US 12,355,683 B2 · Techniques to perform energy scans in new radio

Abstract

Methods, systems, and devices for wireless communications are described. Aspects of the present disclosure describe a quick scanning method to reject global synchronization channel numbers (GSCNs) that do not include a synchronization signal block (SSB). The quick scanning method utilizes down-sampling techniques to reduce complexity associated with scanning many GSCNs for an SSB. For example, a user equipment (UE) may down-sample a signal to obtain a coarse signal subset (e.g., by using coarse bin sizes, sampling a portion of symbols). The UE may perform a fast Fourier Transform, along with one or more data processing techniques, to obtain a spectrogram corresponding to the signal. While the spectrogram may represent the signal in the frequency domain with reduced resolution, and may include energy information corresponding to different frequencies. The UE may utilize the spectrogram to examine frequencies corresponding to GSCNs to detect if an SSB is present.

Claims30

Dependent claims

A method for wireless communication at a user equipment (UE), comprising:

receiving a downlink signal comprising a synchronization signal block at a frequency corresponding to a global synchronization channel number, the synchronization signal block spanning across a set of symbol periods in time domain and a set of subcarriers in frequency domain;
analyzing a portion of each symbol period of the set of symbol periods in the time domain across a subset of the set of subcarriers in the frequency domain, wherein analyzing the portion of each symbol period comprises obtaining one or more energy measurements during the portion of each symbol period;
identifying an energy pattern corresponding to the synchronization signal block based at least in part on a comparison of the one or more energy measurements obtained from the analyzing;
and
establishing a connection with a network entity based at least in part on the identified energy pattern.

2 more elements

An apparatus for wireless communication at a user equipment (UE), comprising:

at least one processor;
and
memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the UE to:
receive a downlink signal comprising a synchronization signal block at a frequency corresponding to a global synchronization channel number, the synchronization signal block spanning across a set of symbol periods in time domain and a set of subcarriers in frequency domain;
analyze a portion of each symbol period of the set of symbol periods in the time domain across a subset of the set of subcarriers in the frequency domain, wherein analyzing the portion of each symbol period comprises obtaining one or more energy measurements during the portion of each symbol period;
identify an energy pattern corresponding to the synchronization signal block based at least in part on a comparison of the one or more energy measurements obtained from the analyzing;
and
establish a connection with a network entity based at least in part on the identified energy pattern.

5 more elements

An apparatus for wireless communication at a user equipment (UE), comprising:

means for receiving a downlink signal comprising a synchronization signal block at a frequency corresponding to a global synchronization channel number, the synchronization signal block spanning across a set of symbol periods in time domain and a set of subcarriers in frequency domain;
means for analyzing a portion of each symbol period of the set of symbol periods in the time domain across a subset of the set of subcarriers in the frequency domain, wherein analyzing the portion of each symbol period comprises obtaining one or more energy measurements during the portion of each symbol period;
means for identifying an energy pattern corresponding to the synchronization signal block based at least in part on a comparison of the one or more energy measurements obtained from the analyzing;
and
means for establishing a connection with a network entity based at least in part on the identified energy pattern.

2 more elements

A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by at least one processor to:

receive a downlink signal comprising a synchronization signal block at a frequency corresponding to a global synchronization channel number, the synchronization signal block spanning across a set of symbol periods in time domain and a set of subcarriers in frequency domain;
analyze a portion of each symbol period of the set of symbol periods in the time domain across a subset of the set of subcarriers in the frequency domain, wherein analyzing the portion of each symbol period comprises obtaining one or more energy measurements during the portion of each symbol period;
identify an energy pattern corresponding to the synchronization signal block based at least in part on a comparison of the one or more energy measurements obtained from the analyzing;
and
establish a connection with a network entity based at least in part on the identified energy pattern.

2 more elements

Dependencies are inferred from the claim text.

Techniques to perform energy scans in new radio

Life of this patent

Techniques to perform energy scans in new radio

Life of this patent

Abstract

Claims30