Vertical Design Guide - K-12 Education
Priority by Category
| Criteria | Requirements | |
|---|---|---|
| Density | • Pervasive campus-wide high density • Support Computers on Wheels (CoW) • Eliminate need for dedicated computer labs • 50 - 200 concurrent associations per device • 25 - 100 concurrent students per device • Multiple Wi-Fi video projectors and cameras per device | • Multiple radios per device (4/8/16) • Ability to Utilize additional channels in 5GHz (802.11a/n) • Automatic user load balancing among radios |
| Performance | • Multiple Mbps real TCP/UDP throughput per user • Real-time applications – voice, video • Segmentation by students, staff, guests, devices, etc. | • Multiple radios per device (4/8/16) • Utilize 7X channel bandwidth in 5GHz (802.11a/n) • Local processing/switching/control at the AP • Gigabit Ethernet uplinks • QoS: WMM, 802.1p/Q • Fast and seamless Roaming |
| Coverage | • Multiple classrooms per device • Flexible control of coverage area | • High gain directional antennas • Automatic or manual control of coverage area • Ability to sharply define coverage boundaries for privacy |
| Security | • Rogue AP and threat detection • Authentication and encryption • Filtering/firewalling | • Integrated threat sensor • Proactive threat mitigation • RADIUS authentication with WPA2 encryption • Integrated rules-based stateful firewall • Station-to-station traffic blocking |
| Management | • Element management • RF management | • Common local and centralized management • Real-time RF coverage monitoring and control • Automatic channel selection • Location-based asset identification • Leverage existing management tools (syslog, SNMP, etc.) |
| Resiliency | • Hardware resiliency • Software resiliency • High availability | • Multiple radios with 50% coverage overlap • Dual Gigabit Ethernet uplinks • Dual software images with rollback • Configuration auditing and backup • Active service health check with self correction |
| Enclosures | • Flexible, secure installation options | • Securable, drop ceiling/surface mount indoor enclosures • Environmentally controlled outdoor enclosures |
| Power | • Flexible powering options | • AC and Power over Ethernet/Gigabit Ethernet options • Redundant power |
| Upgradeability | • Multi-generational hardware platform • Future proof for 802.11n | • Modular hardware and software for in-field upgrades • Hardware headroom for future requirements, performance boost • Design for 802.11n today – expandable to Cellular, Zigbee |
Application Priority by Category
| Criteria | Requirements | |
|---|---|---|
| Internet Applications | • Calculated Connections per Second (CPS) • Calculated Concurrent Connections (CC) | • Achieve desired CPS and CC • 100K average TCP throughput for web surfing and email • 500K average TCP throughput for file downloads |
| Video over Wi-Fi | • Measured # video streams at a given Media Deliver Index (MDI) or Video Quality Metric (VQM) | • High real-time throughput º Internet streaming ~1 Mbps UDP per stream º SDTV ~3 Mbps UDP per stream • Low packet loss • Seamless wireless-wired QoS • Low jitter |
| Voice over Wi-Fi | • Calculated Busy Hour Call Attempts (BHCA) • Calculated Busy Hour Call Completion (BHCC) at an acceptable Mean Opinion Score (MOS) | • Achieve desired BHCA/BHCC with MOS > 3.8 • Fast roaming – sub 60 msec handoff • Seamless wireless-wired QoS • Low latency and jitter |
Services
| Criteria | Requirements | |
|---|---|---|
| Planning | • Real world (non-predictive) site surveys | • Site surveys conducted with actual product • Test both signal (RSSI) and data throughput • Coverage guarantee |
| Installation | • Simplified installation | • "3" clicks or less to install a device • Automatic channel assignment at boot-up with zero interference • Quick physical install that can be done when school is in session |
| Verification | • Post-installation and verification | • Re-run site survey with throughput testing to verify design |