Integrated access and backhaul (IAB) facilitates cost-effective deployment of millimeter wave(mmWave) cellular networks through multihop self-backhauling. Full-duplex (FD) technology, particularly for mmWave systems, is a potential means to overcome latency and throughput challenges faced by IAB networks. We derive practical and tractable throughput and latency constraints using queueing theory and formulate a network utility maximization problem to evaluate both FD-IAB and half-duplex(HD)-IAB networks. We use this to characterize the network-level improvements seen when upgrading from conventional HD IAB nodes to FD ones by deriving closed-form expressions for (i) latency gain of FD-IAB over HD-IAB and (ii) the maximum number of hops that a HD- and FD-IAB network can support while satisfying latency and throughput targets. Extensive simulations illustrate that FD-IAB can facilitate reduced latency, higher throughput, deeper networks, and fairer service. Compared to HD-IAB,FD-IAB can improve throughput by 8x and reduce latency by 4x for a fourth-hop user. In fact, upgrading IAB nodes with FD capability can allow the network to support latency and throughput targets that its HD counterpart fundamentally cannot meet. The gains are more profound for users further from the donor and can be achieved even when residual self-interference is significantly above the noise floor.

翻译：综合存取和回航(IAB)有助于通过多速自我回航,以成本效益高的方式部署毫米波(毫米瓦夫)蜂窝网络,通过多速自我回航,我们利用这一方法来说明从传统的HD IAB节向FD节升级到FD的网络层面的改善情况,为此,我们特别为毫米Wave系统提供了全解(FD)技术,这是克服AB网络面临的潜伏和吞吐挑战的一个潜在手段。我们利用排队理论获得实际和可移植的吞吐和延流限制,并形成一个网络使用最大化的网络问题,以评价FD-IAB和半双流(HD)-内流(HD)-AB网络。我们利用这一技术来说明从传统的HD-IAB节向FD节流升级到FD节节节向FD节流的网络层面的改善情况。 相对于HD-IB节的封闭式表达方式,通过IDFD-IC的升级能力,不能通过ID节流向第4级用户的升级而大大改进。