ELEC5509 Mbile Netwrks Edmund Tse 2010 ELEC5509 Mbile Netwrks General Lecturer Prfessr Abbas Jamalipur Rm 732, Bldg J03 abbas@ee.usyd.edu.au Tutrs Fazirulhisyam Hashim Rm 730, Bldg J03 fhisyam@ee.usyd.edu.au Curse web page http://www.ee.usyd.edu.au/~abbas/curses/e5509/ Username: E5509 Passwrd: mbinet2007 Assessment Tutrial attendance and reprt n weekly assignments (10%) Literature survey, reprt and presentatin (10%) 2-hur exam (75%) Text bk Jamalipur, The Wireless Mbile Internet: Prtcls, Architectures, and Services Table f Cntents General... 1 Intrductin t wireless and mbile Internet... 3 Wireless cellular data netwrks... 3 2G cellular data services... 3 Mre recent cellular data services... 4 Cellular mbile netwrks (GPRS, EGPRS, UMTS, cdma2000)... 6 EGPRS... 6 Standardisatin... 8 UMTS... 9 cdma2000... 10 Mbile netwrks f the future... 16 Beynd third generatin systems... 16 A quick verview t 4G... 17 AdaptNet... 18 Quality f service in a mbile envirnment... 19 Vice ver IP (VIP)... 22 Page 1 f 42
ELEC5509 Mbile Netwrks Edmund Tse 2010 Advantages and disadvantages... 22 General VIP architecture and verview... 22 Vice quality measurement methds... 23 Transprt prtcls... 24 Signalling prtcls... 25 Additinal VIP netwrk cmpnents... 27 Emergency services access in wireline and wireless netwrks... 27 Key methds fr mbile lcatin... 28 Wireless Internet security... 30 Basic security techniques... 30 Security in wireless internet... 31 Transprt prtcls fr mbile netwrks... 32 Sme wireless TCP slutins... 33 Simulatin envirnment... 33 Traffic mdelling and management... 35 Netwrk prtcls fr mbile netwrks... 38 Mbile IPv6... 39 Integrated Netwrks... 40 Page 2 f 42
ELEC5509 Mbile Netwrks Edmund Tse 2010 Intrductin t wireless and mbile Internet Defining mbile internet N single definitin, but cnsists f several ideas Lcatin-independent access Wire-free access Internet access Seamless access ISP-independent access Evlutin in telecmmunicatins technlgies Telephny wired, wireless, cellular Internet fixed, wireless, mbile An increase in: Number f services Time/space accessibility Number f applicatins Netwrk traffic vice, text, data Trends Fixed t mbile access fixed access fr vice service nearing saturatin Vice t data tday s internet users are ptentially future mbile internet users We see less and less time required t get the first 50 millin users Service tariff and device price Accessibility and ease f use, and number f applicatins available Future telecmmunicatin systems Supprt new and existing applicatins Hrizntal cmmunicatin between different access technlgy Cnnected thrugh a cmmn, flexible, seamless (IP-based?) cre netwrk Glbal raming and inter-wrking between different access technlgies with bth hrizntal (intrasystem) and vertical (inter-system) handver Wireless cellular data netwrks Mbile circuit vs packet switching Circuit switching Dedicates a channel t the data even when nt in use Lw system efficiency and lw data rates Gd real-time QS, and build n existing wireline CS netwrks Packet switching Mre suitable fr burst data traffic Higher system efficiency and higher data rates Needs change t existing CS cre netwrks Mre difficult in prviding real-time QS t multimedia applicatins 2G cellular data services Cellular digital packet data (CDPD) Peer multiprtcl, cnnectinless netwrk Shares unused channels in existing AMPS (later PCS) t prvide 19.2 kbps data Data transmissin fr mbile-mbile, mbile-fixed, fixed-mbile, fixed-fixed users Page 3 f 42
ELEC5509 Mbile Netwrks Edmund Tse 2010 EGPRS prtcl stack GPRS new tunnelling prtcl GTP tunnels PDUs thrugh the GPRS backbne netwrk between tw GSNs Header cntains tunnel end pint ID (pint-t-pint/multicast) r grup ID (pint-t-multipint) IPv4 is used belw GTP in GPRS backbne. Handles mbility, registratin and authenticatin Encapsulated packets with an uter GTP/UDP/IP header Adds 48 bytes in header, which is substantial fr VIP applicatins Standardisatin Evlutin frm 2G t 3G Standards rganisatins Internatinal Telecmmunicatin Unin (ITU) Eurpean Telecmmunicatins Standards Institute (ETSI) Third Generatin Partnership Prject (3GPP) ETSI, ANSI T1, ARIB Japan, Krea TTA, China WTS Wrking n 3G Based n evlved GSM cre netwrk Uses a system f parallel releases t meet demand fr new 3G specificatin features Third Generatin Partnership Prject 2 (3GPP2) ANSI Wrking n 3G based n IS-95 fr cdma2000 Internet Engineering Task Frce (IETF) Universal Mbile Telecmmunicatins System (UMTS) Frum Mbile Wireless Internet Frum (MWIF) Page 8 f 42
ELEC5509 Mbile Netwrks Edmund Tse 2010 May manage secure cmmunicatin t the HA r the mbile IP freign hme auth extensin Receive user prfile (differentiated services, security inf) frm AAA fr MS Recrd usage data, cmmunicate accunting inf frm PCF t AAA Rute packets t IP netwrk r reverse tunnel t HA Manage layer 2 cnnectin between PCF and PDSN Maintain PPP cnnectin Tag and prcess packets as necessary fr QS prfile AAA (in service prvider netwrk) Pass authrisatin requests between PDSN and hme IP netwrk Stre accunting fr MS frm the PDSN Fr mbile IP, may supprt handffs between PDSNs that d nt invlve hme IP net Fr mbile IP, dynamically identify a HA and assign a user t that HA AAA (in hme IP netwrk) Authenticate and authrise the MS based n requests frm lcal AAA Prvide user prfile and QS infrmatin t PDSN Fr mbile IP, dynamically identify a HA and assign a user t that HA AAA (in a brker netwrk) Frward requests and respnses between service prvider netwrk and hme IP netwrk withut direct assciatin Mdes f peratin Nn-transparent new requests created based n incming requests Transparent brker AAA nly relays Redirectin brker AAA refers service prvider t anther AAA Packet cntrl functin (PCF) Manage layer 2 cnnectin t PDSN Interact with PDSN t supprt drmant handff Buffer incming PDSN packets when radi resurces are unavailable Cmmunicates with RRC t manage radi resurces with MS Frward serving PCF inf t target PCF fr hard handff Radi resurces cntrl (RRC) Optinal: authenticatin and authrisatin f MS fr radi access; air interface encryptin Mange radi resurces fr cmmunicatin between MS and PCF Mnitr radi resurce status Bradcast packet zne ID in the system verhead message Mbile statin (MS) Manage data link prtcl t PDSN Request apprpriate radi resurces frm the netwrk Buffer packets frm applicatins when radi resurces are unavailable Detect change in packet zne, system r netwrk ID t initiate drmant handff with RRC Architectural mdels fr mbile IP MS access t SPN using air interface t cnnect t radi netwrk (RN) One service prvider at a time (hme r visited netwrk) Mbility management using air interface prcedures including interactin between VLR and HLR An pen R-P interface between RN and PDSN Interactin f PDSN t lcal and visited AAA and ther servers using IP Page 13 f 42