期刊
IEEE WIRELESS COMMUNICATIONS
卷 29, 期 4, 页码 40-46出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/MWC.003.2100099
关键词
Radio frequency; Relays; 5G mobile communication; Prototypes; Downlink; Wireless communication; Time-frequency analysis; 3GPP
类别
资金
- Networks Business, Samsung Electronics and Institute of Information & Communications Technology Promotion (IITP) - Korea government (MSIT) [2018-0-00923]
Researchers are exploring integrated access and backhaul (IAB) frameworks for 5G new radio (NR) as a cost-effective alternative to wired backhaul. The integration of full duplex (FD) technologies in this framework is promising, but it faces challenges such as self-interference (SI) which may impact its performance and feasibility.
Researchers for the third-generation partnership project (3GPP) have been exploring - as a cost-effective alternative to wired backhaul - integrated access and backhaul (IAB) frameworks for 5G new radio (NR). A promising solution for this framework is the integration of full duplex (FD) technologies to enhance the spectral efficiency and efficiently utilize network resources. This approach, which we refer to as FD IAB, involves a significant technical challenge - self-interference (SI) in the IAB framework. In fact, this challenge casts doubt over the performance and feasibility of FD IAB. In this article, we introduce the FD IAB framework and its enabling technologies and also evaluate the framework's link-level SI reduction and system-level downlink throughput performance. Thereafter, we validate the attenuation level in the SI channel with antenna separation and high directional gain through 28 GHz hardware prototype measurements. Our numerical evaluations and hardware prototype measurements confirm that FD IAB represents a promising framework for 5G NR.
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