This paper proposes the two-level Lottery-based bus arbitration algorithm, which is called RB_Lottery arbitration algorithm, where R means real-time, and B means binary group logic for priority selections. The proposed bus arbitration solves the impartiality and starvation problems which exist in the previous Lottery method, and reduces the average latency of bus requests for real-time applications. The software simulation results show that the proposed RB_Lottery algorithm has better performance of bandwidth guarantees, and has less average latency of bus requests than the Lottery arbitration.
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