JPH0279629A - Radio telephone controller - Google Patents

Abstract

PURPOSE:To reduce the number of communication cables by providing a means to connect a communication control unit to plural radio units with a multiplex transmission path and to transit/receive to multiplex the voice signal and the control signal of the radio unit. CONSTITUTION:The communication control unit is connected to the radio unit with the multiplex transmission path to transmit/receive to multiplex the voice signals and the control signals of the same number of radio units as that of radio units connected to the transmission path. A multiplex signal received at a communication control unit interface circuit 108(109) via a reception circuit 207 is separated for each radio unit by a separation circuit 210, however, the separation is performed without separating the voice signal from the control signal. Meanwhile, four signals from the radio units are multiplexed at the separation circuit 210 by the multiplex processing of a multiplex circuit 211 according to a synchronous pulse extracted from a reception signal, and sent to a multiplex transmission path via a transmission circuit 208. In such a way, it is possible to reduce the number of communication cables.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device used in a local wireless telephone system, and particularly to a connection method between a line control device and a wireless connection device.

[Conventional technology]

Conventionally, in this type of premises wireless telephone system, there are two
Independent communication cables were laid from the line control equipment to all wireless connection equipment.

[Problem to be solved by the invention]

For this reason, despite the fact that a plurality of wireless connection devices are installed in a concentrated manner in each wireless zone.

Communication cables for the number of wireless connection devices must be laid there. Furthermore, since each wireless connection device is provided with an independent power source, it is necessary to construct a power line for each wireless connection device.

[Means to solve the problem]

In the wireless telephone control device of the present invention, the transmission paths between the nine line control devices and the wireless connection devices are connected by a multiplex transmission path that multiplexes and transmits and receives voice signals and control signals for the number of wireless connection devices connected thereto. , a means for distributing signals from multiplexed transmission paths to each wireless connection device, conversely multiplexing signals from each wireless connection device and sending them out to the transmission path, and a power supply shared by each wireless connection device. On the 9-line control equipment side, the signals from the multiplex transmission path are separated for each wireless connection device, and the audio signals are sent to the switch circuit network determined for each wireless connection device. The control signal is distributed to the terminals, and the control signal is sent to the main control section of the line control device, and conversely, the audio signal from the switch circuit network and the control signal from the main control section are multiplexed and sent out to the transmission line. There is.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 shows one embodiment of the present invention, and is a block diagram of a local wireless telephone system having two wireless zones each having four wireless connection devices.

101 is a main control unit of a line control unit (LCU), and a two-time division switch network 102. It controls the wireless connection device interface circuits 103 and 104 and the upper station interface circuits 105a, 105b, and 105c. 106,
107 are line controller interface circuits 108 and 109 installed in wireless zones 112 and 113, respectively.
This is a multiplex transmission line that connects the line controller and the line controller.

FIG. 2 is a configuration diagram of the wireless connection device interface circuit 103 (104) and line control device interface circuit log (lo9) in FIG. 1.

The wireless connection device interface circuit 103 (104) receives the four encoded audio signals from the time division switch network 102 and the control section 201 by instructing the main control section 101 to send them to the wireless connection device. control signals output through the data bus are multiplexed. This multiplexing is performed by the multiplexing circuit 20.4 in the frame configuration shown in FIG. The signal is then sent out to the multiplex transmission path through the transmission circuit 205. On the other hand, a multiplexed signal having the frame structure shown in FIG. The signal is separated into four audio signals and four control signals. The separated audio signals are respectively sent to the time division switch network, and the control signals are sent to the control unit 2 through the data bus.
01, and further sent to the main control unit 101.

In the line control device interface circuit 108 (109), a separation circuit 210 separates the multiplexed signal received through the reception circuit 207 for each wireless connection device, but this separation is performed without separating the audio signal and the control signal. .

On the other hand, signals from four wireless connection devices are sent to one separation circuit 21.
At 0, the received signal is multiplexed into a signal having the frame structure shown in FIG. 3 by multiplexing processing performed by the multiplexing circuit 211 according to the extracted synchronization pulse, and is sent out to the multiplex transmission path through the transmitting circuit 208. Power to each wireless connection device and power to the line control device interface circuit itself are supplied by a power supply unit 212.

FIG. 3 shows the frame structure of the multiplexed signal described above. The frame synchronization pattern FSP is used for frame synchronization in the 9-separation circuit. Vl.

V2. V3. V4 is an encoded audio signal for each wireless connection device or to each wireless connection device.

CI, C2, C3, and C4 are control signals from or to each wireless connection device.

It is used for call connection control.

〔Effect of the invention〕

As explained above, the present invention provides means for connecting a line control device and a plurality of wireless connection devices via multiple transmission paths in a local wireless telephone system, and multiplexing and transmitting and receiving voice signals and control signals of the wireless connection devices. This has the effect of reducing the number of communication cables. Furthermore, by providing a shared power supply section on the wireless connection device side, there is an effect that power supply work can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a local wireless telephone system that is an embodiment of the present invention, FIG. 2 is a block diagram of the wireless connection device interface circuit and line control device interface circuit portion of FIG. 1, and FIG. This is a frame structure of a multiplexed signal used in the present invention. 101... Main control unit of line control device, 102... Time division switch circuit network, 103, 104... Wireless connection device interface circuit + l 05 a e 105
b z105c...Upper station interface circuit,
106゜107...Multiple transmission line, 108.109...
・Line controller interface circuit, 110a, 11
0b. 110c, 110d - Wireless connection device of wireless sea/112, 111a, 111b, 1llc, 1lld.
...Wireless connection device of Wireless Sea 7113.

Claims (1)

[Claims] 1. A plurality of portable wireless telephones, a plurality of individual or joint access type wireless connection devices distributed in each wireless zone, and a plurality of wireless connection devices located between the fixed telephone network and the plurality of wireless connection devices; In a premises wireless telephone system consisting of a line control device that centrally controls the
The transmission path between the multiple wireless connection devices installed in each wireless zone and the line control device is connected by a multiplex transmission path that multiplexes and transmits and receives audio signals and control signals for the number of wireless connection devices connected to it. The wireless connection device side includes means for distributing signals from multiplex transmission paths to each wireless connection device, conversely multiplexing signals from each wireless connection device and sending them out to the transmission path, and a power source shared by each wireless connection device. On the line control equipment side, the signal from the multiplex transmission path is separated into signals for each wireless connection device, and the audio signal is separated from the switch circuit network determined for each wireless connection device. The control signal is distributed to the terminals, and the control signal is sent to the main control section of the line control device, and conversely, the audio signal from the switch circuit network and the control signal from the main control section are multiplexed and sent out to the transmission line. A wireless telephone control device characterized by: