JP3088295B2 - Satellite communication DAMA system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a satellite communication system in which, when a transmission request is issued from a certain earth station, a control station selects a connectable line from among the shared lines secured in advance for each earth station and transmits the signal to a satellite. Satellite communication DAMA (Demand
Assignment Multiple Access
ss; connection request allocation) system technology.

[0002]

2. Description of the Related Art FIG. 10 is an explanatory view of a conventional satellite communication DAMA system. Here, the satellite communication DAMA system means that a certain number of satellite links held by a repeater in a communication satellite are previously secured in common for each earth station, and when a call is generated from a certain earth station, a control station is called. A specific earth station controls the assignment of a satellite line, selects a free line from this common satellite line, and assigns it to that earth station.

In FIG. 10, 1 is a communication satellite, 2a to 2c are earth stations (hereinafter, referred to as slave stations) which are installed at different points and can communicate with each other via the communication satellite 1, and 3 is a slave station. It is a control station (hereinafter referred to as a master station) that exclusively monitors and controls the connection state of the satellite line connection established between them.

[0004] Here, the slave station 2a accommodates a telephone terminal 5a, and the slave stations 2b and 2c are connected to corresponding public network subscriber line exchanges (hereinafter referred to as LS exchanges) 4b and 4c, respectively. Further, the public network subscriber line exchanges 4b, 4c
Are connected to the telephone terminals 5b to 5g via the public network 8. FIG. 10 shows a slave station 2a and a slave station 2b according to a procedure described later.
Are connected by a satellite line T via the communication satellite 1.

Here, the capture signal H and the incoming response signal A are
A signal transmitted from the slave station connected to the caller's telephone terminal to the master station 3 via the communication satellite 1 and the incoming response signal S, the line designation signal C, and the line designation disable signal N are transmitted from the master station 3 to the communication satellite. 1 is a signal transmitted to the destination slave station connected to the destination telephone terminal designated by the master station 3 via the communication terminal 1. The details of these signals will be described later.

The conventional satellite communication DA configured as described above
The operation of the MA system will be described based on an operation sequence diagram shown in FIG. The telephone number in the public network 8 is “D ₁ D ₂ D ₃ ... D _n ” from the telephone terminal 5 a accommodated in the child station 2 a via the child station 2 b having the child station number “02”.
Consider the case of connecting to the telephone terminal 5d.

In this case, the user dials the slave station number "02" of the slave station 2b, which is the other slave station, from the telephone terminal 5a accommodated in the slave station 2a, designates the other slave station, and then designates the other slave station. The telephone number “D ₁ D ₂ D ₃ ... Of the telephone terminal 5 d that is the destination telephone terminal connected to the destination slave station in the public network 8.
D _n "by dialing a to specify the destination telephone terminal. That is, the dial number “02-D ₁ D ₂ D ₃ ” is transmitted from the telephone terminal 5 a.
··· D _n "the dial (SC10).

In this case, by dialing the slave station number "02" which is the first two digits of the dial number, the signals "0" and "2" constituting the dial number are transmitted from the slave station 2a via the communication satellite 1 to the master station. A capture signal H which is sequentially transmitted to the station 3 and indicates a capture (establishment) request for a line for satellite communication between the slave station 2a and the slave station 2b having the slave station number "02", which is the destination slave station. Is transmitted from the slave station 2a to the master station 3 via the communication satellite 1 (SC20).

The master station 3 that has received the capture signal H sent from the slave station 2a sends the slave station 2b having the slave station number "02".
If it is determined that connection with the slave station 2a is possible, the mobile station 2a transmits an incoming notification signal S indicating that there is a communication request with the slave station 2b to the slave station 2b (SC30).

The slave station 2b which has received the incoming notification signal S
Is an incoming response signal A as a response to the incoming notification signal S
Is returned to the master station 3 (SC40).

When the master station 3 receives the incoming response signal A from the slave station 2b, the master station 3 sends a line designation signal C designating a line to be used for satellite communication between the slave stations 2a and 2b, to the slave stations 2a and 2b.
To each of the slave stations 2a and 2b, and
(SC50).

The slave stations 2a and 2b using the satellite line T
The operation up to the connection with is immediately performed when the slave station number “02”, which is the first two digits of the number to be dialed, is input.

Next, the mobile station 2a and the mobile station 2b
, D ₁ , D ₂ , and D which form a dial number based on the previous dial when connected via a satellite line T via
₃ ", ..." D _n "telephone number" D ₁ in the PSTN 8 sequentially transmitted to the telephone terminal 5d to the slave station 2b via the satellite line T from slave station 2a is D ₂ D ₃ ... D " _n " is notified to the slave station 2b (SC60).

The telephone number "D ₁ D ₂ D ₃ ... D _n " is further transmitted from the slave station 2b to the LS exchange 4b connected to the slave station 2b, and the LS exchange 4b transmits the telephone number "D
₁ D ₂ D ₃ ··· D _n "exchange connects the line by calling the telephone terminal 5d via the public network 8, based on (SC70).
Thus, the telephone terminal 5a and the telephone terminal 5d are mutually connected via the satellite line T.

[0015]

As described above, in the conventional satellite communication DAMA system, when a connection is made to a destination telephone terminal, a destination telephone terminal is used to connect to the destination telephone terminal via a slave station. Since it was necessary to dial the slave station number of the destination slave station and the telephone number of the destination telephone terminal in the public network, check the slave station number of the destination slave station used to connect to the destination telephone terminal and dial. I had to.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and eliminates the operation of designating a slave station number of a slave station for relaying satellite communication, thereby eliminating the need for the public telephone of the counterpart telephone terminal. The satellite communication D which allows the master station to select the nearest station to the destination telephone terminal only by dialing the telephone number in the network and to connect to the destination telephone terminal via the destination station.
The aim is to obtain an AMA system.

[0017]

SUMMARY OF THE INVENTION A satellite communication DAMA system according to the present invention comprises a first earth station on a source telephone terminal side .
From the telephone terminal to the control station via the communication satellite
The control station that has transmitted the request
Select a second earth station on the talk terminal side, and select the first and second earth stations.
In satellite communication DAMA system for allocating satellite communication line between stations, the control station, at least a portion of the unique number assigned to each telephone terminal several earth stations for relaying the satellite communication to this telephone terminal The earth station data file registered in advance in association with the group numbers of the group of earth stations and the transmission request received through the communication satellite are included in the file.
The earth station to be connected to the destination telephone terminal from the earth station data file based on at least a part of the unique number. Earth station selecting means .
It is those that.

Also, if the first earth station on the source telephone terminal side
From the satellite to the control station via a communication satellite.
The control station that has transmitted the request
The second earth station on the side of the destination telephone terminal is selected, and the first and second earth stations are selected.
Satellite communication DAMA that allocates satellite communication lines between earth stations
In the system, the control station is provided for each telephone terminal.
At least part of the unique number
Several earth stations that relay satellite communications are grouped together
Earth station data registered in advance in correspondence with the earth station group number
File and the line acquisition received via a communication satellite.
Based on at least part of the unique number included in the request
From the earth station data file
Select the number of the earth station to be connected, and
Earth station selection means to be a second earth station;
One earth station transmits at least a part of the unique number to the
Transmission to the control station via a communication satellite in response to a line capture request
And the satellite communication line assigned by the control station
Transmitting the unique number of the other party's telephone terminal to the second earth station;
It is characterized by the following.

The earth station data file may be searched for.
And register the number of the earth station group with the priority of
The earth station selection means is given priority in order according to the priority order.
Can be connected to the other party's telephone terminal from a group of high ranking earth stations
A unique earth station number .

The unique number assigned to each telephone terminal is the area code of the telephone number in the public network of the telephone terminal.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 shows a satellite communication DA according to the first embodiment.
FIG. 3 is an explanatory diagram of the MA system. As a new configuration with respect to the conventional example, reference numeral 31a denotes a slave station data file provided in the master station 3; This is a slave station selecting means for selecting a corresponding destination slave station number from slave station data, which will be described later, registered in advance.

Generally, the telephone number of a telephone terminal in a public network is, for example, a number indicating a location area of the telephone terminal and a number indicating a position in the location area, such as an area code, a local area code and other numbers. It is composed of Therefore, the satellite communication DAMA system according to Embodiment 1
The remote station to be relayed via the satellite line is switched based on the number part indicating the location area of the remote telephone terminal, such as the area code and the local area code of the remote telephone terminal.

In the slave station data file 31a, as described above, for example, the first two digits of the area code of the telephone number in the public network of the telephone terminal from north to south in Japan are as follows.
Paying attention to the fact that the telephone number is determined for each area such as 02, 03, 04, ..., 06, etc. FIG. 2 shows a group of slave stations in which the slave station numbers of several slave stations that can be connected to the line (located near the destination telephone terminal) corresponding to the area of the number are listed as selection candidates.
And registered as shown.

[0024] For example, as shown in FIG. 2, if the number of the first k-order portion of the telephone number in the public network of a called telephone terminal is _{"B 1 B 2 B 3 ··· B} k ", the slave station The number is 11,
The slave station numbers 12 and 13 are grouped as a selection candidate into one group and registered as a destination slave station group.

The operation of the thus configured satellite communication DAMA system according to the first embodiment will be described with reference to an operation sequence diagram shown in FIG.

In the first embodiment, the public network 8 of the telephone terminal 5b
Of the first k digits in the telephone number of “B ₁ B ₂ B ₃
... B _k ”represent the above-mentioned location and location of the telephone terminal 5b, and when the telephone terminal 5a calls the telephone terminal 5b as the other party's telephone terminal, the master station 3 issues a call from the telephone terminal 5a. Consider a case where the number of the destination slave station is selected based on the leading k digits in response to a call.

In this case, the user does not need to be aware of which sub-station is the destination sub-station, and from the telephone terminal 5a accommodated in the sub-station 2a to the telephone number "5" of the telephone terminal 5b in the public network 8. B ₁ B ₂ B ₃ ... B _n ”(k <n) is directly dialed to designate a destination telephone terminal. That is, the telephone number “B ₁ B ₂ B ₃ ... B _n ” is dialed from the telephone terminal 5 a (SC 110).

In this case, by dialing the number “B ₁ B ₂ B ₃ ... B _k ” in the _first k digits of the telephone number, “B ₁ ”, “B ₂ ”, “B ₃ ” constituting the telephone number ... The signal of “B _k ” is sequentially output to the master station 3 via the communication satellite 1, so that a line for satellite communication between the slave station 2 a and the selected destination slave station is provided. Is transmitted from the slave station 2a to the master station 3 via the communication satellite 1 (SC120).

Here, in the master station 3 which has received the captured signal H, the slave station selecting means 31b selects the number "B ₁ B ₂ B ₃ ..." From the slave station data file 31a based on the captured signal H.
.. search for a slave station group corresponding to " _Bk ", determine a connectable slave station from the searched slave station groups, select a connectable slave station number, and assign it to the communication. (SC12
5).

In this case, as shown in FIG. 2, the slave station numbers 11, 12, and _{13 are} assigned to the numbers "B ₁ B ₂ B ₃ ... B _k ".
Since a slave station group consisting of three slave stations of thirteen is searched, the slave station selection means 31b appropriately selects a number of a connectable slave station from the slave station group.

The master station 3 which has received the capture signal H sent from the slave station 2a has, for example, a slave station number "12".
If the slave station 2c is selected, the incoming notification signal S indicating that a communication request has been made from the slave station 2a to the destination slave station.
Is transmitted to the slave station 2c (SC130).

The slave station 2c that has received the incoming notification signal S
Is an incoming response signal A as a response to the incoming notification signal S
Is returned to the master station 3 (SC140).

The master station 3 sends the incoming response signal A to the slave station 2
c, a line designation signal C for designating a line to be used for satellite communication between the slave stations 2a and 2c.
a and 2c, respectively, and assign a line,
a and the slave station 2c are connected by the satellite line T (SC15
0).

The slave station 2a and the slave station 2c by the satellite line T
The operation up to the connection with is immediately performed when there is a dial of “B ₁ B ₂ B ₃ ... B _k ” which is the _first k digit number of the telephone number.

Next, the slave stations 2a and 2c are connected to the communication satellite 1
When the telephone line is connected via the satellite line T via the Internet, the telephone number based on the previous dial is formed, including the first k-digit telephone number "B ₁ B ₂ B ₃ ... B _k ". B ₁ "," B ₂ ",
The signals “B ₃ ”,... “B _n ” are sequentially transmitted from the slave station 2 a to the slave station 2 c via the satellite line T, and the telephone number “B ₁ B ₂ B ₃ ” of the telephone terminal 5 b in the public network 8. .. _Bn "are notified to the slave station 2b, and further connected to the slave station 2c.
It is sent to the exchange 4b (SC160). Subsequent operations are the same as those of the above-described conventional example, and a description thereof will be omitted.

Therefore, according to the first embodiment, if a transmission request from a source telephone terminal to a destination telephone terminal via the first earth station is present in a communication satellite, the communication satellite and the partner are determined based on the transmission request. In a satellite communication DAMA system having a control station for allocating a second earth station for relaying satellite communication with a destination telephone terminal, the control station 3 has at least a unique number assigned to each telephone terminal. A slave station data file 31a registered in advance by associating a part with a number of a slave station group in which several earth stations that relay satellite communication to this telephone terminal are grouped together, and at least one of the unique numbers And a slave station selecting means 31b for selecting a slave station number connectable to the other party's telephone terminal from the slave station data file 31a based on the section and selecting the selected slave station as a second earth station. In satellite communications Eliminating the troublesome operation of specifying the slave station number of the other Sakiko station that performs can connect to the destination telephone terminal in a simple operation of dial a phone number in the public network of the destination telephone terminal.

Embodiment 2 In the first embodiment, if there is no applicable connectable slave station in the searched slave station group as a slave station located close to the other party's telephone terminal, for example, from the other party's telephone terminal for emergency emergency communication It is necessary to establish a line connection with the other party's telephone terminal even if the line is bypassed via another slave station at a remote point.

FIG. 3 shows a satellite communication DAM according to the second embodiment.
It is a block diagram of the slave station data file 32a of the A system. As shown in FIG. 3, the slave station data file 32a stores the remote station at least somewhat remote from the destination telephone terminal when there is no connectable slave station in the slave station group searched by the procedure described in the first embodiment. In order to establish communication with the other party's telephone terminal by bypassing the line via another slave station in the area, a certain number of the first k digits of the telephone number in the public network of the other party's telephone The above-described slave station group is provided as a search candidate by assigning a priority order for searching in the order of proximity to the other party's telephone terminal, for example, and the slave station selecting means 32b assigns this priority order to the dial of the first k digits. In order to select a slave station number.

The satellite communication DA according to the second embodiment
In the MA system, if there is no connectable slave station in the group of slave stations searched based on the acquisition signal H as in the first embodiment, the slave station selecting means 32b selects the slave station of the next priority. The number of a connectable slave station is selected from the group.

The operation of the thus configured satellite communication DAMA system according to the second embodiment will be described with reference to an operation sequence diagram shown in FIG. In the second embodiment, as in the first embodiment, the number “B ₁ B ₂ B ₃ ... B _k ” of the _first k digits in the telephone number of the telephone terminal 5 b in the public network 8.
Is a part indicating the above-mentioned location and position of the telephone terminal 5b, and when the telephone terminal 5a calls the telephone terminal 5b as a destination telephone terminal, the master station 3 responds to the call from the telephone terminal 5a. Consider a case in which a destination slave station is assigned based on a k-digit number.

In this case, the user does not need to be aware of which sub-station is the destination sub-station, and from the telephone terminal 5a accommodated in the sub-station 2a to the telephone number "B ₁ " in the public network 8 of the telephone terminal 5b. B ₂ B ₃ ··· B _n "directly to dial the to specify the destination telephone terminal. That is, dial the telephone number "B ₁ B ₂ B ₃ ... B _n " from the telephone terminal 5a (SC21).
0).

In this case, by dialing the number “B ₁ B ₂ B ₃ ... B _k ” in the _first k digits of the telephone number, “B ₁ ”, “B ₂ ”, “B ₃ ” constituting the telephone number ... The signals of “B _k ” are sequentially transmitted via the communication satellite 1 to capture a line for satellite communication between the slave station 2a and the other party's slave station with the other party's telephone terminal 5b. An acquisition signal H indicating an (establishment) request is transmitted to the master station 3 via the communication satellite 1 (SC220).

Here, in the master station 3 which has received the captured signal H, the slave station selecting means 32b selects the telephone number "B ₁ B ₂ B" from the slave station data file 32a based on the captured signal H.
₃ ... B _k ”, and selects a slave station number to be assigned to the transmission request from the searched slave station group (SC 225).

In this case, as shown in FIG. 2, slave station numbers 11, 12, 1 having the highest priority (first priority).
Since the slave station group including the three slave stations of No. 3 is searched, the slave station selection means 32b selects the number of the connectable slave station from the slave station group, as in the first embodiment.

However, if there is no connectable slave station in this slave station group, a slave station group which is a candidate for the next priority (second priority) is searched for, and this slave station group is searched. The number of the connectable slave station is appropriately selected from the above.

That is, if none of the three slave stations of the slave station numbers 01, 02, and 03 in the searched slave station group having the first priority can be connected to the station because the line is in use, etc. And retrieves a slave station group (slave station numbers 14, 15, 16) having the second highest priority, and selects a connectable slave station number from the slave station group. Here, it is assumed that the slave station 2c whose slave station number is “15” is selected.

The master station 3 which has received the capture signal H sent from the slave station 2a sends an incoming notification signal S indicating that there is a communication request from the slave station 2a to the slave station to the slave station 2c. It transmits (SC230). The subsequent operation is the same as in the first embodiment, and a description thereof will be omitted.

Therefore, according to the second embodiment, the slave station data file 32a assigns the search priority and registers the slave station group number, and the slave station selecting means 32b sequentially assigns the priority according to the priority. Since the number of the slave station that can be connected to the other party's telephone terminal is selected from the slave station group with a higher rank, the priority is lower than that of a slave station that can be connected to a certain slave station group. A plurality of spare slave stations can be prepared in the slave station group to establish emergency satellite communication.

Embodiment 3 The third embodiment shows a case where a range for searching for a slave station group is set in advance in the slave station data file of the second embodiment. FIG. 6 shows a slave station data file 33 of the satellite communication DAMA system according to the third embodiment.
It is a block diagram of a. As shown in FIG. 6, in the slave station data file 33a, similar to the case of the second embodiment, the slave station group is registered with the order of priority for searching, but is communicated to another slave station in a remote place. However, since the range of the detour is actually limited, only the slave stations capable of bypassing the communication are enumerated and registered with the priority order, and the settings of the other slave stations are not registered. In a possible data area, "-" indicating that there is no slave station group to be searched is registered.

The operation of the thus configured satellite communication DAMA system according to the third embodiment will be described with reference to an operation sequence diagram shown in FIG. Also in the third embodiment, as in the first and second embodiments, the _first k-digit portion “B ₁ B ₂ B ₃ ... B _k ” in the telephone number of the telephone terminal 5 b in the public network 8 is the same as that of the telephone terminal 5 b. When the telephone terminal 5a calls the telephone terminal 5b as the other party's telephone terminal when the telephone terminal 5a calls the telephone terminal 5b, the master station 3 responds to the call request from the telephone terminal 5a based on the first k digits. Consider a case where a remote station is assigned to the remote station.

In this case, the user does not need to be aware of which sub-station is the destination sub-station, and from the telephone terminal 5a accommodated in the sub-station 2a to the telephone number "B ₁ " in the public network 8 of the telephone terminal 5b. B ₂ B ₃ ··· B _n "directly to dial the to specify the destination telephone terminal. That is, the telephone number "B ₁ B ₂ B ₃ ... B _n " is dialed from the telephone terminal 5a (SC31).
0).

In this case, by dialing the _first k digits "B ₁ B ₂ B ₃ ... B _k " of the dial number, "B ₁ ", "B ₂ ", "B ₃ ". .. " _Bk "
Are sequentially transmitted via the communication satellite 1 and the slave station 2a
A capture signal H indicating a request for capturing (establishing) a line for satellite communication with the other party's telephone terminal 5b is transmitted to the master station 3 via the communication satellite 1 (SC320). .

Here, in the master station 3 which has received the capture signal H, the slave station selecting means 33b selects the dial number "B ₁ " from the slave station data file 33a based on the capture signal H.
B ₂ B ₃ searches the slave station group corresponding to the · · · B _k ", to select the number of slave stations to be assigned to calls that from among the searched slave station group (SC320).

In this case, as shown in FIG. 6, a slave station group consisting of three slave stations having the first-priority slave station numbers 11, 12, and 13 is searched. Similarly to the above, the slave station selecting means 33b appropriately selects the number of a connectable slave station from the group of slave stations (SC330).

If there is no connectable slave station in the slave station group, a slave station group which is a search candidate having the next highest priority is searched for and a connectable slave station can be selected from the slave station group. Select the slave station number.

That is, the searched slave station numbers 11, 12, 1
If none of the three slave stations 3 can be connected,
The slave station selecting means 33b selects a connectable slave station number from the slave station group numbers (slave station numbers 14, 15, 16) of the next priority order.

However, if any of the slave stations in the slave station group cannot be connected, it indicates that there is no slave station group data to be searched in a data area where other slave station groups can be set. Since "-" is registered, there is no setting of a slave station group which is the next candidate for selection, so that the slave station selecting means 33b cannot search for a suitable slave station group, and thus searches for a slave station group. The process ends (SC340).

In this case, the master station 3 transmits a line connection disable signal N indicating that the line cannot be connected to the slave station 2a that has transmitted the capture signal H (SC350). The slave station 2a that has received the line connection disable signal N notifies the telephone terminal 5a that has made the call request that communication is disabled (SC360).

Therefore, according to the third embodiment, the slave station data file 33a registers only the number of the slave station that relays satellite communication to the telephone terminal to be selected. For this reason, only valid slave stations within a range in which communication detours are permitted are registered, and a slave station number that is meaningless even when connected, for example, when connection is not successful, can be excluded from selection candidates.

Embodiment 4 For example, in the case of limiting to satellite communication in Japan, it is convenient in Embodiments 1 to 3 that the dial number used as a reference for searching for a slave station is the area code of the destination telephone terminal. The fourth embodiment will be described as an improved example of the first embodiment for convenience of description.

FIG. 8 shows a satellite communication DAM according to the fourth embodiment.
FIG. 9 is an explanatory diagram of a slave station data file 34a in the A system. In FIG. 8, the slave station data file 34a includes the area code of the telephone number in the public network of the telephone terminal and the number of the search target slave stations to be connected when the telephone terminal of the area code is called. The slave stations are listed in correspondence with slave station groups that list slave station numbers.

For example, as shown in FIG. 8, the area code of the telephone number in the public network of a certain destination telephone terminal is “0”.
"3" indicates a slave station having a slave station number of 01, 02, 03, and "045" indicates a slave station number of 30, 31, 3
If the slave station No. 2 is further “06”, the slave stations whose slave station numbers are 31, 32, and 33 are grouped together as a search candidate slave station group and registered as a destination slave station group. ing.

The operation of the thus configured satellite communication DAMA system according to Embodiment 4 will be described with reference to an operation sequence diagram shown in FIG. Here, among the area codes of the telephone numbers in the public network 8 of the telephone terminal 5a, the master station 3 responds to the call of the telephone terminal 5a by calling the area code "0" of the telephone terminal 5d.
45 "will be described.

In this case, the user does not need to be aware of which sub-station is the destination sub-station, and from the telephone terminal 5a accommodated in the sub-station 2a to the telephone number “5” in the public network 8 of the telephone terminal 5d. 045-... Directly to specify the destination telephone terminal. That is, the telephone number "045..." Is dialed from the telephone terminal 5a (SC
410).

In this case, by dialing the area code “045”, the signals “0”, “4” and “5” constituting the telephone number are sequentially transmitted to the master station 3 via the communication satellite 1. And a slave station 2 for communication with the destination telephone terminal 5b.
A capture signal H indicating a request for capturing (establishing) a satellite line between a and the selected partner station is transmitted via the communication satellite 1 to the master station 3.
(SC420).

Here, in the master station 3 which has received the capture signal H, the slave station selecting means 34b selects a slave station corresponding to the area code "045" from the slave station data file 34a based on the capture signal H. The station group is searched, and the number of the slave station to be assigned to the transmission request is selected from among the several slave stations in the searched slave station group (SC425).

In this case, as shown in FIG. 8, a slave station group consisting of three slave stations having slave station numbers 30, 31, and 32 is searched. The number of a slave station to which connection can be made is appropriately selected from.

The master station 3 which has received the capture signal H transmitted from the slave station 2a has, for example, a slave station number "30".
If the slave station 2f is selected, the incoming notification signal S indicating that there is a communication request from the slave station 2a to the destination slave station.
Is transmitted to the slave station 2f (SC430).

The slave station 2b receiving the incoming notification signal S
Is an incoming response signal A as a response to the incoming notification signal S
Is returned to the master station 3 (SC440).

When receiving the incoming response signal A from the slave station 2f, the master station 3 sends a line designation signal C designating a line to be used in satellite communication between the slave station 2a and the slave station 2f.
The slave stations 2a and 2b are connected to each other by the satellite line T (SC45).
0). The operation up to the connection between the slave station 2a and the slave station 2b by the satellite line T is performed promptly when there is a dial of the area code "045" of the dial number.

Next, the slave stations 2a and 2b are connected to the communication satellite 1
Is connected by the satellite line T via the
Dial number “0” based on the previous dial, including “5”
.. "" Are sequentially transmitted from the slave station 2a to the slave station 2b via the satellite line T, and are transmitted to the telephone terminal 5b.
Are output to the slave station 2f, and the LS connected to the slave station 2f is output.
It is output to exchange 4b (SC460). Subsequent operations are the same as in the first embodiment, and a description thereof will be omitted.

According to the fourth embodiment, the unique number assigned to each telephone terminal is the area code of the telephone number in the public network of the telephone terminal. Eliminating the trouble of specifying the sub-station number of a station, determining the destination sub-station based on the area code, and dialing the telephone number in the public network of the destination telephone terminal with a simple operation Connection with the other party's telephone terminal is possible.

[0073]

According to the present invention, a source telephone call is transmitted from a first earth station on a source telephone terminal side to a control station via a communication satellite.
Control that sends outgoing call request of terminal and receives this outgoing request
The station selects the second earth station on the called telephone terminal side, and
In beauty second satellite DAMA system for allocating satellite communications line between the earth station, the control station, a number of relaying satellite communication to the telephone terminal and at least a portion of the unique number assigned to each telephone terminal An earth station data file registered in advance by associating the earth stations with a number of the earth station group in which the earth stations are grouped, and the earth station data file received via a communication satellite.
The earth station selected by selecting the number of the earth station to be connected to the called telephone terminal from among the earth station data file based at least in part on the unique number included in the calling request and said second earth station , Which eliminates the trouble of specifying the earth station number of the earth station to which satellite communication is to be relayed, which is called dialing a telephone number in the public network of the other party's telephone terminal. Connection to the other party's telephone terminal is possible with simple operation, and the satellite communication line
Communication between telephone terminals and line connection for it
Can be integrated into a satellite communication system without using
Simplification can be achieved.

Also, the first earth station on the source telephone terminal side
From the satellite to the control station via a communication satellite.
The control station that has transmitted the request
The second earth station on the side of the destination telephone terminal is selected, and the first and second earth stations are selected.
Satellite communication DAMA that allocates satellite communication lines between earth stations
In the system, the control station is provided for each telephone terminal.
At least part of the unique number
Several earth stations that relay satellite communications are grouped together
Earth station data registered in advance in correspondence with the earth station group number
File and the line acquisition received via a communication satellite.
Based on at least part of the unique number included in the request
From the earth station data file
Select the number of the earth station to be connected, and
Earth station selection means to be a second earth station;
One earth station transmits at least a part of the unique number to the
Transmission to the control station via a communication satellite in response to a line capture request
And the satellite communication line assigned by the control station
I will send the unique number of the other party's telephone terminal to the second earth station
The control station must receive all unique numbers.
Can start line allocation processing without
It is not possible to analyze all the symbols and extract the required number of digits.
The satellite communication line allocation process in a short time.
I can.

Further, the earth station data file is used for searching.
Prioritize and register the numbers of earth station groups,
The station selecting means sequentially assigns higher priority to each other according to the priority.
Earth stations that can be connected to the other party's telephone terminal from a group of earth stations
Select the number of the station, so connect within the number of a certain earth station group
Lower priority than possible earth stations
Emergency satellites with multiple spare earth stations in the earth station group
Communication can be established .

Since the unique number assigned to each terminal is the area code of the telephone number in the public network of the telephone terminal, the operation of designating the earth station number of the earth station to which satellite communication is relayed is performed. This eliminates the hassle of connecting to the telephone terminal of the other party by a simple operation of dialing the telephone number of the other party's telephone terminal in the public network.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a satellite communication DAMA system according to a first embodiment.

FIG. 2 is an explanatory diagram of a slave station data file 31a of the satellite communication DAMA system according to the first embodiment.

FIG. 3 is an operation sequence diagram of the satellite communication DAMA system according to the first embodiment.

FIG. 4 is an explanatory diagram of a slave station data file 32a of the satellite communication DAMA system according to the second embodiment.

FIG. 5 is an operation sequence diagram of the satellite communication DAMA system according to the second embodiment.

FIG. 6 is an explanatory diagram of a slave station data file 33a of the satellite communication DAMA system according to the third embodiment.

FIG. 7 is an operation sequence diagram of the satellite communication DAMA system according to the third embodiment.

FIG. 8 is an explanatory diagram of a slave station data file a of the satellite communication DAMA system according to the fourth embodiment.

FIG. 9 is an operation sequence diagram of the satellite communication DAMA system according to the fourth embodiment.

FIG. 10 is an explanatory diagram of a conventional satellite communication DAMA system.

FIG. 11 is an operation sequence diagram of a conventional satellite communication DAMA system.

[Explanation of symbols]

31a-34a Slave station data file, 31b-34b
Slave station selection means.

Claims (4)

(57) [Claims] 1. A communication from a first earth station on a source telephone terminal side .
Sends outgoing call request of source telephone terminal to control station via communication satellite
The control station that has received this call request
A second earth station on the side between the first and second earth station.
In satellite communication DAMA system for allocating satellite communications line, said control station, with at least a portion satellite communication to this telephone terminal unique number assigned to each telephone terminal
An earth station data file registered in advance by associating earth station group numbers in which a number of earth stations to be relayed are grouped together, and the unique information included in the transmission request received via a communication satellite Earth station selection means for selecting, from the earth station data file, the number of the earth station to be connected to the destination telephone terminal based on at least a part of the number, and selecting the selected earth station as the second earth station. A satellite communication DAMA system, comprising: 2. A communication from a first earth station on a source telephone terminal side.
A request to capture a satellite communication line link to the control station via a communication satellite
The control station that has transmitted and received this line capture request
Select a second earth station on the talk terminal side, and select the first and second earth stations.
Satellite communication DAMA system that allocates satellite communication lines between stations
In the system, the control station is provided for each telephone terminal.
At least part of the unique number and satellite for this phone terminal
An earth that combines several earth stations that relay communications into a group
Earth station data file registered in advance in correspondence with station group numbers
File and the line acquisition request received via a communication satellite.
Based on at least a part of the unique number included in
Connect to the other party's telephone terminal from the earth station data file
Select the number of the earth station to be used, and
Earth station selection means to be an earth station of
The earth station stores at least a part of the unique number in the line capture.
Send to the control station via a communication satellite in response to a capture request,
According to the satellite communication line allocated by the control station, the second
Sends the unique number of the other party's telephone terminal to the earth station.
Satellite communication DAMA system to butterflies. 3. An earth station data file according to claim 1, wherein
Prioritize and register the number of the earth station group, and
The earth station selecting means may assign the priority in order according to the priority.
A place that can be connected to the other party's telephone terminal from a group of high earth stations
2. The method according to claim 1 , wherein the number of the base station is selected.
3. The satellite communication DAMA system according to 2. 4. The satellite communication DAMA system according to claim 1, wherein the unique number assigned to each telephone terminal is an area code of a telephone number in a public network of the telephone terminal.