Report - City of Tustin

Report - City of Tustin Report - City of Tustin

09.10.2014 Views

TMobile West Corporation Proposed Wireless Communications Site in the City of Tustin Subject Reference 113 5 Pioneer Rd Tustin CA 927 TMobile Reference LA33842D Cedar Grove Park Introduction The accompanying information is a general analysis prepared by TMobile s Engineering Department in reference to its proposed wireless communications site installation in Cedar Grove Park in the City of Tustin It includes information regarding TMobile cell sites and how various Engineering Design constraints play a part in effecting the performance ofTMobile existing network This information has been prepared by TMobile to briefly explain its alternate candidate uialysis and the reasons why the current proposed location at the Cedar Grave Park is still the best option to meet the design requirements and future network performance Background TMobile was issued a wireless license by the FCC to build out a wireless communications network to provide its customers with the best possible network performance The network performance goals include providing the best call quality the lowest number ofblocked calls easy access and continuousdrop free connections TMobile s network as for any other cell phone wireless provider requires numerous sites to provide customers with suitable signal strength to deliver voice and data services These sites are typically built on existing buildings lattice towers and monopoles in order to provide a grid ofsites that provide seamless coverage over an area The sites are built with a combination of antennas and electronic equipment The various electronic equipment includes radio receivers and transmitters that provide channels for customers to use for voice or data communication Sites being added to an existing network fall iota one of two categories Infill or Capacity Infill sites are required for areas that have poor signal strength or no coverage at all Anew site will reduce dropped calls reduce interference and provide improved indoor coverage Some infill sites are needed because it has been deternuned that the customers are using their phones indoors and are therefore consideredin building infill sites Capacity sites are typically needed in areas where there is a high cellphone usagead an additional site is required to carry more call traffic Capacity sites not only provide more radio capacity but also improve the performance of the area because they are offloading adjacent sites

Site Selection The proposed siteTMobile LA338 12D Cedar Grove Perk is considered an infill site that will improve coverage to the dense residential neighborhood surrounding Jamboree Rd and Tustin Ranch Rd in the City ofTustin This area has been identified as one with very low perforn ance in which existing sites cannot provide good signal strength due to the terrain elevation changes hills physical obstructions and dense vegetation A new cell site will improve indoor coverage in an area that is presently served at best with very weak signal strength levels that result in a high number of dropped calls excessive interference and at times the inability to connect a call TMobile Engineering guidelines described below used to deternne the best candidate for this area are 1 Site Visit Visual assessment of the area to search for viable candidates based on location structure height topography lease area etc 2 Propagation AnalysisTMobile uses a prediction tool known as Asset to predict the expected coverage of the new cell site and how it will perform with the existing the area sites in 3 Drive Test Data TMobile uses real time data collected from the field to determine the need for an additional site Design Limitations Generally cell site coverage is affected by differentfactors described below Cell Site location in reference of coverage objective Cell Site antenna location and height available A very short site provides a very limited coverage pattern That s the case for existing TMobile site LA02317A Salvation Army Terrain elevations A very tall site causes interference over other existing cell sites Dense trees foliage or vegetation Physical obstructions buildings vertical elements etc Height Justification The proposed new facility at Cedar Grove Park has been analyzed using the computerized prediction tool known as Asset and has been found to have a good performance when interacting with existing TMobile sites at the proposed height of 60 feet Top of the Antenna Wireless facilities should be tall enough to clear surrounding buildings and tree cover A line of sight to the coverage objective is always a top priority when designing a new cell site Antennas always point to the horizon and due to fact that low power transmitters are used on this type of facilities any obstruction would disrupt coverage pattern and result

TMobile West Corporation<br />

Proposed Wireless Communications Site in the <strong>City</strong> <strong>of</strong> <strong>Tustin</strong><br />

Subject<br />

Reference 113 5 Pioneer Rd <strong>Tustin</strong> CA 927<br />

TMobile Reference LA33842D Cedar Grove Park<br />

Introduction<br />

The accompanying information is a general analysis prepared by TMobile s Engineering<br />

Department in reference to its proposed wireless communications site installation in<br />

Cedar Grove Park in the <strong>City</strong> <strong>of</strong> <strong>Tustin</strong> It includes information regarding TMobile cell<br />

sites and how various Engineering Design constraints play a part in effecting the<br />

performance <strong>of</strong>TMobile existing network<br />

This information has been prepared by TMobile to briefly explain its alternate candidate<br />

uialysis and the reasons why the current<br />

proposed location at the Cedar Grave Park is<br />

still the best option to meet the design requirements and future network performance<br />

Background<br />

TMobile was issued a wireless license by the FCC to build out a wireless<br />

communications network to<br />

provide its customers with the best possible network<br />

performance The network performance goals include providing the best call quality the<br />

lowest number <strong>of</strong>blocked calls easy access and continuousdrop free connections<br />

TMobile s network as for any other cell phone wireless provider requires numerous<br />

sites to<br />

provide customers with suitable signal strength to deliver voice and data services<br />

These sites are typically built on existing buildings lattice towers and monopoles in<br />

order to provide a grid <strong>of</strong>sites that provide seamless coverage over an area<br />

The sites are built with a combination <strong>of</strong> antennas and electronic equipment The<br />

various<br />

electronic equipment includes radio receivers and transmitters that provide<br />

channels for customers to use for voice or data communication<br />

Sites being added to an existing network fall iota one <strong>of</strong> two categories<br />

Infill or<br />

Capacity Infill sites are required for areas that have poor signal strength or no coverage<br />

at all Anew site will reduce dropped calls reduce interference and provide improved<br />

indoor coverage Some infill sites are needed because it has been deternuned that the<br />

customers are using their phones indoors and are therefore consideredin building infill<br />

sites<br />

Capacity sites are typically needed in areas where there is a high cellphone usagead an<br />

additional site is required to carry more call traffic Capacity sites not only provide more<br />

radio capacity but also improve the performance <strong>of</strong> the area because they are <strong>of</strong>floading<br />

adjacent sites

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