Semi-Random Access in Small Cells With User Priority

Yang Hu; Chongbin Xu; Li Ping

doi:10.1109/LCOMM.2018.2814044

Semi-Random Access in Small Cells With User Priority

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

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Author(s)

Yang Hu
Chongbin Xu
Li Ping

Related Research Unit(s)

Department of Electrical Engineering

Detail(s)

Original language	English
Pages (from-to)	966-969
Journal / Publication	IEEE Communications Letters
Volume	22
Issue number	5
Online published	9 Mar 2018
Publication status	Published - May 2018

Link(s)

DOI	DOI https://doi.org/10.1109/LCOMM.2018.2814044 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85043456885&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(c2fc8f3b-51e0-490f-bf5f-fb4f7f3dfddb).html

Abstract

In a small cell system, centralized control can be a problem for the visiting users (VUs) who randomly enter and leave with high mobility. In this letter, we propose a semi-random access scheme to achieve the coexistence of users with different control modes: Centralized control for local users (LUs) and decentralized control for VUs. We adopt randomized power control and successive interference cancellation techniques to optimize the system within a quality of service (QoS) constraint of LUs. Simulation results show that most VU throughput gain can be achieved at the cost of marginal LUs' outage performance loss. The two types of users can well coexist under a proper QoS constraint, bringing about increased total throughput.