Redundancy in a public safety distributed antenna system
AssigneeDali Systems Co. Ltd.
InventorsSasa Trajkovic, Andrew Leung
Life of this patent
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Abstract
A redundancy system for data transport in a Distributed Antenna System (DAS) includes a plurality of Digital Access Units (DAUs). Each of the plurality of DAUs is fed by a plurality of data streams and is operable to transport digital signals between others of the plurality of DAUs. The redundancy system also includes a plurality of Digital Distribution Units (DDUs). Each of the plurality of DDUs is in communication with each of the plurality of DAUs using cross connection communication paths. The redundancy system further includes a plurality of Digital Remote Units (DRUs). Each of the plurality of DRUs is in communication with each of the plurality of DDUs using cross connection communications paths.
Claims18
A redundancy system for data transport in a Distributed Antenna System (DAS), the redundancy system comprising:
- a plurality of Digital Access Units (DAUs), wherein each of the plurality of DAUs is fed by a plurality of data streams and is operable to transport digital signals between others of the plurality of DAUs;
- a plurality of Digital Distribution Units (DDUs), each of the plurality of DDUs being in communication with each of the plurality of DAUs using cross connection communication paths;
- and
- a plurality of Digital Remote Units (DRUs), each of the plurality of DRUs being in communication with each of the plurality of DDUs using cross connection communications paths.
A Distributed Antenna System (DAS) comprising:
- a primary integrated digital access unit (DAU) having a first input port, a second input port, a first output port, and a second output port;
- a secondary integrated DAU having a first input port, a second input port, a first output port, and a second output port;
- a connection between the primary integrated DAU and the secondary integrated DAU;
- a first digital distribution unit (DDU) having:
- a first input port coupled to the first output port of the primary integrated DAU;
- a second input port coupled to the first output port of the secondary integrated DAU;
- a first output port;
- and
- a second output port
- a second DDU having:
- a first input port coupled to the second output port of the primary integrated DAU;
- and
- a second input port coupled to the second output port of the secondary integrated DAU;
- a first output port;
- and
- a second output port;
- a first digital remote unit having:
- a first input port coupled to the first output port of the first DDU;
- a second input port coupled to the first output port of the second DDU;
- and
- an RF output port;
- a second digital remote unit having:
- a first input port coupled to the second output port of the first DDU
- a second input port coupled to the second output port of the second DDU;
- and
- an RF output port.
Dependencies are inferred from the claim text.