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Low Cost ATM Technology
and
Wireless Ad-Hoc Networks
Rolf Kraemer
Philips GmbH Research Laboratories Aachen
[email protected]
Philips
Research
Aspen Technology Summit-21.05.98 Page:1
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Content
• Vision of an In Home Digital Network
• End to End View
• Embedded ATM Switching for Low Cost
Networks
– Functional Switch Decomposition
– Single Chip Approach
– Distributed Software System
• Wireless ATM as extension of Embedded
Switching
• Ad-Hoc W-ATM-LAN for Low Cost Broadband
IHDN
Philips
Research
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Vision of an IN-Home Network
Monitor
Teletainment
Gateway
Phone
Scanner
Loudspeaker
PC
Audio-Tuner
TV-Application
Printer
TV-Tuner
In Home Digital Network
Light
Control
DVD
Heating
Control
Speech
Recognizer
VCR
Camera
Home Control
System
Philips
Research
Aspen Technology Summit-21.05.98 Page:4
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End to End Service Chain
Phone
Monitor
TV-Tuner
Scanner
Internet Broacast
Server TV-Server
Loudspeaker
HFC
PC
Audio-Tuner
xDSL
Printer
Teletainment
In Home Digital Network
Gateway
Light
PON
Control
Heating
Control
VCR
LMDS/MMDS
Speech
Recognizer
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Research
Other
Other
Other
Servers
Servers
Servers
Camera
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VOD
Server
DVD
“Embedded Switching System”: Requirements
•
•
•
•
•
•
Scalability of System Size
Linear Scalability of Cost with Number of Ports
No Cost Offset
Scalability of Service Architecture
Decentralised Signalling and Switch Control
“Graceful Degradation” Behaviour in Case of
Faults
Philips
Research
Aspen Technology Summit-21.05.98 Page:7
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Functional Partitioning
1/3
PortFunction
Switch
Function
PortFunction
Control & Man.-Function
Observations:
•The Port Function is becoming increasingly complex (z.B. by ABR)
•Traditional Switch Concepts have too little Flexibility to support
additional new services (e.g. Processor Speed problems)
•Switches are optimised on Throughput and not on Network operation
Philips
Research
Aspen Technology Summit-21.05.98 Page:8
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Functional Partitioning
2/3
PortFunction
Switch
Function
PortFunction
Control & Man.-Function
Switch Concepts:
Switch Fabric
Bus Based Switches
Distributed Switches
Two main decisions have to be taken
Which Basic-Component have to be taken
Which connection topology is best suited for the basic component
Philips
Research
Aspen Technology Summit-21.05.98 Page:9
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Functional Partitioning
3/3
PortFunction
Control & Man.-Function
SwitchComp
Transceiver
Switch
Function
SwitchComp
Transceiver
SwitchComp
Transceiver
PortFunction
SwitchComp
Transceiver
System on Silicon decision :
The functional component is chosen such that one Port-, parts of the
Switch-Matrix and parts of the Control-Function is within one Element
The connection topology is chosen such that a full switch consists of
a self healing double ring
Each Switch Component is a Mini-Switch with all necessary parts
Philips
Research
Aspen Technology Summit-21.05.98 Page:10
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Transceiver
Transceiver
Distributed VP/VC
Switch
Transceiver
Transceiver
Transceiver
PABX
Transceiver
Sample Device Connections
Multiport
Transceiver
Transceiver
Alarms
Presence
Detector
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Research
Camera
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NW1
in
NW1
out
Central
Cell
Memory
NW2
in
UNI
in
POL
NW2
out
Trl
in
Trl/POL-RAM
Trl
out
DMA/AAL
PI-bus
control
Trl-RAM
PI-Bus
Bus-IO
RISC-CPU
Local Bus
Philips
Research
UNI
out
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User Network
User Network
Modular structure of basic component
CMC-155 Chip
Size:
Transistors:
Memory:
Frequency:
Pins:
Technology:
Supply Voltage:
Current:
Philips
Research
144 mm2
1.98*106
200 kb
20MHz
208
0.5 m
3.3 V
0.4 A
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Distributed Switch Software
Switching Applications
i.e. Signalling, Self Healing, etc.
Management Applications
i.e. Configuration MM, Fault MM, etc
Basic Switch Services
Distribution Layer (SODA-Distr. OS)
PSOS
Transceiver
PSOS
Transceiver
PSOS
Transceiver
PSOS
OS
Transceiver
Server
NIC
User Switch Ports
Philips
Research
Aspen Technology Summit-21.05.98 Page:14
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Intelligent Cabling
Reliable Double
ATM Ring
Single-Chip ATM
Processor (CMC155)
PABX
Area: 200-700m2
Distributed Software Architecture
ATM
Switch
Philips
Research
Aspen Technology Summit-21.05.98 Page:15
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In Flight Entertainment
Game-Server
Office-Server
Ring Interconnection
VOD-Server
VOD-Server
Ring Interconnection
In-Seat-PCs
Philips
Research
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CMC-Roadmap
Functionality
CMC155/622Pro
CMC155Pro
CMC622/2400PRO
CMC10000PRO
CMC622Pro
CMC25/155Pro/NIC
CMC25/155Pro
CMC:
PRO:
NIC:
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Corporate Multimedia Communication
embedded Processor
embedded SAR functions
Aspen Technology Summit-21.05.98 Page:17
Time
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Relation between UMTS and Wireless-ATM
Mobility
Vehicle
Outdoors
Walk
Fixed
UMTS/
FPLMTS
Wireless-ATM
Walk
Indoors
Fixed
0,2
2
20
200
Speed Mb/s
Philips
Research
Aspen Technology Summit-21.05.98 Page:18
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Standard Basestation Approach
ATM-Switch
MES
ATM-NNI
BSC
WATM-‘R’ RAL
ATM-Switch
MES
Cell
Hand-Over
ATM
ATM
Radio
Radio
PortATM
ATM
Radio
Port
Radio
Port
Port
ATM-Switch
MES
ATM
ATM
Radio
Radio
PortATM
ATM
Radio
Port
Radio
Port
Port
Cell
Hand-Over
Philips
Research
Aspen Technology Summit-21.05.98 Page:19
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WATM-Protocol Stack
Control
ATM Network Layer
Data Link Control
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Research
Wireless Control
ATM Adaptation Layer
Control
Wireless Control
User
ATM Adaptation Layer
ATM Network Layer
Data Link
Control
Medium Access Control
Medium Access
Control
Phy: High Speed Radio
Phy: High
Speed Radio
Aspen Technology Summit-21.05.98 Page:20
User
Standard ATM
Physical Layer
P
Distributed Basestation Approach
ATM-Switch
ATM-NNI
ATM-UNI
Transceiver
Philips
Research
Transceiver
Transceiver
Transceiver
Transceiver
ATM
Radio
Port
ATM
Radio
Port
ATM
Radio
Port
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WATM-‘R’ RAL
NW1
in
NW1
out
Central
Cell
Memory
NW2
in
Medium-Access
(C-MAC)
S-MAC-CPU
POL
Trl.
Trl/POL-RAM
DMA/AAL
PI-bus
control
PI-Bus
Bus-IO
RISC-CPU
Control-Interface
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Research
NW2
out
User Network
Radio Interface User Network
CMC-Chip with MAC Support
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Wireless ATM: Ad-Hoc Scenario
Ad-Hoc WATM
WATM
Terminal
WATM
TA
‘R’ RAL
WATM
TA
WATM
Terminal
ATM
ATM
‘W’ UNI
‘W’ UNI
ATM
‘M’ NNI
Ad-Hoc
Enabled
WATM
TA
WATM
Terminal
ATM
‘W’ UNI
Philips
Research
Aspen Technology Summit-21.05.98 Page:23
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Central
Cell
Memory
Medium-Access
(C-MAC)
POL/
Shapeing
S-MAC-CPU
Ext. DMA/AAL
PI-bus
control
PI-Bus
Bus-IO
RISC-CPU
Control-Interface/ Interface to MT
Philips
Research
User Network
Radio Interface
CMC-Chip with AD-Hoc MAC Support
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Conclusion
• Low Cost ATM is not only feasible but already
available (CMC concept)
• The distributed CMC-Concept allows the
extension to WATM
• The building block approach of the CMC
concept supports the stepwise extension
towards full AD-HOC WATM systems
• A first CMC based WATM demonstrator has
been implemented (10Mb/s)
• First application will be in the office
environment
• The final goal to support IHDN is in reach
Philips
Research
Aspen Technology Summit-21.05.98 Page:25
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