An electronic device includes at least one communication circuit, and a processor electrically connected with the at least one communication circuit. The processor may be configured to select an external electronic device in response to a user input, broadcast, through the at least one communication circuit using a first protocol, a connection request for a second protocol-based communication with the external electronic device, receive a response to the connection request from the external electronic device through the at least one communication circuit, and perform communication with the external electronic device through the at least one communication circuit using a second protocol, based on connection information about the external electronic device for the second protocol-based communication, the connection information being contained in the response.

A device providing an emergency alert service via a mobile broadcasting according to one embodiment of the present invention includes an RS frame encoder configured to generate an RS frame, which is a 2.sup.nd dimensional data frame, in a manner of performing an RS (Reed-Solomon)-CRC (Cyclic Redundancy Check) encoding on an ensemble comprising a mobile data for a mobile broadcasting service and a service signaling channel containing an access information on the mobile broadcasting service, an RS frame divider configured to divide the generated RS frame into a plurality of RS frame portions, a signaling encoder configured to generate a signaling data comprising a TPC (Transmission Parameter Channel) for signaling a transmission parameter of the mobile broadcasting and a FIC (Fast Information Channel) containing a connection information between the ensemble and the broadcasting service, a data group formatter configured to generate a data group containing a part of the signaling data and the RS frame portion, and a broadcasting signal generating unit configured to generate a mobile broadcasting signal containing the data group.

A device providing an emergency alert service via a mobile broadcasting according to one embodiment of the present invention includes an RS frame encoder configured to generate an RS frame, which is a 2.sup.nd dimensional data frame, in a manner of performing an RS (Reed-Solomon)-CRC (Cyclic Redundancy Check) encoding on an ensemble comprising a mobile data for a mobile broadcasting service and a service signaling channel containing an access information on the mobile broadcasting service, an RS frame divider configured to divide the generated RS frame into a plurality of RS frame portions, a signaling encoder configured to generate a signaling data comprising a TPC (Transmission Parameter Channel) for signaling a transmission parameter of the mobile broadcasting and a FIC (Fast Information Channel) containing a connection information between the ensemble and the broadcasting service, a data group formatter configured to generate a data group containing a part of the signaling data and the RS frame portion, and a broadcasting signal generating unit configured to generate a mobile broadcasting signal containing the data group.

An apparatus for transmitting broadcasting signal using transmitter identification scaled by 4-bit injection level code and method using the same are disclosed. An apparatus for transmitting broadcasting signal according to an embodiment of the present invention includes a waveform generator configured to generate a host broadcasting signal; a transmitter identification signal generator configured to generate a transmitter identification signal for identifying a transmitter, the transmitter identification signal scaled by an injection level code; and a combiner configured to inject the transmitter identification signal into the host broadcasting signal in a time domain so that the transmitter identification signal is transmitted synchronously with the host broadcasting signal.

An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling, size information of Physical Layer Pipes (PLPs) and time interleaver information shared by the core layer signal and the enhanced layer signal.

Disclosed herein are systems, methods, and non-transitory computer-readable storage media for broadcasting a local signal B that corresponds to a coverage hole in a remote signal B. The system includes a first transmitter at a first location and a second transmitter at the first location that transmits local signal B corresponding to remote signal B transmitted from a remote transmitter. The second transmitter broadcasts the local signal B to at least part of a coverage hole in a coverage area of remote signal B. Also disclosed is a method for consolidating allocated wireless spectrum. The method includes identifying a guard band in an allocated band of wireless spectrum, reassigning an existing channel occupying a portion of the allocated band of wireless spectrum to the guard band via selective single frequency network infill to yield a reassigned channel, and freeing the portion of the allocated band of wireless spectrum.

Disclosed herein are systems, methods, and non-transitory computer-readable storage media for broadcasting a local signal B that corresponds to a coverage hole in a remote signal B. The system includes a first transmitter at a first location and a second transmitter at the first location that transmits local signal B corresponding to remote signal B transmitted from a remote transmitter. The second transmitter broadcasts the local signal B to at least part of a coverage hole in a coverage area of remote signal B. Also disclosed is a method for consolidating allocated wireless spectrum. The method includes identifying a guard band in an allocated band of wireless spectrum, reassigning an existing channel occupying a portion of the allocated band of wireless spectrum to the guard band via selective single frequency network infill to yield a reassigned channel, and freeing the portion of the allocated band of wireless spectrum.

A method and apparatus for handling emergency information for a wireless transmit receive unit (WTRU). The WTRU configured to receive scheduling information and receive a first transmission with a plurality of earthquake and tsunami warning system (ETWS) sub-system information blocks (sub-SIBs) of a first part of a ETWS-SIB based on the scheduling information, wherein the plurality of ETWS sub-SIBs of the first part include segments of a secondary ETWS message. The WTRU is further configured to receive a second transmission of a plurality of ETWS sub-SIBs of a second part of the second ETWS-SIB interspersed with non-EWTS system information, wherein the plurality of ETWS sub-SIBs of the second part include segments of the secondary ETWS message. The WTRU is further configured to recover the secondary ETWS message from the first and second part of the second ETWS-SIB and then display the recovered secondary ETWS message via a user interface.

A method and apparatus for handling emergency information for a wireless transmit receive unit (WTRU). The WTRU configured to receive scheduling information and receive a first transmission with a plurality of earthquake and tsunami warning system (ETWS) sub-system information blocks (sub-SIBs) of a first part of a ETWS-SIB based on the scheduling information, wherein the plurality of ETWS sub-SIBs of the first part include segments of a secondary ETWS message. The WTRU is further configured to receive a second transmission of a plurality of ETWS sub-SIBs of a second part of the second ETWS-SIB interspersed with non-EWTS system information, wherein the plurality of ETWS sub-SIBs of the second part include segments of the secondary ETWS message. The WTRU is further configured to recover the secondary ETWS message from the first and second part of the second ETWS-SIB and then display the recovered secondary ETWS message via a user interface.

An apparatus for sharing terrestrial broadcast contents by using a smart antenna configured to receive the terrestrial broadcast contents and to transmit received terrestrial broadcast contents to a display terminal via a wireless communication network and a display terminal configured to receive the terrestrial broadcast contents from the smart antenna and to display received terrestrial broadcast contents includes a smart antenna searching unit configured to search at least one other smart antenna connected via a network, a contents searching unit configured to search terrestrial broadcast contents receivable by the at least one other smart antenna, and a contents sharing unit configured to cause the terrestrial broadcast contents searched by the contents searching unit to be shared by at least one display terminal.