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Home Information Management Services
Art Harvey
Broadband Networks Research Labs
2 GAH 5/23/02
Practicality Intrudes
• Vision: – The presence of a home network will enable creation of
many new applications and services • Such as Home Information Management Services
• Reality: – I encounter difficulty in simply adding devices and
software to my home PC and in keeping the PC operating. Imagine life with a home network
3 GAH 5/23/02
The Real Topic of this Talk
• Challenges of making home networks easy to install, use and maintain
• Industry efforts to address this problem• Our approach to these issues• Home Information Management Services
– An application that addresses an emerging need and illustrates how we think Home Networks should behave
What is a Home Network?
• A “Home Network” connects consumer devices in the home to facilitate communications among the devices
STB
FixedWireless
WirelessAdapter
WirelessHomeLAN
Media AccessGateway
Existing Telephone Wiring
InternalHPNA
PrinterAdapter
IndoorCM/BTI
VoiceAdapter
OutdoorCM/BTI
Fax
VoiceAdapter
NoAdapter
4
5 GAH 5/23/02
Some Home Network Application Drivers• Technology advances make it practical
– Small, low cost storage and computation– High bandwidth distribution– Evolution of MAC/PHY standards for the home
• Wireless devices
• Economical device sharing and control– Consolidation of display devices, and automation
• Migration to lower cost IP based services– Voice, video and data
• The Internet• Entertainment and multimedia
– Multi-player gaming, video on demand
• Services targeted to home consumers– Messaging, backup, e-commerce, remote sensing
6 GAH 5/23/02
Rosy Predictions
• The home-networking equipment market is expected to grow from about $600 million this year to more than $5.7 billion by 2004 (Cahners In-Stat Group)
• More than 12 million U.S. homeowners want to implement home-networking capabilities within the next year (Yankee Group)
• Cahners In-Stat Group predicts annual sales of 30,000,000 residential gateway units for a total of $5 billion in 2005
But…• Widespread adoption requires substantial
improvements in ease of use, security, and robust operation
7 GAH 5/23/02
Challenges
• Accessible to normal humans– No 4-letter words
• DHCP, RARP, ICMP, RSVP, IGMP, NAPT, SNMP, TFTP, MPLS…
• Configuration and management; Inter-working– Possibly more than one connection to the Internet
• Cable modem, xDSL, Fixed wireless, Ethernet over twisted pair (EFM), Fiber to the home (FTTH), Satellite, …
– Variety of home interconnects
• CAT5 Ethernet, wireless LAN (802.11x / proprietary), wireless PAN (Bluetooth), phone line (HPNA), power line (X10/CEbus, HomePlug), wired clusters (IEEE 1394, USB…)
• Changing connectivity
– Multiple device types and multiple devices of each type
– Multiple protocol suites
– Multiple servers of the same type
8 GAH 5/23/02
More Challenges
• Fault diagnosis and maintenance– Detect failures and misconfiguration
• Robust– Fault Tolerant
• Local effects only
– Self-stabilizing
• Deterministic
• Secure– Always connected to Internet means new risks
– Control Access and operations on resources
• Quality of Service (QoS)– Needed for applications that have minimum requirements on
throughput, delay or delay variation for acceptable operation
• Video, gaming
9 GAH 5/23/02
Current Solutions May Not Always Apply
• A Home Network differs from an Enterprise Network– Cost sensitivity
• IP address sharing leads to new problems
– Scale
• Many homes with few users in each
• Many simple, specialized devices per user
– No IT department
10 GAH 5/23/02
Industry Activities
• IETF ZEROCONF– General, ad hoc formation of networks– Not specific to home
• Residential Gateway approach– Designed by and for access providers (e.g. MSO)– CableLabs
• CableHome• http://www.cablelabs.com/cablehome/specs/CH-SP-I01-020405.pdf
– DSL Forum• Similar to CableHome approach
11 GAH 5/23/02
Observations on CableHome
• Designed from a cable provider viewpoint– Aimed at delivering managed services from the MSO
network to the home network– Example: focuses on protecting MSO rather than home
• Architecture presumes a cable-modem based residential gateway– Won’t help with your home network if you don’t have a
CableHome compliant residential gateway
• Points to existing standards where applicable– IP-based
12 GAH 5/23/02
CableHome Architecture
AccessNetwork
HomeNetwork
Home Gateway
Cable Home Domain
MODEM
Services• Management & Provisioning• Addressing & Forwarding• Quality of Service• Security
13 GAH 5/23/02
CableHome Services
• Remote service provisioning by MSO• Secure, remote management of gateway by MSO• SNMP proxy for managing devices in home• DHCP for IP address and parameter configuration• ICMP ping• UDP/TCP loopback/echo• NAT/NAPT• Mixed bridging/routing• DNS• CQoS (extension of PacketCable QoS)• Firewall (two-way)
14 GAH 5/23/02
Integrated Services Home Networking
• Systems approach to unify home network and to provide coherence and ease of use– Home network management and maintenance
– Naming and discovery of devices and services
– Automated configuration
– Infrastructure
• Communications
• Application development (middleware)
– Security
– Applications for the home
• Evolutionary– Build on existing standards (e.g. CableHome)
– Emphasize simplicity of approach
– Minimize changes to devices
– Leads to more server-based approach
15 GAH 5/23/02
Home Information Management
• Information is created and collected rapidly at low cost– Digital photography, video clips, financial statistics, …
• Need to protect, share, sort, classify and find data– Some data are more valuable than others. Data needs to be:
• Classified with respect to value and other metrics
• Protected from unauthorized disclosure
• Shared with authorized principals
• Protected against loss
– Information is stored in a myriad physical devices some of which move. People would like to:
• Attach devices (that store data) to network
• Locate and retrieve data from these devices
• Display data anywhere
16 GAH 5/23/02
Photograph Management 1
• Find pictures on devices attached to home network– Automatically find and configure devices as they attach to
network
– Discover pictures on device
• Index pictures for later retrieval by attributes– Analyze content automatically
• Facial and shape recognition
• Other attributes– Date, location, …
17 GAH 5/23/02
Photograph Management 2
• Policy-based management– Protection and access control
• Share with friends and family– Move/back-up
• Access anywhere– Adapt content to display device– User annotation via different interfaces
• Voice or text– QoS infrastructure
18 GAH 5/23/02
Cheese
• Connect and configure
Name: He Slept HereStorage Location: CameraType: PhotoPhoto Content Attributes:• People: George Washington• Place: Our home in DC….
Conceptual Illustration
Name: New picture xxxxStorage Location: CameraType: PhotoPhoto Content Attributes:• People: George Washington• Place: Unknown….
Yes
Is this George Washington?
Home Network
• Discover device and find pictures
• Automatically index
• User confirms and adds annotations
Home Server
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