公开(公告)号：US20240356701A1

公开(公告)日：2024-10-24

申请号：US18637822

申请日：2024-04-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Se Young CHO ,  Seung Eun Hong ,  Jee Hyeon Na

IPC: H04L5/00 ,  H04B7/0452 ,  H04W48/20

CPC classification number: H04L5/005 ,  H04B7/0452 ,  H04W48/20

Abstract: The present disclosure provides a method for pilot allocation using the Hungarian algorithm in a cell-free massive MIMO system. The method includes obtaining a first matrix by computing a large-scale channel gain between each of a plurality of UEs and each of a plurality of APs included in the cell-free massive MIMO system; assigning each of the plurality of UEs to a first group or a second group by using the first matrix; allocating a pilot to each UE in the second group; obtaining a second matrix by computing the reusability of pilots between each UE in the first group and each UE in the second group; and allocating a pilot to each UE in the first group by applying the Hungarian algorithm to the second matrix.