JP6533033B2 - Communications system - Google Patents

Description

  The present invention relates to a communication system comprising a terminal that can also communicate as a narrowband terminal.

  The conventional regional disaster prevention radio system has a control station and a slave station, and the control station transmits simultaneous commands to the slave stations, and the slave stations receiving the simultaneous commands broadcast on the basis of the contents of the simultaneous commands. System (see Patent Document 1).

JP 2005-101727 A

  However, since the communication band of the slave station in the conventional regional disaster prevention radio system is a narrow band, when the packet transmitted from the control station to the slave station has a large capacity such as video and audio data, it is efficient. I could not communicate.

  Moreover, in the conventional regional disaster prevention radio system, packet communication between the control station and the slave station in the case where the slave station is a terminal capable of communicating as an LTE (Long Term Evolution) terminal and a narrow band terminal has not been assumed.

  The present invention has been made in consideration of the above problems, and provides a communication system that optimizes a communication path in packet communication using a terminal that can communicate as an LTE terminal and a narrowband terminal. To aim.

The communication system according to the present invention determines the transmission destination of the packet based on the characteristics of the packet received from the outside, and includes a control unit included in the communication device installed in the control station.
An eNodeB (evolved Node B) to which a terminal capable of communicating as a long term evolution (LTE) terminal and a narrowband terminal wirelessly connects, and a base station to which the terminal wirelessly connects, the collective command from the control station When the communication apparatus broadcasts to the terminal on the basis, the control unit corresponds to the IP address included in the packet when the capacity of the packet is smaller than a predetermined threshold as the characteristic. the ID of the terminal to be acquired from a table included in the communication device, appends the ID in the packet, and converts the data format which the terminal can receive a packet the ID is additionally written before Symbol base station It is characterized by transmitting.

  According to the communication system of the present invention, by determining the transmission destination of the packet based on the characteristics of the packet, it is possible to optimize the communication path in the packet communication using the terminal capable of communicating as the LTE terminal and the narrowband terminal. . Also, by judging packets based on the packet capacity and transmitting them to the EPC, large-capacity packets can also be transmitted appropriately.

It is an explanatory view of a communication system concerning an embodiment of the present invention. It is an explanatory view of a table with which a storage part is provided. It is explanatory drawing about the process sequence of a communication system.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a communication system 10 according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of the table 108 provided in the storage unit 106.

<Description of Configuration of Communication System 10>
The communication system 10 includes terminals 20a to 20c, a communication device 100, an EPC (Evolved Packet Core) 200, an eNodeB (evolved Node B) 202, a base station 300, and an application server 400.

  The terminals 20 a to 20 c (hereinafter, appropriately referred to as “terminal 20” as appropriate) are terminals that can communicate as a narrow band terminal and an LTE terminal. The communication method in the case of communicating the terminal 20 as a narrow band terminal is a narrow band digital communication method. When communication is performed by the narrow band digital communication system, it can function as a digital broadcasting device whose operating frequency band is 60 MHz or a digital mobile radio whose operating frequency band is 260 MHz. Moreover, the communication system in the case of communicating the terminal 20 as an LTE terminal is a communication system based on the communication standard defined by 3GPP (Third Generation Partnership Project) which is a standard group.

  The communication device 100 includes a control unit 102, a communication unit 104, and a storage unit 106. Communication device 100 is generally provided in a control station. The control unit 102 is mainly a control unit that determines control of capacity, type, and the like as characteristics of packets transmitted from the application server 400, and performs control for transmission to the terminal 20. The communication unit 104 performs communication processing between the terminal 20 and the application server 400. The storage unit 106 includes a table 108.

  The table 108 stores an IP address for identifying the terminals 20a to 20c as LTE terminals or narrowband terminals, and an identification code (ID). In the table 108, for the terminal 20a, x.x.x.x is stored as an IP address and Ia is stored as an ID. Similarly, for the terminals 20b and 20c, y.y.y. y and z.z.z.z are stored as IP addresses, and Ib and Ic are stored as IDs.

  The EPC 200 is a core network. The eNodeB 202 is a base station to which the terminal 20 wirelessly connects as an LTE terminal. The base station 300 is a base station to which the terminal 20 wirelessly connects as a narrowband terminal.

  The application server 400 is an application server that provides the terminal 20 with moving images, audio data, and the like.

<Description of Operation of Communication System 10>
Next, the operation of the communication system 10 will be described with reference to FIG. FIG. 3 is an explanatory diagram of a processing procedure of the communication system 10.

  Hereinafter, a case where the terminal 20a communicates with the application server 400 will be described. In the case where the terminals 20b and 20c communicate with the application server 400, the processing procedure is the same as in the case of communication with the terminal 20a, and thus the description thereof will be omitted.

  First, a packet P is transmitted from the application server 400 to the communication device 100 (step S1). The packet P transmitted from the application server 400 to the communication apparatus 100 includes x.x.x.x as the IP address of the terminal 20a.

  The control unit 102 of the communication apparatus 100 receives the packet P via the communication unit 104, and confirms the capacity of the packet P (step S2). When the capacity of the packet P is larger than the threshold C (Yes in step S2), the packet P is transmitted to the terminals 20a to 20c via the communication unit 104 and the EPC 200 without converting the packet P as it is (step S3).

  Each of the terminals 20a to 20c receives the packet P, acquires an IP address from the packet P, and collates with its own IP address (step S4).

  At the terminal 20a, the IP address acquired from the packet P is x.x.x.x, and matches the own IP address, so the packet P is stored in the storage unit (not shown) of the terminal 20a (step S5). In the terminals 20b and 20c, the received packet P is discarded.

  On the other hand, when the capacity of the packet P is smaller than the threshold C (No at step S2), Ia is added to the packet P as an ID, and the added packet P is converted to a data format that can be received by the terminals 20a to 20c. The converted data is transmitted to the terminals 20a to 20c via the unit 104 and the base station 300 (step S6).

  Each of the terminals 20a to 20c receives data, acquires an ID from the data, and collates with its own ID (step S7).

  In the terminal 20a, since the ID acquired from the data is Ia and matches with its own ID, processing is performed based on the data (step S8). As a process, for example, the terminal 20a makes a voice notification.

  The communication system 10 includes a control unit 102 that determines the transmission destination of the packet P based on the characteristics of a terminal 20 that can communicate as an LTE terminal and a narrowband terminal, and the packet received from the outside; The control unit 102 transmits the packet P to the eNodeB 202 or the base station 300 based on the characteristics, and includes an eNodeB 202 to be connected and a base station 300 to which the terminal 20 wirelessly connects.

  Further, the characteristic is at least one of the capacity and the type of the packet P. Furthermore, the control unit 102 transmits the packet P to the base station 300 when the capacity of the packet P is smaller than a predetermined threshold.

  In the communication system 10, by determining the transmission destination of the packet P based on the characteristics of the packet P, it is possible to optimize a communication path in packet communication using a terminal that can communicate as an LTE terminal and a narrowband terminal. Also, by judging the packet P based on the packet capacity and transmitting it to the EPC 200, a large capacity packet can be appropriately transmitted.

  The present invention is not limited to the above-described embodiment, and it goes without saying that various configurations can be adopted without departing from the scope of the present invention.

  In the above embodiment, although the packet received by the communication device 100 is transmitted from the application server 400, if the packet is transmitted to the communication device 100, the packet is limited to the packet transmitted from the application server 400. Alternatively, the packet may be transmitted from other than the application server 400.

  Further, in the above embodiment, the control unit 102 determines based on the packet capacity as the characteristic of the packet P. However, the present invention is not limited to this. For example, the determination may be made based on the type of packet and the throughput.

DESCRIPTION OF SYMBOLS 10 ... Communication system 20a-20c ... Terminal 100 ... Communication apparatus 102 ... Control part 104 ... Communication part 106 ... Storage part 108 ... Table 200 ... EPC
202 ... eNodeB
300 ... base station 400 ... application server

Claims (1)

A control unit included in a communication apparatus installed in the control station, determining a transmission destination of the packet based on characteristics of the packet received from the outside;
ENodeB (evolved Node B) to which a terminal that can communicate as an LTE (Long Term Evolution) terminal and a narrowband terminal wirelessly connect;
A base station to which the terminal wirelessly connects;
Equipped with
When the communication device broadcasts to the terminal based on the simultaneous command from the control station,
When the capacity of the packet is smaller than a predetermined threshold , the control unit acquires, as the characteristic, an ID of the terminal corresponding to an IP address included in the packet from a table included in the communication device. communication system appends the ID to the packet, and converts the data format which the terminal can receive the ID before Symbol base station and transmits the recordable packets.

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