Transcript GSM-on-the-Net and FMC issues

GSM-on-the-Net
and FMC issues
Lill Kristiansen
based partly on paper from Ericsson review 1998
http://www.item.ntnu.no/~lillk/docs/gsm-on-the-net-1998046.pdf
and partly on own work at Ericsson 1998-2001,
GSM-on-the-Net viewed in 1998
and in 2007
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Background
• from the paper:
• The handling and sharing of information is of
vital importance to the business world.
• To this end, many companies have installed a
local area network (LAN) to make in-house
networking and communication more efficient.
• Internet/intranet, e-mail and databases are a few
examples of applications and entities accessible
from a LAN.
GSM-on-the-Net viewed in 1998
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Why? in 1998
• IP-telephone was emerging (mostly on
PCs)
– VoIP but also shared applic. &video
• Ericsson: strong position in public GSM
– wanted the GSM-UMTS-track to continue
– GSM-on-the-net was targeted towards the
enterprise market
– ’intergration/convergence with databases
(address books, customer relations etc.)
GSM-on-the-Net viewed in 1998
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Evolution of IP Telephony to
Multimedia
Players, market
Mobility/Wireless Integration
Next Generation
Converged Networks
Integrated Services
Data/Voice Integration /Multimedia
Low-cost telephony
Basic Voice
98
99
´00 ´01 ´02 ´03 ´04 ´05 ´06 ´07 ´08
First Wave/NGT
Second Wave/Incumbent
GSM-on-the-Net viewed in 1998
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Megaops /Mobile
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Former technology for enterprises
• In DECT, all user services reside in the PBX, while all wireless-related
services (for example, roaming and handover) are handled by a
mobility server.
• In the case of GSM, new features are introduced in the macro
network in order to support typical office services. (proffnett etc.)
– For example, home zones make it possible to distinguish between
external calls and calls made in the office; virtual private networks (VPN)
support private numbering plans.
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”Future proof”
• The PBX market is changing rapidly, however,
and sooner or later today’s solutions, which are
based on proprietary hardware and a circuitswitched environment, will be replaced by PBXs
operating according to the Internet protocol (IP).
• Clearly, therefore, a sustainable, long-term
solution for GSM in the office will have to be
based on IP. (“future proof”)
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user and terminal mobility
• Terminal mobility
– A terminal can be moved around
geographicallywithout losing contact with the system.
• User mobility
– A user can opt to access GSM on the Net indifferent
ways.
– Regardless of whether a phone or a PC is chosen as
a means of access, the system will keep track of the
user and the terminal’s capabilities.
• (Registration via PC is not by using the SIM-card)
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FMC several generations
•
Steinara pketches a solution to add a SIMcard reader to add fixed phones
to integrate with GSM
– This will make fixed voice an ’access technology’ into GSM
– GSM will be the core system
– we can call this ”2G FMC”
•
No so in GSM-on-the-Net! There a new generation of services ”3+G” (3GAll-IP) is the new core ”3+G FMC”
– ’access antagonistic system’
– Core system is future proof IP allowing for MMoIP / XoIP (anything over IP),
• today partly called VVoIP
– PSTN, GSM, LAN are all access technologies
• each with some restrictions
• GSM: good mobility but not VVoIP
• PC: XoIP and good UI, but only nomadic mobility (unless WLAN with handover support
is added as well)
• Issue: session handover, in particular from IP to the GSM-part
•
If GSM-on-the-Net is deployed publicly: Then it is IMS (and 2G GSM may
play a smaller part in the system over time)
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GSM on the Net: one user,
several phones
From Ericsson Review No 04, 1998 http://www.ericsson.se/review/pdf/1998046.pdf
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”Service architecture”
• A user’s service profile is
stored in the service node, not
in each type of access.
(“access antagonistic”)
• This means that all specified
services are available to users,
no matter what type of terminal
they use to access the system.
– Keeping track of terminal
capabilities that may limit this.
– ” However, the man-machine
interface or limitations in
bandwidth in the chosen
access may reduce or inhibit
the use of some services.”
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System topology - Next generation
networks
Today
• Separate Networks
• Separate Users
• Separate Services
• Separate Accesses
• Same Core network
• Same User on different
accesses
• Same Services
GSM-on-the-Net viewed in 1998
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CATV
Data/IP Networks
Tomorrow
PSTN/ISDN
PLMN
Separate Services
Separate users
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System topology - Next generation
networks
Today
• Separate Networks
• Separate Users
• Separate Services
Content
Servers
Communication
Content
Control
Backbone
Network
Tomorrow
• Separate Accesses
• Same Core network
• Same User on different
accesses
• Same Services
Access
GSM-on-the-Net viewed in 1998
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Access
Access
Users
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Virtual Home Environment
(input
to
ETSI
Tiphon)
•The user may log on from anywhere
Services
•Visited GK control his own resource
•The visited GK contact home GK and
routes the call (but not necessarily the
media) via the home GK
I/f
User/
subscriber
database
Home GK
Registration via visiting GK to home GK
Visited
GK
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Benitif box (selling arguments)
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For the operator, GSM on the Net offers:
For the user [enterprise mainly, end-users
partly], GSM on the Net offers:
•
freedom at work—the same “look and feel”
increased GSM traffic—new subscribers and
wherever the system is accessed (whether
lower churn
the user is in the office, at a subsidiary, at
Furthermore, the business user’s behavior
home, or traveling);
pattern, in terms of calling frequency and
•
convenience—having GSM integrated into
call duration, will transfer to global use as
the office gives the convenience of one
well;
phone and one number. The same phone is
profit margins—if supplied by the operator,
used, regardless of user whereabouts,
system equipment (servers and phones) will
within or outside of the office;
boost profit margins through increased
•
cost-effectiveness—implementation costs
product sales and more service agreements;
are
low because existing PCs and LANs are
new services—the provision of convergence
used. Similarly, operation costs are low
services will generate more revenue.
thanks to low-tariff, local traffic (through local
Examples include service packages, which
switching); differentiated user authorization
can be tailored to suit individual
available resources for administration (for
organizations and vertical market
example, the IT support team);
applications.
adaptability—the system is a smoothly fitting
part of the existing network environment
(and applications) and can easily be
expanded and improved with respect to
capacity, functional content, and quality;
•
scalability—flexible service and application
design (server applications), easy-to-add
base stations and handsets.
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and in 2007
More on business
• GSM radio frequency is licenced
• GSM operator stay in the value chain
• Later:
– Ratate this business chain with e.g. OBAN
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Deployment
• How to make ”boxes” out of the logical
architecture
– taking scalability and more into account
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Small and medium-size company
solution
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Large-company solution
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”PS: postscript”
• Many press releases around 98-2000 about the
system (trials around the world).
– No press release to close down the system (such
press releases normally are not produced)
• Architecture went into IMS
• A research paper from 2002 (by Ericsson
people):
– Sharareh, A., Matteo, G., and Gianluca, T. 2002. Quantitative
analysys for telecom/datacom software architecture. In
Proceedings of the 3rd international Workshop on Software and
Performance (Rome, Italy, July 24 - 26, 2002). WOSP '02. ACM
Press, New York, NY, 219-226.
DOI= http://doi.acm.org/10.1145/584369.584401
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PPS (enterprise solution in
Ericsson today )
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Communication solutions
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PPPS (Ericssons views on
enterprise terminals today)
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