| 主权项 |
1. A communication subsystem for use in a wireless mobile station, the communication subsystem comprising:
a first modem configured to support a first radio access technology, the first modem including a first radio frequency subsystem including a transmitter and a plurality of receive chains respectively configured to transmit and receive information according to the first radio access technology; a second modem configured to support a second radio access technology, the second modem including a second radio frequency subsystem including a transmitter and a plurality of receive chains respectively configured to transmit and receive information according to the second radio access technology; the first and second modems being communicatively coupled via an inter-modem communication link; one or more first frequency synthesizers coupled to the transmitters of the first and second modems, the one or more first frequency synthesizers configured to generate local oscillating signals for the transmitters; and one or more second frequency synthesizers coupled to the pluralities of receive chains of the first and second modems, the one or more second frequency synthesizers configured to generate local oscillating signals for the pluralities of receive chains; the transmitter and the plurality of receive chains of the first modem being coupled to at least two antennas through one or more multiplexers, and the transmitter and the plurality of receive chains of the second modem being coupled to the at least two antennas through the one or more multiplexers; wherein when a given one of the first and second modems is in active communication, via a first one of the at least two antennas, with a wireless communication network according to that modem's radio access technology, the other one of the first and second modems is configured to simultaneously use another one of the at least two antennas to measure one or more signal or network parameters associated with that modem's radio access technology. |
