论文标题
IEEE 802.11AD/AY中的调度和资源分配的挑战
The challenges of Scheduling and Resource Allocation in IEEE 802.11ad/ay
论文作者
论文摘要
IEEE 802.11AD WIFI修正案可以在未经许可的60 〜GHz频谱中进行短程多gibibit通信，从而解锁了新的有趣应用程序，例如无线增强和虚拟现实。 MMWave频段和方向通信的特性允许通过在同一时间频率插槽中安排低跨裂缝通道的节点对来增加系统吞吐量。另一方面，这需要更大的信号开销。此外，IEEE 802.11AD引入了一种混合MAC，其特征是两种不同的通道访问机制：基于争论和无争议的访问期。与以前的WiFi版本相比，这两种访问期类型的共存和MMWave的典型方向性增加了IEEE 802.11AD中的通道访问和调度复杂性。因此，为了提供要求应用程序所需的服务质量（QoS）性能，需要考虑方向通信和本WiFi修订的新添加功能的适当资源调度机制。在本文中，我们对IEEE 802.11AD中与渠道访问相关的开放问题和挑战进行了简要介绍，并提出了通过启发式和基于学习的方法来解决这些问题的工作流程。
The IEEE 802.11ad WiFi amendment enables short-range multi-gigabit communications in the unlicensed 60~GHz spectrum, unlocking new interesting applications such as wireless Augmented and Virtual Reality. The characteristics of the mmWave band and directional communications allow increasing the system throughput by scheduling pairs of nodes with low cross-interfering channels in the same time-frequency slot. On the other hand, this requires significantly more signaling overhead. Furthermore, IEEE 802.11ad introduces a hybrid MAC characterized by two different channel access mechanisms: contention-based and contention-free access periods. The coexistence of both access period types and the directionality typical of mmWave increase the channel access and scheduling complexity in IEEE 802.11ad compared to previous WiFi versions. Hence, to provide the Quality of Service (QoS) performance required by demanding applications, a proper resource scheduling mechanism that takes into account both directional communications and the newly added features of this WiFi amendment is needed. In this paper, we present a brief but comprehensive review of the open problems and challenges associated with channel access in IEEE 802.11ad and propose a workflow to tackle them via both heuristic and learning-based methods.
