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StarCraft II uses a client-server architecture while StarCraft I uses a peer-to-peer architecture. StarCraft I clients utilize more outgoing bandwidth for each additional player in the game, while StarCraft II clients maintain constant client-to-server bandwidth regardless of the number of players. StarCraft I and StarCraft II exhibit distinct packet size and inter-packet size distributions. For StarCraft...
Wireless sensor networks based on the IEEE 802.15.4 standard is able to achieve low-power transmissions in low-rate and short-distance wireless personal area networks (WPANs). It employs the slotted carrier sense multiple access with collision avoidance (CSMA/CA) in the contention access period (CAP). Unfortunately the periodic broadcast beacon frame is transmitted without CSMA/CA so that it could...
In this paper we compare and evaluate two multicast approaches for delay sensitive media distribution in P2P networks. First approach is based on cooperative m-ary trees, while the second approach is based on a cooperative mesh network. Both schemes exploit the full upload capacity of the participating peers and their proximity relation. Our delivery strategy involves the full cooperation between...
Even though many studies have dealt with the common channel issues, the detailed procedures for common channel configuration have not been paid much attention. In this paper, the fast and reliable dynamic common channel setup and reconstruction method for the point-to-point communications in DSA networks is proposed. The detailed time parameters for common channel setup and reconstruction, such as...
It is typical for enterprises to rely on services from cloud providers in order to build a scalable platform with abundant available resources to satisfy user demand, and for cloud providers to deploy a number of datacenters inter-connected with high-capacity links, across different geographical regions. In this paper, we propose that video conferencing, even with its stringent delay constraints,...
In this paper, we examine a new kind of P2P traffic localization approach exploiting the peer selection adaptation (i.e., preferring peers who are likely to provide better performance), called Netpherd. Netpherd tries to affect the peer selection adaptation to localize the P2P traffic by manipulating the network performance. To manipulate the network performance, Netpherd adds an artificial delay...
Packet forwarding in Vehicular Networks is gathering a booming interest in research area as cooperation of nodes becomes important for such a scenario. The presence of selfish nodes reluctant to transfer data packets are the most critical concern in packet forwarding. From explanations of game theory this is a social dilemma situation that gives a suboptimal outcome from a collective standpoint. Strategic...
In a multi-user power line communication (PLC) home network, there are several methods to decide who has the right to use the channel to send data. Basically, there are two kinds of scheduling schemes: coordinated and contention-based. For coordinated scheduling scheme, the manager of PLC network, called domain master, will arrange available medium for users according to network resources and users'...
The wireless requirement of many applications for sensor networks and in many cases their independent power sources, makes the task of increasing the lifetime and the efficiency of the network challenging. Cooperative information processing between the nodes is represented mainly by the routing protocol. In mobile WSN, the routing protocol has to achieve a certain level of efficiency that prolongs...
For Internet applications, e.g., video streaming and file download, bandwidth and end-to-end propagation delay are two significant parameters that affect quality of service. The merit of Client-Server data transmission is able to reduce unnecessary end-to-end propagation delay, but additional upload bandwidth is required at the server (original source) side. However, in peer-to-peer (P2P) data transmission,...
We consider a P2P-assisted content storage and delivery system to support a streaming Video-on-Demand (VoD) service. In this system, the peers are part of the service provider (e.g. set-top boxes) with limited storage space. Servers with ample storage and bandwidth are deployed to guarantee the availability and quality, but it is desirable to minimize the server utilization to reduce costs. Based...
A hybrid wireless network combines a mobile ad-hoc network and an infrastructure network. Efficient and reliable data routing is important for high throughput in such networks. Existing routing schemes that simply combine ad-hoc and infrastructure routings inherit the drawbacks of ad-hoc routing and fail to take advantage of the infrastructure for high efficiency. Current reputation systems relying...
The Payload Dropping CSMA/CA is a cross-layer modified version of the CSMA/CA protocol that can serve as an alternative to the carrier-sense threshold approach for improving throughput in multi-cell networks when the number of co-channel, interference-limited cells is small. The basic idea behind it is a qualification of each signal during the entire preamble and header stages of its reception, and...
Overlay network architectures that use orthogonal channels have been known to provide effective additional resources to underlying networks in high demand. Overlays are composed of relay nodes provided with rich computational resources and multiple wireless interfaces that make them capable of establishing several non-interfering networks. These networks can be used to move traffic around in a non-interfering...
Video streaming with Peer to Peer (P2P) architecture appears to be an interesting solution for efficient streaming in the heterogeneous scenario of Internet applications. One of the key aspects in a peer-to-peer video broadcast system is to organize the peers into a high quality overlay for disseminating the video stream in order to optimize the bandwidth capacity of the P2P system. This work proposes...
In this paper, we present the impact of mobility on our scheme called Location-based Routing with Adaptive Request Zone (LoRAReZ). In LoRAReZ, the size of expected zone and request zone are set adaptively based on the distance between the source node and destination node. We evaluate the impact of mobility on the performance of LoRAReZ in terms of packet delivery fraction, routing overhead, end-to-end...
A grid computing system provides high performance computing power, large storage space, or high communication bandwidth, to suit user requirements. The major concern in a grid computing system is the reliability, as a single node failure fails all running applications on the node. We proposed a fault-tolerance framework to improve the reliablity of a grid system. The proposed framework is novel in...
This paper deals with mm Wave MIMO link design strategy for wireless data center applications where the MIMO degrees of freedom is taken into account in multi-node packet networking environments. The problem is treated differently from the coordinated multiuser MIMO situation and the link design is optimized independently in each node with meeting control and data plane requirements for contention-based...
Finding a document or resource in an unstructured peer-to-peer network can be an exceedingly difficult problem. In this paper we propose a dynamic query routing approach that accounts for arbitrary overlay topologies, nodes with heterogeneous processing capacity and heterogenous class-based likelihoods of query resolution at nodes, reflecting the query loads and manner in which files/resources are...
Mobility and multihoming are usually considered as separate concepts and thus, they are handled by distinct protocols. Instead, our approach in this paper reverses that paradigm by proposing a unified solution that jointly manages both mobility and multihoming. Our solution is based on two protocols standardized by the IETF: Shim6 which provides a multihoming support to the end-hosts and mobile IPv6...
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