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| As a new generation of aviation network communication standard, AFDX has been applied to the A380 and other large civil aircraft due to its advantages of full-duplex, high-bandwidth, low latency, low packet loss and low cost. Switches are key devices influencing the overall performance of an AFDX network. A shared memory architecture is widely used but this has imperfect reliability and scalability, because all the output ports share only one memory and one scheduler, which can lead to severe resource contention and scheduling latency. This article employs space partition techniques to isolate the memory space for each output port, and proposes a new space partitioned shared memory switch (SPSMS) architecture for AFDX networks. This architecture reduces the competition for resources and avoid conflicts, thereby decreasing the latency of packets through the switch. Simulation of the architecture with OPNET shows significant performance improvement over a classic shared memory switch in terms of switch overall packet latency, queuing delay and queue size. |
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| Keywords:AFDX network; Switch Design; Shared Memory Switch; Space Partition; Network Simulation |
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