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Indoor wireless communication using Wireless Fidelity (WiFi) is becoming amajor need for the success of Internet of Things (IoT) and cloud robotics inboth developed and developing countries. With different operating conditions,interference, obstacles and type of building materials used, it is difficult topredict the path loss components in an indoor environment, which are crucialfor the network design. It has been observed that the indoor path loss modelsproposed for western countries cannot be directly used in Indian scenarios dueto variations in building materials utilized, floor plans, etc. In this paper,we have proposed a non-deterministic statistical indoor path loss model- TataIndoor Path Loss Model (T-IPLM) which can be used for the 2.4 - 2.5 GHz,Industrial Scientific and Medical (ISM) band. To propose and validate, we haveconducted several drive tests with different conditions such as busy officepremise with obstacles, open office premise, corridor, canteen, andmulti-storey office locations, etc. We have also compared T-IPLM with popularpath loss models such as ITU-R and Log-distance; T-IPLM matches closely withthe drive test results as compared to other models. We believe that T-IPLMmodel can be used extensively to design accurate indoor communication networksrequired for regular WiFi communications and deployment and operations of IoTand cloud robotics.

Realistic Indoor Path Loss Modeling for Regular WiFi Operations in India