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- 저자 : Melih Bastopcu (검색결과 1 건)
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Minimizing Age of Information with Soft Updates
Melih Bastopcu,Sennur Ulukus 한국통신학회 2019 Journal of communications and networks Vol.21 No.3
We consider an information updating system where aninformation provider and an information receiver engage in an updateprocess over time. Different from the existing literature whereupdates are countable (hard) and take effect either immediatelyor after a delay, but instantaneously in both cases, here updatesstart taking effect right away but gradually over time. We cointhis setting soft updates. When the updating process starts, theage decreases until the soft update period ends. We constrain thenumber of times the information provider and the information receivermeet (number of update periods) and the total duration ofthe update periods. We consider two models for the decrease of ageduring an update period: In the first model, the rate of decrease ofage is proportional to the current age, and in the second model, therate of decrease of age is constant. The first model results in an exponentiallydecaying age, and the second model results in a linearlydecaying age. In both cases, we determine the optimum updatingschemes, by determining the optimum start times and optimum durationsof the updates, subject to the constraints on the number ofupdate periods and the total update duration.
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