iex8175 rf electronics

1

IEX8175 RF Electronics

Avo Otstelekommunikatsiooni õppetool,

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

2

Mobility

Wireless Broadband Mobile Broadband

3

4

Architectural Layout

Multi-service User Terminal (MUT)

Basic Access Network cells

Com

mon

Cor

e

Net

wor

k P

lane

Internet

IP backbone

Managed IP Network

Servic

e Net

work

Plane

RANs

B

asic A

ccess

Netw

ork

Plane

5

Link Layer Mobility

• Handover is taken care of by the involved BSs (and BSS) of the RAN

• Applicable only to the same RAN

• Within IP sub-network

• Transparent to the network layer– Care-of-Address is retained

– No registration activity involved

• BAN signaling not necessary

BS

BS

BS

BS

BS

BS

BS

BSS

IP Subnet: 160.243.x.x

6

Micro and Macro Mobility in IP

BS

BS

BS

BS

BS

BS

BS

BSS

BS

BS

BS

BS

BS

BS

BS

BSS

BS

BS

BS

BS

BS

BS

BS

BSS

BS

BS

BS

BS

BS

BS

BS

BSS

IP Subnet: 160.241.x.x

IP Subnet: 160.242.x.x IP Subnet:

160.243.x.x

IP Subnet: 160.244.x.x

IP C

ore

RA

N

Roo

t CC

N/In

tern

et

Macro Domain/Region

Micro Domain

Subnets

7

IEEE 802.11 standards

802.11sESS Mesh

QoS and RRM

Mobility and Inter-working

802.11802.11a/b/g/h/e/i

Network Architecture

802.11AP Functional

Description802.11k

Radio ResourceMeasurements

802.11rFast BSSTransition

802.11 WNMRadio ResourceManagement

802.11 WIENInterworking withExternal Networks

802.21Media-Independent

Handover

Released standards

Standards in progressRecently started

Being defined

Legend:

8

WiMAX Network Models

Fixed Outdoor

Backhaul

Wi-Fi Hotspot

Fixed 2005 Portable 2006 Mobile 2007/8+

Metrozone

Nomadic

Fixed Indoor

Mobile

9

Fixed/Nomadic WiMAX•

10 – 20 Km

• Geography: Typical in suburban and rural areas

• Deployment pattern: Large-sized cells with maximum area coverage

• Services: Traditional Wireless DSL data + voice

• CPE types:Mix of outdoor and indoor CPEs

11

Linkshttp://www.sa.ee/

http://www.wimaxforum.org/home/

www.ieee802.org/16/http://usa.wimaxworld.com/

http://en.wikipedia.org/wiki/802.11k

http://www.networkworld.com/news/tech/2005/082205techupdate.html

http://www.connect802.com/encyclopedia/enc-numbers.htm