An Overview of Handhelds and Wireless

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An Overview of Handhelds and Wireless

• John D. Halamka MD
• Chief Information Officer, CareGroup
• Associate Dean,
• Harvard Medical School

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Trends In Computing
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Growth of Mobile Computing
Source Morgan Stanley Dean Witter Equity
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Architecture of Mobile Solutions
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The Wireless Internet Has a Plethora ofDisparate
Standards
The Wireless Internet
The Wired Internet
Palm, WinCE/PPC, Nokia phone,RIM Blackberry pager
PC, Macintosh
Devices
Applications Layer
Applications Layer
Applications Layer
Operating Systems
Mac
PC OS
Palm OS
Win CE
Symbian
RIM OS
Motorola OS
UP. Browser
Nokia Browser
Networks
eg. TCP/IP
iDEN Mobitex CDPD GSM CDMA TDMA
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Many Different Devices

• PDAs
• Palm OS
• Palm III, V, VII
• Handspring Visor
• Sony Clie
• Symbol
• IBM
• WinCE/PPC
• Compaq iPaq
• Symbol
• HP Jornada
• Casio Cassiopeia

• Laptop
• Pagers
• RIM 850, 950, 957
• Motorola Talk About T900
• Mobile Phones

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New Devices Are Being Introduced
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Wireless vs. Mobile
Wireless solutions are those that are primarily
dependenton network connectivity for core
functionality. Example real time lab results
retrieval Mobile solutions operate in a
disconnect/synced mode toprovide the user with
core functionality when a networkconnection may
or may not be available.Example prescription
writing A wireless solution is mobile whereas a
mobile solution doesnot have to be wireless.
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The spectrum of connectivity
Example
Connectivity
Client Type
Thin Client
Always connected Lab Results Somewhat
connected Calendars Disconnected (Sync)
mode Prescription Writing
Thick client
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Wide Area Wireless Options
3G
2.5 G
2G
Up to 2 mbps
W-CDMA cdma2000
2 mbps 1 mbps 100 kbps 10 kbps
EDGE
Speed Of Network
cdma2000
384 kbps
144 kbps
GPRS
43-115 kbps
CDPD
19.2 kbps
GSM
CDMA
TDMA
iDEN
9.6-14.4 kbps
Today 2001 2002 2003
Source Goldman Sachs, Giga Information Group
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Most Applications Are Enabled by 2.5G
Data Rates (Kbps) 9.6 14.4 32
64 128 384 2000
Applications Application Performance Rating
Short Messaging Synchronization Location
Services Still Image Transfer Email Video Lower
Quality Document Transfer Database
Access Internet Web Access Video High Quality
Fair
Excellent
Poor
Source Motorola
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Wireless LAN - 802.11 b

• A standard established by the IEEE (Institute of
  Electrical and Electronics Engineers)
• The original 802.11 specification was ratified in
  1997
• Provided for 1 Mbps and 2 Mbps data rates
• Too slow to support most general business
  requirements
• Also on the 2.4Mhz spectrum
• 802.11b, ratified in 1999, (also known as 802.11
  High Rate) supports transmission of up to 11Mbps
  within 600ft
• Provides wireless performance and throughput
  comparable to wired Ethernet

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Wireless LAN - BLUETOOTH

• Short range (Up to 30 Feet), low-cost, low power
  use, RF communications standard for connecting
  PDAs, phones, computers, and about everything
  else on the 2.4Mhz bandwidth.
• According to Gartner By 2001, 30 percent of
  phones and 60 percent of PDAs will support at
  least add-on Bluetooth mobile cable replacement
  technology.
• 2000 companies including IBM, Toshiba, Motorola,
  Microsoft and Intel are backing the standard

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Wireless LAN - BLUETOOTH

• Sample applications
• Laptop can connect to office LAN without cables
• Laptop can dial into Net through Bluetooth phone
• PDA next to phone and address books synch up
• Stroll through airport and laptop/PDA picks up
  current flight information

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Solution Types
DivergentDeploymentPath
Integrated DeploymentPath
NativeSolution
WebRe-Purposer
Leveraging existing website to display content
Adding mobile functionality to well established
application systems
Integrated system design for application
deployment including mobile devices
Device specific application
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Web Re-Purposing

• Pros
• Leverage existing HTML site
• Allow quick and easy addition of a new hardware
  device
• Cons
• Mobile solutions require different information
  and user navigation than what is provided from
  the HTML
• Unnecessary/irrelevant portions of the original
  web page reduce the performance of the device
• Solutions fail to take advantage of functionality
  unique to mobile devices such as localization and
  personalization.
• Example Avantgo, Web Clipping

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Web Re-Purposing- Web Clipping

• Distributing lower grade HTML to a Palm OS device
• Works with wirelessly-enabled Palm OS devices
• An HTML page answers a query from a PQA (Palm
  Query Application)
• typically small pages
• follow web clipping HTML guidelines
• Coveragemajor metropolitan areas
• Cannot use named typefaces, style sheets, image
  maps, frames, nested tables scripts and applets
• Can contain graphics, hyperlinks, files

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Divergent Deployment Path

• Pros
• Increased user customization and functionality
  available
• Allows a separate logic flow from web page
• Some solutions allow for thin or thick client on
  device
• Provides increased client functionality
• Cons
• Requires rework and maintenance of presentation
  and flow from current web offering to mobile
  device
• Possible divergence of application logic
• Example Satellite Forms, Pendragon

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Integrated Deployment Path

• Pros
• Integrated web and mobile offering
• Builds on top of existing business application
  logic
• Disconnected solutions are available with some
  suites
• Simplified management
• Possible direct access to data layer/XML
  interface
• Cons
• Possible rebuild of current web site often
  unacceptable
• Example Microsoft .NET strategy

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Native Solutions

• Pros
• Allows full utilization of mobile device
  potential
• Both thin and thick client models available
• Highly customizable
• Disconnected solutions available with some
  solutions
• Cons
• Slow development cycles
• Very difficult to add new devices or change
  network types/providers (limited device and
  network agnosticism)
• Extensive interface and management support
  requirements
• Divergent application logic highly likely
• Examples Metrowerks C

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Security

• Mobile solutions introduce a unique set of
  security concerns.
• Sensitive corporate information on unprotected,
  misplaced device
• Interception of wireless transmissions
• Current security measures focus on
• Encryption
• Authentication of the user
• Tamper proofing devices

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Manageability

• Key features of a robust management solution
  include
• Remote software distribution
• Remote kill of a device
• Password management
• Full end-to-end network management
• Total device monitoring

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HMS Mobile Platform
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Mobile Platform Home Page
 
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Mobile Platform - Courses
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Mobile Platform - Resources
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Mobile Platform Course Detail
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Mobile Platform - Help
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Mobile Platform -Announcements
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Mobile Platform - Tasks
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Mobile Platform - Evaluations
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Mobile Platform - Calendar
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Mobile Platform Calendar Detail
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Mobile Platform - CaseBook
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Mobile Platform - Casebook
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Mobile Technologies at Caregroup

• Wireless ED Dashboard (Web clipping)
• MDPad Prescription Writing on iPaq
• Useful utilities Patientkeeper, ePocrates
• RIM devices
• Email synchronization support in FY02
• Wireless Office

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Harsh Realities

• Market share (who's using what right now)
• Who will pay?
• Who can support (true costs)?
• Confidentiality issues

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Summary

• Mobile and Wireless technologies must be
  carefully tailored to each situation
• Avantgo and the web create a platform neutral
  infrastructure
• Lets use them where they provide a robust
  solution.