MMDS is suitable for users with widely distributed distributions - it can be distributed in the range of 40km. However, due to the limitation of the number of channels, it is very risky for operators to use higher modulation technology to increase the application frequency. It is the most important point to limit the application of MMDS in large commercial areas, and large coverage is also likely to cause interference between MMDS cells. Compared with point-to-multipoint LMDS, MMDS is suitable for areas where users are relatively dispersed and have small capacity. In terms of cost, MMDS is lower than LMDS. The data bandwidth that MMDS can provide is also related to the available frequency band, the modulation scheme used (QPSK, 16QAM or 64QAM) and the number of sectors. Roughly estimated, the capacity that can be provided is about 3-4 times of the occupied frequency bandwidth, that is, the frequency bandwidth of 100 MHz can provide data bandwidth of 300 Mbit/s to 400 Mbit/s, which is shared by users within the coverage of one base station. From the perspective of product availability, MMDS is weaker than LMDS, but there are already some manufacturers. MMDS can also be used as a broadband wireless access solution for access backbone networks such as IP, TDM and Frame Relay. Users can use it to achieve Internet access, large-capacity data exchange for local users, voice, VoIP, VOD, data broadcasting, and standard definition or high definition television signals.