Lg Electronics Inc.

Min-Jung Shon

Dong-Hee Shim

Kyu-Sung Han

Sung-Mu Son

Te-Hyun Kim

Seung-Jae Lee

Youn-Sung Chu

A method, system and terminal for changing an MO of a broadcast service guide. The method for changing an management object (MO) of a broadcast service guide includes: installing an MO tree by a terminal upon receiving a service guide for which at least one management object has been formed from a broadcast server; changing by the terminal a corresponding MO upon receiving a change-requested parameter of the service guide MO from a DM server; and updating by the terminal a corresponding portion of the service guide based on the changed MO. When the subscriber terminal which has received the broadcast service has a problem or needs to be updated, the problem of the terminal can be remotely, quickly and easily solved by correcting the change-requested parameter of the MO of the service guide of the terminal side according to a request of the server or the terminal.

Method, system and terminal for changing a management object of broadcast service guide

A method, system, and terminal for handling or processing roaming errors between networks that can support broadcast services. When a roaming service between networks is requested, if a user authentication request is unsuccessful due to non-matching identification information between the networks, a corresponding error message is delivered to the subscriber terminal and network information that has been recently updated using various methods is provided such that repetitive requests and responses for authentication can be avoided when the subscriber requests a roaming service, and thus a roaming service between networks can be quickly provided without delays.

Method of roaming in broadcast service and system and terminal thereof

A method and system for providing a broadcast/multicast (BCAST) service, are provided. The method includes obtaining, by the terminal, at least one BCAST service from a visiting network when the terminal roams in the visiting network.

Broadcast/multicast service system and method providing inter-network roaming

A method of providing a broadcast/multicast (BCAST) service, the method including receiving, from a terminal, a request of access to a BCAST service, performing service authorization with a home network, delivering, to the terminal, a message including a rights object (RO) to access the BCAST service, if the terminal is authorized to receive the BCAST service as a result of the service authorization, and providing the BCAST service to the terminal that was authorized to receive the BCAST service.

A method and device for providing a broadcast/multicast service are discussed. According to an embodiment, the invention provides a method comprising: receiving, by a client module, a service guide including contents information with respect to one or more contents from a broadcast/multicast server; transmitting, by the client module, a broadcast/multicast request message with respect to contents selected by a user of a specific terminal among the contents information included in the received service guide to the broadcast/multicast server; transmitting, by the client module, a location tracking request message with respect to the specific terminal to a network entity; receiving a response message with respect to the location tracking request message, the response message including a location tracking result from the network entity; transmitting, by the client module, location information of the specific terminal to the broadcast/multicast server.

Broadcast/multicast service method based on user location information

A method and device for receiving a broadcast/multicast service as discussed. According to an embodiment, the invention provides a method of receiving a broadcast/multicast service by a terminal, the method comprising: receiving a service guide from a network including a broadcast/multicast server, the service guide being used by a user to select specific contents related to a broadcast/multicast service; transmitting information on the contents selected by the user, to the network; transmitting a content request to the network; and receiving contents from the network in response to the content request, wherein the received contents were further selected, among the contents selected by the user, by the broadcast/multicast server that performed an exact location tracking of the terminal to enable location based filtering of services corresponding to the contents selected by the user.

A broadcast/multicast (BCAST) service, specifically, a BCAST service system for transmitting broadcast contents to terminals when a network load is small and a contents transmission method using the same are disclosed. When contents are broadcast by using a distribution window (DM) and a presentation window (PW), the terminals feed back a message indicating reception confirmation of the contents to the network, such that the contents reception success rate between the terminals and the network can be improved.

BCAST service system and contents transmission method using the same

A device management method using a broadcast channel which is capable of simultaneously initializing services provided to a plurality of terminals, varying set values of the plurality of terminals, or upgrading part of software, the method comprising: receiving bootstrap information including data (content) for connecting to a typical device management server; receiving information related to a terminal provisioning server from the typical device management server, and receiving a device management message via a session of the terminal provisioning server, so as to implement a reliable device management method.

Device management method using broadcast channel

A method, system, and terminal for handling or processing roaming errors between networks that can support broadcast services is provided. When a roaming service between networks is requested, if a user authentication request is unsuccessful due to non-matching identification information between the networks, a corresponding error message is delivered to the subscriber terminal and network information that has been recently updated using various methods is provided such that repetitive requests and responses for authentication can be avoided when the subscriber requests a roaming service, and thus a roaming service between networks can be quickly provided without delays.

A method of digital rights management for a broadcast-multicast service, the method comprising receiving a request from a terminal to join a service domain having a common group key; transmitting encryption of one or more service encryption keys using the common group key to the terminal that requested to join; and allowing the terminal to share the same contents and the same services with one or more other devices within the service domain.

Method for managing digital rights in broadcast/multicast service

In a broadcast/multicast service based on user location information, when a terminal sets contents desired to be received in a specific area, a broadcast/multicast server checks current location information of the terminal transmitted from a location server or from the corresponding terminal, selects contents provided in the corresponding area, and transmits it to the terminal. Thus, a waste of a communication channel can be prevented, and since a user can selectively receive contents or information according to his/her location, user's satisfaction and convenience can be enhanced.

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Seoul, South Korea

Min-Jung Shon