Now they want to upgrade communication system for providing better service for industry and commerce customers with the higher requirements:
1. High efficiency of frequency and spectrum: Business increases greatly but analog technology can't provide more capacities based on current frequency resource.
2. Stability of system: Improve the system stability to ensure the 24hours communication service.
3. High OPEX: There are still lots of analog system running, and the cost of operation and maintenance is very high.
4. Network coverage optimization: Large area coverage and high capacity can reduce OPEX and enhance ROI (Return on Investment).