Wireless Case Study Jan Snyder San Antonio Community Hospital Upland, CA.
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Transcript of Wireless Case Study Jan Snyder San Antonio Community Hospital Upland, CA.
• Highly mobile workforce
• Need instant and continuous access to information
• Desire greater staff efficiencies
• Opportunity to improve service
Why Wireless?
• First-generation WLAN installed 1999
• Wi-Fi: intriguing but costly to install and support
• Difficult to troubleshoot, limited capabilities
• Very difficult to scale
Wireless Experience
• Physician/nurse communications
• Access to PACS (Picture Archiving and Communications Systems)
– Storage and retrieval of radiographic images
– Improves drug delivery accuracy
• Efficient patient flow management
• Leverage existing infrastructure
Critical Requirements
• PACS network requires failure-resistant infrastructure
• Layer 3 network
– Two core switches
• No failure in 43 months
Importance of Redundancy
• Crossing Layer 3 subnet boundaries is critical
• Layer 2-based WLAN system enables greatest mobility
• Applications, such as voice, uninterrupted while roaming
• Secure connections link wireless users between PACS subnets
• Secure encryption guarantees privacy
Need for True Mobility
• Emergency – bedside data entry
• Surgery – wireless x-ray display
• Admission – quicker assessment
• Case management – improves care, streamlines patient flow
• Discharge – frees up bed space for new patients
Services Improved
• Permits nurses to communicate with physicians
• Requires support for fast roaming with no change of IP address
• Requires strong QoS in WLAN
• Enabled via new PBX that links wireless to desktop phones
Voice over Wireless IP
Total Cost of Ownership(One-Year Period)
Old Arch. New Arch.
Capital $180,000 $149,000
Ops Site survey $8,000 $2,000
Cabling $53,000 $53,000
Deployment $37,000 $2,000
Config APs $15,000 $1,000
Support $25,000 $2,000
subtotal $128,000 $63,000
TCO (one year) $318,000 $212,000
Total Cost of Ownership(Five-Year Period)
Cost Old Arch New Arch
Capital $360,000 $298,000
Operations $488,000 $148,000
TCO
(5 years)$848,000 $446,000
Productivity GainsOld Net New Net Annual
Savings
Case mgmt 15 patients/
nurse/day
20 patients/
nurse/day$150,000
Emergency $20,000
Admissions $86,000
Discharge $67,000
IS $42,000
Total $365,000
Formula: 33% productivity increase X annual nurse salary X 15 nurses = $150,000
• Costs for one year = $212,000
• Savings for one year = $365,000
• ROI = less than one year
Return on Investment
• Physicians and nurses communicate continually
• Constant access to PACS for radiology images
• Efficient patient flow
– Admission, case management, discharge
• Leverages existing network
WLAN Meets Needs
Lessons Learned(Microsoft 2001 Deployment)
Microsoft Problems SACH Solution
25 users per AP Design for capacity
10-meter rule Dual-radio APs
Manual site survey Automated planning
1 service call per 40 APs per day
Automated tool for troubleshooting
Two cables – datalink and console
Two cables – redundant Ethernet
Backup AP configs Configs stored in database
“Buglight” syndrome Dual PoE, datalinks
• Users roam and communicate
• Ease of use– No changes to their handheld device, wearable
phones
• Security – authentication and encryption– Users transmit data securely
• Mobility– Users always have correct network access as they
roam (Identity-Based Networking)
Benefits for Users
• Simplified planning and design
• Depiction of RF transmissions
• Automatic configuration of WLAN– WLAN switches and APs
• No changes to clients or core network
• User location on the floor plan
• Rogue detection and location on plan– APs, users, ad hoc users
• 70% to 90% reduction in OpEx
Benefits for IT