Sidevrgud IRT 0020 loeng 3 25 sept 2005

Sidevõrgud IRT 0020 loeng 3 25. sept. 2005 Avo Ots telekommunikatsiooni õppetool raadio- ja sidetehnika instituut avots@lr. ttu. ee 1

Mudeli täiendused 7 Application e. g. Workflow 6 Presentation G. 711 / G. 723. 1 / G. 729 5 Session H. 323 / H. 450 / RTP 4 Transport TCP / UDP 3 Network IP Diff. Serv 2 Data Link MAC 802. 1 D 1 Physical Transmission Medium 2

Kihid 7 6 5 4 3 2 1 Rakendus Application Esitlus Presentation WAE, HTTP, RFC 821, 822 ISO 8859 -15 Session SSL, WSP Transport TCP RFC 793, UDP RFC 768 Võrk Network Seanss Kanal Füüsiline (ühendus) Data link Physical RFC 791 IP, RFC 792 ICMP IEEE 802. 11 a Cat 5, RS-232 D 3

Kvaliteet 4

Sidesüsteemi mõjutavad Fraud Internet Hacker VPN Interception Fraud Viruses 5

Kvaliteet IP-võrgu kaudu Harukontor Peakorter IP (LAN) Qo. S IP (WAN) Router 6

The Internet Every machine transparently connected to every other 7

The Problem • only nodes on the same physical/link layer network could communicate 8

Solution Gateways 9

Piirkonnad ja piirpinnad T T T GW SCN GW MCU GK GW T T 10

Juurdepääsu viisid võrku Terminaal Raadioühendus Võrk Teenused 60 GHz ATM speech 17 GHz Internet video 5 GHz Intranet Qo. S data ……. . best-effort data 40 GHz Phone PDA laptop WLAN WLL Satellite

Virtuaalsed teed ja kanalid (VPI, VCI) VPI-10, 50 Mb/s STM 1 155 Mb/s VCI-100 VCI-101 VPI-20, 60 Mb/s 12

WCDMA kanalid Channels broadcast to all UE in the cell P-CCPCH- Primary Common Control Physical Channel SCH - Sync Channel P-CPICH - Primary Common Pilot Channel S-CPICH - Secondary Common Pilot Channel(s) Paging Channels S-CCPCH - Secondary Common Control Physical Channel PICH - Page Indication Channel Random Access and Packet Access Channels Base Station PRACH - Physical Random Access Channel (BS) PCPCH - Common Physical Packet Channel AICH - Acquisition Indication Channel AP-AICH - Acquisition Preamble Indication Channel User Equipment (UE) CD/CA-AICH - Collision Detection Indication Channel CSICH - CPCH Status Indication Channel Dedicated Connection Channels DPDCH - Dedicated Physical Data Channel DPCCH - Dedicated Physical Control Channel F-PDSCH - Physical Downlink Shared Channel 13

Spectrum Usage Licensed Bands Unlicensed Band • 2. 5 GHz (2. 3 -2. 4; 2. 5 -2. 7) • 3. 5 GHz (3. 3 -3. 7) • 5. 8 GHz (5. 25 -5. 85) N. America 2. 5 & 5. 8 GHz W. & E. Europe 3. 5 & 5. 8 GHz APAC 3. 5 & 5. 8 GHz Middle East & Central & S. America Africa 2. 5, 3. 5 & 5. 8 GHz 14

UTRAN OSI Model Layer 3 Radio Resource Control (RRC) Logical channels Layer 2 Medium Access Control (MAC) - grouped by information content - User Data - Control and signaling Transport channels Layer 1 Physical layer - grouped by method of transport Physical channels Direct RRC control of the physical layer Air Interface Physical Channels Distinguished by: - RF Frequency - Channelization Code - Spreading Code - Modulation (I/Q) Phase (uplink) - Timeslot (TDD mode) 15

Vastastikused häired 16

Side loomine (connection establishment) Nõudlus A B Vastus (kinnitus) 17

Network structure (TUT) - public access networks (PAN) isolated from other networks in the edge routers access controller Internet - access from PAN to Internet controlled by access controllers - department ”intranets” may be protected with access control lists / filters in the edge routers Main house ”intra” networks TUT core network - VLANs are used to separate access controllers to own access controller segment - public access network is considered a hostile network like the Internet Main house public access network Tietotalo ”intra” networks Tietotalo public access network 18

ISO OSI vs Do. D mudel 7 6 5 4 3 2 1 Process/ Application Host-to-Host Internet Network Access 19

Võrkude ja teenuste ühendamine T T G T T R T T 20

Off-line customer management Extended call control and IN charging Terminal Telecom basic service/call control Access Service Transmission Access Service Linear Service Architecture in Legacy Network: Static Services A User Service Management A Home Service B User Service Management Control Service A Terminal A Portal B Portal Session Service Access Transmission Access Two-Dimension Service Architecture in NGN: Active Services B Terminal 21

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Protokollid http: //www. private. org. il/tcpip_rl. html http: //www. eix. co. uk/Ethernet/ http: //www. mfaforum. org/education/atm_pres entations. shtml http: //www. mfaforum. org/education/atm_cs. s html http: //www. mfaforum. org/tech/superdemo_20 04. pdf 23