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LTE Advanced

About: LTE Advanced is a research topic. Over the lifetime, 4055 publications have been published within this topic receiving 74262 citations. The topic is also known as: Long-Term Evolution Advanced & LTE-A.


Papers
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Patent
Shafi Bashar1, Hong He2, Huaning Niu2, Jong-Kae Fwu2, Yuan Zhu2, Xiaogang Chen2 
29 Jun 2012
TL;DR: In this article, alternative techniques for performing timing and frequency synchronization in the downlink between an eNB and a UE when CRSs are not present in a component carrier are described.
Abstract: A particular kind of component carrier that may be used as a secondary cell in an LTE system is a new type carrier that has reduced or eliminated legacy control signaling such as the omission of CRSs. Alternative techniques are described for performing timing and frequency synchronization in the downlink between an eNB and a UE when CRSs are not present in a component carrier. These techniques involve using either channel state information reference signals or UE-specific reference signals.

21 citations

Journal ArticleDOI
TL;DR: A new handover optimization algorithm for LTE-A networks based on fuzzy logic consists of selecting the optimum handover margins for both macro and small cells which are required for the handover process to optimize the performance metrics.
Abstract: Small cells are deployed in the long-term evolution—advanced (LTE-A) data standard to satisfy rapidly increasing data rates at hotspots and enhance coverage in buildings. Small cells are low-cost, ...

21 citations

Journal ArticleDOI
TL;DR: Simulation results verify that EPS keeps high profit and throughput, and also saves more energy in LTE-A HetNets, and proposes an Energy-efficient Pricing and resource Scheduling (EPS) framework.
Abstract: Many operators offer long term evolution–advanced (LTE-A) service for broadband wireless access, where they deploy diverse base stations to form a heterogeneous network (HetNet). It is critical to manage downlink resource to improve LTE-A performance. The paper studies the issues of energy saving and dynamic pricing in resource scheduling, and proposes an Energy-efficient Pricing and resource Scheduling (EPS) framework. It considers a HetNet scenario where picocells are densely deployed in each macrocell, and divides users into three classes for charge. EPS clusters picocells into groups, and selects a coordinator to arrange the service in each group, so as to share loads of picocells and save energy of base stations. Then, it adopts a two-layer scheduling strategy to allot resource to each flow based on its user class, channel quality, and packet delay. By using peak and off-peak rates, EPS adaptively adjusts the amount of money charged to each user to balance between operator profit and network utilization. Simulation results verify that EPS keeps high profit and throughput, and also saves more energy in LTE-A HetNets.

20 citations

Proceedings ArticleDOI
10 Jun 2014
TL;DR: It is shown that the proposed scheme has the advantages of better performance, small standardization efforts due to its reusability of existing codebook and CSI-RS configurations, and transparency to the legacy UEs.
Abstract: Three-dimensional (3D) MIMO is a promising enhancement of MIMO technology to improve system capacity by exploiting the spatial characteristics in both azimuth dimension and elevation dimension. As one of the key aspects in practical systems, the channel state information-reference signal (CSI-RS) design specific to future LTE-Advanced are discussed, and a precoding scheme of CSI-RS considering elevation beamforming is proposed. It is shown that the proposed scheme has the advantages of better performance, small standardization efforts due to its reusability of existing codebook and CSI-RS configurations, and transparency to the legacy UEs.

20 citations

Proceedings ArticleDOI
Yifei Yuan1, Shuanshuan Wu1, Jin Yang1, Feng Bi1, Xia Shuqiang1, Guohong Li1 
01 Aug 2010
TL;DR: In this paper, backhaul subframe allocation for TDD-LTE and all seven downlink-uplink configurations are discussed and analyzed and insights from wireless industry point of view are provided on how to design TDD -LTE relay system to balance the backward compatibility, the operation cost/complexity and technology advancement.
Abstract: Relay is a key technology in LTE-Advanced (LTE-A) for both FDD and TDD. A major aspect of relay technology is the backhaul subframe allocation. In this paper, we discuss backhaul subframe allocation for TDD-LTE and analyze all seven downlink-uplink configurations for completeness. The discussion is put in context of latest development in 3GPP physical layer and centered on specifications impact and various design constraints. With the subframe allocation as an example, the article provides insights from wireless industry point of view on how to design TDD-LTE relay system to balance the backward compatibility, the operation cost/complexity and technology advancement.

20 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202316
202242
202156
202082
2019135
2018192