JPH08149571A - Approach line device for distributed base station - Google Patents

Abstract

PURPOSE: To realize an inexpensive approach line by using a public digital telephone line as the approach line to connect a distributed base station connection device and a distributed base station of the digital radio system. CONSTITUTION: Distributed base stations 17a and 17b are connected to a general public digital telephone line network 12 through public digital telephone lines 16a and 16b. In the waiting state, the network 12 is released not to charge the base station 17a (17b). When a call is originated from a public pocket telephone set 18, it is connected to a distributed base station connection device 11 by the base station 17a (17b), the telephone line 16a (16b), and a connection route 15 and is converted and is switched and connected through an I' line 13 by the public digital telephone line network, and the base station 17a (17b) is charged by the public digital telephone line network, and the public pocket telephone set 18 is charged by the charging center of PHS. In this case, the former charge is the cost of maintenance of the approach line, and the matter is the burden to the subscriber of the public pocket telephone set 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to PHS (Perso).
A public digital telephone line is an I'line (4B + D), and a digital wireless line is a TDMA with four time slots (e.g.
(Time Division Multiple A
The present invention relates to an approach line device for exchanging / connecting using a public digital telephone line network when disposing distributed base stations.

[0002]

2. Description of the Related Art FIG. 3 shows a PH of a time division multiplexing system, for example.
S (Personal Handy Phone Sys
1a shows a conventional connection method for independently installing a base station for tem) to connect to a public digital telephone network, 1a,
1b is a public digital telephone line (I 'line) for communication carriers
(4B + D), 2 is a connection circuit with the public digital telephone line 1 for communication carriers, 3 is a transceiver of a digital wireless line, 4
Is an antenna. Next, the operation will be described. For example, it is divided into a call channel 4B and a control channel D by a connection circuit 2 with the public digital telephone lines 1a and 1b for communication carriers, and is connected to a digital radio line transceiver 3.
Call channel 4 of public digital telephone line 1 for telecommunications carriers
It is premised that B is connected to each other corresponding to the four time slots of the transceiver 3 of the digital radio line.

[0003]

In the conventional method of independently installing a PHS base station and directly connecting to a public digital telephone line for a communication carrier, four call channels correspond to four time slots of a digital radio line. Because
A base station installed in an area where the subscriber density is low has a drawback that the use efficiency of the public digital telephone line (I 'line) for communication carriers is extremely deteriorated and it is not economical. The present invention has been made to solve the above-mentioned problems, and a plurality of base stations are installed in a distributed manner so that a public telephone for public use and a public telephone for general public are provided between the public digital telephone line for communication carriers and the digital wireless line. We will improve the usage efficiency of the line by adopting the method of switching and connecting by using the approach line using the digital telephone line network, and at the same time, to enable the connection service of general ISDN terminals by using the distributed base station. To do.

[0004]

According to the first aspect of the present invention,
It is characterized in that the distributed base station connection device and the distributed base station of the digital radio system are connected using the public digital telephone line (ISDN line) as an approach line. The invention of claim 2 provides a base station with a digital radio transceiver and an IS.
It has a connection terminal for a DN terminal or a telephone terminal. According to a third aspect of the present invention, the digital wireless handset is a time division multiplex / time division simultaneous transmission / reception system, and at least one time slot is assigned to a personal handyphone system (PHS). According to the invention of claim 4, the distributed base station connection device has means for receiving and storing a location registration request from a subscriber terminal and means for performing location registration for a public digital telephone line for a communication carrier. It is a thing.

[0005]

According to the present invention, the general public digital telephone network can be occupied only when necessary. According to the invention of claim 2, the base station and the general public digital telephone network can be shared with other uses. According to the invention of claim 3, the digital wireless handset can be shared for home use and business use. According to the invention of claim 4, it is possible to register the location of the pocket telephone.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 11 is a distributed base station connection device, and 12
Is a public digital telephone line network, 13 is a public digital telephone line (I 'line) for communication carriers, 14 is a public digital telephone line for general use (ISDN line), 15 is a connection route, 16
a and 16b are public digital telephone lines for general use, 17a and 1
7b is a distributed base station, 18 is a public pocket telephone, and 19 is a home or office pocket telephone. The distributed base stations 17a and 17b are the general public digital telephone network 1
2 via public digital telephone lines 16a and 16b. In the standby state, the network 12 is released and the base station 17a or 17b is not charged. When a call is made from the public pocket telephone 18, the base station 17a or 17b, the telephone line 16a or 16b, and the connection route 15 are connected to the distributed base station connection device 11, converted, and converted to the public line via the I'line 13. Exchanged / connected by the digital telephone network, base station 17a or 1
7b is charged by the public digital telephone network, and the public pocket telephone 18 is charged by the PHS charging center. The former charge is the maintenance cost of the approach line, and the latter is the burden on the subscriber of the public pocket telephone 18. When the public pocket telephone 18 wants to receive an incoming call service, the location can be manually registered.

FIG. 2 shows the internal construction of the base station 17 of the present invention. 21 is a public digital telephone line connection circuit, 22 is a digital radio transceiver, 23 is a control circuit, 24 is an antenna, 25 is a fixed telephone, 26 is an ISDN terminal. When the base station 17 is installed in a general home, the digital radio transmitter / receiver 22 is shared for connection with the home pocket telephone 19, and the public digital telephone line 16 and the connection circuit 21 are connected.
Is a public pocket phone 18, a home pocket phone 1
9, shared with the fixed telephone 25 or the ISDN terminal 26. In this way, the approach line is used for various purposes, which makes it economical. As an example, comparing the maintenance cost by the conventional method and the maintenance cost by the method of the present invention, it can be seen that the latter is about 1/20, which is much cheaper. In the above description, the case where the public digital telephone line network is used has been described, but the same effect can be obtained by utilizing the analog telephone line network. In addition, T to the wireless telephone line
Although the DMA transceiver is used, a similar effect can be obtained by using a transceiver of another system.

[0008]

According to the invention described in claim 1, since the general public digital telephone line network is occupied only when necessary, the maintenance cost of the approach line can be reduced. According to the invention of claim 2, since the base station and the general public digital telephone network can be shared with other uses, the approach circuit can be made more inexpensive. According to the third aspect of the present invention, the digital wireless transceiver can be shared for home use and business use, so that the use efficiency of the transceiver is improved. According to the invention of claim 4, the pocket telephone can receive the incoming call service.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an internal configuration of a base station of the present invention.

FIG. 3 is a configuration diagram showing a conventional embodiment.

[Explanation of symbols]

1a, 1b Public digital telephone line (I 'line) for telecommunications carrier 2 Connection circuit with public digital telephone line for telecommunications carrier 3 Transmitter / receiver of digital radio line 4 Antenna 11 Distributed base station connection device 12 Public digital telephone line network 13 Public digital telephone line (I 'line) for telecommunication carriers 14 Public digital telephone line (ISD
N line) 15 Connection routes 16a, 16b Public digital telephone line (ISD
N line) 17a, 17b Distributed base station 18 Public pocket telephone 19 Home pocket telephone 21 Public digital telephone line connection circuit 22 Digital wireless transceiver 23 Control circuit 24 Antenna 25 Fixed telephone 26 ISDN terminal

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H04Q 7/26 7/30 H04Q 7/04 A

Claims (4)

[Claims] 1. A connection terminal for at least one public digital telephone line (ISDN line) and at least one public digital telephone line (I 'line) for communication carriers.
And a distributed base station connection device having a connection terminal with a digital wireless system having a connection terminal with at least one public digital telephone line, and the base station and the distributed base station connection device. Between base stations are connected and exchanged via a public digital telephone network, and approach line equipment for distributed base stations is characterized. 2. The base station comprises a digital radio transceiver and I
The approach line device for a distributed base station according to claim 1, characterized in that it has a connection terminal to an SDN terminal or a telephone terminal. 3. The digital wireless handset according to claim 1,
It is a time division simultaneous transmission / reception method, and at least one time slot has a personal handyphone system (PH
S) is assigned to the distributed base station approach line device according to claim 1. 4. The distributed base station connection device comprises means for receiving and storing a location registration request from a subscriber terminal and means for performing location registration for a public digital telephone line for a communication carrier. The approach line device for distributed base stations according to claim 1, characterized in that