先进卫星有效载荷无线资源分配的灵活用户映射
Flexible User Mapping for Radio Resource Assignment in Advanced Satellite Payloads
摘要：
这项工作探讨了灵活的分配用户的波束，以配合卫星系统中的非均匀的业务需求，打破传统的小区边界和服务用户的潜在的非主导波束。来自灵活波束用户映射的额外自由度带来了以用户为中心的框架，其中两步优化过程作为实用策略。智能波束-用户映射与每个波束的可调节带宽分配联合探索，并针对具有灵活无线电资源分配的有效载荷的不同技术进行测试。数值结果得到各种非均匀的交通分布，以评估解决方案的性能。通过狄利克雷分布，可以方便地参数化，并使模拟容易再现的波束的流量分布的形状。即使在功率分配的理想条件下，灵活的波束用户映射和可调节的功率分配都类似地平均增强了带宽的灵活分配。结果表明，用户和波束的智能配对在高度不对称的需求场景中提供了显着的优势，在热点类情况下，在提供的和最低用户速率方面分别提高了10%和30%，而对用户设备没有影响。
英文摘要：
This work explores the flexible assignment of users to beams in order to match the non-uniform traffic demand in satellite systems, breaking the conventional cell boundaries and serving users potentially by non-dominant beams. The additional degree of freedom from the flexible beam-user mapping brings about a user-centric framework, with a two-step optimization process as a practical strategy. The smart beam-user mapping is jointly explored with adjustable bandwidth allocation per beam, and tested against different techniques for payloads with flexible radio resource allocation. Numerical results are obtained for various non-uniform traffic distributions to evaluate the performance of the solutions. The traffic profile across beams is shaped by the Dirichlet distribution, which can be conveniently parameterized, and makes simulations easily reproducible. Even with ideal conditions for the power allocation, both flexible beam-user mapping and adjustable power allocation similarly enhance the flexible assignment of the bandwidth on average. Results show that a smart pairing of users and beams provides significant advantages in highly asymmetric demand scenarios, with improvements up to 10\% and 30\% in terms of the offered and the minimum user rates, respectively, in hot-spot like cases with no impact on the user equipment.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
