Comparison analysis on problems occurred in private network design

Trunking communication system is transformed from analog trunking communication system to digital trunking communication system;Digital trunking communication system is becoming one of the main subject of private network.In the process of network design,problems such as the choices of communication districts,counting of system capacity and choices of different systems are appeared.A comparison analysis is carried out on the choices of coverage area,multiple address and the relationship between system loading and ca-pacity by different means.Finally,several typical digital Trunking communication systems and their characteristics are listed.