Static and dynamic retransmission control for slotted aloha in transmission channels with erasure and capture
Static and dynamic retransmission control for slotted aloha in transmission channels with erasure and capture
复制标题
具有擦除和捕获功能的传输通道中时隙阿罗哈的静态和动态重传控制
DOI：
10.1002/sat.4600110505
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Christoph Meier‐Hedde
中科院分区：
文献类型：
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作者：
A. Böttcher;Christoph Meier‐Hedde
对于移动无线电应用（主要是移动卫星服务）来说，开槽Aloha是一种有吸引力的多址方案。当捕获效应发生时尤其如此，即当几个碰撞数据包中的一个可以捕获公共接收器时。这主要是由于发射机的信号电平不同。众所周知，开槽的阿罗哈通道会变得不稳定。只有在应用了良好的重传控制策略时，它才能执行可接受的性能。本文比较了有捕获和擦除的传输信道中开槽Aloha的静态和动态稳定方法。用解析法和仿真法对它们进行了分析。结果表明，在移动无线信道中，动态控制过程更加灵活，并且优于静态重传策略。
Slotted Aloha can be an attractive multiple access scheme for mobile radio applications, mainly for mobile satellite services. This is especially so when capture-effects occur, i.e. when one out of several colliding data packets can capture the common receiver. Mostly this is due to varying signal levels of the transmitters. It is well-known that a slotted Aloha channel can become unstable. It performs acceptably only if a good retransmission control policy is applied. In this paper, static and dynamic stabilization methods for slotted Aloha in transmission channels with capture and erasure are compared. They are analyzed by analytical methods as well as by simulation. It turns out that a dynamic control procedure is more flexible and outperforms a static retransmission policy also in mobile radio channels.