Topic
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.
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08 Jul 2014
TL;DR: Performance evaluation suggests that this protocol is efficient with respect to authentication overhead and handover delay, and is designed to be secure against many attacks by using a software verification tool.
Abstract: We propose Authentication and Key Agreement (AKA) for Machine Type Communications (MTC) in LTE-Advanced. This protocol is based on an idea of grouping devices so that it would reduce signaling congestion in the access network and overload on the single authentication server. We verified that this protocol is designed to be secure against many attacks by using a software verification tool. Furthermore, performance evaluation suggests that this protocol is efficient with respect to authentication overhead and handover delay.
35 citations
TL;DR: This study explores the problem of jointly optimizing the power level and scheduling of resource blocks for LTE-Advanced network based on orthogonal frequency division multiplexing (OFDM), and proposes a distributed optimization scheme based on evolutionary potential games.
35 citations
27 Dec 2018
TL;DR: In this article, the authors proposed dynamic handover control parameters (HCPs) in HetNets (LTE-A and mm-wave networks) with dense small cells.
Abstract: Deploying ultra-dense small-cell base stations in the next-generation mobile networks is one of the most expected approaches to overcome the uncertainty of millimeter wave (mm- wave) communications. Mobility management is a critical issue that requires much concern to achieve seamless and highly reliable connection through user mobility. Handover in heterogeneous networks (HetNets) has gained attention, especially when 5G ultradense small cells coexist with the current 4G networks. Handover failure is one of the main issues in mobility, and it can be avoided by adjusting handover control parameters (HCPs): time-to-trigger (TTT) and handover margin (HOM). In this paper, we proposed dynamic HCPs in HetNets (LTE-A and mm-wave networks) with dense small cells. The proposed algorithm was compared with different settings of HCPs for different user mobile speed scenarios. The simulation results show that the proposed algorithm significantly reduces the probability of ping pong handovers and radio link failure, thus improving network performance.
35 citations
16 May 2010
TL;DR: A novel transmission scheme with the joint proportional fairness (PF) scheduling algorithm, which does not need to allocate the dedicated frequency band to cell-edge UEs for transmission and can make best of frequency diversity gain, is proposed for CoMP-SU-MIMO system.
Abstract: In the downlink cellular network, the coordinated multi-point transmission for single-user multi-input multi-output (CoMP-SU-MIMO) is employed in Long Term Evolution Advanced (LTE-A) system, which can effectively reduce inter-cell interference for cell-edge user equipments (UEs). A novel transmission scheme with the joint proportional fairness (PF) scheduling algorithm, which does not need to allocate the dedicated frequency band to cell-edge UEs for transmission and can make best of frequency diversity gain, is proposed for CoMP-SU-MIMO system. By using Non-CoMP SU-MIMO system as a baseline, the average sector throughput and cell-edge UEs' rates of the proposed scheme are evaluated through our system level simulation compared to the traditional flexible frequency allocation plan (FFAP) scheme. The results present that the proposed transmission scheme which can be applied to multiple scenarios effectively outperforms the FFAP scheme on both the average sector throughput and cell-edge UEs' rates significantly.
35 citations
TL;DR: The challenges and potential of unsupervised LTE D2D (mode 2) for safety-critical vehicle-to-everything (V2X) communications are evaluated and two distributed resource allocation strategies for unlicensed band access are proposed.
Abstract: In this article, we explore the recent Third Generation Partnership Project (3GPP) long-term evolution (LTE) device-to-device (D2D) radio resource management specification (Release 14) to identify the challenges and evaluate the potential of unsupervised LTE D2D (mode 2) for safety-critical vehicle-to-everything (V2X) communications. We also propose two distributed resource allocation strategies for unlicensed band access. Complementary to dedicated short-range communication (DSRC)/intelligent transport system (ITS)-G5, unsupervised LTE D2D presents an opportunity to provide redundancy for ultrareliable systems, such as safety-critical V2X communications.
35 citations