Ante Kristic

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In this paper an accurate model of simplified Constrained Priority Countdown Freezing (CPCF) protocol is introduced. In the new model presented, we abandon the often used assumption that the probability of an idle timeslot is constant. By introducing a model that differentiates this probability based on the channel status, i.e. the transmission status of(More)
In the previous work, binary contention protocol, called Binary Priority Countdown, BPC, was introduced. The BPC has the ability to manage the priority space without the need to change the length of the binary countdown round. In this work, we present a development of a new adaptive algorithm, called Collision Rate Adaptive Binary Priority Countdown,(More)
Visible light communication (VLC) is rapidly emerging as a compelling technology for supplementing traditional radio frequency communication, enabling energy-efficient data transmission and offering high downlink speeds. On the other side, traditional Wi-Fi radio access can be used as an uplink solution. In this paper, one such heterogeneous based solution(More)
In this paper a mathematical model of Constrained Priority Countdown Freezing (CPCF) protocol is introduced. In the new model presented, the existing model of simplified CPCF is expanded in order to include the binary exponential backoff (BEB) algorithm. Thus, the behavior of a single CPCF station is modeled using four-dimensional Markov chain. In addition,(More)
Recently, a binary contention protocol, called Binary Priority Countdown, BPC, was introduced. The BPC has the ability to manage the priority space without the need to change the length of the binary countdown round giving it optimization and adaptation capabilities. In this paper, a new protocol called Contention Overhead - Adaptive Binary Priority(More)
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