KR100201419B1 - The cell broadcasting system and service method thereof - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Single Professional Service (SMS) Technology

2. The technical problem to be solved by the invention

A cell broadcast system and a cell broadcast service method for performing a cell broadcast service using a cell broadcast service gateway are provided.

3. Summary of Solution to Invention

The present invention provides a cell broadcast center for transmitting a command after performing cell broadcast message processing; A cell broadcast service gateway that interprets and executes a command, converts a protocol type interworking with the cell broadcast center into an interprocessor communication type, and transmits a cell broadcast message; A base station / node matching device for routing cell broadcast messages; A base station controller for receiving and transmitting a cell broadcast message; And a base station receiving the cell broadcast message and broadcasting it to the mobile terminal.

4. Important uses of the invention

Used for cell broadcast service.

Description

Cell Broadcasting System and Cell Broadcasting Service Method

The present invention provides a cell broadcast system and cell broadcast service method for performing a cell broadcast service, which is a type of short message service, using a mobile communication network such as a cellular network or a personal communication (PCS) network. It is about.

The terms used in the present invention are defined as follows.

Short-term professional service (SMS) utilizes the store and forward function of the message center and the code division multiple access (CDMA) access / paging and call channels to provide short text messages between the mobile terminal period or between the mobile terminal and the message input device. Means a service that can be exchanged.

The cell broadcast service refers to a one-way call and message service that transmits a message from a message input device to a mobile station or a group of mobile terminals at a time from a message input device using a paging channel in a wireless channel.

Cell Broadcast Center (CBC) is a network that handles the overall role of Cell Broadcast service such as handling various Cell Broadcast messages and transmitting them to the base station controller / base station (BSC / BTS). Element.

The Cell Broadcast Service Gate (CBS G / W) is a gateway (GateWay) that connects a cell broadcast center (CBC) and an exchange.

A cell broadcast (CB) message is a message broadcasted by a cell broadcast center (CBC) to a specific region and a specific subscriber through a paging channel.

An information provider (IP) is an information provider that sends information necessary for cell broadcasting such as weather or securities to a cell broadcasting center (CBC).

Inter Processor Communication (IPC) is a protocol for interprocessor communication within an exchange.

CIDMA (CDMA Internetwork Unit) is a base station matching and each node matching device, performs a packet switching function inside the switch.

Meanwhile, for a cell broadcast service, a cell broadcast center (CBC) must be able to deliver a cell broadcast (CB) message to a base station (BTS) level, and a base station (BTS) receiving a cell broadcast (CB) message is Broadcast to a mobile terminal through a paging channel. Currently, there is no recommendation for a cell broadcast service between a cell broadcast center (CBC) and an exchange in a code division multiple access (CDMA) system, and in the case of GSM (Group Special Mobile), Proposed interworking using the following three methods by directly connecting to the base station controller (BSC).

First, a method of implementing all seven layers of the OSI (Open System Interface) on the exchange and the cell broadcasting center (CBC).

Second, the method using the common line signal method (CCS No.7).

Third, a method of mapping the application layer and the lower three layers by using a convergence function after raising only the lower three layers of the OSI to the exchange and the cell broadcasting center (CBC).

However, in the case of the first method, it is difficult to implement because all seven layers of OSI must be raised at the exchange, and there is a problem in that all base station controllers (BSCs) are connected by dedicated lines.

As in the second method, when a cell broadcast service is implemented using a common line signaling (No. 7) line between a mobile switching center (MSC) and a cell broadcasting center, the existing mobile switching center (MSC) uses voice. Since not only the call processing but also the cell broadcast (CB) message has to be processed, there is a problem that the mobile switch may be subjected to a significant load, which may adversely affect the voice call.

In addition, in the third method, the lower three layers and convergence functions of the OSI must be raised in the mobile switch, and a dedicated line is connected to the cell broadcast center (CBC) and all base station controllers (BSC).

In addition, all three methods have a problem in that a board of a mobile exchange is required to be re-manufactured in order to process a cell broadcast service.

An object of the present invention is to provide a cell broadcast system and a cell broadcast service method for performing a cell broadcast service using a cell broadcast service gateway (CBS G / W). .

1 is a block diagram of a cell broadcast system according to the present invention;

2 is a flowchart illustrating a cell broadcast service method according to the present invention;

3 is a protocol stack structure diagram when a cell broadcast center (CBC) and a cell broadcast service gateway (CBS G / W) are interworked using TCP / IP and X.25.

4 is a protocol stack structure diagram when a cell broadcast center (CBC) and a cell broadcast service gateway (CBS G / W) are interworked using CCS No. 7 and OSI 7 layers.

* Explanation of symbols for the main parts of the drawings

101: information provider 102: cell broadcasting center

103: cell broadcast service gateway 104: base station / node matching device

105: base station controller 106: base station

107: mobile exchange

In order to achieve the above object, an apparatus of the present invention receives a cell broadcast (CB) message from an external information provider and transmits a command after performing a cell broadcast (CB) message processing for a cell broadcast service. Cell broadcast centers; Interprets and executes commands inputted from the cell broadcast center, converts a protocol type interworking with the cell broadcast center into an inter-processor communication (IPC), transmits a cell broadcast message, and transmits or fails a cell broadcast message; A cell broadcast service gateway for receiving and reporting a result; A base station / node matching device installed in a mobile switch to route a cell broadcast (CB) message from the cell broadcast service gateway, and to transmit a cell success / failure result of the cell broadcast (CB) message to the cell broadcast service gateway; A base station controller for receiving and transmitting a cell broadcast (CB) message routed by the base station / node matching device and transmitting a success / failure of delivery of a cell broadcasting (CB) message to the base station / node matching device; And a base station configured to receive a cell broadcast (CB) message from the base station controller and broadcast it to a mobile terminal, and transmit a success / failure result of the cell broadcast (CB) message to the base station / node matching device through the base station controller. It includes.

In addition, the method of the present invention is a cell broadcast service method applied to a cell broadcast system, wherein a cell broadcast center receiving a cell broadcast message from an external information provider provides a response message to the information provider, and a repetition period and a cell A first step of transmitting a cell broadcast (CB) message to a cell broadcast service gateway through a command after determining a base station controller and a base station to which a broadcast message is to be delivered; After receiving a command from the cell broadcast center, a cell broadcast service gateway transmits a response message to the cell broadcast center, and after executing the command, an internal processor that can recognize a cell broadcast (CB) message by a base station / node matching device. Converting to a communication (IPC) form and transmitting a cell broadcast (CB) message to the corresponding base station controller through the base station / node matching device; And a base station controller, which has received a cell broadcast message from the cell broadcast service gateway, transmits a response message to the cell broadcast service gateway, and transmits a cell broadcast (CB) message to the corresponding base station. And receiving a cell broadcast (CB) message through the paging channel to the mobile station by the received base station.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;

1 is a configuration diagram of a cell broadcast system according to the present invention, in which 101 is an information provider, 102 is a cell broadcast center, 103 is a cell broadcast service gateway, 104 is a base station / node matching device, 105 is a base station A controller 106 denotes a base station and 107 denotes a mobile switch.

One cell broadcast service gateway (CBS G / W) 103 is provided for each area where a mobile switching center (MSC) 107 is located, and is common from the cell broadcast center (CBC) 102 for cell broadcast services. The base station / node matching device 104 of the mobile switcher 107 can recognize data transmitted in the form of a pre-signaling method (No. 7), TCP / IP (Transmission Control Protocol and Internet Protocol), and X.25. It converts the data into the form of inter-processor communication (IPC), and also processes commands of the cell broadcast center (CBC) 102.

Cellular networks (CDMA / AMPS / GSM) and personal communication networks (PCS) are connected with multiple base station controllers 105 to one mobile switch 107, and multiple base stations 106 to one base station controller 105. Is connected. The data of the mobile switch 107, the base station controller 105, and the base station 106 communicate with each other through the base station / node matching device (CINU) 104 in an internal interprocessor communication (IPC) packet format, Each base station controller 105 also communicates with each other via a base station / node matching device (CINU) 105.

The cell broadcast center (CBC) 102 may be located in the same area as the mobile switching center 107 or in another area, and is connected to the cell broadcast service gateway 103 by a dedicated line. The cell broadcast center 102 and the cell broadcast service gateway 103 can be connected by any protocol such as common line signaling method (No. 7), TCP / IP, and the like. The cell broadcast service gateway 103, which has received the packet having the same format, interprets the command from the cell broadcast center 102 and converts it into an internal interprocessor communication (IPC) format that can be recognized by the mobile switching center 107. The base station controller 105 is connected to the base station / node matching device 104 is connected, the base station / node matching device 104 receives the base station to which the base station 106 to which the cell broadcast (CB) message should be transmitted Routing to the controller 105. The base station controller 105 transmits a cell broadcast (CB) message to the corresponding base station 106, and the base station 106, which has received the cell broadcast (CB) message, broadcasts the cell broadcast (CB) message to the mobile terminal in the region. Broadcast).

Looking at the specific functional operation of each component as follows.

The cell broadcast service gateway 103 can be implemented using a general-purpose workstation, and since X.25 or TCP / IP is naturally raised on a general workstation, X.25 or TCP / IP is transmitted to the mobile switch 107. There is no need to raise your back. In general, the cell broadcast center 102 and the cell broadcast service gateway 103 are connected by a dedicated line such as T1 / E1, or both the cell broadcast center 102 and the cell broadcast service gateway 103 use a packet data network (PSDN). You can also connect. The cell broadcast service gateway 103 and the base station / node matching device 104 are connected by an inter-processor inter-processor communication (IPC) protocol, and the cell broadcast service gateway 103 uses a protocol such as TCP / IP to communicate between internal processors. It also acts as a protocol converter to convert to IPC) protocol.

After receiving the cell broadcast message from the information provider 101, the cell broadcast center 102 processes the cell broadcast message such as scheduling of the cell broadcast message for the cell broadcast service. It handles the general matters, and in detail, it plays the following roles.

1) Assign a serial number to a cell broadcast (CB) message received from the information provider 101.

2) Command delivery, such as message delivery, change, and deletion, to the cell broadcast service gateway 102.

3) Determine the base station controller 105 and the base station 106 to which cell broadcast (CB) messages should be sent.

4) Determine when the message should be sent.

5) Stop transmission decision and stop command.

6) Determining the repetition frequency of the message.

Meanwhile, one cell broadcast service gateway 103, which is a core part of the present invention, is installed for each mobile switch 107, and can be implemented using a general-purpose workstation. The cell broadcast service gateway 103 performs this after interpreting the command input from the cell broadcast center 102. In addition, the cell broadcast center 102 and the cell broadcast service gateway 103 may be interworked with various protocols such as TCP / IP and X.25, and the cell broadcast service gateway 103 and the base station controller 105 may be inter-processors. Since it is in the form of communication (IPC), it also converts a packet such as TCP / IP into an interprocessor communication (IPC). The role of the cell broadcast service gateway 103 is listed in detail as follows.

1) The cell broadcast service gateway 130 can be thought of as part of the mobile switch 107, and therefore must obtain an address for internal interprocessor communication (IPC) routing.

2) establishing and releasing a link with the cell broadcast center 102. This process is unnecessary when the cell broadcast center and the cell broadcast service gateway are implemented in a connectionless manner.

3) Transmit the cell broadcast (CB) message from the cell broadcast center 102 into an internal interprocessor communication (IPC) form that the mobile switcher 107 can interpret and transmit to the base station controller 105 and the base station 106. .

4) Report success / failure of cell broadcast (CB) message delivery.

5) storage of a cell broadcast (CB) message received from the cell broadcast center 102 for transmission.

6) Scheduling of cell broadcast (CB) messages sent to the paging channel.

7) Error notification to the cell broadcast center 102 when the message input from the cell broadcast center 102 is not in the proper format.

On the other hand, the base station / node matching device 104 performs the same operation as that installed in the existing mobile switch 107, and performs the following operations for the cell broadcast (Cell Broadcast) service.

1) A function of routing a cell broadcast (CB) message from a cell broadcast service gateway 103 to a corresponding base station controller 105 and a base station 106.

2) Delivering the success / failure result of the cell broadcast (CB) message received from the base station controller 105 and the base station 106 to the cell broadcast service gateway 103.

2 is a flowchart illustrating a cell broadcast service method according to the present invention.

First, when the cell broadcast center 102 receives the cell broadcast message from the information provider 101 (201), it provides a response message to the information provider 101 (202), and the base station controller to which the repetition period and the cell broadcast message are delivered. After determining 105 and base station 106 (203), a cell broadcast (CB) message is transmitted to cell broadcast service gateway 103 via the appropriate command (204).

Subsequently, when the cell broadcast service gateway 103 receives a command from the cell broadcast center 102, the cell broadcast service gateway 103 transmits a response message (205) and after performing the command, the mobile switch 107 recognizes the cell broadcast (CB) message. A cell broadcast (CB) message is transmitted to the corresponding base station controller 204 through the base station / node matching device 104 by converting the data into an internal interprocessor communication (IPC) form (206).

Subsequently, each base station controller 105 transmits a response message when receiving the cell broadcast message (208) and transmits a cell broadcast (CB) message to the corresponding base station 106, and each base station 106 transmits a cell broadcast (CB) message. Is broadcasted to the mobile terminal through the paging channel (209).

3 is a protocol stack structure diagram when a cell broadcast center (CBC) and a cell broadcast service gateway (CBS G / W) are interworked using TCP / IP and X.25.

The cell broadcast center 102 includes a CBC application layer 301, a convergence function layer 302, an X.25 (or TCP / IP) layer, a High Level Data Link Control (HDLC) layer, and a physical layer. The cell broadcast service gateway 103 has an IPC transform function layer 306 that transforms the CBC application layer 301 into an IPC layer 307.

The convergence function layer 302 functions to map the application layer 301 and the lower layer 303, and the cell broadcast service application is connected to the connectionless. If the lower protocol (TCP / IP, X.25) is connection-oriented, it connects to it.

The IPC conversion function layer 306 of the cell broadcast service gateway 103 may use the command after the cell broadcast service gateway 103 interprets a command transmitted from the cell broadcast center 102 through an X.25 or TCP / IP link. Is converted into an IPC format that can be recognized by the mobile switching center 107 and a TCP / IP or X.25 format that can be recognized by the cell broadcasting center 102 for an incoming message in the IPC form from the mobile switching center 107. It acts as a protocol converter to convert.

4 is a protocol stack structure diagram when a cell broadcast center (CBC) and a cell broadcast service gateway (CBS G / W) are interworked using the CCS No. 7 and the OSI 7 layer. In this case, a convergence function is required. Connection is possible without The IPC conversion function layer 403 of the cell broadcast service gateway 103 moves the command after the cell broadcast service gateway 103 interprets a command transmitted from the cell broadcast center 102 through No. 7 or an OSI7 link. Protocol converter that converts the IPC format that the exchange 107 can recognize, and converts the message coming in the IPC form from the mobile switch 107 into the No. 7 or OSI7 format that the cell broadcasting center 102 can recognize. Plays the role of.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

The present invention as described above has various effects as follows.

First, a cell broadcast service can be implemented with little modification to an existing mobile switch.

Second, since the cell broadcast service gateway is provided to implement the cell broadcast service, the cell broadcast center (CBC) is directly connected to the base station controller without passing through the mobile switch and thus does not affect voice calls.

Third, when implementing a cell broadcast service by directly connecting a cell broadcast center (CBC) and a base station controller, the number of leased lines per mobile switching area is required as many as the number of base station controllers. Only one leased line is required per exchange area. For example, in the case of the current CDMA system, assuming that 12 or more base station controllers are connected to each mobile switch, at least 11 leased line savings can be achieved.

Claims (6)

A cell broadcast center receiving a cell broadcast message from an external information provider and performing a cell broadcast message processing for a cell broadcast service, and transmitting a command; Interprets and executes commands inputted from the cell broadcast center, converts a protocol type interworking with the cell broadcast center into an inter-processor communication (IPC), transmits a cell broadcast message, and transmits or fails a cell broadcast message; A cell broadcast service gateway for receiving and reporting a result; A base station / node matching device installed in a mobile switch to route a cell broadcast (CB) message from the cell broadcast service gateway, and to transmit a cell success / failure result of the cell broadcast (CB) message to the cell broadcast service gateway; A base station controller for receiving and transmitting a cell broadcast (CB) message routed by the base station / node matching device and transmitting a success / failure of delivery of a cell broadcasting (CB) message to the base station / node matching device; And A base station receiving a cell broadcast (CB) message from the base station controller and broadcasting it to a mobile terminal and transmitting a success / failure result of the cell broadcast (CB) message to the base station / node matching device through the base station controller; Cell broadcasting system comprising a. The method of claim 1, The cell broadcast center, A serial number is assigned to a cell broadcast (CB) message received from the information provider, a message delivery, modification, and deletion command is transmitted to the cell broadcast service gateway, and a cell broadcast (CB) message must be transmitted. Determining a base station controller and a base station to determine, determining a time at which a message should be transmitted, instructing stop and stop transmission, and determining a repetition period of the message. The method of claim 2, The cell broadcast service gateway, Obtains an address for internal interprocessor communication (IPC) routing, converts a cell broadcast (CB) message from the cell broadcast center into an internal interprocessor communication (IPC) form that the base station / node matching device can interpret Transmits to the base station controller and the base station, stores a cell broadcast (CB) message received from the cell broadcast center, schedules a cell broadcast (CB) message sent to the base station controller through a paging channel, and And notifying an error message to the cell broadcast center when the message inputted from the cell broadcast center is not a suitable format. The method of claim 3, wherein The cell broadcast service gateway, And performing a function of establishing and releasing a link with the cell broadcast center. The method according to any one of claims 1 to 4, The cell broadcast center and the cell broadcast service gateway, Cell broadcast system, characterized in that connected by a dedicated line or connected using a packet data network (PSDN). A cell broadcast service method applied to a cell broadcast system, After receiving a cell broadcast message from an external information provider, the cell broadcast center provides a response message to the information provider, determines a base station controller and a base station to which the cell broadcast message is to be transmitted, and repeats a cell broadcast (CB) message command. Transmitting to the cell broadcast service gateway through a first step; After receiving a command from the cell broadcast center, a cell broadcast service gateway transmits a response message to the cell broadcast center, and after executing the command, an internal processor that can recognize a cell broadcast (CB) message by a base station / node matching device. Converting to a communication (IPC) form and transmitting a cell broadcast (CB) message to the corresponding base station controller through the base station / node matching device; And When the base station controller receiving the cell broadcast message from the cell broadcast service gateway transmits a response message to the cell broadcast service gateway and transmits a cell broadcast (CB) message to the corresponding base station, the base station controller receives the cell broadcast message from the base station controller. And a third step of the base station broadcasting the cell broadcast (CB) message to the mobile terminal through the paging channel.