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The cause of this shortcoming lies in the inherent complexity and inefficiency of networking abstractions such as routing, medium access control, and store-and-forward packet switching, which coordinate multiple nodes across a wireless network. This research highlight describes a novel networking paradigm that aims to enable a new class of latency-sensitive applications by systematically breaking these abstractions. The paradigm, referred to as a symbol-synchronous bus, has nodes that concurrently transmit optical signals and thus delivers a wireless mesh network with a performance envelope resembling that of a wired bus in terms of deterministic latency and throughput. A physical prototype, called ZERO-WIRE, confirms that symbol-synchronous buses unlock a novel end-to-end performance envelope for wireless mesh networks: our 25-node test bed achieves 19kbps of contention-agnostic goodput, latency under 1 ms for two-byte frames across four hops, jitter on the order of 10\u03bcs of (is, and a base reliability of 99%. These early results suggest a bright future for the under-explored area of optical wireless mesh networks in delivering ubiquitous connectivity through a low-complexity physical layer.<\/jats:p>","DOI":"10.1145\/3583762","type":"journal-article","created":{"date-parts":[[2023,3,23]],"date-time":"2023-03-23T14:41:50Z","timestamp":1679582510000},"page":"93-101","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Symbol-Synchronous Buses: Deterministic, Low-Latency Wireless Mesh Networking with LEDs"],"prefix":"10.1145","volume":"66","author":[{"given":"Jonathan","family":"Oostvogels","sequence":"first","affiliation":[{"name":"imec-DistriNet, KU Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fan","family":"Yang","sequence":"additional","affiliation":[{"name":"imec-DistriNet, KU Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sam","family":"Michiels","sequence":"additional","affiliation":[{"name":"imec-DistriNet, KU Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Danny","family":"Hughes","sequence":"additional","affiliation":[{"name":"imec-DistriNet, KU Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2023,3,23]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2017.1600613"},{"key":"e_1_2_1_2_1","first-page":"2","article-title":"A scalable and efficient approach for obtaining measurements in CAN-based control systems","volume":"4","author":"Andersson B.","year":"2008","unstructured":"Andersson, B., Pereira, N., Elmenreich, W., Tovar, E., Pacheco, F., Cruz, N. 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