In a wireless communication method, base stations having an identical number of channels for receiving narrowband modulation (UNB) are divided into groups. Data transmission channels of all base stations have identical time and frequency characteristics. All subscribers split into groups are periodically sent messages with subscriber group numbers by all the base stations. When a group number of a corresponding subscriber coincides with a group number in a message received by the subscriber, all the subscribers of the group send response messages to the base stations using UNB, wherein response messages are sent sequentially from all subgroups of subscribers of the group, and subscribers of a subgroup send response messages on different frequencies. The base stations receive the response messages on all frequencies corresponding to subscribers, decode the messages and generate a database of response messages, which can be used for generating subsequent messages with corresponding subscriber group numbers.