Patent ID: 9485803
Filing Date: 2016-11-01
CPC Classification: H04B,H04L,H04W,Y02D

Claim Text:
1. A method for providing communications signals in a central unit in a distributed antenna system, comprising: receiving downlink radio-frequency (RF) communication signals at a RF communications frequency for a RF communications service in a communications interface; receiving uplink RF communication signals at the RF communications frequency for the RF communications service in the communications interface; shifting a frequency of the downlink RF communication signals to an intermediate frequency (IF) having a different frequency than the RF communications frequency, to provide downlink IF communications signals in a first frequency conversion circuitry; shifting the frequency of uplink IF communication signals to the RF communications frequency to provide the uplink RF communications signals in a second frequency conversion circuitry, wherein at least one of the first frequency conversion circuitry and the second frequency conversion circuitry are provided in at least one RF integrated circuit (IC) (RFIC) chip; receiving second downlink RF communication signals at a second RF communications frequency for a second RF communications service in the communications interface; receiving second uplink RF communication signals at the second RF communications frequency for the second RF communications service in the communications interface; shifting the frequency of the second downlink RF communication signals to a second IF having a different frequency than the second RF communications frequency, in a third frequency conversion circuitry provided in the at least one RFIC chip, to provide second downlink IF communications signals; and shifting the frequency of second uplink IF communication signals to the second RF communications frequency in a fourth frequency conversion circuitry provided in the at least one RFIC chip, to provide the second uplink RF communications signals.