APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING SIGNAL FOR HANDOFF IN BROADCASTING NETWORK
First Claim
1. An apparatus for transmitting a signal for handoff in a transmitter of a broadcasting network where a plurality of center frequencies exist, the apparatus comprising:
- a baseband broadcasting signal generation unit configured to generate a baseband broadcasting signal from broadcasting data to be transmitted;
a transmitter identification signal sequence generation unit configured to generate a transmitter identification signal of the transmitter;
a first transmission unit configured to combine the baseband broadcasting signal and the transmitter identification signal, and up-convert the combined signal to a center frequency of the transmitter; and
a second transmission unit configured to modulate the transmitter identification signal, and up-convert the modulated transmitter identification signal to center frequencies of adjacent transmitters.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for transmitting a signal for handoff in a transmitter of a broadcasting network where a plurality of center frequencies exist includes: a baseband broadcasting signal generation unit configured to generate a baseband broadcasting signal from broadcasting data to be transmitted; a transmitter identification signal sequence generation unit configured to generate a transmitter identification signal of the transmitter; a first transmission unit configured to combine the baseband broadcasting signal and the transmitter identification signal, and up-convert the combined signal to a center frequency of the transmitter; and a second transmission unit configured to modulate the transmitter identification signal, and up-convert the modulated transmitter identification signal to center frequencies of adjacent transmitters.
21 Citations
18 Claims
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1. An apparatus for transmitting a signal for handoff in a transmitter of a broadcasting network where a plurality of center frequencies exist, the apparatus comprising:
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a baseband broadcasting signal generation unit configured to generate a baseband broadcasting signal from broadcasting data to be transmitted; a transmitter identification signal sequence generation unit configured to generate a transmitter identification signal of the transmitter; a first transmission unit configured to combine the baseband broadcasting signal and the transmitter identification signal, and up-convert the combined signal to a center frequency of the transmitter; and a second transmission unit configured to modulate the transmitter identification signal, and up-convert the modulated transmitter identification signal to center frequencies of adjacent transmitters. - View Dependent Claims (2, 3, 4)
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5. An apparatus for transmitting a signal for handoff in a transmitter of a broadcasting network where a plurality of center frequencies exist, the apparatus comprising:
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a baseband broadcasting signal generation unit configured to generate a baseband broadcasting signal from broadcasting data to be transmitted; a transmitter identification signal sequence generation unit configured to generate a transmitter identification signal of the transmitter; a first transmission unit configured to modulate the baseband broadcasting signal, and up-convert the modulated baseband broadcasting signal to a center frequency of the transmitter; and a second transmission unit configured to modulate the transmitter identification signal, and up-convert the modulated transmitter identification signal to center frequencies of adjacent transmitters. - View Dependent Claims (6, 7, 8)
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9. An apparatus for receiving a signal for handoff in a broadcasting network where a plurality of center frequencies exist, the apparatus comprising:
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a wireless reception unit configured to receive and modulate a broadcasting signal including a preset transmitter identification signal and a signal constituted with only transmitter identification signals of adjacent transmitters over a preset frequency band; a baseband received signal processing unit configured to convert the broadcasting signal including the transmitter identification signal into broadcasting data; a baseband broadcasting signal generation unit configured to convert the broadcasting data into a baseband broadcasting signal; an extraction unit configured to extract the transmitter identification signal by removing the broadcasting signal from the broadcasting signal including the transmitter identification signal; a transmitter identification signal sequence detection unit configured to measure signal qualities of transmitters corresponding to the transmitter identification signals by using the transmitter identification signals; and a channel or frequency selection unit configured to compare the measured signal qualities of the transmitters, determine whether to perform the handoff according to the comparison result, and select an optimal frequency channel. - View Dependent Claims (10, 11)
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12. An apparatus for receiving a signal for handoff in a broadcasting network where a plurality of center frequencies exist, the apparatus comprising:
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a wireless reception unit configured to receive and modulate a currently received broadcasting signal and a signal constituted with only transmitter identification signals of adjacent transmitters over a preset frequency band; a baseband received signal processing unit configured to convert the received broadcasting signal into broadcasting data; a quality measurement/conversion unit configured to measure a reception quality of the received broadcasting signal by using the broadcasting data, and adjust the measured reception qualities by using a reset ratio; a transmitter identification signal sequence detection unit configured to measure signal qualities of transmitters corresponding to the transmitter identification signals by using the transmitter identification signals; and a channel or frequency selection unit configured to compare the reception quality of the received broadcasting signal and the measured signal qualities of the transmitters, determine whether to perform the handoff according to the comparison result, and select an optimal frequency channel. - View Dependent Claims (13, 14, 15)
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16. A method for receiving a signal for handoff in a broadcasting network where a plurality of center frequencies exist, the method comprising:
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receiving and modulating a broadcasting signal including a preset transmitter identification signal and a signal constituted with only transmitter identification signals of adjacent transmitters over a preset frequency band; converting the broadcasting signal including the transmitter identification signal into broadcasting data; recovering the broadcasting data into a baseband broadcasting signal; extracting the transmitter identification signal by removing the broadcasting signal from the broadcasting signal including the transmitter identification signal; measuring a reception quality of the preset transmitter by using the transmitter identification signals; measuring reception qualities of the adjacent transmitters; and comparing the measured reception quality of the preset transmitter with a preset threshold value, compare the measured reception quality of the preset transmitter with the reception qualities of the transmitters, and select a channel. - View Dependent Claims (17, 18)
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Specification