SERVICE DATA TRANSMISSION METHOD AND SYSTEM

摘要

Disclosed are a service data transmission method and system. The method comprises: a sending station sending a radio frame and notifying information about a group transmission time interval; a group station receiving the radio frame and acquiring information about a group transmission time interval of a group there the group station belongs; and the group station competing for sending in the group transmission time interval of the group where the group station belongs. According to technical solution provided in embodiment of the present invention, a sending station allocates particular group transmission time intervals (subsections) to stations in different groups, and in the case of a huge number of user stations, user stations in different groups compete for channels in different time intervals, thereby avoiding simultaneous or approximately simultaneous competition among a large number of users, reducing the collision probability, and improving the wireless resource utilization efficiency.