AI 中文总结
针对IEEE 802.11bn的协调空间复用，提出基于比例公平的发射功率分配框架，简化了功率搜索过程，通过仿真验证其性能，指出当前信令需额外反馈以支持该公平最优策略。
AI 中文摘要
IEEE 802.11bn（简称11bn）引入了协调空间复用（Co-SR），这是一种多接入点协调（MAPC）方案，其中两个接入点（AP）进行协调以控制同时传输的发射功率。本文提出了一种基于比例公平（PF）的框架，用于在每次传输机会（TXOP）基础上分配Co-SR的发射功率。我们证明，任何帕累托最优功率对都会使至少一个AP处于最大功率状态，从而将联合二维搜索简化为两次简单的一维线搜索，完全适配TXOP的时间要求，并且在实际离散速率系统中可简化为精确的闭式表达式。我们将所得策略与一种低复杂度的自私基线策略，在11bn网络模拟器Kom8ndor中通过数据包级仿真，并与暴力最优基准进行对比验证。结果表明，联合评估两个AP的链路是释放Co-SR空间复用增益的关键；协调AP的公平最优功率极大地取决于速率是连续建模还是通过实际离散调制与编码方案（MCS）步骤建模；当前11bn信令支持自私策略，但不支持公平最优策略，后者需要额外的每TXOP信道反馈。
英文摘要
IEEE 802.11bn (11bn) introduces Coordinated Spatial Reuse (Co-SR), a Multi-AP Coordination (MAPC) scheme in which two Access Points (APs) coordinate to control the transmit power for a simultaneous transmission. This letter introduces a Proportional Fairness (PF)-driven framework for allocating Co-SR transmit power on a per-Transmission Opportunity (TXOP) basis. We prove that any Pareto-optimal power pair keeps at least one AP at its maximum power, reducing the joint two-dimensional search to two cheap one-dimensional line searches that fit comfortably within TXOP timing, and show that this collapses to an exact closed-form expression in a real, discrete-rate system. We validate the resulting policies, together with a low-complexity selfish baseline, against a brute-force oracle and through packet-level simulations in Kom8ndor, an 11bn network simulator. Results show that jointly evaluating both APs' links is key to unlocking Co-SR's spatial reuse gains, that the coordinated AP's fairness-optimal power depends critically on whether the rate is modeled continuously or through real, discrete Modulation and Coding Scheme (MCS) steps, and that current 11bn signaling supports the selfish policy but not the fairness-optimal ones, which would need additional per-TXOP channel reporting.
