Neutral Host Architecture For A Distributed Antenna System

• US 20120069880A1
• Filed: 08/16/2011
• Published: 03/22/2012
• Est. Priority Date: 08/17/2010
• Status: Active Grant

• Current Assignee: Dali Wireless Inc. (Dali Systems Co., Ltd.)
• Original Assignee: Dali Systems Co., Ltd.
• Inventors: Lemson, Paul, Stapleton, Shawn Patrick, Trajkovic, Sasa Trajko
• Granted Patent: US 8,848,766 B2
• Time in Patent Office: Days
• US Class Current: 375/220
• CPC Class Codes: H04B 1/18 Input circuits, e.g. for coupling to an antenna or a transmission line coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04W 72/04 Wireless resource allocation

Abstract

A remote radio head unit (RRU) system for achieving high data rate communications in a Distributed Antenna System is disclosed. The Distributed Antenna System is configured as a Neutral Host enabling multiple operators to exist on one DAS system. The present disclosure enables a remote radio head unit to be field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. As a result, the remote radio head system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems.

Claims

1. A remotely reconfigurable remote radio head unit for transporting radio signals comprising

at least one remotely reconfigurable access module adapted to receive uplink radio frequency signals, to output downlink radio frequency signals, and further adapted to receive reconfiguration parameters from a remote location,

one or more band modules, each band module having separately reconfigurable parameters in response to signals received from the access module, and

an interface adapted to provide electrical and mechanical connection for mounting the one or more band modules for providing bidirectional communication between the at least one access module and the one or more band modules.

2. The remotely reconfigurable remote radio head unit of claim 1 wherein the separately reconfigurable parameters comprise at least one of a group comprising operator, frequency, and carrier.

3. The remotely reconfigurable remote radio head unit of claim 2 wherein each band module further comprises a field programmable gate array for storing the reconfigurable parameters for that band module.

4. The remotely reconfigurable remote radio head unit of claim 1 wherein each band module further comprises a framer, deframer, serializer, and deserializer.

5. The remotely reconfigurable remote radio head unit of claim 1 wherein each band module further comprises one or more power amplifiers.

6. The remotely reconfigurable remote radio head unit of claim 1 wherein the band module further comprises one or more digital predistorters.