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Vehicular networks enable an efficient communication with the aim of improving data dissemination among vehicles. However, a growing number of vehicles expect to conduct data dissemination through road side facilities which cause an increment of network load. To address the issue, this letter applies fog computing technologies for enhancing vehicular network that is planned as a layered network architecture...
As product of the combination of Internet technology and sensor network, Internet of things (IoT) greatly facilitates the mutual interaction of the information world and physical world. Furthermore, with the rapid development of modern transportation systems, as a typical successful application of IoT in the real life, intelligent traffic system (ITS) has a great significance on management of the...
To effectively utilize storage space of edge streaming media servers, cache policies are being studied. Unlike traditional work that focused on hit ratio and overall system bandwidth cost, this paper recognize different significance of users and propose the concept of caching utility as a new metric to evaluate caching strategies. A user based caching algorithm, USCS, involving differentiated service...
Nowadays, the rapid development of digital TV media applications proposes higher requirements on the performance of the media servers. This paper discusses such a media server based on multi-core network processors. These servers are deployed at the edge of the Internet to provide services independently, catering to the characteristics of digital TV. However, it is crucial to find an appropriate storage...
Based on the requirement of the transmission of real-time service in wireless sensor networks, the paper studies Weighted Fair Queuing (WFQ) algorithm profoundly. Having analyzed the reason why WFQ can't ensure the quality of real-time service, it proposes P-WFQ, which is a priority-based Weighted Fair Queuing (P-WFQ) algorithm. With sliding windows, P-WFQ combines WFQ and the priority-based mechanism...
Along with the development and application of the high speed network, in order to reduce the cost of data copy and context switch, the paper presents an improved method of zero-copy data transmission that is suitable for the high speed network environment on Linux and UNIX platforms. The method can reduce the number of data copy and context switch between kernel and user mode. It is tested by transmitting...
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