TCP extensions for space communications
TCP extensions for space communications
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DOI：
10.1145/236387.236398
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发表时间：
1996-11
影响因子：
3
通讯作者：
R. Durst;G. Miller;E. Travis
中科院分区：
文献类型：
--
作者：
R. Durst;G. Miller;E. Travis
从传输协议的角度观察，空间通信环境与移动和无线通信环境表现出许多相似之处。除了与拥塞相关的损失之外，这两种类型的环境都表现出由数据损坏和链路中断引起的损失。两种环境所施加的限制也相似——设备的功率、重量和物理体积都是稀缺资源。最后，通信信道数据速率受到严格限制且高度不对称的情况并不少见。我们正在致力于解决空间通信环境中的此类问题，并且我们相信这些解决方案可能适用于移动和无线社区。作为我们工作的一部分，我们定义并实施了空间通信协议标准传输协议 (SCPS-TP)，这是一组 TCP 扩展，可解决我们已发现的问题。我们在实验室和实际卫星上进行的性能测试结果表明，与未经修改的 TCP 相比，SCPS-TP 扩展在易出错链路上的吞吐量有了显着提高。此外，SCPS 的修改显着提高了具有高度不对称数据速率的链路的性能。
The space communication environment and mobile and wireless communication environments show many similarities when observed from the perspective of a transport protocol. Both types of environments exhibit loss caused by data corruption and link outage, in addition to congestion‐related loss. The constraints imposed by the two environments are also similar – power, weight, and physical volume of equipment are scarce resources. Finally, it is not uncommon for communication channel data rates to be severely limited and highly asymmetric. We are working on solutions to these types of problems for space communication environments, and we believe that these solutions may be applicable to the mobile and wireless community. As part of our work, we have defined and implemented the Space Communications Protocol Standards‐Transport Protocol (SCPS‐TP), a set of extensions to TCP that address the problems that we have identified. The results of our performance tests, both in the laboratory and on actual satellites, indicate that the SCPS‐TP extensions yield significant improvements in throughput over unmodified TCP on error‐prone links. Additionally, the SCPS modifications significantly improve performance over links with highly asymmetric data rates.