JPH05316256A - Broadcast communication switching device - Google Patents

Abstract

PURPOSE:To make emergency multi-address(M-A) information preferentially income to the communication terminal at the subscriber side M-A communication switching device to be used in the batch M-A communication network having both 1:1 communication line and M-A communication line. CONSTITUTION:In the M-A communication switching device having an M-A transmission terminal 1 and an M-A communication switching section 2, when an emergency M-A direction is detected by an M-A communication switching section, an emergency M-A direction setting section 4 setting the emergency M-A direction is added to the M-A transmission terminal and an emergency M-A direction detecting signal is added to the M-A communication switching section. In transmitting emergency M-A information, the transmission terminal sends an emergency M-A direction from the emergency M-A direction setting section. The M-A communication switching section 4 switches the line to the M-A communication even though the 1:1 communication line is busy when emergency M-A direction detecting signals are applied from an emergency M-A direction detecting section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast communication switching device used for simultaneous broadcast in a communication network in which a 1: 1 communication line and a broadcast communication line coexist.

For example, a broadcast communication line such as a satellite communication line
In a communication network in which 1: 1 communication lines coexist, in the event of an emergency such as a disaster, the sender sends emergency broadcast information to the specified subscribers via the broadcast communication line. At this time, it is necessary that the emergency broadcast information be preferentially received by the communication terminal on the subscriber side.

[0003]

2. Description of the Related Art FIG. 4 is a diagram showing an example of a network configuration diagram, and FIG. 5 is a configuration diagram of a conventional example of a broadcast transmission terminal and a broadcast communication switching section in FIG. 4, where (a) is a broadcast transmission terminal. , (B) is a broadcast communication switching unit. Further, FIG. 6 is an operation explanatory diagram of FIG.

The operation of FIG. 4 will be described below with reference to FIGS. Note that the broadcast communication switching devices 2a and 2b have the same configuration as in FIG. 5 (b), but in FIG. 4, a and b are added to identify the respective broadcast communication switching devices.

Of the lines 61 to 63 shown in FIGS. 4 and 5,
The solid line shows the data communication line and the dotted line shows the control line.
These two lines may be physically the same.
First, as shown in FIG. 5 (a), the broadcast transmission terminal 1 has a data communication section 11 and a control section 12, and the data communication section is a section for transmitting data such as voice and images. Is a part that generates signals for broadcast destination instruction, response unnecessary instruction, broadcast start notification, etc. and sends them to the subscriber side.

As shown in FIG. 5B, the broadcast communication switching devices 2a and 2b have a switching portion 21 and a control portion 22, and the control portion 22 is 1:
1 communication line priority, broadcast communication line priority, first-come-first-served line priority 3
Of the two priority modes, any priority mode can be set, and a control signal in consideration of the priority order is transmitted. Further, this switch is connected to the broadcast transmission terminal 1 via the broadcast transmission line 62, the broadcast communication network, and the broadcast transmission line 61.

The switching section 21 is normally switched to the 1: 1 communication line side, but performs a switching operation according to a control signal from the control section 22. Next, the communication terminal 3a becomes the broadcast communication switch 2
a, 1: 1 communication is performed with the communication terminal 3c via the 1: 1 communication line 64, and the broadcast communication line priority is set in the control part in the broadcast communication switch.

Now, when the control section 22 detects that a broadcast incoming notification from the broadcast transmitting terminal 1 is inputted via the broadcast transmitting line 61, the broadcast communication network, and the broadcast transmitting line 62, the communication is carried out. Even if the terminal 3a is in 1: 1 communication with the communication terminal 3c (individual communication), the broadcast communication line priority is set, so the control signal for forcibly switching to the broadcast communication line is switched. It is sent to 21 (see Figure 6-).

For this reason, the switching part performs a switching operation corresponding to the applied control signal to connect the communication terminal 3 to the broadcast communication line, and the communication terminal 3a receives the broadcast information from the broadcast transmitting terminal. You can

If the 1: 1 communication is not performed, the broadcast information can be received without operating the switching part 21 (
(See Figure 6-).

[0011]

When the broadcast communication switch 2a, 2b is set to the 1: 1 communication line priority mode, the emergency broadcast information is interrupted and received by the communication terminals 3a, 3b. Is impossible.

Also, when the broadcast communication line priority mode is set, even if important communication is performed on the 1: 1 communication line, the broadcast communication is performed for non-urgent broadcast information (for example, notification). Switch to the line and disconnect important communication. Furthermore, in the case of the first-come-first-served line priority, when switching to the 1: 1 communication line, emergency broadcast cannot be received.

That is, when performing the emergency broadcast communication, there is a problem that the emergency broadcast information may not be preferentially received at the communication terminal on the subscriber side. An object of the present invention is to enable emergency broadcast information to be preferentially received by a communication terminal on the subscriber side.

[0014]

FIG. 1 is a block diagram showing the principle of the present invention. In the figure, 1 is a broadcast transmission terminal for transmitting broadcast information to a broadcast line, 2 has a function of setting a priority mode of the line, and the communication terminal is one of the 1: 1 communication line and the broadcast communication line. , A broadcast communication switching unit connected to a communication line in the set priority mode. Reference numeral 4 is an emergency broadcast instruction setting portion for setting an emergency broadcast instruction to the broadcast transmitting terminal, and 5 is an emergency broadcast instruction detection that immediately sends a switching control signal when an emergency broadcast instruction is detected by the broadcast communication switching unit. It is a part.

Then, when the broadcast transmitting terminal transmits the emergency broadcast information, the broadcast transmitting terminal transmits the emergency broadcast instruction from the emergency broadcast instruction setting portion, and the broadcast communication switching unit causes the emergency broadcast instruction detecting portion. Even when the 1: 1 communication line is in use when the emergency broadcast instruction detection signal from is applied, it is configured to forcibly switch to the broadcast communication line.

[0016]

According to the present invention, even if the first-arrival line priority is set in the broadcast communication switching unit, the emergency broadcast instruction detecting unit detects the emergency broadcast instruction from the broadcast transmitting terminal and transmits the emergency broadcast instruction detection signal. If sent to the broadcast communication switching unit, the broadcast communication switching unit confirms this detection signal and forcibly switches to the broadcast communication line side.

That is, even if the broadcast communication switch is switched to the 1: 1 communication line side, it is forcibly switched to the broadcast communication line and the communication terminal is connected to the broadcast communication line. As a result, the emergency broadcast information can be preferentially received by the communication terminal on the subscriber side.

[0018]

FIG. 2 is a block diagram of an embodiment of the present invention of a broadcast transmission terminal and a broadcast communication switching unit, in which (a) is a broadcast transmission terminal and (b) is a broadcast communication switching unit. FIG. 3 is an explanatory diagram of the operation of FIG.

The same reference numerals denote the same objects throughout the drawings. The operation of FIG. 2 will be described below with reference to FIG. 3, but the parts described in detail above will be briefly described, and the present invention will be described in detail.

First, the control section 22 in the broadcast communication switching section
As described above, the priority of the line is set, and the control signal for forcibly switching to the line with the higher priority is sent to the switching portion 21, but the newly provided emergency broadcast instruction detection When a detection signal for detecting an emergency broadcast instruction from the portion 5 is applied, the control signal for switching to the broadcast communication line with the highest priority is provided to the switching portion.

When sending the emergency broadcast information from the broadcast information transmitting side to the designated subscriber, the emergency broadcast instruction setting portion 4 added to the broadcast transmitting terminal generates an emergency broadcast instruction to control the portion 12. To send to. Therefore, the control unit 12 sends an emergency broadcast instruction to the desired subscriber via the broadcast communication line 61.

Further, the subscriber of the communication terminal 2a is controlled by the control unit 22.
The 1: 1 communication line priority mode is set in, and individual communication is performed via the 1: 1 communication line. However, this emergency broadcast instruction is detected by the emergency broadcast instruction detection section 5 added to the control section 22. Then, it is assumed that the detection result is sent to the control section 22.

The control unit checks whether the detection result is an emergency broadcast or a normal broadcast (hereinafter, referred to as a normal broadcast), and when it is confirmed that it is an emergency broadcast instruction, further, the individual communication is currently in progress. Check whether it is (1: 1 communication).

If it is determined by this check that individual communication is still being performed, it is confirmed that the priority of the emergency broadcast instruction is the highest, and the line is switched to the broadcast communication line side even during communication to perform emergency broadcast. Receives the broadcast information (see Figure 3-).

However, if the tick result is not the emergency broadcast instruction but the normal broadcast instruction, the individual communication currently being performed is continued, so that the switch to the normal broadcast cannot be performed. However, if individual communication is completed, it is possible to switch to normal broadcast (see Figure 3-).

That is, unnecessary interruption of the broadcast communication can be prevented and the broadcast communication information can be always received at the receiving terminal when necessary.

[0027]

As described above in detail, according to the present invention, it is possible to preferentially receive the emergency broadcast information at the communication terminal on the subscriber side.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

2A and 2B are configuration diagrams of a broadcast transmission terminal and a broadcast communication switching unit according to an embodiment of the present invention, in which FIG. 2A is a broadcast transmission terminal and FIG.

FIG. 3 is an operation explanatory diagram of FIG. 2;

FIG. 4 is a diagram showing an example of a network configuration diagram.

5 is a block diagram of a conventional example of a broadcast transmission terminal and a broadcast communication switching unit in FIG. 4, where (a) is a broadcast transmission terminal and (b) is a broadcast communication switching unit.

FIG. 6 is an operation explanatory diagram of FIG. 5;

[Explanation of symbols]

1 Broadcast transmission terminal 2 Broadcast communication switching section 3 Communication terminal 4 Emergency broadcast instruction setting section 5 Emergency broadcast instruction detection section

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical indication H04L 12/18

Claims (1)

[Claims] 1. A communication network in which a 1: 1 communication line and a broadcast communication line coexist, wherein a broadcast information transmission side is provided with a broadcast transmission terminal (1) for transmitting broadcast information to the broadcast line. Broadcast communication that has a function of setting the priority mode of the line on the subscriber side and connects the communication terminal (3) to the communication line of the set priority mode of the 1: 1 communication line and the broadcast communication line. In the broadcast communication switching device having a switching unit (2), an emergency broadcast instruction setting part (4) for setting an emergency broadcast instruction is set in the broadcast transmitting terminal, and the emergency broadcast switching unit is provided in the broadcast communication switching unit. Emergency broadcast instruction detection part that sends an emergency broadcast instruction detection signal when a broadcast instruction is detected
(5) is added respectively, the broadcast transmitting terminal, when transmitting the emergency broadcast information, transmits the emergency broadcast instruction from the emergency broadcast instruction setting part, and the broadcast communication switching unit causes the emergency communication switching part to transmit the emergency broadcast information. When the emergency broadcast instruction detection signal from the broadcast instruction detection portion is applied, the configuration is such that the broadcast communication line is forcibly switched to even if the 1: 1 communication line is in use. Communication switching device.