论文标题
及时的状态通过间歇性传感和传输进行更新
Timely Status Updating Through Intermittent Sensing and Transmission
论文作者
论文摘要
我们考虑了一种新颖的间歇状态更新模型，其中具有间歇性能源的能量收集节点通过非抢先感应和传输操作对接收者进行状态更新。每个操作的成本为节点的单个能量充电，并且节点在运行时无法收获能量。每个更新的感应时间是独立的，具有一般分布。传输队列在传感操作，常规服务时间分布和单个数据缓冲区后生成单个服务器接收数据包，以保存最新的到达更新数据包。收获能量后，节点必须决定是否激活传感以生成新的更新或传输以将现有更新（如果有）发送到接收器。我们证明，基于阈值的停止规则仅接受传输服务器的年轻数据包，将接收器的信息的平均信息年龄（AOI）最小化。然后，我们使用此结果来通过新型混合等待和阈值方案来解决对所考虑的停止规则的平均AOI优化。我们的数值结果表明，混合方案维持的平均AOI的改善。
We consider a novel intermittent status updating model where an energy harvesting node with an intermittent energy source performs status updating to a receiver through non-preemptive sensing and transmission operations. Each operation costs a single energy recharge of the node and the node cannot harvest energy while in operation. The sensing time for each update is independent with a general distribution. The transmission queue has a single server receiving packets generated after sensing operation, general service time distribution and a single data buffer to save the latest arriving update packet. Once energy is harvested, the node has to decide whether to activate sensing to generate a new update or transmission to send the existing update (if any) to the receiver. We prove that average peak age of information (AoI) at the receiver is minimized by a threshold-based stopping rule that accepts only young packets to the transmission server. We then use this result to address average AoI optimization over the considered stopping rules through novel hybrid waiting and thresholding schemes. Our numerical results show the improvements in average AoI maintained by hybrid schemes.
