cisco ios 12 0 quality of service pdf

... Allocation in WiMAX 100 0 500 1000 1500 2000 2500 3000 3500 300 800 1400 1900 2400 2900 3400 Throughput Traffic Load UGS Fig. 8. Throughput versus traffic The fairness of the scheduling algorithms ... [30], [31] Fig. 9. Fairness versus Simulation Time rtV R 0.88 0.9 0.92 0.94 0.96 0.98 1 1.02 10 30 50 70 90 Simulation Time EDF WRR TRS+mSIR Fairness [...]... Scheduling for IEEE 802.16 ... are done using NS2 simulator. 0 0.2 0.4 0.6 0.8 1 12345 Latency Traffic load UGS Fig. 7. Latency versus traffic Figures 7, 8 show delay packets as a function of the traffic load submitted

Ngày tải lên: 21/06/2014, 05:20

... assuring network service quality but also consider the quality as perceived by the end user Perceived QoS (or Quality of Experience – QoE) is often considered as the “ultimate measure” of system performance ... number of OFDM symbols (/OFDMA slots) Therefore achieved transfer rates of a wireless link can vary significantly over short period of time This adds a “second dimension” to the problem of estimating ... Trang 1NIST (2007) “http://www.nist.gov” NIST WiMAX (2007) “http://www.nist.gov/itl/antd/emntg/ssm_tools.cfm” Trang 2Evaluation of QoS and QoE in Mobile WIMAX – Systematic

Ngày tải lên: 21/06/2014, 05:20

... Trang 1© 2006 Cisco Systems, Inc All rights reserved QoS v2.2—1Lab Guide Implementing Cisco Quality of Service (QOS) v2.1 Trang 2© 2006 Cisco Systems, Inc All rights reserved ... 2006 Cisco Systems, Inc All rights reserved QoS v2.2—18Case Study Results: JC Whitney Service Classes Trang 12© 2006 Cisco Systems, Inc All rights reserved QoS v2.2—19Case Study Results: QoS Service ... partner. Trang 23© 2006 Cisco Systems, Inc All rights reserved QoS v2.2—30WRED Profiles Case Study Results Trang 24© 2006 Cisco Systems, Inc All rights reserved QoS v2.2—31WRED Profiles Case Study

Ngày tải lên: 04/07/2014, 01:20

... Action 100KBps Weight 10  The link capacity is 190KBps  In this example, Rule A receives 130KBps, 100KBps from the guarantee, plus (10/30) * (190-100)  Rule B receives 60KBps, which is (20/30) ... Destination Service Action Rule Limit 100KBps Weight 10 Start of Sub-Rule Rule A 1 Client-1 Any ftp Rule Guarantee - 100KBps Weight 10 Rule A2 Client-2 Any ftp Rule Guarantee - 80KBps Weight 10 End of ... Guarantee - 100KBps Weight 10 Rule A3 Client-3 Any ftp Weight 10 End of Sub-Rule This Rule Base is incorrect because the sum of guarantees in Sub-Rules A1 and A2 is (80 + 80) = 160, which is

Ngày tải lên: 27/06/2014, 20:20

... Specific Rate Interface Hssi1/0/0 rate-limit input 30000000 15000 15000 conform-action continue exceed-action drop rate-limit input access-group 101 15000000 10000 10000 conform-action set-prec-transmit ... 7 is 10000000, precedence 6 is 01000000, precedence 5 is 0010000, and so on In this example, the mask 07 is in hex, which is 00000111 in decimal Hence, the mask matches precedence values 0, 1, ... interface Hssi 0/0/1 rate-limit access-group 1 input 45000000 22500 22500 conform-action set-prec-transmit 5 exceed-action set-prec-transmit 5 rate-limit input 45000000 22500 22500 conform-action

Ngày tải lên: 11/10/2016, 18:00

... users to use each of the channels that are spaced 200 kHzapart The system uses frequencies in the 900 MHz band, but other bandsaround 1800 and 1900 MHz bands have been added Some of the new featuresintroduced ... size of 480 bytes 73 5.6 ISP A: UMTS Uplink with packet size of 480 bytes 75 5.7 ISP B: UMTS Downlink with packet size of 480 bytes 80 5.8 ISP B: UMTS Uplink with packet size of 480 bytes ... throughput reflects the Quality of Service from the viewpoints of the applica- tion and user The focus of the thesis is on the influence of the network on the perceived Quality of Service and thus the

Ngày tải lên: 18/10/2013, 12:15

... that hasbeen addressed, for example, in D Hui & V Lau (2009); G Song & Y Li (2005); J Huany et al (2005); R Aggarwal et al (2011) • The WiMAX standard provides the necessary signalling ... choosing the corresponding value of α that results in the best average performance In this context, we cite M Maqbool et al (2008), H Jia et al (2007) and F Wang et al (2007) without being exclusive ... Ciblat, P (2005) Performance analysis of an OFDMA transmission system in a multi-cell environment, IEEE Transactions on Communications 12(55): 2143–2159 Gesbert, D & Kountouris, M (2007) Joint

Ngày tải lên: 21/06/2014, 05:20

... std 802.11, 1999 edition; ieee std802.11a.-1999; ieee std 802.11b.-1999; ieee std 802.11b.-1999/cor 1-2001; and ieee std 802.11d.-2001), ISO/IEC 8802-11 IEEE Std 802.11 Second edition 2005-08-01 ... corrigendum 1, IEEE Std 802.16e-2005 and IEEE Std 802.16-2004/Cor 1-2005 (Amendment and Corrigendum to IEEE Std 802.16-2004) pp 1 –822 IEEE802.21 (2010). URL: http://www.ieee802.org/21/ Iyengar, J., ... Ten users. 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Throughput of each UE [Mb/s] Autonomous RAT switching Assisted RAT switching Parallel transmission (f) Twenty users. Fig 6 Ccd f of the throughput

Ngày tải lên: 21/06/2014, 05:20

... resource allocation in OFDMA systems, Proceedings of IEEE Signal Processing Systems, 2004 SIPS 2004, pp 1-6, october 2004 Trang 10Part 2 Quality of Service Models and Evaluation Trang 12A Unified Performance ... Constant: 0.02 Constant: 1280 rtPS Video streaming (25 pictures/s) 3.5 103 Constant: 2.287510−4 Geometric:mean=12.510−4 nrtPS FTP 3.5 103 Constant: 2.287510−4 Geometric: mean=12.510−4 Table 5 ... Goldsmith A (2000) Degrees of freedom in adaptive modulation: A unified view IEEE Trans Commun,(January 2000) Einhaus, M & Klein, O (2006) Performance Evaluation of a Basic OFDMA Scheduling

Ngày tải lên: 21/06/2014, 05:20

... (Zvikhachevskaya, 2010) Priority might be set for specific categories of patients, data flows, medical services For example in (Zvikhachevskaya, 2010; Skinner et al., 2006; Bobadilla et al., 2007), the 2 ... for e.g of video and high resolution ultrasound and radiology images High bandwidth according to (J G Andrews, 2007; , Niyato et al, 2007, Istepanian et al, 2006, Zvikhachevskaya et al, 2010) can ... 1[20] ITU-T Recommmendation P.800, Series P: Telephone Transmission Quality, Methods for objective and subjective assessment of quality - Methods for subjective determination of transmission quality,

Ngày tải lên: 21/06/2014, 05:20

... Items WiMAX Satellite DSRC FM Radio GSM CDMA Max Range km <50 1000s < 1 100s <10 <10 Data Rate mbps 70 100 10 0.01 0.1 2 Cost per bit $$ $$$$ $ $ $$$ $$$ Average Latency Lo Lo ... km/hr 180 100 80 120 140 110 Table 1.1. Comparison of related wireless technologies for video on the go application has become of pertinent importance in research and industry. One of the major ... formed in June of 2001 to promote conformity and interoperability of the standard (Brit, 2010). The WiMAX technology (Ghosh, 2007) provides ease deployment as it eliminates the use of cables and

Ngày tải lên: 21/06/2014, 05:20

... traditional 802.11 cannot provide for the QoS, 802.11e was proposed to improve the functionality [2] In the 802.11 family, 802.11e is the wireless standard that defines a set of Quality of Service ... applications Provision of Quality of Service (QoS) is challenging in mobile ad hoc networks because of the dynamic characteristics of mobile networks and the limited resources of the mobile devices ... research Keywords: Quality of Service (QoS), mobile computing, multimedia, 802.11, 802.11e, survey 1 Introduction There is a rapidly growing demand for real-time multimedia services, such as video

Ngày tải lên: 21/06/2014, 06:20

... l1,1=0 Mn1,2 l1,2l =0 n1,2  l1,2h =0 n1,3  l1,3=0 n1,4  l1,4=0 · · · n j,1  l j,1 =0 j = i Mnj,2 l j,2l =0 j = i n j,2  l j,2h =0 j = i n j,3  l j,3 =0 j = i n j,4  l j,4 =0 j = ... Trang 10Table 3: Number of services in each mobile user.Classes in each mobile 1 voice 1 video 1 voice + 1 video 1 web + 1 data 10 1 10 2 10 3 10 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 ... Despite this, 10 1 10 2 10 3 10 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Number of users in Group one Simulation Theory Figure 4: Packet loss rate/outage probability of video services

Ngày tải lên: 22/06/2014, 22:20

... 1.4 1.2 1 0.8 0.6 0.4 0.2 0 −20 −10 0 10 20 30 40 E b /N0=1/µ =1/σ2 V(dB) 2 Tx 4 Tx 8 Tx 16 Tx Equation (32) Equation (35) Figure 1: Comparison of the noise enhancement versusE b /N0 = 1/σ2 Vfor ... an arbitrary number N R of receive antennas, the extended Alamouti scheme can obtain an N R -fold Trang 710 010−1 10−2 10−3 10−4 10−5 10−6 −10 −5 0 5 10 15 20 25 E b /N0 (dB) ZF simulated MMSE ... fromLemma 7: E δ8  = 4 λ −1f λ,8(λ)dλ =7 4 =1.75 (58) Trang 910 010−1 10−2 10−3 10−4 10−5 10−6 −10 −5 0 5 10 15 20 25 E b /N0 (dB) Eight-antenna scheme: ZF simulated Eight-antenna scheme: MMSE

Ngày tải lên: 23/06/2014, 01:20

... 100 bytes): (a) token drop rate and (b) packet loss rate Number of packets 0 100 200 300 400 500 600 700 800 0 100 200 300 400 500 600 (a) Number of packets 0 100 200 300 400 500 600 700 800 0 ... is 100 bytes Variable interval 0, 600, 840, 2280, 2880, 3000, 3840, 3960, 4680, 5400, 5760, 7200, 7320, 7920, 8280, 9120, 10080, 10560, 11520, 15120, 15840, 17880, 19440, 20160, 20760, 21240, ... interval0 50 100 150 200 250 300 350 400 450 500 166 168 170 172 174 176 178 180 (a) Renegotiating interval 0 50 100 150 200 250 300 350 400 450 500 0 5 10 15 (b) Renegotiating interval 0 50 100 150

Ngày tải lên: 23/06/2014, 01:20

... Trang 1Quality of ServiceBùi Thế Khang Nguyễn Thị Hương Đỗ Văn Mạnh Hà Nội, Ngày 08/07/2011 Trang 2Khái niệm QoS QoS trong mạng IP là các kỹ thuật ... trường loại dịch vụ (Service Type - ToS) trong phần mào đầu của gói dữ liệu IP 3 bit này được gọi là trường IP Precedence và có giá trị mặc định là 0.  Trường IP Precedence bằng 0 có nghĩa là gói ... trúc Guaranteed Services: Dữ liệu đi qua mạng được dành riêng 1 băng thông chắc chắn cho dữ liệu Thực hiện thông qua cơ chế RSVP và CBWFQ của QoS.  Cấu trúc Differentiated Services: Dữ liệu

Ngày tải lên: 17/10/2014, 21:08

... 12. 0( 5)T. http://www .cisco. com/univercd/cc/td/doc/product/software /ios1 20 /1 20 newft /1 20 t /1 20 t5/sbm.htm Copyright â 200 0, Cisco Systems, Inc. 12 â 200 0, Cisco Systems, Inc. www .cisco. com Econ _03 85 _02 _01 0.ppt Keep ... traffic. http://www .cisco. com/univercd/cc/td/doc/product/software /ios1 20 /1 20 newft /1 20 t /1 20 t7/pqcbwfq.htm Copyright â 200 0, Cisco Systems, Inc. 14 â 200 0, Cisco Systems, Inc. www .cisco. com Econ _03 85 _02 _01 0.ppt Keep ... in a Cisco IOS software T release: 12. 0( 5)T. http://www .cisco. com/univercd/cc/td/doc/product/software /ios1 20 /1 20 newft /1 20 t /1 20 t5/cbwfq.htm Copyright â 200 0, Cisco Systems, Inc. 22 â 200 0, Cisco...

Ngày tải lên: 11/12/2013, 14:15

... router. © 200 0, Cisco Systems, Inc. 21 © 200 0, Cisco Systems, Inc. www .cisco. com econ_387 _05 _01 0.ppt © 200 0, Cisco Systems, Inc. 5 © 200 0, Cisco Systems, Inc. www .cisco. com econ_387 _05 _01 0.ppt Need ... QoS. © 200 0, Cisco Systems, Inc. 1 © 200 0, Cisco Systems, Inc. Campus Quality of Service © 200 0, Cisco Systems, Inc. 17 © 200 0, Cisco Systems, Inc. www .cisco. com econ_387 _05 _01 0.ppt Campus ... the WAN. ã What Cisco IOS issues affect deployment. © 200 0, Cisco Systems, Inc. 16 © 200 0, Cisco Systems, Inc. www. cisco. com econ _387 _05 _01 0. ppt How 802 .1p QoS Functions How 802 .1p QoS Functions ã...

Ngày tải lên: 11/12/2013, 14:15

... avoidance, additive increase 24.23 24-5 QUALITY OF SERVICE 24-5 QUALITY OF SERVICE Quality of service (QoS) is an internetworking issue Quality of service (QoS) is an internetworking issue ... SERVICES 24-7 INTEGRATED SERVICES Two models have been designed to provide quality of Two models have been designed to provide quality of service in the Internet: Integrated Services and service ... Four cases of congestion 24.2 24-1 DATA TRAFFIC 24-1 DATA TRAFFIC The main focus of congestion control and quality of The main focus of congestion control and quality of service is service is...

Ngày tải lên: 06/03/2014, 12:20