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SidevõrgudIRT 4060/ IRT 0020

vooruloeng 4 / 6. okt 2004

Avo Otstelekommunikatsiooni õppetool,

TTÜ raadio- ja sidetehnika inst.avo.ots@ttu.ee

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Koduvõrgu ühendus

AccessNetwork

NT

koduvõrk

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SMEs LABs

WLAN access network

Authentication management

Local Authentication

RADIUS PROXY

CSP RADIUS

Environment Park RADIUS

Authentication

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Võrkudevaheline ühendusSoft phone

Rakendusserverid

Voice + Data over the LAN

IP LineCard

IPNetwork

InternetGateway

circuit switched

IP routed

USB

ISDN

PRIBRI

Juurdepääsu viisid võrkuTerminaal 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

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STM 1 155 Mb/s

VCI-100VCI-101

VCI-100VCI-101

VPI-10, 50 Mb/s

VPI-20, 60 Mb/s

Virtuaalsed teed ja kanalid (VPI, VCI)

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WCDMA kanalid

BaseStation

(BS)

UserEquipment

(UE)

P-CCPCH- Primary Common Control Physical ChannelSCH - Sync Channel

P-CPICH - Primary Common Pilot ChannelS-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

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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

Layer 1

Air InterfaceDirect 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

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Vastastikused häired

Interference Margin (dB) and Load Factor

0

5

10

15

20

25

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Load Factor

Inte

rfer

ence

Mar

gin

(d

B)

10

Side loomine (connection establishment)

BA

Nõudlus

Vastus (kinnitus)

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Kvaliteet

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Network structure (TUT)

TUT corenetwork

TUT corenetwork

Tietotalo”intra”

networks

Tietotalo”intra”

networks

Internet

Internet

Tietotalopublic access

network

Tietotalopublic access

network

Main housepublic access

network

Main housepublic 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

accesscontroller

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Network elements (TUT)

TUT corenetwork

TUT corenetworkInternetInternet

combined department

employee/publicaccess zone

combined department

employee/publicaccess zone

publicaccess zone

e.g lecture hall

publicaccess zone

e.g lecture hall

publicaccess zone e.g. teamwork room

publicaccess zone e.g. teamwork room

IPSEC/VPN securedaccess to department”intranet”

department x

”intranet”

department x

”intranet”

Nonencrypted filtered access to Internet

Access Controllers

department y”intranet”

department y”intranet”

VPNterminator

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Hierarhia+ 49 89 1234567