Huawei has completed a live demonstration of the co-channel coexistence between Licensed-Assisted Access (LAA) and Wi-Fi systems in a dense small cell scenario targeting realistic LAA deployment in an unlicensed band. The live demonstration was conducted jointly with Japanese mobile operator NTT DoCoMo, during the DoCoMo R&D Open House 2015 held at the DoCoMo R&D Center in Yokosuka Research Park near Yokohama, Japan.
Huawei and DoCoMo demonstrated LAA and Wi-Fi co-existence key technologies complying with standardized LAA in the 3rd Generation Partnership Project (3GPP), which is expected to be completed in the first quarter of 2016.
In this demonstration, different from a previous LAA demonstration held in July 2015, a multi-access points/multi-user small cell network was used to model a practical field test scenario, with an unlicensed carrier operating in air-interface rather than cable connection.
An enhanced (while still 3GPP standardization compatible) co-existence technology, dubbed adaptive Listen-Before-Talk (LBT) proposed by Huawei, was also tested in the demonstration. Due to the flexible resource reuse in both time and power domain, adaptive LBT can further achieve 50 percent LAA performance gain over baseline co-existence service, while still providing fair co-existence to neighboring Wi-Fi systems, Huawei said.
