Barrier coverage of wireless sensor networks has been studied intensively in recent years under the assumption that sensors are deployed uniformly at random a large area (Poisson point process model). However, when along line (e.g., dropped from an aircraft given path), they would be distributed with offsets due to wind and other environmental factors. It is important study barrier such line- based deployment strategy as it represents more realistic placement model than Poisson model. This...

In a virtualized infrastructure where physical resources are shared, single server failure will terminate several virtual servers and crippling the infrastructures which contained those servers. worst case, more failures may cascade from overloading remaining To guarantee some level of reliability, each infrastructure, at instantiation, should be augmented with backup nodes links that have sufficient capacities. This ensures that, when occur, computing available network topology is...

Nowadays, large-scale video distribution feeds a significant fraction of the global Internet traffic. However, existing content delivery networks may not be cost efficient enough to distribute adaptive streaming, mainly due lack orchestration on storage, computing, and bandwidth resources. In this paper, we leverage Media Cloud deliver on-demand streaming services, where those resources can dynamically scheduled in an fashion. Our objective is minimize total operational by optimally...

Information centric networks (ICNs) allow content objects to be cached within the network, so as provide efficient data delivery. Existing works on in-network caches mainly focus minimizing redundancy of improve cache hit ratio, which may not lead significant bandwidth saving. On other hand, it could result in too frequent caching operations, i.e., placement and replacement, causing more power consumption at nodes, shall avoided energy-limited delivery environments, e.g., wireless networks....

User behavior in the Internet has changed over recent years towards being driven by exchanging and accessing information. Many advances networking technologies have utilized this change focusing on content of an exchange rather than endpoints content, particular to better support mobility. Network coding information-centric are two examples these trends, each developed largely independently thus far. This paper brings areas together at internetworking layer. We outline opportunities for...

In a virtualized infrastructure where physical resources are shared, single server failure will terminate several virtual servers and crippling the infrastructures which contained those servers. worst case, more failures may cascade from overloading remaining To guarantee some level of reliability, each infrastructure, at instantiation, should be augmented with backup nodes links that have sufficient capacities. This ensures that, when occur, computing available network topology is...

This paper describes a content centric network architecture which uses software defined networking principles to implement efficient metadata driven services by extracting at the layer. The ability access transparently enables number of new in network. Specific examples discussed here include: traffic engineering scheme prior knowledge length optimize delivery, firewall is more resilient than traditional firewalls and differentiated treatment based on type being accessed. A detailed outline...

This paper describes the opportunistic routing in dynamic ad hoc networks, OPRAH protocols, which uses air interface to find a more optimal path for each packet network. In static environment connectivity is perturbed only by fading between two fixed points, performance of these protocols depends on how steady route is. Thus have following advantages: ability interoperate with wired ensure that network can communicate legacy infrastructure, it works low mobility environment, and should be...

Online social networks (OSNs) play an increasingly important role today in informing users about content. At the same time, mobile devices provide ubiquitous access to this content through cellular infrastructure. In paper, we exploit fact that interest spreads over OSNs, which makes it, a certain extent, predictable. We propose Proactive Seeding-a technique for minimizing peak load of networks, by proactively pushing ("seeding") selected before they actually request it. develop family...

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Wireless information-centric networks consider storage one of the network primitives, and propose to cache data within in order improve latency access content reduce bandwidth consumption. We study throughput capacity an when cached each node has a limited lifetime. The results show that with some fixed request expiration rates, can have maximum 1/√n 1/log n cases grid random networks, respectively. Comparing these values corresponding no capability (1/n 1/√(n log n) respectively), we...

Transcoding is widely adopted for content adaptation; however, it may incur excessive resource consumption and processing delays. Taking advantage of cloud infrastructure, cloud-based transcoding can elastically allocate resources under time-varying workloads perform multiple transcodings in parallel to reduce To provide as a service, systems require some intelligent mechanisms provision schedule tasks satisfy user requirements while maximizing financial profit. this end, we propose...

Through the recent emergence of joint resource and network virtualization, dynamic composition provisioning time-limited isolated virtual infrastructures is now possible. One other benefit infrastructure virtualization capability transparent reliability (reliability becomes a service provided by infrastructure). In this context, we discuss motivations gains introducing customizable when executing large-scale distributed applications, present framework to specify, allocate deploy virtualized...

We present PIE, a scalable routing scheme that achieves 100% packet delivery and low path stretch. It is easy to implement in distributed fashion works well when costs are associated links. Scalability achieved by using virtual coordinates space of concise dimensionality, which enables greedy based only on local knowledge. PIE general scheme, meaning it any graph. focus however the Internet, where scalability an urgent concern. show analytically simulation scales extremely Internet-like...

The increasing demand for media-rich content has driven many efforts to redesign the Internet architecture. As one of major candidates, information-centric network (ICN) attracted significant attention, where in-network cache is a key component in different ICN architectures. In this paper, we propose novel framework optimal management ICNs which jointly considers caching strategy and routing. Specifically, based on software-defined networking (SDN) controller responsible determining routing...

In the current Internet architecture, a packet is minimal or fundamental unit upon which different actions such as classification, forwarding, discarding are performed by network nodes. When faced with constrained poor conditions, subjected to undesirable drops and re-transmissions, resulting in unpredictable delays subsequent traffic overheads network. Alternately, we introduce qualitative communication services allow partial, yet timely, delivery of instead dropping it entirely. These...

This paper proposes a network-aware resource management scheme that improves the quality of experience (QoE) for adaptive video streaming in CDNs and Information-Centric Networks (ICN) general, Dynamic Adaptive Streaming over HTTP (DASH) particular. By utilizing DASH manifest, network (by way logically centralized controller) computes available link resources schedules chunk dissemination to edge caches ahead end-user's requests. Our approach is optimized multi-rate videos. We implemented...

The responsiveness of the network is critical when application immersive video streaming or 360 degree streaming. users look at stream on a display that can only show fraction full stream, and time information spend in transit dramatically impacts QoE end user. Further, transmitting significantly increases bandwidth usage impact already strained network. We propose mechanism to use perform Field View (FoV) adaptation, so as reduce consumption while same enhancing In our simulation, such...

Author(s): Garcia-Luna-Aceves, J.J.; He, D.; Westphal, C. | Abstract: Augmented Reality and Virtual are rapidly gaining attention increasingly being deployed over the network. These technologies have large industrial potential to become next big platform with a wide range of applications. This experience will only be satisfying when network infrastructure is able support these Current networks however, still having hard time streaming high quality videos. The advent 5G Networks improve...

Extensive research has demonstrated the potential improvement in physical layer performance when multiple radios transmit concurrently same radio channel. We consider how such cooperation affects requirements for full connectivity and percolation large wireless ad hoc networks. Both noncoherent coherent cooperative transmission are considered. For one-dimensional (1-D) extended networks, contrast to noncooperative any path loss exponent less than or equal one, occurs under model with...

We consider a network with several users trying to access database of files stored at server through shared link. Each user is equipped cache, where can be prefetched according caching policy which mainly based on the popularities files. Coded tries exploit coding opportunities created by cooperative and has been shown significantly reduce load Most prior works focused optimizing so as minimize this expected load. Given demands, problem minimizing over link essentially an index problem. In...

Wireless information-centric networks consider storage as one of the network primitives, and propose to cache data within in order improve latency reduce bandwidth consumption. We study throughput capacity an when cached each node has a limited lifetime. The results show that with some fixed request expiration rates, access time does not change growth, maximum is changing growth grid networks, inversely proportional number nodes cell random networks. Comparing these values corresponding no...

Current mobile network infrastructure has a hard time keeping up with the constant content demand by an increasing number of smart devices, in terms both bandwidth and cost. At same time, advent devices relatively high resources (computing, communications, caching) allows offloading computation, control, cache, communication near users, as edge or fog networking. If we consider caching resource, basic challenges are: (i) How who can form fogs for local caching? (ii) is interacting done...