Invention Application
- Patent Title: CELL-FREE MASSIVE MIMO TRANSMISSION METHOD, AND APPARATUS FOR THE SAME
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Application No.: US17461633Application Date: 2021-08-30
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Publication No.: US20220123795A1Publication Date: 2022-04-21
- Inventor: Min Hyun KIM , Seung Eun HONG
- Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Applicant Address: KR Daejeon
- Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Current Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Current Assignee Address: KR Daejeon
- Priority: KR10-2020-0133959 20201016
- Main IPC: H04B7/0452
- IPC: H04B7/0452 ; H04B17/318 ; H04L5/00 ; H04W72/12

Abstract:
An operation method of a CP may comprise: requesting a status report from each of terminals and receiving the status report; determining switching from basic transmission mode to cell-free massive MIMO transmission mode for at least part of the terminals based on the status reports; instructing the at least part of the terminals and at least one AN to perform cell-free massive MIMO transmission for the at least part of the terminals to configure cell-free massive MIMO transmission mode; determining analog beam(s) and/or digital precoder(s) to be applied by the at least one AN to the at least part of the terminals based on channel qualities between the at least part of the terminals and the at least one AN; and allowing the at least one AN to perform cell-free massive MIMO transmission to the at least part of the terminals using the analog beam(s) and/or digital precoder(s).
Public/Granted literature
- US11764839B2 Cell-free massive MIMO transmission method, and apparatus for the same Public/Granted day:2023-09-19
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