US 12,726,857 B2 · Bandwidth part mismatch detection and mitigation

Abstract

The described embodiments regard detecting a bandwidth part (BWP) mismatch between a wireless device and a cellular wireless network base station and performing mitigation to correct for the BWP mismatch. The wireless device can detect a BWP mismatch, based on content of a downlink control information (DCI) message indicating to switch BWP configurations, which is inconsistent with a scheduled downlink resource or granted uplink resource indicated in the DCI message occurring before completion of a BWP switching delay time period. The wireless device can monitor for DCI messages, after switching BWP configurations, in accordance with a previous BWP configuration for a monitoring time period to confirm use of the new BWP configuration or to detect a BWP mismatch. Responsive to detecting a BWP mismatch, the wireless device switches back to the previous BWP configuration without waiting to complete the BWP switching delay time period for switching BWP configurations.

Claims20

Dependent claims

A method for bandwidth part (BWP) mismatch detection for a cellular wireless connection between a wireless device and a base station of a cellular wireless network, the method comprising:

by the wireless device:
receiving, from the base station via a second BWP configuration, a downlink control information (DCI) message that includes an indication for the wireless device to communicate with the base station via a first BWP configuration;
detecting, based on content of the DCI message, a BWP mismatch between the second BWP configuration presently used by the wireless device and the first BWP configuration presently used by the base station;
and
responsive to the BWP mismatch detection, transitioning to use the first BWP configuration without waiting to complete a predetermined BWP switching delay time period for switching BWP configurations.

2 more elements

A wireless device configured for bandwidth part (BWP) mismatch detection for a cellular wireless connection between the wireless device and a base station of a cellular wireless network, the wireless device comprising:

one or more antennas;
and
a baseband processor communicatively coupled to the one or more antennas and a memory storing instructions that when executed configure the wireless device to:
receive, from the base station via a second BWP configuration, a downlink control information (DCI) message that includes an indication for the wireless device to communicate with the base station using a first BWP configuration;
detect, based on content of the DCI message, a BWP mismatch between the second BWP configuration presently used by the wireless device and the first BWP configuration presently used by the base station;
and
responsive to detecting the BWP mismatch, transition to use the first BWP configuration without waiting to complete a predetermined BWP switching delay time period for switching BWP configurations.

4 more elements

Dependencies are inferred from the claim text.

Bandwidth part mismatch detection and mitigation

Life of this patent

Bandwidth part mismatch detection and mitigation

Life of this patent

Abstract

Claims20