Performance Evaluation for Local Anchor-Based Dual Connectivity in 5G User-Centric Network

Zhang, Hongtao; Meng, Na; Liu, Yang; Zhang, Xing

doi:10.1109/access.2016.2606420

Cited by 23 publications

(16 citation statements)

References 14 publications

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“…UCN lets a user feel like that a network is always following it. Performance evaluation of UCN was conducted in [5, 6], where key procedures for improving the user's mobility robustness are provided. Zhang et al [5] was the first to propose a local anchor‐based dual connectivity architecture for UCN in order that user‐centric service will follow each user's movement.…”

Section: Introductionmentioning

confidence: 99%

Spatial correlation based analysis of power control in user‐centric 5G networks

2018

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Section: Introductionmentioning

confidence: 99%

Spatial correlation based analysis of power control in user‐centric 5G networks

2018

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“…In [2], a local anchor-based user-centric network (UCN) architecture, in which the DC technique is applied, is presented. The proposed architecture aims to examine the performance improvement potential of small cell use in UCN.…”

Section: A Dual Connectivitymentioning

confidence: 99%

“…Deploying a large number of small cells into a HetNet leads to increase cell edges and greater inter-cellular interaction. This causes frequent HO events and more radio link failures (RLF) [2]. However, if a user connects to a neighboring cell for a short time and then bounces back the former source cell, this event is called ping-pong HO (PPHO).…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Survey on Mobility Management in 5G Heterogeneous Networks: Architectures, Challenges and Solutions

et al. 2020

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With the rapid increase in the number of mobile users, wireless access technologies are evolving to provide mobile users with high data rates and support new applications that include both human and machine-type communications. Heterogeneous networks (HetNets), created by the joint installation of macro cells and a large number of densely deployed small cells, are considered an important solution to deal with the increasing network capacity demands and provide high coverage to wireless users in future fifth generation (5G) wireless networks. Due to the increasing complexity of network topology in 5G HetNets with the integration of many different base station types, in 5G architecture mobility management has many challenges. Intense deployment of small cells, along with many advantages it provides, brings important mobility management problems such as frequent handover (HO), HO failure, HO delays, ping-pong HO and high energy consumption which will result in lower user experience and heavy signal loads. In this paper, we provide a comprehensive study on the mobility management in 5G HetNet in terms of radio resource control, the initial access and registration procedure of the user equipment (UE) to the network, the paging procedure that provides the location of the UE within the network, connected mode mobility management schemes and beam level mobility and beam management. Besides, this paper addresses the challenges and suggest possible solutions for the 5G mobility management.

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“…5: if ∃u ∈ U, µ(u) / ∈ K and Ω u /Q < T s , then 6: µ(u) = u, 7: else 8: Assign u to the MBS. 9: end if the feasibility condition in (28b). Similarly, we can define the preference profile of an SBS k,…”

Section: Algorithm 1 Da Algorithm For Single-period Association Betwementioning

confidence: 99%

Caching Meets Millimeter Wave Communications for Enhanced Mobility Management in 5G Networks

Semiari

Saad

Bennis

et al. 2018

IEEE Trans. Wireless Commun.

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One of the most promising approaches to overcome the uncertainty and dynamic channel variations of millimeter wave (mmW) communications is to deploy dual-mode base stations that integrate both mmW and microwave (µW) frequencies. If properly designed, such dual-mode base stations can enhance mobility and handover in highly mobile wireless environments. In this paper, a novel approach for analyzing and managing mobility in joint µW-mmW networks is proposed. The proposed approach leverages device-level caching along with the capabilities of dual-mode small base stations (SBSs) to minimize handover failures, reduce inter-frequency measurement energy consumption, and provide seamless mobility in emerging dense heterogeneous networks. First, fundamental results on the caching capabilities, including caching probability and cache duration are derived for the proposed dual-mode network scenario. Second, the average achievable rate of caching is derived for mobile users. Moreover, the impact of caching on the number of handovers (HOs), energy consumption, and the average handover failure (HOF) is analyzed. Then, the proposed cache-enabled mobility management problem is formulated as a dynamic matching game between mobile user equipments (MUEs) and SBSs. The goal of this game is to find a distributed handover mechanism that, under network constraints on HOFs and limited cache sizes, allows each MUE to choose between: a) executing an HO to a target SBS, b) being connected to the macrocell base station (MBS), or c) perform a transparent HO by using the cached content. The formulated matching game inherently captures the dynamics of the mobility management problem caused by HOFs. To solve this dynamic matching problem, a novel algorithm is proposed and its convergence to a two-sided dynamically stable HO policy for MUEs and target SBSs is proved. Numerical results corroborate the analytical derivations and show that the proposed solution will provides significant reductions in both the HOF and energy consumption of MUEs, resulting in an enhanced mobility management for heterogeneous wireless networks with mmW capabilities.

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Performance Evaluation for Local Anchor-Based Dual Connectivity in 5G User-Centric Network

Cited by 23 publications

References 14 publications

Spatial correlation based analysis of power control in user‐centric 5G networks

Spatial correlation based analysis of power control in user‐centric 5G networks

A Comprehensive Survey on Mobility Management in 5G Heterogeneous Networks: Architectures, Challenges and Solutions

Caching Meets Millimeter Wave Communications for Enhanced Mobility Management in 5G Networks

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