KR100747706B1 - Method and system for providing download service on demand for multicast service - Google Patents

Abstract

A method for supplying an on-demand download service in a multicast service and a system therefor are provided to transmit a contents download notify message to users existing in the same cell and user terminals when random contents are downloaded through the user terminals, thus various users can download the same contents at the same time. When user terminal clients(100) conduct contents registration by selecting desired contents and the transmission time when users wants to receive the contents after accessing a web server(124), a notification message is transmitted to more than one subscriber terminal client of RASs(Radio Access Stations) where the user terminal clients are located. Until the transmission time comes, download request response messages are received from the subscriber terminal clients who receive the notification message. At the transmission time, the contents are simultaneously transmitted to the user terminal clients and the subscriber terminal clients.

Description

Method and System for Providing Download Service on Demand for Multicast Service}

1 is a block diagram showing a system for providing an on-demand download service in a multicast service according to an embodiment of the present invention;

2 is a flowchart illustrating a process of providing an on-demand download service in a multicast service according to an exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: user terminal client 110: mobile communication network

120: multicast regional server 122: multicast main server

124: Web Server 126: Database Server

128: content storage server 130: user / content management server

The present invention relates to a method and system for providing an on-demand download service in a multicast service. More specifically, in case of downloading arbitrary content through a user terminal in a system using broadcast and multicast using a mobile communication network, the same content may be transmitted by transmitting a content download notification message to a user in the same cell as the user terminal. The present invention relates to a method and a system for providing an on-demand download service in a multicast service that induces downloading to multiple users at the same time to create a joint purchase effect.

As the electronic and communication technologies are rapidly developed and various contents are mass-produced, various wireless communication services using a wireless network have been provided. The most basic wireless communication service is a wireless voice call service that provides a voice call to a mobile terminal user wirelessly, which can provide a service regardless of time and place. In addition, while providing a text message service to complement the voice call service, a wireless Internet service has recently emerged to provide an Internet communication service to a user of a mobile communication terminal through a wireless communication network.

As a result of the development of mobile communication technology, a service provided by a code division multiple access (CDMA) mobile communication system is not only a voice service but also transmits data such as circuit data and packet data. It is developing into a multimedia communication service.

In addition, recently, IMT-2000 (International Mobile Telecommunication 2000) (eg, CDMA2000 1X, 1xEV-DO, WideBand CDMA), etc., which is a third generation mobile communication system that has been established as a standard by ITU-R due to the development of information communication ) Is commercially available. IMT-2000 is CDMA2000 1X, 1xEV-DO, WCDMA (WideBand CDMA), etc. Data that can be supported in IS-95A and IS-95B networks by using IS-95C network that has evolved from IS-95A and IS-95B networks. It is a wireless communication service that can provide wireless Internet at transmission speeds of up to 144 Kbps to 2.4 Mbps, much faster than the transmission speed of 14.4 Kbps or 56 Kbps. In particular, by using IMT-2000 service, it is possible to provide various multimedia services (AOD, VOD, etc.) at higher speed as well as improving existing voice and WAP service quality. In addition, a multicast broadcast service capable of producing content at a broadcasting station and using the high speed of a mobile communication network is possible.

However, in case of moving the existing mobile communication system, since the base station (BS) is expensive to construct, wireless internet is expensive and the screen size of the mobile communication terminal is small, thereby limiting the contents that can be displayed. There is a limit to providing high-speed wireless Internet. In addition, wireless local area network (WLAN) technology has limitations in providing various services in a wider area due to problems such as radio wave interference and a narrow coverage area. As a result, a high-speed portable Internet (WiBro: Wireless Broadband or HPi: High-Speed Portable internet) system has emerged, which enables more comprehensive portability and mobility, and can use high-speed wireless Internet service at a low cost.

The portable Internet system uses a 2.3 GHz frequency band, uses a time division duplex (TDD) as a duplex method, and orthogonal frequency division multiple access (OFDMA) as an access method. In addition, it provides mobility of 60km / h per hour, and the downlink transmission rate is 24.8 Mbps, but the uplink transmission rate is 5.2 Mbps, which is an IP (Internet Protocol) based wireless data system having up and down asymmetric transmission characteristics.

In such a conventional mobile communication network, in order for several users to receive the same information or data, each user must use a dedicated channel. For example, when transmitting real-time news in a service based on a 1xEV-DO network such as June or Fimm, even if multiple users are serviced at the same time through the same base station, a separate channel is allocated to each user. do. At this time, since the data transmitted through each channel is the same content, it is very inefficient to use the insufficient radio resources. In this case, if the same information can be transmitted to multiple users at the same time through one channel, the efficiency of the network increases.

On the other hand, BCMCS (1xEV-DO), MBMS (HSDPA), MBS (WiBro) is a technology that enables the efficient transmission of the same information to multiple users in a mobile communication network. In general, a method of sending the same information to multiple users using one channel is called broadcast or multicast. Since this method is effective to allow many people to watch the content at the same time, it is common to service regularly scheduled content as if it is broadcasted on TV. However, in the case of a broadcast service, various contents are required to be transmitted through many channels in order to satisfy various demands of users. However, there is a problem in that a mobile communication network cannot provide so many channels due to capacity problems.

SUMMARY OF THE INVENTION An object of the present invention is to transmit the same content by transmitting a content download notification message to a user in the same cell as the user terminal when downloading arbitrary content through the user terminal in a system providing broadcast and multicast using a mobile communication network. The present invention provides a method and system for providing an on-demand download service in a multicast service that induces downloads to multiple users at the same time to create a joint purchase effect.

In order to achieve the above object, the method and system for providing the on-demand download service in the multicast service according to the present invention has the following features.

The present invention provides a method for providing an on-demand download service in a multicast service. (A) When a user terminal client accesses a web server and selects a desired content and a transmission time to receive the content, the user registers the content. Transmitting a notification message to one or more subscriber station clients of the base station where the terminal client is located; (b) receiving a download request response message from the subscriber station client that has received the notification message until the transmission time is reached; And (c) simultaneously transmitting the contents to the user terminal client and the subscriber terminal client that has transmitted the download request response message when the transmission time arrives. It provides a method of providing.

The present invention provides a system for providing an on-demand download service in a multicast service, comprising: a web server performing a function of registering a content when a user terminal client connects and selects a desired content and a transmission time for receiving the content; And upon receiving notification of registration of the content from the web server, transmitting a notification message to one or more subscriber station clients of the base station where the user terminal client is located, and receiving the notification message until the transmission time is reached. Receiving a download request response message from the terminal client, and transmitting the content simultaneously to the user terminal client and the subscriber terminal client transmitting the download request response message when the transmission time arrives. A system for providing an on-demand download service in a multicast service is provided.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when a detailed description of a related well-known configuration or function is apparent to those skilled in the art, or it is determined that the subject matter of the present invention may be obscured, the detailed description thereof will be omitted.

1 is a block diagram showing a system for providing an on-demand download service in a multicast service according to an embodiment of the present invention.

As shown in FIG. 1, a system for providing an on-demand download service in a multicast service according to an exemplary embodiment of the present invention includes a user terminal client 100, a mobile communication network 110, and a multicast regional server (MRS). Server (120), Multicast Main Server (MTS) 122, Web Server (WEBS: Web Server) 124, Database Server (DBS: Database Server) 126, Content Storage Server (CSS: Contents Storage Server (128) and a User / Contents Management Server (UMS / CMS) 130 may be included.

The user terminal client 100 according to an exemplary embodiment of the present invention is a personal subscriber terminal provided with a data service including various multimedia services through the mobile communication network 120 and the Internet. The user terminal client 100 according to an exemplary embodiment of the present invention connects to a web server 124 to be described later, selects a content and a transmission time to receive the content, and requests the registration of the content. Meanwhile, when the third user terminal client 100 that has received the notification message for content registration through the mobile communication network 120 wants to purchase the received content, the third user terminal client 100 will be described later through the mobile communication network 120. Send to web server 124.

The user terminal client 100 according to the preferred embodiment of the present invention is a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, GSM (Global System for Mobile) phone, W-CDMA (Wideband CDMA) phone , CDMA-2000 phone, Mobile Broadband System (MBS) phone, notebook computer and the like.

The mobile communication network 120 according to the preferred embodiment of the present invention may include a 1xEV-Do network, a CDMA network, a WCDMA network and a portable Internet network (WIBRO), and provides a mobile communication service to the user terminal client 100. Any network can be used if you can.

When the multicast server according to the preferred embodiment of the present invention is notified of the content registration from the user / content management server 130, which will be described later, a notification message to one or more subscriber station clients of the base station where the user terminal client 100 is located. Transmits, and receives a download request response message from the subscriber station client that has received the notification message until the transmission time. At this time, when the transmission time is reached, the user terminal client 100 and the subscriber terminal client transmitting the download request response message are simultaneously transmitted.

On the other hand, when a handoff occurs in the user terminal client 100 or the subscriber terminal client transmitting the aforementioned download request response message, at least one subscriber terminal of the handed off cell in the multicast server according to the preferred embodiment of the present invention. Send a notification message to the client, and receives a download request response message until the registered transmission time from the subscriber client of the handed off cell.

Meanwhile, a predetermined time before the registered transmission time, the multicast server performs a function of transmitting a download notification message to the user terminal client 100 and the subscriber terminal client that has transmitted the download request response message.

Here, the multicast server according to the preferred embodiment of the present invention includes a multicast local server 120 and a multicast main server 122.

The multicast regional server 120 according to the preferred embodiment of the present invention is located at the end of the mobile communication network 120 and transmits a notification message to one or more subscriber station clients of the base station where the user terminal client 100 is located. The download request response message is received from the subscriber station client that has received the notification message until the transmission time. When the transmission time reaches the registered time, the multicast address is attached to the content registered by the user terminal client 100 and the subscriber terminal client that has transmitted the download request response message.

When the multicast main server 122 according to the preferred embodiment of the present invention is notified of the registration of the content from the user / content management server 130 to be described later, the multicast local server 120 notifies the notified of the registered facts. Tunnels the content stored in the content storage server 128 to the user terminal client 100 and the multicast local server 120 where the subscriber terminal client that transmitted the download request response message is located.

Web server 124 according to a preferred embodiment of the present invention, if the user terminal client 100 according to a preferred embodiment of the present invention selects a transmission time to receive the desired content and content, the user / content management server By notifying 130, a registration function of the selected content is performed.

The database server 126 according to the preferred embodiment of the present invention performs a function of storing information related to the multicast service according to the preferred embodiment of the present invention, and the content storage server 128 according to the preferred embodiment of the present invention. Stores the arbitrary content and transmits the stored content to the multicast server according to the preferred embodiment of the present invention when a request is made.

A user / content management server (UMS / CMS) 130 according to a preferred embodiment of the present invention is a service login of a user, a location of a user, service contents requested by the user, contents registered in a service, and the like. The multicast main server 122 is notified if there is content registered through the web server 124.

Meanwhile, in the preferred embodiment of the present invention, the web server 124 and the user / content management server are separately configured for convenience of description, but the present invention is not limited thereto. The web server 124 and the user / content management server 130 are not limited thereto. It is also possible to configure and integrate the functions of a single server.

2 is a flowchart illustrating a process of providing an on-demand download service in a multicast service according to an exemplary embodiment of the present invention.

First, the user terminal client 100 accesses the web server 124 according to the preferred embodiment of the present invention and requests registration with a time to receive and transmit the desired content AA on the web server 124. (S200). When such content registration is performed in the web server 124 according to the preferred embodiment of the present invention, the multicast main server 122 according to the preferred embodiment of the present invention is a multicast local server (where the user terminal client 100 is located). In step 120, the multicast regional server 120 according to a preferred embodiment of the present invention transmits a notification message to one or more subscriber station clients of the base station where the user terminal client 100 is located (S202).

Upon receiving the notification message, the subscriber station client transmits a download request response message if it wants to receive the content registered by the user terminal client 100 (S204).

At this time, if the user terminal client 100 or the subscriber terminal client agreeing to purchase the content is handed off, the above-described notification message is also transmitted to the subscriber terminal client of the cell which has been handed off (S206). The users of the corresponding cell express their intention to purchase through a response to the notification message as shown in S204 (S208).

The process of S204 to S208 is repeated until the registration time registered by the user terminal client 100 (S210).

Prior to the registration time registered by the user terminal client 100, the multicast server according to the preferred embodiment of the present invention transmits a download notification message to the user terminal client 100 and the subscriber terminal client that has transmitted the download request response message ( S212). Thereafter, when the registration time registered by the user terminal client 100 is reached, the multicast server according to the preferred embodiment of the present invention simultaneously transmits the content to the user terminal client 100 and the subscriber terminal client (S214).

The above description is merely illustrative of the present invention, and those skilled in the art to which the present invention pertains may various modifications without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed herein are not intended to limit the present invention but to describe the present invention, and the spirit and scope of the present invention are not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all the technologies within the equivalent scope should be interpreted as being included in the scope of the present invention.

According to the present invention, the number of users receiving the same content at the same time in the same cell is increased. As such, when the number of users who decide to receive the same content at the same time is increased, the users can be proportionally proportioned to each user through a joint purchase effect. It is effective in lowering the price of the content paying.

Claims (8)

In the multicast service to provide an on-demand download service, (a) When a user terminal client selects a desired content and a transmission time to receive the content by accessing a web server and registers the content, the user terminal client transmits a notification message to one or more subscriber terminal clients of the base station where the user terminal client is located. step; (b) receiving a download request response message from the subscriber station client that has received the notification message until the transmission time is reached; And (c) simultaneously transmitting the content to the user terminal client and the subscriber terminal client that has transmitted the download request response message when the transmission time arrives; Method for providing an on-demand download service in a multicast service comprising a. The method of claim 1, After step (b), When a handoff occurs in the user terminal client or the subscriber terminal client that has transmitted the download request response message, a notification message is sent to one or more of the subscriber terminal clients of the handed off cell and the subscriber of the handed off cell. And receiving the download request response message from the client until the transmission time is reached. The method of claim 1, After step (b), (b1) transmitting a download notification message to the user terminal client and the subscriber terminal client which has transmitted the download request response message before a certain time before the transmission time. Method for providing an on-demand download service in a multicast service, characterized in that it further comprises. In the system for providing on-demand download service in the multicast service, A web server configured to register a content when a user terminal client accesses and selects a desired content and a transmission time to receive the content; And Upon receiving notification of registration of the content from the web server, the subscriber station transmits a notification message to one or more subscriber station clients of the base station where the user terminal client is located, and receives the notification message until the transmission time is reached. A multicast server that receives a download request response message from a client and simultaneously transmits the content to the user terminal client and the subscriber terminal client that transmitted the download request response message when the transmission time arrives. System for providing an on-demand download service in a multicast service comprising a. The method of claim 4, wherein A content storage server storing the content and transmitting the content to the multicast server upon request System for providing an on-demand download service in a multicast service, characterized in that it further comprises. The method of claim 5, The multicast server, Located at an end of a mobile communication network, from the subscriber station client that transmits the notification message to one or more of the subscriber station clients of the base station where the user terminal client is located, and receives the notification message until the transmission time is reached. A multicast local server that receives the download request response message and simultaneously transmits the content to the user terminal client and the subscriber terminal client that transmitted the download request response message when the transmission time arrives; And When the registration information of the content is notified from the web server, the registration fact is notified to the multicast local server, and the subscriber terminal client that transmits the content of the content storage server to the user terminal client and the download request response message is transmitted. Multicast main server tunneling to the multicast regional server located System for providing an on-demand download service in a multicast service comprising a. The method of claim 4, wherein When a handoff occurs in the user terminal client or the subscriber station client that has transmitted the download request response message, the multicast server transmits a notification message to one or more of the subscriber station clients of the handed-off cell and handoffs the message. And receiving the download request response message until the transmission time is reached from the subscriber client of the established cell. The method of claim 4, wherein Any time before the transmission time, the multicast server transmits a download notification message to the user terminal client and the subscriber terminal client that has transmitted the download request response message. System to provide.

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