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Interoperability Analysis for DIGB 1

Interoperability Analysis for DIGB 1

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Interoperability Analysis for DIGB 1

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  1. Interoperability Analysis for DIGB 1 By Scott Grimmett, BSEE Scott Grimmett, BSEE

  2. Scope of Work • Three documented courses of actions (COA) pertaining to public safety voice interoperability communications • Between each of the five Northern Idaho Counties and the Tribes • Kootenai • Shoshone • Bonner • Boundary • Benewah • Kootenai Tribe • Coeur d’Alene Tribe Scott Grimmett, BSEE

  3. Data Gathering • Data gathering provided by each county and tribes • Data was limited • Most detailed data came from the agencies on the Kootenai and Bonner County border and the Kootenai and Benewah County border. Scott Grimmett, BSEE

  4. Deliverables • COA 1 will encompass interoperability between all five northern counties • COA 2 will provide one detailed recommendation for interoperability between Kootenai and Bonner Counties • COA 3 will provide one detailed recommendation for interoperability between Kootenai and Benewah Counties Scott Grimmett, BSEE

  5. COA 1 Interoperability Analysis for DIGB 1 Scott Grimmett, BSEE

  6. Goal • Long term comprehensive plan for interoperability between the five northern counties, Benewah, Bonner, Boundary, Kootenai, Shoshone, the Kootenai Tribe and the Coeur d’Alene tribe. • 700 MHz P25 radio system and VHF conventional radio system Scott Grimmett, BSEE

  7. 700 MHz P25 system • Two channels or talkgroups located at each 700 MHz site • One channel or talkgroup at each site will be allocated to Fire/EMS and the other to Law Enforcement • Where trunking systems are not available, two 700 MHz conventional repeaters will be needed • ISSI connection capable of interfacing to the Statewide 700 MHz system Scott Grimmett, BSEE

  8. VHF System • Two channels • One channel will be assigned for fire and EMS, and the other channel will be used for law enforcement • Each channel will require a VHF P25 capable repeater located at every VHF site defined in this study Scott Grimmett, BSEE

  9. Linking • VHF Fire/EMS channel permanently connected to the 700 MHz Fire/EMS channel or talkgroup • VHF Law channel permanently connected to the 700 MHz Law channel or talkgroup • VHF and 700 MHz repeater systems should be connected through a P25 ISSI • All sites connected Scott Grimmett, BSEE

  10. VHF Fire/EMS Channel VHF Law Channel 700 MHz Fire/EMS Talkgroup 700 MHz Law Talkgroup Communications Site 700 MHz Users VHF Users Interoperability Communication Site Scott Grimmett, BSEE

  11. Communications Site Communications Site VHF Fire/EMS Channel VHF Law Channel VHF Fire/EMS Channel VHF Law Channel 700 MHz Fire/EMS Talkgroup 700 MHz Law Talkgroup 700 MHz Fire/EMS Talkgroup 700 MHz Law Talkgroup Microwave Link Microwave Linked Interoperability Communication Sites Scott Grimmett, BSEE

  12. Simulcast Repeaters All repeaters share the same input and output frequencies. All mobiles can talk to each other any where in the system. Mobiles do not need to change frequencies (channel on the radio) when moving between repeaters Repeater A Range Repeater B Range Fo Fi Fi Fo Microwave Repeater B Repeater A Scott Grimmett, BSEE

  13. P25 Interfaces • Common Air Interface (CAI) • Subscriber Data Peripheral Interface • Fixed Station Subsystem Interface (FSSI) • Console Subsystem Interface (CSSI) • Inter-RF Subsystem Interface (ISSI) • Network Management Interface • Data Network Interface • Telephone Interconnect Interface Scott Grimmett, BSEE

  14. Inter-RF Subsystem Interface (ISSI) P25 RF Subsystem P25 RF Subsystem • A non-proprietary interface that enables RF subsystems built by different manufacturers to be connected together into wide area networks. ISSI ISSI ISSI P25 RF Subsystem Scott Grimmett, BSEE

  15. P25 ISSI • Non-proprietary interface • IP based • Interconnects radio systems built by different manufacturers • Connects systems operating in different frequency bands • Creates wide area radio networks for extended coverage area for roaming subscriber units • Provides voice and data services, end-to-end encryption and roaming. Scott Grimmett, BSEE

  16. Manufacturer X P25 System A Manufacturer Y P25 System B MasterSite MasterSite TG A100 TG A100 TG B150 TG B150 Unit A2 Unit A1 Unit B1 Unit B2 No ISSI – No interoperable communications between systems Scott Grimmett, BSEE

  17. ISSI – Interoperable communications between systems Manufacturer X P25 System A Manufacturer Y P25 System B ISSI MasterSite MasterSite TG A100 TG A100 TG B150 TG B150 Unit A2 Unit A1 Unit B1 Unit B2 Scott Grimmett, BSEE

  18. ISSI Roaming– Mode change required between systems Manufacturer X P25 System A Manufacturer Y P25 System B ISSI MasterSite MasterSite TG B150 TG A100 TG B150 TG B150 Mode Change Unit A2 Unit A1 Unit B1 Unit B2 Scott Grimmett, BSEE

  19. Why 700 • It will continue to grow as the public safety radio system • Recommended by the Idaho Statewide Interoperability Executive Council • Kootenai County • Spokane County ISP and other state agencies • Sandpoint • The Coeur d’Alene Tribe plans to migrate 700 MHz Scott Grimmett, BSEE

  20. Why VHF • North Idaho terrain presents propagation challenges for 700 MHz • VHF radio signals bend and follow terrain better than do 700 MHz signals • Some counties do not plan to use 700 MHz systems • The Forest Service, BLM, and Idaho Department of Lands plan to stay with VHF frequencies Scott Grimmett, BSEE

  21. 700 MHz Advantages/Disadvantages • Advantages • Spectrum dedicated to public safety • Less interference from other users • Lots of spectrum available • TX and RX frequency spacing is good • Good building penetration • Lower Noise Floor • Disadvantages • Signal does not travel as far • Signal does not bend over mountains • Expensive • More sites required to get same coverage as VHF Scott Grimmett, BSEE

  22. VHF Advantages/Disadvantages • Advantages • Signal travels further • Signal bends over mountains better • Reasonability priced equipment • Reasonable building penetration • Disadvantages • The spectrum is crowded • Hard to get new frequencies • Inference with other users • TX and RX frequency spacing is close Scott Grimmett, BSEE

  23. Why Microwave • To communicate across the 5 Northern Counties requires connectivity between radio sites • The majority of the sites are on remote mountain tops • It is not practical to obtain fiber or T1 lines these site locations Scott Grimmett, BSEE

  24. Coverage Goals • 700 MHz P25 radio coverage • Interstate 90 corridor - 95% • US-95 corridor from the Canadian border to the northern border of Latah County - 95% • Population centers of the 5 northern counties – 95% • VHF coverage • 5 northern counties of Idaho - 95% Scott Grimmett, BSEE

  25. Coverage Assumptions • VHF • 50-watt mobile transceiver, with a 3dB gain, omni-directional antenna. The antenna height is 2M (6.6-foot). • Transmitter sites will conform to the height above average terrain curves that are in Part 90 of the FCC rules • No transmitter site will exceed 200 watts ERP • 700 MHz • 30-watt mobile transceiver, with a 3dB gain, omni-directional antenna. The antenna height is 2M (6.6-foot). • Microwave • Any one of the remote can to be destroyed by fire, natural disaster, or terrorism without interruption to the remainder of the system. Scott Grimmett, BSEE

  26. 700 MHz Sites • 1mi S SE of Border Mtn. • Dawson Ridge • Black Mtn. • Sundance Mtn. • Schweitzer Mtn. • 4.7Mi E of Priest River • 1.7Mi NW of Gold Mtn. • Canfield Mtn. • Mica Peak • Killarney Mtn. • Hoodoo Mtn. • Mason Butte • Goose Hump • Wardner Peak • Silverton • Lookout Pass • Tekoa Mtn. • St. Maries Court House Scott Grimmett, BSEE

  27. 700 MHz Coverage – 30 dB Scott Grimmett, BSEE

  28. Northern 700 MHz Coverage – 30 dB Scott Grimmett, BSEE

  29. Central 700 MHz Coverage – 30 dB Scott Grimmett, BSEE

  30. Sothern 700 MHz Coverage – 30 dB Scott Grimmett, BSEE

  31. VHF Sites • 1mi S SE of Border Mtn. • Dawson Ridge • Black Mtn. • Sundance Mtn. • Schweitzer Mtn. • 4.7Mi E of Priest River • 1.7Mi NW of Gold Mtn. • Canfield Mtn. • Mica Peak • Killarney Mtn. • Hoodoo Mtn. • Mason Butte • Goose Hump • Wardner Peak • Silverton • Lookout Pass • Tekoa Butte • St Joe Baldy • Bald Mtn. Scott Grimmett, BSEE

  32. VHF Coverage – 30 dB Scott Grimmett, BSEE

  33. Northern VHF Coverage – 30 dB Scott Grimmett, BSEE

  34. Central VHF Coverage – 30 dB Scott Grimmett, BSEE

  35. Northern VHF Coverage – 30 dB Scott Grimmett, BSEE

  36. Microwave Sites • 1mi S SE of Border Mtn. • Copeland uW Relay • Dawson Ridge • Black Mtn. • Sundance Mtn. • Schweitzer Mtn. • 4.7Mi E of Priest River • 1.7Mi NW of Gold Mtn. • Canfield Mtn. • Mica Peak • Killarney Mtn. • Hoodoo Mtn. • Mason Butte • Goose Hump • Wardner Peak • Silverton • Lookout Pass • Tekoa Mtn. • St Joe Baldy • Bald Mtn. • St. Maries Court House Scott Grimmett, BSEE

  37. Microwave Links Scott Grimmett, BSEE

  38. COA 2 and 3 • No changes to the current VHF, UHF, and 700 MHz systems • Based on feedback received from the recent user surveys • May be other areas where interoperable communication may remain an unidentified problem due to limited feedback Scott Grimmett, BSEE

  39. Scott Grimmett, BSEE

  40. COA 2 Interoperability Analysis for DIGB 1 Scott Grimmett, BSEE

  41. Course of Action 2: Bonner County – Kootenai County Border • Regular Mutual Aide • Kootenai • Sprit Lake Fire • Timber Lake Fire • Northern Lakes Fire • Bonner • Sagle Fire • West Pend Oreille Fire Scott Grimmett, BSEE

  42. Assumed requirements • Each vehicle will carry only one two-way radio. • Mutual aid vehicles will move the mutual aid channel as soon as possible after being dispatched. • Equipment required to provide the mutual aid on a regular basis will be permanently installed. • All on-scene tactical communications will be facilitated through low-power cross-band vehicular repeaters installed in the command vehicles and larger fire assets. Scott Grimmett, BSEE

  43. Sagle Fire and West Pend Oreille Fire VHF provide aide to Spirit Lake Fire and Timber Lake Fire 700 MHz • Hoodoo Mountain VHF repeater to 700 MHz gateway • Little Blacktail VHF repeater to 700 MHz gateway • Create a Fire Operations South Talkgroup on the 700 MHz system - IK Fire Ops North • Kootenai County agencies use the 700 MHz talkgroup and Bonner County agencies use the VHF repeater for interoperability communications. Scott Grimmett, BSEE

  44. Hoodoo VHF repeater gateway to Kootenai 700 MHz talkgroup Scott Grimmett, BSEE

  45. Little Blacktail VHF Interoperability Repeater Kootenai 700 MHz System FIRE OPS North Talkgroup Duplexer VHF Repeater Gateway Controller 700 MHz P25 Mobile Blacktail VHF repeater gateway to Kootenai 700 MHz talkgroup Scott Grimmett, BSEE

  46. VHF coverage from Hoodoo and Little Blacktail – 20 dB Scott Grimmett, BSEE

  47. VHF coverage from Hoodoo and Little Blacktail – 30 dB Scott Grimmett, BSEE

  48. Sprit Lake, Timber Lake and Northern Lake Fire 700 MHz aide to Sagle Fire and West Pend Oreille Fire VHF • 700 MHz to VHF gateway in Sandpoint • 800 MHz repeater to VHF gateway on Little Blacktail • 800 MHz repeater to VHF gateway at Stimpson Lumber • Create a Fire Operations South Talkgroup on the 700 MHz system - 7B-Fire-Ops-South • Kootenai County Agencies use the 700 MHz talkgroup and 800 MHz repeater while Bonner County agencies use the VHF repeater for interoperability communications. Scott Grimmett, BSEE

  49. Bonner VHF Fire Repeater on Baldy Kootenai 700 MHz SystemBonner Fire Operations Talkgroup VHF Mobile Gateway Controller 700 MHz P25 Mobile Bonner VHF to Kootenai 700 MHz Gateway Scott Grimmett, BSEE

  50. 800 MHz Repeater on Little Blacktail Bonner VHF Fire Repeater on Baldy Duplexer 800 MHz Repeater Gateway Controller VHF Mobile Blacktail 800 MHz Repeater to Bonner VHF Gateway Scott Grimmett, BSEE