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由于具有高效性和灵活性,多频时分多址接入(MF-TDMA)技术被广泛应用于现代宽带通信卫星系统的上行链路设计中。时隙分配算法的有效性是高效利用MF-TDMA系统资源的保证。在MF-TDMA系统中,时隙资源分配问题可以分为两步:载波信道选择和信道内的时隙分配。对于第1步,RCP-fit等算法提供了良好的用户载波信道预约策略。本文主要针对时隙分配过程的第2步展开讨论,针对载波内的时隙管理问题提出了一种基于倒序时隙编号时隙资源树的时隙组织方式,从时隙编号的角度解决了时隙时间均分问题。并采用伙伴递归调整算法作为载波内时隙优化定位方法,有效减低时隙碎片对系统资源利用率的负面影响。最后通过仿真,验证了该时隙管理算法的高效性。
Due to its high efficiency and flexibility, MF-TDMA technology is widely used in the uplink design of modern broadband communication satellite systems. The effectiveness of the slot assignment algorithm is a guarantee of efficient use of the MF-TDMA system resources. In the MF-TDMA system, the problem of time slot resource allocation can be divided into two steps: carrier channel selection and channel slot assignment. For the first step, RCP-fit and other algorithms provide a good user carrier channel reservation strategy. This paper mainly discusses the second step of the time slot allocation process. Aiming at the problem of time slot management in carrier, this paper proposes a time slot organization method based on the resource tree of reverse numbered time slot. It solves the problem of time slot numbering Split time gap problem. And adopts the partner recursive adjustment algorithm as an intra-carrier time slot optimization positioning method, which effectively reduces the negative impact of slot fragmentation on system resource utilization. Finally, the simulation shows that the time-slot management algorithm is efficient.