4G Mobile Networks - brahms.kaist.ac.krbrahms.kaist.ac.kr/professor/ftp/2nd_workshop/09-4GMobileNetwork_d... · • Fault tolerance/recovery to solve some of the problems associated

(c)Copyright Samsung Electronics CO. LTD, 2000, Samsung Electronics Proprietary 1

4G Mobile Networks

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> Overview

• 4G Mobile Networks

• Related Technologies

• Network Evolution

• All IP Networks


Overview

• Definetions of 4th Generation Mobile Networks

– What is 4G mobile Network?


Overview(Continued)

• Generations of Celluar Networks– 1st Generation(1G Mobile Networks)

• Analog Systems(AMPS, TACS, etc)

• No global standards

• CDPD(Cellular Digital Packet Data) supported for AMPS

– 2nd Generation(2G Mobile Networks)• Digital Systems

• Several standards published(TIA, ETSI)

• CDMA Systems(IS-95, IS-95A, IS-95B), USTDMA, GSM, PDC

• Current Major Systems

• GPRS(General Packet Radio Services) supported for GSM


Overview(continued)

• IMT-2000 Systems (3G Mobile Networks)– Mostly, wide-band CDMA based technologies in the air

interface

– High-speed packet data services over the air

– Wireless/Mobile Multimedia services

– High Speed provided over the air• 144 kbps(Vehicle)

• 384 kbps(pedestrian)

• 2Mbps(indoor)


Overview(continued)

• Cdma2000– Evolving from 2G CDMA systems

– Standardization Organization : 3GPP2

– Backward compatible to 2G CDMA systems

– 1x systems will be available this year

– 3x : MC(Multi-Carrier)

• UMTS– Wideband CDMA technologies

– Standard Organization : 3GPP

– Evolved from GSM(TDMA), but with new air interfaces

– DS(Direct Spreading)


Overview(continued)

• Limitation of 3G Networks– Maximum speeds in the air : 2Mbps

– Separate Core Networks• Voice Core Networks

• Data Core Networks

– Non-perfect global roaming supported

– ATM-based technologies used in networks

• 4G Mobile networks (Prospects)– Higher rate in the air than 2Mbps

– Integrated core networks will be supported for all theservices

– Global roaming supported

– Maybe IP-based technologies still used in networks


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• Overview

> 4G Mobile Networks

• Related Technologies


• All IP Networks


Activities for 4G Mobile Networks

• NSF’s Tetherless T3(U.S.A.)– T3 rate wireless communications(45Mbps)

• Europe’s ACTS(Advanced CommunicationTechnologies and Services)/FRAMES(Future RadiowidebAnd Multiple accEss Systems)

• Europe’s PCC(Personal Computing andCommunication)

• Japan’s Post IMT-2000 (NTT Docomo)

4G Mobile Networks


Drivers for 4G Mobile Networks

• Globalization of companies

• Globalization of products and services

• Communicating Appliances

• Services become independent of infrastructure

• Standardization diversification

• Education increasingly important

• Information trading

4G Mobile Networks(continued)


Service Attributes

• Paradigm change

• User friendly, integrated, personalized service

• Location Service

• Push Service

• 10,20,155 Mbps data service based on broadbandmultipath radio(5GHz band)

• IP based broadband cellular network service



Potential Applications

• Virtual navigation

• Telemedicine

• Infostation

• Telegeoprocessing applications

• Crisis management applications

• Education via the internet

• Mobile computer networks

• Computer- and network-aided remote collaboration

• Neighborhood access



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• Overview


> Core Technologies required


• All IP Network Architecture


Wireless Technologies

• Channel Models, Measurements, and Analysis

• Network Protocols Matched to Channels

• Fast Protocols/Algorithms for Temporally-Spatially Varying

Channels

• Multi-user system design and deployment for Capacity and QoS

• RF/Millimeter Frequency Design Tools and Fabrication

Techniques

• Antenna Design and Component Research

• Interference, Security, Ad-Hoc Networks and Their Coexistence

Core Technologies required


Signal Processing

• Smart antennas

• Investigation of the interaction among the numerous signalprocessing algorithms and tasks in a highly mobile, high bit rate,and wireless communications environment

• Exploitation of the mobile/base station asymmetry for signalprocessing tasks

• Identification and investigation of important signal processingtasks for very large bandwidth, high frequency, and unreliablechannels

Core Technologies required(continued)


Networking/Mobile Computing


• ��

– Hierarchical, mobile, ad hoc network architecture

– Ad hoc peer-to-peer wireless networks

– Cellular wireless network architectures

• ��

– effective and fair support of widely diversified traffic components

– adaptivity to rapidly changing network conditions

– ability to interact with the application layers, providing criticalinformation about network resources

– ability to interact with the physical layers (antennas, channelmodulation and coding schemes, power control) so as to bestutilize the channel in changing conditions


System Issues


• How integrated services will be supported

• Dynamic resource allocation

• Joint source and channel coding

• Overall system topology

• Integration of all layers of the protocol stack

• How to optimize the combined multiple adaptive subsystems,such as error correction, interference suppression, and multipathabatement


Mobile Applications


• Caching (data replication)

• Smart push and seamless pull for predictive prefetching basedon user profiles using multicast network protocols

• Transaction management (recovery, modeling)

• Software adaptability (including query optimization)

• Security

• Computing paradigms for information access over highbandwidth wireless links. (client-server, client-agent-server,proxies, etc.)


Mobile Applications

• Fault tolerance/recovery to solve some of the problems associated withincreased error rates as the bandwidth increases

• Extensive research in data modeling, database query languages,uncertainty management, and indexing according to the mobility

• Location dependent data and applications (including queries based onmobility direction)

• Organization and content of Broadcast data

• Interfacing with and querying networking services



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• Overview


• Core Technologies required

> Network Evolution

• All IP Networks


Network Evolution

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• Figure Mobility and information transfer rate relationships between second, thirdand fourth generation wireless systems


Evolution Steps

• Current Cellular Networks– Radio Access Networks

– Separate Voice Core Networks and Data Core Networks

• Evolve to– Integrated Core Networks (maybe IP Core Networks)

• first, IP core networks provide Gateway interface to currentRadio Access Networks

• then, Radio Access Networks will be connected via IPinterface(the first step may be skipped)(at this stage, all MSmay use IP for all the services)

– then, IP-based BSS(Base Station System)• BSC and BTS connected via IP networks

Network Evolution(continued)


Mobile Network Evolution(3G --> 4G)

Network Evolution(continued)

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• Overview


• Core Technologies required


> All IP Networks


Other Factors• IETF (e.g., MGCP)

• Carrier Networkse.g. Sprint

• TINA-C

• ITU-T SG-16 H.323

• ATM Forum

Other Factors• IETF (e.g., MGCP)

• Carrier Networkse.g. Sprint

• TINA-C

• ITU-T SG-16 H.323

• ATM Forum

All-IPStandard

All-IPStandard

3GPP2• TSG-S Core-IP Ad-Hoc

3GPP• IP Forum• Evolved GPRS?

3GPP2• TSG-P

• TSG-A IP for IOS

• TSG-N Exploratory

•TIPHON•CDG WI&IS•MWIF

All IP Networks


All IP Networks(continued)

3GPP All IP Network for R00• Architecture for All IP Network(TR23.922 v1.0.0)

– All IP Network based on ERAN(EDGE-RAN) and UTRAN forR00

– All IP Network Options• Evolutionary IP Network : Migration from R99(ATM based) to

R00(IP based), UMTS voice service and VoIP service.

• Revolutionary IP Network : Fully new IP network for R00

– Characteristics• Based on an evolution of GPRS

• Common network elements for multiple access types includingUTRAN and ERAN

• Packet transport using IP protocols

• IP Client enabled terminals

• Support for voice, data, real time multimedia, and services withthe same network elements.


R00 Reference Architecture : Revolution from R99


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R00 Reference Architecture : Evolution from R99


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3GPP2 Activities


• Use a 3-step approach to move from current Network Reference Modelto new reference model.

• Leverage existing efforts in the international community to work for aharmonized solution.

• All IP AdHoc will lead the efforts within 3GPP2

• All IP AdHoc will develop requirements, stage-1, and new networkreference model

• TSG-S will perform normal role

• TSG-A will continue to define access network interfaces

• TSG-N will provide core network support for signaling and services

• TSG-P will provide overall IP expertise and leadership and voicetransport capability

• TSG-C will work to optimize air interface to determine where IP isterminated.

• All 3GPP2 WG MUST work very closely together to be successful

Documents

4G Mobile Networks - brahms.kaist.ac.krbrahms.kaist.ac.kr/professor/ftp/2nd_workshop/09-4GMobileNetwork_d... · • Fault tolerance/recovery to solve some of the problems associated