LTE-Advanced系统的多载波聚合技术研究
首发时间:2010-12-21
摘要:为了在未来的IMT-Advanced移动系统中获得达到1Gb/s的峰值数据传输速度,3GPP在新的LTE-Advanced标准中引入了基于宽带的多载波聚合技术(Carrier Aggregation)来支持这种高速数据传输。本文首先简要介绍了LTE-Advanced系统的几项关键技术,然后介绍了CA技术,阐明了物理层和媒体访问控制层(MAC)的数据聚合方案。同时考虑到LTE-Advanced系统与LTE系统的兼容性要求所带来的挑战,对不对称CA、控制信号设计、切换控制和保护带宽等问题进行了讨论。
关键词: LTE LTE-Advanced 多载波聚合 不对称CA
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STUDY OF CARRIER AGGREGATION TECHNOLOGY IN LTE-ADVANCED
Abstract:To get a peak data transmission speed of 1Gb/s in the future IMT-Advanced mobile system, Carrier Aggregation(CA) Technology is used by 3GPP to support such a high transmission speed in the new standard,LTE-Advanced. This paper first introduces briefly some key technologies of LTE-Advanced system, then focus on CA and present some methods of aggregation.At the challenge of compatibility between LTE-Advanced and LTE, asymmetical CA,control signal design, handover control and guard band are also discussed at the end of the paper.
Keywords: LTE LTE-Advanced Carrier Aggregation Asymmetical CA
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