{"id":{"repo_id":"rice","oai_identifier":"oai:repository.rice.edu:1911/78579"},"canonical_url":"https://search.dev.ndltd.org/etd/rice/oai:repository.rice.edu:1911/78579","repository":{"repo_id":"rice","name":"Rice University","base_url":"https://repository.rice.edu/server/oai/request"},"display":{"title":"Dual Wi-Fi: Dual Channel Wi-Fi for Congested WLANs with Asymmetric Traffic Loads","abstract":"In many WLANs scenarios, the load transmitted from the AP to the clients (Downlink), far outweighs traffic demand from the clients to the AP (Uplink), thereby yielding traffic asymmetry. Moreover, when many clients associate with a single AP, the clients can cause a disproportional amount of medium contention compared to the AP, producing contention asymmetry. We present Dual Wi-Fi, a MAC architecture and protocol that minimizes MAC overhead by matching spectrum resources to traffic asymmetry. Dual Wi-Fi separates uplink and downlink data traffic into two variable-width independent channels, each allocated in accordance to the network's traffic demand. Our experimental and simulation results demonstrate that Dual Wi-Fi matches downlink vs. uplink throughput ratio to demand ratio within 1\\% under any client density and traffic load. Through this matching capability, Dual Wi-Fi offers unbounded downlink gains as congestion increases, minimizing and in some cases eliminating retransmissions and contention time.","abstract_html":"In many WLANs scenarios, the load transmitted from the AP to the clients (Downlink), far outweighs traffic demand from the clients to the AP (Uplink), thereby yielding traffic asymmetry. Moreover, when many clients associate with a single AP, the clients can cause a disproportional amount of medium contention compared to the AP, producing contention asymmetry. We present Dual Wi-Fi, a MAC architecture and protocol that minimizes MAC overhead by matching spectrum resources to traffic asymmetry. Dual Wi-Fi separates uplink and downlink data traffic into two variable-width independent channels, each allocated in accordance to the network's traffic demand. Our experimental and simulation results demonstrate that Dual Wi-Fi matches downlink vs. uplink throughput ratio to demand ratio within 1\\% under any client density and traffic load. Through this matching capability, Dual Wi-Fi offers unbounded downlink gains as congestion increases, minimizing and in some cases eliminating retransmissions and contention time.","abstract_has_math":false,"creators":["Flores Miranda, Adriana"],"institution":"Rice University","degree_name":"Master of Science","degree_level":"Masters","degree_discipline":"Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Knightly, Edward W."],"committee_chairs":[],"committee_members":["Sabharwal, Ashutosh","Zhong, Lin"],"year":2013,"date_issued":"2013-10-08","date_published":"2013-10-08","updated_at":"2026-07-24T04:10:30Z","subjects":["Traffic Asymmetry","IEEE 802.11","Wireless local area networks","Hotspot","Medium access control (MAC)","Multi-channel random access","Spectrum efficiency"],"languages":["eng"],"rights":["Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/1911/78579","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Knightly, Edward W."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Sabharwal, Ashutosh","Zhong, Lin"]},{"key":"dc:creator","label":"Author","values":["Flores Miranda, Adriana"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-12-04T20:21:33Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-12-04T20:21:33Z"]},{"key":"dc:date.issued","label":"Date","values":["2013-10-08"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Rice University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Traffic Asymmetry","IEEE 802.11","Wireless local area networks","Hotspot","Medium access control (MAC)","Multi-channel random access","Spectrum efficiency"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright is held by the author, unless otherwise indicated. 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Dual Wi-Fi separates uplink and downlink data traffic into two variable-width independent channels, each allocated in accordance to the network's traffic demand. Our experimental and simulation results demonstrate that Dual Wi-Fi matches downlink vs. uplink throughput ratio to demand ratio within 1\\% under any client density and traffic load. Through this matching capability, Dual Wi-Fi offers unbounded downlink gains as congestion increases, minimizing and in some cases eliminating retransmissions and contention time."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Dual Wi-Fi: Dual Channel Wi-Fi for Congested WLANs with Asymmetric Traffic Loads"]}]}],"canonical_facts":{"dc:contributor.advisor":["Knightly, Edward W."],"dc:contributor.committeemember":["Sabharwal, Ashutosh","Zhong, Lin"],"dc:creator":["Flores Miranda, Adriana"],"dc:date.accessioned":["2014-12-04T20:21:33Z"],"dc:date.available":["2014-12-04T20:21:33Z"],"dc:date.issued":["2013-10-08"],"dc:description.abstract":["In many WLANs scenarios, the load transmitted from the AP to the clients (Downlink), far outweighs traffic demand from the clients to the AP (Uplink), thereby yielding traffic asymmetry. Moreover, when many clients associate with a single AP, the clients can cause a disproportional amount of medium contention compared to the AP, producing contention asymmetry. We present Dual Wi-Fi, a MAC architecture and protocol that minimizes MAC overhead by matching spectrum resources to traffic asymmetry. Dual Wi-Fi separates uplink and downlink data traffic into two variable-width independent channels, each allocated in accordance to the network's traffic demand. Our experimental and simulation results demonstrate that Dual Wi-Fi matches downlink vs. uplink throughput ratio to demand ratio within 1\\% under any client density and traffic load. Through this matching capability, Dual Wi-Fi offers unbounded downlink gains as congestion increases, minimizing and in some cases eliminating retransmissions and contention time."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["https://hdl.handle.net/1911/78579"],"dc:language.iso":["eng"],"dc:rights":["Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder."],"dc:subject":["Traffic Asymmetry","IEEE 802.11","Wireless local area networks","Hotspot","Medium access control (MAC)","Multi-channel random access","Spectrum efficiency"],"dc:title":["Dual Wi-Fi: Dual Channel Wi-Fi for Congested WLANs with Asymmetric Traffic Loads"],"dc:type":["Thesis"],"thesis:degree_discipline":["Engineering"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Rice University"]},"updated_at":"2026-07-24T04:10:30Z"}