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Several interconnected layers of network form the smart grid. The Home Area Network (HAN) is the lowest layer of this grid, where reports about the various parameters associated with electrical devices are generated. For example, parameters could include information about the operation, power consumption, energy losses, power factor, etc. associated with the electrical devices. The reports generated...
In this paper, we present a delay-optimal packet scheduler for processing the M2M uplink traffic at the M2M application server (AS). Due to the delay-heterogeneity in uplink traffic, we classify it broadly into delay-tolerant and delay-sensitive traffic. We then map the diverse delay requirements of each class to sigmoidal functions of packet delay and formulate a utility-maximization problem that...
We show that delay impulsive systems are a natural framework to model wired and wireless NCSs with variable sampling intervals and delays as well as packet dropouts. Then, we employ discontinuous Lyapunov functionals to characterize admissible sampling intervals and delays such that exponential stability of NCS is guaranteed. These results allow us to determine requirements needed to establish exponential...
In Remote Sensor Arrange deferral and vitality are vital limitations. It is watched that postponement, parcel conveyance proportion, vitality, rate transmission issues are created when a bundle is sent from sources to goal. This paper manages issues of postponement and vitality. Also, it deals with a Course choice paradigm which depends on least hub postponement and vitality utilization. At the point...
Data collection and transmission are the fundamental operations of Wireless Sensor Networks (WSNs). A key challenge in effective data collection and transmission is to schedule and synchronize the activities of the nodes with the global clock. This paper proposes the Bandwidth Efficient Hybrid Synchronization Data Aggregation Algorithm (BESDA) using spanning tree mechanism (SPT). It uses static sink...
In this paper, it is proposed an algorithm to allocate resource blocks for Long Term Evolution (LTE) communication systems where it is taken into account the maximum delay guarantee and Modulation and Coding Scheme (MCS) restrictions of the downlink transmission. The proposed algorithm considers the channel quality and the delay target value for each user in order to decide on the scheduling of available...
We propose two novel methods of service delay control for multiuser wireless systems that employ a scheduling scheme based on the Cumulative Density Function (CDF) of user channels in correlated fading environments. The first method allows for different hard delay deadlines for the users. The second method relaxes the deadline enforcement into “soft” deadlines in order to take better advantage of...
Most of the scheduling algorithms were concentrated on scheduling of the packets. In Dynamic Multilevel Priority (DMP)[4] packet delivery scheme the packets were scheduled in three priority queue pr1, pr2, pr3 respectively. In this scheme, pr1 is scheduled in FCFS, pr2 is scheduled as non-real time with remote data and pr3 is also non-real time with local data. Here starvation will occur in pr1 because...
Wireless Sensor Networks (WSNs) are used for monitoring and data collection purposes. A key challenge in effective data collection is to schedule and synchronize the activities of the nodes with global clock. This paper proposes the Synchronized Data Aggregation Algorithm (SDA) using spanning tree mechanism. It provides network-wide time synchronization for sensor network. In the initial stage algorithm...
Efficient and reliable operation of the Smart Grid largely depends on performance of the communication infrastructure. This paper investigates the opportunities to use existing public IP communication paradigm instead of constructing an end to end dedicated architecture confining to Smart Grid applications. Even though this concept is favorable as means of decreasing the installation expenditure,...
Quality of service (QoS) requirements are usually different from user to user in a multiaccess system, and it is necessary to take the different requirements into account when allocating the shared resources of the system. In this paper, we consider one QoS criterion-average packet delay in a multiaccess system, and we combine information theory with queueing theory in an attempt to analyze whether...
We consider the problem of controlling the user service delays for a system that employs a scheduling scheme based on Cumulative Density Functions (CDF) of user channels in a correlated Rayleigh fading environment. We first formulate and solve this control problem as a Markov Decision Process (MDP) on the system state space formed by the user channel conditions and delay times. The MDP formulation,...
Optical Burst Switching (OBS) is a novel data transferring paradigm in rapidly growing Internet communication. The QoS factor of this OBS is syncing the bursts and available channels through a scheduling strategy such that the burst drop is minimal. Affirmation of the recent literature confirms that only 3 strategies Horizon, FFUC-VF and LAUC-VF are considerably performing to schedule bursts. But...
Virtual Multiple-Input Multiple-Output (MIMO) is a promising uplink technology that can meet the throughput demand of Long-Term Evolution-Advanced (LTE-A) systems. However, the complexity of scheduling virtual MIMO is a challenge; existing virtual MIMO is therefore limited to best effort applications. We investigate the resource allocation and scheduling problem in a heterogeneous virtual MIMO system...
The Long Term Evolution (LTE) broadcast is a promising solution to cope with exponentially increasing user traffic by broadcasting common user requests over the same frequency channels. In this paper, we propose a novel network framework provisioning broadcast and unicast services simultaneously. For each serving file to users, a cellular base station determines either to broadcast or unicast the...
Quality of service (QoS) is still a crucial issue that deals with the IEEE 802.16 network performance. Scheduling is a key component of the MAC IEEE 802.16 layer which ensures QoS for different service classes. In this paper, we give a detailed simulation study for some scheduling algorithms by evaluating their performance in order to support the QoS classes. We propose a new WiMAX scheduling algorithm...
Existing mobile video applications are continuously driving up the demand for throughput and better quality of service (QoS) for future Long Term Evolution-Advanced (LTE-A) networks. Multi-User Multiple-Input Multiple-Output (MU-MIMO) is one of the most promising technologies that would meet the throughput demand. Unfortunately, existing MU-MIMO schemes do not consider metrics such as delay, and therefore,...
By employing a relay station (RS) on the WiMAX networks, it offers an extended coverage and improved capacity over wireless broadband. However the mobile station (MS) such that connected to the RS has effect the system performance due to increase of the MS numbers. In WiMAX the base station (BS) adopts the centralized-based polling mode where the best way to guarantee the delay bound is by polling...
We consider a broadcast erasure channel where a single transmitter broadcasts to M receivers, where the channel between the transmitter and each receiver is an independent erasure channel with success probabilities q = (q1, …, qM). Prior work on this model by Cogill, Shrader and Ephremides (2011) established bounds on the expected delays incurred in transmitting a collection of C packets to each of...
The support of delay-sensitive applications like VoIP, video conferencing, video streaming, etc. on scheduled mesh networks requires careful configuration of routing and scheduling. We formulate a delay-optimal joint routing and scheduling optimization problem that minimizes the maximum average delay perceived by any flow under the physical interference model. Due to the non-convex nature of this...
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