Abstract: It is urgent to improve the utilization rate of satellite channel resources and explore both efficient and feasible satellite interactive terminal access mechanism in the development of satellite communication. The disparity between the requirements for free access of satellite interactive terminal as they come and the access mechanism based on bandwidth preplanning in the current satellite communications with DVBRCS standard is emerging. Therefore, a channel feedback optimization access mechanism is proposed. The mechanism based on the signaling features of original protocol comprehensively considered the data service requirements for each satellite interactive terminal, exploratively introduced a modest incentive method and creatively constructed a dynamic negotiation feedback model to increase the access number of satellite interactive terminals and satisfy the requirements of satellite terminal ondemand access as they come. It enhanced the channel utilization efficiency, and maximized the service benefits of overall bandwidth communication as well. The experiments have proved that the bandwidth allocation feedback optimization mechanism improved the access rate by nearly one time compared with the traditional model and the algorithm took only about 0.67s with maximum number of terminal access, which could be a technical reference for the current use of satellite channels.

Key words: resource allocation, feedback optimization, satellite channel, negotiation mechanism, service level