JPS62225031A - Tdma terminal equipment for satellite communication - Google Patents

Abstract

PURPOSE:To easily attain automatic restoration after the occurrence of hit without giving any effect on the operation of a TDMA system by detecting power restoration after the occurrence of hit and transferring the operation data stored in advance to plural equipments. CONSTITUTION:A power from a main power supply l is sent to a TDMA terminal station equipment 3 via a power supply detection section 2 at the normal operation and fed to equipments 4-l-4-n respectively. An instruction signal transferring an operation data relating to the TDMA operation to the equipment 3 is sent corresonding to the input of a power supply restoration detection signal generated by a detection section 2 from a central supervisory control sectioin 5 at the power restoration from a power failure such as occurrence of hit. Various operation data are stored in a TDMA operation data storage section 6 in advance relating to the equipment 3 and the operation data corresponding to the command signal is transferred sequentially individually corresponding to the equipments 4-l-4-n. After the end of transfer, the equipment 3 is set automatically to the normal reception state. A control signal of transmission start is set to the equipment 3 in the control section 5 and the result is inputted to the equipment 3. Thus, the transmission is restarted without intervention of the operator.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a TDMA terminal device for satellite communication, and in particular,
The present invention relates to a TDMA terminal device for satellite communication that improves the function of returning to operation when the power is restored after a momentary power outage.

[Conventional technology]

Conventionally, this type of TDMA terminal equipment for satellite communication is generally installed in developed countries, and therefore the reliability of the power supply system as a power supply to the TDMA terminal equipment for satellite communication is high. Therefore, as a countermeasure against instantaneous power interruptions, the actual situation is that no consideration has been taken in the equipment configuration for a fully automatic return to operation function after instantaneous power interruptions. Intelsat, Etelsat 120Mbit/S
In TDMA terminal equipment for TDMA systems, TDMA operation data is retained in memory with battery backup in each device that makes up the terminal equipment, so that it can be returned to operation in a short time. It does not have an automatic operation return function. For this reason, in conventional TDMA terminal equipment for satellite communication, manual work is always required to restore normal operation after a momentary power interruption.

(Problems to be Solved by the Invention) In the above-mentioned conventional TDMA terminal equipment for satellite communication, since there are differences in the characteristics of the power supply unit of each component device at the time of instantaneous power interruption, each device There is also variation in the timing of detecting a power outage in T D
When operating an M A system, in addition to the normal operation mode initial setting parameters, TDMA-specific burst and
A large amount of operational data such as time plans and channeling plans is required. At the start of operation, only necessary parts of these operational data are input to each device in the TDMA terminal device in a specified format.

If a momentary power outage occurs, all operational data will be retained by battery backup, etc., and will be lost for as long as Not only does this require extra hardware, but also the problem of the timing of power failure detection mentioned above, and the problem of how to maintain these operational data in terms of the operation of the TDMA terminal equipment. It has the disadvantage that it is derived.

[Means for solving problems]

The TDMA terminal device for satellite communication of the present invention is a TDMA terminal device for satellite communication that is configured of a plurality of devices each having its own power supply unit l, and is capable of recovering power after a momentary power outage. power supply detection means for detecting the power restoration and outputting a predetermined power restoration detection signal;
a TDMA operation data storage unit that automatically restores the function of the TDMA terminal device for satellite communication by sequentially transferring pre-stored operation data to the plurality of devices via the power restoration detection signal; , consists of.

〔Example〕

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

FIG. 1 is a block diagram showing the main parts of an embodiment of the present invention. As shown in FIG. 1, this embodiment includes a main power source 1, a power source detection unit 2, a device (114-1
4-2, . . . , device (n) includes a TDMA terminal device 3 including 4-n, a centralized monitoring control section 5, and a TDMA operation data storage section 6. Here, n is a positive integer,
This corresponds to the number of devices configuring the TDMA terminal device 3.

In FIG. 1, the power output from the main power supply 1 is sent to the TDMA terminal device 3 via the power supply detection unit 2 during normal operation, and is transmitted to the TDMA terminal device 3, respectively, to device (1) 4-1 and device f2.
14-2, . . . are supplied to device (n) 4-n. In the event of a power outage such as a momentary power outage, a power recovery detection signal is generated in the power detection unit 2 when the power is restored, and the centralized monitoring control unit 5 performs TDMA operation in response to the input of the power recovery detection signal. TDM for the data storage unit 6
An instruction signal for causing the TDMA terminal station 3 to transfer operational data including a burst time plan, channeling plan, etc. related to the A operation is sent. The TDMA operation data storage unit 6 stores in advance various operation data regarding the TDMA terminal device 3, and the operation data corresponding to the instruction signal is stored in the device (1) 4-1, device (2>
4-2, . . . , device (n) The data is sequentially transferred as individual operation data for each device 4-n. When the transfer of the operational data to the TDMA terminal device 3 is completed, the TDMA terminal device 3 is automatically set to a normal receiving operation state.

The centralized monitoring control unit 5 originally has a monitoring control function for the operation of the TDMA terminal device 3, and
The operational status of the system is constantly monitored and centrally controlled. As described above, when the TDMA terminal device 3 automatically returns to the receiving operation state in response to power restoration, the central monitoring control unit 5 receives a control signal sent from a predetermined reference station as a transmission stop request. Unless otherwise, a control signal for starting transmission is set for the TDMA terminal device 3 and input to the TDMA terminal device 3. Therefore, in the T'DMA terminal device 3, transmission is resumed without operator intervention.

Note that the TDMA operation data storage unit 6 in the above embodiment may be installed at a location remote from the TDMA terminal device 3 in some cases.
The operational data storage section 6 is connected to the TDMA terminal device 3 and the central monitoring control section 5 via a terrestrial communication line, a satellite communication line, or the like.

〔Effect of the invention〕

As explained above, the present invention enables the TDMA system to automatically recover after a momentary power outage by integrally operating the power supply detection section, TDMA operation data storage section, and central monitoring control section added to the TDMA terminal equipment. This has the advantage that it can be done economically and easily without affecting the operation of the system.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the main parts of an embodiment of the present invention. In the figure, 1... main power supply, 2... power supply detection section, 3... TDMA terminal equipment, 4-1...
...Device (1), 4-2 ...Device (21
, 4-n...device (n), 5... central monitoring control unit, 6... TDMA operation data storage/
-11-chodengen 2--1denjusugahiroi 3--7DMA41 Xun Caiyi 4-f-11ken 4(l) Kaya /ffl

Claims (1)

[Claims] In a TDMA terminal device for satellite communication consisting of a plurality of devices each having its own power supply unit, when power is restored after a momentary power outage, power supply detection detects the power restoration and outputs a predetermined power restoration detection signal. means, and TDMA operation data that automatically restores the function of the TDMA terminal device for satellite communication by sequentially transferring pre-stored operation data to the plurality of devices via the power restoration detection signal. A TDMA terminal device for satellite communication, comprising: a storage unit.