Abstract:

The preliminary construction of the NB-IoT network has been completed at this stage.The overall coverage is good,but there are more partial coverage holes,insufficient coverage of indoor difficult scenes,prominent interference problems and overlapping coverage.At present,the industry application of NB-IoT is low in maturity,and the application of the industry is in its infancy.Different terminal manufacturers have different specifications,which leads to major problems in the deployment process of network deployment.The NB-IoT network related indicators according to different business characteristics were analyzed,according to the main types of business of the internet of things.The coverage performance of such services was researched according to test data and statistical data.In-depth coverage analysis on the covers of manholes and poles was conducted.Overlapping coverage analysis gives an optimized solution to the business model with relatively concentrated service access.

Key words: deep coverage, independent antenna feeder, access capability