching means for searching for a vacant call line by referring to the usage data, and a memorized circuit stored in the monitoring storage means when the vacant line search means cannot find a vacant call line Location registration line searching means for searching for a telephone line used for location registration processing with reference to usage data, and location registration line searching means provided in the base station for the location registration processing. When found, standby instruction transmitting means for transmitting a standby instruction to the mobile communication terminal, and provided in the mobile communication terminal, when the standby instruction is received, wait for a predetermined time to elapse, and after that elapse, the communication request is reissued. Communication request retransmitting means for transmitting to the base station, and when receiving a recommunication request from the communication request retransmitting means provided in the base station, refer to the usage status data stored in the monitoring storage means. And an empty line re-searching means for searching again for an empty empty call line, and a call line allocating means provided in the base station and performing a call line allocation process when the empty line re-searching means finds an empty call line. And a line allocation device for a mobile communication system. 7. The mobile communication according to claim 6, further comprising communication request terminating means provided in the mobile communication terminal and terminating the communication request processing when a standby instruction is received from the standby instruction transmitting means. System line allocation device. 8. The standby instruction transmitted by the standby instruction transmitting means to the mobile communication terminal, when the location registration processing is started, the location registration processing ends, and the communication line used for the location registration is idle. Including the set time set to the maximum required time to reach the state, the communication request retransmitting means, to retrieve the set time included in the standby instruction, and use the set time as the predetermined time. 7. The line allocation device for a mobile communication system according to claim 6. 9. A plurality of clocking means provided in the base station for each telephone line and starting timing when a location registration process is started in a corresponding telephone line, and the location registration line provided in the base station. When the searching means finds a call line for location registration processing, the position registration processing ends after the time value at the time measurement means corresponding to the call line and the time when the location registration processing is started, and is used for location registration. And a difference calculation means for calculating a difference from the maximum required time until the time when the communication line is idled, wherein the standby instruction transmitted by the standby instruction transmission means to the mobile communication terminal includes: 7. The time difference calculated by the time difference calculating means is included, and the communication request retransmitting means extracts the time difference included in the standby instruction, and uses the time difference as the predetermined time. Mobile communication sys Absence of line allocation apparatus. 10. The mobile communication terminal further comprises setting means for setting a desired time, wherein the communication request re-transmitting means receives the standby instruction,
7. The line allocation device for a mobile communication system according to claim 6, wherein a desired time set by the setting means is used as the predetermined time. 11. A desired time transmitting means provided in a mobile exchange for transmitting a desired time to the base station, and a desired time transmitted from the desired time transmitting means provided in the base station, to the mobile communication. Transfer means for transferring to the terminal, and a predetermined time setting means provided in the mobile communication terminal for causing the communication request re-transmitting means to use the desired time transferred by the transfer means as the predetermined time. 7. The line allocation device for a mobile communication system according to claim 6, wherein the line allocation device is provided. 12. A line allocation device of a mobile communication system, which performs location registration processing via a communication line, monitors the usage conditions of all the communication lines allocated to a base station, and monitors the usage conditions of all the communication lines. A monitoring storage unit for storing each line, and an empty line for searching an available communication line by referring to the usage status data stored in the monitoring storage unit when the base station receives a communication request from a mobile communication terminal. Search means and position registration line search for searching a communication line used for position registration processing by referring to usage data stored in the monitoring storage means when the empty line search means cannot find an empty communication line An identification code storage means for storing an identification code of the mobile communication terminal that has sent the communication request when the location registration line search means discovers a communication line for location registration processing; A non-notification means for notifying the mobile communication terminal that the call line cannot be allocated, and the use status data stored in the monitoring storage means are constantly referred to, and when the call line becomes idle, the call line is sent to the mobile communication terminal. A line allocating device for a mobile communication system, comprising: an availability notifying means for notifying that allocation is possible. 13. The mobile communication terminal further comprises a communication request transmitting unit that automatically transmits a communication request to the base station when receiving a notification that the communication line can be allocated from the availability notifying unit. 13. The line allocation device for a mobile communication system according to claim 12. 14. An informing unit, provided in the mobile communication terminal, for informing a user that the call can be made when a notification that the call line can be allocated is received from the availability notifying unit; 13. The line allocation device for a mobile communication system according to claim 12, further comprising: a communication request transmitting unit that receives a transmission instruction of the communication request and transmits a communication request to the base station.