Difference-Set-Based Channel Hopping for Minimum-Delay Blind Rendezvous in Multi-Radio Cognitive Radio Networks
Difference-Set-Based Channel Hopping for Minimum-Delay Blind Rendezvous in Multi-Radio Cognitive Radio Networks
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多无线电认知无线电网络中基于差异集的最小延迟盲会合信道跳变
DOI：
10.1109/tvt.2019.2906455
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发表时间：
2019-03
影响因子：
6.8
通讯作者：
Yongjun Yuan
中科院分区：
文献类型：
--
作者：
Xuesong Jonathan Tan;Jieran Wang;Yongjun Yuan
盲交会是认知用户在主用户动态干扰下进行控制信息交换的一种最稳健、最有效的方式。在此之前，没有一种方案能够保证cu在每个时隙内盲目会合，这使得它们经历了较长的交换延迟。基于松弛循环差分集（DS）的数学概念，提出了两种新颖的信道跳变（CH）方案，用于具有和不具有同步时钟的多无线电库在每个时隙盲目会合。这种最小交会延迟的实现对于实时语音和紧急通信等对延迟敏感的应用特别有用。此外，基于一种特殊的DS，两种方案都能接近于每个时隙盲交会无线收发机数量的理论下界，从而最大限度地降低了在最小交会延迟下交换控制信息所需的硬件复杂度。数值仿真结果表明，在动态PU干扰下，所提方案在cu的平均吞吐量和延迟方面优于现有方案。
Rendezvous in the blind fashion is known as one of the most robust and effective ways for cognitive users (CUs) to exchange control information under the dynamic interference of primary users (PUs). Earlier, no existing scheme could guarantee CUs to rendezvous blindly in each timeslot, which makes them experience relatively long exchange delay. Based on the mathematical concept of relaxed cyclic difference set (DS), this paper proposes two novel channel hopping (CH) schemes for multi-radio CUs with and without a synchronized time clock to rendezvous blindly in every timeslot. This achievement of minimum rendezvous delay is especially useful for such delay-sensitive applications as real-time voice and emergency communications. Moreover, based on a special class of DS, the proposed two schemes can closely approach the theoretical lower bound on the number of radio transceivers for CUs to rendezvous blindly in every timeslot and, hence, minimizes their required hardware complexity to exchange control information at the minimum rendezvous delay. Numerical simulation shows that, under dynamic PU interference, the proposed schemes outperform the existing ones in terms of the average throughput and delay of CUs.
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DOI：
10.1109/infocom.2016.7524556
发表时间：
2016-04
期刊：
IEEE INFOCOM 2016 - The 35th Annual IEEE International Conference on Computer Communications
影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
2013-08
期刊：
IEEE Communications Letters
影响因子：
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作者：
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DOI：
10.1109/glocom.2014.7417407
发表时间：
2014-12
期刊：
2015 IEEE Global Communications Conference (GLOBECOM)
影响因子：
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DOI：
10.1109/icc.2010.5502694
发表时间：
2010-05
期刊：
2010 IEEE International Conference on Communications
影响因子：
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