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arXiv 0802.2836cs.DScs.NI
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最小化无线收集问题中的流时间

Minimizing Flow Time in the Wireless Gathering Problem

Vincenzo Bonifaci, Peter Korteweg, Alberto Marchetti-Spaccamela, Leen Stougie

摘要:

我们解决的问题,有效的数据收集在无线网络中,通过多跳通信。我们专注于最小化数据包的最大流动时间的目标。我们证明了,没有多项式时间的算法,这个问题可以有近似比小于$Ω(m^{1/3)$时,$m$数据包必须发送,除非$P = NP$。然后,我们使用资源增加来评估FIFO类策略的性能。我们证明了这种策略是5速最优的,即,如果我们允许该算法以比我们比较的最优解高5倍的速度传输数据,则其成本保持在最优成本内。

英文摘要:

We address the problem of efficient data gathering in a wireless network through multi-hop communication. We focus on the objective of minimizing the maximum flow time of a data packet. We prove that no polynomial time algorithm for this problem can have approximation ratio less than $Ω(m^{1/3)$ when $m$ packets have to be transmitted, unless $P = NP$. We then use resource augmentation to assess the performance of a FIFO-like strategy. We prove that this strategy is 5-speed optimal, i.e., its cost remains within the optimal cost if we allow the algorithm to transmit data at a speed 5 times higher than that of the optimal solution we compare to.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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