JPH06113358A - Cordless telephone exchange system - Google Patents

Abstract

PURPOSE:To relieve the processing load as to the position registration of a mobile terminal equipment in the cordless telephone exchange system in which the mobile terminal equipment sends a registration signal, a connector receiving the signal returns a notice signal representing the presence location of a terminal equipment and the presence position of the mobile terminal equipment is managed. CONSTITUTION:A notice signal received by a reception means 5 before one period is stored in storage means 6,7. The notice signals are compared by a comparator means 11 and its consecutive coincident number of times is counted by a counter means 12. The count is compared with a preset reference value in a storage means 8 by the comparator means 13, an transmission control means 14 selects a 1st period I1 set in a storage means 9 in advance or a 2nd period I2 set in a storage means 10 depending on the relation of quantities (I1<I2) and controls a transmission means 4 based on the selected period to send a registration signal periodically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone exchange system for accommodating mobile radio terminals moving within a predetermined area by radio lines.

In recent years, with the diversification of user needs and the development of communication technology, it is necessary to equip exchanges and terminals with wireless functions.
There is provided a cordless telephone exchange system that enables a mobile terminal moving within a jurisdiction area to make or receive a call.

In this type of cordless telephone exchange system, a jurisdiction area is divided into a plurality of zones, and a connection device for directly wirelessly communicating with a mobile terminal is arranged in each zone, and the mobile terminal and the nearest one are arranged. The location of the mobile terminal is managed by appropriately communicating with the connection device, and it is desired to reduce the processing load associated with the management of the location of the mobile terminal.

[0004]

2. Description of the Related Art FIG. 4 is a diagram showing a schematic configuration of a general cordless telephone exchange system. As shown in the figure, a general cordless telephone exchange system includes an exchange body (PBX) 21, a plurality of connection devices (BS) 22, and a plurality of mobile terminals (PS) 23 which are portable wireless telephone terminals. It is configured.

Although not shown, the exchange main body 21 is connected with an extension line, a local line and the like. Each of the connection devices 22 is wire-connected to the exchange main body 21, and at least one connection device 22 is arranged in each zone 24 formed by dividing the jurisdiction area of this cordless telephone exchange system. The connection device 22 has a wireless function and transmits / receives a predetermined signal to / from the mobile terminal 23.

Management of the location of the mobile terminal 23 is performed as follows. That is, the mobile terminal 23 periodically transmits a position registration signal including the identification number of the mobile terminal 23 to the connection device 22 at a predetermined cycle. Upon receiving this, the nearest connection device 22 notifies it to the exchange main body 21, and the exchange main body 21 recognizes that the mobile terminal 23 exists in the zone controlled by the connection device 22.

On the other hand, the connection device 22 returns a position notification signal indicating the zone number of the zone controlled by the connection device 22 to the mobile terminal 23, and the mobile terminal 23 recognizes the zone number in which it exists. .

[0008]

By the way, the time when a mobile terminal existing zone recognized by the exchange main body and the actual mobile terminal existing zone are completely coincident with or different from each other are as short as possible. It is desirable from the standpoint of call connection processing.

Therefore, conventionally, a relatively short value is adopted as the transmission cycle of the position registration signal of the mobile terminal, although it depends on the number of zones to be called when a call arrives, the selection method, or the size of the zones. .

However, if the location registration signal of the mobile terminal is frequently transmitted in a short period, the processing load associated with the location management of the mobile terminal of the exchange main body including the connection device and the battery consumption of the mobile terminal increase. There is a problem.

The present invention has been made in view of the above circumstances, and an object thereof is to reduce the processing load associated with the location management of a mobile terminal without causing a problem in the location management of the mobile terminal. That is.

[0012]

FIG. 1 is a block diagram showing the principle configuration of the present invention, showing a cordless telephone exchange system comprising an exchange main body 1, a plurality of connection devices 2 and a plurality of mobile terminals 3. There is.

The connection device 2 is connected to the exchange main body 1, and the connection device 2 is arranged in each zone in which the area covered by the cordless telephone exchange system is divided into a plurality of areas.

The mobile terminal 3 comprises a transmitting means 4, a receiving means 5,
First storage means 6, second storage means 7, third storage means 8, fourth storage means 9, fifth storage means 10, first comparison means 11,
Counting means 12, second comparing means 13, and transmission control means 1
4 is equipped.

The transmission means 4 transmits a position registration signal to the connection device 2. The receiving unit 5 receives the position notification signal indicating the zone in which the mobile terminal 3 is present (the zone under the control of the connection device 2) returned from the connection device 2 that has received the position registration signal from the transmission unit 4.

The first storage means 6 stores and holds the position notification signal immediately after it is received by the reception means 5. The second storage unit 7 stores and holds the position notification signal received by the reception unit 5 one cycle before. The stored contents of the first storage unit 6 and the second storage unit 7 are updated every time the position notification signal is received by the reception unit 5.

A reference value for cycle selection is preset in the third storage means 8. The first storage unit 9 is preset with a first period which is a transmission period of the position registration signal.
As the first cycle, for example, a conventional transmission cycle can be adopted. A second cycle, which is a transmission cycle of the position registration signal longer than the first cycle, is preset in the fifth storage unit 10.

The first comparison means 11 compares and detects the coincidence and non-coincidence of the position notification signals stored and held in the first storage means 6 and the second storage means 7 and notifies the counting means 12. The counting means 12 counts the number of consecutive matches by the first comparing means 11 and notifies the second comparing means 13 of the counted value. For example, the counting means 12 sets the initial value to "1", adds "1" when a match is detected, and returns the value to "1" when a mismatch is detected.

The second comparing means 13 compares and detects the magnitude of the count value from the counting means 12 and the reference value set in the third storing means 8 and notifies the transmission controlling means 14 of the magnitude. The transmission control means 14 selects the first cycle set in the fourth storage means 9 based on the comparison result of the second comparison means 13 when the count value is smaller than the reference value, and the reference value If the count value is greater than or equal to, the second cycle set in the fifth storage means 10 is selected, and the transmission means 4 is controlled to periodically transmit the position registration signal in the corresponding cycle. .

[0020]

In general, the mobile terminal does not have a constant tendency to move, frequently moving across zones or staying in one zone for a long time.

However, for a mobile terminal that stays in one zone for a long time, there is no difference between the existence zone recognized by the exchange main body (including the connecting means) and the actual existence zone. It is not necessary to perform the location registration process, and if such a mobile terminal can be specified and the number of times of the location registration process can be reduced, the processing load associated with the location registration process of the entire system can be reduced.

Therefore, according to the present invention, when the position notification signals returned from the connection device which has received the position registration signal from the mobile terminal are consistent with each other, the mobile terminal stays in the same zone for a long time. On the other hand, if the location registration signal changes frequently, it is determined that the mobile terminal is moving, so that the mobile terminal staying in the same zone for a long time and the zone between To distinguish it from mobile terminals that frequently move.

For a mobile terminal that stays in the same zone for a long time, the transmission cycle of the location registration signal is set relatively long, and for a mobile terminal that frequently moves across each zone, The transmission cycle of the position registration signal is made relatively short.

This minimizes the occurrence of a situation in which the existence zone of the mobile terminal recognized by the main body of the exchange (including the connection device) and the actual existence zone are different from each other while accommodating the location registration of the mobile terminal. The processing load on the system can be reduced.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. Referring to FIG. 2, there is shown a circuit configuration of a main part of a mobile terminal which constitutes a cordless telephone exchange system to which the present invention is applied.

In the figure, 30 is a processor (control device) of a mobile terminal, 31 is a first register (REG1), 3
2 is the second register (REG2), 33 is the third register (REG3), 34 is the fourth register (REG4), 35
Is a fifth register (REG5). Reference numerals 36 and 37 denote delay circuits which delay the input signal by (i + 1) bits and output the delayed signal.

38 is a first comparator, 39 is a second comparator, 4
0 is a counter (CNT), 41 is an inverting circuit, 42 is an AND circuit, 43 is an OR circuit, 44 is a prep-prop circuit, 45 is an AND circuit, and 46 is an AND circuit.

The reception data (position notification signal) having a data length of i bits and the reception clock from the reception means (not shown) are input to the first register 31 and delayed by i + 1 bits via the delay circuits 36 and 37. It is configured to be input to the second register 32. That is, the position notification signal immediately after reception is stored in the first register 31, and the position notification signal one cycle before is sequentially stored and held in the second register 32.

A reference value for cycle selection is preset in the third register 33. In this embodiment, the reference value is "3". The interval I ₁ as a transmission cycle is preset in the fourth register 34. The interval I ₂ as a transmission cycle is preset in the fifth register 35.
In this embodiment, I ₁ <I ₂ is set.

The first comparator 38 compares and detects whether the position notification signal stored and held in the first register 31 and the position notification signal stored and held in the second register 32 match. , "1" is output in the case of coincidence, and "0" is output in the case of disagreement.

The output of the first comparator 38 is the counter 40,
An OR circuit 43 and an AND circuit 42 are provided via an inverting circuit 41.
Entered in. The counter 40 sets the initial value to “1” and sequentially increments when the output of the first comparator 38 is “1”, and outputs the number of coincidence CP. When the output of the first comparator 38 is "0", it is reset.

The second comparator 39 compares the coincidence count CP of the counter 40 with the reference value of the third register 33, and outputs "1" if they match and "0" if they do not match.
The output of the second comparator 39 is the AND circuit 42 and the OR circuit 4
Input to 3. The outputs of the AND circuit 42 and the OR circuit 43 are input to the K input and J input of the flip-flop circuit 44, respectively, and the Q output of the flip-flop circuit 44 is input to the AND circuit 45 and the Q bar output is input to the AND circuit 46.

When the Q output of the flip-flop circuit 44 is "1", the transmission cycle I ₁ of the fourth register 34 is output to the processor 30, and when the Q output is "1", the fifth register is output. The transmission cycle I _{2 of} 35 is the processor 3
It is output to 0.

The processor 30 receives the input transmission cycle I
Based on ₁ or I ₂ , the transmission data (position registration signal) and the transmission clock are sent to the transmission means (not shown), and the transmission means transmits the position registration signal to the connection device.

Next, the processing of this embodiment will be described with reference to FIG. First, when the power source of the mobile terminal (PS) is turned on, the processor 30 instructs the transmission means to transmit the position registration signal to the connection device (BS), and the transmission means transmits the position registration signal (step "below. S
Abbreviated as T ”1). The connecting device receiving this position registration signal returns a position notification signal (zone number: α) (ST
2).

The zone number α indicated by the position notification signal is stored in the first register 31, and the contents of the first register 31 and the contents of the second register 32 (in this case, since the position notification signal has not been received before). , Which is a predetermined value that is not used) are compared by the first comparator 38, the first comparator 38 detects a mismatch, and the first comparator 38 outputs "0".

Since the output of the first comparator 38 is "0", the counter 40 is reset and the number of coincidences is "C".
P = 1 ”. Since the reference value of the third register 33 is "3", which is different from the number of times of coincidence of the counter 40, the output of the second comparator 39 is "0", and the K input of the flip-flop circuit 44 is "0", J. The input becomes "1", therefore the Q output becomes "1", the Q bar output becomes "0", and the transmission cycle I ₁ of the fourth register 33 is input to the processor 30.

After the lapse of the predetermined signal processing time by each circuit, the processor 30 waits for the interval I ₁ to elapse, then instructs the transmitting means to transmit the position registration signal, and the position registration signal is transmitted (ST3). Here, the mobile terminal is moving to another zone, and the connecting device that has received this position registration signal returns a position notification signal (zone number: β) (ST).
4).

The zone number β indicated by this position notification signal is stored in the first register 31, and the contents of this first register 31 and the contents of the second register 32 (the zone number α indicated by the position notification signal one cycle before are: (Stored) is compared by the first comparator 38, the first comparator 38 detects a mismatch, and the first comparator 38 outputs "0".

Since the output of the first comparator 38 is "0", the counter 40 is reset and the number of coincidences is "C".
P = 1 ”. Since the reference value of the third register 33 is "3", which is different from the number of times of coincidence of the counter 40, the output of the second comparator 39 is "0", and the K input of the flip-flop circuit 44 is "0", J. The input becomes "1", therefore the Q output becomes "1", the Q bar output becomes "0", and the transmission cycle I ₁ of the fourth register 33 is input to the processor 30.

After the lapse of the predetermined signal processing time by each circuit, the processor 30 waits for the interval I ₁ to elapse, then instructs the transmitting means to transmit the position registration signal, and the position registration signal is transmitted (ST5). Here, the mobile terminal remains in the same zone, and the connecting device that has received this position registration signal returns a position notification signal (zone number: β) (ST).
6).

The zone number β indicated by the position notification signal is stored in the first register 31, and the contents of the first register 31 and the contents of the second register 32 (the zone number β indicating the position notification signal one cycle before are (Stored) is compared by the first comparator 38, the first comparator 38 detects a match, and the first comparator 38 outputs "1".

Since the output of the first comparator 38 is "1", the counter 40 is counted and the number of coincidences is "C".
P = 2 ". Since the reference value of the third register 33 is “3”, which does not match the number of times of matching of the counter 40, the output of the second comparator 39 becomes “0” and the K input of the flip-flop circuit 44 becomes “0”. Since the J input becomes "0" and the previous contents are retained, the Q output becomes "1", the Q bar output becomes "0", and the transmission cycle I of the fourth register 34
₁ is input to the processor 30.

After the lapse of the predetermined signal processing time by each circuit, the processor 30 waits for the interval I ₁ to elapse, then instructs the transmitting means to transmit the position registration signal, and the position registration signal is transmitted (ST7). Here, the mobile terminal remains in the same zone, and the connecting device that has received this position registration signal returns a position notification signal (zone number: β) (ST).
8).

The zone number β indicated by the position notification signal is stored in the first register 31, and the contents of the first register 31 and the contents of the second register 32 (the zone number β indicating the position notification signal one cycle before are (Stored) is compared by the first comparator 38, the first comparator 38 detects a match, and the first comparator 38 outputs "1".

The output of the first comparator 38 is "1".
Then, the counter 40 is counted and the number of coincidences is “C
P = 3 ". The reference value of the third register 33 is “3”
Yes, since it matches the number of matches of the counter 40, the second
The output of the comparator 39 becomes "1" and flip-flop times
K input of path 44 becomes "1", J input becomes "1".
Q output is "0" and Q bar output is "1".
Transmission cycle I of the transistor 35 ₂Is input to the processor 30
It

After the lapse of the predetermined signal processing time by each circuit, the processor 30 waits for the interval I ₂ to elapse, then instructs the transmitting means to transmit the position registration signal, and the position registration signal is transmitted (ST9). Here, the mobile terminal remains in the same zone, and the connecting device that has received this position registration signal returns a position notification signal (zone number: β) (ST).
10).

The zone number β indicated by the position notification signal is stored in the first register 31, and the contents of the first register 31 and the contents of the second register 32 (the zone number β indicating the position notification signal one cycle before are (Stored) is compared by the first comparator 38, the first comparator 38 detects a match, and the first comparator 38 outputs "1".

Since the output of the first comparator 38 is "1", the counter 40 is counted and the number of coincidences is "C".
P = 4 ”. Since the reference value of the third register 33 is "3", which is different from the number of times of coincidence of the counter 40, the output of the second comparator 39 is "0", and the K input of the flip-flop circuit 44 is "0", J. The input becomes "0", so the Q output "0" and the Q bar output "1" are retained as they are,
The transmission cycle I ₂ of the fifth register 35 remains input to the processor 30.

After the lapse of the predetermined signal processing time by each circuit, the processor 30 waits for the interval I ₂ to elapse, then instructs the transmitting means to transmit the position registration signal, and the position registration signal is transmitted (ST11). After that, these are repeated.

As described above, according to the present embodiment, the transmission cycle I ₁ is set shorter than the transmission cycle I ₂ , so that when the mobile terminal moves between the zones frequently, it moves. If the location registration processing is performed in the short transmission cycle I ₁ and the mobile terminal remains in the same zone for a long time, the location registration processing is performed in the long transmission cycle I ₂ .

Therefore, when the mobile terminal moves between the zones frequently by crawling, the location registration processing is performed in a short cycle, so that the exchange terminal actually recognizes the zone in which the mobile terminal exists. However, if the mobile terminal stays in the same zone for a long time, the location registration process is performed with a long transmission cycle. The processing load (including the device) is small.

[0053]

As described above, according to the present invention, since the tendency of movement of the mobile terminal is grasped and the period for carrying out the position registration processing is changed based on the tendency, the mobile terminal does not straddle between zones. If the mobile terminal frequently moves, the location registration process is performed in a short cycle, and it is unlikely that the existing zone of the mobile terminal recognized by the exchange main body differs from the actual existence zone. If the location remains in the same zone for a long time, location registration processing is performed with a long transmission cycle, and the processing load of the exchange main body (including the connection device) for location registration processing can be significantly reduced. Play.

[Brief description of drawings]

FIG. 1 is a block diagram showing a principle configuration of the present invention.

FIG. 2 is a diagram showing a specific circuit configuration of an embodiment of the present invention.

FIG. 3 is a diagram showing a signal transmission / reception sequence of an embodiment of the present invention.

FIG. 4 is a diagram showing a schematic configuration of a general cordless telephone exchange system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 exchange main body 2 connection device 3 mobile terminal 4 transmitting means 5 receiving means 6 first storing means 7 second storing means 8 third storing means 9 fourth storing means 10 fifth storing means 11 first comparing means 12 counting means 13th 2 comparison means 14 transmission control means

Claims (1)

[Claims] 1. A connection device arranged in each of a plurality of zones.
(2) and a mobile terminal that is arbitrarily moved between the plurality of zones
(3), the mobile terminal (3) transmits a position registration signal, and the connection device which receives the position registration signal returns a position notification signal indicating the zone in which the mobile terminal (3) exists, thereby In a cordless telephone exchange system adapted to manage a zone where a terminal (3) is present, first storage means (6) for storing and holding a received position notification signal
A second storage means (7) for storing and holding the position notification signal received one cycle before; and a third storage means (8) preset with a reference value for cycle selection.
A fourth storage means (9) in which a first cycle which is a transmission cycle of the position registration signal is preset, and a second cycle which is a transmission cycle of the position registration signal which is longer than the first cycle. A fifth storage means (10), a first comparison means (11) for comparing and detecting the coincidence or non-coincidence of the position notification signals stored and held in the first storage means (6) and the second storage means (7), A counting means (12) for counting the number of consecutive coincidences by the first comparing means (11), a count value by the counting means (12) and a reference value set in the third storage means (8) Second comparing means for comparing and detecting (1
3) and when the count value is smaller than the reference value, the first cycle set in the fourth storage means (9) is selected, and when the count value is larger than or equal to the reference value, Is the fifth storage means (1
The transmission control means (14) for selecting the second period set to (0) and transmitting the position registration signal periodically,
A cordless telephone exchange system, which is equipped with (3).