Description of Research Project

1267-EX-ST-2017 Text Documents

CCO Fiberlink, LLC

2017-09-15ELS_198393

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 September 30, 2017, to test and evaluate coverage, capacity, and propagation characteristics in the 3550-3700 MHz band. 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 8 km from the specified fixed locations in each of Bakersfield, California; Coldwater, Michigan; and Charlotte, North Carolina. Description of Testing Charter will deploy the experimental fixed antennas on existing structures, and will test the radio link between each base station antenna and another end user antenna sequentially on a portable mast placed at fixed locations within the test area. Charter will evaluate propagation characteristics, conduct connectivity and throughput testing in the vicinity of each device, and assess individual performance of each vendor’s equipment. Radio Equipment Description For the testing, Charter will use 17 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. Tx Frequency Fixed or EIRP ERP Mean or Emission Signal Modulation Equipment Category1 Power Tolerance mobile (dBm) (watts) Peak Power Designator Format(s) (mW) +/- (%) Prototype 1 B Fixed 8000 56.0 242.7 Peak 0.0005 80M0W9W Digital, 256 QAM Prototype 2 B Fixed 37767 54.8 184.1 Peak 0.0005 60M0W9W Digital, 256 QAM Prototype 3 B Fixed 251 40.0 6.1 Peak 0.0005 10M0W8W OTFS2 256 QAM, 64 Prototype 4 B Fixed 1000 43.0 12.2 Mean 0.000001 20M0D7D QAM, 16 QAM 256 QAM, 64 Prototype 5 B Fixed 1000 43.0 12.2 Mean 0.000001 20M0D7D QAM, 16 QAM 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. 1

256 QAM, 64 Prototype 6 B Fixed 1000 43.0 12.2 Mean 0.000001 20M0D7D QAM, 16 QAM 64 QAM, 16 QAM, Prototype 7 B Fixed 1000 37.0 3.1 Mean 0.000005 20M0W7W QPSK, BPSK 256QAM, 64QAM, Prototype 8 B Fixed 2000 47.0 30.6 Mean 0.000005 20M0W9W 16QAM, QPSK 256QAM, 64QAM, Prototype 9 B Fixed 2000 47.0 30.6 Mean 0.000005 20M0W9W 16QAM, QPSK 256QAM, 64QAM, Prototype 10 B Fixed 2000 50.0 61.0 Mean 0.000005 20M0F9W 16QAM, QPSK 64QAM, 16QAM, Prototype 11 B Fixed 251 33.0 1.2 Mean 0.000001 20M0W7W QPSK 64QAM, 16QAM, Prototype 12 B Fixed 199 35.0 1.9 Peak 0.000001 20M0W7W QPSK 64QAM, 16QAM, Prototype 13 A Fixed 199 25.5 0.2 Peak 0.000001 20M0W7W 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 Protection Against Interference Charter has taken a number of steps to protect against interference. In particular, the three base station locations were chosen specifically to avoid risk of physical interference. All base station sites are located on existing towers, and the equipment will not extend above those structures. Individual “end user device” test locations were also selected specifically to avoid physical interference, which will be further lessened due to the limited duration of the test, as well as the continuous presence of test engineers at each location under test. Charter understands it must accept interference from any federal and non-federal incumbent users of the 3550-3700 MHz band and that all Charter operations will be on a secondary basis. With regard to existing users, Charter confirmed there are no Fixed Satellite Service (“FSS”) earth stations operating in the 3600-3650 MHz band in the areas in which Charter seeks to conduct testing. Charter is aware the requested Bakersfield location is within the coordination zone of four 3650-3700 MHz FSS stations in the Los Angeles area, and will coordinate directly, but expects the process to be greatly simplified by the presence of the San Gabriel mountain range between the test location and the FSS stations. The other two sites are not within a FSS coordination zone. Charter has 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 directly 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. 2

Restrictions on Operation Charter does not seek authority to perform a market study under the requested license and will retain control over the equipment in the testing at all times. 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 The following individual will be available 24/7 during all testing and has authority and ability to immediately cease all operations: PJ Dhillon Principal Engineer (631) 374-0748 parmjit.dhillon@charter.com 3


Document Created: 2017-09-15 14:41:29
Document Modified: 2017-09-15 14:41:29
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