Invention Publication
- Patent Title: Lower Bound on Users' Speed for Efficient SRS Resource Handling for MU-MIMO Transmission
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Application No.: US18346780Application Date: 2023-07-03
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Publication No.: US20240007153A1Publication Date: 2024-01-04
- Inventor: Nimrod Gradus , Ido Shaked , Ori Shmuel
- Applicant: Parallel Wireless, Inc.
- Applicant Address: US NH Nashua
- Assignee: Parallel Wireless, Inc.
- Current Assignee: Parallel Wireless, Inc.
- Current Assignee Address: US NH Nashua
- Main IPC: H04B7/0452
- IPC: H04B7/0452 ; H04W72/0446 ; H04W72/23

Abstract:
A method of determining a lower bound on users' speed for efficient SRS resource handling for MU-MIMO transmission includes determining an eNodeB (eNB) or gNodeB (gNB) timing of a subframe; determining a User Equipment (UE) timing of the subframe; calculating a timing advance type corresponding to a Round Trip Time (RTT); calculating a distance to a base station corresponding to the Round Trip Time (RTT); calculating a distance traveled by a UE between two points based on the distance to the base station; calculating a user speed based on the distance traveled by the UE; deriving a lower bound based on the user speed; and filtering users that exceed the lower bound on user speed. The filtered users may be not assigned SRS. The non-filtered users may be assigned SRS and may subsequently be sent MU-MIMO transmissions.
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