US-20260128812-A1 - SUPPORT FOR DATA-AIDED COMMUNICATIONS

US20260128812A1US 20260128812 A1US20260128812 A1US 20260128812A1US-20260128812-A1

Abstract

A user equipment (UE) includes a transceiver configured to: transmit, to a base station (BS), UE capability information that indicates support for data-aided modulation constellations, wherein the data-aided modulation constellations support a first transmission mode utilizing data symbols for channel estimation, and receive, from the BS, a modulation and coding scheme (MCS) indication. The UE also includes a processor operably coupled to the transceiver and configured to: determine, based on the MCS indication, a first data-aided modulation constellation, and generate first modulation symbols from input bits according to the first determined data-aided modulation constellation. The transceiver is further configured to transmit, to the BS, the first modulation symbols.

Inventors

Caleb K. Lo
Joonyoung Cho
Jianzhong Zhang
Fabrizio Carpi

Assignees

SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20250904

Claims (20)

1 . A user equipment (UE) comprising: a transceiver configured to: transmit, to a base station (BS), UE capability information that indicates support for data-aided modulation constellations, wherein the data-aided modulation constellations support a first transmission mode utilizing data symbols for channel estimation, and receive, from the BS, a modulation and coding scheme (MCS) indication; and a processor operably coupled to the transceiver and configured to: determine, based on the MCS indication, a first data-aided modulation constellation, and generate first modulation symbols from input bits according to the first determined data-aided modulation constellation, wherein the transceiver is further configured to transmit, to the BS, the first modulation symbols.
2 . The UE of claim 1 , wherein: the transceiver is further configured to receive, from the BS, data-aided transmission configuration information that indicates a mapping between MCS indices and the data-aided modulation constellations supported by the UE; the processor is further configured to: determine, based on the MCS indication, an MCS index; and the first data-aided modulation constellation is determined based on the MCS index and the mapping.
3 . The UE of claim 2 , wherein: the data-aided transmission configuration information comprises information that maps the MCS indices to entries in a lookup table (LUT), the entries in the LUT include one or more of an MCS index, a modulation order, a target code rate, or an index to a corresponding data-aided modulation constellation, and the processor is further configured to generate the first modulation symbols from the input bits according to the first data-aided modulation constellation that maps to the determined MCS index.
4 . The UE of claim 2 , wherein the data-aided transmission configuration information includes one or more of an indicator for enabling data-aided transmission, a list of demodulation reference signal (DMRS) patterns for the first transmission mode, a list of modulation constellations, a list of multi-antenna precoders for the first transmission mode, an uplink shared channel indicator, or DMRS frequency-hopping parameters for the first transmission mode.
5 . The UE of claim 1 , wherein the transceiver is further configured to: transmit, to the BS, a recommendation to switch a transmission mode based on local data associated with the UE, the transmission mode comprising the first transmission mode or a second transmission mode utilizing reference signals for channel estimation; and transmit, to the BS, second modulation symbols, wherein the second modulation symbols are generated based on an MCS indication for the switched transmission mode.
6 . The UE of claim 1 , wherein the transceiver is further configured to: receive, from the BS, a command to switch a transmission mode, the transmission mode comprising the first transmission mode or a second transmission mode using reference signals for channel estimation; and transmit, to the BS, second modulation symbols, wherein the second modulation symbols are generated based on an MCS indication for the switched transmission mode.
7 . The UE of claim 1 , wherein: the transceiver is further configured to: transmit, to the BS, assistance information for the first transmission mode, and receive, from the BS, the MCS indication based on the assistance information; and the assistance information comprises at least one of: a recommended MCS index for the first transmission mode based on local data associated with the UE and a pre-defined time upon lapse of which the UE is to switch to the first transmission mode from a second transmission mode using reference signals for channel estimation; a recommendation to switch from the first transmission mode to the second transmission mode based on the local data and a pre-defined time upon lapse of which the UE is to switch from the first transmission mode to the second transmission mode; a UE trajectory information; a sensing information associated with the UE; and downlink channel measurements based on received demodulation reference signals (DMRS).
8 . A base station (BS) comprising: a transceiver configured to: receive, from a user equipment (UE), UE capability information that indicates support for data-aided modulation constellations, wherein the data-aided modulation constellations support a first transmission mode utilizing data symbols for channel estimation; transmit, to the UE a modulation and coding scheme (MCS) indication; and receive, from the UE, first modulation symbols generated from input bits according to a first data-aided modulation constellation determined based on the MCS indication.
9 . The BS of claim 8 , wherein: the transceiver is further configured to transmit, to the UE, data-aided transmission configuration information that indicates a mapping between MCS indices and the data-aided modulation constellations supported by the UE; an MCS index is determined, by the UE, based on the MCS indication; and the first data-aided modulation constellation is determined, by the UE, based on the MCS index and the mapping.
10 . The BS of claim 9 , wherein: the data-aided transmission configuration information comprises information that maps the MCS indices to entries in a lookup table (LUT), the entries in the LUT include one or more of an MCS index, a modulation order, a target code rate, or an index to a corresponding data-aided modulation constellation, and the first modulation symbols are generated, by the UE, from the input bits according to the first data-aided modulation constellation that maps to the determined MCS index.
11 . The BS of claim 8 , wherein the transceiver is further configured to: receive, from the UE, a recommendation to switch a transmission mode based on local data associated with the UE, the transmission mode comprising the first transmission mode or a second transmission mode utilizing reference signals for channel estimation; and receive, from the UE, second modulation symbols, wherein the second modulation symbols are generated based on an MCS indication for the switched transmission mode.
12 . The BS of claim 8 , wherein the transceiver is further configured to: transmit, to the UE, a command to switch a transmission mode, the transmission mode comprising the first transmission mode or a second transmission mode using reference signals for channel estimation; and receive, from the UE, second modulation symbols, wherein the second modulation symbols are generated based on an MCS indication for the switched transmission mode.
13 . The BS of claim 8 , wherein: the transceiver is further configured to: receive, from the UE, assistance information for the first transmission mode, and transmit, to the UE, the MCS indication based on the assistance information; and the assistance information comprises at least one of: a recommended MCS index for the first transmission mode based on local data associated with the UE and a pre-defined time upon lapse of which the UE is to switch to the first transmission mode from a second transmission mode using reference signals for channel estimation; a recommendation to switch from the first transmission mode to the second transmission mode based on the local data and a pre-defined time upon lapse of which the UE is to switch from the first transmission mode to the second transmission mode; a UE trajectory information; a sensing information associated with the UE; and downlink channel measurements based on received demodulation reference signals (DMRS).
14 . A method performed by a user equipment (UE), the method comprising: transmitting, to a base station (BS), UE capability information that indicates support for data-aided modulation constellations, wherein the data-aided modulation constellations support a first transmission mode utilizing data symbols for channel estimation, receiving, from the BS, a modulation and coding scheme (MCS) indication; determining, based on the MCS indication, a first data-aided modulation constellation; generating first modulation symbols from input bits according to the first determined data-aided modulation constellation; and transmitting, to the BS, the first modulation symbols.
15 . The method of claim 14 , further comprising: receiving, from the BS, data-aided transmission configuration information that indicates a mapping between MCS indices and the data-aided modulation constellations supported by the UE; and determining, based on the MCS indication, an MCS index, wherein the first data-aided modulation constellation is determined based on the MCS index and the mapping.
16 . The method of claim 15 , wherein: the data-aided transmission configuration information comprises information that maps the MCS indices to entries in a lookup table (LUT), the entries in the LUT include one or more of an MCS index, a modulation order, a target code rate, or an index to a corresponding data-aided modulation constellation, and the first modulation symbols are generated from the input bits according to the first data-aided modulation constellation that maps to the determined MCS index.
17 . The method of claim 15 , wherein the data-aided transmission configuration information includes one or more of an indicator for enabling data-aided transmission, a list of demodulation reference signal (DMRS) patterns for the first transmission mode, a list of modulation constellations, a list of multi-antenna precoders for the first transmission mode, an uplink shared channel indicator, or DMRS frequency-hopping parameters for the first transmission mode.
18 . The method of claim 14 , further comprising: transmitting, to the BS, a recommendation to switch a transmission mode based on local data associated with the UE, the transmission mode comprising the first transmission mode or a second transmission mode utilizing reference signals for channel estimation; and transmitting, to the BS, second modulation symbols, wherein the second modulation symbols are generated based on an MCS indication for the switched transmission mode.
19 . The method of claim 14 , further comprising: receiving, from the BS, a command to switch a transmission mode, the transmission mode comprising the first transmission mode or a second transmission mode using reference signals for channel estimation; and transmitting, to the BS, second modulation symbols, wherein the second modulation symbols are generated based on an MCS indication for the switched transmission mode.
20 . The method of claim 14 , further comprising: transmitting, to the BS, assistance information for the first transmission mode, and receiving, from the BS, the MCS indication based on the assistance information, wherein the assistance information comprises at least one of: a recommended MCS index for the first transmission mode based on local data associated with the UE and a pre-defined time upon lapse of which the UE is to switch to the first transmission mode from a second transmission mode using reference signals for channel estimation; a recommendation to switch from the first transmission mode to the second transmission mode based on the local data and a pre-defined time upon lapse of which the UE is to switch from the first transmission mode to the second transmission mode; a UE trajectory information; a sensing information associated with the UE; and downlink channel measurements based on received demodulation reference signals (DMRS).

Description

CROSS-REFERENCE TO RELATED APPLICATION AND CLAIM OF PRIORITY The present application claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application No. 63/716,495 filed on Nov. 5, 2024, which is hereby incorporated by reference in its entirety. TECHNICAL FIELD This disclosure relates generally to wireless networks. More specifically, this disclosure relates to a method and apparatus for data-aided communications. BACKGROUND The demand of wireless data traffic is rapidly increasing due to the growing popularity among consumers and businesses of smart phones and other mobile data devices, such as tablets, “note pad” computers, net books, eBook readers, and machine type of devices. In order to meet the high growth in mobile data traffic and support new applications and deployments, improvements in radio interface efficiency and coverage are of paramount importance. 5th generation (5G) or new radio (NR) mobile communications is recently gathering increased momentum with all the worldwide technical activities on the various candidate technologies from industry and academia. The candidate enablers for the 5G/NR mobile communications include massive antenna technologies, from legacy cellular frequency bands up to high frequencies, to provide beamforming gain and support increased capacity, new waveform (e.g., a new radio access technology (RAT)) to flexibly accommodate various services/applications with different requirements, new multiple access schemes to support massive connections, and so on. SUMMARY This disclosure provides apparatuses and methods for data-aided communications in wireless communication systems. In one embodiment, a user equipment (UE) is provided. The UE includes a transceiver configured to: transmit, to a base station (BS), UE capability information that indicates support for data-aided modulation constellations, wherein the data-aided modulation constellations support a first transmission mode utilizing data symbols for channel estimation, and receive, from the BS, a modulation and coding scheme (MCS) indication. The UE also includes a processor operably coupled to the transceiver and configured to: determine, based on the MCS indication, a first data-aided modulation constellation, and generate first modulation symbols from input bits according to the first determined data-aided modulation constellation. The transceiver is further configured to transmit, to the BS, the first modulation symbols. In another embodiment, a BS is provided. The BS includes a transceiver configured to: receive, from a UE, UE capability information that indicates support for data-aided modulation constellations, wherein the data-aided modulation constellations support a first transmission mode utilizing data symbols for channel estimation; transmit, to the UE an MCS indication; and receive, from the UE, first modulation symbols generated from input bits according to a first data-aided modulation constellation determined based on the MCS indication. In yet another embodiment, a method performed by a UE is provided. The method includes transmitting, to a BS, UE capability information that indicates support for data-aided modulation constellations, where the data-aided modulation constellations support a first transmission mode utilizing data symbols for channel estimation. The method also includes receiving, from the BS, an MCS indication, determining, based on the MCS indication, a first data-aided modulation constellation, generating first modulation symbols from input bits according to the first determined data-aided modulation constellation; and transmitting, to the BS, the first modulation symbols. Other technical features may be readily apparent to one skilled in the art from the following figures, descriptions, and claims. Before undertaking the DETAILED DESCRIPTION below, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term “couple” and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another. The terms “transmit,” “receive,” and “communicate,” as well as derivatives thereof, encompass both direct and indirect communication. The terms “include” and “comprise,” as well as derivatives thereof, mean inclusion without limitation. The term “or” is inclusive, meaning and/or. The phrase “associated with,” as well as derivatives thereof, means to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have, have a property of, have a relationship to or with, or the like. The term “controller” means any device, system or part thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and/or fi