A Study of Matching Output Queueing with a 3D-VOQ Switch

In this paper, a novel architecture of three-Dimensional Virtual Output Queue (3D-VOQ) switch is proposed The 3D-VOQ switch requires no speedup and provides an exact emulation of an output-queued switch with a broad class of service scheduling algorithms regardless of its incoming traffic pattern and switch size First, an N×N 3D-VOQ switch was proposed In this architecture, input queues were designed with a few virtual output queues (VOQ) to avoid Head-Of-Line problems and output sides were arranged using sufficient separate queues The combination of this scheme makes switch an input/output contention-free architecture Next, we propose a Small Time- to-leave Cell First (STCF) algorithm of which it can produce a stable many-to-many assignment It is also demonstrated and illustrated that the proposed 3D-VOQ switch can be used to mimic an exact OQ switch Finally, analysis and simulation are employed to verify the performance of 3D-VOQ.

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