With the rapid development of smart terminals and infrastructure, 6G is expected to evolve to a mobile network with integrated radio-sensing capability - namely, perceptive mobile networks - and to support diverse heterogeneous services with rich needs. The existing radio access architecture cannot take into account the various requirements of heterogeneous services. Therefore, it is critical to develop radio access schemes for perceptive mobile networks in 6G. Open radio access networks (O-RAN), which support open interfaces and common development standards, enables deployment of diversified access schemes. Additionally, the combination of integration of sensing and communication (ISAC) and O-RAN is expected to provide new possibilities for next-generation mobile network schemes. This article proposes a new radio access networks (RAN) architecture: ISAC assisted O-RAN, which not only supports open interfaces, but also endows base stations (BSs) and terminals with the ability to perceive the surrounding environment. The current information obtained by sensing - and the future information obtained by prediction - are used to assist access decision-making, realizing the self-optimization function of 6G access networks. As the types of services and devices supported by 6G access networks become more and more diverse, an on-demand dynamic allocation mechanism for multi-dimensional resources is proposed to achieve a good match between multi-dimensional resources and heterogeneous services. Meanwhile, aiming at the problem of frequent handover (HO) in high mobility scenarios, a scheme is proposed in which ISAC technology is used to flexibly adjust HO control parameters (HCP) and achieve more accurate beam tracking. As a result, the wireless link failures and communication interruptions in the HO process are minimized.

中文翻译：

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6G 感知移动网络的资源分配和移动性管理


随着智能终端和基础设施的快速发展，6G有望演进为具有集成无线电感知能力的移动网络，即感知移动网络，并支持丰富需求的多样化异构业务。现有的无线接入架构无法兼顾异构业务的多样化需求。因此，开发6G感知移动网络的无线接入方案至关重要。开放无线接入网络（O-RAN）支持开放接口和通用开发标准，可以部署多样化的接入方案。此外，传感与通信集成（ISAC）与O-RAN的结合有望为下一代移动网络方案提供新的可能性。本文提出了一种新的无线接入网络（RAN）架构：ISAC辅助的O-RAN，它不仅支持开放接口，而且赋予基站（BS）和终端感知周围环境的能力。利用感知获得的当前信息和预测获得的未来信息来辅助接入决策，实现6G接入网络的自优化功能。随着6G接入网支持的业务和设备类型越来越多样化，提出了一种多维资源按需动态分配机制，以实现多维资源与异构业务的良好匹配。同时，针对高移动场景下频繁切换（HO）的问题，提出了一种利用ISAC技术灵活调整HO控制参数（HCP），实现更准确的波束跟踪的方案。 结果，HO过程中的无线链路故障和通信中断被最小化。