为特定的网络的宽大的中等存取控制(MAC ) 协议被建议了。然而,他们中的大多数不考虑在之间的相互作用物理(PHY ) 层和 MAC 层。因此,他们的效率和可行性极大地被限制。在这篇文章,我们在场为特定的网络的一个新奇 MAC 协议根据 cross-layerdesign 的想法。建议协议联合一个 MAC 协议称为的双忙音调有直角的频率部门 multiplexing (OFDM ) 的多重存取(DBTMA ) 在 IEEE 802.11a 的系统标准。Theanalysis 证明建议协议提供更高的产量并且比以前的 MAC 协议更灵活。另外,它能面对隐藏的终端向服务(QoS ) 保证的质量提供到包不同延期要求。
Ample medium access control (MAC) protocols for Ad hoc networks have been proposed. However, most oal (PHY) layer and the MAC layers. Therefore, their efficiencf them do not take into account the interactions between the physicy and feasibility are greatly limited. In this article, we present a novel MAC protocol for Ad hoc networks according to the idea of cross-layer design. The proposed protocol combines an MAC protocol termed dual busy tone multiple access (DBTMA) with Orthogonal frequency division multiplexing (OFDM) system in IEEE 802.1 la standard. The analysis showed that the proposed protocol provides higher throughput and is more flexible than previous MAC protocols. In addition, it can provide Quality of Service(QoS) guarantee to the packets with different delay requirements in the presence of hidden terminals.