如此及时，却已过时：时钟漂移对实时系统的影响
So Timely, Yet So Stale: The Impact of Clock Drift in Real-Time Systems
AI总结：
本文研究实时通信中发射端与接收端时钟漂移对信息年龄的影响，在确定性和概率性漂移模型下推导出平均信息年龄的闭式表达式，并分析了关键参数的影响。
摘要：
本文研究实时通信系统中状态更新数据包的及时交付问题，其中发射机通过不可靠信道将信源生成的状态更新发送给接收机。发送和接收数据包的时间戳分别使用位于发射机和接收机的独立时钟进行测量。为考虑这两个时钟之间可能存在的时钟漂移，我们同时考虑了确定性和概率性漂移场景。我们针对信息年龄（AoI）分析了系统性能，并在两种时钟漂移模型下推导了信息年龄分布和平均信息年龄的闭式表达式。此外，我们通过解析和数值结果探讨了关键系统参数对平均信息年龄的影响。
英文摘要：
In this paper, we address the problem of timely delivery of status update packets in a real-time communication system, where a transmitter sends status updates generated by a source to a receiver over an unreliable channel. The timestamps of transmitted and received packets are measured using separate clocks located at the transmitter and receiver, respectively. To account for possible clock drift between these two clocks, we consider both deterministic and probabilistic drift scenarios. We analyze the system's performance regarding the Age of Information (AoI) and derive closed-form expressions for the distribution and the average AoI under both clock drift models. Additionally, we explore the impact of key system parameters on the average AoI through analytical and numerical results.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
