MobilityFirst(下一代互联网报告说明)

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Introduction（Protocol
stack）
• How a name is converted into a GUID by the NCS.
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Introduction(Protocol
stack)
• Part 4: Two protocol components, Name Resolution & Routing
GNRS; GSTAR;
• Part 5: Experiment on GENI. • Part 6: Comments
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Background
So, what’s the problem?
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CS Department of Nanjing University
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Background
1. Mobile network pose additional architectural challenges:
• By 2015, mobile data devices will significantly outnumber fixed hosts on the Internet. • “Traffic from wireless devices will exceed traffic from wired devices by 2014. In 2016, wired devices will account for 39 percent of IP traffic, while Wi-Fi and mobile devices will account for 61 percent of IP traffic.”-Cisco. • Mobile Internet will include: Wireless Sensor, Machine-to-Machine(M2M),Smart Grid and Vehicular(V2V) and so on.
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CS Department of Nanjing University
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Introduction(Examples
3)
• An enhanced content caching service using the optional compute layer • get (Content_GUID, options=cache_servic e + nearest).
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CS Department of Nanjing University
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Introduction(Examples
1)
• How the protocol works for such a dual-homing scenario.
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7.
Storage-Aware Intra-domain and Edge-Aware Inter-Domain Routing；
Hop-by-Hop Transport(end-to-end) Optional in-network computing services;
8. 9.
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Outline
• Part1: Background/Problem need to be solved. • Part2: Basic idea.
From the perspective of the FIA project; From the perspective of this paper;
3. Cellular network can’t work well.
Service gateways needed; Cellular-IP gateways have scalability, performance, management, and
security problems;
4. …
• From the perspective of this paper
To present an overview of the MobilityFirst network architecture, and give some description of the progress.
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concepts)
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CS Department of Nanjing University
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Introdwk.baidu.comction(Design
• Details of design features.
1. 2. 3. 4. 5. 6.
features)
Separation of Names and Addresses;
To use this opportunity to fundamentally re-evaluate the purpose, functionality and trustworthiness of the network in the all-important context of mobility everywhere. Furthermore, design a new architecture to directly address the challenges of wireless access and mobility at scale, while also providing new services needed for emerging mobile Internet application scenarios.
• Part3: Introduction to the architecture.
Design goals;
Main architectural concepts & features; MobilityFirst protocol stack; Some examples of specific advanced services supported;
Security based on Verifiable GUIDS; Name-based Network Service API; Hybrid Name(GUID)/Address(NAs) Based Routing;(scalability) Mobile End-Points with MultiHoming; Network Mobility, Ad-Hoc and Disconnected Modes;
Above all, there are two fundamental goals: mobility and trustworthiness
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CS Department of Nanjing University
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Introduction(Architecture
• Architectural concepts.
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• How a message is sent between two end points.
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CS Department of Nanjing University
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Introduction(Protocol
stack)
• What the actions are at a MobilityFirst router; • Robust message delivery.
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Background
• This is a historical opportunity；
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Basic idea
• From the perspective of this FIA Project
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Introduction(Design
goals)
• Design goals of the MobilityFirst network architecture
1. 2. 3. 4. 5. 6. Seamless host and network mobility; No single root of trust (ICAAN); Intentional data receipt ; Proportional robustness; Content addressability ; Evolvability;
• Major header elements • Primary protocol mechanisms
(Name resolution/routing)
• Be centered on the GUID service layer;
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Unified; frequent disconnections; Energy constraints; security;
2. Current Internet protocol are not well-matched to mobile devices, such as:
IP address->static; TCP ->end-to-end;
CS Department of Nanjing University
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Introduction(Protocol
Stack)
• Initial specification (v1.0)
Still evolving and details are being added
• Packet structure
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Introduction(Examples
2)
• An example shows the case with mobility and complete disconnection of the end point; • PDU stored at the edge router; • Query the GNRS.
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Named devices NCS GUID(host id) NA(network id) SID Storage-aware Intradomain routing(GSTAR) Edge-aware inter-domain Hop-by-hop transfer Disconnected Mode Hybrid name/address based scheme GNRS
MobilityFirst: A Robust and Trustworthy Mobility-Centric Architecture for the Future Internet
Reporter: XXX
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CS Department of Nanjing University
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Background
• We are in an era that Mobility PK Traditional network;
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CS Department of Nanjing University
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Background
Some facts that we must face: • Over 6 billion cellular mobile devices in worldwide use today.