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.

Cell Coverage Evaluation for LTE and WiMAX in Wireless Communication System

Abstract: 3 Abstract: In this paper, we have evaluated the cell coverage area for LTE and WiMAX technology theoretically for different frequencies and environments in wireless communication systems. The evaluation was done based on the propagation model-COST HATA231 model, which is suitable for LTE in various environments. Based on this model, we have determined the cell radius and coverage area under some real world application for different continents of the World as per licensed spectrum. We have then compared the cell radius obtained in the case of LTE and WiMAX under different environments and frequencies. The comparison results reveled that the LTE technology not only covers grater area than WiMAX for similar frequencies but also provides high-speed, better Q S and "all-IP" mode of communications. As the results, it is highly expected to be the best o candidate for future wireless communication system.

SDN optimized caching in LTE mobile networks

Abstract: This paper provides an overview of the current LTE architecture and the proposed solutions to integrate Software Defined Network (SDN) technology. The integration of SDN into mobile networks become Software Defined Mobile Network (SDMN), which provides new benefits such as dynamic and efficient caching. Firstly, the paper proposes the integration of SDN in LTE networks on disruptive approach that replaces current mobile transport with SDN based network. Secondly, the benefits of SDN integration to provide optimized content caching is presented. This paper presents a concrete advantage of SDMN for content delivery. Thus, the paper describes the benefits from operator and end user points of view based on a simple scenario of content delivery using dynamic caching reallocation.

Statistical traffic control for cognitive radio empowered LTE-Advanced with network MIMO

Abstract: Deploying 3GPP LTE-Advanced to the ISM band resolves the deployment issue of obtaining feasible bandwidth from crowded spectrum. However, considering that wireless local area networks (WLANs) have been deployed to the ISM band, recent researches show that LTE-Advanced needs to provide communication opportunities for WLANs. Such a coexistence relies on applying the cognitive radio technology to LTE-Advanced. However, the cognitive channel access leading to severe channel availability variation obstructs quality-of-service (QoS) guarantees in LTE-Advanced. To alleviate channel availability variation, we adopt a powerful technology known as the network multiple-input-multiple-output (MIMO) and propose the statistical traffic control scheme comprising the packet transmission scheduling and the admission control for LTE-Advanced to tackle critical challenges of the packet transmission coordination and the radio resources allocation in the network MIMO. Simulations results demonstrate an effective support of voice and video transmissions, thus enabling a successful coexistence with WLANs.

A Novel Cooperative Multi-Cell MIMO Scheme for the Downlink of LTE-Advanced System

Abstract: LTE-advanced system which based on orthogonal frequency division multiplexing (OFDM) can eliminate intra-cell interference but still can not mitigate inter-cell interference (ICI). In this paper, we propose a novel cooperative multi-cell multiple-input multiple-output (MIMO) scheme for LTE-advanced system to reduce ICI and improve the cell capacity. By sharing information such as data and channel state information (CSI) across multiple evolved NodeBs (eNB) and configuring joint preceding at cooperative transmitters, the ICI may be mitigated or even beneficial. Multi-cell block diagonalization (BD) algorithm is used to coordinate the transmissions across multiple eNBs for downlink. To guarantee fairness of the cell-edge users, round robin (RR) scheduling is applied. Simulation results for downlink show that the proposed multi-cell MIMO scheme can significantly improve the average cell throughput and reduce ICI for the cell-edge users.

New physical layer features of 3GPP LTE release-13 [Industry Perspectives]

Abstract: The worldwide proliferation of versatile mobile devices (e.g., smartphones and tablet computers) over the last few years have clearly changed people’s lifestyles. In parallel, the ever increasing demands of mobile broadband Internet have catalyzed a huge market growth of fourth-generation (4G) cellular services, which is mainly facilitated by radio access technologies including Third Generation Partnership Project (3GPP) Long-Term Evolution (LTE), as well as its enhanced version, LTE-Advanced (LTE-A). Generally speaking, LTE-A is referred to as Release-10 of 3GPP standards, and its achievable performance makes it a true 4G technology according to the definitions given by the International Telecommunication Union (ITU).