JP3581910B2 - Broadcasting system using radio waves - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention eliminates the need for calling means in the network when starting communication with the information receiving means of broadcast communication, reduces the number of procedures in the network, and reduces the amount of network resources such as signal transmission means and switches used. The present invention relates to a connection method for connecting an information transmitting means and an information receiving means via an optimal route, and enabling the performance of network resources such as a signal transmitting means, an exchange and an information transmitting means to be used for other purposes.
[0002]
[Prior art]
Conventionally, in such a communication device and processing method, the information transmitting means or the branching means holds the telephone numbers of all the information receiving means, has a calling means, and broadcasts the information transmitting means to the information receiving means. To do so, transmission is started after calling from the information transmitting means to all the information receiving means. When the information receiving unit is called, the information transmitting unit or the branching unit checks whether or not the terminal can be connected to the information receiving unit. The terminal that cannot be connected is added after the communication is started. Alternatively, the telephone number of the information receiving unit is registered in the information transmitting unit or the branching unit, and transmission is started after calling all of the information receiving units and the information transmitting units that may be connected from the branching unit. In addition, when the information transmitting means and the information receiving means are called, if the information transmitting means cannot be connected, the information transmitting means is called again, and the unsuccessfully connected terminals are added after the communication starts. Further, only one branching means corresponding to the telephone number of the information transmitting means and each information receiving means are individually connected by the same route as a general telephone.
[0003]
Conventionally, as in the example of the conventional communication sequence of FIG. 1 and the example of the conventional network configuration of FIG. 2, the information transmitting means 5 calls the exchange 2 to make a connection, and the exchange 2 calls the information receiving means 4. The information receiving means 4 responded to the exchange 2 to make a connection, the exchange 2 responded to the information transmitting means 5, and the information transmitting means 5 instructed the exchange to start a call.
[0004]
[Problems to be solved by the invention]
Such conventional communication devices and processing methods have the following disadvantages. (1) Since the information transmitting means or the branching means has the calling means, the cost of the device and the like increases. (2) It is necessary to register the telephone number of the information receiving means in the information transmitting means or the branching means. (3) There are many control procedures for connection in order to confirm whether connection to the information transmitting means or the information receiving means is possible, and to make a recall or add. (4) Currently, intra-network calls are not determined by international standards, and it is difficult to design according to standardization. (5) Intra-network calls for broadcast communication temporarily occupy network resources such as data in which calling means and information receiving means are registered, resulting in poor use efficiency. (6) The information transmitting means and the information receiving means may be connected using an inefficient route.
[0005]
An object of the present invention is to transmit a call instruction to an information receiving unit using broadcast radio waves when transmitting a broadcast from the information transmitting unit to the information receiving unit as described above. The receiving means makes a call to the information transmitting means or the branching means and connects the line, thereby reducing the amount of network resources such as signal transmission means and switching equipment used for line connection, and eliminating the need for calling means in the network. It is another object of the present invention to reduce the number of control procedures for connection with the calling means of the information transmitting means or the branching means, and to connect the information transmitting means and the information receiving means via an optimal route.
[0006]
[Means for Solving the Problems]
According to the present invention, the radio wave receiving means of the information receiving means is provided with a radio wave detecting unit for monitoring the radio wave transmitted from the radio wave transmitting means in the telecommunication network, and whether or not a call instruction directed to the information receiving means is transmitted. To monitor and detect radio waves. When a call instruction is received, a call from the information receiving means to the information transmitting means or the branching means makes it unnecessary for the network service control means, the information transmitting means or the branching means to register a telephone number in the information receiving means, and the information transmitting means. Alternatively, a control procedure for connection with the calling means of the branch means is not required. When the communication device is operated by the information receiving means in this form, the information receiving means does not need to be always in a communicable state, but only in a state in which only a call instruction using radio waves can be received. When the line is connected, the communication device of the information receiving means is operated so that the information transmitted from the information transmitting means can be received.
[0007]
Further, the network service control means has means for transmitting a transmission instruction of a call instruction to the radio wave transmission means when a communication start time is reached or a request for transmitting a call instruction from an information transmission means or the like is provided. No calling means is required, the number of connection control procedures is reduced, and the occupation of resources temporarily used for the calling procedure due to a call in the network is prevented.
[0008]
A means for deriving an optimal path from the information transmitting means to the information receiving means in the telecommunication network; and a method of copying information, superimposing information, or superimposing information when three or more lines are gathered on a line connection path. A branching means for insertion is provided, and the exchange connects a path to another exchange by an instruction obtained by an inquiry and a response to the network service control means, and connects an information transmitting means and an information receiving means by an optimal path. . The radio wave transmitting means transmits a call instruction to the information receiving means by applying amplitude modulation to a pilot signal of a half frequency of the sub-carrier signal indicating that stereo broadcasting in a gap of the radio wave of the FM broadcast is being performed. Keep the bandwidth used for
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 3 shows a configuration example of a network for realizing the present invention. 1 is a network service control means, 2 is 1, 2, 2,..., 2 i is an exchange, 3 is a radio wave transmitting means such as a broadcasting station, 4 is 1, 4, 2,. .., 6 k are signal transmission means, 7, 1, 2,..., 7 n Are the information transmission means such as a common line signal network, 8 and 9 1, 9-2,..., 9 I-1 and 9 are the subscriber connection means such as a subscriber line or the information transmission means. .., 10 is a branching means, 11 is a 11,11 2,..., 11 is a radio wave receiving means, and 12 is a radio wave broadcasting means.
[0010]
FIG. 4 is an example of the communication order according to the present invention. The operation of the present invention will be described below with reference to FIGS. In addition to the information transmitting means, the information transmitting means 5 requests the network service control means 1 to transmit a calling instruction to the information receiving means 4 through the subscriber connecting means or the information transmitting means 9 and the signal transmitting means 6. Means are provided for sending the means, the reception identifier, the information transmission time, and the method of reconnection when disconnected. The network service control means 1 receives a request to send a call instruction from the information transmitting means 5 or the like, or, at a predetermined time, sends the radio wave transmitting means 3 to the information receiving means 4 through the subscriber connection means or the information transmitting means 8. Means for sending a broadcast request for a call instruction to the telephone and means for leading a path from the information transmitting means 5 to the information receiving means 4 and sending a connection instruction to the exchange 2 are provided. The exchange 2 is provided with means for providing a route to an information transmission means with another exchange by an instruction obtained by an inquiry and response with the network service control means 1, and a branching means 10. Further, there are provided an information transmitting means 5, an information receiving means 4 which has accepted a call, and means for connecting the above-mentioned route. Stereo broadcasting (as disclosed in Naohisa Goto and Hiroyuki Arai, "Radio Engineering" (4-5-18), Shokodo, pp. 136-137) It is also possible to transmit data different from broadcast by applying amplitude modulation to a pilot signal of half the frequency of the sub-carrier signal, which has already been put to practical use in the United States as a pager calling or information service. This is called pilot signal amplitude modulation means. The radio wave transmitting means 3 receives a broadcast request for a call instruction to the information receiving means 4 from the network service control means 1 through the subscriber line or the information transmitting means 8 and transmits the request to the information receiving means 4 using the pilot signal amplitude modulation means. Means are provided for sending call instructions. In addition to the above, known techniques can be used as the radio broadcast means 3. For example, Kazuo Takemoto and Masaki Watanabe, “Current Situation and Trends of FM Multiplex Broadcasting,” Broadcasting Technology, Vol. 47, no. 7, Kenroku Shuppan (Hei 6) p684, Toru Kuroda, Masayuki Takada, Tadashi Isobe, and Osamu Yamada, "Mobile Reception FM Multiplex Transmission System", NHK Giken R & D, No. 32, (Heisei 6-8) pp. As described in 1-13, a call instruction is sent to the information receiving means 4 by an FM multiplex broadcast method in which a signal different from a stereo audio signal is superimposed on the same frequency band as an existing FM broadcast and transmitted. The information receiving means 4 includes a means for receiving a call instruction from the network service control means 1 and a means for calling the information transmitting means 5 or the branching means 10 and connecting the line via the exchange 2. . The signal transmission unit 6 includes a unit for transmitting a signal including a reception identifier transmitted from the information transmission unit 5 to the network service control unit 1, a transmission time of the information, and a method of reconnection when disconnected. The information transmitting means 7 is provided with means for transmitting the information contents broadcast from the information transmitting means 5 to the information receiving means 4. The subscriber line or information transmitting means 8 is provided with means for transmitting a call instruction to the information receiving means 4 from the network service control means 1 to the radio wave transmitting means 3. The subscriber connection means or the information transmission means 9 includes a means for transmitting a request for the information transmission means 5 to send a call instruction from the radio wave transmission means 3 to the information reception means 4, and a method for transmitting information from the information transmission means 5 to the information reception means 4. Means for transmitting the information content to be broadcast is provided. The branching unit 10 branches the connection when three or more connections are required between the information receiving unit 4 and the information transmitting unit 5 that have received a call or received a connection instruction from the network service control unit 1. Means are provided for performing When it becomes necessary to send information, the information transmitting means 5 requests the network service control means 1 to transmit a call instruction to the information receiving means 4. As shown in FIG. 4, the network service control means 1 receives a request for transmission of a call instruction or, at a predetermined time, sends the radio wave transmitting means 3 to the information receiving means 4 through the subscriber connection means or the information transmitting means 8. And sends a broadcast request (S1) for a call instruction to the user, and derives a path from the information transmitting means 5 to the information receiving means 4. Upon receiving the broadcast request, the radio wave transmitting means 3 sends a call instruction (S2) to the information receiving means 4 using the pilot signal amplitude modulating means. Upon receiving the call instruction, the information receiving means 4 calls the information transmitting means 5 or the branching means 10 and connects the line via the exchange 2 (S3). At this time, the network service control means 1 derives a path from the information transmitting means 5 to the information receiving means 4 which is effective for use of network resources and which reduces the connection delay or reduces the propagation delay. In response to an inquiry (S4) obtained from the inquiry and response to the first switch, a route is provided to the information transmission means with another exchange, and the branching means 10 receives a call or receives a connection instruction from the network service control means 1. When three or more connections are required between the information receiving means 4 and the information transmitting means 5, the connection is branched (S5).
[0011]
【The invention's effect】
As described above, the calling instruction is transmitted to the information receiving means using the gap of the radio wave of the FM broadcast, and the information receiving means calls the information transmitting means or the branching means and connects the line. While maintaining the required bandwidth, the amount of network resources such as signal transmission means and exchanges used for line connection can be reduced as compared with the conventional method, and the calling means in the network provided in the information transmission means or the branching means. And control procedures for connection can be reduced. At this time, since the network service control means 1 sends a connection instruction only to the exchange which can make a connection effective by selecting a route, the network service control means 1 makes a call to all conventional connection-possible terminals and information transmission means. The number of instructions and confirmations of the line connection operation can be reduced as compared with the method of starting transmission from. In addition, even when the switching network is congested or the like, a call instruction is transmitted using a broadcasting band which is not normally used, so that the call instruction can be transmitted to the information receiving means.
[0012]
As described above, in particular, a pilot signal having a frequency of 1/2 of the sub-carrier signal indicating that stereo broadcasting is performed in a gap between radio waves of FM broadcasting is amplitude-modulated, and information is transmitted by calling from the information receiving means. By connecting the line to the transmitting means or the branching means, the amount of network resources to be used can be reduced while maintaining the band used for broadcasting, so that no calling means in the network is required and the connection control procedure can be reduced.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a conventional communication order.
FIG. 2 is a diagram illustrating a configuration example of a conventional network.
FIG. 3 is a diagram showing a configuration example of a network according to the present invention.
FIG. 4 is a diagram showing an example of a communication order according to the present invention.
[Explanation of symbols]
1, 2 of the network service control means 2, i of the two,..., 2 i Exchange 3 of the radio wave transmitting means 4, 1, 2, 4,..., J of the information transmitting means 5 1 of the information transmitting means 6 , 6, 2,..., 6 k Signal transmission means 7, 1, 7 2,..., 7 n Information transmission means 8, 9, 1, 9, 2,. .., 10 of the subscriber connection means or information transmission means 10, n of the branching means 11, 1, 11, 2,. Radio broadcasting means

Claims (6)

In a telecommunications network having an information receiving means and an information transmitting means, and connecting the information receiving means and the information transmitting means by a line at the start of communication and transmitting information from the information transmitting means to the information receiving means,
Network service control means for issuing a call instruction to a plurality of information receiving means at a broadcast destination when a start time of the broadcast communication is reached or when a call instruction is received from an information transmitting means or a means for requesting information transmission,
Radio wave transmitting means for receiving the call instruction from the network service control means and transmitting the call instruction using radio waves,
Receiving a call instruction from the radio wave transmitting means, having a radio wave receiving means provided in the information receiving means,
The radio wave transmitting means transmits a call instruction to the radio wave receiving means provided in the information receiving means, a plurality of information receiving means of a broadcast destination call the information transmitting means and connect a line, A broadcast communication method using radio waves, wherein the information transmitting means transmits information to each broadcast destination. The telecommunications network has a branching means for copying information, superimposing information or inserting information when three or more lines are gathered on a line connection path,
2. A broadcast system using radio waves according to claim 1, wherein the branching means copies information, superimposes information, or inserts information. The network service control means further includes means for deriving a path from the information transmitting means to the information receiving means and transmitting a connection instruction to the exchange,
The network service control means derives a connection path from the information transmission means to the information reception means, and the exchange establishes a connection path in the information transmission means with another exchange according to an instruction obtained by inquiry and response with the network service control means. The broadcast communication method using radio waves according to claim 1, wherein: Create a receiving identifier that identifies a plurality of information receiving means from each other,
The radio wave transmitting means transmits a reception identifier together with the call instruction, and the information receiving means calls the information transmitting means or the branching means connected to the information transmitting means and connects the line when the received identifier and the own identifier match. A broadcast communication system using radio waves according to claim 1, wherein: Create a transmission identifier to identify a plurality of information transmission means from each other,
The radio wave transmitting means transmits a transmission identifier together with the call instruction, and the information receiving means makes a call to the information transmitting means matching the transmission identifier or the branching means connected to the information transmitting means and connects the line. A broadcast communication system using radio waves according to claim 1. A means for calling the information transmitting means or a connection branching means for the information receiving means to connect the line, and a half of a subcarrier signal indicating to the radio wave transmitting means that the stereo broadcast of the FM radio wave gap is being performed. Radio wave broadcasting means for transmitting a call instruction to the information receiving means by applying amplitude modulation to the pilot signal of the frequency of
The radio broadcast means transmits a calling instruction to the information receiving means by applying amplitude modulation to a pilot signal having a frequency of 1/2 of the sub-carrier signal indicating that stereo broadcasting in a gap between radio waves of FM broadcast is being performed, 2. The broadcast communication system using radio waves according to claim 1, wherein the information receiving means makes a call to the information transmitting means or the connection branching means to connect the line.

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