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This paper focuses on the wireless monitoring sensor networks (WMSNs), where provide relay connectivity for the low capacity and power devices to monitor or sense the events in a monitoring area. In this paper, we propose the relay OFDMA resource allocation methods of coloring resource allocation, static resource allocation and dynamic resource allocation to improve the finite resource of time and...
In this paper, we present design and implementation aspects of a network resource provisioning module proposed for the Polish Initiative of Future Internet called System IIP (being currently one of major European projects aimed at designing the Internet of the Future). In particular, we introduce novel LP optimization models of network resource provisioning designed to minimize the resource consumption,...
With the popularity of cloud computing, high volume data needs to be processed in real-time. Therefore, many distributed stream processing systems have risen to deal with this requirement. One kind of distributed stream processing applications contains several PEs which are connected together to implement the application logic. As data is in the form of streams and it needs to be processed in real-time,...
IEEE 802.15.4 is a standard of Low-Rate Wireless Personal Area Network (LR-WPAN), which provides the communications in short distance, low data rate, low power consumption. In IEEE 802.15.4 a guaranteed time slot (GTS) structure is defined to support high quality of service (QoS) to time-critical traffic. However, the transmission bandwidth of GTS may be wasted because of the inefficient allocation...
Based on IEEE 802.15.4, a contention-free period (CFP) adopts guarantee time slot (GTS) mechanism to ensure each device can access the radio channel. However, it is hard to get the authority to access the radio channel due to more competitors access the radio channel simultaneously. To cope with this issue, we proposed a guarantee time slot mechanism to enhance the performance and utilization of using...
The optimal allocation of Communication-Intensive Applications is a well-know complex issue in Clouds. This kind of applications, due to the strong impact of communications on their performance, requires not only that their tasks are allocated on resources able to satisfy their computational requirements but also that the distance among these resources, in terms of communication delay or latency,...
Cellular networks are currently facing significant challenges as mobile Internet access adoption continues to grow over the subscriber base. The challenge that network operators are facing is that Internet data traffic consumes considerably more resources than voice calls, necessitating in that respect significant capacity enhancements. Further, this rise in system utilization has caused a considerable...
Coordinated Multi-Point (CoMP) transmission schemes can provide large spectral efficiency gains in cellular networks. Because of the coordination among neighbor basestations, the planning interval for resource allocation with CoMP is longer than for uncoordinated local transmission modes. Especially for bursty data traffic, this planning interval might be too long to keep up with changes in offered...
We present a server selection and admission control algorithm for IPTV networks that uses available bandwidth estimation to assess bandwidth available on the path from an end-user point of attachment to one or more IPTV content servers and that employs a revenue maximising admission decision process that prioritizes requests for high revenue content item types over requests for lower revenue item...
In this continuous fast world of mobile devices there is always a growing demand of high rate services. So a call has to be continuous with same data rates during a handoff. This paper deals with a novel approach DBA-CAC to reduce the call dropping probability while ensuring QoS demands are met in LTE wireless networks. The reduction is based on Adaptive Call Admission Control (Ad-CAC) scheme which...
Weighted fair queuing (WFQ) allows Internet operators to define traffic classes and then assign different bandwidth proportions to these classes. Unfortunately, the complexity of efficiently allocating the buffer space to each traffic class turns out to be overwhelming, leading most operators to vastly overprovision buffering—resulting in a large resource footprint. A single buffer for all traffic...
To reduce datacenter energy consumption and cost, current practice has considered demand-proportional resource provisioning schemes, where servers are turned on/off according to the load of requests. Most existing work considers instantaneous (Internet) requests only, which are explicitly or implicitly assumed to be delay-sensitive. On the other hand, in datacenters, there exist a vast amount of delay-tolerant...
The IEEE 802.16 standard is one of the most promising broadband wireless access systems. The standard incorporates a QoS architecture that supports both realtime and non-realtime applications. To provide QoS three data schedulers are furnished by the architecture. However, the working of the schedulers are not defined by the standard. Some researchers have attempted to fill this gap by providing different...
The time-varying feature of wireless channels usually makes the hard delay bound for data transmissions unrealistic to guarantee. In contrast, the statistically-bounded delay with a small violation probability has been widely used for delay quality-of-service (QoS) characterization and evaluation. While existing research on the statistical-delay control mainly focused on the single-hop links, in this...
This paper proposes two techniques for reducing the buffer size and computational complexity of an aggregation layer-2 switch (L2SW) in access systems by using buffer observation and multilevel dynamic bandwidth allocation (DBA). The conventional architecture for providing cousin fairness, which realizes fairness among multiple passive optical network (PON) branches, needs a huge buffer in an L2SW...
We introduce a framework for optimal resource allocation in smart grids. We consider two components of the smart grid; the power distribution network and the data communication network. By defining suitable utility functions, the power and bandwidth resources are optimally allocated. This requires the solution of the, so called, local public goods problem, in mathematical economics terminology. We...
IEEE 802.16 standard provides a revolutionary air interface that enables very high data rates over large distances. It incorporates a Quality of Service (QoS) framework to ensure satisfactory transmission of different classes of traffic. However, the actual implementation of QoS mechanisms is not defined in the standard and left out for service providers. One of the five different classes of services...
The aviation community is currently working on the standardization of data communication systems for the future air traffic management. In this context, the International Civil Aviation Organization (ICAO) has initiated a work on standardization of an IPv6-based aeronautical telecommunications network and on future radio access technologies, respectively. In this paper, we integrate L-Band Digital...
WiMAX is one of the most interesting solutions for broadband wireless access, offering QoS features for multimedia traffics and applications. However, without the definition of a mandatory scheduling algorithm for the assignment of channel resources, WiMAX standard is open to enhancements by QoS research groups and developers. In this paper, BS uplink scheduling algorithms are considered and an innovative...
Processor cores in a chip multiprocessor (CMP) typically share a large last-level cache and the off-chip memory bandwidth. Previous studies demonstrate that explicit cache capacity and off-chip bandwidth partitioning can yield better overall system performance than without partitioning. However, little work has been done to study the interaction between cache capacity partitioning and off-chip bandwidth...
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