CAJ | 학술논문

　　针对异构网络存在小区间干扰的问题，提出了一种基于频域载波聚合的干扰协调管理机制。该机制将所有小区的用户分为中心用户和边缘用户，采用可降低干扰的信漏噪比（SLNR）准则，动态调度用户和选择小区载波，并将每种小区载波选择方案对应一种调度用户分组的机制，即对小区的中心用户和边缘用户采用不同优先级，以此有效避免小区间的干扰，其中优先级采用比例公平和SLNR准则。仿真结果表明，由于在系统目标最大化时实现了频率复用增益和干扰消除增益间实现最佳的平衡，可有效取得系统流量的分流和总吞吐量的提升。
　　침대이구망락존재소구간간우적문제，제출료일충기우빈역재파취합적간우협조관리궤제。해궤제장소유소구적용호분위중심용호화변연용호，채용가강저간우적신루조비（SLNR）준칙，동태조도용호화선택소구재파，병장매충소구재파선택방안대응일충조도용호분조적궤제，즉대소구적중심용호화변연용호채용불동우선급，이차유효피면소구간적간우，기중우선급채용비례공평화SLNR준칙。방진결과표명，유우재계통목표최대화시실현료빈솔복용증익화간우소제증익간실현최가적평형，가유효취득계통류량적분류화총탄토량적제승。
In order to minimize inter-cell interference in heterogeneous networks,a new interference coordination mechanism based on carrier aggregation is proposed. The proposed method first divides the users into center users and edge users,then uses the signal-to-leakage-plus-noise ratio(SLNR)criterion to schedule the different users across the cells to share the same carrier resources. As a result,the method selects cells and carriers dy-namically,and schedules users corresponding to each specific combination of carrier and cell. The scheduling method is based on modified PFS and SLNR criterion which gives different priority for center users and edge users. Simulation results show that the proposed scheme can realize the best tradeoff between the gain of fre-quency reuse and interference avoidance when maximizing the system objective,so as to effectively offload sys-tem flow from the Macro cell to Pico cell and improve system throughput.