FPGA design of a queue management equipment with variable-length packets switching on the satellite onboard switch

Abstract

In order to solve the problem of the limitation of hardware resource consumption on the satellite onboard switch, this paper implements a kind of queue manager circuit, and introduced the design ideas, working process of each module. Key modules are programmed and realized with Verilog HDL. The results of ModelSim former simulation show that the circuit satisfies the functions of queue management equipment which is of high efficiency in cell switching. Keywordssatellite onboard switch; variable-length packet; queue management equipmentI.

Design of buffered double linked list for LEO satellite beam‐hopping forwarding

“…The system uses a beam‐hopping OBP communication payload. On the one hand, the satellite processing and forwarding have greater bandwidth efficiency, power utilization, and less time delay waste than transparent forwarding, 11 but at the same time, it needs to demodulate and exchange the received data, which greatly increases the system complexity. On the other hand, unlike GEO satellites, LEO satellites have the characteristics of high mobility and fast dynamic change, and the beam‐hopping processing scheme can better adapt to such scenarios.…”