Multi-standard transceiver for supporting wireless communications in 2.3-2.4 GHz band
First Claim
1. A multi-standard transceiver for supporting a plurality of Time Division Duplexing (TDD) wireless communication standards, comprising:
- a Multi-Mode-modem (MMM) for selecting a transmission standard from the plurality of standards, and performing digital modulation/demodulation in a BaseBand (BB) according to the selected transmission standard, and selecting a transmission channel;
a frequency synthesizing unit for variably adjusting a carrier frequency according to the transmission channel selected by the MMM, and outputting the carrier frequency;
a transmission unit for receiving a digital modulated signal output from the MMM, converting the digital modulated signal into a BB analog modulated signal, low-pass-filtering the analog modulated signal with a bandwidth thereof variably adjusted according to the selected transmission standard, and up-converting the analog modulated signal into a Radio frequency (RF) modulated signal corresponding to the selected transmission channel, using the carrier frequency;
a reception unit for down-converting a received RF modulated signal to a BB analog modulated signal using the carrier frequency, low-pass-filtering the analog modulated signal with a bandwidth thereof being variably adjusted according to the selected transmission standard, and converting the filtered, analog modulated signal into a digital modulated signal;
a transmission/reception switch outputting the RF modulated signal, input from the transmission unit, to an antenna, or outputting the RF modulated signal, received from the antenna, to the reception unit; and
an intelligent channel selection block for selecting a transmission channel based on received signal strengths and frequency offsets of channels;
wherein the intelligent channel selection block comprises;
a channel power measurement unit measuring received signal channel power on a network to which the transceiver belongs, and storing the received signal channel power as channel power data;
a channel list storage unit arranging all channels available on a network to which the transceiver belongs, and storing the channel list;
a channel selection data generation unit generating channel selection assign matrix (CSAM) which comprises of a sum of the differences between given received signal channel power and the power of interferers, including frequency offset parameter contribution with respect to each channel number for channel selection based on the signal channel power data and frequency offsets of channels in the channel list; and
a channel selection unit selecting a highest priority channel from the channels of the channel list based on the channel selection assign matrix (CSAM) for channel selection.
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Accused Products
Abstract
Disclosed herein is a multi-standard transceiver for supporting a plurality of time division deplexing wireless communication standards. The multi-standard transceiver has a Multi-Mode Modem (MMM), a frequency synthesizing unit, a transmission unit, a reception unit and a transmission/reception switch. The MMM selects a transmission standard and a transmission channel and performs digital modulation/demodulation. The frequency synthesizing unit variably adjusts a carrier frequency. The transmission unit receives a digital modulated signal, low-pass-filters the digital modulated signal with a bandwidth thereof variably adjusted according to the selected transmission standard, and up-converts the filtered digital modulated signal into an RF modulated signal. The reception unit down-converts the RF modulated signal, low-pass-filters the down-converted RF modulated signal with a bandwidth thereof being variably adjusted according to the selected transmission standard, and converts the filtered, down-converted RF modulated signal into a digital modulated signal.
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Citations
20 Claims
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1. A multi-standard transceiver for supporting a plurality of Time Division Duplexing (TDD) wireless communication standards, comprising:
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a Multi-Mode-modem (MMM) for selecting a transmission standard from the plurality of standards, and performing digital modulation/demodulation in a BaseBand (BB) according to the selected transmission standard, and selecting a transmission channel; a frequency synthesizing unit for variably adjusting a carrier frequency according to the transmission channel selected by the MMM, and outputting the carrier frequency; a transmission unit for receiving a digital modulated signal output from the MMM, converting the digital modulated signal into a BB analog modulated signal, low-pass-filtering the analog modulated signal with a bandwidth thereof variably adjusted according to the selected transmission standard, and up-converting the analog modulated signal into a Radio frequency (RF) modulated signal corresponding to the selected transmission channel, using the carrier frequency; a reception unit for down-converting a received RF modulated signal to a BB analog modulated signal using the carrier frequency, low-pass-filtering the analog modulated signal with a bandwidth thereof being variably adjusted according to the selected transmission standard, and converting the filtered, analog modulated signal into a digital modulated signal; a transmission/reception switch outputting the RF modulated signal, input from the transmission unit, to an antenna, or outputting the RF modulated signal, received from the antenna, to the reception unit; and an intelligent channel selection block for selecting a transmission channel based on received signal strengths and frequency offsets of channels; wherein the intelligent channel selection block comprises; a channel power measurement unit measuring received signal channel power on a network to which the transceiver belongs, and storing the received signal channel power as channel power data; a channel list storage unit arranging all channels available on a network to which the transceiver belongs, and storing the channel list; a channel selection data generation unit generating channel selection assign matrix (CSAM) which comprises of a sum of the differences between given received signal channel power and the power of interferers, including frequency offset parameter contribution with respect to each channel number for channel selection based on the signal channel power data and frequency offsets of channels in the channel list; and a channel selection unit selecting a highest priority channel from the channels of the channel list based on the channel selection assign matrix (CSAM) for channel selection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A muti-mode RF frequency front-end device for supporting a plurality of TDD wireless communication standards, and performing RF modulation/demodulation according to transmission standard and channel selected from the plurality of TDD wireless communication standards, comprising;
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a frequency synthesizing unit for variably adjusting a carrier frequency according to the selected transmission channel, and outputting the carrier frequency; a transmission unit for receiving a digital modulated signal, converting the digital modulated signal into a BB analog signal, low-pass-filtering the analog modulated signal with a bandwidth thereof variably adjusted according to the selected transmission standard, and up-converting the analog modulated signal into a Radio Frequency(RF) modulated signal corresponding to the selected transmission channel, using the carrier frequency; a reception unit for down-convening a received RF modulated signal to a BB analog modulated signal using the carrier frequency, low-pass-filtering the analog modulated signal with a bandwidth thereof being variably adjusted according to the selected transmission standard, and convening the filtered, analog modulated signal into a digital modulated signal; a transmission/reception switch outputting the RF modulated signal, input from the transmission unit, to an antenna, or outputting the RF modulated signal, received from the antenna, to the reception unit; and an intelligent channel selection block for selecting a transmission channel based on received signal strengths and frequency offsets of channels; wherein an intelligent channel selection block comprises; a channel power measurement unit measuring received signal channel power on a network to which the transceiver belongs, and storing the received signal channel power as channel power data; a channel list storage unit arranging all channels available on a network to which the transceiver belongs, and storing the channel list; a channel selection data generation unit generating channel selection assign matrix (CSAM) which comprises of a sum of the differences between given received signal channel power and the power of interferers, including frequency offset parameter contribution with respect to each channel number for channel selection based on the signal channel power data and frequency offsets of channels in the channel list; and a channel selection unit selecting a highest priority channel from the channels of the channel list based on the channel selection assign matrix(CSAM) for channel selection. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification