The global wireless industry works like clockwork. Every decade, the global community ratifies a new generation of cellular standards relying on advances from the past decades; a similar rhythm drives Wi-Fi standardization. In all standards, cellular and Wi-Fi, a core design principle is that wireless nodescan either transmit or receive in a given frequency band. However, a node cannot simultaneously transmit and receive in the same frequency band due to high self-interference from its own transmitted signal that can drown out the receive signal. As a result, to enable bidirectional communications between nodes, network designs have relied on partitioning time and frequency using a mix of time-division duplex and frequency-division duplex. In short, wireless designs have not considered in-band full duplex (IBFD) as a building block.

中文翻译：

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 带内全双工


全球无线行业的运转就像发条一样。每十年，国际社会就会根据过去几十年的进步批准新一代蜂窝标准；类似的节奏推动了 Wi-Fi 标准化。在所有标准（蜂窝和 Wi-Fi）中，核心设计原则是无线节点可以在给定频段内发送或接收。然而，由于节点自身发送信号的高自干扰可能会淹没接收信号，因此节点无法在同一频段同时发送和接收。因此，为了实现节点之间的双向通信，网络设计依赖于使用时分双工和频分双工的混合来划分时间和频率。简而言之，无线设计并未将带内全双工 (IBFD) 视为构建块。