KR101172265B1 - Method and System for Providing Multicast/Broadcast Service - Google Patents

Abstract

The present invention relates to a method and system for providing a multicast / broadcast service.

The present invention provides a method for maintaining a state of a wireless terminal receiving a multicast / broadcast service requiring bidirectional data transmission in an active state in a wireless communication network, the method comprising: (a) a multicast broadcast service center (MBSC); Receiving service information of a cast / broadcast service and a service participation intention confirmation message of the multicast / broadcast service; (b) storing the service information and transmitting the service participation intention confirmation message to the wireless terminal; (c) processing a subscriber authentication procedure of the wireless terminal to transmit the subscription request for the multicast / broadcast service of the wireless terminal to the MBSC to switch the state of the wireless terminal to the active state; Transmitting subscriber information to the MBSC; And (d) maintaining the active state of the wireless terminal receiving forward data from the MBSC in the active state after completing the participation application in the MBSC. Provide a way to.

According to the present invention, since a state of a wireless terminal receiving a multicast / broadcast service requiring bidirectional data transmission is kept in an active state, a call setup process is not performed during the reverse data transmission from the wireless terminal to the MBSC. In a multicast / broadcast service that requires fast forward data transmission, there is an effect that the wireless terminal speeds up reverse data transmission to the MBSC.

Multicast / Broadcast Service, Wireless Terminals, Wireless Networks, WiBro, Two-Way Data Transmission

Description

Method and System for Providing Multicast / Broadcast Service {Method and System for Providing Multicast / Broadcast Service}

1 is a block diagram schematically illustrating a system for providing a multicast / broadcast service according to a preferred embodiment of the present invention;

2 is a flowchart illustrating a process of providing a multicast / broadcast service according to a preferred embodiment of the present invention.

Description of the Related Art

100: PSS 110: WiBro base station

120: AAA 130: HA

140: MBSC 150: IP network

160: Internet

The present invention relates to a method and system for providing a multicast / broadcast service. More specifically, the present invention relates to a method and system for maintaining a state of a wireless terminal receiving a multicast / broadcast service requiring bidirectional data transmission in an active state in a wireless communication network.

As computer, electronic, and communication technologies have made rapid progress, various wireless communication services using wireless networks have been provided. Accordingly, a service provided by a mobile communication system using a wireless communication network is developing not only a voice service but also a multimedia communication service for transmitting data such as circuit data, packet data, and the like. Due to the development of the wireless communication network, it is possible to use a digital multimedia broadcasting (DMB) service or a portable Internet service (Wibro, hereinafter referred to as WiBro) as a wireless terminal. The wireless communication network implementing the DMB service and the portable Internet service supports two-way data transmission.

A wireless communication network supporting bidirectional data transmission maintains an idle state of a wireless terminal receiving a DMB service. When a wireless terminal requires reverse data transmission with a broadcasting server due to reasons such as purchase of a product broadcasted on a shopping channel of the DMB service and acquisition of background information such as a drama or a music video broadcasted on the DMB service. When the wireless terminal transmits the reverse data, the wireless terminal must proceed from the beginning with the wireless communication network in order to transmit the reverse data to the broadcast server.

In addition, MBS (Multicast Broadcast Service) for wireless networks including WiBro, CDMA 2000 1x EV-DO (1x Evolution-Data Optimized), CDMA 2000 1X, Wideband CDMA (W-CDMA), etc. When the system is implemented, the wireless terminal uses the multicast / broadcast service in the wireless communication network which mediates the packet data transmission in order to use the battery and use the system resources of the wireless terminal. It is likely to remain idle. For this reason, whenever a wireless terminal receiving forward data of a multicast / broadcast service wants to perform reverse data transmission with the corresponding service, a call establishment process including a wireless communication network and a subscriber authentication procedure must be performed from the beginning. Here, the multicast / broadcast service is a point-to-multipoint service that transmits forward data from one source to multiple receivers. Multiple receivers transmit the same data through a common radio channel for efficient use of radio resources. It is a data providing service including a broadcast and a game to be transmitted to. In addition, the reverse data is data transmitted by the wireless terminal to the multicast broadcast service center (MBSC) through the base station, and the forward data refers to multicast / broadcast service data transmitted by the MBSC to the wireless terminal, and the wireless terminal is forward data. The wireless terminal is in an idle state when receiving the signal, that is, when receiving the multicast / broadcast service.

Such a multicast / broadcast service system is idle in providing a multicast / broadcast service that needs to quickly perform reverse data transmission in the future, for example, an auction service and an online game, such as a service requiring bidirectional data transmission in real time. Since the wireless terminal in the state takes a long time to set up the call for the reverse data transmission to the wireless network, it cannot provide the fast multicast / broadcast service to the wireless terminal user.

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a method and system for maintaining a state of a wireless terminal receiving a multicast / broadcast service requiring bidirectional data transmission in an active state in a wireless communication network. There is this.

Accordingly, according to a first object of the present invention, there is provided a method for maintaining a state of a wireless terminal that is provided with a multicast / broadcast service requiring bidirectional data transmission in an active state in a wireless communication network. Receiving service information of the multicast / broadcast service and a service participation intention request message of the multicast / broadcast service from a multicast broadcast service center; (b) storing the service information and transmitting the service participation intention confirmation message to the wireless terminal; (c) processing a subscriber authentication procedure of the wireless terminal to transmit the subscription request for the multicast / broadcast service of the wireless terminal to the MBSC to switch the state of the wireless terminal to the active state; Transmitting subscriber information to the MBSC; And (d) maintaining the active state of the wireless terminal receiving forward data from the MBSC in the active state after completing the participation application in the MBSC. Provide a way to.

According to a second object of the present invention, there is provided a system for providing a multicast / broadcast service requiring bidirectional data transmission, comprising: a wireless terminal using the multicast / broadcast service; Storing the service information of the multicast / broadcast service, transmitting a service participation intention confirmation message of the multicast / broadcast service to the wireless terminal, and receiving the forward data of the multicast / broadcast service; A wireless communication network for maintaining a state of a terminal in an active state including an Always mode and an Awake mode; And a multicast broadcast service center (MBSC) which transmits the service information and the service participation intention confirmation message to the wireless communication network and transmits the forward data to the wireless terminal applying for participation in the multicast / broadcast service. It provides a system for providing a multicast / broadcast service, characterized in that it comprises a.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a block diagram schematically illustrating a system for providing a multicast / broadcast service according to a preferred embodiment of the present invention.

A system for providing a multicast / broadcast service according to a preferred embodiment of the present invention is a PSS (Portable Subscriber Station) 100, a WiBro base station 110, a subscriber authentication server (AAA: Authentication, Authorization, Accounting, hereinafter 'AAA'). "120", a Home Agent (HA) 130, a Multicast Broadcast Service Center (MBSC) 140, an IP network 150, the Internet 160, and the like.

For convenience of description of the present invention, the wireless communication network of the system for providing a multicast / broadcast service according to a preferred embodiment of the present invention is a WiBro base station 110, AAA 120, HA 130, IP network 150 The wireless communication network according to the preferred embodiment of the present invention is not limited thereto, but the wireless communication network according to the preferred embodiment of the present invention is not limited thereto. CDMA 2000 1x EV-DO (1x Evolution-Data Optimized), CDMA 2000 1X, and W-CDMA (Wideband CDMA) ), W-LAN (Wireless LAN), and the like.

The PSS 100 refers to a portable terminal that provides a packet data service to a mobile Internet service subscriber using the IP network 150. The PSS 100 is a low power RF / Intermediate Frequency (IF) module and controller function, service characteristics, and propagation. It has MAC (Media Access Control) frame variable control function, hand over function, authentication and encryption function according to the environment. To this end, the PSS 100 has a built-in browser for accessing the Internet.

The PSS 100 according to the present invention is a terminal subscribed to a multicast / broadcast service requiring bidirectional data transmission. The PSS 100 is configured to manage the WiBro base station 110 while receiving forward data of the multicast / broadcast service. Personal digital assistant (PDA), hand-held PC, notebook, smart to keep the active state and transmit the reverse data without proceeding with call setup in reverse data transmission to MBSC 140 It may be a phone, a multi-mode multi-band (MM-MB) terminal, or the like. Here, a smart phone is a terminal that combines the advantages of a mobile communication terminal and a personal portable terminal, and refers to a terminal incorporating data communication functions such as schedule management, fax transmission and reception, which are functions of a personal portable terminal, in a mobile communication terminal. In addition, a multi-mode multi-band terminal is a terminal that can operate in both a portable Internet system and other mobile communication systems (for example, CDMA2000, WCDMA system, etc.) by embedding a multi-modem chip.

For convenience of description of the present invention, a wireless terminal according to a preferred embodiment of the present invention is a personal digital assistant (PDA), a hand-held (Hand-Held) PC, a notebook, a smart phone, a multimode multiband (MM). -MB: Although limited to the PSS 100 including a Multi Mode-Multi Band (MS) terminal, the wireless terminal according to the preferred embodiment of the present invention is not limited thereto. CDMA 2000 1xEV-DO, CDMA 2000 1X, W-CDMA GSM (Global System for Mobile) phones, W-CDMA (Wideband CDMA) phones, CDMA-2000 phones, which have subscribed to multicast / broadcast services that require two-way data transmission in wireless communication networks, including W-LAN, MBS (Mobile Broadband System) phone, DMB (Digital Multimedia Broadcasting) phone and the like.

WiBro base station 110 includes a Radio Access Station (RAS) (not shown) and an Access Control Router (ACR) (not shown).

The RAS (not shown) is a base station of the WiBro system, and wirelessly transmits data received from the ACR (not shown) to the PSS 100, and includes a low power RF / IF module and a controller function, and orthogonal frequency division multiplexing (OFDM) / TDD. (Time Division Duplex) Packet scheduling, channel multiplexing function, MAC frame variable control function according to service characteristics and propagation environment, 50 Mbps high-speed traffic real-time control function, handover function.

In addition, the PSS 100 and RAS (not shown) have a 50 Mbps packet transmission modulation and demodulation function, a high speed packet channel coding function, a real time modem control function, and the like for data transmission.

ACR (not shown) is a packet access router that accommodates a plurality of RAS (110) has a handover control function between the RAS (110), handover function between the ACR (120), packet routing function, Internet access function, IP Is connected to the network 150.

In the present invention, the WiBro base station 110 receives the service information of the multicast / broadcast service and the service participation intention confirmation message of the multicast / broadcast service transmitted from the MBSC 140, recognizes and stores the service information, and participates. The intention confirmation message is transmitted to the PSS 100, which is a wireless terminal subscribed to the multicast / broadcast service. Here, the service information of the multicast / broadcast service is information including a data transmission method and a multicast / broadcast service list, and the like. The service information in the present invention is a bidirectional data transmission method and a multicast / broadcast service list. It includes.

In order to transmit the participation request of the multicast / broadcast service to the MBSC 140 in the PSS 100 receiving the service participation intention confirmation message, the WiBro base station 110 processes the subscriber authentication procedure of the PSS 100 to perform the PSS ( The state of 100 is switched to the active state, and the subscriber information of the PSS 100 is transmitted to the MBSC 140.

When the PSS 100 receives the forward data of the multicast / broadcast service, the WiBro base station 110 maintains the state of the PSS 100 in an active state including the Always mode and the Awake mode to receive the forward data. When the reverse data is transmitted to the MBSC 140 at 100, the reverse data of the wireless terminal is received and transmitted to the MBSC 140 without proceeding with the call setup process including the subscriber authentication procedure.

On the other hand, when the WiBro base station 110 terminates the multicast / broadcast service in the MBSC 140 or receives a deletion request of the PSS 100 from the multicast / broadcast service list from the MBSC 140, Transition state from active state to idle state.

The AAA 120 interoperates with the WiBro base station 110 to charge the packet data used by the PSS 100, and authenticates the connection from the PSS 100.

The HA 130 performs routing for transmitting a packet from an external packet data service server such as the Internet 160 and the MBSC 140.

The MBSC 140 provides forward data to one or more wireless terminals included in the multicast / broadcast service list, and in the present invention, service information and service participation including a bidirectional data transmission method and a multicast / broadcast service list, and the like. The doctor confirms a request message to the PSS 100 via a wireless communication network including a WiBro network, and provides forward data to the PSS 100 that has applied for service participation.

The IP network 150 connects the WiBro base station 110, the AAA 120, the HA 130, and the MBSC 140, and receives the packet data from an external packet data service such as the Internet 160. To 110.

2 is a flowchart illustrating a process of providing a multicast / broadcast service according to a preferred embodiment of the present invention.

The service information transmitted from the MBSC 140 that provides the multicast / broadcast service and the service participation request confirmation message of the multicast / broadcast service are displayed in WiBro network, CDMA 2000 1x Evolution-Data Optimized (1xEV-DO), and CDMA. 2000 is received in a wireless communication network including 1X, wideband CDMA (W-CDMA), wireless LAN (W-LAN), and the like (S205). Here, the WiBro network includes a WiBro base station 110, an AAA 120, an HA 130, and an IP network 150. In addition, the service information includes a bidirectional data transmission scheme and a multicast / broadcast service list.

The wireless communication network stores service information to distinguish the data transmission method of the multicast / broadcast service provided by the MBSC 140, and the PSS 100, GSM phone, W-CDMA phone, CDMA-2000 phone, and MBS phone In operation S210, the service participation intention confirmation message is transmitted to the wireless terminal including the DMB phone.

If the wireless terminal that has received the service participation intention confirmation request message does not apply to participate in the multicast / broadcast service, the wireless communication network maintains the state of the wireless terminal upon reception of the service participation intention confirmation message.

When the wireless terminal makes an application for participation, the wireless communication network processes the subscriber authentication procedure of the wireless terminal in order to transmit the multicast / broadcast service participation request to the MBSC 140 in the wireless terminal to make the wireless terminal state active. The mobile station switches and transmits subscriber information of the wireless terminal to the MBSC 140 (S220 and S225).

The wireless communication network maintains the state of the wireless terminal receiving the forward data in an active state after completing the participation application (S230). The wireless communication network maintains the state of the wireless terminal receiving the forward data at the wireless terminal in an active state, and when the wireless terminal transmits the reverse data to the MBSC 140, the call setup process of the wireless terminal was performed in the conventional reverse data transmission. Receive the reverse data of the wireless terminal without proceeding and transmits to the MBSC (140) (S235, S240).

The wireless communication network maintains the state of the wireless terminal in an active state until the multicast / broadcast service ends or the MBSC 140 requests the deletion of the wireless terminal from the service list, and the multicast / broadcast service ends or the MBSC 140. When requesting the deletion of the wireless terminal from the service list, the state of the wireless terminal is switched to the idle state (S245, S250).

If the wireless communication network according to the preferred embodiment of the present invention is a WiBro network, the WiBro base station 110 performs the functions performed by the wireless communication network in the method, and the wireless terminal is limited to the PSS 100.

The description above is merely illustrative of the technical idea of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, the call setup process is performed during the reverse data transmission from the wireless terminal to the MBSC by maintaining the state of the wireless terminal receiving the multicast / broadcast service requiring the bidirectional data transmission in an active state. In the multicast / broadcast service, which requires fast bi-directional data transmission, the wireless terminal has an effect of speeding up reverse data transmission to the MBSC.

Claims (16)

delete delete A method of maintaining a state of a wireless terminal receiving a multicast / broadcast service requiring bidirectional data transmission in an active state in a wireless communication network, (a) receiving, at a base station, service information of the multicast / broadcast service and a service participation confirmation request message of the multicast / broadcast service from a multicast broadcast service center (MBSC); (b) storing the service information at the base station and transmitting the service participation intention confirmation message to the wireless terminal; (c) the base station processes the subscriber authentication procedure of the wireless terminal to transmit the subscription request for the multicast / broadcast service of the wireless terminal to the MBSC, and switches the state of the wireless terminal to the active state; Transmitting subscriber information of the wireless terminal to the MBSC; And (d) maintaining, by the base station, the state of the wireless terminal receiving forward data from the MBSC in the active state after completing the participation request with the MBSC; Including, but the wireless network includes a wireless network, CDMA 2000 1x EV-DO (1x Evolution-Data Optimized), CDMA 2000 1X, W-CDMA (Wideband CDMA), W-LAN (Wireless LAN) If the WiBro network includes the WiBro base station, AAA (Authentication, Authorization, Accounting), HA (Home Agent) and IP network, the function of the wireless communication network includes a Radio Access Station (RAS) and an Access Control Router (ACR). The method for providing a multicast / broadcast service, characterized in that performed in the WiBro base station. The method of claim 3, wherein The wireless terminal includes a PSS (Portable Subscriber Station), a Global System for Mobile (GSM) phone, a Wideband CDMA (W-CDMA) phone, a CDMA-2000 phone, a Mobile Broadband System (MBS) phone, and a Digital Multimedia Broadcasting (DMB) phone. Method for providing a multicast / broadcast service, characterized in that it comprises a. The method of claim 4, wherein  If the wireless communication network is a WiBro network, the wireless terminal may be a personal digital assistant (PDA), a hand-held PC, a notebook computer, a smartphone, a multi-mode multi-band (MM-MB). The PSS (Portable Subscriber Station) comprising a terminal for providing a multicast / broadcast service. The process of claim 3, wherein in steps (a) and (b) The service information includes a bidirectional data transmission scheme and a multicast / broadcast service list. A method of maintaining a state of a wireless terminal receiving a multicast / broadcast service requiring bidirectional data transmission in an active state in a wireless communication network, (a) receiving, at a base station, service information of the multicast / broadcast service and a service participation intention request message of the multicast / broadcast service from an MBSC; (b) storing the service information at the base station and transmitting the service participation intention confirmation message to the wireless terminal; (c) the base station processes the subscriber authentication procedure of the wireless terminal to transmit the subscription request for the multicast / broadcast service of the wireless terminal to the MBSC, and switches the state of the wireless terminal to the active state; Transmitting subscriber information of the wireless terminal to the MBSC; (d) maintaining, by the base station, the state of the wireless terminal receiving forward data from the MBSC in the active state after completing the participation application with the MBSC; (e) when the wireless terminal transmits reverse data to the MBSC, the base station does not perform a call setup procedure including the subscriber authentication procedure of the wireless terminal performed by the base station in the conventional reverse data transmission. Transmitting the reverse data to the MBSC; And (f) transitioning the state of the wireless terminal to an idle state when the base station terminates the multicast / broadcast service or when the MBSC requests the deletion of the wireless terminal from the multicast / broadcast service list; Method for providing a multicast / broadcast service comprising a. delete delete delete In a system providing a multicast / broadcast service requiring bidirectional data transmission, A wireless terminal using the multicast / broadcast service; Storing the service information of the multicast / broadcast service, transmitting a service participation intention confirmation message of the multicast / broadcast service to the wireless terminal, and receiving the forward data of the multicast / broadcast service; A wireless communication network including a base station for maintaining a state of a terminal in an active state including an Always mode and an Awake mode; And Multicast Broadcast Service Center (MBSC) which transmits the service information and the service participation intention confirmation message to the wireless communication network and transmits the forward data to the wireless terminal applying for participation in the multicast / broadcast service. Including, but the wireless network includes a wireless network, CDMA 2000 1x EV-DO (1x Evolution-Data Optimized), CDMA 2000 1X, W-CDMA (Wideband CDMA), W-LAN (Wireless LAN) If the WiBro network includes the WiBro base station, AAA (Authentication, Authorization, Accounting), HA (Home Agent) and IP network, the multicast / broadcast service performs the function of the wireless communication network at the WiBro base station. System to provide. The method of claim 11, wherein The WiBro base station provides a multicast / broadcast service, characterized in that it comprises a Radio Access Station (RAS) and an Access Control Router (ACR). The method of claim 11, wherein The WiBro base station receives the reverse data and transmits the reverse data to the MBSC without transmitting a call setup process including subscriber authentication when the wireless terminal transmits reverse data to the MBSC. System that provides services. The method of claim 11, wherein The WiBro base station switches the state of the wireless terminal from an active state to an idle state when the multicast / broadcast service is terminated or when a request for deleting the wireless terminal is received from the MBSC in the multicast / broadcast service list. A system that provides multicast / broadcast services. The method of claim 11, wherein The wireless terminal includes a PSS (Portable Subscriber Station), a Global System for Mobile (GSM) phone, a Wideband CDMA (W-CDMA) phone, a CDMA-2000 phone, a Mobile Broadband System (MBS) phone, and a Digital Multimedia Broadcasting (DMB) phone. System for providing a multicast / broadcast service, characterized in that it comprises a. 15. The method of claim 14, If the wireless communication network is the WiBro network, the wireless terminal may be a personal digital assistant (PDA), a hand-held PC, a notebook computer, a smartphone, a multi-mode multiband (MM-MB). Band) A system for providing a multicast / broadcast service, characterized in that it is a portable subscriber station (PSS) including a terminal.

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