JPH0918934A - Position registration control method in phs mobile communication system and public radio base station integrated with the position registration control function - Google Patents

Abstract

PURPOSE: To reserve effectively a PHS terminal transmission reception channel by allowing a base station to control reception of position registration requests per unit time to reject the reception of the position registration requests over a prescribed number of times per unit time thereby minimizing useless position registration in an area where many PHS terminal possessors are in existence and exited therefrom and reducing considerably the position registration cost. CONSTITUTION: A discrimination section 13 receiving a position registration request from a PHS terminal 1 only once in one reception cycle based on a timer value is provided with a ring timer 14 generating repetitively a timer value corresponding to a reception cycle. In the presence of a registration request in the PHS terminal 1, a base station uses the discrimination section 13 to discriminate whether or not the position registration of the other PHS terminal 1 is accepted before and when the position registration request is a first request, the request is sent to a PHS management center via a relay station. The center registers the position information and a position registration reply signal is sent to the base station and the discrimination section 13 simultaneously enters the position registration reject state till a succeeding reception cycle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a location registration control method in a PHS mobile communication system and a public radio base station incorporating the location registration control function.

[0002]

2. Description of the Related Art In a PHS mobile communication system, when one PHS portable terminal (PS-1) or a subscriber telephone makes an incoming call to another PHS terminal (PS-2) via a network, the position of each terminal is changed. It is necessary for the network to know. The terminal requests the location registration of the PHS to the network from the nearest base station. Then, the network verifies (authenticates) the personal information to verify the identity,
The location registration ends.

To briefly explain such a location registration system with reference to FIG. 4, in FIG. 4, the PHS mobile communication system stores the location information in the PHS management center 4 for storing the location information.
0, a PHS connecting device (relay station 32) wiredly connected via the common line signaling network 30 and the digital exchange 31.
And a plurality of base stations 20 wired to the relay station 32. The relay station 32 creates location information based on a location registration request from the base station 20.

In the position registration in such a device, first, the position information notified from the radio base station 20 on the terminal 1 side is received, and when the position registration information stored in the PHS terminal 1 is different, the PHS terminal 1 A position registration signal is sent to the wireless base station 20 in the wireless zone (position registration area) where the user is. Management center 4 via relay station 32
A position registration signal converted into a form necessary for exchange connection arrives at 0 and the position information is stored. The above operation is repeated every time the PHS terminal 1 moves and the location registration area changes.

On the other hand, the trace connection is used from a general subscriber telephone to PH.
When the S terminal 1 number is dialed, the originating exchange 31 inquires through the common signaling network 30 which location registration area the PHS terminal 1 corresponding to the PHS management center 40 is in, and the location registration information necessary for the exchange. The tracking connection is performed based on the location registration information, and the wireless base station 20 of the corresponding location registration area performs a calling process by radio.

When a general subscriber telephone number is dialed from the PHS terminal 1, the telephone number of the other party is input through the ten-key pad, and then the call button is pressed, so that each terminal 1
The corresponding authentication information number of the base station 2 together with the telephone number
0 to the PHS management center 40 via the relay station 32, the terminal 1 is recognized based on the PHS management center 40 authentication information, and after confirming whether the caller is a contractor, the general subscriber The billing process is performed by connecting to the telephone and answering the call by the called party.

Therefore, if location registration is performed for each wireless zone of each base station, the number of location registrations increases because the connection between the base station and the PHS management center is a line (wired) connection using a common communication line network. The more you do so, the more you will uselessly increase the line usage charges that occur in location registration. Particularly in the case of the PHS mobile communication system, the radio wave zone reached by each base station is 100 to 50.
It is extremely narrow as 0 m, and for this reason, the location registration area is not formed by the radio zone of each base station 20 but is formed by an aggregate of a plurality of adjacent base stations 20, but such a configuration is adopted. Even in the railway area where trains pass, intersections in the center of the city,
A public wireless base station installed in an area where a large number of PHS terminal holders having PHS terminals, such as in a station yard, receives location registration of many PHS terminal holders.

[0008]

However, in the railway area, intersections in the center of the city, etc., the location registration of only a large number of PHS terminal holders is accepted, and the probability of calling from that area is low. Is in vain. The large number of wasteful location registrations not only leads to a geometrical increase in the line usage fee, but also severely limits the actual transmission and reception of PHS terminals.

In view of such conventional technology, the present invention reduces unnecessary position registration as much as possible in an area where many PHS terminal owners flow, and greatly reduces the position registration cost.
An object of the present invention is to provide a location registration control method in a PHS mobile communication system capable of effectively securing a PHS terminal transmission / reception line and a public wireless base station incorporating the location registration control function.

[0010]

The present invention is characterized in that the base station controls acceptance of location registration requests per unit time, and rejects acceptance of location registration requests a predetermined number of times or more per unit time. To do. That is, specifically, when there is a location registration request from a PHS terminal, a public wireless base station is provided with a limiting function for limiting the reception of the location registration per unit time preset in the base station. It is characterized by being provided in.

[0011]

The present invention focuses on the following points. The terminal is the first location registration request, and if the location registration information stored in the PHS terminal and the current location registration area are different even if the wireless base station side does not necessarily accept the location registration request, P
The location registration request is continuously issued from the HS terminal. Meanwhile, PHS
The terminal cannot make a call while moving on a train or the like. Therefore, the location registration request at such a place is completely useless. Therefore, within the PHS location registration area where the registration area is 100 to 500 m, it is only necessary to accept the location registration request of the PHS terminal when walking or stationary, and the transit time is about 5 to 10 seconds. Not accepting the location registration request of the PHS terminal on the move such as a train leads to effective use of the location registration. Therefore, when the position registration frequency per unit time is set so that the base station receives the position registration request from the PHS terminal only once every five seconds, the operation is as shown in FIG.

That is, the operation of the present invention will be described with reference to the time chart of FIG. In the figure, if terminals A, B, and C are PHS terminals owned by pedestrians and stationary persons, and D, E, and F are moving PHS terminals such as a train, AF in the first 5 seconds.
Although the location registration request signals of the six terminals are transmitted to the base station, only the location registration requests of the terminal A are accepted and the others are rejected. During this time, the PHS terminals of D to F leave the area by moving by train or the like. Therefore, the location registration request signals of the two terminals B and C are transmitted to the base station in the next 5 seconds.
Only the location registration request of the terminal is accepted, and C is rejected. Further, in the next 5 seconds, the position registration request signal of the terminal C is transmitted to the base station and accepted.

Therefore, according to the present invention, even if a large number of PHS terminal holders make location registration requests at railroad areas, city center intersections, etc., location registration requests with a low call probability from the area are excluded. It is possible to prevent unnecessary increase in line usage fee for location registration,
It is possible to secure an effective line for actual transmission / reception of the PHS terminal.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; However, unless otherwise specified, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention, but are merely illustrative examples. Not just. FIG.
11 is a block diagram showing a main configuration of an acceptance determination logic device of a public wireless base station, 11 is a central processing unit (CPU) for controlling various operations described above or later, 12 is a timer value of a location registration acceptance cycle described later. A parameter storage unit 13 for setting a ring timer for repeatedly generating a timer value corresponding to the acceptance cycle is a determination unit for accepting a location registration request from the PHS terminal only once in one acceptance cycle based on the timer value. 14 is attached.
Reference numeral 15 is a communication circuit section for transmitting and receiving data to and from the PHS terminal, which comprises a demodulation section, a modulation section, a quality monitoring section, a TDMA / TDD processing section and the like. 16 is a line control unit for connecting to a public line,
Reference numeral 17 is a signal generation unit that generates position registration information. When the location registration of one PHS terminal is accepted in each acceptance cycle, the determination unit 13 rejects the location registration request of another PHS terminal until the start of the next acceptance cycle. Uses, for example, a flip-flop circuit activated based on a position registration completion signal from the PHS management center, and sends a position registration refusal signal from the F / F to the determination unit 13 in response to the position registration completion signal of one PHS terminal. The F / F is a reset signal (acceptance cycle end signal) of the ring timer 14 attached to the determination unit 13.
It is configured to wait until the location registration completion signal of the first PHS terminal in the next acceptance cycle is sent out.

Next, a control sequence for position registration using the public wireless base station will be described with reference to FIG.
First, when there are location registration requests from a plurality of terminals in one reception cycle as shown in the time chart of FIG. 1, when the location registration request is first issued from the first PHS terminal, the determining unit 13 in the base station sends the location registration request to the location registration request. It is determined whether or not the location registration of another PHS terminal is accepted, and if the request is the first location registration request, the location registration request is sent to the P via the relay station.
It is sent to the HS management center 40.

Then, the center 40 sends an authentication request signal to the terminal via the relay station and the base station, and when the terminal sends an authentication response signal, the center verifies (authenticates) the personal information and confirms the identity. After registering the location information in the center, a location registration response signal is sent to the base station, and the location registration completion signal is sent from the base station to the PHS terminal. The location registration is rejected. Therefore, during this acceptance cycle, location registration is rejected even if location registration signals of other PHS terminals are sent to the base station.

[0017]

[Effect] As described above, according to the present invention, useless location registration is reduced as much as possible in a region where a large number of PHS terminal holders flow, and location registration cost is greatly reduced.
The S terminal transmission / reception line can be effectively secured.

[Brief description of the drawings]

FIG. 1 is a time chart diagram showing a location registration control method in a PHS mobile communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a main configuration of an acceptance determination logic device of a public wireless base station.

FIG. 3 is a control sequence diagram showing a location registration control method in the PHS mobile communication system according to the embodiment of the present invention.

FIG. 4 is a schematic configuration diagram of a mobile communication system used in an embodiment of the present invention.

[Explanation of symbols]

 1 PHS terminal 11 CPU 12 Parameter storage unit 13 Judgment unit 15 Communication circuit unit 16 Line control unit 17 Signal generation unit 20 Radio base station 32 Relay station

Claims (2)

[Claims] 1. When the position information notified from the public wireless base station is received and the position information is different from the position registration information stored in the PHS terminal, the position is registered from the PHS terminal to the public wireless base station of the location registration area where the user is. Send registration signal to PHS
In a location registration control method for transmitting and receiving PHS terminals within a predetermined service area while performing location registration of terminals, the base station controls acceptance of location registration requests per unit time, and a predetermined number of times per unit time or more is controlled. Registration control method in a PHS mobile communication system, characterized by refusing to accept a location registration request 2. When the position information notified from the public wireless base station is received and the position information is different from the position registration information stored in the PHS terminal, the position is registered from the PHS terminal to the public wireless base station of the location registration area where the user is. Send registration signal to PHS
In a public wireless base station in a PHS mobile communication system that performs location registration of a terminal, when there is a location registration request from a PHS terminal, in accordance with the number of location registrations per unit time preset in the base station, Public wireless base station characterized by having a restriction function for restricting its reception