TRANSMISSION METHOD FOR COMMON CHANNELS
First Claim
Patent Images
1. A method for transmitting broadcast info comprising:
- introducing delay diversity to the broadcast info symbols,conveying the delay diversified broadcast info symbols to an antenna array, andtransmitting the broadcast info symbols simultaneously with narrow beams.
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Abstract
A method and base station arrangement by which broadcast info messages can be transmitted using cyclic delays and a beamformer to the whole cell simultaneously. In the method during the broadcast info transmission cyclic delays are introduced to the transmitted symbols before the symbols are fed to a beamformer. The delayed symbols are transmitted using antennas connected to the beamformer. By utilizing cyclic delays dead zones can be avoided in the cell or sector. The method can be utilized for example in WiMAX, WiFi, UMTS or 3rd LTE networks.
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Citations
28 Claims
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1. A method for transmitting broadcast info comprising:
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introducing delay diversity to the broadcast info symbols, conveying the delay diversified broadcast info symbols to an antenna array, and transmitting the broadcast info symbols simultaneously with narrow beams. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A multi-antenna base station comprising:
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a modulator for modulating broadcast info symbols, a delay unit for introducing delays to the modulated broadcast info symbols, an RF amplifier for amplifying the broadcast info symbols, and an antenna array for transmitting the broadcast info symbols using multiple narrow beams. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A multi-antenna base station comprising:
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a means for modulating broadcast info symbols a means for introducing delays to the modulated broadcast info symbols, a means for amplifying the broadcast info symbols, a means for defining transmitter beams, and multiple antennas for transmitting the broadcast info symbols using multiple transmitter beams. - View Dependent Claims (27)
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28. A computer readable medium comprising:
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computer readable code means for detecting broadcast info transmission, computer readable code means for creating cyclic delays for broadcast info symbols, and computer readable code means for conveying the delayed signals to a beamformer.
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Specification