Research on a Distributed Channel Load Sensing Algorithm Based on SPMA Protocol

SPMA is a new type of ad-hoc network Data-Link-Layer multiple access protocol. Different from traditional multi-finger access methods, such as CSMA, TDMA, etc., SPMA protocol can realize the priority distinction of information and ensure the low-latency and high-reliability transmission of high-priority information. This paper firstly presents a highly dynamic ad-hoc network scheme based on SPMA protocol, and focuses on the routing protocol and network topology control algorithm. Then, a cross-layer optimization algorithm scheme of OLSR and SPMA for multi-hop environment is proposed, that is, cross-layer optimization Layer-optimized distributed channel load sensing algorithm, so that the threshold algorithm can also be optimized; finally, the SPMA simulation verification platform is built to verify the distributed channel load sensing algorithm proposed in this paper, which can achieve better effects of differentiated transmission with different priorities and better guarantee the high-performance transmission of high-priority data.