移动自组网中支持混合动态优先级的增强型MAC参数
Enhanced MAC Parameters to Support Hybrid Dynamic Prioritization in MANETs
摘要：
由于移动自组网在战场、洪水、地震等决定性环境中的应用，服务质量（QoS）成为移动自组网的必然要求。属于不同层次类别的用户要求不同级别的QoS使用移动自组网。有时，即使是低类别用户也可能需要在时间关键的应用程序中发送紧急消息。因此，基于用户类别和用户发送的消息的紧急性来提供优先级变得必要。在本文中，我们提出了增强的MAC参数，以支持混合动态优先级在移动自组网（H-MAC）。它结合了基于用户分类的优先级和动态紧急情况。顺序统计用于实现动态优先级。我们提出了动态TXOP，比例AIFS和比例动态退避定时器的基础上的权重和冲突，以避免数据包丢失和饥饿的低优先级。该模型在ns 2中进行了仿真。我们比较我们的结果与IEEE 802.11e，并表明，16%以上的吞吐量是通过H-MAC在广泛的冲突。我们还观察到，饥饿和数据包丢弃减少与现有模型相比，成比例的带宽共享。
英文摘要：
Quality of Service (QoS) for MANETs becomes a necessity because of its applications in decisive situations such as battle fields, flood and earth quake. Users belonging to diverse hierarchical category demanding various levels of QoS use MANETs. Sometimes, even a low category user may need to send an urgent message in time critical applications. Hence providing prioritization based on user category and urgency of the message the user is sending becomes necessary. In this paper we propose Enhanced MAC parameters to support Hybrid Dynamic priority in MANETs(H-MAC). It combines both prioritization based on user categorization and dynamic exigency. Order Statistics is used to implement dynamic priority. We propose dynamic TXOP, Proportional AIFS and Proportional dynamic Backoff timers based on weights and collision, to avoid packet dropping and starvation of lower priorities. The model is simulated in ns2. We compare our results with IEEE 802.11e and show that, 16% more throughput is achieved by H-MAC during extensive collision. We also observe that starvation and packet drops are reduced with proportionate bandwidth sharing compared to the existing model.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
