One of the biggest challenges of MNO is the deep indoor coverage. Traditional solutions like DAS (Distributed Antenna System) or macro eNB are very costly and difficult to deploy, since it is increasingly challenging to acquire site infrastructure or get permission from land owner. SmallCell has been a hot topic in addressing this challenge, as it is very economical and flexible to deploy thanks to its tiny size and adaptability to any kind of IP backhaul. However, in some cases it is still challenging to get backhaul for SmallCell as freely as wanted. This puts some limitations on the coverage/capacity improvement with SmallCells. Baicells UE-Relay SmallCell is a very convenient solution to enable the SmallCell with a Drop and Play style, providing backhaul to SmallCell the wireless connection from the macro layer network.
The UE-Relay Cell is suggested to be put next to window, or on the table. Because the UE embedded in the UE-Relay Cell enjoy higher antenna gain than smartphone, the signal from macro eNB can be better received, and the SmallCell for access also provides better RSRP and SINR to smartphones within the building, so the overall channel quality is improved. The capacity of macro layer can be fully utilized to improve indoor coverage and capacity.