针对通信感知一体化的需求,提出了一种5G 基站通感一体化技术方案,在符合5G 通信协议的基础上实现了通信与感知功能的共存。5G 为了实现更加灵活的资源管理,定义了多种时隙格式,通过配置时隙格式可以实现灵活的上下行资源调度。文中提出的一体化方案通过为网络配置合适的时隙格式,实现时隙中部分灵活正交频分复用(OFDM)符号的预留,使得基站可以在这些OFDM 符号时间上进行感知信号的收发以进行目标感知,从而实现了5G 基站通信感知一体化。仿真实验表明该方案可以实现有效的目标感知。

Catering to the needs of integrated sensing and communication (ISAC), an ISAC scheme for 5G base stations is proposed, which enables the coexistence of communications and sensing on the basis of satisfying the 5G technical specifications. With the aim to manage radio resources more flexibly, multiple slot formats are defined in 5G. By configuring different slot formats, flexible uplink and downlink resource scheduling can be realized. The proposed ISAC scheme reserves some flexible orthogonal frequency division multiplexing (OFDM) symbols in a slot by configuring proper slot format for the cellular network. Thus, the base station can transmit and receive sensing signals during the time of reserved flexible OFDM symbols so as to detect targets. Based on this, the ISAC for 5G base stations is realized. As illustrated by simulations, the proposed ISAC scheme can realize effective target perception.

TN957.52;TN914.3

国家自然科学基金资助项目(U22B2007)