US 10,567,064 B2Granted

Beam recovery for partial control channel failure

AssigneeAT&T Intellectual Property I, L.P.

InventorsXiaoyi Wang, Arunabha Ghosh, Salam Akoum

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Abstract

Various embodiments disclosed herein provide for a beam recovery when there has been a partial control channel failure. Transient obstructions, and other interference effects can cause the failure of a beam pair link which can comprise a transmit beam and a receive beam associated with respective antennas on a transmitter and receiver. A group of control channels (downlink control channels) (configured as a control resource set “CORESET”) on a group of beam pair links can be associated with a group of uplink control resources (Physical Uplink Control Channel resources). When a subset of the CORESET group fails, the user equipment (UE) device can find another PUCCH that is associated with a working CORESET to send an indication to the network about the failure. When the network receives the indication, the network can switch the failed CORESET to a new beam pair link.

Claims20

Dependent claims

A user equipment device, comprising:

a processor;
and
a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
receiving a configuration where an uplink resource slot of a first beam pair link is associated with a group of downlink resource slots;
determining that the uplink resource slot is likely to fail based on a determination that downlink control information for a downlink resource slot of the first beam pair link satisfies a defined criterion associated with error correction, wherein the uplink resource slot facilitates transmitting uplink control information to a base station device, and wherein the downlink resource slot is one of the group of downlink resource slots;
in response to determining, based on the defined criterion associated with the error correction, that the uplink resource slot is likely to fail, switching the uplink resource slot to a second beam pair link and rescheduling the downlink resource slot for transmission via the second beam pair link;
and
transmitting a notification to the base station device that the uplink resource slot has been transferred to the second beam pair link.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/699,662Filed 8 Sep 2017
Published: US 2019/0081686 A114 Mar 2019
Granted: 18 Feb 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

H04B 7/0696
Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping: determining beam pairs
H04B 7/0408
Using two or more spaced independent antennas: using two or more beams, i.e. beam diversity
H04B 7/088
Hybrid systems, i.e. switching and combining: using beam selection
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals