检索结果-内蒙古大学图书馆

How Can Optical Communications Shape the Future of Deep Space Communications? A Survey

IEEE COMMUNICATIONS SURVEYS AND TUTORIALS 2025年第1期27卷 725-747页

作者： Karmous, Sarah Adem, Nadia Atiquzzaman, Mohammed Samarakoon, Sumudu Univ Tripoli Dept Elect & Elect Engn Tripoli Libya Libyan Author Sci Res Tripoli Libya Univ Oulu Fac Informat Technol & Elect Engn Oulu 90570 Finland Univ Oklahoma Sch Comp Sci Norman OK 73019 USA Univ Oulu Fac Informat Technol & Elect Engn Oulu 90570 Finland

With a large number of deep space (DS) missions anticipated by the end of this decade, reliable and high-capacity DS communications are needed more than ever. Nevertheless, existing technologies are far from meeting such a goal. Improving current systems does not only require engineering leadership, but also, very crucially, investigating potential technologies that overcome the unique challenges of ultra-long DS links. To the best of our knowledge, there has not been any comprehensive surveys of DS communications technologies over the last decade. Free space optical (FSO) is an emerging DS technology, proven to acquire lower communications systems size weight and power (SWaP) and achieve a very high capacity compared to its counterpart radio frequency (RF), the currently used DS technology. In this survey, we discuss the pros and cons of deep space optical communications (DSOC) and review their physical and networking characteristics. Furthermore, we provide, for the first time, thoughtful discussions about implementing orbital angular momentum (OAM) and quantum communications (QC) for DS. We elaborate on how these technologies among other field advances including interplanetary network (IPN) and RF/FSO systems improve reliability, capacity, and security. This paper provides a holistic survey of DSOC technologies gathering 247 fragmented pieces of literature and including novel perspectives aiming to set the stage for more developments in the field.

关键词： delay tolerant networking (DTN) detection technologies Deep space optical communications (DSOC) delay tolerant networking (DTN) link capacity link capacity modulation and coding schemes modulation and coding schemes modulation and coding schemes inter- planetary network (IPN) inter- planetary network (IPN) inter- planetary network (IPN) inter- planetary network (IPN) inter- planetary network (IPN) networking protocols networking protocols modulation and coding schemes quantum communications (QC) quantum communications (QC) radio frequency (RF)/free space optical (FSO) systems radio frequency (RF)/free space optical (FSO) systems radio frequency (RF)/free space optical (FSO) systems orbital angular momen- tum (OAM) orbital angular momen- tum (OAM) orbital angular momen- tum (OAM) orbital angular momen- tum (OAM) orbital angular momen- tum (OAM) quantum communications (QC) radio frequency (RF)/free space optical (FSO) systems

来源：评论

学校读者我要写书评

暂无评论

A Study of DTN for Reliable Data Delivery From Space Station to Ground Station

引用

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 2024年第5期42卷 1344-1358页

作者： Wang, Ruhai Liu, Xingya Yang, Lei Xi, Yuanrong De Sanctis, Mauro Zhao, Kanglian Yang, Hong Burleigh, Scott C. Lamar Univ Phillip M Drayer Dept Elect & Comp Engn Beaumont TX USA Lamar Univ Dept Comp Sci Beaumont TX 77710 USA Nanjing Univ Sch Elect Sci & Engn Nanjing 210023 Peoples R China Lanzhou Univ Sch Management Lanzhou 730000 Gansu Peoples R China Univ Roma Tor Vergata Dept Elect Engn I-00133 Rome Italy Xidian Univ State Key Lab Integrated Serv Networks Xian 710071 Peoples R China China Acad Space Technol Inst Spacecraft Syst Engn Beijing 100094 Peoples R China IPNGROUP Mclean VA 22102 USA

Delay/disruption-tolerant networking (DTN) is a networking technology conceived to manage opportunistic connections with no consistent end-to-end link connectivity which is common in both terrestrial and space communication environments. DTN is recognized as a baseline technology for implementing deep-space networks. Considered as the primary transport protocol of DTN in space, Licklider transmission protocol (LTP) is expected to provide reliable data delivery service in a challenging networking environment regardless of presence of random link disruptions and/or extremely long propagation delays. The National Aeronautics and Space Administration (NASA) has implemented the use of DTN protocols on the International Space Station (ISS) for data delivery to the earth ground station. However, little work has been done in studying the performance of LTP for reliable data/file delivery in such a communication environment, especially in presence of link disruption. There is a lack of a solid performance evaluation of LTP for its use in the space station communications. In this paper, an analytical framework is presented to evaluate the performance of LTP for reliable file delivery between the space station and the ground stations with a focus on the effect of link disruption, which may occur either over the downlink or over the uplink. The effect of data loss due to channel error is also integrated. Realistic data block transmission experiments using a PC-based experimental infrastructure are conducted to validate the analytical models.

关键词： Reliability Space stations Satellites Data communication Relays Transport protocols NASA Satellite communications space communications space station space networks Internet resiliency link outage networking protocols network management

来源：评论

学校读者我要写书评

暂无评论

Acknowledgment Mechanisms for Reliable File Transfer Over Highly Asymmetric Deep-Space Channels

引用

IEEE AEROSPACE AND ELECTRONIC SYSTEMS MAGAZINE 2022年第9期37卷 42-51页

作者： Yang, Lei Wang, Ruhai Liang, Jie Zhou, Yu Zhao, Kanglian Liu, Xingya Nanjing Univ Nanjing 210093 Peoples R China Lamar Univ Beaumont TX 77710 USA Soochow Univ Suzhou 215006 Peoples R China

Deep-space network channels are characterized "in part" by asymmetric channel rates. The effect of the asymmetric channel rates is that the slow acknowledgement (ACK) channel cannot effectively support transmission of the ACK segments generated at the data receiver. Increment of data block size and extension of the retransmission timeout (RTO) timer are widely used transmission mechanisms for eliminating the effect of highly channel-rate asymmetry. The aggregate custody signal (ACS) is recently proposed to resolve the effect of asymmetric channel rates in deep-space networks. In this article, these three acknowledgment mechanisms are studied, with a focus on a comparison of their effectiveness evaluation over highly asymmetric deep-space network channels accompanied by data loss. The study is conducted through realistic file delivery via an experimental testbed infrastructure. It is found that the ACS mechanism shows significant performance advantages over other two mechanisms for both the "normalized" goodput and total data amount in successful file delivery. In particular, the ACS mechanism makes it a better choice to operate with small data bundles without increasing the RTO timer length.

关键词： Receivers Deep-space communications Reliability Propagation losses Delays Satellite communication Aerospace and electronic systems Satellite communications satellite channels space networks networking protocols and deep-space communications

来源：评论

学校读者我要写书评

暂无评论

A Study of Cross-Layer BP/LTP Data Block Size in Space Vehicle Communications Over Lossy and Highly Asymmetric Channels

引用

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 2020年第12期69卷 16126-16141页

作者： Zhou, Yu Wang, Ruhai Zhao, Kanglian Burleigh, Scott C. Soochow Univ Sch Elect & Informat Engn Suzhou 215006 Peoples R China Lamar Univ Phillip M Drayer Dept Elect Engn Beaumont TX 77710 USA Nanjing Univ Sch Elect Sci & Engn Nanjing 210093 Peoples R China CALTECH Jet Prop Lab 4800 Oak Grove Dr Pasadena CA 91109 USA

The bundle protocol (BP) and Licklider transmission protocol (LTP) were developed to provide reliable and highly efficient data delivery over unreliable space vehicle communication channels. Some preliminary studies on cross-layer BP/LTP data block size in space vehicle communications have been done. However, the effect of data losses on the block has been ignored. Data loss caused by lossy space channels is one of the key features that characterize space vehicle communications, and therefore its effect cannot be left out. In this article, the cross-layer BP/LTP block size in space vehicle communications is studied with focus on its characterization and performance over lossy space channels. An analytical model is presented for calculating the minimum number of bundles that should be aggregated within an LTP block for transmission over a lossy channel so that the report segment (RS) delay imposed by highly asymmetric channel rates can be resolved. The model is validated by realistic file transfer experiments over an experimental testbed infrastructure and packet-level analysis of the results. The transmission performance of LTP with respect to variations of the aggregated block size, channel date rate and channel loss rate are discussed.

关键词： Space vehicle space vehicle communications vehicular networks networking protocols

来源：评论

学校读者我要写书评

暂无评论

Challenges and Opportunities in Green networking 8

Challenges and Opportunities in Green Networking

引用

8th IEEE International Conference on Network Softwarization (NetSoft) - Network Softwarization Coming of Age - New Challenges and Opportunities

作者： Clemm, Alexander Westphal, Cedric Futurewei Santa Clara CA 95050 USA

ISBN: (纸本)9781665406949

Reducing mankind's carbon footprint and becoming more sustainable is rapidly becoming one of the main challenges of our age. The networking industry needs to respond to those challenges not only by enabling applications that allow users to save energy (such as, replacing travel with teleconferencing), but also by making networking technology itself significantly more energy-efficient. As a result, the aspect of minimizing network power consumption is rapidly increasing in importance. This position paper aims to articulate opportunities where energy efficiency of networks can be improved, to point out the associated technical challenges, and to identify corresponding research challenges.

关键词： Green IP sustainability energy effiency carbon footprint networking protocols New IP

来源：评论

学校读者我要写书评

暂无评论

IEFP: An Application Layer Protocol for Islamic Electronic Fatawa Management and Security 12

IEFP: An Application Layer Protocol for Islamic Electronic F...

引用

12th International Conference on Innovations in Information Technology (IIT)

作者： Taqieddin, Eyad S. Wahsheh, Yarub A. Jordan Univ Sci & Technol Dept Network Engn & Secur Irbid Jordan Jordan Univ Sci & Technol Dept Comp Sci Irbid Jordan

ISBN: (纸本)9781509053438

With the unfortunate increase of terrorist attacks and the attempts to tarnish the real image of Islam, irresponsible Islamic legal decisions (Fatwas) are used to mislead some Muslims and Non-Muslims to make incorrect conclusions. The widespread of communication technologies opens a huge challenge of E-Fatawa management. In this study, we present a novel application layer protocol for electronic Fatwas to meet the need for management rules to prevent irresponsible Fatwas. We propose a global structure for E-Fatawa with security services that guarantee, Mufti authentication, data integrity and non-repudiation. A proof of concept implementation shows that the protocol is easy to implement, feasible in terms of delay and key management, and protocol messages are flexible to be encoded in other application layer protocols.

关键词： Islam Fatawa networking protocols Authentication Data Integrity Non-repudiation

来源：评论

学校读者我要写书评

暂无评论

Improving the performance of distributed applications using active networks

Improving the performance of distributed applications using ...

引用

17th Annual Joint Conference of the IEEE-Computer-Society/IEEE-Communications-Society (INFOCOM 98)

作者： Legedza, U Wetherall, D Guttag, J MIT Comp Sci Lab Software Devices & Syst Grp Cambridge MA 02139 USA

ISBN: (纸本)0780343840

An active network allows applications to inject customized programs into network nodes. This enables faster protocol innovation by making it easier to deploy new network protocols, even over the pride area. In this paper, rye argue that the ability to introduce active protocols offers important opportunities for end-to-end performance Improvements of distributed applications. We begin by describing several active protocols that provide novel network services and discussing the potential impact of these kinds of services on end-to-end application performance. We then present and analyze the performance of an active networking protocol that uses caching within the network backbone to reduce load on both servers and backbone routers.

关键词： active networks caching distributed applications networking protocols performance

来源：评论

学校读者我要写书评

暂无评论

Empirical Modeling of a Solar-Powered Energy Harvesting Wireless Sensor Node for Time-Slotted Operation

Empirical Modeling of a Solar-Powered Energy Harvesting Wire...

引用

IEEE Wireless Communications and networking Conference (WCNC)

作者： Lee, Pius Eu, Zhi Ang Han, Mingding Tan, Hwee-Pink ASTAR I2R Networking Protocols Dept Singapore Singapore

ISBN: (纸本)9781612842547

Energy harvesting wireless sensor networks (EH-WSNs) are gaining importance in smart homes, environmental monitoring, health care and transportation systems, since they enable much longer operation time as energy can be replenished through energy harvesting. This is unlike sensor nodes that use non-rechargeable batteries which need to be replaced once energy is depleted. However, the sporadic availability of ambient energy makes the design of networking protocols and predicting network performance very challenging. In this paper, we perform an empirical energy characterization of a time-slotted solar energy harvesting node with different system and environmental parameters. We use six different statistical models (uniform distribution, geometric distribution, transformed geometric distribution, Poisson distribution, transformed Poisson distribution and a Markovian model) to fit the empirical datasets. Our results show that there is no single statistical model that can fit all the datasets, thus justifying the need to use empirical data to validate the theoretical analysis of time-slotted MAC protocols for EH-WSNs.

关键词： EH-WSN Energy harvesting Energy measurement Markov processes Markovian model Noise measurement Poisson distribution Solar energy Time frequency analysis Voltage measurement Wireless sensor networks ambient energy empirical energy characterization empirical modeling energy harvesting environmental monitoring environmental parameters health care network performance networking protocols nonrechargeable batteries secondary cells smart homes solar power solar-powered energy harvesting wireless sensor node statistical models system parameters time-slotted MAC protocols time-slotted operation time-slotted solar energy harvesting node transformed Poisson distribution transformed geometric distribution transportation systems uniform distribution wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

Optimization Framework for Green networking (Invited Paper)

Optimization Framework for Green Networking (Invited Paper)

引用

International Conference on Computing, networking and Communications (ICNC)

作者： Westphal, Cedric Clemm, Alexander Futurewei Technol Santa Clara CA USA

ISBN: (纸本)9781665457194

Reducing energy consumption - and especially carbon emissions - is one of the most important challenges facing humankind. ICT (Information and Communication Technology) is a powerful tool to reduce emissions as it offers alternatives to activities that are costly in energy: video streaming saves energy vs driving to a movie theater, for instance. Still, the carbon footprint of ICT in general and networking in particular have been growing, despite better energy efficiency per transmitted bit, due to the sheer growth in Internet usage and traffic. The information and communication technology (ICT) sector is currently estimated to create 2.7% of all global CO2 emissions [1] and expected to continue to increase. Hence, monitoring and reducing the CO2 emissions from ICT is increasingly important. Networks are responsible for around 13% of ICT energy consumption [2], a third of which in turn is attributable to backbone (core) networks [3]. As such, it is important to offer new mechanisms to reduce the energy footprint of networks. In this paper, we present a framework to include energy considerations (as a proxy for carbon footprint) into the management plane of a network. We apply this framework to optimize the network topology so as to minimize the energy spending while at the same time providing a satisfactory Quality of Experience (QoE) to the end users. We present this framework along high-level considerations, as its deployment and evaluation is left for future work.

关键词： Green IP sustainability energy effiency carbon footprint networking protocols green management layer optimization framework

来源：评论

学校读者我要写书评

暂无评论

Time constructs: Design ideology and a future internet

引用

TIME & SOCIETY 2021年第1期30卷 126-149页

作者： Paris, Britt S. Rutgers State Univ New Brunswick NJ USA

This article engages the politics of technology as it examines how a discourse of time is framed by engineers and project principals in the course of the development of three future internet architecture projects: named data networking, eXpressive Internet Architecture, and Mobility First. This framing reveals categories of a discourse of time that include articulations of efficiency, speed, time as a technical resource, and notions of the future manifest in each project. The discursive categories fit into a time constructs model that exposes how these projects were built with regard to concepts of speed and how different notions of time are expressed as a design ideology intertwined with other ideologies. This time constructs framework represents a tool that can be used to expose the social and political values of technological development that are often hidden or are difficult to communicate in cross-disciplinary contexts.

关键词： Future internet architectures networking protocols transmission control protocol internet protocol time temporality ethics future sociomateriality feminist science and technology studies

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：