capacity level of service and demand peaking

... 1.1 Overview of Quality of Service 1.2 Application -level Quality of Service 1.3 Overview of Sensor Networks 1.4 Overview of loosely coupled distributed 1.5 Motivation and Contribution ... situation, the question of the quality of service for these applications will become important This thesis addresses some of the issues of provisioning of application -level quality of service either for ... INTRODUCTION of loosely coupled distributed systems in Section 1.4 In Section 1.1 Overview of Quality of Service The term Quality of Service in the context of a computer system refers to the ability of...

Ngày tải lên: 11/09/2015, 14:22

... Choice and the Laws of Demand x The principle of rational choice leads to the law of demand q When the price of a good goes up, the marginal utility per dollar from that good goes down and we demand ... of good x x © 2003 McGraw-Hill Ryerson Limited 8 - 38 Rational Choice and the Law of Demand MUx decreases as we buy more x (diminishing marginal utility) and x MUy increases as we buy less of ... MUy/Py and we maximize utility (but we now consume less x and more y than before the price increase) x © 2003 McGraw-Hill Ryerson Limited 8 - 39 Rational Choice and the Law of Demand x Quantity demanded...

Ngày tải lên: 29/03/2014, 17:20

... UGS, rtPS, nrtPS and BE, based on the requested bandwidth of UGS, the required minimum bandwidth of rtPS and nrtPS and the queue length of BE service respectively If remaining bandwidth exists, ... classified and associated with a service class The IEEE 802.16 standards define five service classes: Unsolicited Grant Service (UGS), extended real-time Polling Service (ertPS), real-time Polling Service ... synthesis table of the main scheduling mechanisms and highlights the main points of each of them Section does the final consideration of this chapter WiMAX MAC scheduling and QoS: Issues and challenges...

Ngày tải lên: 21/06/2014, 05:20

... scheduling services have different and sometimes conflicting requirements UGS services must always have their delay and bandwidth commitment met, so simply reserving enough bandwidth for those services ... Algorithm and Bandwidth Allocation in WiMAX fixed allocation for UGS, EDF for rtVR, WFQ for nrtVR, and equal division of remaining bandwidth for BE Although EDF takes care of the delay requirement of ... connections In [27], the authors use a first level of strict priority to allocate bandwidth to UGS, rtVR, nrtVR and BE services in that order; and then on a second level in the hierarchy, different scheduling...

Ngày tải lên: 21/06/2014, 05:20

... (resp C) and user k of cell A at subcarrier n and OFDM block m Of course, the average channel gains A B C E | Hk (n, m)|2 , E | Hk (n, m)|2 and E | Hk (n, m)|2 depend on the position of user k ... requirement of user k in nats/s/Hz ergodic capacity associated with user k GNR of user k in bands I, P A resp sharing factors of user k in bands I, Pc resp power allocated to user k in bands I, P ... current level of multicell interference The result of each iteration is then used to update the value of multicell interference for the next iteration of the algorithm The convergence of this...

Ngày tải lên: 21/06/2014, 05:20

... words, if we consider an offered capacity system equal to C and types of service class (class and 2) If class (i.e aggreagted calls) uses I units then 154 Quality of Service and Resource Allocation ... the format of the OFDMA slot is data subcarriers of OFDM symbols The total number of OFDMA slots in a mobile WiMAX frame corresponds to S × Ts where S = Ld and Ts is the number of OFDM symbol ... link WiMAX also defines a concept of a service flow A service flow is a unidirectional flow of packets with a particular set of QoS parameters and is identified by a service flow identifier (SFID) The...

Ngày tải lên: 21/06/2014, 05:20

... S1, the service time of an REQ is X1 = Y, and the Laplace-Stieltjes transform of X1 is therefore given by that of Y Thus the service time of an REQ is given by X= X0 w.p 1−ρ Y w.p ρ (14) and the ... studying the impact of different parameters on the performance of contention-based services of IEEE 802.16 We evaluate the impact of the number of SSs (N) and the initial backoff window (W) on ... performance of the best-effort service of WiMAX networks This model can capture the performances of both unsaturated and saturated cases, and derives the expressions for network throughput and packet...

Ngày tải lên: 21/06/2014, 05:20

... quality level support for multimedia applications is required to satisfy the growing demands of fixed and mobile users, while increasing the profits of the content providers With regard to Quality of ... 192 16 Quality of Service and Resource Allocation in WiMAX Will-be-set-by-IN-TECH J G Andrews; A Ghosh & R Muhamed (2007) Fundamentals of WiMAX: Understanding Broadband Wireless Networking, ... delay rate and throughput, are generally used to measure the impact on the quality level of multimedia streaming from the 194 Quality of Service and Resource Allocation in WiMAX perspective of the...

Ngày tải lên: 21/06/2014, 05:20

... DV and CTC – Map 231 232 Quality of Service and Resource Allocation in WiMAX Fig Blocking probabilities for DV and CTC – Map1 Fig 10 System throughput for DV and CTC – Map2 Evaluation of QoS and ... results of assessing quality of VoIP (Voice Over IP) conversations CTC and nbLDPC codes are compared in terms of system capacity and resulting quality of experience (QoE) performance of VoIP ... example of the process of estimating resources for four frames 226 Quality of Service and Resource Allocation in WiMAX Value of guard channel (threshold) is adjusted based on the value of the...

Ngày tải lên: 21/06/2014, 05:20

... one out of levels of urgency The first level involves ambulance and emergency calls and is given the highest priority with rate-guaranteed and delay-bounded service parameters The second level ... purpose of its utilization across e-health mobile applications Although, the standard is incapable of suiting real-time video and voice traffic demands on account of no priority provision and lack of ... safety and healthcare 246 Quality of Service and Resource Allocation in WiMAX E (electronic)-health terminology lumps a variety of medicine and communication services associated with rendering of...

Ngày tải lên: 21/06/2014, 05:20

... increased bandwidth compared to 3G systems, which bandwidth capacity will be further expanded in part ‘m’ of the standard (Ahmandi, 2011, written by Intel’s chief technology officer) Broadband wireless ... Quality of Service and Resource Allocation in WiMAX WiMAX and IP handoff management (Chen & Hsieh, 2007) and in that way reduce the number of control messages For further general examples of cross-layer ... TV, and video-on -demand As an example, the UK’s BBC iPlayer supports the former two of these unicast services, though using a form of block-based streaming in which differences in bandwidth capacity...

Ngày tải lên: 21/06/2014, 05:20

... Mobile WiMAX is based of OFDMA physical layer of the 802.16e-2005 standard, which is a revision of the fixed WiMAX standard IEEE 802.16e provides functionalities such as BS handoffs, MIMO transmit/receive ... are routed and given priority due to the service class name associated with them and the scheduling type, which handles the bandwidth request/grant mechanism The silver service class and the Real-time ... from the mean value of the inter-arrival time and the shape, and finally the mean off time is derived from the correlation length of the trace and the lognormal distribution of packet size The...

Ngày tải lên: 21/06/2014, 05:20

... characteristics of the offense, the offender and the victim It seems that men and women mostly commit the same types of crimes, but that the rates of female offending are substantially lower than male offending ... population of violent offenders in Switzerland A second aim was to assess socio-demographic, psychiatric and offense-related characteristics of female violent offending in Switzerland and to compare ... hospitalization, family history of psychiatric disorders, substance abuse), and offense-related characteristics (e.g number and type of previous offenses; characteristics of the index offense: relationship...

Ngày tải lên: 11/08/2014, 17:20

... competitive Market Forces of Supply and Demand Part I Demand Demand The quantity demanded of any good is the amount of the good that buyers are willing and able to purchase Law of demand: the claim that ... of a good and the quantity demanded Example: Helen’s demand for lattes  Notice that Helen’s preferences obey the Law of Demand Price Quantity of of lattes lattes demanded $0.00 16 1.00 14 2.00 ... computers, and therefore less software Software demand curve shifts left Other examples: college tuition and textbooks, bagels and cream cheese, eggs and bacon 15 Exercise III-1: Demand Curve Draw a demand...

Ngày tải lên: 15/04/2015, 18:35

... (%∆Q)/(%∆P) Chapter 2: The Basics of Supply and Slide Elasticities of Supply and Demand Price Elasticity of Demand Price Elasticity of Demand  So the price elasticity of demand is: ∆Q/Q P ∆Q EP = = ∆P/P ... the demand is price inelastic Chapter 2: The Basics of Supply and Slide Elasticities of Supply and Demand Price Elasticity of Demand Price Elasticity of Demand  The primary determinant of price ... Inelastic Demand EP = Q* Chapter 2: The Basics of Supply and Quantity Slide Elasticities of Supply and Demand Other Demand Elasticities Other Demand Elasticities  Income elasticity of demand measures...

Ngày tải lên: 26/09/2015, 15:09

... LIST OF TABLES AND CHARTS Tables: Table 1: Teachers’ and students’ attitudes towards speaking skill and the role of teaching and learning speaking skills 20 Table 2: Students’ purposes of learning ... Concepts of Speaking 1.2.2 Characteristics of Speaking 1.2.3 The Development Approach of Speaking Skill 1.3 Problems with Speaking and Speaking activities 10 1.3.1 Problems with Speaking 1.3.2 ... Pre-Intermediate level of Proficiency at Hanoi University of Industry” is submitted in partial fulfillment of the requirements for the degree of Master of Arts is the result of my own work, except...

Ngày tải lên: 07/11/2012, 14:50

... Underlying such failures is often a lack of understanding of some of the key principles of service marketing and management Technological change affects many other types of services, too, from airfreight ... Dabholkar, "Technology in Service Delivery: Implications for Self -Service and Service Support," in T A Schwartz and D Iacobuci, Handbook of Services Marketing and Management (Thousand Oaks, CA: Sage ... and equipment and facilities medium-contact services: services that involve only a limited amount of contact between customers and elements of the service organization low-contact services: services...

Ngày tải lên: 07/02/2013, 09:52

... treatment plants, and sewage treatment plants one each from the upstream of Andong area to downstream of Busan area of Nakdong river basin Estrogenic activity and concentration of estrogenic substances ... Andong Daegu Busan Andong Waegwan Gangjung Daegu Gumho Riv Goryung Brd Hwang Riv Jeokpo Brd Namji RESULTS AND DISCUSSION Nam Riv Fig shows the sampling points along of Nakdong River in May, and ... October 2002 and in March, and September 2003 Samples were collected from points in Mylyang Riv Samrangjin Busan Fig Sampling points of Nakdong River basin - 204 - Journal of Water and Environment...

Ngày tải lên: 05/09/2013, 08:40