Initial Access Optimization for Millimeter Wave Wireless Networks - CentraleSupélec Access content directly
Conference Papers Year :

Initial Access Optimization for Millimeter Wave Wireless Networks


The initial access in 5G New Radio (NR) standalone millimeter wave (mmWave) uses the techniques of beam sweeping to Figure out appropriate directions of transmission and reception. Beam sweeping refers to the transmission of cell specific signals by the base station (BS) while switching beam direction in a sequential manner in order to cover the whole cell. The conventional beam sweeping consists of transmitting sequentially and periodically the beams, according to a fixed pattern, which results in an initial access latency. The aim of this paper is to minimize the overall number of timeslots needed to connect all users to the BS by allowing using multiple beams in some slots and then activating the beams in a prioritized and controlled manner rather than sequentially and periodically as in the conventional scheme. The problem is formulated as a combinatorial optimization problem, for which a Semidefinite Relaxation-based (SDR-based) solving approach is proposed. Numerical results demonstrate that our scheme outperforms significantly the conventional beam sweeping.
No file

Dates and versions

hal-03260006 , version 1 (14-06-2021)



Minh Hoang Ly, Youssef Hussein, Elissa Mhanna, Mohamad Assaad. Initial Access Optimization for Millimeter Wave Wireless Networks. 2021 IEEE Wireless Communications and Networking Conference (WCNC), Mar 2021, Nanjing, China. pp.1-6, ⟨10.1109/WCNC49053.2021.9417467⟩. ⟨hal-03260006⟩
84 View
0 Download



Gmail Facebook Twitter LinkedIn More