US 2026/0303426 A1 · METHOD AND APPARATUS FOR SUPPORT OF RECTANGULAR NON-UNIFORM MODULATION CONSTELLATIONS

Abstract

UE capability information indicating support for rectangular non-uniform modulation constellations (NUMCs) and rectangular NUMC configuration information are exchanged by a UE and BS. Based on an MCS indication corresponding to a rectangular NUMC, bits to be transmitted are mapped to the indicated NUMC and corresponding modulation symbols are transmitted. Configuration information may include indicator(s) enabling/disabling MCS index mapping to rectangular NUMCs, rectangular NUMC identifiers, or rectangular NUMC bit-to-symbol mappings, either as mapping tables or coefficient sets. UE assistance information may include UE trajectory, UE sensor information, or an MCS index for a recommended rectangular NUMC. A fallback indication or command for switching to conventional constellations may be sent from the UE to the BS or from the BS to the UE.

Claims20

Dependent claims

A user equipment (UE) comprising:

a transceiver configured to
send, to a base station, capability information including an indication of support for rectangular non-uniform modulation constellations,
receive, from the base station, rectangular non-uniform modulation constellation configuration information, and
receive, from the base station, a modulation and coding scheme (MCS) indication;
and
at least one processing device coupled to the transceiver, the at least one processing device configured to map a plurality of bits to be transmitted to a rectangular non-uniform modulation constellation based on the MCS indication,
wherein the transceiver is configured to transmit modulation symbols corresponding to the rectangular non-uniform modulation constellation to which the plurality of bits were mapped.

4 more elements

A method performed by a user equipment (UE) in a wireless communications system, the method comprising:

sending, to a base station, capability information including an indication of support for rectangular non-uniform modulation constellations;
receiving, from the base station, rectangular non-uniform modulation constellation configuration information;
receiving, from the base station, a modulation and coding scheme (MCS) indication;
mapping a plurality of bits to be transmitted to a rectangular non-uniform modulation constellation based on the MCS indication;
and
transmitting modulation symbols corresponding to the rectangular non-uniform modulation constellation to which the plurality of bits were mapped.

3 more elements

A base station (BS) comprising:

at least one processing device;
a transceiver coupled to the at least one processing device, the transceiver configured to
receive, from a user equipment (UE), capability information including an indication of support for rectangular non-uniform modulation constellations,
send, to the UE, rectangular non-uniform modulation constellation configuration information, and
send, to the UE, a modulation and coding scheme (MCS) indication, wherein a plurality of bits to be transmitted are mapped to a rectangular non-uniform modulation constellation based on the MCS indication, and
receive modulation symbols corresponding to the rectangular non-uniform modulation constellation to which the plurality of bits were mapped.

3 more elements

Dependencies are inferred from the claim text.

Method and apparatus for support of rectangular non-uniform modulation constellations

Life of this patent

Method and apparatus for support of rectangular non-uniform modulation constellations

Life of this patent

Abstract

Claims20