Invention Grant
- Patent Title: System and method for beam-based physical random-access
-
Application No.: US17009912Application Date: 2020-09-02
-
Publication No.: US11751238B2Publication Date: 2023-09-05
- Inventor: Mattias Frenne , Håkan Andersson , Johan Furuskog , Stefan Parkvall , Henrik Sahlin , Qiang Zhang
- Applicant: Telefonaktiebolaget LM Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
- Current Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
- Current Assignee Address: SE Stockholm
- Agency: BAKER BOTTS L.L.P.
- Main IPC: H04W72/04
- IPC: H04W72/04 ; H04W74/00 ; H04B7/08 ; H04W72/044 ; H04B7/0408 ; H04B7/06 ; H04W16/28 ; H04L5/00

Abstract:
A method in a wireless device for performing random access to a network node. The method comprises receiving a set of downlink beam-specific reference signals, BRS, from the network node, and determining a preferred BRS based on the received signal power for each BRS. The method also comprises selecting, based on the preferred BRS, a random-access resource to be used for transmitting a random-access attempt to the network node, as well as using the selected random-access resource when transmitting a random-access attempt to the network node, whereby the selection of random-access resource indicates to the network node which downlink beam is preferred by the wireless device to be used for downlink transmissions.
Information query