Exhibit

1803-EX-ST-2017 Text Documents

AT&T; Services, Inc.

2017-12-19ELS_202484

Exhibit
Applicant seeks a Special Temporary Authorization (STA) of six (6) months to demonstrate the
functionality and capabilities of fifth generation wireless communication (“5G”) systems using
experimental equipment operating in the 3.5 GHz spectrum band.

The industry standards organization, 3rd Generation Partnership Project (“3GPP”), is developing
5G standards, which are expected for release beginning in 2018. 5G systems will utilize
advanced antenna technologies with beamforming and multiple in multiple out (“MIMO”)
technology, as well as more efficient coding and modulation schemes. These technologies are
expected to result in higher spectral efficiencies, reduce latency to 1-5 milliseconds, and enable
gigabyte per-second (Gbps) mobile and fixed broadband services, significantly faster than
today’s average 4G speeds using long term evolution (“LTE) connections.

The applicant’s 5G systems demonstrations will involve communications between fixed base
stations placed inside a building at
601 New Jersey Ave., NW Washington DC 20001. The building has concrete walls and
windows with coated glass as shown below. The 5G systems wireless link will be established
between the base station and mobile user equipment (“UE”) located in the same room or area as
the base station, at a distance of within approximately 12 meters of the base station. The base
station and UE will be operated within approximately 3 meters above floor level in the building.
The base station will connect to an Internet service provider, which will provide Internet access
for the purposes of 5G systems demonstrations using various applications and web servers. The
UEs can provide services to various devices through Wi-Fi access points connected to the UE
through Ethernet cable.

The demonstrations using this STA will provide valuable information to potential users whose
feedback on the perceived performance of services provided through these 5G systems will also
enable future standards and system optimizations.

Document Created: 2017-12-19 10:29:50
Document Modified: 2017-12-19 10:29:50

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