Patent ID: 9137078
Filing Date: 2015-09-15
Classification: H03F,H04B,H04L,H04W

Abstract:
1. A method for routing and switching signals, the method comprising: providing a plurality of digital remote units, each configured to transmit one or more downlink channel signals and to receive one or more uplink channel signals; providing a digital access unit configured to communicate with at least two of the plurality of digital remote units, wherein the plurality of digital remote units and the digital access unit are daisy-chained in a ring such that each digital remote unit is linked to a next digital remote unit or to the digital access unit by a single bi-directional optical fiber and each digital remote unit is accessible in either direction around the ring; and routing and switching packetized signals among the plurality of digital remote units and the digital access unit, wherein during a first period of time, a first digital remote unit of the plurality of digital remote units receives a first number of downlink channel signals from the digital access unit in a first direction around the ring, and a second digital remote unit of the plurality of digital remote units receives a second number of downlink channel signals from the digital access unit in a second direction around the ring opposite the first direction, where the first number of downlink channel signals is different from the second number of downlink channel signals.