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Those shortcomings represent significant limitation in forecasted growth of wireless usage. This is especially important in industrial wireless networks (IWN) where the scalability of wireless MAC is one of the main requirements. In this paper, a novel self\u2010adapting MAC protocol (SaMAC) is defined and mathematically modeled. SaMAC employs constrained countdown freezing enhanced with shifted window mechanism. As a result, the protocol outperforms 802.11 DCF standard as well as shifted contention window (SCW) and constrained countdown freezing (CPCF) protocols in achieved throughput, fairness, and jitter, while keeping simple implementation. Despite protocol\u2019s simple design, it is shown that its mathematical model is extremely complex. For proposed protocol, the assumption of constant contention loss probability, which is normally used for modeling of MAC schemes, does not hold. In the presented multidimensional Markov chain model, a unique iterative method for determining contention loss probability is developed as well as a method for throughput calculation based on such a chain. Accuracy of the presented model is verified in several network scenarios. Considering the performance of the proposed protocol, authors believe that it could be of benefit to deploy it in heavily loaded wireless networks with timing constraints, such as IWNs.<\/jats:p>","DOI":"10.1155\/2018\/6375317","type":"journal-article","created":{"date-parts":[[2018,9,12]],"date-time":"2018-09-12T23:34:17Z","timestamp":1536795257000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Design and Modeling of Self\u2010Adapting MAC (SaMAC) Protocol with Inconstant Contention Loss Probabilities"],"prefix":"10.1155","volume":"2018","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0107-068X","authenticated-orcid":false,"given":"Ante","family":"Kristi\u0107","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1018-3344","authenticated-orcid":false,"given":"Julije","family":"O\u017eegovi\u0107","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9175-2763","authenticated-orcid":false,"given":"Ivan","family":"Ked\u017eo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2018,9,12]]},"reference":[{"key":"e_1_2_10_1_2","unstructured":"802.11-2012 IEEE Standard for Information technology--Telecommunications and information exchange between systems Local and metropolitan area networks--Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications IEEE Std 802.11-2012 2012."},{"volume-title":"Internet of Things: Wireless Sensor Networks","year":"2015","key":"e_1_2_10_2_2"},{"key":"e_1_2_10_3_2","unstructured":"IEEE Guide for Wireless Access in Vehicular Environments (WAVE) - Architecture IEEE Std 1609.0-2013 2014."},{"key":"e_1_2_10_4_2","unstructured":"IEEE Standard for Information technology\u2013 Local and metropolitan area networks\u2013 Specific requirements\u2013 Part 15.1a: Wireless Medium Access Control (MAC) and Physical Layer (PHY) specifications for Wireless Personal Area Networks (WPAN) IEEE Std 802.15.1-2005 2005."},{"key":"e_1_2_10_5_2","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2017.2759725"},{"key":"e_1_2_10_6_2","doi-asserted-by":"publisher","DOI":"10.1109\/mie.2013.2253837"},{"key":"e_1_2_10_7_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMC.2012.128"},{"key":"e_1_2_10_8_2","doi-asserted-by":"publisher","DOI":"10.1109\/TNET.2014.2310815"},{"key":"e_1_2_10_9_2","doi-asserted-by":"crossref","unstructured":"CostaR. 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