Broadband Wireless Access (WLAN, WiMAX & ... &LTE)

Avo Ots avots@lr.ttu.ee

Sügise alguspäev aastal 2011

Tredeoff

Rate

Mobility

2G

3G

4G 802.11b WLAN

2G Cellular

Other Tradeoffs:

Rate vs. Coverage

Rate vs. Delay

Rate vs. Cost

Rate vs. Energy

802.11n

Wimax/3G

Kiirus vs bitikiirus

Tehnoloogiad

Hiina

Node B

• LTE Home Node Bs and its enhancements in Release 9

http://www.nomor.de/uploads/fc/lp/fclpAIhtNJQ9zwyD957atQ/2010-05_LTE_HomeNB_Rel9_Overview.pdf

Self-Organizing Networks (SON) http://www.nomor.de/home/technology/white-papers/self-organizing-networks-in-long-term-evolution

Femtocell vs Wi-Fi

http://gigaom.com/2009/11/02/who-needs-femtocells-if-we-have-wi-fi/

WiMAX

W LAN

http://www.wi-fi.org/

http://www.ieee802.org/11/Reports/802.11_Timelines.htm

http://www.wi-fi.org/Wi-Fi_Direct.php

http://www.wi-fi.org/files/11nbasics_glossary.pdf

802.11 areng

802.11 arengud http://en.wikipedia.org/wiki/DSRC

http://www.open80211s.org/trac

http://www.gigabeam.com/Home.aspx

http://www.whdi.org/Technology/

http://wirelessgigabitalliance.org/

Wi Fi kasutus

http://www.row44.com/

http://www.wi-fiplanet.com/news/article.php/3816556

http://en.wikipedia.org/wiki/Bluetooth

http://en.wikipedia.org/wiki/DASH7

Veel arendusi

http://www.smart-wi-fi.com/index.php

http://www.volga-forum.com/pdfs/VoLGA.pdf

http://www.wimaxforum.org/technology/downloads/WiMAX_and_IMT_2000.pdf

http://www.fcc.gov/14report.pdf

Muud allikad

http://wapedia.mobi/en/DASH7

http://www.nfc-forum.org/home/

http://en.wikipedia.org/wiki/Near_Field_Communication

http://www.wimedia.org/en/index.asp

ZigBee

http://www.zigbee.org/

http://en.wikipedia.org/wiki/ZigBee

http://en.wikipedia.org/wiki/ZigBee_specification

Veidi teooriat

http://www2.rohde-schwarz.com/file_10948/1MA111_2E.pdf

LTE vs WiMAX vs WiMAX2 Feature LTE R8 WiMAX R1

(16e)

WiMAX R2

(16m)

Interface DL: OFDMA

UL:SC-FDM

OFDMA OFDMA

Duplexing FDD, TDD TDD FDD, TDD

Mobility 350 km/hr 60-120 km/hr 350 km/hr

Channel Bandwidth

(MHz)

1.25, 1.6, 2.5, 5,

10, 15, 20

3.5, 5, 7, 8.75, 10 5, 10, 20, 40

Peak Datarate (Mbps) DL: 302 (4x4)

UL: 75 (2x4)

2x20 MHz (FDD)

DL: 46 (2x2)

UL: 4 (1x2)

10 MHz TDD 3:1

DL> 350 (4x4)

UL> 200 (2x4)

@20 MHz FDD

Spectral Efficiency

(bps/Hz)

DL: 1.91 (2x2)

UL: 0.72 (1x2)

DL: 1.91 (2x2)

UL: 0.84 (1x2)

DL > 2.6 (4x2)

UL > 1.3 (2x4)

Latency (ms) L2 < 5

Handover < 50

Link = 20

Handover 35-50

Link <10

Handover< 30

Nõuded sidekanalile

Voice Video Data

Delay

Packet Loss

BER

Data Rate

Traffic

<100ms - <100ms

<1% 0 <1%

10-3 10-6 10-6

8-32 Kbps 10-1000 Mbps 10-1000 Mbps

Continuous Bursty Continuous

Andmeliiklus

Videovoog

Videovoo häired

Nutitelefonid

Sagedusressurss (UMTS tarvis)

23

20 (35) MHz for TDD

2 * 60 MHz FDD (190 Mhz)

1850

1900

2000 2050 2100 2200 2250

20 20 60 30 15 30

DECT

MHz

GSM 1800

60

1920 2110

US Wireless : ARPU Trends

Lingid (lisaks)

http://www.nomor.de/