Abstract:
A method and apparatus are provided for transmitting service discovery information in a multimedia transmission system. Service discovery information, including service access information for reception of a service, is generated. The service discovery information is transmitted after being classified into a plurality of levels.
Abstract:
A method and apparatus for transmitting and receiving multi-format digital broadcasts are disclosed. The method of transmitting multi-format digital broadcasts, includes creating digital broadcast services having different formats and electronic service guides (ESG) associated with the digital broadcast services; creating entry information for accessing the ESGs; and transmitting the digital broadcast services, the ESGs, and the entry information. The same broadcast services may be provided in multiple formats, and a broadcast receiver may selectively receive a broadcast service having a supportable format. Hence, it is possible to enhance effectiveness in reception of a digital broadcast service.
Abstract:
Apparatuses and methods for handover or roaming during a file download or streaming. A streaming roaming method in a Convergence of Broadcast and Mobile Services (CBMS) system includes generating a Session Description Protocol (SDP), a fragment, or a notification message indicating streaming roaming or handover information, and transmitting the SDP, the fragment, or the notification message to a terminal.
Abstract translation:在文件下载或流传输期间切换或漫游的设备和方法。 广播和移动业务(Convergence of Broadcast And Mobile Services,CBMS)系统中的流漫游方法包括生成指示流漫游或切换信息的会话描述协议(SDP),片段或通知消息,以及发送SDP,片段或 向终端发送通知消息。
Abstract:
An apparatus and method for continuously providing a selected service being watched when a user moves out of a cell or network in a Digital Video Broadcasting-Handheld (DVB-H) Convergence of Broadcasting and Mobile Service (CBMS) system. Information required for a handover is provided to a terminal using an interactive channel. The handover for the terminal can be performed using a conventional scheme and an enhanced scheme even when the user moves to a new cell while watching the selected service. As the enhanced handover scheme is provided, the user can receive a seamless service. In a mobile environment, a handover scenario for the terminal can be efficiently provided.
Abstract:
Provided is a method and apparatus for transmitting/receiving a service in a digital broadcasting system. When a user desires to continue receiving a service in an Internet Protocol (IP) platform other than an IP platform to which the user belongs, a network provides service mapping information to a terminal. Thus, even when the user moves to another IP platform while viewing a user-selected service, the terminal can continue receiving the service.
Abstract:
Provided is a method and apparatus for estimating a signal quality bitmap for cells. Maps for a popular frequency are assumed as a benchmark bitmap and maps for other frequencies are constructed based on the benchmark bitmap, thereby remarkably reducing cost imposed by map generation and broadcasting.
Abstract:
A method and apparatus for receiving user roaming and service roaming services from a foreign network in a terminal that has moved from a home network to the foreign network in a digital broadcasting system are provided, in which the terminal receives an ESG from a foreign service provider after entering into the foreign network, selects a roaming type between user roaming and service roaming by determining if an intended broadcasting service is provided from the foreign network, referring to the ESG, receives the intended service from the foreign service provider, if the roaming type is the user roaming, and receives the intended service from a home service provider over the foreign network, if the roaming type is the service roaming.