The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we focus on the resource allocation based on scheduling algorithms. Unlike the existing solutions, we introduce the concept of Proportional-Integral-Derivative (PID) controller in the scheduling algorithm called PID-Scheduler in order to reach the system stability. The stability is considered in terms of throughput and delay which meet the nodes needs. In order to allocate the resources...
Cloud Computing has emerged as a service model that enables on-demand network access to a large number of available virtualized resources and applications with a minimal management effort and a minor price. The spread of Cloud Computing technologies allowed dealing with complex applications such as Scientific Workflows, which consists of a set of intensive computational and data manipulation operations...
Long Term Evolution (LTE) is the new generation wireless networks that support all IP transmission for multimedia services. One of the major challenges in LTE network is to provide the packet scheduling scheme that can supports the Quality-of-Service (QoS) requirements of multimedia services. In this paper, a Quality-of-Service (QoS) aware packet scheduler for Real Time (RT) downlink communication...
Long Term Evolution (LTE) is a breakthrough in broadband technology, which aims to support several high level quality and real time multimedia services for mobile users which were important concern in the preceding generation of mobile networks. In this paper, a Quality-of-Service (QoS) aware packet scheduler for Real Time (RT) downlink communication in LTE was designed. A resource block (RB) preserver...
Long Term Evolution (LTE) is a breakthrough in broadband technology which aims to support several high level quality and real time multimedia services for the mobile users. This paper proposes a resource block preserver (RBP) scheduling algorithm which optimizes the performance of the downlink transmission system in LTE network. The resource block preserver algorithm has two layers, upper and lower...
A light-trail is a generalization of a lightpath in which intermediate nodes can take part in the time-shared communication along a path. Light-trail has been proposed to support on-demand services including the triple play of voice, video and data on optical networks. Since light-trail is a timesharing media, we require a good medium access control protocol to improve the quality of these services...
In this paper a 3-level quality of service (QoS) scheduling is applied to a reference Data Center (DC) optical core switch with wavelength conversion and queueing capability. The scheduling approach is able to manage guaranteed traffic and statistical multiplexed traffic, this last further divided in pure loss traffic and delay tolerant traffic. With respect to previous works mainly focused on aggregation...
Integration of efficient scheduling policies in radio resource management (RRM) strategies is nowadays, of a paramount importance for the success deployment of wireless Long Term Evolution (LTE) systems. This is particularly effective for downlink where data rates are important and where scheduling decision should enable to allocate, in each Transmission Time Interval (TTI), appropriate resource blocks...
This paper introduces a novel LTE uplink scheduler called Hybrid Z-Based QoS Scheduler (HZBQoS), a fully standard-compliant LTE scheduler designed to operate in ONU-eNB devices of integrated LTE/TDM-EPON networks. The HZBQoS scheduler provides delay bound and guaranteed rate even when the backhaul and mobile network are heavily loaded. We evaluated the proposed scheduler under heterogeneous traffic...
This paper introduces a novel time-domain (TD) LTE uplink scheduler called Z-Based QoS Scheduler (ZBQoS) which is fully standard-compliant. The ZBQoS scheduler provides Quality of Service (QoS) requirements, supporting delay bound and guaranteed rate even when the network is heavily loaded. We evaluate the proposed scheduler under heterogeneous traffic and compare its performance to that of another...
Video and voice transmission over wireless broadband has become popular and attracted more attention ever since. More and more hand phone owners use their phones to play video and voice over the Internet. Transmitting video and voice in a good quality over the wireless networks is a challenge to service providers. LTE, also known as one of the beyond 3G wireless network technology is designed to have...
In this paper, we propose a strategy for resource allocation for different traffic classes at the Medium Access Control (MAC) layer of wireless systems based on Orthogonal Frequency Division Multiple Access (OFDMA), such as the recent Long-Term Evolution (LTE) wireless standard. In order to achieve inter-class fairness, we propose a modification of the Virtual Token Modified Largest Weighted Delay...
With the mobile networks migrating towards LTE-Advanced and all-IP networks, people expect to connect to the Internet anytime, anywhere and from any IP-connected device. Moreover, nowadays people tend to spend much of their time consuming multimedia content from various devices with heterogeneous characteristics (e.g., TV screen, laptop, tablet, smartphone, etc.). In order to support uninterrupted,...
High response quality is critical for many best-effort interactive services, and at the same time, reducing energy consumption can directly reduce the operational cost of service providers. In this paper, we study the quality-energy tradeoff for such services by using a composite performance metric that captures their relative importance in practice: Service providers usually grant top priority to...
ITU and other SDOs have launched oneM2M initiative recently and the standardization of M2M is now accelerating. The current access and core networks built for today's network services will be used as a common network infrastructure for M2M network with some modifications. When the current access and core networks are used for both the current network services and M2M services, communications equipments...
Five types of service flows are defined in the standard of IEEE 802.16. Each service flow has its own type of quality of service (QoS) requirement. Some scheduling algorithm is needed to satisfy the QoS requirement of each class. Traditional base station (BS) allocates bandwidth according to the request of user. However, the request may not equal to the real requirement in some situation. Thus, the...
A conventional computational system architecture is formed by a processor which executes tasks and a management unit which controls the task execution routine according to a required strategy. Different strategies (or task scheduling schemes) are developed to maximize system performance. The system performance can be maximized according to the specification of each algorithm, if a task is schedulable...
In this paper, we propose an uplink resources allocation strategy for Long Term Evolution (LTE) systems. In time domain, the scheduler aims at ensuring more fairness by using a metric updated every new uplink transmission round, giving higher priority to users who are the farthest from their minimum QoS requirements. Then, resources are allocated in a way to achieve the required rate with the minimum...
Scheduling protocols that provide both rate and fairness guarantees, such as Weighted Fair Queuing, distribute the unused capacity among the flows in proportion to the reserved rate of the flows. Thus, flows whose reserved rate is the largest will receive a larger share of the unused capacity. We present a scheduling algorithm that first distributes unused capacity to those flows whose reserved rate...
In this paper, we propose a scheduling algorithm for mobile WiMAX networks that distributes dynamically the bandwidth among service flows while giving real-time packets more chances to satisfy their QoS requirements. The scheduling in the proposed algorithm is assisted by the subscriber stations, hence requiring two-schedulers, a scheduler at the BS and another one at the SS, where preemption is applied...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.