User specific cell clustering to improve mobility robustness in 5G ultra-dense cellular networks

Joud, Mohammad; García-Lozano, Mario; Ruíz, Silvia

doi:10.23919/wons.2018.8311661

Cited by 18 publications

(22 citation statements)

References 14 publications

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“…• HO interruption time: is a time period during a HO procedure when the UE cannot exchange user plane packets with any of the BS [31]. The optimum HO procedure should try to minimize the HOF rate, HO delay, HO frequency, HOE time, PP rate, energy consumption, overheads, latencies, packet loss and HO interruption time.…”

Section: E Handover Performance Metricsmentioning

confidence: 99%

“…When addressing the HO in 5G, existing works are usually divided in targeting the reduction of HOFs [3], [31], [62], reduction of HO rate [1], [63], [64], [65], or a combination of both [66]- [70], improving throughput or QoE of the user [1], [31], [71]- [77] and reduction of HO signaling [78], [79]. Other works are devoted to assess the energy saving [62], [80] and load balancing [62], [64].…”

Section: B Literature Surveymentioning

confidence: 99%

“…The works in [3], [31], [62] are devoted to reduce the HOFs. A Markov chain based HO management strategy was proposed in [3].…”

Section: B Literature Surveymentioning

confidence: 99%

“…Compared to the conventional LTE approach, HOFs and delays were reduced to 21 and 52 percent respectively. Estimating the mobility state (low, medium and high speed) of a 5G user for scaling TTT was proposed in [31] to reduce the HO interruption time, HOFs and thus increase the throughput. The proposed method also activates the DC mode if a UE surpasses a certain threshold of velocity.…”

Section: B Literature Surveymentioning

confidence: 99%

“…The works in [31], [71]- [77] are targeted at maximizing the throughput during the HO process. In [71], [72], context-aware RAT selection for the 5G network is proposed to improve the QoE, mainly the user throughput and delays.…”

Section: B Literature Surveymentioning

confidence: 99%

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A Survey on Handover Management: From LTE to NR

2019

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To satisfy the high data demands in future cellular networks, an ultra-densification approach is introduced to shrink the coverage of base station (BS) and improve the frequency reuse. The gain in capacity is expected but at the expense of increased interference, frequent handovers (HOs), increased HO failure (HOF) rates, increased HO delays, increase in ping pong rate, high energy consumption, increased overheads due to frequent HO, high packet losses and bad user experience mostly in high-speed user equipment (UE) scenarios. This paper presents the general concepts of radio access mobility in cellular networks with possible challenges and current research focus. In this article, we provide an overview of HO management in longterm evolution (LTE) and 5G new radio (NR) to highlight the main differences in basic HO scenarios. A detailed literature survey on radio access mobility in LTE, heterogeneous networks (HetNets) and NR is provided. In addition, this paper suggests HO management challenges and enhancing techniques with a discussion on the key points that need to be considered in formulating an efficient HO scheme. INDEX TERMS Radio access mobility, cell selection, handover, LTE, 5G, NR, mobility enhancers. Ph.D. degree in electrical engineering with Aalto University, Finland. He has more than two years, from 2013 to 2015, of professional experience as an RF Planning and Optimization Executive at Wi-Tribe Pakistan Ltd. (Ooredoo Group). During his stay at KFUPM, he was associated with the King Abdullah University of Science and Technology (KAUST), Saudi Arabia, as a Visiting Student and a KFUPM-KAUST Joint Research Initiative. He has been a Researcher with the Helsinki Research Center, Huawei Technologies Finland Oy, since February 2018. His current research interest includes energy-efficient mobility for small-cell overlaid cellular networks. He received the Gold Medal Award for obtaining the first position in the B.Sc. degree. XAVIER GELABERT received the M.Sc. degree in electrical engineering from the KTH Royal Institute of Technology, Stockholm, in 2003, and the joint B.Sc. and M.Sc. degrees in telecom engineering and the Ph.D. degree (Hons.

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Section: E Handover Performance Metricsmentioning

confidence: 99%