@TechReport{Syed07a,
	author = 	"Affan A. Syed and Wei Ye and John Heidemann",
	title = 	"T-Lohi: A New Class of MAC Protocols for
                         Underwater Acoustic Sensor Networks",
	institution = 	"USC/Information Sciences Institute",
	year = 		2007,
	sortdate = "2007-04-01",
	project = "ilense, snuse, cisoft",
	jsubject = "chronological",
	number =	"ISI-TR-2007-638b",
	month =		apr,
	location =	"johnh: pafile",
	note = "Technical report originally released April 2007,
                         updated July 2007",
	keywords =	"Lohi, underwater MAC, acoustic networks",
	supporting = "The simulator used in this paper is available at
                         \url{http://www.isi.edu/ilense/software/}.",
	myorganization =	"USC/Information Sciences Institute",
	copyrightholder = "authors",
	url = "http://www.isi.edu/%7ejohnh/PAPERS/Syed07a.html",
	pdfurl = "http://www.isi.edu/%7ejohnh/PAPERS/Syed07a.pdf",
	abstract = "
This paper introduces T-Lohi, a new class of distributed and
energy-efficient media-access protocols (MAC) for underwater acoustic
sensor networks (UWSN).  MAC design for UWSN faces significant
challenges. For example, acoustic communication suffers from latencies
five orders-of-magnitude larger than radio communication, so a naive
CSMA MAC would require very long listen time resulting in low
throughput and poor energy efficiency.  In this paper, we first
identify unique characteristics in underwater networking that may
affect all MACs, such as space-time uncertainty and deafness
conditions.  We then develop T-Lohi employing a novel tone-based
reservation mechanism that exploits space-time uncertainty and high
latency to detect collisions and \emph{count contenders}, achieving
good throughput across all offered loads.  It employs our low-power
wake-up receiver to significantly reduce energy consumption.  Finally,
we evaluate design choices and protocol performance through extensive
simulation.  The results show that the energy cost of packet
transmission is within~3--9\% of optimal, that our protocols achieve
good channel utilization, within~30\% of the theoretical maximum.  We
also show that our protocols are stable and fair under both low and
very high offered loads.
",
}

%	title = "Understanding Spatio-Temporal Uncertainty in Medium Access with {ALOHA} Protocols",

{"_id":"WEskAhbizoTWF6rF2","bibbaseid":"syed-ye-heidemann-tlohianewclassofmacprotocolsforunderwateracousticsensornetworks-2007","author_short":["Syed, A. A.","Ye, W.","Heidemann, J."],"bibdata":{"bibtype":"techreport","type":"techreport","author":[{"firstnames":["Affan","A."],"propositions":[],"lastnames":["Syed"],"suffixes":[]},{"firstnames":["Wei"],"propositions":[],"lastnames":["Ye"],"suffixes":[]},{"firstnames":["John"],"propositions":[],"lastnames":["Heidemann"],"suffixes":[]}],"title":"T-Lohi: A New Class of MAC Protocols for Underwater Acoustic Sensor Networks","institution":"USC/Information Sciences Institute","year":"2007","sortdate":"2007-04-01","project":"ilense, snuse, cisoft","jsubject":"chronological","number":"ISI-TR-2007-638b","month":"April","location":"johnh: pafile","note":"Technical report originally released April 2007, updated July 2007","keywords":"Lohi, underwater MAC, acoustic networks","supporting":"The simulator used in this paper is available at ˘rlhttp://www.isi.edu/ilense/software/.","myorganization":"USC/Information Sciences Institute","copyrightholder":"authors","url":"http://www.isi.edu/%7ejohnh/PAPERS/Syed07a.html","pdfurl":"http://www.isi.edu/%7ejohnh/PAPERS/Syed07a.pdf","abstract":"This paper introduces T-Lohi, a new class of distributed and energy-efficient media-access protocols (MAC) for underwater acoustic sensor networks (UWSN). MAC design for UWSN faces significant challenges. For example, acoustic communication suffers from latencies five orders-of-magnitude larger than radio communication, so a naive CSMA MAC would require very long listen time resulting in low throughput and poor energy efficiency. In this paper, we first identify unique characteristics in underwater networking that may affect all MACs, such as space-time uncertainty and deafness conditions. We then develop T-Lohi employing a novel tone-based reservation mechanism that exploits space-time uncertainty and high latency to detect collisions and \\emphcount contenders, achieving good throughput across all offered loads. It employs our low-power wake-up receiver to significantly reduce energy consumption. Finally, we evaluate design choices and protocol performance through extensive simulation. The results show that the energy cost of packet transmission is within 3–9% of optimal, that our protocols achieve good channel utilization, within 30% of the theoretical maximum. We also show that our protocols are stable and fair under both low and very high offered loads. ","bibtex":"@TechReport{Syed07a,\n\tauthor = \t\"Affan A. Syed and Wei Ye and John Heidemann\",\n\ttitle = \t\"T-Lohi: A New Class of MAC Protocols for\n Underwater Acoustic Sensor Networks\",\n\tinstitution = \t\"USC/Information Sciences Institute\",\n\tyear = \t\t2007,\n\tsortdate = \"2007-04-01\",\n\tproject = \"ilense, snuse, cisoft\",\n\tjsubject = \"chronological\",\n\tnumber =\t\"ISI-TR-2007-638b\",\n\tmonth =\t\tapr,\n\tlocation =\t\"johnh: pafile\",\n\tnote = \"Technical report originally released April 2007,\n updated July 2007\",\n\tkeywords =\t\"Lohi, underwater MAC, acoustic networks\",\n\tsupporting = \"The simulator used in this paper is available at\n \\url{http://www.isi.edu/ilense/software/}.\",\n\tmyorganization =\t\"USC/Information Sciences Institute\",\n\tcopyrightholder = \"authors\",\n\turl = \"http://www.isi.edu/%7ejohnh/PAPERS/Syed07a.html\",\n\tpdfurl = \"http://www.isi.edu/%7ejohnh/PAPERS/Syed07a.pdf\",\n\tabstract = \"\nThis paper introduces T-Lohi, a new class of distributed and\nenergy-efficient media-access protocols (MAC) for underwater acoustic\nsensor networks (UWSN). MAC design for UWSN faces significant\nchallenges. For example, acoustic communication suffers from latencies\nfive orders-of-magnitude larger than radio communication, so a naive\nCSMA MAC would require very long listen time resulting in low\nthroughput and poor energy efficiency. In this paper, we first\nidentify unique characteristics in underwater networking that may\naffect all MACs, such as space-time uncertainty and deafness\nconditions. We then develop T-Lohi employing a novel tone-based\nreservation mechanism that exploits space-time uncertainty and high\nlatency to detect collisions and \\emph{count contenders}, achieving\ngood throughput across all offered loads. It employs our low-power\nwake-up receiver to significantly reduce energy consumption. Finally,\nwe evaluate design choices and protocol performance through extensive\nsimulation. The results show that the energy cost of packet\ntransmission is within~3--9\\% of optimal, that our protocols achieve\ngood channel utilization, within~30\\% of the theoretical maximum. We\nalso show that our protocols are stable and fair under both low and\nvery high offered loads.\n\",\n}\n\n%\ttitle = \"Understanding Spatio-Temporal Uncertainty in Medium Access with {ALOHA} Protocols\",\n","author_short":["Syed, A. A.","Ye, W.","Heidemann, J."],"bibbaseid":"syed-ye-heidemann-tlohianewclassofmacprotocolsforunderwateracousticsensornetworks-2007","role":"author","urls":{"Paper":"http://www.isi.edu/%7ejohnh/PAPERS/Syed07a.html"},"keyword":["Lohi","underwater MAC","acoustic networks"],"metadata":{"authorlinks":{}}},"bibtype":"techreport","biburl":"https://bibbase.org/f/dHevizJoWEhWowz8q/johnh-2023-2.bib","dataSources":["YLyu3mj3xsBeoqiHK","fLZcDgNSoSuatv6aX","fxEParwu2ZfurScPY","7nuQvtHTqKrLmgu99"],"keywords":["lohi","underwater mac","acoustic networks"],"search_terms":["lohi","new","class","mac","protocols","underwater","acoustic","sensor","networks","syed","ye","heidemann"],"title":"T-Lohi: A New Class of MAC Protocols for Underwater Acoustic Sensor Networks","year":2007}