Difference between community broadcast short message center and short message service

Short message service can be divided into point-to-point short message service and community broadcast short message service according to its implementation mode. Point-to-point short message service refers to the service of sending short messages from entities to designated destination addresses through MO(MS initiates short message service) and MT(MS terminates short message service). The length of the sent message is 140 bytes, that is, a short message can contain 160 English letters or 80 Chinese characters. This can be sent through the manual seat (140). Cell broadcast short message service refers to the service of sending short messages to all short message users in the designated area through the base station that sends information. After encoding the sent short message, the service increases the message length to 82 bytes per page, and can send up to 20 pages of information at most. Usually, mobile companies will send some general information to all GSM users in a certain area in this way, such as traffic information, weather conditions, stock market information, news and so on.

Cell broadcast short message service is an important service provided by mobile communication system. The main difference between it and point-to-point short message service is that the receiver of point-to-point short message is a specific mobile user, while the receiver of cell broadcast short message is all mobile users located in a specific area, including foreign users roaming to this area. The smallest addressable area of the network is a wireless cell, and the information that the network can send can be: business announcements, weather forecasts, traffic quotes, international and domestic news, emergencies, stock market quotes, corporate advertisements, etc. So far, the community broadcast short message service in the world has not reached the stage of large-scale commercialization.