Skip to main content

Wi-Fi Alliance and AT4 to test unlicensed LTE coexistence with wi-fi

AT4 wireless is to provide testing services to assess the fair coexistence of wi-fi and LTE in unlicensed spectrum (LTE-U) devices in accordance with the Wi-Fi Alliance Coexistence Test Plan. The testing assesses whether commercially available LTE-U devices coexist fairly with wi-fi in the same environment. The development and deployment of LTE-U devices, which utilise 4G LTE radio communications technology in the unlicensed spectrum, introduces the possibility of interference with wi-fi equipment operat
August 9, 2016 Read time: 2 mins
AT4 wireless is to provide testing services to assess the fair coexistence of wi-fi and LTE in unlicensed spectrum (LTE-U) devices in accordance with the Wi-Fi Alliance Coexistence Test Plan. The testing assesses whether commercially available LTE-U devices coexist fairly with wi-fi in the same environment.

The development and deployment of LTE-U devices, which utilise 4G LTE radio communications technology in the unlicensed spectrum, introduces the possibility of interference with wi-fi equipment operating in the same bands. Small deviations in LTE-U design requirements may affect wi-fi performance when working in proximity and in the same frequency band. AT4 wireless will conduct independent testing based on objective tests and an industry-approved methodology to verify that LTE-U products do not violate fairness indicators.

Wi-Fi Alliance agreed to qualify AT4 wireless to provide testing services based on the Coexistence Test Plan, which is being developed by members of the wi-fi and LTE-U communities in Wi-Fi Alliance. The Performance Test Tool from AT4 wireless will collect the most relevant key performance indicators, such as throughput, latency (one-way delay), and jitter (latency variation). Official testing will commence once Wi-Fi Alliance releases the final Coexistence Test Plan.

The AT4 wireless Performance Testing Platform is a multipurpose testing solution capable of acting with different roles: traffic generation, setup automation, data collection and analysis. It provides specific features tailored for measuring the impact of the LTE-U devices on Wi-Fi deployments.

AT4 wireless has collaborated with Wi-Fi Alliance as an Authorized Testing Laboratory since 2004 and offers test services for all Wi-Fi Alliance programs for the certification of Wi-Fi devices.

Related Content

  • Report exposes smart city tech gaps
    July 29, 2021
    World Economic Forum finds fewer than 25% of cities conduct privacy assessments
  • EETS: still struggling to become reality
    December 4, 2013
    Erich Erker, Norbert Schindler, Peter Tschulik from Siemens Electronic Tolling examine the barriers to EETS deployment. Tolling in Europe was introduced to pay for the construction and operation of individual tunnels, bridges and highways and has evolved in major steps. The original manual tolling systems were highly disruptive to traffic flow and required the creation of large toll plazas, with multiple lanes and toll booths to ensure an acceptable throughput. With the introduction of Dedicated Short Range
  • Environmental impact assessments - where now?
    February 1, 2012
    Peter George, MVA Consultancy, questions the future direction of environmental impact assessments
  • AT&T, Ford, Nokia and Qualcomm Technologies to test C-V2X in U.S.
    November 3, 2017
    American Telephone & Telegraph (AT&T), Ford, Nokia and Qualcomm Technologies are teaming up with the intention of accelerating the development of connected cars by trailing Cellular-V2X (C-V2X) technologies in the U.S. These tests are aimed at showing automakers and road operators the anticipated cost-efficient benefits associated with embedded C-V2X in vehicles and synergies between the deployment of cellular base stations and roadside infrastructure. Initial testing is expected to begin later this year.