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Agenda

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Agenda

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    2. Radio Basics Conventional Versus Trunked Radio Frequency Spectrum - Project 25 Phase I Versus Phase II Trunked System Components (What makes up a system?) Wide-Area Trunking Systems Vendor Proposals Overview Vendor Demonstrations Overview Evaluation Form Overview Agenda

    3. Example of Conventional vs. Trunked Radio System Currently Police and Fire each have their own, separate bank of conventional channels. Now lets look at these channels on Sunday at 2:00 AM. Police channels get overloaded in this peak activity time. Meanwhile there are Fire Channels “available” that are not used by those Police who are waiting.

    4. Conventional Radio System (Like HPD and HFD have today) No inherent redundancy for channel failure

    5. Trunked Radio System Trunked radio systems were originally developed to provide more efficient use of available radio frequencies and to support a greater number of radio users than conventional systems equipped with the same number of frequencies. Trunked systems are computer driven radio networks that can provide a more complete set of operational features & functions than conventional systems

    6. Example of Conventional vs. Trunked Radio System Now lets examine that same Sunday at 2:00 AM scenario, this time in a trunked system . . . Police and Fire share a “pool” of channels A “Control Channel” manages trunked calls The Fire Channels that were available but not used during the Police peak activity time may now be used.

    7. How Trunked Systems Work Computer regulates channel usage

    8. Example of Talkgroups in a Trunking System

    9. Trunking System in Idle Mode

    10. A Talkgroup Call Request

    11. Repeater Designated as Voice Channel

    12. Communication Through Assigned Voice Channel

    13. Request for Access When All Channels Are Busy

    14. User Placed in New User Queue

    15. Voice Channel Assignment

    16. Trunked System Features User validation before system access Push-To-Talk Identification for all users Subscriber Access Control (limits who can get on the system) Priority Access (Most important calls given priority) Emergency Signaling (Emergency button on radios) Talkgroup Scan Busy Queuing Larger systems can handle very heavy traffic loads

    17. Frequency Spectrum

    18. Frequency Spectrum

    19. FCC “Squeeze In More Talkpaths”

    20. 25 KHz Channels from the Past

    21. 12.5 KHz Channels from Project 25 Phase I

    22. 12.5 KHz Channels from Project 25 Phase II

    23. Trunked System Components Now lets look at the key components that make up a modern trunked radio system Repeater Sites (these provide radio coverage) Wide-Area System (more than one repeater site) Master Control Point (controls & manages the network) Site Connectivity (links between the sites, control point, & dispatch) User Radios (hand held radios & mobile (vehicle) radios)

    24. Basic Trunked Repeater Site

    25. One repeater site provides in-building coverage for approximately 4 – 6 miles. For the City of Houston’s service area, that translates to 40+ sites ! ! Basic Trunked Repeater Site

    26. Wide-Area Systems

    27. Wide-Area Systems

    28. Wide-Area Systems

    29. Wide-Area Systems: Simulcast

    30. Wide-Area Systems - Simulcast

    31. Simulcast Subsystems

    32. Simulcast Subsystems

    33. Simulcast Subsystems

    34. Lets Look at Whole System

    35. How About Radio Coverage? What are the key drivers? Service area and types of coverage – were defined by the City’s project team including Police, Fire, PW&E and HAS Mobile coverage (vehicle radios) Portable radios on-street Portable radios in 10 dB buildings (light buildings, typically residential) Portable radios in 20 dB buildings (typically medium to heavy buildings) Portable radios in 30 dB buildings (typically heavier buildings, but not all heavy buildings) “Required Buildings” – a list of 147 buildings developed by the City, in which the Vendor must provide coverage Downtown tunnel system Medical Center tunnel system

    36. How About Radio Coverage? What are the key drivers? Coverage reliability – Selected 95% Area Reliability Delivered audio quality (sound quality) – Selected TIA DAQ 3.4 as the baseline minimum Location of portable radio on the user – radio at belt level with antenna on the radio Belt clip carrying device for the portable radio Coverage with the radios stationary and moving Coverage acceptance testing

    37. How About Radio Coverage? The RFP requires 95% coverage of the City’s service area with a Delivered Audio Quality (DAQ) of 3.4, based on the following scale.

    38. Level 5 Interoperability The City expects to have Level 5 Interoperability, standards based shared systems with all of the adjacent 700 / 800 MHz radio systems in the area, as defined by the SAFECOM Interoperability Continuum on the next slide.

    39. SAFECOM Interoperability Continuum

    40. How About Interoperability? There are currently two separate Harris County Regional Radio Systems in place today: 1. A newer ASTRO 25 system – platform for the future 2. An older SmartZone 4.1 system - has most system users Successful proposers will need to provide solutions to interoperate with both of these systems

    41. Vendor Demos Three days set aside for “Demonstrations and Discussions” Locations to be identified by Vendors Tyco: week of March 10-14 Motorola: week of March 17-21

    42. Vendor Demos Two areas to be set up Area for or evaluation committee, technical workgroup, strategic purchasing, and RCC to interact with Vendor Area for hands-on evaluation of dispatch consoles and subscriber equipment City will stream a cross-section of City users and staff through the hands-on area over the three days

    43. Vendor Demos Outline City Team introductions and guidance for the session Introduction of Vendor’s presentation team Vendor presentation of session agenda Brief overview of Proposer’s company (15 minutes) Overview and discussion of Proposed Primary System Infrastructure Offering (incorporate demonstration of equipment as appropriate!) Type of system and system configuration Rationale for the selection of proposed repeater sites Rationale for proposed system capacity Ability of Public Safety and Public Works to provide mutual backup capability System expansion capability for future growth Guaranteed radio coverage performance in all categories - including but not limited to the following: Audio Quality Demonstrations for P25 Phase I and Phase II

    44. Vendor Demos Outline Failure mode analysis (follow Appendix A to this outline) Trunked System Features (follow Appendix B to this outline) Voice Encryption Discussion Microwave System Configuration and Connectivity Network management system Interoperability with external entities in the Houston area Proposed Dispatch Console Systems Infrastructure implementation and optimization Site Development Infrastructure Maintenance (discuss the team that will be involved in this aspect of the project) Corrective Maintenance Alerting and Response Plan (before and after warranty)

    45. Vendor Demos Outline Presentation and Demonstration of Proposed Primary System Subscriber Equipment (incorporate demonstration of equipment as indicated below) Proposed Mobile Radios Proposed Portable Radios and Accessories Status of Proposed Radios Proposed battery technology Proposed System Pricing for Primary Offering Discussion of Alternate Offerings Vendor Specific Topics and Questions to be added at a later date. System, Console, and Subscriber Equipment demos for City Staff Close-Out of Vendor Demonstrations

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