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In the Cloud Radio Access Network (C-RAN)architecture, a fronthaul network carries digitized radio signals from Remote Radio Head (RRH) to centralized Baseband Unit (BBU) using the Common Public Radio Interface (CPRI), which has a one-way jitter requirement of several nanoseconds. It is widely believed that Ethernet cannot meet this stringent jitter requirement, thus today's fronthaul networks are...
There has been a debate on whether or not Ethernet, a highly cost effective technology, could meet the stringent latency and jitter requirements imposed by CPRI. To facilitate the discussion, we conducted simulations to understand how Ethernet performs when carrying CPRI traffic with the two Ethernet enhancements, currently being standardized by IEEE, namely frame preemption (802.1Qbu) and scheduled...
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