30 Sidevõrgud IRT 4060/ IRT 0020 vooruloeng 4 / 6. okt 2004 Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst.

31 Koduvõrgu ühendus Access Network NT koduvõrk

32 SMEsLABs WLAN access network Authentication management Local Authentication RADIUS PROXY CSP RADIUS Environment Park RADIUS Authentication

33 Võrkudevaheline ühendus Soft phone Rakendusserverid Voice + Data over the LAN IP Line Card IP Network Internet Gateway circuit switched IP routed USB ISDN PRI BRI

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

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

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

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

38 Vastastikused häired

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

40 Kvaliteet

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

42 Network elements (TUT) TUT core network TUT core network Internet combined department employee/public access zone combined department employee/public access zone public access zone e.g lecture hall public access zone e.g lecture hall public access zone e.g. teamwork room public access zone e.g. teamwork room IPSEC/VPN secured access to department ”intranet” department x ”intranet” department x ”intranet” Nonencrypted filtered access to Internet Access Controllers department y ”intranet” department y ”intranet” VPN terminator

43 Hierarhia