{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,12]],"date-time":"2026-02-12T14:59:40Z","timestamp":1770908380672,"version":"3.50.1"},"reference-count":49,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2017,12,12]],"date-time":"2017-12-12T00:00:00Z","timestamp":1513036800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Online Research Fund of Ministry of Education","award":["2017YB135"],"award-info":[{"award-number":["2017YB135"]}]},{"name":"Feature Prestigious Construction","award":["XJP2013032"],"award-info":[{"award-number":["XJP2013032"]}]},{"name":"Project of Shandong Province Higher","award":["J17KA154"],"award-info":[{"award-number":["J17KA154"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Vehicular Ad Hoc Networks (VANETs) employ multichannel to provide a variety of safety and non-safety applications, based on the IEEE 802.11p and IEEE 1609.4 protocols. The safety applications require timely and reliable transmissions, while the non-safety applications require efficient and high throughput. In the IEEE 1609.4 protocol, operating interval is divided into alternating Control Channel (CCH) interval and Service Channel (SCH) interval with an identical length. During the CCH interval, nodes transmit safety-related messages and control messages, and Enhanced Distributed Channel Access (EDCA) mechanism is employed to allow four Access Categories (ACs) within a station with different priorities according to their criticality for the vehicle\u2019s safety. During the SCH interval, the non-safety massages are transmitted. An analytical model is proposed in this paper to evaluate performance, reliability and efficiency of the IEEE 802.11p and IEEE 1609.4 protocols. The proposed model improves the existing work by taking serval aspects and the character of multichannel switching into design consideration. Extensive performance evaluations based on analysis and simulation help to validate the accuracy of the proposed model and analyze the capabilities and limitations of the IEEE 802.11p and IEEE 1609.4 protocols, and enhancement suggestions are given.<\/jats:p>","DOI":"10.3390\/s17122890","type":"journal-article","created":{"date-parts":[[2017,12,12]],"date-time":"2017-12-12T13:35:00Z","timestamp":1513085700000},"page":"2890","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["Performance Analysis of the IEEE 802.11p Multichannel MAC Protocol in Vehicular Ad Hoc Networks"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3897-7629","authenticated-orcid":false,"given":"Caixia","family":"Song","sequence":"first","affiliation":[{"name":"College of Science and Information, Qingdao Agricultural University, Qingdao 266109, China"}]}],"member":"1968","published-online":{"date-parts":[[2017,12,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"584","DOI":"10.1109\/SURV.2011.061411.00019","article-title":"Vehicular Networking: A Survey and Tutorial on Requirements, Architectures, Challenges, Standards and Solutions","volume":"13","author":"Karagiannis","year":"2011","journal-title":"IEEE Commun. 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