This paper presents a dynamic buffer aided medium access control protocol for asymmetric traffic conditions in an IoT network, where the IoT devices send data to a wireless access point (WAP) which then forwards the data to the network fusion center. Specifically, the control frame structures of conventional carrier sense multiple access with collision detection (CSMA/CD) protocol are modified for incorporating the traffic asymmetry of the network. The devices and WAP are assumed to have full duplex abilities to support continuous sensing of the channel. The sensing performance of the considered system is derived for arbitrary number of devices in terms of probabilities of false alarm and miss detection. Moreover, the throughput of the network is also obtained. Simulation results show that the proposed cross-layer design achieves significant throughput improvement while incorporating traffic asymmetry of the network.

本文提出了一种用于IoT网络中非对称流量条件的动态缓冲辅助媒体访问控制协议，其中IoT设备将数据发送到无线访问点（WAP），然后将其转发到网络融合中心。具体而言，对传统的带有冲突检测的载波侦听多路访问（CSMA / CD）协议的控制帧结构进行了修改，以合并网络的流量不对称性。假定设备和WAP具有全双工功能以支持对信道的连续感测。根据虚警和漏检的可能性，针对任意数量的设备得出了所考虑系统的感测性能。此外，还可以获得网络的吞吐量。