Compact transceiver architecture for achieving device to device (D2D) communication using uplink and downlink carrier frequencies

摘要

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.

主权项

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.