Sidev

1
SidevõrgudIRT 4060/ IRT 0020 vooruloeng 4 / 6.
okt 2004

• Avo Otstelekommunikatsiooni õppetool,
• TTÜ raadio- ja sidetehnika inst.avo.ots_at_ttu.ee

2
Koduvõrgu ühendus
3
Authentication
Authentication management
RADIUS PROXY
Local Authentication
Environment Park RADIUS
CSP RADIUS
SMEs
LABs
4
Võrkudevaheline ühendus
circuit switched
Soft phone
IP routed
USB
Internet Gateway
IP Line Card
IP Network
Rakendusserverid
Voice Data over the LAN
PRI BRI
ISDN
5
Juurdepääsu viisid võrku
Raadioühendus
Teenused
Terminaal
Võrk
60 GHz
ATM
speech
40 GHz
Phone
17 GHz
Internet
video
5 GHz
Intranet
QoS data
PDA
WLAN
best-effort data
..
laptop
WLL
Satellite
6
Virtuaalsed teed ja kanalid (VPI, VCI)
7
WCDMA kanalid
8
UTRAN OSI Model
Radio Resource Control (RRC)
Layer

3
Logical channels - grouped by information
content - User Data - Control
and signaling
Layer

2
Medium Access Control (MAC)
Transport channels - grouped by method of
transport
Physical layer
Layer

1
Physical channels Physical Channels
Distinguished by - RF Frequency
- Channelization Code - Spreading Code
- Modulation (I/Q) Phase (uplink) -
Timeslot (TDD mode)
Direct RRC control of the physical layer
Air Interface
9
Vastastikused häired
10
Side loomine (connection establishment)
Nõudlus
B
Vastus (kinnitus)
11
Kvaliteet
12
Network structure (TUT)

• 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

Internet
Main house intra networks
TUT core network
Main house public access network
Tietotalo public access network
Tietotalo intra networks
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Network elements (TUT)
TUT core network
Internet
department x intranet
department y intranet
VPN terminator
Access Controllers
IPSEC/VPN secured access to department intranet
combined department employee/public access zone
Nonencrypted filtered access to Internet
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