With the arrival of 5 G

both the market and the network have urgent demand for indoor positioning technology.In this paper

a pRRU device based on LTE network is proposed to complete the design and application of indoor positioning method of uplink time difference. This method can effectively and accurately identify indoor weak coverage areas with an accuracy rate of 92.26%

which can help improve indoor network quality.At the same time

this method can be applied in 5 G network to provide complete location information service to the market

so as to promote store customer analysis

precision marketing or indoor navigation and other services for 5 G.