US 2022/0104233 A1 · FREQUENCY ADJUSTMENT IN WIRELESS TRANSMISSION AND RECEPTION

Abstract

Timing adjustments or frequency offsets that at least partially compensate for Doppler shift (e.g., due to distance of a satellite transmitter or relative speed of a terrestrial receiver) of a signal, physical channel, or resource during wireless transmission are configured. The characteristics compensated comprise one of resource element (RE) mapping, channel state information reference signal (CSI-RS) configuration, bandwidth part (BWP) configuration, or control resource set (CORESET) configuration. Information indicating the multiple configurations is transmitted from a base station (BS) to at least one user equipment (UE). The timing adjustments or frequency offsets are specifically configured for one UE, a group of UEs, or the UEs served by a single serving cell. Joint transmission from multiple cells/TRPs/spotbeams may involve partial/full subcarrier alignment.

Claims20

Dependent claims

A first transmission-reception point (TRP) configured for joint transmission or reception between multiple TRPs, the first TRP comprising:

a processor configured to apply one of a timing adjustment or a frequency offset between the TRPs for one or more of signals, channels, or resources;
and
a transceiver operatively coupled to the processor and configured to
signal to a second TRP one of the applied timing adjustment or frequency offset value or a requested timing adjustment or frequency offset value,
signal to at least one user equipment (UE) the timing adjustment or frequency offset value to apply for transmission or reception of the one or more of the signals, channels, or resources, and
transmit the one or more of the signals, channels, or resources jointly with the second TRP on one or more frequencies.

3 more elements

A user equipment (UE) configured for joint transmission or reception with multiple transmission-reception points (TRPs), the UE comprising:

a transceiver configured to
receive a timing adjustment or frequency offset value to be applied for transmission or reception of one or more of signals, channels, or resources transmitted by a first TRP jointly with a second TRP, and
receive the one or more of the signals, channels, or resources from the first TRP and the second TRP on one or more frequencies;
and
a processor configured to apply one of the timing adjustment or frequency offset the received one or more of the signals, channels, or resources.

2 more elements

A method performed by a first transmission-reception point (TRP) configured for of joint transmission or reception between multiple TRPs, the method comprising:

applying one of a timing adjustment or a frequency offset between the TRPs for one or more of signals, channels, or resources;
signaling to a second TRP one of the applied timing adjustment or frequency offset value or a requested timing adjustment or frequency offset value;
signaling to at least one user equipment (UE) the timing adjustment or frequency offset value to be applied for transmission or reception of the one or more of the signals, channels, or resources;
and
transmitting the one or more of the signals, channels, or resources jointly with the second TRP on one or more frequencies.

2 more elements

Dependencies are inferred from the claim text.

Frequency adjustment in wireless transmission and reception

Life of this patent

Frequency adjustment in wireless transmission and reception

Life of this patent

Abstract

Claims20