1. T-110.7190 Research Seminar on Datacommunications Software
Presentation of the paper “Names, Addresses and Identities in Ambient Networks” (B. Ahlgren, L. Eggert, B. Ohlman, J. Rajahalme, A. Schieder)
Teemu Rinta-aho
T Research Seminar on Datacommunications Software
T Research Seminar on Datacommunications Software
26-Dec-18

2. Background
The main objective of the Ambient Networks project is to enable seamless interoperation between heterogeneous networks
The goal is to enable the vision of networking, where services and information are the focus and access and networking are transparent to the user
T Research Seminar on Datacommunications Software
26-Dec-18

3. The Problem
Incompatibilities between network functionality limit the usefulness of the available networks
Different naming and addressing schemes
Routing between heterogeneous networks
T Research Seminar on Datacommunications Software
26-Dec-18

4. A Solution New naming & addressing architecture
Network connectivity abstractions
Names, addresses and identities
Ambient Control Space functions
Dynamic bindings between named entities
Bridging across different addressing realms
T Research Seminar on Datacommunications Software
26-Dec-18

5. Network Connectivity Abstractions
Bearer
Combines a sequence of flows into end-to-end connectivity primitives for applications and services
Not bound to technology specific locators but higher-level entities in the naming framework
Flow
Abstracts away the underlying networking technology
Provide a uniform view of connectivity for the ACS functions
Bound to technology specific locators
T Research Seminar on Datacommunications Software
26-Dec-18

6. Names, Addresses and Identities
A layered entity model
Focuses on the named entities and not the names used for the entities
Use of multiple namespaces per layer
Dynamic bindings at different layers enable the basic mobility of nodes, bearers and applications
T Research Seminar on Datacommunications Software
26-Dec-18

7. Entities Application service / data object Host entity
SIP services, web pages, …
Connect to points of application attachment
Comparable to e.g. a BSD socket
Application-specific names
URLs, URIs, addresses, …
Host entity
Connect to points of network attachment
A logical entity, but comparable to a physical node attaching to a network, reachable by a network specific locator
HIP-like namespace
T Research Seminar on Datacommunications Software
26-Dec-18

8. Dynamic Bindings
One purpose of a layered naming architecture is to provide dynamic bindings between entities at different levels
With dynamic bindings, names of entities become location independent
This enables different types of mobility without any add-on mechanisms
Indirection and delegation can additionally support advanced mobility schemes, such as network mobility with reduced signalling
T Research Seminar on Datacommunications Software
26-Dec-18

9. Bridging Across Different Addressing Realms
Translation
Gateways between addressing domains
Common namespace
Unique global names
Routing between namespaces
Source routing
Late binding
T Research Seminar on Datacommunications Software
26-Dec-18

10. Summary Presented problems are good & important
It’s easy to present an abstract architecture that seems to solve the problem on paper, but how to go further… How to map to existing systems?
How much does adding new naming layers affect mobility signalling and space requirements for storing the bindings?
Other questions or comments?
T Research Seminar on Datacommunications Software
26-Dec-18