4G-The Next Generation Wireless Networks

8/7/2019 4G-The Next Generation Wireless Networks

1/20

4G - The Next GenerationWireless1

4G The Next Generation WirelessNetwork

Cheng Cui & Zhiwei Li

Department of Software & Information System


2/20


Introduction

4G is an initialism of the term Fourth-Generation

Communications System. A 4G system will provide an end-to-end IP solution

where voice, data and streamed multimedia can beserved to users on an "Anytime, Anywhere" basis athigher data rates than previous generations.

No formal definition is set as to what 4G is, but theobjectives that are predicted for 4G can besummarized as follows:


3/20


Introduction - contd

4G will be a fully IP-based integrated system ofsystems and network of networks wired and wirelessnetworks (e.g.: computer, consumer electronics,communication technology)

Providing 100 Mbit/s and 1 Gbit/s, respectively, inoutdoor and indoor environments

End-to-end quality of service High security

Offering any kind of services anytime, anywhere

Affordable cost and one billing


4/20


The following are some possible features of the 4G systems :

Support interactive multimedia, voice, video, wireless internet andother broadband services.

High speed, high capacity and low cost per bit.

Global mobility, service portability, scalable mobile networks.

Seamless switching, variety of services based on Quality of Service(QoS) requirements

Better scheduling and call admission control techniques.

Ad hoc networks and multi-hop networks.



5/20




6/20


Pre-4G Wireless Standards

WiMAX - 7.2 million units by 2010 (May include fixed

and mobile) Flash-OFDM - 13 million subscribers in 2010 (only

Mobile)

3GPP Long Term Evolution of UMTS in 3GPP -valued at US$2 billion in 2010 (~30% of the worldpopulation)

UMB in 3GPP2

IEEE 802.20


7/20


Pre-4G Wireless Standards

Proprietarytechnologies

IEEE 802 Family

3GPP Family

WCDMA FDDWCDMA TDDTD-SCDMACDMA 1xEV-DO / DV

IPWireless TDDInterDigital TDD

FlarionNaviniNextNetArrayComm

Beamreach.

802.20

802.16e

802.16-2004 (WiMax)802.11b802.11a / g / n / s

AirGo

licensed spectrum

unlicensed spectrum

4G


8/20


Technology - parameters of3G Vs 4G

Attribute 3G 4G

Major Characteristic Predominantly voice- data as add-on Converged data and VoIP

Network Architecture Wide area Cell based Hybrid integration of Wireless Lan(WiFi), Blue Tooth, Wide Area

Frequency Band 1.6 - 2.5 GHz 2 8 GHz

Component DesignOptimized antenna; multi-bandadapters

Smart antennas; SW multi-band;wideband radios

Bandwidth 5 20 MHz 100+ MHz

Data Rate 385 Kbps - 2 Mbps 20 100 Mbps

Access WCDMA/CDMA2000 MC-CDMA or OFDM

Forward Error Correction Convolution code 1/2, 1/3; turbo Concatenated Coding

Switching Circuit/Packet Packet

Mobile top Speed 200 kmph 200 kmph

IP Multiple versions All IP (IPv6.0)

Operational ~2003 ~2010


9/20


Architecture


10/20


Architecture - contd


11/20


Challenges

4G definition A global consensus on the 4G definition is needed before the

standardization starts. Despite efforts there still are too many diverging approached to 4G.

Seamless connectivity Inter- and intra-network connectivity is fundamental to the

provision of temporally and spatially seamless services. Vertical and horizontal handovers are critical for 4G. In the former

case, the heterogeneity and variety of networks exacerbate the

problem. Latency

Many 4G services are delay sensitive. Guaranteeing short delays in networks with different access

architecture and coverage is far from straightforward.


12/20


Challenges - contd

Concealing complexity 4G networks would be undoubtedly complex, but this needs to be

hidden from the user. Spectrum issues

Spectrum for 4G will be allocated in 2007. It is difficult to design a wireless system without knowing the

channel, in particular if exploit multi-antenna technology.

Complex resource allocation

Management of time, frequency and spatial resources in a multi-network, multi-user environment is far from trivial.

Interference Multiple access interference control and mitigation in

heterogeneous environments (coexisting air interfaces, variedterminals and services) is an issue.


13/20


Challenges - contd

Power consumption By any measure, power consumption in future multi-function

multi-standard 4G terminals will sharply increase. Usability is seriously compromised, heat management

becomes an issue.

Cost Cost of infrastructure is key for the success of 4G. However,

new access architectures may require a large number ofaccess points.

Cost of terminal should be low enough to attract customers.

Services need to be attractively priced.


14/20


Development

A Japanese company has been testing a 4G communicationsystem prototype at 100 Mbit/s while moving, and 1 Gbit/s while

stationary. Recently reached 5 Gbit/s moving at 10 km/h, and isplanning on releasing the first commercial network in 2010.

An Irish company has announced that they have received amobile communications license from Irish Telecoms regulator.This service will be issued the mobile code 088 in Ireland and willbe used for the provision of 4G Mobile communications.

Sprint plans to launch 4G services in trial markets by the end of2007 with plans to deploy a network that reaches as many as 100million people in 2008


15/20


Conclusion


16/20


Sources on topic

Web Link Wikipedia t itle: 4G

http://en.wikipedia.org/wiki/4G

National Science Foundation

http://www.nsf.gov Groups working on 4G : WWRF , projects funded by NSF , Lucent , AT&T, Motorola, etc.

http://www.wireless-world-research.org/

4G Wireless Systemshttp://users.ece.gatech.edu/~jxie/4G

4G Wireless Standardhttp://www.nd.edu/~mhaenggi/NET/wireless/4G/

IEEE:http://www.ieee.org

IEEE Communications Society:http://www.comsoc.org/index.html

International Telecommunications Union:http://www.itu.org

Association of Computer Machinery:http://www.acm.org

European Telecommunications Standard Institue:http://ww.etsl.org

3Gpp partnership project:http://www.3gpp.org

Internet Engineering Task Force:http://www.ietf.orgB

Bluetooth official website:http://www.bluetooth.com

WAP forum:http://www.WAPForum.org


17/20


Sources on topic

Journals IEEE Explore: IEEE journals and conferences

http://www.ieee.org/ieeexplore

Ad Hoc Networks Journal

IEEE/ACM Transactions on Networking

IEEE Transactions on Mobile Computing

IEEE Transactions On Information Theory

IEEE Transactions on Wireless Communications

IEEE Communications Magazine

IEEE Network Magazine

IEEEJournal on Selected Areas in Communications (JSAC) Journal of Communications and Networks

Journal of High-Speed Networks

Mobile Computing and Communications Review


18/20


Sources on topic

Conferences/Workshops ACM SIGCOMM Special Interest Group on Data Communications

http://www.sigcomm.org/

IEEE ICC (International Conference on Communications)

IEEE INFOCOMhttp://www.ieee-infocom.org/

ACM SASN (ACM Workshop on Security of Ad Hoc and Sensor Networks )

ACM SIGMOBILE MOBICOM (International Conference on Mobile Computing and Networking)

ACM SIGMOBILE MOBIHOC(ACM International Symposium on Mobile Ad Hoc Networking and Computing)

Conference on Computer and Communications Security (CCS)

Conference on High Performance Networking and Computing (SC)


19/20


Sources on topic

Standards RFCs

http://www.rfc-editor.org/

Internet Draftshttp://www.ietf.org/

ITU-Thttp://www.itu.int/


20/20


Research papers in the area

Aurelian Bria, Maxime Flament, Fredrik Gessler, Olav Queseth, Rikard Stridh,

Matthias Unbehaun, Jiang Wu, Jens Zander. 4th Generation wireless infrastructures -

scenarios & research challenges. Special Edition IEEE Personal Communications,

Dec. 2001, 2001.

Savo Glisic andJuha-Pekka Mkel, University of Oulu, Finland. Advanced Wireless

Networks: 4G Technologies

Vinod Mirchandani, M. Rubaiyat Kibria, and Abbas Jamalipour, "An Open-System

4G/B3G Network Architecture", in the proceedings of IEEE International Conference

on Communications (ICC), vol. 2, pp. 1357-1361, Soul, South Korea, May, 2005.

Jihad Qaddour, Raffique A. C. Barbour, Evolution to 4G wireless: problems,

solutions, and challenges AICCSA 2005: 78 K.R. Santhi, G.S. Kumaran ,Migration to 4G: Mobile IP based Solution,

Telecommunications 2006.AICT-ICIW apos;06. International Conference on Internet

and Web Applications and services/Advanced International Conference on Volume ,

Issue , Date: 19-25 Feb. 2006, Pages: 76- 76.

Availabe at: http://webpages.uncc.edu/~zli19/4g.htm

4G-The Next Generation Wireless Networks

Documents

Transcript of 4G-The Next Generation Wireless Networks