Exhibit I

0057-EX-ML-2016 Text Documents

AT&T; Services, Inc.

2016-03-11ELS_174020

Exhibit I
The proposed experimentation involves feature testing and Wi-Fi coexistence evaluation of a new cellular
system that additionally utilizes the unlicensed frequencies to enhance the overall system capacity and
provide better telecommunication experience.
We are planning to install two Smallcell-eNodeB base stations inside a building in Austin with mobile
handset units being tested in and around that building. The eNodeB base stations will be operating on the
LTE band 4 (B4) as well as the UNII-1 and UNII-3 bands. The base station antennas could be directional
but the testing would point the antennas in 0 to 360 degrees in horizontal plane and -5 to -10 degrees in
vertical plane. The width of beam in degrees at the half power point is 120 degrees. The equipment will be
provided by manufacturers such as Ericsson and Nokia in compliance with the LTE-Unlicensed (LTE-U)
and LTE-License Assisted Access (LTE-LAA) specifications.
This experimentation is expected to report as to how well the LTE-U/LTE-LAA and Wi-Fi can coexist
under the test conditions and also provide a measure of performance of the LTE-U/LTE-LAA system. The
experimentation results will pave the way for utilization and/or improvement of the LTE-U/LTE-LAA
specifications.

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Document Created: 2016-03-11 16:47:29
Document Modified: 2016-03-11 16:47:29

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