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Yang, Hyun Jong
Advanced Information System Lab (AiS Lab)
Research Interests
  • Wireless communications, signal processing, physical-layer algorithms, communications theory

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Performance Analysis of License Assisted Access LTE with Asymmetric Hidden Terminals

DC FieldValueLanguage
dc.contributor.authorLee, Harimko
dc.contributor.authorKim, Hyoilko
dc.contributor.authorYang, Hyun Jongko
dc.contributor.authorKim, Jeong Takko
dc.contributor.authorBaek, SeungKwonko
dc.date.available2018-01-11T11:29:42Z-
dc.date.created2018-01-11ko
dc.date.issued201809ko
dc.identifier.citationIEEE TRANSACTIONS ON MOBILE COMPUTING, v.17, no.9, pp.2141 - 2154ko
dc.identifier.issn1536-1233ko
dc.identifier.urihttp://scholarworks.unist.ac.kr/handle/201301/23179-
dc.identifier.urihttps://ieeexplore.ieee.org/document/8259016/ko
dc.description.abstractLicense Assisted Access (LAA) LTE (LAA-LTE) is a new type of LTE that aggregates the licensed LTE bands with the unlicensed bands via carrier aggregation. To operate in unlicensed bands, LAA-LTE adopts the listen-before-talk policy and designs its channel access mechanism similar to WLAN's DCF. This paper considers an LAA-LTE eNB coexisting with asymmetric hidden Wi-Fi APs where the eNB can detect the APs while the APs cannot, which is caused by the asymmetric CCA thresholds. The behavior of such a network is modeled by a joint Markov chain (MC), using which steady-state probabilities, throughput, and channel access delay are derived analytically. An extensive evaluation confirms that the proposed analysis correctly models the dynamics of LAA-WLAN coexistence, and identifies important design guidelines for fair coexistence as follows. First, LAA-LTE should enable channel access priority class 4 to exploit its large contention window (CW). Second, LAA-LTE should re-design its CW doubling policy to restore the balance between LAA-LTE and WLAN in throughput and channel access delay. Third, to protect Wi-Fi, the maximum CW stage should be used more times by increasing the retry count.ko
dc.languageENGko
dc.publisherIEEE COMPUTER SOCko
dc.subjectLicense assisted access LTEko
dc.subjectWi-Fiko
dc.subjectlisten-before-talkko
dc.subjectdistributed coordination functionko
dc.subjecthidden terminalko
dc.titlePerformance Analysis of License Assisted Access LTE with Asymmetric Hidden Terminalsko
dc.typeARTICLEko
dc.identifier.pid1211null
dc.identifier.pid1501null
dc.identifier.rimsid29615ko
dc.identifier.scopusid2-s2.0-85041221926ko
dc.identifier.wosid000440844900013ko
dc.type.rimsAko
dc.identifier.doihttp://dx.doi.org/10.1109/TMC.2018.2793230ko
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