US 11,153,862 B2Granted

Physical downlink control channel (PDCCH) blind decoding in fifth generation (5G) new radio (NR) systems

AssigneeApple Inc.

InventorsHong He, Debdeep Chatterjee, Gang Xiong

Life of this patent

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Abstract

A network device (e.g., a user equipment (UE), or a new radio NB (gNB)) can process or generate a configuration of physical downlink control channel (PDCCH) monitoring in different search spaces sets independently from one another in order to manage different services optimally. A processor of the network device can be configured to receive physical downlink control channel (PDCCH) candidates of a PDCCH in a slot for channel estimation across search spaces of the slot. Different priorities can be determined among the PDCCH candidates in the slot based on a priority rule. Then a number of PDCCH candidates can be skipped/dropped from monitoring based on the different priorities of the PDCCH candidates to ensure that a threshold level of blind decoding operations across a plurality of slots of the PDCCH is being satisfied. The UE can monitor a portion of the PDCCH candidates while concurrently skipping another.

Claims23

Dependent claims

An apparatus configured to be employed in a User Equipment (UE) for new radio (NR) communications comprising:

one or more processors configured to:
receive physical downlink control channel (PDCCH) candidates of a PDCCH in a slot to perform channel estimation across search spaces of the slot;
determine different priorities among the PDCCH candidates in the slot based on a priority rule;
selectively determine a number of PDCCH candidates to be skipped from monitoring based on the different priorities of the PDCCH candidates to ensure that a threshold level of blind decoding operations across a plurality of slots of the PDCCH is being satisfied, wherein a choice between either dropping the PDCCH candidates by starting from a highest aggregation level (AL) or a lowest AL is based on whether a control channel element (CCE) budget is exceeded, a blind decoding budget is exceeded, and both a CCE budget and a blind decoding budget is exceeded;
and
monitor a portion of the PDCCH candidates while concurrently skipping another portion of the PDCCH candidates comprising the number of PDCCH candidates in the slot;
and
a radio frequency (RF) interface, configured to provide, to RF circuitry, data for processing the PDCCH candidates.

5 more elements

A computer readable storage device storing executable instructions that, in response to execution, cause one or more processors of a user equipment (UE) to perform operations, the operations comprising:

processing physical downlink control channel (PDCCH) candidates of a PDCCH in a slot to perform channel estimation across search spaces in the slot;
selectively determining a number of PDCCH candidates to be dropped from monitoring based on a priority rule and different priorities of the PDCCH candidates, wherein a choice between either dropping the PDCCH candidates by starting from a highest aggregation level (AL) or a lowest AL is based on whether a control channel element (CCE) budget is exceeded, a blind decoding budget is exceeded, and both a CCE budget and a blind decoding budget is exceeded;
and
satisfying a threshold level of blind decoding operations across a plurality of slots of the PDCCH by monitoring at least a portion of the PDCCH candidates while concurrently skipping another portion of the PDCCH candidates comprising the number of PDCCH candidates in the slot.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 16/361,981Filed 22 Mar 2019 · us provisional application
Priority: 22 Mar 2018
Published: US 2019/0223164 A118 Jul 2019
Granted: 19 Oct 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04L 25/0204
Channel estimation: of multiple channels
H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal
H04L 5/00
Arrangements affording multiple use of the transmission path
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals