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

  • Cohda Wireless MK6 V2X solution certified by US FCC
    January 5, 2024

    Cohda Wireless's MK6 connected vehicle technology solution has been certified by the US Federal Communications Commission (FCC) for cellular Vehicle to Everything (C-V2X).

    FCC last year granted waivers permitting deployment of C-V2X technology in the upper 30 MHz of spectrum in the 5.895-5.925 GHz band. 

  • Car makers test next generation connected car communications technology
    July 11, 2016
    Audi, Deutsche Telekom, Huawei, Toyota Motor Europe and other car manufacturers are currently carrying out technical field trials on testing LTE-Vehicular (LTE-V), which is seen as a potential enabler for road safety applications and traffic control services as well as emerging automated driving use. The tests, which are being carried out on the A9 motorway in Germany, with the objective of assessing the performance of LTE-V for connected vehicle communications during its standardisation process. LTE
  • IntelliDrive, connectivity, safety, mobility and the environment?
    January 30, 2012
    Shelley Row, Director of the ITS Joint Program Office, US Department of Transportation, details the new five-year ITS Strategic Research Plan. Imagine a world where vehicles of all types can talk to each other in order to reduce or eliminate crashes, where vehicles can talk to traffic signals to eliminate unnecessary stops, where travellers can get accurate travel time information about all modes and route options, and where transportation managers have data which allows them to accurately assess multimodal
  • US enforcement regulation to deliver clearer guidelines?
    February 2, 2012
    Jim Tuton of American Traffic Solutions looks at the evolution of automated enforcement in North America "Technological regulation will become more sophisticated at the federal level, giving states clearer guidelines" Jim Tuton In just 20 years, photo enforcement in North America has grown from a single speed camera in a small town in Arizona to thousands of photo traffic enforcement cameras which are now operating in 350 communities spread across 27 states and three Canadian provinces. Most of these p