US 10,834,690 B2 · Staggered synchronization signal blocks in frequency sub-bands for beamformed wireless communications

Abstract

Methods, systems, and devices for wireless communications are described that provide staggered synchronization signal blocks (SSBs) in frequency sub-bands for beamformed wireless communications. Transmissions of SSBs and control channel transmissions (e.g., remaining minimum system information (RMSI) physical downlink control channel (PDCCH) transmissions) may use multiple transmission beams in a beam sweeping procedure. The SSB transmissions may be transmitted using transmission beams that span one frequency sub-band of a number of available frequency sub-bands, and the control channel transmissions may use transmission beams that span two or more of the frequency sub-bands. The SSB beam sweeping procedure may be performed separately during staggered, non-overlapping time periods for each frequency sub-band of the number of frequency sub-bands. Each of the of SSBs may indicate a reference timing of the base station used to identify a set of resources (e.g., a control resource set (CORESET)) that carries control channel transmissions.

Claims28

Dependent claims

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

monitoring one or more of a plurality of frequency sub-bands for a synchronization signal block (SSB) from a base station, wherein each of the plurality of frequency sub-bands carries a non-overlapping instance of the SSB;
receiving a first instance of the SSB via at least a first frequency sub-band of the plurality of frequency sub-bands based at least in part on the monitoring;
determining a reference timing of the base station based at least in part on one or more of information from the first instance of the SSB or a frequency location of the first frequency sub-band relative to a reference frequency sub-band of the plurality of frequency sub-bands;
identifying, based at least in part on the reference timing, a set of resources for a control channel transmission from the base station, wherein the set of resources spans two or more of the plurality of frequency sub-bands;
and
receiving the control channel transmission via the set of resources.

3 more elements

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

a processor,
memory in electronic communication with the processor;
and
instructions stored in the memory, wherein the instructions are executable by the processor to:
monitor one or more of a plurality of frequency sub-bands for a synchronization signal block (SSB) from a base station, wherein each of the plurality of frequency sub-bands carries a non-overlapping instance of the SSB;
receive a first instance of the SSB via at least a first frequency sub-band of the plurality of frequency sub-bands based at least in part on the monitoring;
determine a reference timing of the base station based at least in part on one or more of information from the first instance of the SSB or a frequency location of the first frequency sub-band relative to a reference frequency sub-band of the plurality of frequency sub-bands;
identify, based at least in part on the reference timing, a set of resources for a control channel transmission from the base station, wherein the set of resources spans two or more of the plurality of frequency sub-bands;
and
receive the control channel transmission via the set of resources.

7 more elements

Dependencies are inferred from the claim text.

Staggered synchronization signal blocks in frequency sub-bands for beamformed wireless communications

Life of this patent

Staggered synchronization signal blocks in frequency sub-bands for beamformed wireless communications

Life of this patent

Abstract

Claims28