CUSTOMIZING APPLICATION HEADERS FOR IMPROVED WARFIGHTING COMMUNICATIONS

Currently, U.S. Navy shipboard communications have a great disadvantage: the data rates of satellite links are limited, typically below 4 Mbps for each link. Improving efficient utilization of these links while out to sea is paramount to maintaining our military advantage. Also, any improvement must be transparent to end user functionality. This thesis first explored implementing a free version of a commercial-off-the-shelf wide area network (WAN) optimizer, Artica, on a simulated shipboard network consisting of three local area networks (LAN). Artica works by performing auto-corrections on some web traffic and changing the transmission control protocol (TCP) window sizes. Results from browsing Alexa's top 1,000 websites on the LANs show that Artica can speed up web traffic by 13–26% at link speeds between 1.544 and 8 Mbps. It then explored compressing Domain Name System (DNS) traffic by filtering out IPv6-related queries and removing unused fields of DNS queries and responses. Experimental results show that DNS compression did not significantly improve web traffic performance, which highlights the importance of selecting traffic-intensive applications to compress and control compression-induced processing overhead. Finally, the thesis explored whether Artica and the custom DNS compression program can be deployed together. In summary, this thesis shows that using WAN optimization techniques and saving bits over a slow data rate link can effectively speed up web traffic.NIWC PACLieutenant, United States NavyApproved for public release. Distribution is unlimited

Application of advanced on-board processing concepts to future satellite communications systems: Bibliography

Abstracts are presented of a literature survey of reports concerning the application of signal processing concepts. Approximately 300 references are included

Satellite networking integration in the 5G ecosystem: Research trends and open challenges

The envisioned 5G ecosystem will be composed of heterogeneous networks based on different technologies and communication means, including satellite communication networks. The latter can help increase the capabilities of terrestrial networks, especially in terms of higher coverage, reliability, and availability, contributing to the achievement of some of the 5G KPIs. However, technological changes are not immediate. Many current satellite communication networks are based on proprietary hardware, which hinders the integration with future 5G terrestrial networks as well as the adoption of new protocols and algorithms. On the other hand, the two main paradigms that are emerging in the networking scenario \u2014 software defined networking (SDN) and network functions virtualization \u2014 can change this perspective. In this respect, this article presents first an overview of the main research works in the field of SDN satellite networks in order to understand the already proposed solutions. Then some open challenges are described in light of the network slicing concept by 5G virtualization, along with a possible roadmap including different network virtualization levels. The remaining unsolved problems are related to the development and deployment of a complete integration of satellite components in the 5G ecosystem

Special Issue on Survivable and Resilient Communication Networks and Services

Communication networks and services play a vital role in our modern lives. This importance is expected to continue to grow in future decades. More and more business, healthcare or government organizations will become increasingly dependent on the communication between their offices and people. Not only does modern society depend on these services in terms of availability but also in terms of proper functioning in all circumstances. These services having stringent requirements with respect to protection of privacy and security. Anonymity (such as e-health) cannot accept, for example, temporary leakage of confidential information by accident whether a result of human error or technical problems. The information and communication network technology itself have also been evolving with tremendous breakthroughs. Users have more and more different types of mobile devices that interconnect them to the Internet. These mobile devices provide incentives to generate novel technology paradigms that enable more flexible provisioning, network virtualization, or improved power efficiency. The robustness and fault tolerance of these novel evolutions is as crucial as ever

Orthogonal Array Experiment in Systems

This paper espouses the application of orthogonal array experiment to solve a class of engineering optimization problems encountered in systems engineering and architecting. It also illustrates the applicability of orthogonal array experiment in systems engineering and architecting with two examples: verification and validation of the performance of a bandwidth allocation algorithm and architecting of a system of systems to respond to small boat attacks by terrorists. The orthogonal array experiment approach does not call for linearization of nonlinear engineering optimization problems; using orthogonal arrays, it solves them directly by carrying out the smallest possible number of experiments and determining their solutions from the results of the experiments. The orthogonal array experiment method has been found to be effective and efficient for these problems. The feasibility of applying the orthogonal array experiment approach to these problems suggests its potential application to other optimization problems encountered in systems engineering and architecting

Aeronautical engineering: A continuing bibliography with indexes, supplement 100

This bibliography lists 295 reports, articles, and other documents introduced into the NASA Scientific and Technical Information System in August 1978

Flow Assignment and Processing on a Distributed Edge Computing Platform

The evolution of telecommunication networks toward the fifth generation of mobile services (5G), along with the increasing presence of cloud-native applications, and the development of Cloud and Mobile Edge Computing (MEC) paradigms, have opened up new opportunities for the monitoring and management of logistics and transportation. We address the case of distributed streaming platforms with multiple message brokers to develop an optimization model for the real-time assignment and load balancing of event streaming generated data traffic among Edge Computing facilities. The performance indicator function to be optimised is derived by adopting queuing models with different granularity (packet- and flow-level) that are suitably combined. A specific use case concerning a logistics application is considered and numerical results are provided to show the effectiveness of the optimisation procedure, also in comparison to a “static” assignment proportional to the processing speed of the brokers

Management: A continuing literature survey with indexes, March 1974

This special bibliography lists 597 reports, articles, and other documents introduced into the NASA scientific and technical information system in 1973