An adaptive MAC protocol for LEO satellites network

Authors:
Guan Mingxiang;Wang Ruichun;Gong Handong
Affiliations:
Dept. of Electronic and Communication Technology, SZIIT, Shenzhen, China;Dept. of Electronic and Communication Technology, SZIIT, Shenzhen, China;Dept. of Electronic and Communication Technology, SZIIT, Shenzhen, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

Citing 3
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Abstract

Considering that weak channel collision detection ability, long propagation delay and heavy load in LEO satellite communications, a valid adaptive APRMA MAC protocol was proposed. Different access probability functions for different services were obtained and appropriate access probabilities for voice and data users were updated slot by slot based on the estimation of the voice traffic and the channel status. In the proposed MAC protocol limited wireless resource is allocated reasonably by multiple users and high capacity was achieved. Finally simulation results demonstrated that the performance of system was improved by the APRMA compared with the conventional PRMA, with an acceptable trade-off between QoS of voice and delay of data.