ACK Based Scheduling Algorithm for 1xEV-DV
Hongwen Yang · Beijing Youdian Xueyuan xuebao · 2004
Based on the strong correlation between the ARQ (automatic repeat request) acknowledgements (ACK/NAK) and the forward channel quality, a novel scheduling scheme is proposed for 1xEV-DV forward packet data traffic. The proposed scheme schedules the forward packet data channel (F-PDCH) only with the ACK/NAK feedbacks, the implicit channel quality information feedback is no more required. Compared to the conventional design, the proposed scheme replace the channel quality information feedback channel (R-CQICH) with dense feedbacks on ARQ acknowledge channel (R-ACKCH). The feedback is used for both Hybrid ARQ operation and the multi-user packet scheduling. Simulation results indicate that, under the proportional fairness constraints, the system throughput with new algorithm outperforms the conventional algorithm.