Abstract:
The present invention relates to a method, for receiving an additional network service which is provided through a temporary base station which is temporarily or locally arranged for transmitting disaster information, which includes: a step of receiving information for the additional network through an existing network service provided by a base station; a step of confirming if a service is to be converted to the additional network or not based on information for the additional network; and a step of receiving an additional network service through the additional network. According to the present invention, a temporary or local additional network service can be efficiently provided in a wireless broadcasting network/communication network. According to the present invention, a communication service can be provided through an additional network although a communication service failure is occurred due to traffic explosion in a region which a disaster or an event and et cetera is generated in a communication service point of view and a broadcasting channel which provides information specialized to the disaster or the event is temporarily or locally additionally provided in a broadcasting point of view. [Reference numerals] (AA) Start; (BB) End; (S300) Receiving an existing network service; (S310) Receiving additional network information; (S320) Corresponds to a conversion target into the additional network?; (S330) Converting into the additional network
Abstract:
PURPOSE: Device and method transmitting supplementary data using spread spectrum are provided to add data to a broadcasting signal for distress broadcasting and additional service without additional channel allocation using spread spectrum. CONSTITUTION: A service data generation unit (110) generates each transmission header of service packets and generates service data including the transmission header and service packet. A transmission data generation unit (120) performs channel coding and spread spectrum of the service data. The transmission data generation unit generates transmission data by inserting a predetermined synchronization code into the spread spectrum data. A modulation unit (131) modulates the transmission data. A signal synthesis unit (133) synthesizes the modulated transmission data to a broadcasting signal. [Reference numerals] (111) Metadata generation unit; (112) Service packet generation unit; (113) Transfer header generation unit; (114) Multiplex unit; (121) First channel coding unit; (122) Interleaving unit; (123) First band spread unit; (124) Second channel coding unit; (125) Second band spread unit; (126) Synchronized spread cod insertion unit; (127) Frame generation unit; (131) Modulation unit; (132) Power control unit; (133) Signal synthesis unit; (140) T-DMB transfer unit; (AA) Message
Abstract:
PURPOSE: A system for providing additional information and a method thereof are provided to offer additional information to a local area through a multimedia service. CONSTITUTION: An additional information generation unit(112) generates additional information. A channel searching unit(113) searches frequencies. The channel searching unit selects an additional information broadcasting channel transmitting the additional information from channels which are currently not used. A channel information providing unit(114) provides the information of the additional information broadcasting channel to a normal broadcasting device. An additional information transmission unit(115) broadcasts the additional information through the additional information broadcasting channel. [Reference numerals] (111) Control unit; (112) Additional information generation unit; (113) Channel searching unit; (114) Channel information providing unit; (115) Additional information transmission unit; (121) General broadcasting signal generation unit; (122) Broadcasting signal transmission unit; (231) Additional information channel detection unit; (232) Interface unit; (233) Reception unit; (234) Display unit; (AA) Additional information providing event;