HP Adds Non-intrusive Co-channel Interference Detection to GSM-based Drive Test System.

PALO ALTO, Calif.--(BUSINESS WIRE)--Sept. 20, 1999--

Hewlett-Packard Company today introduces non-intrusive co-channel interference detection for the HP E7475A GSM-based drive test system, the first receiver-based measurement system to offer this capability at such a low price.

Co-channel interference, a problem for GSM-based wireless network operators, occurs when two base stations with overlapping coverage areas broadcast on the same frequency. The resulting interference can cause dropped calls or other transmission problems.

Special algorithms in the GSM drive test system's receiver detect co-channel interference and decode the base station identity code (BSIC) of the primary and secondary interfering signals. Network operators can locate the sources of co-channel interference without turning off base stations, which creates holes in coverage.

Background

The HP E7475A GSM-based drive test system, introduced in 1998, is used by wireless-network operators and network-equipment manufacturers to measure the performance of the air interface. The integrated receiver-and-phone-based system provides comprehensive RF-measurement and call-performance data as a function of location.

The system measures channel power and decodes broadcast-channel BSICs for trouble-shooting interference problems. It also makes continuous-wave (CW) and channel-power measurements on multiple channels with high accuracy for cell-site evaluation and interference management.

Configurations of the drive test system are available for E-GSM900, DCS1800, GSM1900 and dual-band GSM900/DCS1800 networks. HP digital receivers and test mobile phones are integrated with Windows(R) 95, Windows 98 and Windows NT(R)-based measurement software running on a laptop computer.

Up to four receivers and four phones can be integrated into a single drive test system and controlled from an integrated user interface.

Information on HP's GSM-based drive test system can be found at http://www.tmo.hp.com/tmo/datasheets/English/HPE7475A.html.

U.S. Pricing and Availability

Non-intrusive co-channel interference detection for the HP E7475A is available now as a free upgrade.

Windows and Windows NT are U.S. registered trademarks of Microsoft Corp.

NOTE TO THE EDITOR: Sales information may be obtained by calling 1-800-452-4844 ext. 6710. Please do NOT use editor-contact or corporate telephone numbers for sales information.

Information in this release applies specifically to products available in the United States. Product availability and specifications may vary in non-U.S. markets.

If you choose to review this item, your readers will receive the quickest response to their inquiries by mailing them to Hewlett-Packard Company, Test and Measurement Organization, 5301 Stevens Creek Blvd., MS 54LAK, Santa Clara, Calif. 95052.