{"title":"Time-aware utility-based QoS optimization","authors":"C. Curescu, S. Nadjm-Tehrani","doi":"10.1109/EMRTS.2003.1212731","DOIUrl":"https://doi.org/10.1109/EMRTS.2003.1212731","url":null,"abstract":"This paper presents a time-aware admission control and resource allocation scheme in the context of a future generation mobile network. The quality levels (and their respective utility) of the different connections are specified using discrete resource-utility (R-U) functions. The scheme uses these R-U functions for allocating and reallocating bandwidth to connections, aiming to maximize the accumulated utility of the system. However, different applications react differently to resource reallocations Therefore at each allocation timepoint we take into account the following factors: the age of the connection, a drop (disconnection) penalty and the sensitiveness to reallocation frequency. Finally, we show the superior performance of our approach compared to a recent adaptive bandwidth allocation scheme.","PeriodicalId":120694,"journal":{"name":"15th Euromicro Conference on Real-Time Systems, 2003. Proceedings.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128860434","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}
{"title":"Scheduling techniques for reducing leakage power in hard real-time systems","authors":"Yann-Hang Lee, K. P. Reddy, C. M. Krishna","doi":"10.1109/EMRTS.2003.1212733","DOIUrl":"https://doi.org/10.1109/EMRTS.2003.1212733","url":null,"abstract":"Modern embedded systems are often severely resource-constrained. In current research, the reduction of dynamic power has been the focus. However, with increased chip speed and density in submicron scale, the static (leakage) power consumption has become an increasingly significant fraction of the total. Indeed, a five-fold increase in leakage power per technology generation has been observed. At this pace, leakage power could soon equal dynamic power. In this paper, we investigate scheduling policies to reduce leakage power in real-time systems. We show that with simple scheduling techniques, overall leakage energy can be reduced by an order of magnitude.","PeriodicalId":120694,"journal":{"name":"15th Euromicro Conference on Real-Time Systems, 2003. Proceedings.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121595211","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}