Lecture notes for Wireless networks

wireless networking lecture notes slides and what is wireless networking in mobile computing and mobile wireless network system simulation pdf free download
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Published Date:14-07-2017
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192620010 Mobile & Wireless Networking Lecture 1 : Introduction & Wireless Transmission (1/2) Schiller, Section 1 & Section 2.1 - 2.5 Geert Heijenk Mobile and Wireless Networking 2013 / 2014 Outline of Lecture 1 q  Introduction q  About the course “Mobile & Wireless Networking” q  History q  Current Wireless Technologies q  Important trends q  Wireless Transmission (1/2) q  Frequencies q  Signals q  Antennas q  Signal Propagation q  Multiplexing 2 Mobile and Wireless Networking 2013 / 2014 Why Mobile and Wireless Networking? •  Largest SW/HW/networked system •  Largest number of subscribers •  Mobile devices dominate the Internet •  Mobile applications dominate Internet usage •  New possibilities, new threats •  Technology fully integrated into everybody's life almost 24/7, almost anywhere Mobile and Wireless Networking 2013 / 2014 Mobile & Wireless Networking q  Mobile q  user can use network services while moving l  w.r.t. point of attachment to network l  Usually user is moving with his/her networking device q  Wireless q  communications without using a wire l  directly between two user nodes, or l  (often) between user node and access point connected to the fixed (wired) network q  Networking q  roughly, all architectures, protocols, and algorithms at the l  link layer (mostly medium access control, MAC) l  network layer, and l  transport layer l  (we will briefly address physical layer as well) 4 Mobile and Wireless Networking 2013 / 2014 What is different in wireless networks? q  Higher loss-rates q  Restrictive spectrum regulations q  Lower transmission rates q  Higher delays, higher jitter q  Lower security q  Shared and unbound medium q  Mobility q  change of point of attachment to network q  how to find a user / device q  Limitations of access devices q  battery power 5 Mobile and Wireless Networking 2013 / 2014 Course Outline (Mobile & Wireless Networking, M&WN) Basic principles: •  Physical layer: propagation, multiplexing, modulation, spread spectrum, OFDM •  MAC layer: hidden terminals, medium access, random access, CDMA, Hybrid ARQ •  Cellular concepts: cell layout, interference •  Dealing with mobility: handover, mobility management •  Transport layer: problems with TCP over wireless •  Ad-hoc networks: problems of ad-hoc routing Systems: •  Cellular: UMTS, LTE •  Wireless LAN: IEEE 802.11a/b/g/e/n/ac •  Low power / short range systems: Bluetooth, Zigbee •  Mobile IP: + Hierarchical Mobile IP, Fast Handovers for Mobile IP •  Ad-hoc routing: DSDV, DSR, AODV 6 Mobile and Wireless Networking 2013 / 2014 Positioning Mobile & Wireless Networking Module: Network Systems Mobile Mobile & & Wireless Wireless Networking (1) Networking (2) Telematica Systemen advanced: focus on link- and & ad-hoc network layer Toepassingen networks of m&w networks Telematica networking Netwerken overview Mobile Radio networking Communications in-depth focus on physical layer 7 Mobile and Wireless Networking 2013 / 2014 Course organization See: http://www.cs.utwente.nl/heijenk/mwn 8 Mobile and Wireless Networking 2013 / 2014 Outline of Lecture 1 q  Introduction q  About the course “Mobile & Wireless Networking” q  History q  Current Wireless Technologies q  Important trends q  Wireless Transmission (1/2) q  Frequencies q  Signals q  Antennas q  Signal Propagation q  Multiplexing 9 Mobile and Wireless Networking 2013 / 2014 History of wireless communication Many people in history used light for communication Discovery of electromagnetic waves q  1831 Faraday demonstrates electromagnetic induction q  1864 J. Maxwell theory of electromagnetic fields, wave equations q  1886 H. Hertz demonstration of the wave character of electrical transmission Hertz: "It's of no use whatsoever... this is just an experiment that proves Maestro Maxwell was right - we just have these mysterious electromagnetic waves that we cannot see with the naked eye. But they are there.” 1895 Guglielmo Marconi, first demonstration of wireless telegraphy (long wave) 1907 Commercial transatlantic connections 1915 Wireless voice transmission New York - San Francisco 1920 Marconi, discovery of short waves 1928 many TV broadcast trials (across Atlantic, color TV, TV news) 1933 Frequency modulation (E. H. Armstrong) 10 Mobile and Wireless Networking 2013 / 2014 History of wireless communication II 1956 First mobile phone system in Sweden 1972 B-Netz in Germany 1979 NMT at 450MHz (Scandinavian countries) 1982 Start of GSM-specification »  goal: pan-European digital mobile phone system with roaming 1992 Start of GSM 1997 Wireless LAN - IEEE802.11 1998 Specification of UMTS (Universal Mobile Telecommunication System) 1998 Iridium: portable satellite telephony 1999 IEEE Standard 802.11b, 2.4 GHz, 11 Mbit/s Bluetooth, 2.4 GHz, 1 Mbit/s 11 Mobile and Wireless Networking 2013 / 2014 History of wireless communication III 2001 Start of 3G (Japan) UMTS trials in Europe 2002 Start of UMTS in Europe IEEE 802.11g mobile subscribers overtake fixed-line subscribers worldwide 1 billion cellular subscribers 2004 UMTS launch in Netherlands 2007 Introduction of iPhone 2009 IEEE 802.11n standard (December) First LTE Network (Stockholm / Oslo) 2012 6 billion cellular subscribers 2013 LTE launch in Netherlands (KPN, February, Amsterdam) 12 Mobile and Wireless Networking 2013 / 2014 Current wireless technologies (1/2) q  Telecommunication Systems q  initial / primary service: mobile voice telephony q  large coverage per access point (100s of meters - 10s of kilometers) q  low - moderate data rate (10s of kbit/s – 10s of Mbits/s) q  Examples: GSM, UMTS, LTE q  WLAN q  initial service: wireless ethernet extension q  moderate coverage per access point (10s of meters - 100s of meters) q  moderate - high data rate (Mbits/s - 100s of Mbits/s) q  Examples: IEEE 802.11b, a, g, n, ac. q  Short-range q  Other systems 13 Mobile and Wireless Networking 2013 / 2014 Current wireless technologies (2/2) Short-range q  direct connection between devices ( 10s of meters) q  typical low power usage q  examples: Bluetooth, ZigBee Other systems q  Satellite systems l  global coverage, l  applications –  audio/TV broadcast; positioning –  personal communications q  Broadcast systems l  satellite/terrestrial l  DVB, DAB (Support of high speeds for mobiles) q  Fixed wireless access l  several technologies (DECT, WLAN, IEEE802.16 (11-60GHz)) q  DECT l  Digital Enhanced Cordless Telecommunication q  TETRA l  Terrestrial Trunked Radio l  Netherlands: C2000 system 14 Mobile and Wireless Networking 2013 / 2014 Standardization q  3GPP (3G partnership project) q  GSM q  UMTS q  LTE q  Specifications: http://www.3gpp.org/-specifications- q  IEEE (Institute of Electrical and Electronics Engineers) q  802.11 (Wireless LAN: WiFi) q  802.15 (Wireless PAN: Bluetooth, Zigbee) q  802.16 (Broadband Wireless Access: WiMAX)) q  Standards: http://standards.ieee.org/about/get/802/802.html q  IETF (Internet Engineering Task Force) q  Mobile IP q  TCP q  AODV q  Requests for Comments (RFCs): http://www.ietf.org/rfc.html 15 Mobile and Wireless Networking 2013 / 2014 Outline of Lecture 1 q  Introduction q  About the course “Mobile & Wireless Networking” q  History q  Current Wireless Technologies q  Important trends q  Wireless Transmission (1/2) q  Frequencies q  Signals q  Antennas q  Signal Propagation q  Multiplexing 16 Mobile and Wireless Networking 2013 / 2014 Mobile subscriptions Global  ICT  developments,  2001-­‐2011   100   Mobile-­‐cellular  telephone  subscrip=ons   90   Individuals  using  the  Internet   80   Fixed-­‐telephone  subscrip=ons   70   Ac=ve  mobile-­‐broadband  subscrip=ons   60   Fixed  (wired)-­‐broadband  subscrip=ons   50   40   30   20   10   0   2001   2002   2003   2004   2005   2006   2007   2008   2009   2010   2011   Source: ITU World Telecommunication /ICT Indicators database 17 Mobile and Wireless Networking 2013 / 2014 Per  100  inhabitants  "%&'(')""+')",-.,""/"0'%/)%.01&+%'20"323, "%&'()+,-(.+/0120"(3/(3(0/"2+/"04.20/01(52'' 3(6'7-''.'201.61-0)/(+1 8(6'7-''.'201.61-0)/(+19/(/2'2+%)0:;;+"26/2+/19;;=7;:?92+%60,(+9;:? Mobile-cellular subscriptions total and per 100 inhabitants T&'()+,D+3''(+1I :F; )& T&'()%D+3''(+1I :;; C;;; " :::: :; "& U(0'%DL0:;;+"26/2+/1I  % := F;;; :: :; S; & & ::; &' :;S =;;; C; () :;; && (&  '(  F; ;;; S; '& =; )(  E;;; ; F; )& E; ;;; ; "& ; :;;; ; & :; ; ; ; & ÒÒÒÒÒÒÒÒÒ  "%&'&()+, -"./0%&&123&4"/56&250"++.70,"78192&1760,"/)&6,,:,) "+.360(53(6'7-''.'201.61-0)/(+1A(0'%A%12))0(2-"+,/"+.360(5)()'(+20/"B8(6'7 18 Mobile and Wireless Networking -''.'201.61-0)/(+1A''02-"2'3(1/C6''(+6+%;:9-(001)(+%+,/(2)+/02/(+02/(5 B8(0 2013 / 2014 /"2+"2'5(5/"1DEBF6''(+ACIµCÒREGIONÒÒÒSUBSCRIPTIONS ÒWILLÒBEÒINÒTHEÒSIA 0 G+%&'()+,-(.+/0193(6'7-''.'20)+/02/(+A''02-"Ò 6+%;:9-(3)20%A/"::H+ %&'()%-(.+/01B 8(6'7-''.'20,0(A/"02/1"2&02-"%/"0'(A1/7&0'&'D(5BFH,'(62''I9+%-2/+,/"2//"320J/1 2))0(2-"+,12/.02/(+'&'1B"-(+/+.(.1+-021+3(6'7-''.'201.61-0)/(+113(1/'%./(,0(A/" +/"%&'()+,A(0'%K)+/02/(++%&'()+,-(.+/01-(+/+.1/(,0(A/A-213.-"21+%&'()% -(.+/01DEB:H-(3)20%A/":B=H901)-/&'9+;:IB FRICAÒANDÒSIAÒANDÒTHEÒACIµC Ò0WHEREÒPENETRATIONÒWILLÒHÒREAC 2+% 901)-/&'96+%;:920/" 0,(+1A/"/"1/0(+,1/3(6'7-''.'20,0(A/"D2+%/"'(A1/)+/02/(+02/1IBL+/02/(+02/1+/"MGN -(.+/019O026N/2/19/"O30-212+%P.0()"2&02-"%'&'126(&:;;HD1+-;:I2+%20Q)-/% ;::V;: ;:V;:E ;:EV;:? /(,0(A2/'11/"2+H+;:B N"20(53(6'7-''.'201.61-0)/(+196'&'(5%&'()3+/D;;;9;;=9;:?I H CSH ==H =H E=H F=H T&'()+, ;;= ;:? ;;; T&'()% B6''(+ ÒBILLION ÒMILLION  "%&'&()+, -"./0%&123&4"/56&250"++.70,"78192&1760,"/)&6,,:,) " %&'()+, -(.+/01R 1"20 -(+/+.1 /( +-021 2+% 6 +% ;:9 /" +.360 (5 3(6'7-''.'20 1.61-0)/(+1+/"%&'()+,A(0'%A''2(.+/5(0CSHD(03(0/"2+/"074.20/01I(5/"A(0'%R1/(/2'B 8''(+1 L0:;;+"26/2+/1 L0:;;+"26/2+/1 91- (./"; =5";6 /,:&-,) 2?&+/0,) 4"/56 =5";7 ),&A&B,0C0 C/0,Trends in computing 18 Mainframe (one computer, many people) 16 PC (one person, one computer) 14 Ubiquitous computing (one person, many computers) 12 A proliferation of small, low- cost, embedded devices 10 incorporating computing and 8 communication capabilities 6 4 Moving towards pervasive 2 computing Yr 0 Source: Presentation by Marc Weiser ”Nomadic issues in Ubiquitous computing”, Xerox, Palo Alto. Research Center, 1996. 19 Mobile and Wireless Networking 2013 / 2014 Sales/Yr 1940 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005Evolution of mobile cellular systems 4G 3G full IP based LTE - advanced 2G digital voice + data digital UMTS voice 1G GSM 900/1800 DECT analog voice NMT 1972 1992 2002 2012 2022 20 Mobile and Wireless Networking 2013 / 2014 Bitrate

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