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This comment points out several mathematical errors in the proof of Therorem 3, and gives the correct expression of $B_{3}$<alternatives><inline-graphic xlink:type="simple" xlink:href="fang-ieq1-2312920.gif"/> </alternatives>.
The IEEE 802.11e has defined a standard for power saving in mobile terminals by introducing sleep mode operation for conserving power during traffic idle period. In this paper we present M/G/1 type vacation model with non exhaustive service discipline. A vacation period can be defined as the period in between two consecutive service period, where as the vacation can be interpreted as sleep interval...
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