EP-4740660-A1 - METHOD AND APPARATUS FOR TRANSMISSIONS AND RECEPTIONS IN FULL-DUPLEX SYSTEMS

EP4740660A1EP 4740660 A1EP4740660 A1EP 4740660A1EP-4740660-A1

Abstract

Methods and apparatuses for transmissions and receptions in full-duplex systems. A method of operating a user equipment (UE) includes receiving a first candidate subband full-duplex (SBFD) configuration associated with a first transmission configuration indicator (TCI) state configuration on a cell; receiving a second candidate SBFD configuration associated with a second TCI state configuration on the cell; and identifying a TCI state code point. The method further includes selecting (i) the first candidate SBFD configuration when a value of the TCI state code point is associated with the first TCI state configuration or (ii) the second candidate SBFD configuration when the value of the TCI state code point is associated with the second TCI state configuration and receiving or transmitting a channel or signal based on the selected SBFD configuration.

Inventors

RUDOLF, MARIAN
PAPASAKELLARIOU, ARISTIDES
FARAG, Emad Nader

Assignees

Samsung Electronics Co., Ltd.

Dates

Publication Date: 20260513
Application Date: 20240806

Claims (15)

A method of operating a user equipment (UE), the method comprising: receiving a first candidate subband full-duplex (SBFD) configuration associated with a first transmission configuration indicator (TCI) state configuration on a cell; receiving a second candidate SBFD configuration associated with a second TCI state configuration on the cell; identifying a TCI state code point; selecting (i) the first candidate SBFD configuration when a value of the TCI state code point is associated with the first TCI state configuration or (ii) the second candidate SBFD configuration when the value of the TCI state code point is associated with the second TCI state configuration; receiving or transmitting a channel or signal based on the selected SBFD configuration, wherein the value of the TCI state code point is from a set of values associated with a set of transmit-receive points (TRPs).
The method of Claim 1, further comprising receiving a downlink control information (DCI) format or a medium access control (MAC) layer control element (CE) that includes the TCI state code point.
The method of claim 1, wherein: a first TCI state code point from the first TCI state configuration or a second TCI state code point from the second TCI state configuration includes: a downlink (DL) TCI state, an uplink (UL) TCI state, a joint TCI state, or a pair of a DL TCI state and an UL TCI state; and a TCI state includes a source reference signal for quasi-colocation or a source reference signal for spatial information.
The method of claim 1, further comprising: receiving a physical downlink shared channel (PDSCH) configuration; determining a downlink (DL) reception parameter in a slot or symbol for a PDSCH reception instance based on the selected SBFD configuration; and receiving the PDSCH based on the DL reception parameter.
The method of claim 1, further comprising: receiving a physical uplink shared channel (PUSCH) configuration; determining an uplink (UL) transmission parameter in a slot or symbol for a PUSCH transmission instance based on the selected SBFD configuration; and transmitting the PUSCH based on the UL transmission parameter.
The method of claim 1, wherein: the first candidate SBFD configuration or the second candidate SBFD configuration includes a frequency-domain restriction for transmissions associated with the set of TRPs, and a transmission of a physical uplink shared channel (PUSCH) is allowed on a TRP in the set of TRPs when a frequency-domain allocation of the PUSCH is within a range of the frequency-domain restriction.
The method of claim 1, wherein: the first candidate SBFD configuration or the second candidate SBFD configuration includes a frequency-domain restriction for receptions associated with the set of TRPs, and a reception of a physical downlink shared channel (PDSCH) is allowed on a TRP in the set of TRPs when a frequency-domain allocation of the PDSCH is within a range of the frequency-domain restriction.
A user equipment (UE), comprising: a transceiver configured to: receive a first candidate subband full-duplex (SBFD) configuration associated with a first transmission configuration indicator (TCI) state configuration on a cell; and receive a second candidate SBFD configuration associated with a second TCI state configuration on the cell; and a processor operably coupled to the transceiver, the processor configured to: identify a TCI state code point; and select (i) the first candidate SBFD configuration when a value of the TCI state code point is associated with the first TCI state configuration or (ii) the second candidate SBFD configuration when the value of the TCI state code point is associated with the second TCI state configuration, wherein the transceiver is further configured to receive or transmit a channel or signal based on the selected SBFD configuration, and wherein the value of the TCI state code point is from a set of values associated with a set of transmit-receive points (TRPs).
The UE of Claim 8, wherein the transceiver is further configured to receive a downlink control information (DCI) format or a medium access control (MAC) layer control element (CE) that includes the TCI state code point.
The UE of Claim 8, wherein: a first TCI state code point from the first TCI state configuration or a second TCI state code point from the second TCI state configuration includes: a downlink (DL) TCI state, an uplink (UL) TCI state, a joint TCI state, or a pair of a DL TCI state and an UL TCI state; and a TCI state includes a source reference signal for quasi-colocation or a source reference signal for spatial information.
The UE of Claim 8, wherein: the transceiver is further configured to receive a physical downlink shared channel (PDSCH) configuration; the processor is further configured to determine a downlink (DL) reception parameter in a slot or symbol for a PDSCH reception instance based on the selected SBFD configuration; and the transceiver is further configured to receive the PDSCH based on the DL reception parameter.
The UE of Claim 8, wherein: the transceiver is further configured to receive a physical uplink shared channel (PUSCH) configuration; the processor is further configured to determine an uplink (UL) transmission parameter in a slot or symbol for a PUSCH transmission instance based on the selected SBFD configuration; and the transceiver is further configured to transmit the PUSCH based on the UL transmission parameter.
The UE of Claim 8, wherein: the first candidate SBFD configuration or the second candidate SBFD configuration includes a frequency-domain restriction for transmissions associated with the set of TRPs, and a transmission of a physical uplink shared channel (PUSCH) is allowed on a TRP in the set of TRPs when a frequency-domain allocation of the PUSCH is within a range of the frequency-domain restriction.
The UE of Claim 8, wherein: the first candidate SBFD configuration or the second candidate SBFD configuration includes a frequency-domain restriction for receptions associated with the set of TRPs, and a reception of a physical downlink shared channel (PDSCH) is allowed on a TRP in the set of TRPs when a frequency-domain allocation of the PDSCH is within a range of the frequency-domain restriction.
A base station (BS), comprising: a processor; and a transceiver operably coupled to the processor, the transceiver configured to: transmit a first candidate subband full-duplex (SBFD) configuration associated with a first transmission configuration indicator (TCI) state configuration on a cell; and transmit a second candidate SBFD configuration associated with a second TCI state configuration on the cell; and receive or transmit a channel or signal associated with a SBFD configuration, and wherein the SBFD configuration is from (i) the first candidate SBFD configuration when a value of a TCI state code point is associated with the first TCI state configuration or (ii) the second candidate SBFD configuration when the value of the TCI state code point is associated with the second TCI state configuration, and wherein the value of the TCI state code point is from a set of values associated with a set of transmit-receive points (TRPs).

Description

METHOD AND APPARATUS FOR TRANSMISSIONS AND RECEPTIONS IN FULL-DUPLEX SYSTEMS The present disclosure relates generally to wireless communication systems and, more specifically, the present disclosure relates to transmissions and receptions in full-duplex systems in a wireless communication system. 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in “Sub 6GHz” bands such as 3.5GHz, but also in “Above 6GHz” bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies. At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service. Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning. Moreover, there has been ongoing standardization in air interface architecture/protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture/service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions. As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication. Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Or