The IEEE 802.22 is a standard for wireless regional area networks to opportunistically operate in TV bands; however, sharing TV White Space (TVWS) spectrum creates a problem of coexistence because no mechanism is defined for coordinating channel usage among secondary networks. We propose a White Space Resource Sharing mechanism (WSRS) for fixed secondary and mobile IEEE 802.22 networks to improve network coexistence and spectrum efficiency. Based on power control and channel allocation, our mechanism allows the TVWS system to serve vehicular networks in scenarios where there are active secondary fixed networks and no more TVWS channels available for opportunistic usage. Unlike state-of-the-art mechanisms for coexistence in TVWS spectrum, our mechanism allocates resources to vehicles even when the density of fixed nodes and the transmission power of the fixed network cause high interference to the vehicular network. Our results show the offered channel capacity increases up to 50% using the proposed WSRS mechanism compared to the recent IEEE 802.22 standard that does not have a defined TVWS channel sharing mechanism. Furthermore, our WSRS mechanism implements a strategy to protect the fixed secondary network from interference caused by vehicular transmissions while promoting fair usage for both secondary networks.

中文翻译：

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面向 IEEE Std 的 TVWS 上用于车辆通信的认知网络的共存。802.22

IEEE 802.22 是无线区域网络在电视频段中随机操作的标准；然而，共享电视空白空间 (TVWS) 频谱会产生共存问题，因为没有定义用于协调辅助网络之间的信道使用的机制。我们提出了一种用于固定辅助和移动 IEEE 802.22 网络的空白空间资源共享机制 (WSRS)，以提高网络共存和频谱效率。基于功率控制和信道分配，我们的机制允许 TVWS 系统在有活动的辅助固定网络且没有更多 TVWS 信道可供机会使用的场景下为车载网络提供服务。与 TVWS 频谱共存的最先进机制不同，即使固定节点的密度和固定网络的传输功率对车载网络造成高干扰，我们的机制也会为车辆分配资源。我们的结果表明，与最近没有定义 TVWS 信道共享机制的 IEEE 802.22 标准相比，使用提议的 WSRS 机制提供的信道容量增加了高达 50%。此外，我们的 WSRS 机制实施了一种策略，以保护固定辅助网络免受车辆传输造成的干扰，同时促进两个辅助网络的公平使用。