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

  • Interview with new ITS America chairman David St Amant
    April 23, 2013
    David St Amant, incoming chair of ITS America, on the exciting and challenging road ahead for ITS
  • Healthy prospects for floating vehicle data systems
    February 3, 2012
    Elmar Brockfeld, Alexander Sohr and Peter Wagner from the German Aerospace Center's Institute of Transport Systems look at the prospects for floating vehicle data systems. Although Floating Vehicle Data (FVD) or probe vehicle fleets have been around for about a decade, the idea behind them is of course much older: from probe vehicles that flow with the traffic it should be possible to get a precise, fast and spatially near-complete picture of the prevailing traffic flow conditions in an area under surveilla
  • Authorities select enforce now, pay later option
    October 19, 2015
    Outsouring of enforcement services is on the increase internationally as highway and traffic authorities seek further support in resources and expertise from the private sector. Jon Masters reports. Signs of a significant company making moves into a new market can usually be read as indication of likely growth in that particular sector. Q-Free’s expansion from tolling operations into general traffic enforcement could be viewed as surprising as it is moving into what are relatively mature and consolidating m
  • Transportation applications move to machine vision’s mainstream
    June 11, 2015
    The adaptation of machine vision to transport applications continues apace. That the machine vision industry is taking traffic installations seriously is evident by the amount of hardware and software products tailor-made for ITS applications that are now available on the market. A good example comes from US-based Gridsmart Technologies which has developed a single wire fisheye camera that provides a horizon to horizon view for use at intersections. Not only does the single camera replace four or more in a