System and method for reception mode switching in dual-carrier wireless backhaul networks
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United States of America Patent
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Apr 25, 2017
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app pub date -
Jun 25, 2014
filing date -
Sep 13, 2010
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Abstract
A system and method for reception mode switching in a dual-carrier fixed wireless backhaul network is disclosed. The primary carrier is a licensed band. The secondary carrier may be a lower cost shared band or an unlicensed band. Multi-mode Remote Backhaul Modules (RBMs) comprise a first Radio Frequency (RF) chain with antenna elements for receive/transmit (RX/TX) on the primary carrier and a second RF chain with antenna elements for RX/TX on the secondary carrier. The Multi-mode RBMs adaptively switch from one reception mode to another with resource borrowing of RF and antenna elements, e.g. the secondary carrier RF chain and antenna elements can be borrowed for the primary carrier, for better reception capability for the primary carrier, reducing the number of link-budget and interference-challenged RBMs, and improving system performance. The system may comprise a dual carrier and single carrier Multiple-Input Multiple-Output (MIMO) system with variable antenna topology, having flexibility to switch dynamically between different operational modes depending on performance metrics.
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