The document discusses the new CTIA Version 3.0 requirements for Over the Air (OTA) testing of Assisted GPS (A-GPS) in mobile devices. It describes how ETS-Lindgren's integrated antenna measurement solutions extend their AMS-8000 series to enable testing to meet CTIA Version 3.0 standards. Their systems provide A-GPS OTA testing across the product development cycle and include equipment needed for testing as well as software to automate the testing process.

1. Over the Air A-GPS Testing
Agilent Technologies and ETS-Lindgren
Meet The Requirements for
CTIA Version 3.0 Over the
Air Test Plan
The CTIA’s new requirement for Over the
Air (OTA) performance testing of Assisted
GPS (A-GPS) mobile devices presents new
challenges to manufacturers of UMTS/
GSM products. Version 3.0 of the CTIA
Test Plan for Mobile Station Over the Air
Performance is mandatory for certification
testing at all CTIA Authorized Test
Laboratories (CATL’s).
In order to ensure compliance you need Offering a wide variety of OTA test options,
Assisted-GPS to test your products to the new OTA the AMS-8000 series provide seamless
standard. ETS-Lindgren’s new integrated integration with Agilent Technologies
Assisted-GPS (A-GPS) was intro- antenna measurement solution extends test instrumentation.
duced in order to enhance the use of the company’s AMS-8000 series to allow
GPS in mobile devices. The FCC’s you to test your products to meet the
E911 mandate requires that cellular requirements of CTIA version 3.0. The
phone carriers provide Automatic company’s test systems are currently in
Location Identification for the use of use by over 80% of CATL’s worldwide.
emergency services.
The AMS-8000 series of antenna
A-GPS uses the wireless network to measurement systems include a fully
assist location finding through the anechoic radio frequency (RF) test cham-
use of an Assistance Server. The ber equipped with device under test (DUT)
Assistance Server can approximate positioning equipment, antennas, instru-
the location of a mobile device from mentation, and test automation software. ETS-Lindgren’s antenna measurement
the position of the cell site to which Version 1.07 of ETS-Lindgren’s EMQuest™ systems provide A-GPS OTA testing
it is connected. As a fixed point EMQ-100 Antenna Measurement Software across the entire product cycle; Design
the Assistance Server has a good adds support for A-GPS and other Receive Verification, Performance Validation,
satellite signal and no restrictions Signal Strength (RSS) based measurement Pre-Certification Testing, and Final
on computational power. Together methods. The system supports wireless Certification testing. Customerswith
with a scaled down GPS receiver in communication test instrumentation existing AMS-8000 systems can easily
the mobile device this allows much including the 8960 wireless communica- upgrade to A-GPS test capability by add-
faster and more accurate positioning. tions test set and E4438C vector signal ing options to their EMQuestEMQ-100
generator from Agilent Technologies. software.

2. Over the Air A-GPS Testing
Ordering Information
Agilent Technologies
8960 wireless communications test set
E6703F lab application for WCDMA
E6701G lab application for GSM/GPRS/EGPRS
E4438C ESG vector signal generator
E4438C-005 6 Gbyte hard drive
E4438C-409 GPS personality
E4438C-601 or -602 internal baseband generator Agilent GS-9000 Lite A-GPS
mobile device bench top
Other options are available; contact your local Agilent sales engineer design verification test
for more details solution.
ETS-Lindgren
Technical Specifications (AMS-8000 series chambers) www.agilent.com/find/agps
Anechoic chamber with positioning system, test antenna and cellular For more information on Agilent
communications antenna Technologies’ products, applications
or services, please contact your local
Typical GPS OTA path loss range of 30 to 60 dB, depending on range Agilent office. The complete list is
length available at:
www.agilent.com/find/contactus.
Test antenna with two orthogonally placed feeds for linear or circular
polarizations, 700 MHz – 10 GHZ
Minimum of one wireless communication antenna
www.ets-lindgren.com/
wireless
Positioning system for changing angle of arrival
For more information on ETS-Lindgren
products, applications or services,
please contact ETS-Lindgren at
(512) 531-6400.
Product specifications and descriptions in
this document subject to change without
notice.
© Agilent Technologies, Inc. 2009
Printed in USA, October 5, 2009
5990-4655EN