无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2014年
8期
5-7,17
,共4页
HetNet%多流多载波%用户归属%小区边缘用户吞吐量
HetNet%多流多載波%用戶歸屬%小區邊緣用戶吞吐量
HetNet%다류다재파%용호귀속%소구변연용호탄토량
HetNet%multi-flow & multi-carrier%user association%cell edge user throughput
异构网(HetNet)是增强小区覆盖、提高小区吞吐量的有效途径。通用移动通信系统(Universal Mobile Tele-communications System, UMTS)引入多流多载波技术作为 HetNet 增强方案,可以进一步提高系统吞吐量。针对多流多载波HetNet 场景下各类型小区负载不均衡的问题,建立了一个多流多载波 HetNet 用户归属联合优化模型,并通过求解该模型给出了具体的算法流程。仿真结果表明,相对于已有的 Bias 方案和软复用方案,所提算法能够在提升用户平均吞吐量的同时,显著提高小区边缘用户吞吐量和用户速率公平性。
異構網(HetNet)是增彊小區覆蓋、提高小區吞吐量的有效途徑。通用移動通信繫統(Universal Mobile Tele-communications System, UMTS)引入多流多載波技術作為 HetNet 增彊方案,可以進一步提高繫統吞吐量。針對多流多載波HetNet 場景下各類型小區負載不均衡的問題,建立瞭一箇多流多載波 HetNet 用戶歸屬聯閤優化模型,併通過求解該模型給齣瞭具體的算法流程。倣真結果錶明,相對于已有的 Bias 方案和軟複用方案,所提算法能夠在提升用戶平均吞吐量的同時,顯著提高小區邊緣用戶吞吐量和用戶速率公平性。
이구망(HetNet)시증강소구복개、제고소구탄토량적유효도경。통용이동통신계통(Universal Mobile Tele-communications System, UMTS)인입다류다재파기술작위 HetNet 증강방안,가이진일보제고계통탄토량。침대다류다재파HetNet 장경하각류형소구부재불균형적문제,건립료일개다류다재파 HetNet 용호귀속연합우화모형,병통과구해해모형급출료구체적산법류정。방진결과표명,상대우이유적 Bias 방안화연복용방안,소제산법능구재제승용호평균탄토량적동시,현저제고소구변연용호탄토량화용호속솔공평성。
HetNet is a promising solution to strengthen cell coverage and increase cell throughput.With the introduction of multi-flow & multi-carrier technique in the UMTS system,the throughput of HetNet has been gearing up.In order to solve load imbalance prob-lem in multi-flow & multi-carrier HetNet scenario,this paper establishes a multi-flow & multi-carrier HetNet user association joint opti-mization model and a specific algorithm is then proposed through solving the optimization model.Simulation results revealed that com-pared to the existing schemes,the proposed algorithm improves user’ s average throughput,boosts the cell edge user throughput and improves user’s rate fairness remarkably.