DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hong, Sung-Tae | - |
dc.contributor.author | Lee, Harim | - |
dc.contributor.author | Kim, Hyoil | - |
dc.contributor.author | Yang, Hyun Jong | - |
dc.date.accessioned | 2021-06-01T05:51:27Z | - |
dc.date.available | 2021-06-01T05:51:27Z | - |
dc.date.created | 2021-02-24 | - |
dc.date.issued | 2019-06 | - |
dc.identifier.issn | 2169-3536 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/105740 | - |
dc.description.abstract | Licensed assisted access LTE (LAA-LTE) aggregates 5 GHz unlicensed bands with LTE's licensed bands via carrier aggregation, and adopts energy detection (ED)-based clear channel assessment (CCA) for protection of coexisting Wi-Fi devices. Since LAA-LTE requires the ED threshold should be set conservatively in the potential presence of Wi-Fi, the spatial spectrum reuse of the LAA-LTE will be much impaired. Such non-flexible thresholding has been introduced mainly due to ED's incapability of differentiating Wi-Fi frames from LTE frames. As a remedy, this paper proposes a lightweight but effective Wi-Fi frame detection method with which the LAA-LTE devices can capture a Wi-Fi preamble by only using the LAA-LTE's own time domain samples while incurring very small latency. Built upon the proposed method, we also propose the Wi-Fi energy tracking algorithm to identify the duration of a Wi-Fi frame, and a dynamic ED threshold selection algorithm. The proposed schemes were evaluated via the MATLAB simulations and USRP-based experiments, through which their efficacy has been confirmed, e.g., Wi-Fi frame detection probability up to 98.7%. Moreover, via extensive NS-3 based simulations with a multi-cell coexistence topology, we further revealed that the proposed mechanism not only enhances the spatial efficiency of the LAA-LTE achieving up to 23.68% more throughput than the legacy LAA-LTE but also protects coexisting Wi-Fi better. | - |
dc.language | English | - |
dc.publisher | Institute of Electrical and Electronics Engineers Inc. | - |
dc.relation.isPartOf | IEEE Access | - |
dc.title | Lightweight Wi-Fi Frame Detection for Licensed Assisted Access LTE | - |
dc.type | Article | - |
dc.identifier.doi | 10.1109/access.2019.2921724 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | IEEE Access, v.7, pp.77618 - 77628 | - |
dc.identifier.wosid | 000473767400001 | - |
dc.citation.endPage | 77628 | - |
dc.citation.startPage | 77618 | - |
dc.citation.title | IEEE Access | - |
dc.citation.volume | 7 | - |
dc.contributor.affiliatedAuthor | Lee, Harim | - |
dc.contributor.affiliatedAuthor | Yang, Hyun Jong | - |
dc.identifier.scopusid | 2-s2.0-85068322814 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | Algorithm design and analysis | - |
dc.subject.keywordAuthor | cellular networks | - |
dc.subject.keywordAuthor | computer simulation | - |
dc.subject.keywordAuthor | wireless LAN | - |
dc.subject.keywordAuthor | LAA-LTE | - |
dc.subject.keywordAuthor | schmidl-cox detection | - |
dc.relation.journalWebOfScienceCategory | Computer Science, Information Systems | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Telecommunications | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Computer Science | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Telecommunications | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
library@postech.ac.kr Tel: 054-279-2548
Copyrights © by 2017 Pohang University of Science ad Technology All right reserved.