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In-network guidance for off-path caching, called Breadcrumbs, has been proposed for cache networks. In Breadcrumbs, during content download, a router holds a pointer, breadcrumb, which denotes the latest download direction. When a content request occasionally encounters a breadcrumb along its default-path to the repository, location-based routing is switched to hop-by-hop breadcrumb-based routing...
Following the explosion of Internet-enabled mobile devices and mobile services, users tend to expect network connectivity everywhere they go and at any time. In anticipation of these higher connectivity expectations and requirements especially for vehicular communication, several technologies like WiMAX, cellular networks (i.e., 3G/4G) and wireless mesh networks have been developed. While cellular...
Proliferation of wireless technology and increasing demand of data result in traffic congestion. Congestion due to wireless Internet is increasing at an exponential rate and 50% of this traffic is due to video. However, as popularity of files in Internet follows power law and people with similar interest meet/interact more frequently, there is a good probability that many users in proximity would...
This paper proposes a heterogeneous wireless communication network with soft handover in the application layer. The proposed network requires no upgrades of wireless infrastructure and mobile terminals to evolve the present homogeneous networks to the proposed heterogeneous network. Only installing application programs on the content server side and the mobile terminal side is required. The performance...
In this paper, we analyze an anonymized packet trace of mobile handset data traffic from a major European mobile Internet Service Provider (ISP). Our goal is to understand the effect of the differences between this traffic and the traffic in wired residential networks. This knowledge can be useful for adapting the network to specific mobile usage. We show that, compared to wired users, mobile users...
Internet access for highly mobile users in high-speed trains or cars, underground walkways and tunnels is often challenged by intermittent connectivity with short and unpredictable connectivity opportunities. In such opportunistic communication scenarios, utilizing these connectivity opportunities to the best potential for the mobile user can be crucial to achieve an acceptable overall perceived service...
In a mobile database environment, multiple mobile hosts may access the similar data items independent of their physical locations. This may result in inconsistency of data items. Several Concurrency control techniques have been proposed to eliminate the inconsistency of data items. However because of the mobility and disconnections, the traditional concurrency control strategies are not suitable in...
Nowadays, since devices can find more than one access point (AP) in wireless local area networks (WLANs), we are supposed to choose the access point which tends to provide the best performance based on the kind of usage for which it is specified. Currently, in order to select the most appropriate AP, computers utilize the received signal strength which is referred to as the signal strength strategy...
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