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Home My WebLink AboutRF Justification Report - DISH Wireless dash wireless. RF Justification Report Site NYNYCO2239A RF Justification Report—Site NYNYCO2239A Contents 1 INTRODUCTION..............................................................................................................................3 2 WIRELESS TELECOMMUNICATIONS SYSTEMS ........................................................................3 3 PERFORMANCE METRICS............................................................................................................3 Coverage........................................................................................................................ 4 4 PERFORMANCE SOLUTIONS .......................................................................................................4 5 JUSTIFICATION FOR DISH SITE NYNYCO2339A.........................................................................5 6 HEIGHT JUSTIFICATION FOR DISH SITE NYNYCO2339A..........................................................6 61405 Main Road, Route 25,Southold, NY 11971; Dish Proposed Antenna Height=130 feet 2 RF Justification Report—Site NYNYCO2239A Introduction DISH is currently Building out Phase 1 of its 5G network. DISH had committed to the FCC that, by June 14, 2022, it will have deployed a core network and will offer 5G Broadband Service to at least 20% of the U.S,population and by June 14,2023,it will deploy a nationwide 5G network using DISH's spectrum with at least 70%of the U.S. population having access to download speeds equal to or greater than 35 Mbps. DISH submits this document in order to explain its standards and criteria for adequate signal strength, capacity, and reliability and how these standards and criteria are applicable to the Town of Southold. Wireless Telecommunications Systerns The FCC licenses a specific amount of RF spectrum to each wireless carrier and stipulates that each carrier efficiently use that spectrum to provide adequate wireless communication services to emergency services, businesses and individuals in the licensed areas. Wireless carriers achieve this mandate by continuously reusing the allocated radio frequencies throughout their licensed service area. This is accomplished by building small radio base stations, or cell sites, in a particular pattern (also known as a grid). The application of the grid concept affords a wireless carrier the ability to effectively and efficiently plan the reuse of radio frequencies. In order to provide effective coverage while maintaining an appropriate frequency reuse plan,the RF Design Engineer must perform a balancing test of all applicable technological variables. The primary variables that the engineer must balance/take into consideration are location, and the overall height of the cell sites. Too close and there is interference. Too far and calls are dropped. If a cell site is too high, it will have increased coverage but will cause interference throughout the rest of the wireless network, thereby significantly affecting network efficiency. If a cell site is too low, it will not provide effective coverage. Therefore, a properly designed wireless network design begins with strategically located cell sites. At each cell site there is a building, tower, water tank or other structure on which antennas are mounted. Performance tri The critical issue for DISH is the provision of"adequate and substantial" Radio Frequency(RF) service to serve its wireless customers. The wireless industry is governed by the Rules of the FCC. The FCC mandates in CFR 47, Parts §22.940 and §24.16 that each carrier must provide "substantial service" in its licensed service area, or risk having their license revoked. The FCC defines "substantial service" as service which is sound,favorable, and substantially above a level of mediocre service. 61405 Main Road, Route 25,Southold, NY 11971; Dish Proposed Antenna Height=130 feet 3 RF Justification Report—Site NYNYCO2239A Coverage A metric called Reference Signal Received Power ("RSRP") is used to specify the coverage capabilities of wireless networks. RSRP is the average received power measured across a 5G broadband channel. RSRP is measured in units of"decibels" referenced against 1 milliwatt, or dBm.The decibel is a logarithmic unit that allows ratios to be added or subtracted. The definition formula for decibels referenced against 1 milliwatt is dBm= 10 log (P/1mW) with P measured in milliwatts. So 10 mW would be 10clBm, 100 mW would be 20dBm, etc. The service boundary of a 5G site is defined using a RSRP equating to an acceptable receiver signal threshold. This value is derived from industry standards, 5G receive signal levels and quality and acceptable signal to noise ratios, along with statistically quantifiable variations in terrain. This threshold must also take into account additional losses associated with location of the mobile user. DISH must provide adequate service to all of its users. In order to account for users within buildings, additional margin must be added to RSRP so that adequate coverage exists inside. Industry and DISH engineering standards include an additional 10dB of margin to RSRP to be used for light suburban areas, with increasing values for higher density land usage.This additional margin is also required for in-vehicle service specifically to account for increased attenuation associated with the use of hands- free headsets,where the phone is typically placed on the seat or in the center console. An industry standard RF computer-aided engineering tool is used in the design of wireless networks. This tool is used to generate a plot of RSRP that shows underlying geographic data (highways, arterial roads, etc.). The propagation map is drawn showing the region where the RSRP equates to the minimally acceptable received signal level for adequate service, as measured at the device's receiver. The propagation map depicts the RSRP of the surrounding environment including the attenuation of in-building and in-vehicle use of service and visually demonstrates existing coverage patterns. Plots can also be generated to demonstrate proposed coverage patterns. With the preceding in mind, DISH' network standard for reliable 5G wireless service for highway and rural settings is -103.21 dBm RSRP. Network reliability and accessibility decreases dramatically for mobile devices operating in or traveling into RF environments outside (or weaker than) the -110.21 dBm RSRP coverage boundary for Low Frequency Band (600 MHz). Similarly, and as described above, signal level stronger than -98.21 dBm RSRP is used in areas where additional signal strength is needed to penetrate into buildings (e.g., city centers, dense residential, commercial and industrial type environs). Perforniance Solutions When the DISH Radio Frequency Engineer identifies coverage gaps in the system or sites that have or will reach data capacity exhaustion, they issue a "Search Ring." A search area is a geographical area located within the inadequately serviced area, and it is designed such that if a wireless telecommunications facility is located within the search area, and at an appropriate height, it will likely provide the required coverage. For the most part, locations outside of the search area will fail to provide adequate service to the cell. Due to technological constraints,there is limited flexibility as to 61405 Main Road, Route 25,Southold, NY 11971; Dish Proposed Antenna Height=130 feet 4 RF Justification Report—Site NYNYCO2239A where a new facility can be located, and still function properly.The goal of the search ring is to define the permissible location for placement of a cell site that will provide adequate service in the subject cell and work properly as part of the overall network. Justification for Dish Site Dish is requesting to build a site based upon a concealed pole located at 61405 Main Road, Route 25, Southold, NY 11971,with a height of 130'AGL in order to provide new coverage in the residential and commercial areas and to offer contiguous coverage between neighboring sites. In addition, this site will provide significant offload of neighboring congested cell sites alleviating call performance issues while providing a buffer for the future traffic growth. Dish will offer good in-building coverage in areas between Middle Road & Boisseau Avenue towards West and Albertson Lane towards East.The outdoor coverage from site extends up to Horton's Lane towards West and Bayshore Road/Conking Point towards East. The accompanying coverage prediction plots exhibit the need for requested height and location.The dark green colored shade shows "excellent (deep) indoor" coverage. The light green colored shade shows "good indoor" & "excellent (in-vehicle) outdoor" coverage. The orange colored shade shows "good outdoor" coverage. If there is no colored area, it means there is no coverage or very limited coverage. 6,b NYMYCO2241A ; J PVA �»r '"wb ro M �m � r NW4YCD22e0C r a �p NYNvcoaDOB ow Bane�� YY ColorV Iueyt Value 1'10.21 J -103.21 -103,21 F7"9"8-2-1-- -98,21 21.9$.21 20 61405 Main Road, Route 25,Southold, NY 11971; Dish Proposed Antenna Height=130 feet 5 RF Justification Report—Site NYNYCO2239A 6 Height Justification -for Dish Site Based on RF simulation results, the height of 130 feet AGL provides acceptable RF and population coverage in the area. If we lower the antenna height, a major portion of coverage gap and population will be left uncovered. "RF Coverage(%}" with different Antenna Heights Objective 160 feet 130 feet 110 feet 90 feet ! RF Cover ge M) µ 85 67 78.52 67.78 52.6 Coverage Gap(%) 100 14.33 3222 47.4 Gap (%)from 130 feet 33 -50 -121 "Subscribers Covered (Count)"-with different Antenna Heights Objective 160 feet 130 feet 110 feet 90 feet Subscribers(Count) 2814 2488 1865I -11 1258 1111 Subs Uncovered (Count) 3285 471 1420 2027 Gap (%)from 130 feet 41 •78 -154 61405 Main Road, Route 25,Southold, NY 11971; Dish Proposed Antenna Height=130 feet 6