KR20030008681A - Multimedia broadcasting service method using broadcasting/multicast control in wireless telecommunication system - Google Patents

Abstract

PURPOSE: A method for serving multimedia broadcasting using exclusive channels for broadcasting in a wireless communication system is provided to utilize limited wireless section resources at the maximum, thereby providing a high-speed multimedia broadcasting service. CONSTITUTION: A method for serving multimedia broadcasting using exclusive channels for broadcasting in a wireless communication system includes the steps of inputting information generated by an information provider to an MBS(Multimedia Broadcasting Service) server(101), transmitting the information to a node-B through an RNC(Radio Network Controller)(102,103), transmitting multimedia broadcasting service information from the node-B to a UE(User Equipment)(104), and transmitting a response signal related to the multimedia broadcasting service to the information provider through the RNC and the MBS server(105-107).

Description

Multimedia broadcasting service method using broadcasting dedicated channel in wireless communication system {Multimedia broadcasting service method using broadcasting / multicast control in wireless telecommunication system}

The present invention relates to a multimedia broadcasting service method using a broadcast-only channel in a wireless communication system, and a computer-readable recording medium recording a program for realizing the method. A multimedia broadcasting service method and a method for realizing a multimedia broadcasting service using a dedicated broadcast channel in a next generation mobile communication system such as synchronous IMT-2000 (International Mobile Telecommunication) and asynchronous UMTS (Universal Mobile Telecommunication Service) The present invention relates to a computer-readable recording medium having recorded thereon a program.

FIG. 1 is a diagram illustrating a configuration of a general broadband wireless communication network (W-CDMA), and illustrates an example of a UTRAN (UTMS Terrestrial Radio Access Network).

As shown in FIG. 1, an asynchronous mobile communication network (UTRAN) includes an asynchronous mobile station (UE) 10, an asynchronous radio network (RNS) 20, and a wireless communication core network. (For example, the European-style asynchronous GSM-MAP core network) 30 is organically connected. Here, the multimedia broadcasting service technology when the mobile station (UE) 10 is connected to several base stations (Node B) of the asynchronous radio network (RNS) 20 and the communication is in progress, the wireless communication with the mobile station (UE) 10 A technology applied between the communication core networks 30.

Mobile communication is limited in wireless section capacity, so many people cannot receive multimedia broadcasting service using high speed transmission.

Therefore, subscribers who want high-speed multimedia broadcasting services must access the system individually and receive services in a point-to-point form. However, there is a limit to the capacity that can be handled like a wired network, so many subscribers cannot be accommodated.

Therefore, even though the current subscriber wants a lot of multimedia broadcasting services, there is a problem that the conventional multimedia broadcasting service cannot be provided due to the capacity of the wireless section.

The present invention has been proposed in order to solve the above problems, and provides a multimedia broadcasting service method and a program for realizing the multimedia broadcasting service using a dedicated broadcast channel in a wireless communication system. Its purpose is to provide a computer-readable recording medium having recorded thereon.

1 is an exemplary configuration diagram of a general broadband wireless communication network (W-CDMA).

2 is a structural diagram of a BMC protocol used in the present invention.

3 is an explanatory diagram showing a channel mapping relationship of a BMC used in the present invention.

4 is an exemplary configuration diagram of a wireless communication system to which the present invention is applied.

5 is a structural diagram of a CM service request message used in the present invention.

6 is an explanatory diagram showing a CM service type used in the present invention.

7 is a structural diagram of a protocol set in a terminal used in the present invention.

8 is a structural diagram of an embodiment of a BMC message according to the present invention;

9 is a diagram illustrating a detailed field of a BMC message according to the present invention.

10 is a flowchart illustrating an embodiment of a multimedia broadcasting service method in a system according to the present invention.

11 is a flowchart illustrating a multimedia broadcasting service method in a terminal according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: UE 12: Node-B

13: radio network controller (RNC) 14: switching center (MSC)

15: Multimedia Broadcasting Service Center 16: Home Location Register (HLR)

17: Information provider 18: SGSN

19: WAP Server

In order to achieve the above object, the present invention provides a multimedia broadcasting service method in a wireless communication system, comprising: a first step of registering a service subscriber to receive a multimedia broadcasting service (MBS) through a wireless communication network; Converting, by the multimedia broadcasting service center, the multimedia content provided by the information provider into a broadcast / multicast control (BMC) message; And a third step of providing a multimedia broadcasting service (MBS) by broadcasting the broadcast / multicast control (BMC) message to a terminal through a broadcast dedicated channel of the wireless communication network.

In addition, the present invention is characterized in that the terminal further comprises a fourth step of authenticating a subscriber in connection with the wireless communication network, and providing the multimedia broadcasting service (MBS) to the authenticated subscriber.

According to an aspect of the present invention, there is provided a wireless communication system including a processor for a multimedia broadcasting service, comprising: a first function of registering a service subscriber to a multimedia broadcasting service (MBS) through a wireless communication network; A second function of converting multimedia content provided by an information provider into a broadcast / multicast control (BMC) message in a multimedia broadcasting service center; And a program for realizing a third function of providing a multimedia broadcasting service (MBS) by broadcasting the broadcast / multicast control (BMC) message to a terminal through a broadcasting dedicated channel of the wireless communication network. Provide a readable recording medium.

In addition, the present invention provides a computer-readable recording of a program for the terminal to authenticate the subscriber in association with the wireless communication network, and to further realize a fourth function of providing the multimedia broadcasting service (MBS) to the authenticated subscriber. Provide the medium.

With the evolution of Code Division Multiple Access (CDMA) mobile telephony, its transmission speed has increased significantly, and dedicated channels for various purposes are being supplemented for various services. Among them, various services can be provided by using BMC (Broadcast / Multicast Control) defined in asynchronous UMTS. This BMC is a function used exclusively for broadcasting in UMTS. However, the international standard does not yet define a scheme for a multimedia broadcasting service, and recommends a scheme for transmitting text-oriented. However, as the demand for multimedia increases, its use is expected to be further developed. This channel has a unique broadcasting characteristic that allows the system to transmit the same information to a large number of subscribers. Therefore, the channel has a significant advantage in terms of system capacity when transmitting the same data.

Accordingly, in the present invention, in order to implement a multimedia broadcasting service using a broadcast-only channel in a next-generation mobile communication system, actual information is transmitted to a broadcasting channel, and the information is controlled using a short message service (SMS) or wireless Internet as information for controlling the broadcasting channel. You want to control the information.

To this end, the present invention implements a multimedia broadcasting service in the BMC function.

Therefore, the present invention can provide a high speed multimedia broadcasting service to many subscribers at the same time by using BMC in a next generation mobile communication system.

In addition, the present invention can solve the problem of capacity overcoming, which is a problem of wireless communication, by presenting a multimedia broadcasting service and a method for controlling the same using a broadcast-only channel in a next generation mobile communication system.

In addition, when the present invention is commercialized, it is possible to accommodate a large number of subscribers without facility investment and to provide a high quality multimedia broadcasting service.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, look at the BMC (Broadcast / Multicast Control) function to help understand the technical gist of the present invention.

The BMC (Broadcast / Multicast Control) function is a Layer 2 function that is defined as broadcast only in asynchronous UMTS. That is, BMC is a function existing in Layer 2, and is a one-way communication function that does not require acknowledgment in the radio section. Therefore, BMC has an advantage of solving the capacity problem of the wireless section by using a unique one-way communication function.

If the two-way communication, each occupies a radio resource (Radio Resource), the overall capacity problem occurs. However, in the case of unidirectional communication, all the receivable terminals can be received, but in this case, accurate subscriber authentication and service type management are very important factors.

Since BMC has a limited transmission speed, it is difficult to transmit a large amount of multimedia. Therefore, an appropriate service is required.

The structure of the protocol of the BMC is shown in FIG.

Referring to the BMC protocol with reference to Figure 2, the multimedia information generated in the User Plane 21 of the BMC center enters the BMC 23 via the BMC SAP (Service Access Point) 22, this BMC (23) Is a component having a unique broadcasting function.

The BMC 23 and the RRC (Radio Resource Control) 25 communicate with each other using the CBMC-SAP 24.

When the BMC message is transmitted to the radio link control (RLC) 27, the BMC message operates in the unacknowledgement mode (UM) 26 and is configured for unidirectional communication. Here, the RLC 27 is a function for preventing the occurrence of an error between the terminal (UE) and the base station (Node-B) in the radio section.

The BMC message, which has passed through the RLC 27, is mapped from the medium access control (MAC) -SAP to the common traffic channel (CTCH) 28.

Referring to FIG. 3, referring to the channel mapping relationship of the BMC 23, the BMC message generated in the user plane 21 is transmitted through the RLC 27 and the CTCH-SAP 28 to the FACH (Transport Layer) of the transport layer. Multiplexed into a Forward Access Channel (31).

The FACH 31 transmits a secondary common control physical channel (S-CCPCH) 32, which is a physical layer of the radio section, to the UE.

4 is an exemplary configuration diagram of a wireless communication system to which the present invention is applied and shows a system configuration for a multimedia broadcasting service using a BMC channel of asynchronous UMTS.

In the figure, reference numeral "41" denotes a mobile station (UE), "42" denotes a Node-B, "43" denotes a radio network controller (RNC), and "44" denotes a switching center ( MSC: Mobile Switching Center), "45" is Multimedia Broadcasting Service (MBS) Center, "46" is Home Location Register (HLR), "47" is Information Provider (IP) "48" denotes a Serving GPRS Support Node (SGSN), and "49" denotes a WAP (Wireless Application Protocol) server.

In order to provide a multimedia broadcasting service using a BMC, the information provider 47 generating final information is transmitted to a multimedia broadcasting service (MBS) center 45.

The MBS center 45 may be viewed as a BMC center, which processes the upper level protocol proposed by the present invention.

The multimedia broadcast message in the MBS center 45 is transmitted to the mobile station (UE) 41 via the radio network controller (RNC) 43 and the node B 42.

On the terminal side, in order to receive BMS service (ie, multimedia broadcasting service using BMC), subscriber authentication is required from the system. In this case, CM service type of a CM (Call Management) Service Request Message (CM) when making an outgoing call. Denotes a reserved field.

Subscriber authentication can be set in units of 10, 20 or 30 days to prevent frequent subscriber authentication.

In order for the subscriber to be authenticated, if a specific condition is met, for example, the subscriber must be authenticated from the system every 10 days. If the subscriber station makes a call from the mobile station (UE) 41, the CM service type of the CM (Call Management) service request message Is set to "1111" and transmitted. This information is sent from the switching center (MSC) 44 back to the home location register (HLR) 46 via the Node B 42 and the radio network controller (RNC) 43, and the home location register (HLR) 46. ) Will be verified by the subscriber. At this time, if the abnormal subscriber, the mobile station (UE) 41 internally prevents the reception of multimedia using the BMC.

On the other hand, subscriber authentication may be made using the SGSN 48 and the WAP server 49.

The structure of the CM service request message for subscriber authentication is shown in FIG. 5, and among the CM service request messages, the CM service type determines the type of service to be sent. The detailed structure is shown in FIG.

In the CM service type of FIG. 6, since a lot of reserved parts remain, only one of them can be used. For example, the CM service type "1111" means a multimedia broadcasting service using BMC.

On the other hand, the protocol set in the mobile station (UE) 41 is shown in FIG.

The multimedia broadcasting service using the BMC includes a User Datagram Protocol (UDP) 73, a Real Time Protocol (RTP) 72, and a Multimedia Content Decoder 71 above the existing BMC 74. Here, UDP 73 and RTP 72 are general general protocols used for the Internet.

When transmitting information from a Node-B 42, which is a base station, to a terminal (UE) 41, an S-CCPCH 78, which is a physical channel, and a FACH, which is a transport channel. (77) and the transport layer of the CTCH 76, which is a logical channel. The information transmitted through the transport layer is configured as shown in FIG. 8 in the BMC 74 portion.

The multimedia content 71 may exist in various ways, such as a mobile multimedia service (MMS), a video on demand (VOD), an audio on demand (AOD), and the like.

In the present invention, coding is discussed. Taking the VOD as an example, it may be a general moving picture expert group (MPEG-4). MMS follows international standards.

The type of multimedia broadcasting service is classified into a message type of BMC function and can be easily processed.

Looking at the message of the BMC layer with reference to Figure 8, "Message Type (1 byte)" 81 represents a multimedia using the BMC, using a reserved "0XF0" as a message separation field (Reserved). &Quot; Message ID (2 bytes) " 82, " Serial Number (2 bytes) " 83, " Data Coding Scheme (1 byte) " 84 are defined in FIG. On the other hand, " MBS Data (Max. 1246 bytes) " 85 is a portion that holds actual data, and the upper TCP or UDP enters.

Looking at the detail field of the BMC message with reference to Figure 9 as follows.

&Quot; Message ID (2 bytes) " 82 is a detailed classification in one service. For example, VOD represents a channel that distinguishes the movie from the news. That is, Message ID (2 bytes) is a channel number for one MBS (eg, channel 1 in VOD, news channel, etc.).

"Serial Number (2 bytes)" 83 represents the elapsed time in one channel, allowing the user to know the current state. In other words, Serial Number (2byte) is the elapsed time for one channel (e.g. 2 movie channels in VOD, 30 minutes elapsed)

The "Data Coding Scheme (1 byte)" 84 is a factor that distinguishes various multimedia broadcasting services, that is, services such as VOD and MMS. Data Coding Scheme (1 byte) 84 distinguishes MBS types (eg, VOD, AOD, MMS, Java MIDlet, etc.).

10 is a flowchart illustrating an embodiment of a multimedia broadcasting service method in a system according to the present invention.

As shown in FIG. 10, in the multimedia broadcasting service method of the system according to the present invention, first, information generated by the information provider 47 is input to the multimedia broadcasting service (MBS) server 45 (101), and wirelessly. It is transmitted (102, 103) to a Node-B (42) via a network controller (RNC) 43. Then, the Node-B 42 transmits the multimedia broadcasting service information to the mobile station (UE) 41 (104), and transmits a response signal for the multimedia broadcasting service to the radio network controller (RNC) 43, It transmits to the information provider 47 through the multimedia broadcasting service server 45 (105 to 107).

11 is a flowchart illustrating a multimedia broadcasting service method in a terminal according to the present invention.

As illustrated in FIG. 11, in the multimedia broadcasting service method of a terminal according to the present invention, first, when a subscriber selects a multimedia broadcasting service (MBS) using a BMC from the terminal menu (111), the terminal (mobile station (UE) ( 41), it is determined whether the multimedia broadcasting service (MBS) is possible (112).

If it is determined that the terminal cannot provide the multimedia broadcasting service (MBS), the terminal displays the cause thereof on the screen of the terminal and then transitions to the message reception waiting state (113).

As a result of the determination, when the terminal is capable of providing the multimedia broadcasting service (MBS), the terminal receives the S-CCPCH of the physical channel (114) and receives a detailed BMC message (see FIGS. 8 and 9) ( 115).

If there is another call processing such as a call signal, a voice call, etc. while receiving a multimedia broadcasting service (MBS) using the BMC proposed in the present invention (117), the terminal (mobile station (UE) 41) The additional service (call signal, voice call, etc.) is performed (118).

On the other hand, if there is no other call processing such as a call signal, voice call, etc. (117), the multimedia broadcasting service (MBS) using the BMC continues to be received (119).

When the user terminates the multimedia broadcasting service (MBS) (120), the terminal (mobile station (UE) 41) is in the standby state just before the multimedia broadcasting service (MBS) (121).

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

As described above, the present invention has the effect of providing a high speed multimedia broadcasting service using the limited radio resources in a next generation mobile communication system.

Claims (9)

In the multimedia broadcasting service method in a wireless communication system, A first step of registering a service for a subscriber who wants to receive a multimedia broadcasting service (MBS) through a wireless communication network; Converting, by the multimedia broadcasting service center, the multimedia content provided by the information provider into a broadcast / multicast control (BMC) message; And A third step of providing a multimedia broadcasting service (MBS) by broadcasting the broadcast / multicast control (BMC) message to a terminal through a broadcasting dedicated channel of the wireless communication network; Multimedia broadcasting service method using a broadcast-only channel in a wireless communication system comprising a The method of claim 1, A fourth step of the terminal authenticating the subscriber in association with the wireless communication network and providing the multimedia broadcasting service (MBS) to the authenticated subscriber; Multimedia broadcast service method using a broadcast-only channel in a wireless communication system further comprising. The method of claim 2, The fourth step, According to the user's multimedia broadcasting service request, the terminal transmits a Call Management Service (CM) service request message to a home location register (HLR) through a Node-B, a radio network controller (RNC), and a switching center (MSC). A fifth step; A sixth step in which the home location register (HLR) authenticates a subscriber and transmits an authentication result to the terminal through the switching center (MSC), the radio network controller (RNC), and a node B (Node-B); And A seventh step of providing the multimedia broadcasting service (MBS) only to the authenticated subscriber according to the authentication result of the sixth step Multimedia broadcasting service method using a broadcast-only channel in a wireless communication system comprising a. The method of claim 3, wherein The seventh step, According to the authentication result of the sixth step, when the terminal is capable of providing a multimedia broadcasting service (MBS), a detailed broadcast is received by receiving a secondary common control physical channel (S-CCPCH) of a physical channel. Receiving a multi-cast control (BMC) message, the multimedia broadcasting service method using a broadcast-only channel in a wireless communication system, characterized in that to provide a multimedia broadcasting service (MBS). The method of claim 4, wherein An eighth step of performing, by the terminal, a supplementary service when there is a call processing other than the multimedia broadcasting service (MBS) during the multimedia broadcasting service (MBS); Multimedia broadcast service method using a broadcast-only channel in a wireless communication system further comprising. The method of claim 4, wherein Eighth step, when the user terminates the multimedia broadcasting service (MBS), the terminal transitions to the standby state just before the multimedia broadcasting service (MBS) Multimedia broadcast service method using a broadcast-only channel in a wireless communication system further comprising. The method according to any one of claims 1 to 6, The broadcast / multicast control (BMC) message, Message Type field, Message ID for one Multimedia Broadcasting Service (MBS), Time Elapsed Time (Serial Number) for one Channel, Multimedia Broadcasting Service (MBS) Type Classification (Data Coding) Scheme), and a multimedia broadcasting service method using a broadcast-only channel in a wireless communication system, characterized in that it includes actual multimedia broadcasting service (MBS) content (MBS Data) information. In a wireless communication system having a processor for a multimedia broadcasting service, A first function of registering a service for a subscriber who wants to receive a multimedia broadcasting service (MBS) through a wireless communication network; A second function of converting multimedia content provided by an information provider into a broadcast / multicast control (BMC) message in a multimedia broadcasting service center; And A third function of providing a multimedia broadcasting service (MBS) by broadcasting the broadcast / multicast control (BMC) message to a terminal through a broadcasting dedicated channel of the wireless communication network; A computer-readable recording medium having recorded thereon a program for realizing this. The method of claim 8, A fourth function in which the terminal authenticates the subscriber in association with the wireless communication network and provides the multimedia broadcasting service (MBS) to the authenticated subscriber; A computer-readable recording medium that records a program for further realization.