Transcript Technology: Core Networks & The Role of IP

Core Network Technology
Prof. Hamid Aghvami
Centre for Telecommunications Research - King’s College London
Wireless Multimedia Communications Ltd
Outline of Presentation
• Fixed IP-based Core Networks
• Mobile Core Networks
• IP-based IMT Network Platform( IP2 )
• Research Challenges
• Inter-working Issues
• Co-operation between UK and Japan
IP-based Fixed Network
• One of the priority policy areas of the government-led “e-Japan”
programme is the establishment of an ultra high-speed network
infrastructure.
• It has set goals to provide 24-hour connection to high-speed Internet
access networks for at least 30 million households and ultra high-speed
Internet access networks (30-100 Mb/s) for 10 million households
within 5 years.
• It has also set a deadline of 2005 for the deployment of IPv6 in all public
and private networks.
• The government has lowered the tax on IPv6 equipment.
• All IP equipment currently manufactured by Japanese manufacturers has
dual protocol stacks, both IPv4 and IPv6.
• The R&D activities in IP-based networks are founded on the recent IETF
protocols and recommendations.
Mobile Networks
Beyond 3G
USA
1G
2G
AMPS
ANSI-41
3G
Phase I
(3.5G)
Evolved
ANSI-41
Japan
MCS
PDC
IMS
Evolved GSM/GPRS
Evolved
GSM/GPRS
NMT
Europe
Evolved ANSI-41
GSM/GPRS
TACS
Internet
IPV4
IPV6
Evolution of Mobile Networks and Internet
Phase II
(4G)
IP2 Ad-Hoc Study Group
ITU-R WP8F
ITU-T IMT SSG
3GPPs, WWRF, IETF
ARIB
(Association of Radio,
Industry and Business )
Radio Experts
Long-term All IP
Conference
IP2 Ad-Hoc
Study Group Structure
TTC
(Telecommunication
Technology Committee)
IT/NW Experts
IP2 Ad-Hoc Study Group
Chairman: Dr. Masami YABUSAKI (NTT DoCoMo)
Vice-chairmen: Mr. Kazuyoshi SATO (Mitsubishi)
Dr. Masayoshi OHASHI (KDDI)
Member Companies;
NTT DoCoMo, Inc.,
Toshiba Corporation,
KDDI Corporation,
Seiko Epson Corporation,
J-Phone Co., Ltd.,
Sony Corporation,
Nippon Ericsson K.K.
KYOCERA Corporation,
Fujitsu Limited,
Mitsubishi Electric Corporation,
Lucent Technologies Japan Ltd.,
CRL,
NEC Corporation,
NTC (Nippon Telecommunications Consulting
Nippon Motorola Ltd.,
Co., Ltd.),
Nokia-Japan Co., LTD.,
NTT SOFT,
NTT,
QUALCOMM JAPAN,
OKI Electric Industry Co., Ltd.,
DENSO Corporation,
SHARP Corporation,
Hitachi Ltd.,
Siemens K.K.
NTT Communication Corporation.
Matsushita Communication Industrial Co., Ltd
IP-based IMT Network Platform
IP-based IMT Network Platform ( IP2 ) main requirements:
• Huge multimedia traffic handling.
• Diversified radio access support.
• Advanced mobility management.
• Seamless/ubiquitous services
IP-based IMT Network Platform
Applications
AP2
AP1
AP3
APn
Middleware
Service support sub-layer
Location
Accounting/billing
Media conversion
Distribution
Basic network management sub-layer
RRM
MM
IP-based transport NW
C/SM
Security
IP
QoS
ISDN/
PSTN
IP
IP
IP
Radio
IP
Radio
IP
IP
Radio
General architecture of the IP-based IMT network platform
Internet
Research Challenges
• Full integration and convergence of mobile and Internet networks.
- Common mobility management
- Efficient and dynamic re-routing within the Internet for moving terminals
- Separation of location management and routing management
• Design of middleware layer
- Separation of basic network control from transport
- Interaction between service support sub-layer and applications and
between service support and basic network management sub-layers.
• No separation between RAN and CN.
- Common interface between radio resource management and other
network control entities
Research Challenges
“ The greatest challenge is not a technical one; it is how to influence the IETF
to adopt the common protocols and functionalities required for IP2 . Radical
changes to existing IETF protocols and the IP layer model will be required.”
Inter-working Issues
• The inter-working of WLAN and 3G cellular networks is fully recognised
and some study and research work have already been carried out.
• Although the benefit of inter-working between broadcast and cellular
networks has been recognised, no research activities have yet been
announced or reported.
• The use of WLAN equipment based on IEEE 802.11b is common in Japan
within private networks and it seems that IEEE 802.11a will follow it.
• Recently, NTT Communications Corp. has launched its WLAN public
services.
Co-operation between UK and Japan
• Co-operation was proposed between UK and Japan in the areas of:
- Future network vision and its general requirements.
- Evolution scenario from IMT-2000 networks.
- Common global standardisation organisations and schedules.
• Co-operation was also proposed between the IP2 Ad Hoc Study Group and
Mobile VCE.