Abstract
In the fifth-generation (5G) wireless communication system, the Discontinuous Reception (DRX) is indispensable to user equipment (UE) to support evolved technologies. However, the directionality of wireless links, especially in millimeter wave bands, leads the existing DRX mechanism to unnecessary power consumption. In this paper, we first identify the problems of beam pattern mismatching. Then, we proposed a dynamic beam-aware DRX mechanism, which could be applied along with dynamic mmWave beam configuration. The proposed framework jointly optimizes beam-aware DRX operation and dynamic mmWave beam configuration for better energy efficiency. A semi-Markov model is proposed to evaluate a UE sleeping ratio and packet delay. The simulation validates the proposed model. Compared to the baseline 5G NR DRX operation, the proposed scheme achieves 41.6% improvement in the sleep ratio without sacrificing the packet delivery latency performance.
Highlights
INTRODUCTIONThe number of connected user equipment (UE) will increase massively
In the near future, the number of connected user equipment (UE) will increase massively
Compared to the previous research, we focus on crosslayer design and optimization between Media Access Control (MAC) layer DRX and Physical layer millimeter wave (mmWave) beam pattern configuration
Summary
The number of connected user equipment (UE) will increase massively. Does the beamforming technology enhance the received power of the covered UEs, but it reduces the impact of interference between the different gNBs [8]. The beam-aware Media Access Control (MAC) Layer protocol design is essential to reduce the energy consumption of UEs in the mmWave 5G wireless networks [11]–[13]. If the UEs could operate their RF modules with the consideration of serving beam patterns, the amount of additional reduced power consumption is considerable, especially in the 5G NR networks with a massive number of mobile devices. We propose a cross-layer design that enables the DRX mechanism adaptive to the beam patterns in mmWave communications. With the awareness of beam patterns, we design a DRX mechanism that is adaptive to the mmWave beamforming technology. The flexible scheduling period can enhance both the sleep ratio and the packet delay of the proposed DRX mechanism. (§VIII)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
