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Page 1Version 1.0 IEEE 802 March 2011 workshop EEE 802 IEEE 802.11 802.11 Wireless Local Area Networks Bruce Kraemer Chair 802.11 V09.

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Presentation on theme: "Page 1Version 1.0 IEEE 802 March 2011 workshop EEE 802 IEEE 802.11 802.11 Wireless Local Area Networks Bruce Kraemer Chair 802.11 V09."— Presentation transcript:

1 Page 1Version 1.0 IEEE 802 March 2011 workshop EEE 802 IEEE Wireless Local Area Networks Bruce Kraemer Chair V09

2 Page 2Version 1.0 IEEE 802 March 2011 workshop EEE 802 Disclaimer… At lectures, symposia, seminars, or educational courses, an individual presenting information on IEEE standards shall make it clear that his or her views should be considered the personal views of that individual rather than the formal position, explanation, or interpretation of the IEEE. IEEE-SA Standards Board Operation Manual (subclause 5.9.3) 9-Feb-142

3 Page 3Version 1.0 IEEE 802 March 2011 workshop EEE 802 Introduction and Agenda 9-Feb-143 Presentation Context History Market Science Challenges Standard Baseline Extensions Further Information Amendment Project details References

4 Page 4Version 1.0 IEEE 802 March 2011 workshop EEE 802 Workshop Presentations March 2011 IEEE 802 Workshop Presentations Overview of 802 rules

5 Page 5Version 1.0 IEEE 802 March 2011 workshop EEE 802

6 Page 6Version 1.0 IEEE 802 March 2011 workshop EEE 802 IEEE 802 Organization Standards Activities Board IEEE Standards Association CSMA/CD Ethernet Token Passing Ring Wireless WLAN Wireless Personal Area Networks Mobile Broadband Wireless Access Co-existence TAG Sponsor IEEE 802 Local and Metropolitan Area Networks (LMSC) Sponsor Resilient Packet Ring Radio Regulatory TAG Broadband Wireless Broadband Access Media Independent Handoff Higher Layer LAN Protocols Wireless Regional Area Networks IEEE : ~500 Participants Voting Members ~300

7 Page 7Version 1.0 IEEE 802 March 2011 workshop EEE 802

8 Page 8Version 1.0 IEEE 802 March 2011 workshop EEE 802 Activity History 9-Feb-14 Feb 14, 1876: Bell files telephone patent June 1897: Marconi work- Signaling through Space without Wires 1970: ALOHAnet operational (Abramson, 9600 baud) 1976: Metcalf & Boggs: Ethernet: Distributed Packet-Switching for Local Computer Networks 1980: Project 802 formed (1 Mbps initially, revised to 20 Mbps 1982) (Feb 1980, 125+ attendees) 1980: Ethernet Bluebook published (September, Digital. Intel, Xerox) 1981: FCC issues NOI for unlicensed spectrum 1983: First version of Base5 spec completed 1985: FCC opens ISM Band- spread spectrum allowed 1985: First version of published (10 Mbps) 1987: Project 802.4L – Wireless Token Bus begins 1990: IEEE 802 drops 802.4L starts project 1990: BASE-T (802.3i) released 1997: IEEE standard approved (2.4GHz – 1Mbps) 1999: Apple IBook introduced with integrated (AirPort)

9 Page 9Version 1.0 IEEE 802 March 2011 workshop EEE 802 Activity History 1997: IEEE standard approved (2.4GHz – 1Mbps) 1998: UNII (Unlicensed National Information Infrastructure) Band - 5 GHz 1999: IEEE standard achieved ISO/IEC approval 1999: IEEE a (5GHz – 54Mbps) - approved IEEE b (2.4GHz- 11Mbps)- approved 1999: Formation of WECA (now Wi-Fi Alliance) 2001: IEEE d Regulatory Domains - approved 2003: IEEE g (Higher rate 2.4GHz PHY) – approved IEEE i (Security) - approved IEEE h (Spectrum Mgmt) - approved IEEE f (interaccess point protocol) – approved 2005: IEEE e (MAC enhancements – QoS) – approved

10 Page 10Version 1.0 IEEE 802 March 2011 workshop EEE 802

11 Page 11Version 1.0 IEEE 802 March 2011 workshop EEE 802 Market Size and Trends 9-Feb-1411 –Market size & segment diversity continues to increase 1 million Units per day Devices (million) Enterprise APs Home/SOHO CE Phones PCs Source: In-Stat million Units per day

12 Page 12Version 1.0 IEEE 802 March 2011 workshop EEE 802 Wi-Fi Alliance Founded member companies The Wi-Fi Alliance provides: Interoperability certification programs –Over 9000 products certified Market messaging

13 Page 13Version 1.0 IEEE 802 March 2011 workshop EEE 802 Wi-Fi Hotspot Public Access 517,242 hot spots in 144 countries Source: JiWire hotspot-locations.htm hotspot-locations.htm 87% of US hotels offer Wi-Fi Source: American Hotel & Lodging Assn

14 Page 14Version 1.0 IEEE 802 March 2011 workshop EEE 802

15 Page 15Version 1.0 IEEE 802 March 2011 workshop EEE 802 Air is a Poor Substitute for Wire or Fiber Large Scale fading –Attenuation (distance, obstructions) –Delay Small scale fading –Multipath (Reflections) –Doppler –Frequency selective fading Regulated & Shared –Regulatory considerations –by region –Interference 9-Feb-1415

16 Page 16Version 1.0 IEEE 802 March 2011 workshop EEE 802 Wireless Constraints Shannon-Hartley C = BW x log 2 1+S N BW= channel bandwidth (Hz) S = Signal N = Noise watts (not dB) C= channel capacity (bits/sec) Friis path loss G tx G rx c 2 (4 d) 2 f c 2 P rx N f P tx = 1 x

17 Page 17Version 1.0 IEEE 802 March 2011 workshop EEE 802

18 Page 18Version 1.0 IEEE 802 March 2011 workshop EEE 802 The 802 LAN Architecture Phy MAC LLC MAC RELAY LAN Physical Link Network Transport Session Presentation Application OSI reference model (Higher Layers) (Higher Layers) MAC Bridge End station MAC sublayer Medium Physical layer MAC service user MAC service provider LLC sublayer

19 Page 19Version 1.0 IEEE 802 March 2011 workshop EEE Project Scope

20 Page 20Version 1.0 IEEE 802 March 2011 workshop EEE 802 Basic Access Method - Protocol Behavior The family uses a MAC layer known as CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) Ethernet uses CSMA/CD - collision detection). Concept Listen on the channel. If the channel is quiet (no active transmitters) - send a packet. If channel is occupied- wait longer (exponential backoff) 20 micro sec for DS systems. If the channel is still idle at the end of the CONTENTION period the node transmits its packet otherwise it repeats the waiting process

21 Page 21Version 1.0 IEEE 802 March 2011 workshop EEE 802 Distributed Control Function Interframe Space DIFS DIFS = SIFS + (2 * Slot time)SIFS PHY OptionSlot time (µs)DIFS (µs) b a g9 or 2028 or 50

22 Page 22Version 1.0 IEEE 802 March 2011 workshop EEE 802 Basic Service Protocol - Listen Before Talk 1Mbps example DIFS (listen) 1500 Byte User DATA PPDU 1500 Byte User DATA PPDU SIFS ACK PPDU ACK PPDU 1500 Byte User DATA PPDU 1500 Byte User DATA PPDU SIFS ACK PPDU ACK PPDU DIFS (listen) 10 s 50 s 304 s s Listen Talk Listen Talk Listen Talk Listen Talk D = DCF Inter Frame Space (DIFS) S = Short Inter Frame Space (SIFS)

23 Page 23Version 1.0 IEEE 802 March 2011 workshop EEE 802

24 Page 24Version 1.0 IEEE 802 March 2011 workshop EEE 802 Technology Solutions PHY Bandwidth Modulation Multiple Streams, Multiple Antennas Forward Error coding MAC Media access efficiency Quality of Service Network measurement & Management Security 9-Feb-1424

25 Page 25Version 1.0 IEEE 802 March 2011 workshop EEE 802 Summary of Major PHY Projects A - 20 MHz BW, 5GHz B - 20 MHz BW, 2.4 GHz G - 20 & 40 MHz BW, 2.4 GHz N - 20 & 40 MHz BW, 2.4 & 5GHz AC – 20 to 160 MHz BW, 5GHz AD – 2 GHz BW, 60 GHz AF – TV White Space Spectrum AH – Unlicensed spectrum below 1 Gz

26 Page 26Version 1.0 IEEE 802 March 2011 workshop EEE 802 PHY Project Sequence 100 Kbps 1 Mbps 10 Mbps 100 Mbps 1 Gbps 10 Gbps 100 Gbps Original a b g n ad ac 10 year yardstick milestones milestones

27 Page 27Version 1.0 IEEE 802 March 2011 workshop EEE Architecture Overview Multiple Over the Air PHY options One common MAC MAC bgnac ada af ah

28 Page 28Version 1.0 IEEE 802 March 2011 workshop EEE 802 Summary of Major MAC Projects D – Country information E - QoS F – Inter AP communication H – DFS,TPC Spectrum sharing with radars in 5GHz J – Japan 4.9 GHz K – Radio Measurement P – Vehicular Environments R – Fast roaming S – MESH Networking U – Inter-Networking V – Network Management W – Secure Management Frames Z – Tunneled Direct Link AA – Video Transport AE – QoS for Management Frames AI – Fast Initial Link Setup

29 Page 29Version 1.0 IEEE 802 March 2011 workshop EEE 802 Overview of Project Objectives PHY (.11, a, b, g, j, n, p, y, ac, ad, af, ah) Change data rate options Change spectrum MAC Security (i, w) Measurement and Management (k, v) Flow control and QoS (e, aa, ae) Time required to establish connection (p, r, ai) Spectral Efficiency Regulatory behavior (d, h) Radio node connection topology (s, z) Connection with other networks (u)

30 Page 30Version 1.0 IEEE 802 March 2011 workshop EEE 802 IEEE Standards Pipeline PHY Sponsor Ballot MAC Study groups k RRM r Fast Roam b (99) 11 Mbps 2.4GHz Published Standard a 54 Mbps 5GHz g 54 Mbps 2.4GHz e QoS i Security f Inter AP h DFS & TPC V Network Management s Mesh u WIEN Y Contention Based Protocol WG Letter Ballot aa Video Transport ac VHT 5GHz ad VHT 60GHz TG without draft Discussion Topics Published Amendment ae QoS Mgmt Frm n High Throughput (>100 Mbps) W Management Frame Security z TDLS p WAVE af TVWS Smart Grid ai FILS ah mb Revision

31 Page 31Version 1.0 IEEE 802 March 2011 workshop EEE 802

32 Page 32Version 1.0 IEEE 802 March 2011 workshop EEE 802 Standard Revision Process pages Amendments a b d e pages g h i j

33 Page 33Version 1.0 IEEE 802 March 2011 workshop EEE 802 Standard Revision Process - underway pages Amendments k (223 p) n (560 p) D11.0 p ( 45 p) D11.0 r (116 p) y ( 84 p) D11.0 w (114 p) D10.0 v (428 p) D revision D pages

34 Page 34Version 1.0 IEEE 802 March 2011 workshop EEE 802 Standard Revision Process - underway revision D pages Amendments u (218 p) D13.0 s (361 p) D ~3000 pages

35 Page 35Version 1.0 IEEE 802 March 2011 workshop EEE 802 Standard Revision Process ~3000 pages Amendments aa (126 p) D3.0 ac (193 p) D0.1 ad (406 p) D1.1 ae ( 49 p) D2.0 af ( 159 p) D1.0 ah ( ??? p) D1.0 ai ( ??? p) D Publication ~ 4000

36 Page 36Version 1.0 IEEE 802 March 2011 workshop EEE 802

37 Page 37Version 1.0 IEEE 802 March 2011 workshop EEE 802 Unlicensed Frequency Bands <700 MHz 900 MHz 2.4 GHz 5 Ghz 60 GHz

38 Page 38Version 1.0 IEEE 802 March 2011 workshop EEE 802 Spectrum for current PHY Amendments 2 GHz 3 GHz 4 GHz 5 GHz 6 GHz b a gn n j y Calendar Time

39 Page 39Version 1.0 IEEE 802 March 2011 workshop EEE 802 Spectrum – Forward Looking 1 GHz 10 GHz 100 GHz b a gn n j y ad ah.1 GHz

40 Page 40Version 1.0 IEEE 802 March 2011 workshop EEE 802

41 Page 41Version 1.0 IEEE 802 March 2011 workshop EEE 802 PHY Sponsor Ballot MAC Study groups k RRM r Fast Roam b (99) 11 Mbps 2.4GHz Published Standard a 54 Mbps 5GHz g 54 Mbps 2.4GHz e QoS i Security f Inter AP h DFS & TPC V Network Management s Mesh u WIEN Y Contention Based Protocol WG Letter Ballot aa Video Transport ac VHT 5GHz ad VHT 60GHz TG without draft Discussion Topics Published Amendment ae QoS Mgmt Frm n High Throughput (>100 Mbps) W Management Frame Security z TDLS p WAVE af TVWS Smart Grid ai FILS ah mb Revision Further Details Follow

42 Page 42Version 1.0 IEEE 802 March 2011 workshop EEE n - High Throughput Overall project goals Much higher data rates –20 & 40 MHz channel band widths –1 to 4 spatial streams 1 stream for Client (Mandatory) 2 stream for Access Point (Mandatory) –½ Guard Interval –56 tones (in 20MHz) –5/6 coding –Green Field preamble –Block aggregation –Maximum PHY throughput of 600Mbps Better Range –Beam Steering Status: Published 2009

43 Page 43Version 1.0 IEEE 802 March 2011 workshop EEE 802 TGn Throughput

44 Page 44Version 1.0 IEEE 802 March 2011 workshop EEE P Wireless Access in Vehicular Environments (WAVE) Defines enhancements to support data exchange between high-speed vehicles and between these vehicles and the roadside infrastructure in the licensed ITS band of 5.9 GHz. Applications planned within the ITS domain (ITS services), including: –collision avoidance –traveller information –toll collection –commercial vehicle operations –transit operations –traffic management –connecting the vehicle to the Internet. Status: Published 2010

45 Page 45Version 1.0 IEEE 802 March 2011 workshop EEE s MESH An amendment to create a Wireless Distribution System with automatic topology learning and dynamic wireless path configuration. –Target number of packet forwarding nodes: ~32 –Support unicast and broadcast/multicast traffic –Use i security or an extension thereof –Extensible routing to allow for alternative forwarding path selection metrics and/or protocols –Use the four-address frame format or an extension –Interface with higher layers and connect with other networks using higher layer protocols Status: Produced draft 4.0 – preparing to go to Sponsor Ballot –Publication expected fall 2011

46 Page 46Version 1.0 IEEE 802 March 2011 workshop EEE 802 Classic Wireless LAN = radio link BSS = Basic Service Set AP STA Wired Infrastructure ESS = Extended Service Set SSID AP Wireless Paradox: WLAN Access Points are Typically Wired

47 Page 47Version 1.0 IEEE 802 March 2011 workshop EEE 802 Unwire the WLAN with Mesh Mesh AP STA Wired Infrastructure = mesh radio link ESS = Extended Service Set SSID Mesh AP Mesh Point Mesh AP Mesh AP

48 Page 48Version 1.0 IEEE 802 March 2011 workshop EEE 802 MESH Tutorial Title: IEEE MESH Date: Monday 14 March 2011 Time: 19:30-21:00 Location: Marina Bay Sands, Sands Ballroom Registration fee: None

49 Page 49Version 1.0 IEEE 802 March 2011 workshop EEE 802 Tgu – Wireless Interworking Background As IEEE hotspot deployment has become more widespread throughout the world. The growth of hotspots has resulted in more users becoming frustrated with the non uniformity of interworking systems (e.g. poor service definition, disparate registration procedures, non-ubiquitous roaming). Generically these issues have been referred to as interworking, which refers to the functionality and interface between an IEEE access network and any external network.

50 Page 50Version 1.0 IEEE 802 March 2011 workshop EEE 802 Tgu – Wireless Interworking Objectives The primary objective of IEEE u, is to create an amendment to address interworking issues between an IEEE access network and any external network to which it is connected. Interworking, is actually a collection of different functionalities: –Online Enrolment –Network Selection –Security –Authorization from Subscriber Network –Media Independent Handover Support Status: Last Draft balloted was D 13.0 – Published Feb 2011

51 Page 51Version 1.0 IEEE 802 March 2011 workshop EEE V Network Management Explosive growth of wireless LANs emphasized the need to Maintain network quality and security Manage the RF environment –largely driven by interference from neighbouring wireless networks Secure the network to maintain privacy and prevent unauthorized use. Optimize the Network –improve the ability to shape the network Status: Last Draft balloted was D 16.0 – Published Feb 2011

52 Page 52Version 1.0 IEEE 802 March 2011 workshop EEE 802 TGv Content – Increased Station Power Saving Traffic Filtering Service Enables the AP to filter traffic for the station, and deliver only frames of a specified type. WNM-Sleep Mode Provides an additional, extended power save mode. When used with the Traffic Filtering Service, can provide significant station power savings, and provide a Wake on WLAN service. Flexible Broadcast/Multicast service Enables multicast frames to be sent at longer delivery intervals and higher data rates, improving performance of multicast applications, and reducing station awake time Proxy ARP Enables stations to remain in power save mode longer TIM Broadcast – Enables stations to check for queued traffic without receiving a full Beacon frame.

53 Page 53Version 1.0 IEEE 802 March 2011 workshop EEE 802 Example TGv Based Applications Wake on WLAN Service– Stations sleep and are awakened when specific frames are received –Example application: User leaves corporate desktop in sleep mode, goes home, uses VPN from home to corporate LAN, wakes up and uses desktop remotely –Reduces power consumption of end devices, even stationary ones Improved client power saving Proxy ARP, TIM Broadcast, FBMS, Sleep Mode, Traffic Filtering Wireless Speakers – Use Location services timing measurements to support audio synchronization Improved Multicast Performance Network Diagnostic Analysis/Troubleshooting Co-located Interference Reporting, Diagnostic Reporting, Event Reporting, Multicast Diagnostics Reporting

54 Page 54Version 1.0 IEEE 802 March 2011 workshop EEE w – Protected Management Frames One of the frame types defined in is Action sub-type Management Management frames were previously less well protected than data frames. The objective of this was to improve the security by providing data confidentiality of action management frames, deauthentication and disassociation frames This standard protects networks from attack by malicious systems that forge disassociation requests that appear to be sent by valid equipment Status: Last Draft balloted was D 10.0 – Published 2009

55 Page 55Version 1.0 IEEE 802 March 2011 workshop EEE z Tunneled Direct Link The purposes of this amendment are to create a new DLS mechanism which: a) Does not require access point upgrades (i.e. supports DLS operation with the non-DLS capable access points), b) Which supports power save mode (when associated with either DLS or non-DLS capable access points), and c) Continues to allow operation of DLS in the presence of existing DLS capable access points Status: Last Draft balloted was D 13.0 – Published 2010

56 Page 56Version 1.0 IEEE 802 March 2011 workshop EEE 802 P802.11z example Access Point maintains control over network connection air times However, device pairs can optimize their conversation and use modes not supported by the access point

57 Page 57Version 1.0 IEEE 802 March 2011 workshop EEE AA Video Transport Stream Provides a set of enhancements to MAC to significantly improve video streaming performance while maintaining data and voice performance by improving Multicast/Broadcast video streams for link reliability with low delay and jitter. Enhancements to the MAC for robust video streaming offer: –Interworking with relevant mechanisms including, but not limited to, 802.1Qat, 802.1Qav and 802.1AS –Graceful degradation of video streams when there is insufficient channel capacity. –Increasing robustness in overlapping BSS environments, without the requirement for a centralised management entity. Modifying EDCA timing and parameter selection for video transport Status: Just completed WG balloting of draft 3.0 – preparing to go to Sponsor Ballot

58 Page 58Version 1.0 IEEE 802 March 2011 workshop EEE AC Very High Throughput <6GHz Goal: A multi-user BSS peak aggregated throughput of at least 1Gbps as measured at the MAC data service access point (SAP) [new term MU-MIMO, multi-user MIMO] Robust and flexible bandwidth management: native support for simultaneous multiple bandwidth operation (within a given frequency band) Add optional outdoor compatible delay spread resistance Below 6GHz carrier frequency operation excluding 2.4GHz operation and ensuring backward compatibility with legacy IEEE802.11a/n devices in the 5GHz unlicensed band. Status: 0.1 draft out for review – planning to begin balloting on D1.0 in March 2011

59 Page 59Version 1.0 IEEE 802 March 2011 workshop EEE AC Very High Throughput <6GHz 5 GHz PHY 20, 40, 80, 160 MHz & channel bandwidth Up to 8 spatial streams Up to 4 simultaneous users per transmitter Modulation options: BPSK, QPSK, 16 QAM, 64 QAM, 256 QAM Code rates: ½, 2/3, ¾, 5/6 280 Data rates from 6.5Mbps [1SS, ½ rate, 20MHz, BPSK, 800ns GI] to Mbps [8SS, 5/6 rate, 160MHz, 256QAM, 400ns GI]

60 Page 60Version 1.0 IEEE 802 March 2011 workshop EEE AD Very High Throughput Market drivers for Very High Throughput wireless LAN, include: –Never ending quest for higher performance computing drives higher processing power. –Media appliances are moving to HD content, driving 10X storage capacity and bandwidth requirements. Mainstream Wired LAN products have shifted to Gigabit per second speeds. The trend for a purely wireless campus drives the need for wired equivalent multi-Gigabit per second wireless solutions. Aggregate capacity increase using reduced cell sizes. Status: Completed preparation of draft 1.0 – balloted in WG October Preparing comment resolutions for next draft revision and ballot.

61 Page 61Version 1.0 IEEE 802 March 2011 workshop EEE AD Very High Throughput 60 GHz PHY 1.88 GHz channel bandwidth 3 channels available in US, Europe, Japan Transmit power limits: US: 40 dBm Europe: 57 dBm Japan: 10dBm Modulation options: SQPSK, QPSK, 16 QAM, 64 QAM Code rates: ½, 5/8, ¾, 13/16 Data rates from 693 to Mbps

62 Page 62Version 1.0 IEEE 802 March 2011 workshop EEE ae QoS for Management Frames This project will consider the classification and prioritization of management frames All IEEE MAC management frames are transmitted at the highest priority. Previous amendments k, y, w, v, and u have introduced features that rely on management frames, which are essential for network operation. In some cases, the management traffic will contend with network data traffic and reduce the performance of certain WLAN applications. Providing a mechanism to prioritize management frames will enable improved performance of IEEE networks This project will consider management frames that are used in both pre- and post- association. Management frames of subtype Action will be considered. Other management frame types may be considered. Status: Just completed ballot on 2 nd draft.

63 Page 63Version 1.0 IEEE 802 March 2011 workshop EEE af - Operation in the TV White Spaces This project will make the necessary MAC and PHY changes to enable products to take advantage of this additional spectrum available due to the global transition to Digital TV (DTV) and lightly used sub- Gigahertz RF spectrum now becoming available, much of it for unlicensed, license exempt and/or lightly licensed use. Example, On November 4, 2008, the United States FCC approved Report & Order , allowing unlicensed use of TV band spectrum, in accordance with Part 15. Subpart H of FCC rules. Ofcom (UK) is in the process of making this Digital Dividend band available, and the EU has conducted a consultation on the band. Other regulatory domains are expected to follow. Status: Produced draft 1.0 – just completed first ballot in February 2011

64 Page 64Version 1.0 IEEE 802 March 2011 workshop EEE 802 TGah – Sub 1 GHz Project proposes to use spectrum below 1 GHz. Lower frequency will increase range Channel bandwidths have typically been 20 MHz or more, lower channel bandwidth will be required. Status: New Task group November 2011– working on Use Cases and will begin to develop first draft

65 Page 65Version 1.0 IEEE 802 March 2011 workshop EEE 802 TG ai (FILS) Fast Initial Link Setup goal is to reduce initial association time to allow fast connection and data transfer in situations where users are very dense and highly mobile. Goal definition: Build a secure, fast initial authentication that a) is suitable for users experiencing a small dwell time in a cell (due to high mobility or small cell sizes users) b) scales for large number of simultaneously occurring initial authentications Status: New Task Group January 2011– describing Use Cases – will begin to develop first draft

66 Page 66Version 1.0 IEEE 802 March 2011 workshop EEE 802 Future Projects Security Low power consumption Longer range Spectral efficiency Dynamic Spectrum Sharing Geolocation

67 Page 67Version 1.0 IEEE 802 March 2011 workshop EEE Links References Home page for Documents https://mentor.ieee.org/802.11/documents Timelines & Project History Engineering articles: Search 2,879,214 documents Search for returns 6382 hits Get 802

68 Page 68Version 1.0 IEEE 802 March 2011 workshop EEE 802 Articles about IEEE Wireless Communications IEEE Network IEEE Communications Magazine IEEE Transactions on Wireless Communications IEEE Spectrum Proceedings of the IEEE IEEE Transactions on Mobile Computing

69 Page 69Version 1.0 IEEE 802 March 2011 workshop EEE 802 Recently Published Papers re Selfishness in Mesh Networks MAC Layer Misbehavior in Wireless Networks: Challenges and Solutions Designing VoIP Session Management over Interworked WLAN-3G Networks The need for Access Point Power Saving in Solar Powered WLAN MESH Networks Interworking of WLAN-UMTS Networks A Scalable Monitoring System for Wireless Networks Toward Dependable Networking: Secure Location and Privacy at the Link Layer Handover Management in Integrated WLAN and Mobile WiMAX Networks Minimum Interference Channel Assignment in Multiradio Mesh Networks An Equal-Spacing-Based Design for QoS Guarantee in e HCCA Wireless Networks New MAC Scheme Supporting Voice/Data Traffic in Wireless Ad Hoc Networks Improving Security of Real-Time Wireless Networks Through Packet Scheduling A Cross-Layer Approach for Per-Station Fairness in TCP over WLANs Revisiting the Hidden terminal Problem in a CSMA/CA Wireless Network

70 Page 70Version 1.0 IEEE 802 March 2011 workshop EEE 802 The IEEE Shop

71 Page 71Version 1.0 IEEE 802 March 2011 workshop EEE 802 Get 802 – examples IEEE : WIRELESS LOCAL AREA NETWORKS (LANs) IEEE IEEE IEEE Standard for Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications An interpretation is available.interpretation IEEE k-2008IEEE k-2008 IEEE Standard for Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 11: Wireless LAN Medium Access Control (MAC)and Physical Layer (PHY) Specifications Amendment 1: Radio Resource Measurement of Wireless LANs IEEE n-2009IEEE n-2009 IEEE Standard for Information technology-- Telecommunications and information exchange between systems--Local and metropolitan area networks--Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 5: Enhancements for Higher Throughput


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