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Job checkpointing is a common technique for providing fault tolerance in grid computing environment. The effectiveness of checkpointing depends on the selection of the number of checkpoint interval and the duration of checkpoint interval. Fluctuating checkpointing interval can delay job execution. In this paper, a new fault-tolerant job scheduling algorithm based on checkpointing technique is presented...
In this paper, we consider a new channel probing scheme for opportunistic scheduling in the uplink of orthogonal frequency division multiplexing (OFDM)-based wireless systems. To reduce signaling overhead for the probing, we consider a two-step channel probing process; called pre-probing and mainprobing. Good subchannels are first estimated through the pre-probing process using a probing signal transmitted...
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