Long Term Evolution-Advanced (LTE-A) offers several new technologies to improve the performance of the user. However, poor received signal and interference from adjacent cells in the cell-edge area can reduce the efficiency of using individual technology. Therefore, the cell-edge users have lower throughput compared to the other users in the cell and LTE-A standard. An efficient downlink radio resource management scheme is proposed in this paper by combining the coordinated multipoint transmission and reception technique along with carrier aggregation technique to achieve higher throughput for the cell-edge user and better overall performance. The proposed method jointly transmits multiple component carriers to the cell-edge user from different cells to increase the bandwidth, strengthen the received signal, and reduce the interference while it satisfies several constraints. Modified largest weighted delay first packet scheduling algorithm is deployed for resource allocation, which takes into account the delay parameters, the probability of packet loss, and data rates of the user. The obtained system-level simulation results show that the proposed method significantly enhances the throughput performances, spectral efficiency, and fairness index, compared with the existing conventional methods.

高级长期演进（LTE-A）提供了多种新技术来提高用户的性能。但是，不良的接收信号和来自小区边缘区域中相邻小区的干扰会降低使用单个技术的效率。因此，与小区和LTE-A标准中的其他用户相比，小区边缘用户的吞吐量较低。本文提出了一种有效的下行无线资源管理方案，该方案将协作多点传输和接收技术与载波聚合技术相结合，从而为小区边缘用户实现更高的吞吐量和更好的整体性能。所提出的方法从不同的小区向小区边缘用户共同发送多个分量载波，以增加带宽，增强接收信号，并在满足几个约束的同时减少干扰。部署修改后的最大加权延迟优先分组调度算法进行资源分配，该算法考虑了延迟参数，分组丢失的概率和用户的数据速率。获得的系统级仿真结果表明，与现有的常规方法相比，该方法显着提高了吞吐量性能，频谱效率和公平性指标。