DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Sang Yup | ko |
dc.contributor.author | Kim, Myung-Chul | ko |
dc.contributor.author | Lee, Ben | ko |
dc.contributor.author | Kang, Sung-Won | ko |
dc.date.accessioned | 2015-05-22T02:23:50Z | - |
dc.date.available | 2015-05-22T02:23:50Z | - |
dc.date.created | 2015-05-20 | - |
dc.date.created | 2015-05-20 | - |
dc.date.issued | 2015-03 | - |
dc.identifier.citation | COMPUTER NETWORKS, v.79, pp.133 - 147 | - |
dc.identifier.issn | 1389-1286 | - |
dc.identifier.uri | http://hdl.handle.net/10203/198577 | - |
dc.description.abstract | More and more mobile devices such as smartphones are being used with IEEE 802.11 wireless LANs (WLANs or Wi-Fi). However, mobile users are still experiencing poor service quality on the move due to the large handoff delay and packet loss problem. In order to reduce the delay, a new handoff scheme using the geomagnetic sensor embedded in mobile devices is proposed in this paper. The proposed scheme predicts the movement direction of a Mobile Station (MS) from the currently associated Access Point (AP) and performs active scanning with a reduced number of channels. In terms of the packet loss, a lightweight retransmission protocol is also proposed to minimize lost packets on Wi-Fi without producing a lot of acknowledgement packets. The proposed approaches are implemented on Android smartphones, and their performance is evaluated in a real indoor WLAN environment. The evaluation results demonstrate that the proposed schemes maintain seamless quality for real-time video even in an environment with frequent handoffs. Note that the proposed schemes are a client-only solution and do not require modification of the existing APs, which renders them very practical. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | WIRELESS LAN | - |
dc.subject | IEEE-802.11 | - |
dc.subject | NETWORKS | - |
dc.title | Fast Directional Handoff and lightweight retransmission protocol for enhancing multimedia quality in indoor WLANs | - |
dc.type | Article | - |
dc.identifier.wosid | 000353070900010 | - |
dc.identifier.scopusid | 2-s2.0-84921961943 | - |
dc.type.rims | ART | - |
dc.citation.volume | 79 | - |
dc.citation.beginningpage | 133 | - |
dc.citation.endingpage | 147 | - |
dc.citation.publicationname | COMPUTER NETWORKS | - |
dc.identifier.doi | 10.1016/j.comnet.2014.12.019 | - |
dc.contributor.localauthor | Kim, Myung-Chul | - |
dc.contributor.localauthor | Kang, Sung-Won | - |
dc.contributor.nonIdAuthor | Lee, Ben | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | IEEE 802.11 | - |
dc.subject.keywordAuthor | Fast Directional Handoff | - |
dc.subject.keywordAuthor | Geomagnetic sensor | - |
dc.subject.keywordAuthor | Digital compass | - |
dc.subject.keywordAuthor | Lightweight retransmission protocol | - |
dc.subject.keywordPlus | WIRELESS LAN | - |
dc.subject.keywordPlus | IEEE-802.11 | - |
dc.subject.keywordPlus | NETWORKS | - |
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