Pub Date : 2004-05-14DOI: 10.1109/WTS.2004.1319564
F. De Rango, G. Aloi, S. Marano
A new rate adaptation algorithm named the average degradation degree fair adaptation algorithm is defined and proposed for wireless networks with mobile hosts. It uses a novel quality of service index that expresses the degradation degree suffered by data packet flows in terms of bandwidth. The aim of the proposed algorithm is to distribute the effects of QoS degradation fairly among the cells visited by mobile hosts. The proposed algorithm has been compared with three schemes studied in the literature: fair adaptation; minimum adaptation; average fair adaptation. The performances are evaluated inside the single cell (intra-cell) and among the cells (inter-cell) in which the mobile host moves. Simulations results show that a reduction of the QoS degradation of flows and a preservation of inter- and intra-cell fairness properties are obtained, adding only a slight control overhead.
{"title":"An efficient rate adaptation scheme in wireless mobile networks","authors":"F. De Rango, G. Aloi, S. Marano","doi":"10.1109/WTS.2004.1319564","DOIUrl":"https://doi.org/10.1109/WTS.2004.1319564","url":null,"abstract":"A new rate adaptation algorithm named the average degradation degree fair adaptation algorithm is defined and proposed for wireless networks with mobile hosts. It uses a novel quality of service index that expresses the degradation degree suffered by data packet flows in terms of bandwidth. The aim of the proposed algorithm is to distribute the effects of QoS degradation fairly among the cells visited by mobile hosts. The proposed algorithm has been compared with three schemes studied in the literature: fair adaptation; minimum adaptation; average fair adaptation. The performances are evaluated inside the single cell (intra-cell) and among the cells (inter-cell) in which the mobile host moves. Simulations results show that a reduction of the QoS degradation of flows and a preservation of inter- and intra-cell fairness properties are obtained, adding only a slight control overhead.","PeriodicalId":242981,"journal":{"name":"2004 Symposium on Wireless Telecommunications","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121823098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-05-14DOI: 10.1109/WTS.2004.1319569
Y. Li, N. Bambos
We investigate a power-controlled transmission scheme for streaming media traffic over wireless links. The server (source) transmits encoded media packets to a client (user) over a fluctuating wireless channel. The client stores received packets into a fixed-size buffer and plays them out at a constant rate. Due to random channel interference, the source needs to adapt its transmission power and rate according to the channel conditions to guarantee a certain level of received media quality of service (QoS). The latter is primarily measured by the distortion due to packets missing their playtime deadlines at the receiver. The goal is to find an efficient power/rate control policy to minimize the average power (energy) consumption for a required quality level of media reception. We formulate a simple, yet powerful, model for media streaming over wireless links, allowing identification and characterization of optimal power/rate control policies, using dynamic programming methodologies. Furthermore, having observed the structural properties of optimal policies, we propose two practical heuristic algorithms for power and rate control. The proposed algorithms are extensively simulated and significant performance improvements are observed when compared to standard benchmarks.
{"title":"Power-controlled wireless links for media streaming applications","authors":"Y. Li, N. Bambos","doi":"10.1109/WTS.2004.1319569","DOIUrl":"https://doi.org/10.1109/WTS.2004.1319569","url":null,"abstract":"We investigate a power-controlled transmission scheme for streaming media traffic over wireless links. The server (source) transmits encoded media packets to a client (user) over a fluctuating wireless channel. The client stores received packets into a fixed-size buffer and plays them out at a constant rate. Due to random channel interference, the source needs to adapt its transmission power and rate according to the channel conditions to guarantee a certain level of received media quality of service (QoS). The latter is primarily measured by the distortion due to packets missing their playtime deadlines at the receiver. The goal is to find an efficient power/rate control policy to minimize the average power (energy) consumption for a required quality level of media reception. We formulate a simple, yet powerful, model for media streaming over wireless links, allowing identification and characterization of optimal power/rate control policies, using dynamic programming methodologies. Furthermore, having observed the structural properties of optimal policies, we propose two practical heuristic algorithms for power and rate control. The proposed algorithms are extensively simulated and significant performance improvements are observed when compared to standard benchmarks.","PeriodicalId":242981,"journal":{"name":"2004 Symposium on Wireless Telecommunications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126999815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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