Modified super-quadrature amplitude modulation (QAM) modulation schemes based on low order mother QAM

A user equipment (UE), comprising:

• one or more processors;
• and
• one or more memories coupled with the one or more processors and storing processor-executable code that, when executed by the one or more processors, is configured to cause the UE to:
• receive, from a network node, a first message querying a capability of the UE to decode transmissions modulated in accordance with a modified high order quadrature amplitude modulation (QAM) scheme associated with a first constellation having a first group of regions, each region of the first group of regions comprising a respective second constellation associated with a low order QAM scheme, each region of the first group of regions being separated from each adjacent region of the first group of regions by a gap that is larger than a spacing between adjacent constellation points in any one of the second constellations;
• transmit, to the network node, a second message indicating the capability of the UE to decode the transmissions modulated in accordance with the modified high order QAM scheme in accordance with receiving the first message;
• and
• receive, from the network node, a transmission in accordance with the modified high order QAM scheme, the transmission conveying a group of symbols, each symbol of the group of symbols indicating a respective group of bits that includes:
• a first set of bits indicating a first region of the first group of regions associated with the modified high order QAM scheme, and
• a second set of encoded bits indicating a constellation point in a respective second constellation comprised in the first region.

A method for wireless communication at a network node, comprising:

• transmitting a first message querying a capability of a user equipment (UE) to decode transmissions modulated in accordance with a modified high order quadrature amplitude modulation (QAM) scheme associated with a first constellation having a first group of regions, each region of the first group of regions comprising a respective second constellation associated with a low order QAM scheme, each region of the first group of regions being separated from each adjacent region of the first group of regions by a gap that is larger than a spacing between adjacent constellation points in any one of the second constellations;
• receiving, from the UE, a second message indicating the capability of the UE to decode the transmissions modulated in accordance with the modified high order QAM scheme in accordance with receiving the first message;
• and
• transmitting a transmission in accordance with the modified high order QAM scheme, the transmission conveying a group of symbols, each symbol of the group of symbols indicating a respective group of bits that includes:
• a first set of bits indicating a first region of the first group of regions associated with the modified high order QAM scheme, and
• a second set of encoded bits indicating a constellation point in a respective second constellation comprised in the first region.

A network node, comprising:

• one or more processors;
• and
• one or more memories coupled with the one or more processors and storing processor-executable code that, when executed by the one or more processors, is configured to cause the network node to:
• transmit a first message querying a capability of a user equipment (UE) to decode transmissions modulated in accordance with a modified high order quadrature amplitude modulation (QAM) scheme associated with a first constellation having a first group of regions, each region of the first group of regions comprising a respective second constellation associated with a low order QAM scheme, each region of the first group of regions being separated from each adjacent region of the first group of regions by a gap that is larger than a spacing between adjacent constellation points in any one of the second constellations;
• receive, from the UE, a second message indicating the capability of the UE to decode the transmissions modulated in accordance with the modified high order QAM scheme in accordance with receiving the first message;
• and
• transmit a transmission in accordance with the modified high order QAM scheme, the transmission conveying a group of symbols, each symbol of the group of symbols indicating a respective group of bits that includes:
• a first set of bits indicating a first region of the first group of regions associated with the modified high order QAM scheme, and
• a second set of encoded bits indicating a constellation point in a respective second constellation comprised in the first region.