KALOHA: ike i ke ALOHA
KALOHA: ike i ke ALOHA
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KALOHA：就像阿罗哈
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
J. Garcia
中科院分区：
文献类型：
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作者：
J. Garcia
介绍了一种新的信道接入方案，称为KALOHA（“ALOHA知识”）。KALOHA包括修改纯ALOHA协议赋予节点的知识，当数据包和数据包被接收到的本地时间，并在媒体访问控制（MAC）层共享信道利用率的估计。KALOHA中唯一需要的物理层反馈是接收正确的数据包及其ACK。一个简单的马尔可夫链模型被用来比较的吞吐量KALOHA与ALOHA和时隙ALOHA。该分析考虑了节点所具有的知识量以及延迟和周转延迟的影响。结果表明，在MAC层的信道利用率的使用和共享知识所带来的好处。KALOHA比ALOHA更稳定，吞吐量是ALOHA的两倍多，不需要载波侦听，不需要物理层的时隙，也不需要使用其他物理层机制。
A new family of channel-access schemes called KALOHA (for "Knowledge in ALOHA") is introduced. KALOHA consists of modifying the pure ALOHA protocol by endowing nodes with knowledge regarding the local times when packets and acknowledgments are received, and sharing estimates of channel utilization at the medium access control (MAC) layer. The only physical-layer feedback needed in KALOHA is the reception of correct data packets and their ACKs. A simple Markov-chain model is used to compare the throughput of KALOHA with ALOHA and slotted ALOHA. The analysis takes into account the amount of knowledge that nodes have and the effect of acknowledgments and turnaround latencies. The results demonstrate the benefits derived from using and sharing knowledge of channel utilization at the MAC layer. KALOHA is more stable than ALOHA and attains more than double the throughput of ALOHA, without the need for carrier sensing, requiring time slotting at the physical layer, or using other physical-layer mechanisms.