ABC Networks

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ABC Networks

• Per.Johansson_at_ericsson.com

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ABC Research Discussion

• Where we are today -- ABC 1.0
• ABC Research topics
• A proposed ABC 3.0 as goal
• Define requirements
• Sustainable research topics
• Be used!
• All Adaptive Systems activities invited to use
  the ABC testbed
• Content adaptation/adaptive video
• Packet scheduling (QoS) support
• Low pwr routing
• Steps of ABC development -- 1.0 gt 2.0 gt 3.0
  ...
• Near term ABC research issues
• Actively involve people (students)

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ABC testbed today -- ABC 1.0

• Discovers and Selects the best access for one
  terminal
• Mobility for a mobile client (TCP only)

Cellular
Cellular
IP Transit
Cellular Data
ContentApps Network
WLAN
Network Computing Resources
WLAN
WLAN
ABC Client
Ethernet
LAN
LAN
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ABC Research Issues

• Access Discovery
• Discover available access networks and/or access
  devices
• Determine their characteristics IP connectivity
  to mobility server, network technology, cost,
  bandwidth, quality of service, power consumption,
  access network operator, security level,
  coverage, etc.
• Define a general set of parameters to easily
  include new types of access networks
• How to retrieve these? Where are they stored? Who
  gets access to them?
• Access Selection
• Make selection of the best access and/or device
• Policies or algorithms to combine access/device
  characteristics, application requirements, user
  preference, and operator policies
• Who makes the decision? Where (user, device
  network)?
• Prototyping in ABC Access wizard/agent, profile
  server (API)
• Single-logon
• Logon to ONE access network -- Roaming takes care
  of next access
• Based on an AAA infrastructure
• ABC prototype Use SIM card based authentication
  for Cellular lt-gt WLAN roaming

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ABC Research Issues

• Mobility Management
• Session continuity between access networks (e.g.
  Mobile IP, Session layer mobility)
• Session transfer between devices (e.g.
  application states between devices)
• Simultaneous use of several access networks for
  the same application flow (e.g. performance and
  security reasons)
• Single logon security mechanisms need to be
  closely integrated with mobility
• ABC prototype Session layer mobility (session
  continuity) and simple single logon.
• Content Adaptation
• Application content needs to adapt to choice of
  access network and device
• Make use of access discovery parameters (e.g. in
  profile database) to adapt content dynamically
• How should this information be accessed by
  applications (server and clients)?
• ABC prototype APIs provided through the profile
  server
• What type of API? Security aspects?

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Proposed ABC 3.0

• Discovers and Selects the best access for an
  entire network
• Whats the impact on ABC functionality?

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ABC PAN

• Any device in the PAN uses the best access
  network
• Typical Two-hops (PDA - phone - network)
• PAN connectivity may be on Bluetooth or 802.11b
• Mix of local and external PAN traffic
• Architecture and its impact on ABC functionality?

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ABC MANET

• Surveillance type ad-hoc network with internet
  connectivity
• Example Low power, battery driven, semi-static
  nodes (mix of low pwr cameras, gateways, ad-hoc
  routers) updating surveillance server(s) in the
  network
• Peer-to-peer radio mix of Bluetooth and WLAN
• Gateways Cellular, WLAN, Fixed access
• Common power budget for applications and
  communications
• Power aware video coding and routing where
  network lifetime essential
• Impact on ABC functionality
• How is the best access (gateway) Discovered and
  Selected several hops away?
• Mobility maintain session when best gateway
  changes? Combination of ad-hoc routing and
  IP/session mobility? Asymmetric flows?
• Security VPN-like network (encryptionauthenticat
  ion)
• Content adaptation power aware (hops,
  processing, quality)

Surveillance server
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ABC NEMO (Network Mobility)

• Single users or PANs connect to mobile networks
  (train, airplane etc.)
• WLAN for local and cellular for external
  connectivity
• The NEMO contains a Mobile Router (co-located FA
  with routing capabilities)
• Hides away mobility from the NEMO users (e.g.
  through Mobile IP tunneling)
• Nested mobility for MIP clients in the NEMO
  (tunnel in tunnel)
• Impact on ABC functionality ABC primarily used
  by the NEMO provider?
• Discover and Select best connection for the
  Mobile Router
• Interaction with ABC users in NEMO?
• Peer-to-peer communication in NEMO?
• Mobility maintain sessions of several
  users/PANs. Scheduling issues?
• Security Each user part of separate VPNs

ABC NEMO
MR
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General ABC Architecture for best connected
networks?

• Common functionality found in all scenarios
• Discover and Select access over multiple hops
• Maintain sessions when new access (gateway) is
  selected hops away from end device
• Security extends beyond one device (a private PAN
  or entire private MANET)
• Aggregate of users within one ABC service (NEMO
  provider)
• Content adaptation must consider flows passing
  additional low rate links and thin nodes
• Make use of existing solutions -- bits and pieces
  are out there
• IETF specify IP protocols for Zeroconf, MANET,
  and NEMO
• IEEE 802.11b p2p/infrastructure mode
• Bluetooth PANs enable IEEE-like networking (BNEP)
• ABC will require integration of several solutions

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Next steps for ABC?

• Make ABC useful for other Adaptive systems
  activities ASAP!
• Begin with current ABC 1.0
• Define an extended ABC architecture to support
  ABC networks
• What functionality is important for future
  studies?
• Implement an ABC 2.0 that covers a subset of
  the network functions
• Next step in functionality for Adasys activities
  using ABC?
• A first step could be a PAN-like extension to
  current ABC...
• How do we do this?
• Form a specific ABC group?
• ...or become part of existing adasys activity?
• Define ABC oriented student projects to study and
  develop pieces for ABC?