A Fair Listen-Before-Talk Algorithm for Coexistence of LTE-U and WLAN
A Fair Listen-Before-Talk Algorithm for Coexistence of LTE-U and WLAN
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DOI：
10.1109/tvt.2016.2533627
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发表时间：
2016-12-01
影响因子：
6.8
通讯作者：
Pack, Sangheon
中科院分区：
文献类型：
--
作者：
Ko, Haneul;Lee, Jaewook;Pack, Sangheon
最近，对在未授权频带（即，LTE-U）。然而，由于LTE和无线局域网（WLAN）被设计为在不同的频带中操作，因此它们没有共存机制，这导致显著的性能下降。特别地，由于LTE在传输之前不感测信道空闲，因此LTE干扰严重影响WLAN操作。为了解决这个问题，我们提出了一个公平的先说先试（F-LBT）算法，用于LTE-U和WLAN在未授权频带中的共存。F-LBT联合考虑系统总吞吐量以及LTE-U和WLAN之间的公平性，然后为WLAN分配适当的空闲时段。评估结果表明，F-LBT可以提高系统的总吞吐量，同时提供LTE-U和WLAN之间的公平性。
Recently, there has been an increasing interest in operating long-term evolution (LTE) in unlicensed bands (i.e., LTE-U). However, since LTE and wireless local area networks (WLANs) are designed to operate in different bands, they have no coexistence mechanism, which leads to significant performance degradation. In particular, since LTE does not sense channel vacancy prior to transmissions, the LTE interference severely affects the WLAN operation. To address this problem, we propose a fair listen-before-talk (F-LBT) algorithm for coexistence of LTE-U and WLAN in unlicensed bands. F-LBT jointly considers the total system throughput and the fairness between LTE-U and WLAN and then allocates an appropriate idle period for WLAN. Evaluation results demonstrate that F-LBT can improve the total system throughput while providing the fairness between LTE-U and WLAN.