{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/90638"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/90638","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"DAPnet: a testbed for measuring the impact of transmission parameters on an 802.11 based dense access point network","abstract":"There are several parameters that influence the performance of a wireless network. In this thesis, we investigate the impact of minimum size of contention window (cwmin), transmission power, and transmission rate on a dense multiAP network. We have built a testbed called DAPnet for this experiment. DAPnet lets us change cwmin, cwmax, transmission rate, transmission power and operating channel of the nodes in the network remotely. The testbed was deployed at the Coordinate Science Lab (CSL) which is a research center at the University of Illinois. This testbed consists of 40 computing devices equipped with ath9k_htc based USB wireless cards. We studied the control flow path of the Linux Networking and ath9k_htc driver to implement the testbed. The system lets us change the parameters of all the transmitting machines by running commands remotely from a controller machine. Our experimental results show how different combination of rate and minimum size of contention window affects the throughput and packet drop rate of the dense access point network that we set up in CSL. We also show a small-scale ideal layout for dense-AP network that can improve the reliability and throughput of a dense-AP network.","abstract_html":"There are several parameters that influence the performance of a wireless network. In this thesis, we investigate the impact of minimum size of contention window (cwmin), transmission power, and transmission rate on a dense multiAP network. We have built a testbed called DAPnet for this experiment. DAPnet lets us change cwmin, cwmax, transmission rate, transmission power and operating channel of the nodes in the network remotely. The testbed was deployed at the Coordinate Science Lab (CSL) which is a research center at the University of Illinois. This testbed consists of 40 computing devices equipped with ath9k_htc based USB wireless cards. We studied the control flow path of the Linux Networking and ath9k_htc driver to implement the testbed. The system lets us change the parameters of all the transmitting machines by running commands remotely from a controller machine. Our experimental results show how different combination of rate and minimum size of contention window affects the throughput and packet drop rate of the dense access point network that we set up in CSL. We also show a small-scale ideal layout for dense-AP network that can improve the reliability and throughput of a dense-AP network.","abstract_has_math":false,"creators":["Aziz, Syeda Persia"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Computer Science","degree_department":null,"school":null,"contributors":["Vaidya, Nitin H."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-07-07T19:57:55Z","date_published":"2016-07-07T19:57:55Z","updated_at":"2026-07-22T22:26:34Z","subjects":["Dense Access Point","802.11","testbed"],"languages":["en"],"rights":["Copyright 2016 Syeda Persia Aziz"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/90638","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Vaidya, Nitin H."]},{"key":"dc:creator","label":"Author","values":["Aziz, Syeda Persia"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2016-07-07T19:57:55Z","2016-04-25","2016-05"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Computer Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Dense Access Point","802.11","testbed"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2016 Syeda Persia Aziz"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/90638"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["There are several parameters that influence the performance of a wireless network. In this thesis, we investigate the impact of minimum size of contention window (cwmin), transmission power, and transmission rate on a dense multiAP network. We have built a testbed called DAPnet for this experiment. DAPnet lets us change cwmin, cwmax, transmission rate, transmission power and operating channel of the nodes in the network remotely. The testbed was deployed at the Coordinate Science Lab (CSL) which is a research center at the University of Illinois. This testbed consists of 40 computing devices equipped with ath9k_htc based USB wireless cards. We studied the control flow path of the Linux Networking and ath9k_htc driver to implement the testbed. The system lets us change the parameters of all the transmitting machines by running commands remotely from a controller machine. Our experimental results show how different combination of rate and minimum size of contention window affects the throughput and packet drop rate of the dense access point network that we set up in CSL. We also show a small-scale ideal layout for dense-AP network that can improve the reliability and throughput of a dense-AP network.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-07-07 without embargo terms","The student, Syeda Aziz, accepted the attached license on 2016-04-25 at 11:25.","The student, Syeda Aziz, submitted this Thesis for approval on 2016-04-25 at 11:37.","This Thesis was approved for publication on 2016-04-25 at 15:44.","DSpace SAF Submission Ingestion Package generated from Vireo submission #9463 on 2016-07-07 at 13:32:53","Made available in DSpace on 2016-07-07T19:57:55Z (GMT). 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DAPnet lets us change cwmin, cwmax, transmission rate, transmission power and operating channel of the nodes in the network remotely. The testbed was deployed at the Coordinate Science Lab (CSL) which is a research center at the University of Illinois. This testbed consists of 40 computing devices equipped with ath9k_htc based USB wireless cards. We studied the control flow path of the Linux Networking and ath9k_htc driver to implement the testbed. The system lets us change the parameters of all the transmitting machines by running commands remotely from a controller machine. Our experimental results show how different combination of rate and minimum size of contention window affects the throughput and packet drop rate of the dense access point network that we set up in CSL. We also show a small-scale ideal layout for dense-AP network that can improve the reliability and throughput of a dense-AP network.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-07-07 without embargo terms","The student, Syeda Aziz, accepted the attached license on 2016-04-25 at 11:25.","The student, Syeda Aziz, submitted this Thesis for approval on 2016-04-25 at 11:37.","This Thesis was approved for publication on 2016-04-25 at 15:44.","DSpace SAF Submission Ingestion Package generated from Vireo submission #9463 on 2016-07-07 at 13:32:53","Made available in DSpace on 2016-07-07T19:57:55Z (GMT). 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