lte-tdd系统中基于区域划分的tdd子帧重配置策略.doc


LTE-TDD 系统中基于区域划分的 TDD 子
帧重配置策略
王振旺,王莹**
5
10
(北京邮电大学信息与通信工程学院,北京 100876)
摘要:现在,越来越多的学者正在研究 LTE-TDD 系统中子帧重配置策略和交叉时隙干扰问
题。为了避免交叉时隙干扰,我们提出了一种基于区域划分的 TDD 子帧重配置策略,并评
估了它的小区平均上行吞吐量和小区边缘用户上行吞吐量。该策略的主要优势是它不需要
小区之间进行协作,也不需要复杂的计算,在工程上易于实现。最后,仿真结果显示,该
策略相对于传统的自私的 TDD 子帧重配置策略,无论小区平均上行吞吐量还是小区边缘用
户上行吞吐量,都有所增益。
关键词:LTE-TDD ;TDD 子帧重配置;交叉时隙;干扰避免
中图分类号:
15
Region-Based TDD Reconfiguration Strategy for
Asymmetric Traffic in TD-LTE Systems
Wang Zhenwang, Wang Ying
20
25
30
(Beijing University of Posts and munications School of Information munication
Engineering, Bejing University of Posts and munications, Beijing 100876)
Abstract: Subframe reconfiguration strategies in LTE-TDD systems and their crossed-slot
interference problem in cellular environment have been attracting increasing interest. To mitigate
the crossed-slot interference, we propose the region-based TDD reconfiguration strategy for
asymmetric traffic in TD-LTE systems,and evaluate its cell average throughput and cell edge in
the major advantage of the proposed strategy is that it can be implemented autonomously
in each cell without any coordination between cells plex calculation. Furthermore,
simulation results show that the improvement of uplink throughput in the proposed strategy
increases.
Key words: LTE-TDD;TDD Subframe reconfiguration;crossed-slot;interference migration
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