Abstract: A mobile terminal includes a GSM transceiver, a UMTS transceiver, and a controller. The GSM transceiver communicates via a GSM radio communication interface. The UMTS transceiver communicates via a UMTS radio communication interface. The controller is configured to select and register with a UMTS cell provided by a UMTS radio network controller, to store UMTS cell data defining a snapshot of communication characteristics of the selected UMTS cell, to respond to having registered with the selected UMTS cell by monitoring a GSM control channel via the GSM transceiver for an incoming paging request transmitted by a GSM base station controller, and to respond to receipt of the paging request from the GSM base station controller by using the stored UMTS cell data to assist in setting up a corresponding call via the UMTS transceiver and the selected UMTS cell through the UMTS radio network controller and a UMTS core network.

Abstract: A portable electronic device comprises a multi-band wireless transceiver for communication with a remote device. The portable electronic device comprises a transceiver: i) generating a first band modulated carrier at a first transmitter port; ii) generating a second band modulated carrier at a second transmitter port; and iii) including a low noise amplifier receiving port. A front-end circuit couples the transceiver to an antenna. The front-end circuit includes a first band modulated carrier transmission signal path from the first transmitter port to the antenna comprising: i) a coupling of a first band modulated carrier from the first transmitter port of the transceiver to a low pass port of a diplexer; ii) the diplexer comprising a low pass filter coupling the first band modulated carrier from the low pass port of the diplexer to a common port of the diplexer; and iii) a coupling of the first band modulated carrier from the common port of the diplexer to the antenna.