Invention Grant
- Patent Title: Beam failure recovery procedure
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Application No.: US16240030Application Date: 2019-01-04
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Publication No.: US10587363B2Publication Date: 2020-03-10
- Inventor: Hua Zhou , Esmael Dinan , Alireza Babaei , Hyoungsuk Jeon , Ali Cagatay Cirik
- Applicant: Hua Zhou , Esmael Dinan , Alireza Babaei , Hyoungsuk Jeon , Ali Cagatay Cirik
- Applicant Address: US VA Reston
- Assignee: Ofinno, LLC
- Current Assignee: Ofinno, LLC
- Current Assignee Address: US VA Reston
- Agent David Grossman; Kavon Nasazadeh; Philip Smith
- Main IPC: H04L1/00
- IPC: H04L1/00 ; H04B7/06 ; H04B17/327 ; H04L27/26 ; H04L1/18 ; H04B17/309 ; H04W76/11 ; H04W24/10 ; H04W52/14 ; H04W52/22 ; H04W72/04 ; H04L29/06 ; H04B1/3827 ; H04W80/02

Abstract:
A wireless device initiates a beam failure recovery procedure in response to detecting a first number of beam failure instances. A beam failure recovery timer is started with a first timer value. A first reference signal is selected in response to an expiry of the beam failure recovery timer. A first preamble associated with the first reference signal is transmitted. A downlink control channel for a downlink control information is monitored during a response window and in response to transmitting the first preamble. A preamble transmission counter is incremented, from a value of the preamble transmission counter before the expiry of the beam failure recovery timer, in response to not receiving the downlink control information during the response window. A second preamble for the beam failure recovery procedure is transmitted in response to the preamble transmission counter indicating a second number equal to or less than a third number for preamble transmissions.
Public/Granted literature
- US20190207667A1 Beam Failure Recovery Procedure Public/Granted day:2019-07-04
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