A new multi-channel MAC protocol with on-demand channel assignment for multi-hop mobile ad hoc networks
A new multi-channel MAC protocol with on-demand channel assignment for multi-hop mobile ad hoc networks
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DOI：
10.1109/ispan.2000.900290
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发表时间：
2000-12
期刊：
影响因子：
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通讯作者：
Shih-Lin Wu;Chih-Yu Lin;Y. Tseng;J. Sheu
中科院分区：
文献类型：
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作者：
Shih-Lin Wu;Chih-Yu Lin;Y. Tseng;J. Sheu
无线移动自组网（MANET）体系结构近年来受到了广泛的关注。研究了具有多跳通信行为的MANET中多信道的接入问题。我们指出了使用多个通道时的几个有趣问题。然后，我们提出了一种新的多通道MAC协议，其特点如下：(i)它遵循“按需”风格为移动主机分配通道；（ii）所需通道的数量与网络拓扑和程度无关；（iii）它灵活地适应主机的移动性，只交换少量控制消息来实现通道分配和介质访问；（iv）不需要时钟同步。与现有的协议相比，有些协议静态地为主机分配信道（因此主机即使无意传输也会占用一个信道），有些协议需要信道数量，这是最大连接的函数，有些协议需要在MANET中所有主机之间进行时钟同步。进行了大量的仿真来评估所提出的协议。
The wireless mobile ad hoc network (MANET) architecture has received a lot of attention recently. This paper considers the access of multiple channels in a MANET with multi-hop communication behavior. We point out several interesting issues when using multiple channels. We then propose a new multi-channel MAC protocol, which is characterized by the following features: (i) it follows an "on-demand" style to assign channels to mobile hosts, (ii) the number of channels required is independent of the network topology and degree, (iii) it flexibly adapts to host mobility and only exchanges few control messages to achieve channel assignment and medium access, and (iv) no clock synchronization is required. Compared to existing protocols, some assign channels to hosts statically (thus a host will occupy a channel even when it has no intention to transmit) some require a number of channels which is a function of the maximum connectivity, and some necessitate a clock synchronization among all hosts in the MANET. Extensive simulations are conducted to evaluate the proposed protocol.