Description of Research Project

0296-EX-ST-2018 Text Documents

CCO Fiberlink, LLC

2018-03-06ELS_205952

File No. 0296-EX-ST-2018 DESCRIPTION OF RESEARCH PROJECT Pursuant to Sections 5.3(j) and Section 5.61 of the Federal Communications Commission’s rules, 47 C.F.R. §§ 5.3(j) and 5.61, CCO Fiberlink, LLC (“Charter”), a limited liability company and subsidiary of Charter Communications, Inc., seeks Special Temporary Authority (“STA”) for 180 days, beginning March 23, 2018, to test and evaluate coverage, capacity, and propagation characteristics in the 3550-3700 MHz band for fixed locations with multiple devices. The proposed operations will advance Charter’s understanding of technology and network potential in the 3550-3700 MHz band and will advance the potential deployment of fixed wireless services. Location of Testing Charter will conduct outdoor fixed testing within a radius of 15 km from the specified fixed location in Lexington, Kentucky (38° 6' 6.102'' N, 84° 28' 51.3588'' W). Description of Testing Charter will deploy the experimental fixed base station antennas on an existing six-story building rooftop, or on a portable mast immediately adjacent to the six-story building, and will test the radio link between each prototype base station’s antenna and multiple end user antennas and equipment sequentially and simultaneously. The antennas are three sector directional antennas with a beam width of 65° and horizontal orientation of 300°, 10°, and 80°. There is no vertical orientation. End user antennas will be mounted on portable masts placed at fixed locations within the test area as well as selected fixed rooftop locations on single family homes. The testing will not employ more than twenty units of end user antennas and equipment. Charter will evaluate propagation characteristics, conduct connectivity and throughput testing in the vicinity of each device, and assess individual performance of each end user equipment. Radio Equipment Description For the testing, Charter will use nineteen different models of fixed equipment. The technical information below provides the greatest bandwidth and power levels that will be used for each piece of prototype equipment. Aggregated bandwidth per sector will be up to 80 MHz. 1

File No. 0296-EX-ST-2018 Equipment Category1 Fixed Tx EIRP ERP Mean or Frequency Emission Signal Modulation or Power (dBm) (watts) Peak Tolerance Designator Format(s) mobile mW Power (%) Prototype 1 B Fixed 8000 56.0 242.66 Peak +/- 0.0005 80M0W9W Digital, 256 QAM Prototype 2 B Fixed 37,767 54.8 184.08 Peak +/- 0.0005 60M0W9W Digital, 256 QAM Prototype 3 B Fixed 251 40.0 6.10 Peak +/- 0.0005 10M0W8W OTFS2 Prototype 4 B Fixed 1000 43.0 12.16 Mean +/- 0.000001 20M0D7D 256 QAM/64 QAM/16 QAM Prototype 5 B Fixed 1000 43.0 12.16 Mean +/- 0.000001 20M0D7D 256 QAM/64 QAM/16 QAM Prototype 6 B Fixed 1000 43.0 12.16 Mean +/- 0.000001 20M0D7D 256 QAM/64 QAM/16 QAM Prototype 7 B Fixed 1000 37.0 3.06 Mean +/- 0.000005 20M0W7W 64 QAM, 16 QAM, QPSK, BPSK Prototype 8 B Fixed 2000 47.0 30.55 Mean +/- 0.000005 20M0W9W 256QAM/64QAM/16 QAM/QPSK Prototype 9 B Fixed 2000 47.0 30.55 Mean +/- 0.000005 20M0W9W 256QAM/64QAM/16 QAM/QPSK Prototype 10 B Fixed 2000 50.0 60.95 Mean +/- 0.000005 20M0F9W 256QAM/64QAM/16 QAM/QPSK Prototype 11 B Fixed 251 33.0 1.22 Mean +/- 0.000001 20M0W7W 64QAM/16QAM/ QPSK Prototype 12 B Fixed 199 35.0 1.93 Peak +/- 0.000001 20M0W7W 64QAM/16QAM/ QPSK Prototype 13 A Fixed 199 25.5 0.22 Peak +/- 0.000001 20M0W7W 64QAM/16QAM/ QPSK Prototype 14 B Fixed 316 47 30.6 Mean +/- 0.000001 20M0W7D 64QAM/16QAM Prototype 15 B Fixed 200 38 3.9 Mean +/- 0.000001 20M0W7D 64QAM/16QAM Prototype 16 B Fixed 200 33 1.2 Mean +/- 0.00005 80M0W9W 256QAM, 64QAM Prototype 17 B Fixed 200 23 0.12 Mean +/- 0.00005 40M0W9W 64 QAM Prototype 18 B Fixed 3160 50 61 Peak +/- 0.000005 20M0W9W 256QAM Prototype 19 B Fixed 6310 53 122 Peak +/- 0.000005 40M0W9W 256QAM Protection Against Interference Charter has taken a number of steps to protect against interference. In particular, the base station location was chosen specifically to avoid risk of physical interference. The base station site will likely be atop an existing structure, and the equipment will not extend more than 6 meters above that structure. If the rooftop is not available, the base station antennas will be mounted on a portable mast immediately adjacent to the six-story structure, and will be raised to a maximum 1 Category A and B radios are defined in Sections 96.3 and 96.41 of the FCC’s rules. See 47 C.F.R. §§ 96.3 and 96.41. 2 “Orthogonal Time Frequency and Space” is a proprietary vendor signal modulation format. 2

File No. 0296-EX-ST-2018 height of 15 meters. The nearest airport is over 8 km away, and is a heliport atop a similar six- story structure, providing no risk of aviation interference. Charter has also selected individual “end user device” test locations to mitigate any risk of physical interference. Several locations will be on rooftops, and the equipment will not extend more than 6 meters above those structures. Some end user devices may be mounted on portable masts, but would not extend more than 6 meters above ground level. Charter understands it must accept RF interference from any federal and non-federal incumbent users of this band and that all Charter operations will be on a secondary basis. With regard to existing users, Charter has confirmed there are no protected Fixed Satellite Service (“FSS”) earth stations operating in the 3550-3700 MHz band in the areas in which Charter seeks to conduct testing. Charter is aware of the NorthStar Studios 3625-4200 MHz FSS earth station (call sign E970010) in Nashville, TN (181 miles SW) and has verified all intended test operations are outside its coordination zone. All operations are well clear of the NTIA coastal exclusion zones, and a minimum of 439 miles from any of the three CBRS-protected Navy land-based RADAR sites. Charter also identified all grandfathered 3650-3700 MHz “NN” Wireless Broadband Licensees with registered locations within 30 km of the requested testing areas and will coordinate individually to avoid impacting their existing operations. Finally, as transmit levels of the proposed radios comply with approved CBRS band operations, and will be operated sequentially, Charter expects limited RF propagation distances as well as limited and localized aggregative contribution to the RF noise floor. Restrictions on Operation Charter does not seek authority to perform a market study under the requested license. Contact Information Point of contact for FCC licensing issues: Colleen King Vice President, Regulatory Affairs (202) 621-1921 colleen.king@charter.com Point of contact for questions about testing operations: Greg McLaughlin Sr. Director of Wireless Operations, R&D (720) 482-4290 greg.mclaughlin@charter.com 3

File No. 0296-EX-ST-2018 The following individual will be available 24/7 during all testing and has authority and ability to immediately cease all operations: Rajeev Aggarwal, Principal Engineer 913-609-5056 Rajeev.Aggarwal@charter.com 4


Document Created: 2018-03-06 16:10:13
Document Modified: 2018-03-06 16:10:13
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC