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With video being a major player in Internet traffic and undergoing exponential growth in wireless domain, we argue for the need of a Video-aware MAC (VMAC) to significantly improve the throughput and delay performance of real-time video streaming service. VMAC makes two changes to optimize wireless LAN for video traffic: (a) It incorporates a Perceptual-Error-Tolerance (PET) to the MAC frames by reducing MAC retransmissions while minimizing any impact on perceptual video quality; and (b) It uses a group NACK-based Adaptive Window (NAW) of MAC frames to improve both throughput and delay performance in varying channel conditions. Through simulations and experiments, we observe 56--89% improvement in throughput and 34--48% improvement in delay performance over legacy DCF and 802.11e schemes. VMAC also shows 15--78% improvement over legacy schemes with multiple clients.<\/jats:p>","DOI":"10.1145\/2744412","type":"journal-article","created":{"date-parts":[[2015,6,2]],"date-time":"2015-06-02T18:19:47Z","timestamp":1433269187000},"page":"1-24","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["Efficient MAC for Real-Time Video Streaming over Wireless LAN"],"prefix":"10.1145","volume":"11","author":[{"given":"Eilwoo","family":"Baik","sequence":"first","affiliation":[{"name":"University of California, Davis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amit","family":"Pande","sequence":"additional","affiliation":[{"name":"University of California, Davis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Prasant","family":"Mohapatra","sequence":"additional","affiliation":[{"name":"University of California, Davis"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2015,6,2]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"AppleTV. 2014. 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