ieee 802 11 standard security

... determine these five threshold time windows, some IEEE 802. 11 standard notations [1, 27] are used which are identified in Table In the IEEE 802. 11 standard, except for the unicast data and management ... InterfaceTable tcp q: # udp q: # NetworkLayer 8021 1 ACFNC NIC pingApp q: # Radio 8021 1 ACFNC MAC 8021 1 MgmtAP STSF Figure 5: Structure of the protected 8021 1-ACFNC-NIC in the simulation environment ... extensive experiments to compare with the IEEE 802. 11 standard model Our findings and results have clearly lead us to the conclusion that while the IEEE 802. 11 standard model is highly vulnerable to...

Ngày tải lên: 21/06/2014, 05:20

Ngày tải lên: 17/09/2012, 09:13

Ngày tải lên: 17/09/2012, 09:13

... hc) Tip sau ú l cỏc chun IEEE 802. 11a, IEEE8 02.11b, IEEE8 02.11g v mi õy nht l s i ca chun IEEE 802. 11e v IEEE 802. 11i Danh sỏch cỏc chun b chun IEEE 802. 11 * IEEE 802. 11 - The original Mbit/s ... (2003) * IEEE 802. 11h - Spectrum Managed 802. 11a (5 GHz) for European compatibility (2004) * IEEE 802. 11i - Enhanced security (2004) * IEEE 802. 11j - Extensions for Japan (2004) * IEEE 802. 11k - ... enhancements * IEEE 802. 11l - (reserved and will not be used) * IEEE 802. 11m - Maintenance of the standard; odds and ends * IEEE 802. 11n - Higher throughput improvements * IEEE 802. 11o - (reserved...

Ngày tải lên: 05/04/2013, 15:52

... technologies: IEEE 802. 11a, 802. 11b, 802. 11g, and 802. 11n In addition, a brief overview of the updated security standard for IEEE 802. 11 networks, IEEE 802. 11i, is provided 2.1 IEEE 802. 11 Variants ... Wireless Security, 2004 IEEE Standard 802. 11, 1999 Edition IEEE Standard 802. 11i, 2004 Edition Also available at http://standards .ieee. org/getieee802/download /802. 11i-2004.pdf IEEE Standard 802. 1X, ... availability for each standard Table A-1 Summary of IEEE 802. 11 Standards IEEE Standard 802. 11a 802. 11b 802. 11d 802. 11e Description Purpose Keywords and Other Remarks A physical layer standard that operates...

Ngày tải lên: 14/02/2014, 08:20

... tất chuẩn thành phần IEEE 802. 11 sử dụng để biểu thị chuẩn 802. 11, gọi 802. 11 gốc (802. 11 legacy)     9/4/2012  Sau chuẩn, IEEE 802. 11a (băng tần 5,8 GHz) IEEE 802. 11b (băng tần 2,4 GHz), ... chuẩn WLAN Chuẩn IEEE 802. 11 thức ban hành năm 1997 IEEE 802. 11 (chuẩn WiFi) biểu thị tập hợp chuẩn WLAN phát triển ủy ban chuẩn hóa IEEE LAN/MAN (IEEE 802. 11) Thuật ngữ 802. 11x sử dụng để biểu ... Ad-hoc) 11 9/4/2012 Các chuẩn an ninh hỗ trợ IEEE 802. 11 IEEE 802. 11 (WEP) IEEE 802. 1X Wi-Fi Protected Access (WPA) Wi-Fi Protected Access (WPA2) 12 9/4/2012 Chuẩn an ninh Các phương pháp xác thực IEEE...

Ngày tải lên: 09/03/2014, 09:20

... describes IEEE 802. 11 Wireless Local Area Network (WLAN) Standard It describes IEEE 802. 11 MAC Layer in detail and it briefly mentions IEEE 802. 11a, IEEE 802. 11b physical layer standard and IEEE 802. 11e ... be an AP, a bridge, or a router Because IEEE 802. 11 is one of the family of IEEE 802 standards, an IEEE 802. 11 frame must be translated from the IEEE 802. 11 format to the format of the other LAN ... 67 67 67 68 68 69 69 69 70 70 70 IEEE 802. 11 PROTOCOLS 8.1 Overview of IEEE 802. 11 Standards 8.2 IEEE 802. 11E MAC PROTOCOL 8.2.1 Enhanced Distribution...

Ngày tải lên: 09/03/2014, 13:20

Ngày tải lên: 23/03/2014, 22:20

Ngày tải lên: 28/04/2014, 10:49

... 500 Bytes: IEEE 802. 11+ vs DCW (d) 1500 Bytes: IEEE 802. 11+ vs DCW (f) 2312 Bytes: IEEE 802. 11+ vs DCW Figure Normalized throughput (a) 500 bytes: DCF versus DCW (b) 500 bytes: IEEE 802. 11+ versus ... 1500 Bytes: IEEE 802. 11+ vs DCW (e) 2312 Bytes: DCF vs DCW (f) 2312 Bytes: IEEE 802. 11+ vs DCW Figure Collision probability (a) 500 bytes: DCF versus DCW (b) 500 bytes: IEEE 802. 11+ versus DCW ... differences in IEEE 802. 11+ [4] and DCW, the scale for the y-axis in Figure 7a, c, e (DCF versus DCW) as well as Figure 7b, d, f (IEEE 802. 11+ versus DCW) is different IEEE 802. 11 + is very close...

Ngày tải lên: 20/06/2014, 22:20

... the frame is dropped Table contains the standard values of the EDCA parameters for IEEE 802. 11 HR/DSSS (known as 802. 11b) [1] Furthermore, for 802. 11b the standard defines NC = 4, M equal to or ... attack,” IEEE/ ACM Transactions on Networking, vol 14, no 6, pp 116 7 117 8, 2006 [11] K J Park, J Choi, K Kang, and Y C Hu, “Malicious or selfish? Analysis of carrier sense misbehavior in IEEE 802. 11 ... LAN Medium Access Control(MAC) and Physical Layer (PHY) Specifications,” IEEE Std 802. 11- 2007(Revision of IEEE Std 802. 11- 1999), 2007 [2] Madwifi Project, http://madwifi-project.org/ [3] G Bianchi,...

Ngày tải lên: 21/06/2014, 11:20

... 802. 11e MAC layer MAC common part sublayer (MAC CPS) Security sublayer 802. 11 PHY 802. 11 PHY MAC common part sublayer (MAC CPS) Security sublayer 802. 16 PHY 802. 16 /802. 11 dual radio gateway 802. 11 ... the IEEE 802. 11e and the IEEE 802. 16 standards are quite similar We could directly map each of the four services in the IEEE 802. 11e standard into one of the services in the IEEE 802. 16 standard, ... collaborative IEEE 802. 11 /802. 16 network Numerical results are provided in Section with important conclusions drawn in Section Overview of the IEEE 802. 11 and the IEEE 802. 16 MAC Protocols 2.1 IEEE 802. 11...

Ngày tải lên: 21/06/2014, 11:20

... 802. 11 b, a myriad of research has been conducted for other standards in the 802. 11 family, confirming the suitability of 802. 11 WLANs for vehicle scenarios [6, 7] 2.2 Handoff In the IEEE 802. 11 ... “An Integrated CMOS RF Synthesizer for 802. 11a Wireless LAN,” IEEE Journal of SolidState Circuits, vol 38, no 10, pp 1767–1770, 2003 [12] IEEE 802. 11, “Part11: Wireless LAN Medium Access Control ... scanning delay Our approach may be even more favorable for 802. 11 a than for 802. 11 b, since the scanning delay will be even higher for 802. 11 a with 32 channels Conclusions Much research has been...

Ngày tải lên: 21/06/2014, 17:20

... transmitted with the peak rate 54 Mbps of IEEE 802. 11a wireless LANs When the multicast and uplink user payloads of 88 bits or 1000 bits are transmitted in IEEE 802. 11a wireless LANs, we present the ... for IEEE 802. 11 wireless LANs,” EURASIP Journal on Wireless Communications and Networking, vol 2008, Article ID 598038, 10 pages, 2008 [11] K Xu, M Gerla, and S Bae, “How effective is the IEEE 802. 11 ... University References [1] IEEE, IEEE Wireless LAN Edition, IEEE Press, New York, NY, USA, 2003 [2] S Choi and K Choi, “Reliable multicast for wireless LAN,” in Resource, Mobility, and Security Management...

Ngày tải lên: 21/06/2014, 23:20

... the heavy traffic load (B = 11) is imposed on IEEE 802. 11a wireless LAN with 20 STAs Figure 8: Mean delay bounds when the medium traffic load (B = 7) is imposed on IEEE 802. 11a wireless LAN with 30 ... traffic load (B = 8) is imposed on IEEE 802. 11a wireless LAN with 30 STAs Figure 11: Mean delay bounds when the medium traffic load (B = 5) is imposed on IEEE 802. 11a wireless LAN with 40 STAs 500 ... time is microseconds in IEEE 802. 11a wireless LANs In Figures 4, 5, 6, 7, 8, 9, 10, 11, and 12, we present the simulation results of the maximum delay bounds of IEEE 802. 11a wireless LAN with the...

Ngày tải lên: 21/06/2014, 23:20

... denotes that 802. 11b APs are saturated, STAs in LLF mechanism are likely to select 802. 11b APs since the loaded traffic on the 802. 11b APs ( 11 Mbps) is less than that on the 802. 11a APs (≤54 Mbps) ... Gigabit Ethernet AP 802. 11b channel #1 AP 802. 11b nAP channel #11 10.1.1.100 cAP 10.1.2.100 Wireless network monitor (NetMon) 10.1.1.1 s1 10.1.1.2 s2 Windows laptops (XP) 802. 11b NIC STA 10.1.2.1 ... (250,250) (0,300) (300,300) 802. 11a AP (54 Mbps) 802. 11b AP (11 Mbps) Figure 12: Simulation environment Throughput per a STA (Kbps) 800 600 400 200 50 Value 300 × 300 m2 11 and 54 Mbps (Fixed) 100...

Ngày tải lên: 21/06/2014, 23:20

... QoS [1] IEEE 802. 11, IEEE Standards for Information Technology— Telecommunication and Information Exchange between Systems—Local and Metropolitan Area Network—Specific Requirement—Part 11: “Wireless ... over IEEE 802. 11 wireless local area networks,” IEEE Wireless Communications, vol 13, no 1, pp 22–29, 2006 [10] W Wang, S C Liew, and V O K Li, “Solutions to performance problems in VoIP over a 802. 11 ... Italy, July 2001 [4] D P Hole and F A Tobagi, “Capacity of an IEEE 802. 11b wireless LAN supporting VoIP,” in Proceedings of the IEEE International Conference on Communications (ICC ’04), vol...

Ngày tải lên: 22/06/2014, 19:20

... Section gives the conclusions of this paper IEEE 802. 11 DCF BASED ON THE CSMA/CA PROTOCOL Figure depicts an example configuration covered by IEEE 802. 11 standards [5, 6], where a set of stations ... the IEEE 802. 11 DCF simulator are summarized in Table As in [8], these parameter values closely follow those specified for the frequency hopping spread spectrum (FHSS) PHY layer in IEEE 802. 11b standard ... throughput 10.9465 11. 1360 10.8232 11. 4992 11. 5067 11. 2967 10.2350 10.0668 10.2854 15.2702 15.1787 16 .110 5 STA4-AP1 throughput AP1-STA1 throughput 10.9170 10.7715 11. 3074 11. 3690 10.1881 8.9339...

Ngày tải lên: 22/06/2014, 22:20

... element transmission times defined by IEEE 802. 11 specifications Furthermore, we have suitably modified the model of the IEEE 802. 11 wireless station provided in the standard library of OPNET in order ... minimum data loss IEEE 802. 11 Performance Analysis 73 Table 2: Packet delay and throughput efficiency for a small network size (l = 1500 bytes) n=2 n=3 n=4 n=5 n=6 IEEE 802. 11 standard W = 32, m ... [3] IEEE, IEEE standard for wireless LAN medium access control (MAC) and physical Layer (PHY) specification: higherspeed physical layer extension in the 2.4 GHz band,” IEEE 802. 11b, 1999 [4] IEEE, ...

Ngày tải lên: 23/06/2014, 00:20