Evaluating the Importance of Concurrent Packet Communication in Wireless Networks. Son, D., Krishnamachari, B., & Heidemann, J. Technical Report ISI-TR-639, USC/Information Sciences Institute, April, 2007. ![Evaluating the Importance of Concurrent Packet Communication in Wireless Networks [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex Nearly all wireless media-access (MAC) protocols are designed today with the very conservative assumption that concurrent transmissions should be prevented, because sender-receiver pairs within radio range sending on the same channel will corrupt each other's communication. While recent work has suggested that channel capture effects can be significant in reality, this paper presents the first systematic study to quantify the impact of these effects on the ability to have concurrent communications among two sender-receiver pairs that are within range of each other. We first derive a simple decision rule to determine when such concurrent communication is possible while minimizing transmission power. Through a comprehensive set of realistic simulations, we then systematically quantify the feasibility of concurrent communication with and without transmission power control as many radio and environmental parameters vary, including node position, mean and variance of path loss, signal-to-interference-plus-noise-ratio threshold ($SINR_θ$) for packet reception, granularity and range of transmission power control. Our simulations show that often, 40–75% of the time depending primarily on distance and location, two pairs of nodes can communicate concurrently without loss even if both transmitters are within the radio sensing range of both receivers. We can observe large CTXable region with fixed transmit power, but dynamic power control significantly improves concurrent communications. Finally, at least one transmitter can almost always capture the channel in the event of concurrent transmissions, so the cost of failed attempts to CTX are minimal. We validate our simulations with testbed experiments using MicaZ motes, confirming that concurrent communication is possible to a very significant extent in real systems. These results suggest that CSMA with RTS/CTS is overly conservative and there are often gains to be realized by abandoning it.
@TechReport{Son07a,
author = "Dongjin Son and Bhaskar Krishnamachari and John Heidemann",
title = "Evaluating the Importance of Concurrent Packet Communication in Wireless Networks",
institution = "USC/Information Sciences Institute",
year = 2007,
sortdate = "2007-04-01",
project = "ilense, macss",
jsubject = "wireless_propagation",
number = "ISI-TR-639",
month = apr,
location = "johnh: pafile",
keywords = "sensornets, 802.11, rts-cts, concurrent
packet transmission",
location = "johnh: pafile",
url = "http://www.isi.edu/%7ejohnh/PAPERS/Son07a.html",
pdfurl = "http://www.isi.edu/%7ejohnh/PAPERS/Son07a.pdf",
copyrightholder = "authors",
myorganization = "USC/Information Sciences Institute",
abstract = "
Nearly all wireless media-access (MAC) protocols are designed today
with the very conservative assumption that concurrent transmissions
should be prevented, because sender-receiver pairs within radio range
sending on the same channel will corrupt each other's communication.
While recent work has suggested that channel capture effects can be
significant in reality, this paper presents the first systematic study
to quantify the impact of these effects on the ability to have
concurrent communications among two sender-receiver pairs that are
within range of each other. We first derive a simple decision rule to
determine when such concurrent communication is possible while
minimizing transmission power. Through a comprehensive set of
realistic simulations, we then systematically quantify the feasibility
of concurrent communication with and without transmission power
control as many radio and environmental parameters vary, including
node position, mean and variance of path loss,
signal-to-interference-plus-noise-ratio threshold ($SINR_\theta$) for
packet reception, granularity and range of transmission power
control. Our simulations show that often, 40--75\% of the time
depending primarily on distance and location, two pairs of nodes can
communicate concurrently without loss even if both transmitters are
within the radio sensing range of both receivers. We can observe
large CTXable region with fixed transmit power, but dynamic power
control significantly improves concurrent communications. Finally, at
least one transmitter can almost always capture the channel in the
event of concurrent transmissions, so the cost of failed attempts to
CTX are minimal. We validate our simulations with testbed experiments
using MicaZ motes, confirming that concurrent communication is
possible to a very significant extent in real systems. These results
suggest that CSMA with RTS/CTS is overly conservative and there are
often gains to be realized by abandoning it.
",
}
Downloads: 0
{"_id":"CxJeaxys8sxR8AbPp","bibbaseid":"son-krishnamachari-heidemann-evaluatingtheimportanceofconcurrentpacketcommunicationinwirelessnetworks-2007","author_short":["Son, D.","Krishnamachari, B.","Heidemann, J."],"bibdata":{"bibtype":"techreport","type":"techreport","author":[{"firstnames":["Dongjin"],"propositions":[],"lastnames":["Son"],"suffixes":[]},{"firstnames":["Bhaskar"],"propositions":[],"lastnames":["Krishnamachari"],"suffixes":[]},{"firstnames":["John"],"propositions":[],"lastnames":["Heidemann"],"suffixes":[]}],"title":"Evaluating the Importance of Concurrent Packet Communication in Wireless Networks","institution":"USC/Information Sciences Institute","year":"2007","sortdate":"2007-04-01","project":"ilense, macss","jsubject":"wireless_propagation","number":"ISI-TR-639","month":"April","location":"johnh: pafile","keywords":"sensornets, 802.11, rts-cts, concurrent packet transmission","url":"http://www.isi.edu/%7ejohnh/PAPERS/Son07a.html","pdfurl":"http://www.isi.edu/%7ejohnh/PAPERS/Son07a.pdf","copyrightholder":"authors","myorganization":"USC/Information Sciences Institute","abstract":"Nearly all wireless media-access (MAC) protocols are designed today with the very conservative assumption that concurrent transmissions should be prevented, because sender-receiver pairs within radio range sending on the same channel will corrupt each other's communication. While recent work has suggested that channel capture effects can be significant in reality, this paper presents the first systematic study to quantify the impact of these effects on the ability to have concurrent communications among two sender-receiver pairs that are within range of each other. We first derive a simple decision rule to determine when such concurrent communication is possible while minimizing transmission power. Through a comprehensive set of realistic simulations, we then systematically quantify the feasibility of concurrent communication with and without transmission power control as many radio and environmental parameters vary, including node position, mean and variance of path loss, signal-to-interference-plus-noise-ratio threshold ($SINR_θ$) for packet reception, granularity and range of transmission power control. Our simulations show that often, 40–75% of the time depending primarily on distance and location, two pairs of nodes can communicate concurrently without loss even if both transmitters are within the radio sensing range of both receivers. We can observe large CTXable region with fixed transmit power, but dynamic power control significantly improves concurrent communications. Finally, at least one transmitter can almost always capture the channel in the event of concurrent transmissions, so the cost of failed attempts to CTX are minimal. We validate our simulations with testbed experiments using MicaZ motes, confirming that concurrent communication is possible to a very significant extent in real systems. These results suggest that CSMA with RTS/CTS is overly conservative and there are often gains to be realized by abandoning it. ","bibtex":"@TechReport{Son07a,\n\tauthor = \"Dongjin Son and Bhaskar Krishnamachari and John Heidemann\",\n\ttitle = \"Evaluating the Importance of Concurrent Packet Communication in Wireless Networks\",\n\tinstitution = \t\"USC/Information Sciences Institute\",\n\tyear = \t\t2007,\n\tsortdate = \"2007-04-01\",\n\tproject = \"ilense, macss\",\n\tjsubject = \"wireless_propagation\",\n\tnumber =\t\"ISI-TR-639\",\n\tmonth =\t\tapr,\n\tlocation =\t\"johnh: pafile\",\n\tkeywords =\t\"sensornets, 802.11, rts-cts, concurrent\n packet transmission\",\n\tlocation =\t\"johnh: pafile\",\n\turl =\t\t\"http://www.isi.edu/%7ejohnh/PAPERS/Son07a.html\",\n\tpdfurl =\t\"http://www.isi.edu/%7ejohnh/PAPERS/Son07a.pdf\",\n\tcopyrightholder = \"authors\",\n\tmyorganization = \t\"USC/Information Sciences Institute\",\n\tabstract = \"\nNearly all wireless media-access (MAC) protocols are designed today\nwith the very conservative assumption that concurrent transmissions\nshould be prevented, because sender-receiver pairs within radio range\nsending on the same channel will corrupt each other's communication.\nWhile recent work has suggested that channel capture effects can be\nsignificant in reality, this paper presents the first systematic study\nto quantify the impact of these effects on the ability to have\nconcurrent communications among two sender-receiver pairs that are\nwithin range of each other. We first derive a simple decision rule to\ndetermine when such concurrent communication is possible while\nminimizing transmission power. Through a comprehensive set of\nrealistic simulations, we then systematically quantify the feasibility\nof concurrent communication with and without transmission power\ncontrol as many radio and environmental parameters vary, including\nnode position, mean and variance of path loss,\nsignal-to-interference-plus-noise-ratio threshold ($SINR_\\theta$) for\npacket reception, granularity and range of transmission power\ncontrol. Our simulations show that often, 40--75\\% of the time\ndepending primarily on distance and location, two pairs of nodes can\ncommunicate concurrently without loss even if both transmitters are\nwithin the radio sensing range of both receivers. We can observe\nlarge CTXable region with fixed transmit power, but dynamic power\ncontrol significantly improves concurrent communications. Finally, at\nleast one transmitter can almost always capture the channel in the\nevent of concurrent transmissions, so the cost of failed attempts to\nCTX are minimal. We validate our simulations with testbed experiments\nusing MicaZ motes, confirming that concurrent communication is\npossible to a very significant extent in real systems. These results\nsuggest that CSMA with RTS/CTS is overly conservative and there are\noften gains to be realized by abandoning it.\n\",\n}\n\n","author_short":["Son, D.","Krishnamachari, B.","Heidemann, J."],"bibbaseid":"son-krishnamachari-heidemann-evaluatingtheimportanceofconcurrentpacketcommunicationinwirelessnetworks-2007","role":"author","urls":{"Paper":"http://www.isi.edu/%7ejohnh/PAPERS/Son07a.html"},"keyword":["sensornets","802.11","rts-cts","concurrent packet transmission"],"metadata":{"authorlinks":{}}},"bibtype":"techreport","biburl":"https://bibbase.org/f/dHevizJoWEhWowz8q/johnh-2023-2.bib","dataSources":["YLyu3mj3xsBeoqiHK","fLZcDgNSoSuatv6aX","fxEParwu2ZfurScPY","7nuQvtHTqKrLmgu99"],"keywords":["sensornets","802.11","rts-cts","concurrent packet transmission"],"search_terms":["evaluating","importance","concurrent","packet","communication","wireless","networks","son","krishnamachari","heidemann"],"title":"Evaluating the Importance of Concurrent Packet Communication in Wireless Networks","year":2007}