KR20050017581A - Method of Offering BCMCS Service in Mobile Communication System - Google Patents

Abstract

PURPOSE: A method for supplying a broadcasting service in a mobile communication system is provided to connect an AT(Access Terminal) with a data terminal device, and to register the AT in a contents broadcasting service, thereby supplying a broadcasting service by using the data terminal device having a bigger LCD than an LCD of the AT. CONSTITUTION: A data terminal device(100) transmits session information of a broadcasting service to a PDSN(600)(407). The PDSN(600) sends the session information to an AT(200)(408). The AT(200) sends an ACK message to the PDSN(600)(409). BSs(300,400) send broadcast overhead messages to the AT(200)(410). The AT(200) transmits a registration message(411). The BSs(300,400) loads other parameters on an IOS message to send the IOS message to a PCF(500)(412). The PCF(500) transmits the IOS message to the PDSN(600)(413). The PDSN(600) sends an IOS ACK message via an authentication procedure(414). The PCF(500) sends the IOS ACK message to the BSs(300,400)(415). The data terminal device(100) receives the broadcasting service from a content server(800) through the AT(200)(416).

Description

Broadcasting service providing method in mobile communication system {Method of Offering BCMCS Service in Mobile Communication System}

The present invention relates to a broadcast service providing method in a mobile communication system, and more particularly, to a broadcast service providing method in a mobile communication system for providing a broadcast service.

A major concern in next generation mobile communications is high speed data transmission. For example, 3GPP2 (3rd Generation Partnership Project 2) targets a mobile communication system for high-speed data transmission, such as 1x EV-DV (1x Evolution Data and Voice). In a mobile communication system under 3GPP2, a broadcast service is considered to efficiently use resources.

The broadcast service refers to a service in which the mobile station receives fast forward data from the base station without providing reverse feedback information from the mobile station to the base station. That is, a broadcast service is provided by a base station simultaneously transmitting data to terminals at a high speed.

The broadcast service is a service for compensating for problems such as resource waste and system load in a network and a wireless section of a conventional unicast scheme. The broadcast service under discussion at the current 3GPP2 standardization meeting defines only the broadcast service using a network model.

The protocol stack using the conventional network model is shown in FIG. In the conventional network model protocol stack, the mobile station is composed of a terminal equipment 2 (TE 2) and a mobile terminal 2 (Mobile Terminal MT 2). Here, the terminal equipment 2 represents a plurality of data terminal devices connected to one mobile terminal, and the mobile terminal 2 means one mobile terminal connected to the plurality of data terminal devices. The mobile terminal 2 sets the PPP between the packet data service nodes in the link layer, and further sets the PPP between the terminal equipment 2. Here, the terminal equipment 2 transmits an IP at the network layer over the PPP. The IP 20 is an IP to which the packet data service node and the mobile terminal 2 are connected, and the IP 30 of another upper layer represents an IP to which the mobile terminal 2 and the terminal equipment 2 are connected. Providing a broadcast service using the network model to which the above protocol stack is applied has a problem that the IP processing speed is lowered and the mobile terminal is overloaded more than necessary because the mobile terminal processes a plurality of IPs and PPPs. In addition, there is a problem that the mobile terminal is complicated in software (S / W).

Accordingly, an object of the present invention is to reduce the IP processing speed by providing a broadcast service by applying a relay model in a mobile communication system.

It is also an object of the present invention to simplify the mobile terminal in software.

It is also an object of the present invention to use a smaller number of protocols of a mobile terminal in a mobile communication system.

In accordance with another aspect of the present invention, a method for providing a broadcast service in a mobile communication system includes a broadcast service server and a broadcast service controller, and is connected to a plurality of base stations of a mobile communication system through a packet data service node. A method of providing a broadcast service to a data terminal device having a larger liquid crystal display device than the mobile terminal through a mobile terminal in a data service node, the method comprising: providing a PPP setting request message for receiving a broadcast service from the data terminal device; Receiving through a process, transmitting a PPP configuration complete message to the data terminal device, and notifying the data terminal device of the current broadcast service to complete the preparation for the data terminal device to receive a broadcast service Process, and the data terminal device It characterized in that it comprises a character and the process, the process of transmitting a broadcast service, the initial message containing the information of the mobile terminal to the mobile terminal receiving the security information of the broadcast service from the broadcast service controller.

In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

The present invention provides a broadcast service by applying a relay model. The broadcast service applying the relay model includes a data terminal device having a larger liquid crystal display device than the liquid crystal display device of the mobile terminal and the packet data transmitted to the mobile terminal by connecting the mobile terminal to an RS-232 interface or a USB port. By transmitting to a device to provide a broadcast service. That is, the packet data of the data terminal device is transmitted to the packet data service node through the mobile terminal, and the packet data transmitted from the packet data service node is transmitted to the data terminal device through the mobile terminal. Accordingly, by applying the relay model as described above, it is possible to provide a multimedia service simultaneously with a broadcast service in a mobile communication system. At this time, the mobile terminal plays only the modem role of the data terminal device. The data terminal device means that the liquid crystal display device is larger than the mobile terminal. For example, the data terminal device includes a personal digital assistant (PDA), a personal computer (PC), and a notebook computer.

In addition, the present invention supports a broadcast service through a forward packet data channel (F-PDCH) for high-speed data transmission in a 1xEV-DV (Evolution in Data and Voice) system, which is a CDMA communication system. . In the present invention, the broadcast service means that the broadcast server provides the same traffic to the data terminal device connected to the mobile terminal.

In the mobile communication system according to an embodiment of the present invention, a system for providing a broadcast service includes a data terminal device having a liquid crystal display device that is larger than the liquid crystal display device of the mobile terminal so as to receive a broadcast service. 100, an access terminal (AT) 200 serving as a modem to transmit the packet data of the data terminal device to the packet data service node through an air interface, and a plurality of base station transceivers (Access Network Transmission) System (ANTS) (300 ~ 330), the base station controller (Access Network Controller: ANC) 400 for controlling the plurality of base station transceiver devices (300 ~ 330), the packet data service node and the base station is connected to the control period Packet control function (PCF) 500 for interfacing packet data and packet data service node for interfacing with external internet network (Packet Data Service Node: PDSN) (600). Here, the packet data service node 600 is connected to a Domain Name System (DNS) (not shown in FIG. 1) that manages an IP address. The packet data service node 600 is further connected with a broadcast service controller 700, a broadcast service server 800, a billing / authentication server 900, and the like.

Here, the data terminal device 100 connects the mobile terminal 200 to the packet data service node 600 by connecting to the mobile terminal 200 through an RS-232 interface or a USB port, and the packet data service node 600 transmits packet data. Transmits the data to the data terminal device 100 through the mobile terminal 200. Here, the data terminal device 100 may receive another multimedia service simultaneously with the broadcast service transmitted to the mobile terminal 200 through an RS-232 interface or a USB port.

The broadcast service controller 700 transmits broadcast session information (IP multicast address, encryption key, broadcast service ID, etc.) to the mobile terminal 200, the packet data service node 600, and the broadcast server 800. to provide. That is, the broadcast service controller 700 connected to the broadcast server 800 controls the communication between the broadcast server 800 and the terminal 200, and provides an air interface and a radio access network (RAN) for the broadcast service. To perform some functions. In practice, the broadcast service controller 700 may be connected to a plurality of broadcast servers 800.

The broadcast server (CS) 800 provides a broadcast service and is also responsible for application level encryption of broadcast content when application layer encryption is provided.

In addition, the broadcast server 800 includes a video and a sound for a broadcast service, and generates broadcast data in the form of Internet Protocol (IP) packets to form a packet communication network such as the Internet. Transfer to the base station (300, 400) through.

The billing / authentication server (Authentication, Authorization, Accounting: AAA) 900 is responsible for authentication and billing for the broadcast service.

Next, a protocol stack for performing a broadcast service providing method in a mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 3.

In the relay model protocol stack according to the embodiment of the present invention, the mobile station is composed of the terminal equipment 2 and the mobile terminal 2. The terminal equipment 2 refers to the data terminal device 100 and the mobile terminal 2 refers to the mobile terminal 200. In the relay model protocol stack, the terminal equipment 2 sets up the PPP between the packet data service nodes in the link layer and transmits an IP to an upper layer, the network layer. The difference from the conventional network model protocol stack is that the PPP configuration is performed only on the terminal equipment 2. Applying the relay model protocol stack as described above, the mobile terminal 2 only plays a role of relaying IP to the terminal equipment 2. In addition, it is possible to save IP processing time than a mobile communication system employing a conventional network model protocol stack. It also reduces the load on complex mobile terminals.

A broadcast service providing method in a mobile communication system according to an embodiment of the present invention will be described with reference to the scenario of FIG.

First, in step 401, the data terminal apparatus 100 performs PPP between the packet data service nodes 600 at the network layer by the relay model protocol stack shown in FIG. The PPP setting process will be described in detail below. First, the data terminal device 100 transmits a PPP configuration request message for a broadcast service request of a user to the packet data service node 600 through the mobile terminal 200. At this time, the mobile terminal 200 performs only a modem role. Then, the data terminal device 100 establishes a traffic channel with the base stations 300 and 400, and then connects the packet service node 600 with a protocol for broadcast service (hereinafter referred to as PPP). Accordingly, a path for a broadcast service is established between the data terminal apparatus 100 and the packet data service node 600. Therefore, the packet data service node 600 having the path set for the broadcast service with the mobile terminal 200 transmits the broadcast service information to the billing / authentication server 900 to authenticate the mobile terminal 200 in step 402. do. The charging / authentication server 900 then retrieves the user profile for authentication under the control of the broadcast service controller 700.

When the search for the corresponding user profile is completed, the broadcast service controller 700 transfers the profile result information, that is, the authenticated broadcast service ID BCMCS_FLOW_ID, to the packet data service node 600 in step 403. send. In step 404, the packet data service node 600 stores the result information and notifies the mobile terminal 200 that the PPP has been successfully set, and transmits the result information to the data terminal apparatus 100.

After the PPP configuration, the packet data service node 600 transmits session description information of an application service layer required for a broadcast service between the data terminal device 100 and the broadcast server 800 to the data terminal device 100 currently broadcasting in step 405. (SDP: Session Description Protocol). The session description information includes information related to an encoder and an encryption setting.

In operation 406, the data terminal device 100 receives security information of a broadcast service to be listened to through the broadcast service controller 700. At this time, a broadcast service key valid time, a broadcast service key (BAK), and broadcast service related information are received. Since the connection procedure between the packet data service node 600 and the broadcast service controller 700 is a general content before step 406, the description thereof is omitted in the present invention.

In step 407, the data terminal device 100 uses an Internet Group Management Protocol (IGMP) message defined by the Internet Engineering Task Force (IETF) as the packet data service node 600 for session information of the broadcast service being listened to. Send it through.

Then, at this time, the packet data service node 600, in step 408, the broadcast service initial message (BCMCS Init) defined by the IOS (Inter Operability Service: IOS) for the broadcast service session information requested by the mobile terminal 200 in the IGMP message. message to the mobile terminal 200 through the message). The IOS message is a message for determining whether the base station 300 or 400 can establish a mobile network connection by confirming a user service authentication of a broadcast service requested by the mobile terminal 200.

After receiving the broadcast service session information in step 409, the mobile terminal 200 transmits an acknowledgment message to the packet data service node 600 indicating the successful reception.

In step 410, the base station 300 or 400 loads the broadcast service ID and the unique information on the air in a broadcast overhead message and transmits it to the mobile terminal 200.

In step 411, the mobile terminal 200 identifies a transmission period of a registration message or an actual transmission section of a broadcast service through a broadcast overhead message, and sends a registration message to the base stations 300 and 400 to request listening to the broadcast. send.

In step 412, the base station 300 or 400 loads the broadcast service ID and other parameters necessary for listening to the broadcast in an IOS message and transmits the same to the packet control device 500.

In operation 413, the packet control apparatus 500 transmits a broadcast service ID and other parameters necessary for listening to a broadcast to the packet data service node 600 with an IOS message.

The packet data service node 600 transmits an IOS response message to the packet control device 500 through an authentication procedure of the broadcast service ID requested by the mobile terminal 200 in step 414.

The packet control apparatus 500 transmits an IOS response message to the base stations 300 and 400 through an authentication procedure of the broadcast service ID requested by the mobile terminal 200 in step 415.

The mobile terminal 200 performs a bearer setup procedure for setting a path with the packet data service node 600. In operation 416, the data terminal device 100 receives a broadcast service from the broadcast server 800 according to a command of the broadcast service controller 700 through the mobile terminal 200.

The present invention, in order to provide a specific broadcast content in a mobile communication system applying a relay model in a mobile communication system, a mobile terminal connects an RS-232 interface or a USB port to a data terminal device, and provides a content broadcast service through the mobile terminal. By registering, it is possible to provide a broadcast service using a data terminal device (for example, a notebook computer, a PC, a PDA) having a larger liquid crystal display device than the liquid crystal display device of the mobile terminal. As a result, the data terminal device can simultaneously receive a service other than a broadcast service.

In addition, the present invention has an effect of reducing the IP processing speed in providing a broadcast service by applying a relay model in a mobile communication system.

In addition, the present invention has the effect of simplifying the mobile terminal in software.

In addition, the present invention enables a smaller number of protocols of a mobile terminal in a mobile communication system.

1 is a structural diagram showing a protocol stack of a conventional network model,

2 is a structural diagram showing a high speed packet data system according to an embodiment of the present invention;

3 is a structural diagram showing a protocol stack of a relay model according to an embodiment of the present invention;

4 is a scenario illustrating a broadcast service providing method in a mobile communication system according to an embodiment of the present invention.

Claims (1)

A data terminal including a broadcast service server and a broadcast service controller, connected to a plurality of base stations of a mobile communication system through a packet data service node, and having a larger liquid crystal display device than the mobile terminal through the mobile terminal in the packet data service node. In the method for providing a broadcast service to the device, Receiving a PPP setting request message for receiving a broadcast service from the data terminal device through the mobile terminal; Transmitting a PPP setting completion message to the data terminal device; Informing the data terminal device of the current broadcast service and completing preparation for the data terminal device to receive a broadcast service; Receiving security information of a broadcast service to be listened to by the data terminal device from a broadcast service controller; And transmitting a broadcast service initial message including information of the mobile terminal to the mobile terminal.