arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.5810cs.NI
收藏

通过中继小区扩展增强LTE-Advanced中继部署

Enhancing LTE-Advanced Relay Deployments via Relay Cell Extension

Ömer Bulakci, Abdallah Bou Saleh, Simone Redana, Bernhard Raaf, Jyri Hämäläinen

摘要:

中继是对当前无线电接入网络的有希望的增强。中继增强型LTE-Advanced网络有望以具有成本效益的方式满足苛刻的覆盖范围和容量要求。然而,由于低发射功率,中继节点的覆盖区域将是小的。因此,中继部署的性能可能受到负载不平衡的限制。在这项研究中,我们提出了一个实际的解决方案,这个问题,通过引入一个偏见,小区选择和切换决策,以及在eNB的发射功率降低。这种方法的结果在中继单元的扩展和适当的负载平衡,然后可以实现。此外,它表明,一个适当的功率控制设置是必要的,在上行链路和功率控制优化可以进一步提高系统性能。全面的系统级仿真证实,所提出的解决方案产生显着的用户吞吐量增益在上行链路和下行链路。

英文摘要:

Relaying is a promising enhancement to current radio access networks. Relay enhanced LTE-Advanced networks are expected to fulfill the demanding coverage and capacity requirements in a cost-efficient way. However, due to low transmit power, the coverage areas of the relay nodes will be small. Therefore, the performance of relay deployments may be limited by load imbalances. In this study, we present a practical solution for this problem by introducing a bias to cell selection and handover decisions along with a reduction in eNB transmit power. This method results in an extension of the relay cells and an appropriate load balance can then be achieved. Moreover, it is shown that a proper power control setting is necessary in the uplink and that power control optimization can further enhance the system performance. Comprehensive system level simulations confirm that the proposed solution yields significant user throughput gains both in the uplink and the downlink.

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。

↑