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UID:663@lincs.fr
DTSTART;TZID=Europe/Paris:20211020T140000
DTEND;TZID=Europe/Paris:20211020T150000
DTSTAMP:20211021T083812Z
URL:https://www.lincs.fr/events/on-velocity-based-association-policies-for
 -multi-tier-5g-wireless-networks/
SUMMARY:On Velocity-based Association Policies for Multi-tier 5G Wireless
 Networks
DESCRIPTION:Mobility is a key challenge for beam management in 5G cellular
 networks due to the overhead incurred at beam switching and base station
 (BS) handover events. This paper focuses on a network that has a multi-tier
 structure with two types of BSs operating in the same frequency bands\,
 namely macro BSs that are sparser but with higher transmit power\, and
 micro BSs that are denser and with lower transmit power. We propose a
 downlink user association policy which is a function of the user mobility.
 Typically\, high mobility users should associate with macro BSs so as to
 incur less beam switching overhead\, whereas low mobility ones should be
 associated with micro BSs. The main contribution of the paper is a
 formalization of the optimal threshold association policy\, when the
 optimality is understood with respect to the effective Shannon rate. The
 analysis is based on stochastic geometry and on an exact representation of
 the effective Shannon rate of the typical user in this beamforming
 multi-tier context. Two models are discussed. The simplest one focuses on a
 single-user optimization problem. We also discuss a more realistic model
 with bandwidth sharing between all users in the cell. Finally\, we identify
 the mobility and user-density patterns where the velocity-based threshold
 association policy outperforms the classical best mean power association
 policy. In a last part\, we will explore on a generalization of such
 policies by adding a velocity-biased threshold for the two tiers in the
 network and discuss preliminary results for this optimization
 problem.\n\n** This talk is based on a paper accepted at Globecom
 2021.\nHere the SLIDES of this talk
CATEGORIES:Seminars,Youtube
LOCATION:LINCS + Zoom\, 23 avenue d'Italie\, Paris\, 75013\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=23 avenue d'Italie\,
 Paris\, 75013\, France;X-APPLE-RADIUS=100;X-TITLE=LINCS + Zoom:geo:0,0
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TZID:Europe/Paris
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DTSTART:20210328T030000
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