US 11,690,135 B2
Passive backplane architecture for master unit of distributed antenna system
Patrick Braun, Munningen (DE); and Christoph Gollinger, Bayern (DE)
Assigned to COMMSCOPE TECHNOLOGIES LLC, Hickory, NC (US)
Filed by CommScope Technologies LLC, Hickory, NC (US)
Filed on Sep. 25, 2020, as Appl. No. 17/33,013.
Claims priority of provisional application 62/906,602, filed on Sep. 26, 2019.
Prior Publication US 2021/0100066 A1, Apr. 1, 2021
Int. Cl. H04L 25/02 (2006.01); H04W 88/08 (2009.01); H04W 16/24 (2009.01)
CPC H04W 88/085 (2013.01) [H04L 25/02 (2013.01); H04W 16/24 (2013.01)] 34 Claims
OG exemplary drawing
 
1. A master unit for a distributed antenna system (DAS) that also includes a plurality of remote antenna units, each remote antenna unit serving one or more base stations, the master unit comprising:
one or more donor cards, each donor card configured to couple that donor card to at least one base station;
one or more transport cards, each transport card configured to couple that transport card to one or more sets of remote antenna units; and
at least one passive backplane, each passive backplane comprising a plurality of backplane connectors, wherein each of the backplane connectors is configured to connect a respective donor card or transport card to that passive backplane, and wherein each of the backplane connectors is connected to each of the other connectors via one or more respective passive bi-directional backplane channels;
wherein the master unit is configured so that all active processing of streams of digital samples transported via the DAS is performed by the donor cards and transport cards and not the passive backplane.