An Indoor Terminal Positioning Algorithm for Mobile Communication Management and Control Scenarios

The popularity of mobile terminals has brought convenience to people's lives, but in some important areas and critical places, the illegal use of mobile terminals will introduce the problem of sensitive information leakage, for the security and confidentiality risk of such scenes. This paper proposes an indoor mobile terminal high-precision grid positioning algorithm based on the Received Signal Strength Indicator RSSI . Firstly, by mining the uplink signal protocol characteristics of mobile communication, the correlation of the demodulation reference signal Demodulation Reference is used to accurately extract the target user data, and the interference from non-target radiation sources is effectively excluded. Secondly, an efficient grid positioning strategy is proposed, which divides the complex indoor environment into multiple fine grids and constructs a probabilistic model based on RSSI data to achieve the target location estimation. Finally, an indoor mobile terminal positioning prototype system for mobile communication control scenarios is built based on the self-developed receiver board. Experiments show that the method in this paper is an effective and feasible solution for indoor mobile terminal positioning in mobile communication control scenarios and improves the ability to protect electromagnetic security in confidential and critical areas.