The default caching scheme in CCN results a high redundancy along the symmetric request-response path, and makes system inefficient. Since it was first proposed, much work has been done to improve general performance of CCN. Most new schemes attempt reduce on-path by passing information on content popularity between nodes. In this paper, we tackle problem from different perspective. Instead curbing through special decisions beginning, take an orthogonal approach pro-actively eliminating via...

Despite the dramatic improvements achieved in building energy-efficient electronic devices, amount of electricity consumed worldwide to power global information technology infrastructure has grown tremendously past decade. In this paper, we propose algorithms reduce energy consumption by data centers considering placement virtual machines onto servers center intelligently. We formulate problem as an integer programming problem, prove it is NP-hard, then explore two greedy approximation...

The current Internet is based on the old concept of data networking whose role was to mainly build a fault-tolerant network infrastructure that enables efficient sharing scarce and expensive resources such as storage CPU time. Its main feature end-to-end principle communication between any pair hosts under client-server model, which well suited for early applications, e.g., remote login (CPU sharing) ftp (storage). In recent years, usage has evolved become vehicle content generation,...

Satisfying the huge demand for high bandwidth in 5G networks is part achieved by vertical densification of network infrastructure with so-called small-cell base stations. As a direct consequence, performance intrinsically suffers from: 1) inter-cell interference due to density and 2) large energy waste that results from redundancy lightly loaded, always-on, In this paper, we use game theoretic approach design distributed efficient sharing mechanism networks. To circumvent combinatorial...

When both interest packets and data chunks can be dropped on the way, due to network impairments, deciding who, CCN router or end-system, sets timeout duration retransmits packet after a are two key issues that affect performance of network. More specifically, they impact directly occupancy pending table (PIT). The standard does not address these clearly typical implementations (like CCNx) them naively leaving room for further improvements. In lossy networks, if retransmit interests (no-rtx)...

In this paper, we describe a software defined networking (SDN) approach to traffic engineering in inter-data center communication; then present <inline-formula><tex-math notation="LaTeX">$\mathrm{MCTEQ}$</tex-math></inline-formula> , constrained utility-optimization formulation of the joint-bandwidth allocation problem for multiple classes communication. handles priorities between soft manner and explicitly considers delay requirement...

When allocating network bandwidth to multiple classes of applications in inter-data center communication, coordination always yields a better utilization the backbone network. Yet, it often comes at prohibitively heavy computational and communication cost, making thus far not practically viable approach. SDN helped bridging cost gap by enabling centralized control, has been recently applied such inter-DC traffic management. However, is still an issue as efficient fast response engineering...

The energy spent on powering the global information technology (IT) infrastructure has grown tremendously in past decade, despite dramatic improvement achieved building efficient IT devices. In particular, reducing high consumption of data centers become a very important area due to sudden popularity and demand for cloud computing services. this paper, we propose optimize by placing customers' virtual machines intelligently center. We formulate problem as mathematical optimization prove it's...

The CDN serves as an essential element in providing content delivery services on the Internet; however, limited by its footprint and influenced variations of network conditions user demands, no individual can qualitatively fulfill tasks anytime anywhere. As such, large providers often use multiple CDNs. Nevertheless, this approach is not only cumbersome to negotiate business contracts, but also economically inefficient, especially for small providers. A simpler alternative would be let each...

Today, the main usage of Internet has become increasingly about content generation, sharing, retrieval and massive distribution. Widely used P2P applications, UserGenerated Content (UGC) (e.g., Youtube, Flickr) popular Social Networks make service model more content-oriented than host-oriented as it been this far. To match infrastructure to model, a new architecture proposed under generic name Content-Centric networking (CCN, see also Named-data Networking or NDN). One features is its...

The increasing demand for high bandwidth in cellular wireless networks led to a dramatic increase the number of deployed LTE femtocell base stations (FBS) recent years. While energy consumed by single FBS is relatively negligible, collective footprint all FBSs an operator turns out be huge. Energy-efficient protocols are needed thus balance trade-off between saving and utilization. key component desired protocol prevent both waste interference mitigation, which, most previous work has failed...

In dense indoor multi-cell wireless networks, such as WLANs and OFDMA-based femtocell networks (e.g., LTE, WiMAX), the bandwidth waste has become more dramatic due to large interference contention occasioned by uncoordinated channel access methods CSMA. Coordinating resource allocation in network can be a good compromise solution this problem. However, general, is complex multi-dimensional problem that involves four tasks: client association select base station associate with, antenna beam...

In this paper we study the problem of throughput maximization, with fairness guarantee, in multi-cell WLANs hidden terminals. such a scenario, gained by each flow is generally determined four major control mechanisms that make basis WLAN protocols - viz., radio frequency channel assignment, association control, intra-AP airtime sharing between associated clients, and access rate which MAC layer contention window tuning. Instead focusing on apart, optimize network performance via joint...

The settlement-free peering relationships play a vital role in today's Internet, notably helping ISPs cope with the dramatic increase traffic load caused by recent surge demand for videos and user generated content. Because of added caching capability CCN, CCN can be expanded to encompass not only content that is permanently stored ISP's network, but also temporarily cached at routers network. Intuitively, this content-level likely benefit networks involved relationship; however, comes...

It is crucial for cloud service providers to fulfil their tenants targeted quality of (QoS) requirements, yet, providing such QoS in an energy efficient manner paramount importance optimizing operational costs. In this paper, we study the efficiency virtual cluster embedding data centers. More specifically, focus on designing fast algorithms place clusters, including machines, switches and topology with bandwidth requirements. We first model problem as integer programming problem, prove its...

With the increased density of LTE femtocell base station (FBSs) deployments, mutual interference between FBSs becomes a bottleneck to network performance. Inter-femtocell coordination has been invoked in past address this problem, however it is not practically possible as do possess X2 interface enable them communicate with each other. In paper, we opt for fully distributed approach and introduce self-learning MAC protocol allocate resources based on historical user feedback. our approach,...

With the rapidly increasing number of deployed LTE femtocell base stations (FBS), energy consumption networks has become a serious environmental issue. Therefore, energy-efficient protocols are needed to balance trade-off between saving and bandwidth utilization. The key component desired protocol prevent both waste is interference mitigation, which, nevertheless, most previous work failed properly consider. To this end, in paper, we manipulate user equipment (UE) association OFDMA...

In information centric networking (ICN), by default, forwarder nodes along the paths from content producers to consumers, cache and reuse chunks ubiquitously, invoking Least Recently Used (LRU) replacement policy when needed. Due filtering effect, this ubiquitous-LRU strategy is inefficient: popular contents that are cached a few hops away edge of little utility. Most alternative proposals adopt unified on-path schemes rely on popularity statistics or other global state improve performance....

In this paper we study the problem of joint client association, airtime sharing and contention resolution in IEEE802.11 multi-cell WLANs with directional antennas goal achieving optimal fair throughput. We formulate as a non-linear programming solve it under network utility maximization framework. Using simulation, demonstrate that i) association pattern should try to balance number clients associated each AP use capacity more APs; ii) same transmission range an antenna always be avoid...

To improve their profits, it is crucial for cloud service providers to fulfil tenants target QoS requirements in an energy efficient way. The services provided many modern public clouds have graduated include more sophisticated and flexible virtual clusters, encompassing not only the resource requirement of machines (VMs) but also topology between VMs. In this paper, we study efficiency cluster embedding data centers. We carefully develop a mathematical model, aiming minimize consumption...

Reinforcement learning has been applied in operation research and shown promise solving large combinatorial optimization problems. However, existing works focus on developing neural network architectures for certain These lack the flexibility to incorporate recent advances reinforcement learning, as well of customizing model In this work, we analyze end-to-end autoregressive models vehicle routing problems show that these can benefit from with a careful re-implementation architecture....

In this paper we study the problem of client association, jointly with airtime sharing and contention resolution in a multi-cell WLAN hidden terminals objective achieving proportional fair download bandwidth allocation to clients. We first formulate as utility maximization problem, which, due integral nature association turns out be 0-1 (NP-hard) programming then by studying its structure, decompose it into two subproblems: on one hand, joint other. show that, for each fixed pattern,...

Powering an individual LTE femtocell base station, or Home eNodeB (HeNB) in the jargon, requires relatively very little energy. It is only when HeNBs are deployed massively, as has happened past few years, that energy efficiency becomes important issue. With large numbers of co-located and increased inter-cell interference resource utilization highly inefficient resulting a high unnecessary consumption. To tackle this problem, coordination techniques could be invoked by network operator to...

To improve their profits, it is crucial for cloud service providers to fulfil tenants target QoS requirements in an energy efficient way. The services provided many modern public clouds have graduated include more sophisticated and flexible virtual clusters, encompassing not only the resource requirement of machines (VMs) but also topology between VMs. In this paper, we study efficiency cluster embedding data centers. We carefully develop a mathematical model, aiming minimize consumption...

In this paper we study the problem of client association, airtime sharing and contention resolution in a multi-cell WLAN to achieve fair download bandwidth sharing. We first model as utility maximization problem, then, because integral nature being NP-hard, decompose it into two sub-problems: association on one hand, joint other. show that, for each fixed pattern, corresponding can be solved polynomial time. To solve propose so-called Swap localized algorithm. The procedure iteratively swaps...