Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/95607
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Computing | en_US |
dc.creator | Xia, X | en_US |
dc.creator | Li, S | en_US |
dc.creator | Zhang, Y | en_US |
dc.creator | Li, B | en_US |
dc.creator | Zheng, Y | en_US |
dc.creator | Gu, T | en_US |
dc.date.accessioned | 2022-09-22T06:14:04Z | - |
dc.date.available | 2022-09-22T06:14:04Z | - |
dc.identifier.issn | 1063-6692 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/95607 | - |
dc.language.iso | en | en_US |
dc.publisher | Institute of Electrical and Electronics Engineers | en_US |
dc.rights | © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | en_US |
dc.rights | The following publication X. Xia, S. Li, Y. Zhang, B. Li, Y. Zheng and T. Gu, "Enabling Out-of-Band Coordination of Wi-Fi Communications on Smartphones," in IEEE/ACM Transactions on Networking, vol. 27, no. 2, pp. 518-531, April 2019 is available at https://doi.org/10.1109/TNET.2019.2891263 | en_US |
dc.subject | Power saving | en_US |
dc.subject | Screen-off traffic | en_US |
dc.subject | Side-channel | en_US |
dc.subject | Smartphone | en_US |
dc.subject | Wi-Fi coordination | en_US |
dc.title | Enabling out-of-band coordination of Wi-Fi communications on smartphones | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 518 | en_US |
dc.identifier.epage | 531 | en_US |
dc.identifier.volume | 27 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.doi | 10.1109/TNET.2019.2891263 | en_US |
dcterms.abstract | This paper identifies two energy saving opportunities of Wi-Fi interface emerged during smartphone's screen-off periods. Exploiting the opportunities, we propose a new power saving strategy, BackPSM, for screen-off Wi-Fi communications. BackPSM regulates client to send and receive packets in batches and coordinates multiple clients to communicate at different slots (i.e., beacon interval). The core problem in BackPSM is how to coordinate client without incurring extra traffic overheads. To handle the problem, we propose a novel paradigm, Out-of-Band Communication (OBC), for client-to-client direct communications. OBC exploits the Traffic Indication Map (TIM) field of Wi-Fi Beacon to create a free side-channel between clients. It is based upon the observation that a client may control 1 \rightarrow 0 appearing on TIM bit by locally regulating packet receiving operations. We adopt this 1 \rightarrow 0 as the basic signal, and leverage the time length in between two signals to encode information. We demonstrate that OBC can be used to convey coordination information with close to 100% accuracy. We have implemented and evaluated BackPSM on a testbed. The results show that BackPSM can decode the traffic pattern of peers reliably using OBC, and establish collision-free schedules fast to achieve out-of-band coordination of client communications. BackPSM reduces screen-off energy by up to 60% and outperforms the state-of-the-art strategies by 16%-42%. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | IEEE/ACM transactions on networking, Apr. 2019, v. 27, no. 2, 8661511, p. 518-531 | en_US |
dcterms.isPartOf | IEEE/ACM transactions on networking | en_US |
dcterms.issued | 2019-04 | - |
dc.identifier.scopus | 2-s2.0-85064598938 | - |
dc.identifier.artn | 8661511 | en_US |
dc.description.validate | 202209_bcww | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | COMP-0640 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 13910201 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Zheng_Enabling_Out-Of-Band_Coordination.pdf | Pre-Published version | 3.9 MB | Adobe PDF | View/Open |
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