Inter-frequency inter-public land mobile network (PLMN) discovery
摘要
說明書
In some aspects, the RF circuitry 1006 can include a receive signal path and a transmit signal path. The receive signal path of the RF circuitry 1006 can include mixer circuitry 1006a, amplifier circuitry 1006b and filter circuitry 1006c. The transmit signal path of the RF circuitry 1006 can include filter circuitry 1006c and mixer circuitry 1006a. RF circuitry 1006 can also include synthesizer circuitry 1006d for synthesizing a frequency for use by the mixer circuitry 1006a of the receive signal path and the transmit signal path. In some aspects, the mixer circuitry 1006a of the receive signal path can be configured to down-convert RF signals received from the FEM circuitry 1008 based on the synthesized frequency provided by synthesizer circuitry 1006d. The amplifier circuitry 1006b can be configured to amplify the down-converted signals and the filter circuitry 1006c can be a low-pass filter (LPF) or band-pass filter (BPF) configured to remove unwanted signals from the down-converted signals to generate output baseband signals. Output baseband signals can be provided to the baseband circuitry 1004 for further processing. In some aspects, the output baseband signals can be zero-frequency baseband signals, although this is not a mandate. In some aspects, mixer circuitry 1006a of the receive signal path can comprise passive mixers, although the scope of the aspects is not limited in this respect.
