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Launch Requirements - PSCR

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Introduction<br />

Public Safety Broadband<br />

! User-­‐defined fields for activity reporting <br />

! Data sharing policies <br />

1.2.2 Public Safety Grade to be Defined<br />

Various requirements in this document refer to public safety grade (PSG). While the meaning of this <br />

terminology was not defined at the time of this document’s completion, the NPSTC Broadband Working <br />

Group (BBWG) plans to define the terminology as quickly as possible, for use by FirstNet in system <br />

design. For now, the intent of the PSG terminology is to convey the need for design choices that support <br />

a greater overall network reliability and resiliency to network disruptions compared to commercial <br />

networks. The goal is for the NPSBN to be equivalent to public safety land mobile radio (LMR) systems <br />

that support law, fire, and emergency medical service (EMS) operations and are commonly referred to <br />

as “mission-­‐critical systems.” <br />

Reliability is achieved in public safety LMR systems through equipment redundancy and minimizing <br />

single points of failures. System operators stock spare parts and, in some cases, transportable backup <br />

systems to restore system failures that do occur. Reliability is achieved through careful system design <br />

and must be considered at the earliest stages of system design. <br />

Resiliency is achieved through careful considerations of local environmental factors and how events <br />

such as earthquakes, wildland fires, hurricanes, floods, lightning, ice, tornadoes, and even vermin can <br />

disrupt or damage the NPSBN network. Consideration to common atmospheric conditions such as <br />

extreme temperature shifts, high/low humidity, or even salty air affects resiliency. One failure common <br />

to all types of natural disasters is the commercial power service. Public safety LMR systems incorporate <br />

both battery and backup generators at the radio sites to insure reliable power for the equipment. The <br />

size and type of batteries and generators vary from region-­‐to-­‐region depending on a number of factors. <br />

Each disaster type requires different consideration for what is required to ensure network resiliency. <br />

Resiliency is designed into the network starting at the earliest stages of system design. <br />

1.3 Nomenclature for Preliminary High-Level <strong>Launch</strong> <strong>Requirements</strong><br />

<strong>Requirements</strong> in this document are enumerated in tables and informative text is provided outside of the <br />

tables. The next table provides an example. A description of each column follows. <br />

# Requirement<br />

1<br />

2<br />

3<br />

The requirements tables include the following columns: <br />

2 <strong>Launch</strong> Statement of <strong>Requirements</strong><br />

for FirstNet Consideration, December 2012

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