SUPPORTING ANALOG REMOTE ANTENNA UNITS (RAUS) IN DIGITAL DISTRIBUTED ANTENNA SYSTEMS (DASS) USING ANALOG RAU DIGITAL ADAPTORS

摘要

Supporting analog remote antenna units (RAUs) in digital distributed antenna systems (DASs) using analog RAU digital adaptors. In the digital DAS disclosed herein, a head-end equipment (HEE) is configured to exchange digital communications signals with a plurality of digital RAUs. The digital DAS is also configured to distribute digital communications signals to an analog RAU(s), which is not inherently capable of processing the digital communications signals. In this regard, an analog RAU digital adaptor(s) is provided in an analog remote unit to serve as a digital interface for the analog RAU(s). The analog RAU digital adaptor(s) is configured to provide conversions between the digital communications signals and analog RF communications signals. By providing the analog RAU digital adaptor as the digital interface for the analog RAU(s), the digital DAS can be configured to compatibly communicate with the analog RAU(s) and the digital RAU(s).

主权项

1. An adaptive analog remote unit for a digital distributed antenna system (DAS), comprising:
at least one analog remote antenna unit (RAU) configured to:
receive at least one uplink analog radio frequency (RF) communications signal from at least one client device; andconvert the at least one uplink analog RF communications signal into at least one uplink analog optical communications signal; at least one analog RAU digital adaptor coupled to the at least one analog RAU over at least one uplink optical fiber; wherein the at least one analog RAU is configured to provide the at least one uplink analog optical communications signal to the at least one analog RAU digital adaptor; and the at least one analog RAU digital adaptor configured to:
receive the at least one uplink analog optical communications signal from the at least one analog RAU over the at least one uplink optical fiber; andconvert the at least one uplink analog optical communications signal into at least one uplink digital communications signal; anddistribute the at least one uplink digital communications signal over at least one uplink communications medium to a digital head-end equipment (HEE) in the digital DAS.