Compact transceiver architecture for achieving device to device (D2D) communication using uplink and downlink carrier frequencies
First Claim
1. A first mobile station adapted for direct device-to-device communication using an uplink carrier frequency and a downlink carrier frequency, the first mobile station comprising:
- a frequency synthesizer configured to provide the uplink carrier frequency and the downlink carrier frequency to both an up-converter and a down-converter;
a transmission circuit comprising the up-converter and configured to generate a cellular uplink signal when the up-converter receives the uplink carrier frequency, and configured to generate a first device-to-device signal when the up-converter receives the downlink carrier frequency, wherein the cellular uplink signal is communicated from the first mobile station to a base station, and wherein the first device-to-device signal is communicated directly from the first mobile station to a second mobile station;
a reception circuit comprising the down-converter and configured to receive a second device-to-device signal when the down-converter receives the uplink carrier frequency, and configured to receive a cellular downlink signal when the down-converter receives the downlink carrier frequency, wherein both the first mobile station and the second mobile station are registered to end-users, wherein the cellular downlink signal is received by the first mobile station over the downlink carrier frequency during a first period of a time division multiplexing (TDM) synchronization window, wherein the first device-to-device signal is transmitted by the first mobile station over the downlink carrier frequency during a second period of the TDM synchronization window, and wherein the first device-to-device signal carries different data than the cellular downlink signal;
a first switch coupled to the transmission circuit;
a second switch coupled to the reception circuit;
a first duplexer coupled to the first switch via a first link and to the second switch via a second link; and
a second duplexer coupled to the first switch via a third link and to the second switch via a fourth link, wherein the first switch is positioned in-between the transmission circuit and the first duplexer and in-between the transmission circuit and the second duplexer, and wherein the second switch is positioned in-between the reception circuit and the first duplexer and in-between the reception circuit and the second duplexer.
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Accused Products
Abstract
A system and method for device-to-device (D2D) communication is disclosed. A preferred embodiment comprises a frequency synthesizer configured to provide a first carrier frequency and a second carrier frequency, an up-converter coupled to the frequency synthesizer and configured to up-convert a first baseband signal into a cellular uplink signal when receiving the first carrier frequency from the frequency synthesizer, and configured to up-convert the first baseband signal into a first device-to-device signal when receiving the second carrier frequency from the frequency synthesizer, and a down-converter coupled to the frequency synthesizer and configured to down-convert a second device-to-device signal into a second baseband signal when receiving the first carrier frequency from the frequency synthesizer, and configured to down-convert a cellular downlink signal into the second baseband signal when receiving the second carrier frequency from the frequency synthesizer.
18 Citations
13 Claims
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1. A first mobile station adapted for direct device-to-device communication using an uplink carrier frequency and a downlink carrier frequency, the first mobile station comprising:
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a frequency synthesizer configured to provide the uplink carrier frequency and the downlink carrier frequency to both an up-converter and a down-converter; a transmission circuit comprising the up-converter and configured to generate a cellular uplink signal when the up-converter receives the uplink carrier frequency, and configured to generate a first device-to-device signal when the up-converter receives the downlink carrier frequency, wherein the cellular uplink signal is communicated from the first mobile station to a base station, and wherein the first device-to-device signal is communicated directly from the first mobile station to a second mobile station; a reception circuit comprising the down-converter and configured to receive a second device-to-device signal when the down-converter receives the uplink carrier frequency, and configured to receive a cellular downlink signal when the down-converter receives the downlink carrier frequency, wherein both the first mobile station and the second mobile station are registered to end-users, wherein the cellular downlink signal is received by the first mobile station over the downlink carrier frequency during a first period of a time division multiplexing (TDM) synchronization window, wherein the first device-to-device signal is transmitted by the first mobile station over the downlink carrier frequency during a second period of the TDM synchronization window, and wherein the first device-to-device signal carries different data than the cellular downlink signal; a first switch coupled to the transmission circuit; a second switch coupled to the reception circuit; a first duplexer coupled to the first switch via a first link and to the second switch via a second link; and a second duplexer coupled to the first switch via a third link and to the second switch via a fourth link, wherein the first switch is positioned in-between the transmission circuit and the first duplexer and in-between the transmission circuit and the second duplexer, and wherein the second switch is positioned in-between the reception circuit and the first duplexer and in-between the reception circuit and the second duplexer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A first mobile station configured to conduct direct device-to-device communication with a peer mobile station, the first mobile station comprising:
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a frequency synthesizer configured to provide a first carrier frequency and a second carrier frequency; an up-converter coupled to the frequency synthesizer and configured to up-convert a first baseband signal into a cellular uplink signal when receiving the first carrier frequency from the frequency synthesizer, and configured to up-convert the first baseband signal into a first device-to-device signal when receiving the second carrier frequency from the frequency synthesizer, wherein the cellular uplink signal is communicated from the first mobile station to a base station, and wherein the first device-to-device signal is communicated directly from the first mobile station to a second mobile station; a down-converter coupled to the frequency synthesizer and configured to down-convert a second device-to-device signal into a second baseband signal when receiving the first carrier frequency from the frequency synthesizer, and configured to down-convert a cellular downlink signal into the second baseband signal when receiving the second carrier frequency from the frequency synthesizer, wherein both the first mobile station and the second mobile station are registered to end-users, wherein the first mobile station is configured to communicate the cellular uplink signal over the first carrier frequency during a first period of a time division multiplexing (TDM) synchronization window, and to communicate the second device-to-device signal over the first carrier frequency during a second period of the TDM synchronization window, and wherein the second device-to-device signal carries different data than the cellular uplink signal; a first switch coupled to the up-converter; a second switch coupled to the down-converter; a first duplexer coupled to the first switch via a first link and to the second switch via a second link; and a second duplexer coupled to the first switch via a third link and to the second switch via a fourth link, wherein the first switch is positioned in-between the up-converter and the first duplexer and in-between the up-converter and the second duplexer, and wherein the second switch is positioned in-between the down-converter and the second duplexer and in-between the down-converter and the first duplexer. - View Dependent Claims (12, 13)
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Specification