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首页> 外文期刊>IEEE Vehicular Technology Magazine >Reliable Deep-Space File Transfers: How Data Transfer Can Be Ensured Within a Single Round-Trip Interval
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Reliable Deep-Space File Transfers: How Data Transfer Can Be Ensured Within a Single Round-Trip Interval

机译：可靠的深空文件传输：如何在单个往返间隔内确保数据传输

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摘要

The challenging problem of mission control and data delivery in deep-space explorations is a typical application scenario of delay-/disruption-tolerant networking (DTN) technology. The development of protocols and efficient data transmission mechanisms for space-vehicle networks and deep-space-vehicle communications is presently underway. In this article, we show how to ensure successful file transfers in deep-space-vehicle communications within a single round-trip interval using a bundle protocol (BP), the main protocol of DTN, despite the high rate of data loss, long signal propagation delay, and highly asymmetric channel rates that characterize deep-space channels. The key concept is anticipatory retransmission: bundles are proactively retransmitted, long before the round-trip interval elapses, based on expected transmission failure rather than detected transmission failure.
机译：在深空探测中，任务控制和数据传递的挑战性问题是延迟/中断容忍网络（DTN）技术的典型应用场景。当前，正在为太空车辆网络和深空车辆通信开发协议和有效的数据传输机制。在本文中，我们将展示如何使用DTN的主要协议捆绑协议（BP）在单个往返间隔内确保在深空车辆通信中成功进行文件传输，尽管数据丢失率高，信号长传播延迟和表征深空信道的高度非对称信道速率。关键概念是预期的重传：在往返间隔过去很久之前，将根据预期的传输故障（而不是检测到的传输故障）主动重发束。

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