Digital interface modules (DIMs) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (DASs)
First Claim
1. A digital interface module (DIM) in a main distributed antenna system (DAS) to support a wide-area DAS, comprising:
- at least one digital remote distribution interface to be coupled with a remote DAS component in a remote DAS in the wide-area DAS;
an analog local distribution interface configured to receive a downlink analog radio frequency (RF) signal from a radio interface module (RIM) in the main DAS;
a digital bus interface, comprising;
an upstream digital bus interface to be coupled with a second downstream digital bus interface comprised in a second DIM that is logically configured as an upstream DIM to the DIM; and
a downstream digital bus interface to be coupled with a third upstream digital bus interface comprised in a third DIM that is logically configured as a downstream DIM to the DIM;
an analog-to-digital (A/D) converter coupled to the analog local distribution interface, wherein the A/D converter is configured to;
receive the downlink analog RF signal from the analog local distribution interface; and
convert the downlink analog RF signal to generate a downlink digital RF signal;
a digital signal processing circuit coupled to the A/D converter and the at least one digital remote distribution interface; and
wherein the digital signal processing circuit is configured to;
receive the downlink digital RF signal from the A/D converter;
convert the downlink digital RF signal to generate one or more first downlink digital RF signals;
combine one or more respective first downlink digital RF signals to generate a combined downlink digital RF signal; and
provide the combined downlink digital RF signal to the at least one digital remote distribution interface to be distributed to the remote DAS component.
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Accused Products
Abstract
Embodiments of the disclosure relate to digital interface modules (DIMs) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (DASs). In this regard, in one aspect, a DIM is a multi-functional device capable of distributing the digital and/or analog communications signals to a local-area DASs in the wide-area DAS. The DIM comprises a digital communications interface for coupling with a digital signal source, an analog local distribution interface for coupling with an analog signal source, and at least one digital remote distribution interface for coupling with a head-end unit (HEU) of the local-area DAS. By employing the DIM in the wide-area DAS, it is possible to flexibly reconfigure the wide-area DAS for distributing digital and/or analog communications signals over the digital communications mediums.
859 Citations
13 Claims
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1. A digital interface module (DIM) in a main distributed antenna system (DAS) to support a wide-area DAS, comprising:
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at least one digital remote distribution interface to be coupled with a remote DAS component in a remote DAS in the wide-area DAS; an analog local distribution interface configured to receive a downlink analog radio frequency (RF) signal from a radio interface module (RIM) in the main DAS; a digital bus interface, comprising; an upstream digital bus interface to be coupled with a second downstream digital bus interface comprised in a second DIM that is logically configured as an upstream DIM to the DIM; and a downstream digital bus interface to be coupled with a third upstream digital bus interface comprised in a third DIM that is logically configured as a downstream DIM to the DIM; an analog-to-digital (A/D) converter coupled to the analog local distribution interface, wherein the A/D converter is configured to; receive the downlink analog RF signal from the analog local distribution interface; and convert the downlink analog RF signal to generate a downlink digital RF signal; a digital signal processing circuit coupled to the A/D converter and the at least one digital remote distribution interface; and wherein the digital signal processing circuit is configured to; receive the downlink digital RF signal from the A/D converter; convert the downlink digital RF signal to generate one or more first downlink digital RF signals; combine one or more respective first downlink digital RF signals to generate a combined downlink digital RF signal; and provide the combined downlink digital RF signal to the at least one digital remote distribution interface to be distributed to the remote DAS component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification