CAJ | 학술논문

在新型C-RAN架构无线接入网中,针对下行资源分配问题,在构建多重组播协作系统传输模型的基础上,根据单播业务用分集协作方法满足 QoS,而组播业务用户在同一个频点收到不同的信号可以实现空间分集的特点,提出基于最优化数学模型的最大吞吐量资源分配算法以及利用遗传算法的求解方法,求解使模型目标函数最大的最优单播与组播带宽和功率分配方案。仿真结果表明,该算法能够保证单播用户服务质量,提高组播业务吞吐量。
재신형C-RAN가구무선접입망중,침대하행자원분배문제,재구건다중조파협작계통전수모형적기출상,근거단파업무용분집협작방법만족 QoS,이조파업무용호재동일개빈점수도불동적신호가이실현공간분집적특점,제출기우최우화수학모형적최대탄토량자원분배산법이급이용유전산법적구해방법,구해사모형목표함수최대적최우단파여조파대관화공솔분배방안。방진결과표명,해산법능구보증단파용호복무질량,제고조파업무탄토량。
On the basis of the system model of multiple multicast transmission system in the C-RAN architecture network,ac-cording to the features that unicast service utilizes cooperative diversity to satisfy users’quality of service (QoS)and multicast service realizes space diversity by users receiving different signals in the same time-frequency resource in terms of downlink re-source allocation in C-RAN architecture,a resource allocation algorithm maximizing throughput based on an optimization mathe-matical model and a solution using the genetic algorithm were proposed.And the optimal joint resource allocation scheme was ob-tained by applying the genetic algorithm.Results of simulation indicate that the proposed algorithm can guarantee unicast users’ QoS and improve multicast users’throughput simultaneously.