Method, architecture, apparatus, and system for subband non-overlapping full-duplex operation of wireless transceiver units

Abstract

Procedures, methods, architectures, apparatus, systems, devices, and computer program products for a wireless transmit / receive unit (WTRU) capable of subband (SB) non-overlapping full-duplex (SBFD) operation to efficiently manage self-interference from uplink transmit (UL SB) to downlink receive (DL SB). The WTRU receives first SBFD configuration information related to the SBFD operation of network nodes (NNs) in the network, and second SBFD configuration information related to the SBFD operation of the WTRU in the network. The WTRU determines a downlink reference signal (DL RS) resource for link quality detection and performs link quality detection based on measurements of the DL RS resource using at least one NN-SBFD symbol from a first SBFD symbol set contained in the first SBFD configuration information, and / or at least one WTRU-SBFD symbol from a second SBFD symbol set contained in the second SBFD configuration information.

Description

Technical Field

[0001] The present application relates to methods, architectures, apparatuses, and systems for subband non-overlapped full-duplex operation of a wireless transmit / receive unit. Background Art

[0002] The present disclosure relates generally to the fields of communications, software, and coding, including, for example, methods, architectures, apparatuses, and systems related to subband non-overlapped full-duplex operation for wireless transmit / receive units (WTRUs) and network nodes (e.g., gNodeBs). At 3GPP RAN meetings, research items regarding New Radio (NR) have been agreed upon. The feasibility of enabling full-duplex has been investigated, among which subband non-overlapped full-duplex (SFBD) is included. It is desirable to solve some of the key challenges in the implementation of SFBD caused by cross-link interference (CLI). Summary of the Invention

[0003] Hereinafter, methods and apparatuses claimed in accordance with the appended claims for improving subband non-overlapped full-duplex operation for wireless transmit / receive units and base stations are defined and described. Brief Description of the Drawings

[0004] A more detailed understanding can be obtained from the following detailed description given by way of example in conjunction with the accompanying drawings. Like the detailed description, the figures of such drawings are examples. Therefore, the drawings and the detailed description should not be construed as limiting, and other equally valid examples are possible and may actually occur. Furthermore, like reference numerals ("ref.") in the drawings indicate like elements.

[0005] [Figure 1A] It is a system diagram showing an exemplary communication system. [Figure 1B]Figure 1A is a system diagram showing an exemplary wireless transceiver unit (WTRU) that may be used in the communication system shown. [Figure 1C] Figure 1A is a system diagram showing exemplary radio access networks (RANs) and exemplary core networks (CNs) that may be used within the communication system shown. [Figure 1D] Figure 1A is a system diagram showing further exemplary RAN and further exemplary CN that may be used within the communication system shown. [Figure 2-1] This figure shows an example of an SBFD configuration in a TDD framework. [Figure 2-2] This figure shows cross-layer interference (CLI), between gNBs, and between WTRUs. [Figure 3A] This figure shows an example of the first SBFD configuration (gNB-SBFD). [Figure 3B] This figure shows an example of a second SBFD configuration (WTRU1-SBFD). [Figure 3C] This figure shows a more detailed example of the second SBFD configuration (WTRU1-SBFD). [Figure 4] This figure shows an example of dynamic WTRU-SBFD operation. [Figure 5] This figure shows an example of resource allocation adaptation. [Figure 6] This is a flowchart of a method according to one embodiment. [Figure 7] This is a flowchart of a method according to one embodiment. [Figure 8] This is a flowchart of a method according to one embodiment. [Figure 9] This is a flowchart of a method according to one embodiment. [Modes for carrying out the invention]

[0006] The following detailed description includes numerous specific details to provide a complete understanding of the embodiments and / or examples disclosed herein. However, it should be understood that such embodiments and examples may be implemented without some or all of the specific details described herein. In other examples, well-known methods, procedures, components, and circuits are not described in detail so as not to obscure the following description. Furthermore, embodiments and examples not specifically described herein may be implemented in place of, or in combination with, the embodiments and other examples expressly, implicitly, and / or essentially described, disclosed, or otherwise provided herein (collectively, “provided”). Various embodiments are described and / or claimed herein, in which apparatus, systems, devices, etc., and / or any element thereof perform operations, processes, algorithms, functions, etc., and / or any part thereof, but it should be understood that any embodiment described and / or claimed herein assumes that any apparatus, systems, devices, etc., and / or any element thereof is configured to perform any operation, process, algorithm, function, etc., and / or any part thereof.

[0007] Abbreviations and acronyms ACK (Affirmative Response) BLER Block Error Rate BWP bandwidth portion CG-generated Grant C-JT Coherent Joint Transmission CLI Crosslink Interference CLPC Closed-Loop Power Control CORESET Control Resource Set CP cyclic prefix CP-OFDM vs. Conventional OFDM (based on cyclic prefixes) CQI Channel Quality Indicator CRC Cyclic Redundancy Check cri-RSRP CSI-RS Resource Indicator-RSRP CRS cell-specific RS CSI Channel State Information DAI Downlink Assignment Index DCI Downlink Control Information DG Dynamic Grant DL Downlink DM-RS Demodulation Reference Signal DRB Data Radio Bearer FD Full Duplex HARQ Hybrid Automatic Repeat Request HD Half Duplex IAB Integrated Access and Backhaul LTE Long Term Evolution, for example from 3GPP LTE R8 or later L1-RSRP Layer 1-RSRP mTRP Multiple TRP MAC CE MAC Control Element MCS Modulation and Coding Scheme MIMO Multiple Input Multiple Output NACK Negative ACK NC-JT Non-Coherent Joint Transmission NR New Radio OFDM Orthogonal Frequency Division Multiplexing OLPC Open Loop Power Control PC Power Control PDCCH Physical Downlink Control Channel PDSCH Physical Downlink Shared Channel PH Power Headroom PHY Physical Layer PHR Power Headroom Report PL Path Loss PMI Precoding Matrix Indicator PRACH Physical Random Access Channel PSS Primary Synchronization Signal PUCCH Physical Uplink Control Channel PUSCH Physical Uplink Shared Channel P-MPR Power Management-Maximum Power Reduction RACH Random Access Channel (or procedure) RAR Random Access Response RB resource block RF Wireless Frontend RLF Wireless Link Failure RLM Wireless Link Monitoring RNTI (Radio Network Identifier) RRC (Radio Resource Control) RRM Wireless Resource Management RS reference signal RSRP Reference Signal Received Power RSSI Received Signal Strength Indicator SB sub-band / subband SDU Service Data Unit SI self-interference SINR (Signal-to-Noise Ratio) SL Side link SRI SRS Resource Indicator SRS Sounding Reference Signal SS synchronization signal SSB Synchronization Signal Block SSS secondary synchronization signal SPS Semi-Persistent Scheduling SUL Auxiliary Uplink TB transport block TBS Transport Block Size TCI Transmit Configuration Indicator TDD time division duplex TRP Send / Receive Point UCI Uplink Control Information UE User Unit (WTRU) UL Uplink URLLC: Ultra-high reliability and low latency communication WLAN (Wireless Local Area Network) and related technologies (IEEE 802.xx domain) WTRU Wireless Transceiver Unit (See UE) XDD Cross-split duplex

[0008] Exemplary communication system

[0009] The methods, apparatus, and systems provided herein are suitable for communications involving both wired and wireless networks. Outlines of various types of wireless devices and infrastructure are provided with respect to Figures 1A to 1D, and various elements of a network may utilize, operate, be arranged according to, and / or adapt and / or configure for the methods, apparatus, and systems provided herein.

[0010] Figure 1A is a system diagram showing an exemplary communication system 100 in which one or more disclosed embodiments may be implemented. The communication system 100 may be a multi-access system that provides content such as voice, data, video, messaging, and broadcast to multiple wireless users. The communication system 100 may enable multiple wireless users to access such content through the sharing of system resources, including wireless bandwidth. For example, the communication system 100 may use one or more channel access methods, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), single-carrier FDMA (SC-FDMA), zero-tail (ZT) unique word (UW) discrete Fourier transform (DFT) spread OFDM (ZT UW DFT-s OFDM), unique word OFDM (UW-OFDM), resource block filtered OFDM, and filter bank multicarrier (FBMC).

[0011] As shown in Figure 1A, the communication system 100 may include wireless transceiver units (WTRUs) 102a, 102b, 102c, 102d, radio access networks (RANs) 104 / 113, core networks (CNs) 106 / 115, public switched telephone networks (PSTNs) 108, the Internet 110, and other networks 112, but it will be understood that the disclosed embodiments conspiracy to include any number of WTRUs, base stations, networks, and / or network elements. Each of the WTRUs 102a, 102b, 102c, and 102d may be any type of device configured to operate and / or communicate in a wireless environment. For example, WTRU102a, 102b, 102c, and 102d may all be referred to as “stations” and / or “STAs” and may be configured to transmit and / or receive wireless signals, and may include (or may include) user equipment (UEs), mobile stations, fixed or mobile subscriber units, subscriber-based units, pagers, mobile phones, personal digital assistants (PDAs), smartphones, laptops, netbooks, personal computers, wireless sensors, hotspots or Mi-Fi devices, Internet of Things (IoT) devices, watches or other wearables, head-mounted displays (HMDs), vehicles, drones, medical devices and applications (e.g., remote surgery), industrial devices and applications (e.g., robots and / or other wireless devices operating in the context of industrial and / or automated processing chains), consumer electronics, and devices operating on commercial and / or industrial wireless networks. Any of WTRU102a, 102b, 102c, and 102d may interchangeably be referred to as UEs.

[0012] The communication system 100 may also include base stations 114a and / or base stations 114b. Each of the base stations 114a and 114b may be any type of device configured to wirelessly interface with at least one of the WTRUs 102a, 102b, 102c, and 102d to facilitate access to one or more communication networks, such as CN 106 / 115, the Internet 110, and / or network 112. For example, base stations 114a and 114b may be any of the following: base transceiver base station (BTS), node B (NB), e-node B (eNB), home node B (HNB), home e-node B (HeNB), g-node B (gNB), NR node B (NR NB), site controller, access point (AP), wireless router, etc. Although base stations 114a and 114b are shown as single elements, it should be understood that base stations 114a and 114b may include any number of interconnected base stations and / or network elements.

[0013] Base station 114a may be part of RAN 104 / 113, which may also include other base stations and / or network elements (not shown), such as a base station controller (BSC), a radio network controller (RNC), and relay nodes. Base station 114a and / or base station 114b may be configured to transmit and / or receive wireless signals on one or more carrier frequencies, which may be called cells (not shown). These frequencies may be in the licensed spectrum, the unlicensed spectrum, or a combination of the licensed and unlicensed spectrum. A cell may provide coverage for wireless service to a particular geographic area, which may be relatively fixed or change over time. A cell may be further divided into cell sectors. For example, a cell associated with base station 114a may be divided into three sectors. Thus, in one embodiment, base station 114a may include three transceivers, i.e., one for each sector of the cell. In one embodiment, base station 114a may use multiple-input multiple-output (MIMO) technology, and multiple transceivers may be available for each sector of the cell or any sector. For example, beamforming can be used to transmit and / or receive signals in a desired spatial direction.

[0014] Base stations 114a and 114b may communicate with one or more WTRUs 102a, 102b, 102c, and 102d via an air interface 116, the air interface 116 may be any suitable wireless communication link (e.g., radio frequency (RF), microwave, centimeter wave, micrometer wave, infrared (IR), ultraviolet (UV), visible light, etc.). The air interface 116 may be established using any suitable radio access technology (RAT).

[0015] More specifically, as described above, the communication system 100 may be a multi-access system and may further use one or more channel access schemes such as CDMA, TDMA, FDMA, OFDMA, and SC-FDMA. For example, base stations 114a and WTRUs 102a, 102b, and 102c in RAN 104 / 113 may implement radio technologies such as Universal Mobile Communications System (UMTS) Terrestrial Radio Access (UTRA) that can establish an air interface 116 using broadband CDMA (WCDMA). WCDMA may include communication protocols such as High Speed ​​Packet Access (HSPA) and / or Advanced HSPA (HSPA+). HSPA may include High Speed ​​Downlink Packet Access (HSDPA) and / or High Speed ​​Uplink Packet Access (HSUPA).

[0016] In one embodiment, base stations 114a and WTRUs 102a, 102b, 102c may implement radio technologies such as evolved UMTS terrestrial radio access (E-UTRA) that can establish an air interface 116 using Long-Term Evolution (LTE) and / or LTE-Advanced (LTE-A) and / or LTE-Advanced Pro (LTE-A Pro).

[0017] In one embodiment, base stations 114a and WTRUs 102a, 102b, and 102c may implement radio technologies such as NR radio access, which can establish an air interface 116 using New Radio (NR).

[0018] In one embodiment, base station 114a and WTRUs 102a, 102b, 102c may implement multiple radio access technologies. For example, base station 114a and WTRUs 102a, 102b, 102c may implement LTE radio access and NR radio access together, for example, using the dual connectivity (DC) principle. Thus, the air interface utilized by WTRUs 102a, 102b, 102c may be characterized by multiple types of radio access technologies and / or transmissions sent to and from multiple types of base stations (e.g., eNB and gNB).

[0019] In one embodiment, base stations 114a and WTRUs 102a, 102b, and 102c may implement wireless technologies such as IEEE 802.11 (i.e., Wireless Fidelity (Wi-Fi)), IEEE 802.16 (i.e., Worldwide Interoperability for Microwave Access (WiMAX)), CDMA2000, CDMA2000 1X, CDMA2000EV-DO, Interlim Standard 2000 (IS-2000), Interlim Standard 95 (IS-95), Interlim Standard 856 (IS-856), Global System for Mobile Communications (GSM), Enhanced Data Rate for GSM Evolution (EDGE), and GSM EDGE (GERAN).

[0020] The base station 114b in Figure 1A may be, for example, a wireless router, home node B, home e-node B, or access point, and may utilize any suitable RAT to facilitate wireless connectivity in localized areas such as businesses, homes, vehicles, campuses, industrial facilities, air corridors (for use by drones), and roads. In one embodiment, base stations 114b and WTRUs 102c, 102d may establish a wireless local area network (WLAN) by implementing a radio technology such as IEEE 802.11. In one embodiment, base stations 114b and WTRUs 102c, 102d may establish a wireless personal area network (WPAN) by implementing a radio technology such as IEEE 802.15. In one embodiment, base stations 114b and WTRUs 102c, 102d may establish a small cell, picocell, or femtocell by utilizing a cellular-based RAT (e.g., WCDMA, CDMA2000, GSM, LTE, LTE-A, LTE-A Pro, NR, etc.). As shown in Figure 1A, base station 114b may have a direct connection to the internet 110. Therefore, base station 114b may not need to access the internet 110 via CN 106 / 115.

[0021] RAN104 / 113 may communicate with CN106 / 115, which may be any type of network configured to provide voice, data, applications, and / or Voice over Internet Protocol (VoIP) services to one or more of WTRU102a, 102b, 102c, and 102d. The data may have various Quality of Service (QoS) requirements, such as different throughput requirements, latency requirements, error tolerance requirements, reliability requirements, data throughput requirements, and mobility requirements. CN106 / 115 may provide call control, billing services, mobile location-based services, prepaid calls, internet connectivity, video distribution, etc., and / or perform high-level security functions such as user authentication. Although not shown in Figure 1A, it should be understood that RAN104 / 113 and / or CN106 / 115 may communicate directly or indirectly with other RANs using the same RAT or a different RAT as RAN104 / 113. For example, in addition to connecting to RAN104 / 113, which may utilize NR radio technology, CN106 / 115 may also communicate with another RAN (not shown) using one of the following technologies: GSM, UMTS, CDMA2000, WiMAX, E-UTRA, or Wi-Fi radio technology.

[0022] CN106 / 115 may also function as a gateway for WTRU102a, 102b, 102c, and 102d to access PSTN108, the Internet 110, and / or other networks 112. PSTN108 may include a circuit-switched telephone network providing conventional telephone services (POTS). The Internet 110 may include a global system of interconnected computer networks and devices using common communication protocols such as TCP (Transmit Control Protocol), UDP (User Datagram Protocol), and / or IP (Internet Protocol) in the TCP / IP Internet Protocol suite. Network 112 may include wired and / or wireless communication networks owned and / or operated by other service providers. For example, network 112 may include another CN connected to one or more RANs that may use the same RAT as RAN104 / 114 or a different RAT.

[0023] Some or all of the WTRUs 102a, 102b, 102c, and 102d in the communication system 100 may include multimode functionality (for example, WTRUs 102a, 102b, 102c, and 102d may include multiple transceivers for communicating with different wireless networks via different wireless links). For example, WTRU 102c shown in Figure 1A may be configured to communicate with base station 114a, which may use cellular-based radio technology, and base station 114b, which may use IEEE 802 radio technology.

[0024] Figure 1B is a system diagram showing an exemplary WTRU 102. As shown in Figure 1B, the WTRU 102 may include, in particular, a processor 118, a transceiver 120, a transmit / receive element 122, a speaker / microphone 124, a keypad 126, a display / touchpad 128, non-removable memory 130, removable memory 132, a power supply 134, a Global Positioning System (GPS) chipset 136, and / or other elements / peripherals 138. It will be understood that the WTRU 102 may include any partial combination of the aforementioned elements, while remaining consistent with the embodiment.

[0025] The processor 118 may be a general-purpose processor, a dedicated processor, a conventional processor, a digital signal processor (DSP), multiple microprocessors, one or more microprocessors associated with a DSP core, a controller, a microcontroller, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) circuit, any other type of integrated circuit (IC), a state machine, etc. The processor 118 may perform signal coding, data processing, power control, input / output processing, and / or any other functions that enable the WTRU 102 to operate in a wireless environment. The processor 118 may be coupled to a transceiver 120, which may be coupled to a transmit / receive element 122. Although Figure 1B shows the processor 118 and transceiver 120 as separate components, it will be understood that the processor 118 and transceiver 120 may be integrated together, for example, in an electronic package or chip.

[0026] The transmitting / receiving element 122 may be configured to transmit signals to or receive signals from a base station (e.g., base station 114a) via the air interface 116. For example, in one embodiment, the transmitting / receiving element 122 may be an antenna configured to transmit and / or receive RF signals. In one embodiment, the transmitting / receiving element 122 may be an emitter / detector configured to transmit and / or receive, for example, IR, UV, or visible light signals. In one embodiment, the transmitting / receiving element 122 may be configured to transmit and / or receive both RF signals and optical signals. It will be understood that the transmitting / receiving element 122 may be configured to transmit and / or receive any combination of wireless signals.

[0027] Although the transmit / receive element 122 is shown as a single element in Figure 1B, the WTRU 102 may include any number of transmit / receive elements 122. For example, the WTRU 102 may use MIMO technology. Thus, in one embodiment, the WTRU 102 may include two or more transmit / receive elements 122 (e.g., multiple antennas) for transmitting and receiving wireless signals via the air interface 116.

[0028] The transceiver 120 may be configured to modulate the signal to be transmitted by the transmitting / receiving element 122 and to demodulate the signal received by the transmitting / receiving element 122. As described above, the WTRU 102 may have multimode capabilities. Therefore, the transceiver 120 may include multiple transceivers to enable the WTRU 102 to communicate via multiple RATs, such as NR and IEEE 802.11.

[0029] The processor 118 of the WTRU102 may be coupled to a speaker / microphone 124, a keypad 126, and / or a display / touchpad 128 (e.g., a liquid crystal display (LCD) display unit or an organic light-emitting diode (OLED) display unit) and may receive user input data from them. The processor 118 may also output user data to the speaker / microphone 124, the keypad 126, and / or the display / touchpad 128. In addition, the processor 118 may access information from any type of suitable memory, such as non-removable memory 130 and / or removable memory 132, and store data therein. Non-removable memory 130 may include random access memory (RAM), read-only memory (ROM), a hard disk, or any other type of memory storage device. Removable memory 132 may include a subscriber identification module (SIM) card, a memory stick, a secure digital (SD) memory card, and the like. In other embodiments, the processor 118 may access information from memory not physically located on the WTRU 102, such as on a server or home computer (not shown), and store data in it.

[0030] The processor 118 may receive power from the power supply 134 and may be configured to distribute and / or control power to other components within the WTRU 102. The power supply 134 may be any suitable device for supplying power to the WTRU 102. For example, the power supply 134 may include one or more dry cell batteries (e.g., nickel-cadmium (NiCd), nickel-zinc (NiZn), nickel-metal hydride (NiMH), lithium-ion (Li-ion), etc.), a solar cell, a fuel cell, etc.

[0031] The processor 118 may also be coupled to a GPS chipset 136, which may be configured to provide location information (e.g., longitude and latitude) regarding the current location of the WTRU 102. In addition to, or instead of, the WTRU 102 may receive location information from base stations (e.g., base stations 114a, 114b) via the air interface 116 and / or determine its location based on the timing of signals received from two or more nearby base stations. It will be understood that the WTRU 102 may acquire location information by any suitable location determination method while maintaining consistency with the embodiment.

[0032] The processor 118 may be further coupled to other elements / peripherals 138, which may include one or more software and / or hardware modules / units that provide additional features, functions, and / or wired or wireless connectivity. For example, elements / peripherals 138 may include an accelerometer, an electronic compass, a satellite transceiver, a digital camera (e.g., for photos and / or videos), a Universal Serial Bus (USB) port, a vibration device, a television transceiver, a hands-free headset, a Bluetooth® module, a frequency modulation (FM) radio unit, a digital music player, a media player, a video game player module, an internet browser, a virtual reality and / or augmented reality (VR / AR) device, an activity tracker, and the like. The element / peripheral device 138 may include one or more sensors, one or more of which are gyroscopes, accelerometers, Hall effect sensors, magnetometers, compass sensors, proximity sensors, temperature sensors, time sensors, geolocation sensors, altimeters, light sensors, touch sensors, magnetometers, barometers, gesture sensors, biosensors, and / or humidity sensors.

[0033] WTRU102 may include a full-duplex radio in which the transmission and reception of some or all of the signals associated with a particular subframe for both uplink (e.g., for transmission) and downlink (e.g., for reception) may be parallel and / or simultaneous. The full-duplex radio may include an interference management unit for reducing and / or substantially eliminating self-interference, either through hardware (e.g., chokes) or signal processing via a processor (e.g., a separate processor (not shown) or processor 118). In one embodiment, WTRU102 may include a half-duplex radio in which the transmission and reception of some or all of the signals associated with a particular subframe for either uplink (e.g., for transmission) or downlink (e.g., for reception) is parallel and / or simultaneous.

[0034] Figure 1C is a system diagram showing RAN104 and CN106 according to one embodiment. As described above, RAN104 can communicate with WTRU102a, 102b, and 102c via the air interface 116 using E-UTRA radio technology. RAN104 may also communicate with CN106.

[0035] RAN104 may include e-nodes B160a, 160b, and 160c, but it will be understood that RAN104 may include any number of e-nodes B while remaining consistent with one embodiment. Each of e-nodes B160a, 160b, and 160c may include one or more transceivers for communicating with WTRU102a, 102b, and 102c via the air interface 116. In one embodiment, e-nodes B160a, 160b, and 160c may implement MIMO technology. Thus, e-node B160a may, for example, use multiple antennas to transmit wireless signals to and receive wireless signals from WTRU102a.

[0036] Each of the e-nodes B160a, 160b, and 160c may be associated with a specific cell (not shown) and may be configured to handle wireless resource management decisions, handover decisions, user scheduling on uplink (UL) and / or downlink (DL), etc. As shown in Figure 1C, the e-nodes B160a, 160b, and 160c may communicate with each other via the X2 interface.

[0037] The CN106 shown in Figure 1C may include a Mobility Management Entity (MME) 162, a Serving Gateway (SGW) 164, and a Packet Data Network (PDN) Gateway (PGW) 166. Although each of the above elements is shown as part of CN106, it should be understood that any one of these elements may be owned and / or operated by an entity other than the CN operator.

[0038] The MME162 may be connected to each of the e-nodes B160a, 160b, and 160c within RAN104 via the S1 interface and may function as a control node. For example, the MME162 may be responsible for authenticating users of WTRU102a, 102b, and 102c, bearer activation / deactivation, and selecting a specific serving gateway during the initial attachment of WTRU102a, 102b, and 102c. The MME162 may provide control plane functionality for switching between RAN104 and other RANs (not shown) using other radio technologies such as GSM and / or WCDMA.

[0039] The SGW164 can be connected to each of the e-nodes B160a, 160b, and 160c in RAN104 via the S1 interface. The SGW164 can generally route and forward user data packets to and from WTRU102a, 102b, and 102c. The SGW164 can perform other functions, such as anchoring the user plane during e-node B handovers, triggering paging when DL data is available to WTRU102a, 102b, and 102c, and managing and remembering the context of WTRU102a, 102b, and 102c.

[0040] SGW164 may be connected to PGW166, which can provide WTRU102a, 102b, and 102c with access to packet-switched networks such as Internet 110, thereby facilitating communication between WTRU102a, 102b, and 102c and IP-enabled devices.

[0041] CN106 can facilitate communication with other networks. For example, CN106 can provide WTRU102a, 102b, and 102c with access to circuit-switched networks such as PSTN108, thereby facilitating communication between WTRU102a, 102b, and 102c and conventional land-line communication devices. For example, CN106 may include, or communicate with, an IP gateway (e.g., an IP Multimedia Subsystem (IMS) server) that acts as an interface between CN106 and PSTN108. In addition, CN106 may provide WTRU102a, 102b, and 102c with access to other networks 112, which may include other wired and / or wireless networks owned and / or operated by other service providers.

[0042] Although the WTRU is described as a wireless terminal in Figures 1A to 1D, in some representative embodiments, such a terminal is intended to be able to use a wired communication interface with a communication network (e.g., temporarily or permanently).

[0043] In a typical embodiment, the other network 112 may be a WLAN.

[0044] In Infrastructure Basic Service Set (BSS) mode, a WLAN may have access points (APs) for the BSS and one or more stations (STAs) associated with the APs. APs may have access to or interfaces with a distribution system (DS) or another type of wired / wireless network that carries traffic in and / or out of the BSS. Traffic originating from outside the BSS to an STA may arrive via an AP and be delivered to the STA. Traffic originating from an STA to a destination outside the BSS may be sent to an AP to be delivered to its respective destination. Traffic between STAs within the BSS may be sent through an AP; for example, a source STA may send traffic to an AP, which may deliver the traffic to the destination STA. Traffic between STAs within the BSS is considered and / or sometimes referred to as peer-to-peer traffic. Peer-to-peer traffic may be sent between a source STA and a destination STA (e.g., directly between them) using a Direct Link Setup (DLS). In some typical embodiments, the DLS may be an 802.11e DLS or an 802.11z Tunnel DLS (TDLS). A WLAN using Independent BSS (IBSS) mode may not have access points (APs), and STAs within or using IBSS (e.g., all STAs) can communicate directly with each other. The IBSS communication mode is sometimes referred to as the “ad-hoc” communication mode in this specification.

[0045] When using the 802.11ac infrastructure operating mode or a similar operating mode, an AP may transmit beacons on a fixed channel, such as the primary channel. The primary channel may be of a fixed width (e.g., a 20 MHz bandwidth) or a width dynamically set via signaling. The primary channel may also be the operating channel of the BSS, and may be used by an STA to establish a connection with the AP. In some typical embodiments, carrier sensing multiple access / collision avoidance (CSMA / CA) may be implemented in an 802.11 system, for example. In the case of CSMA / CA, an STA, including the AP (e.g., any STA), may sense the primary channel. If the primary channel is sensed / detected and / or determined to be busy by a particular STA, that STA may backoff. A single STA (e.g., only one station) may transmit at any given time on a given BSS.

[0046] A high-throughput (HT) STA may use a 40 MHz wide channel for communication, for example, by combining a primary 20 MHz channel with adjacent or non-adjacent 20 MHz channels to form a 40 MHz wide channel.

[0047] Ultra-high throughput (VHT) STAs may support channels with widths of 20 MHz, 40 MHz, 80 MHz, and / or 160 MHz. 40 MHz and / or 80 MHz channels may be formed by combining consecutive 20 MHz channels. 160 MHz channels may be formed by combining eight consecutive 20 MHz channels, or by combining two discontinuous 80 MHz channels, sometimes referred to as an 80+80 configuration. In the 80+80 configuration, data may pass through a segment parser that, after channel coding, can split the data into two streams. Inverse fast Fourier transform (IFFT) processing and time-domain processing may be performed separately for each stream. The streams may be mapped onto two 80 MHz channels, and the data may be transmitted by a transmitting STA. At the receiver of a receiving STA, the operation described above for the 80+80 configuration may be reversed, and the combined data may be sent to a media access control (MAC) layer, entities, etc.

[0048] Sub-1GHz operating modes are supported by 802.11af and 802.11ah. Channel operating bandwidth and carrier are reduced in 802.11af and 802.11ah compared to those used in 802.11n and 802.11ac. 802.11af supports 5MHz, 10MHz, and 20MHz bandwidths in the TV white space (TVWS) spectrum, while 802.11ah supports 1MHz, 2MHz, 4MHz, 8MHz, and 16MHz bandwidths using the non-TVWS spectrum. According to a typical embodiment, 802.11ah may support meter-type control / machine-type communications (MTC), such as MTC devices in a macro coverage area. MTC devices may have limited functionality, including support for some and / or limited bandwidths (e.g., support only for that). MTC devices may include batteries with battery life above a threshold (e.g., to maintain very long battery life).

[0049] WLAN systems that can support multiple channels and channel bandwidths, such as 802.11n, 802.11ac, 802.11af, and 802.11ah, include a channel that can be designated as the primary channel. The primary channel may have a bandwidth equal to the maximum common operating bandwidth supported by all STAs within the BSS. The bandwidth of the primary channel may be set and / or limited by the STA that supports the minimum bandwidth operating mode from among all STAs operating within the BSS. In the 802.11ah example, even if the APs and other STAs in the BSS support 2MHz, 4MHz, 8MHz, 16MHz, and / or other channel bandwidth operating modes, the primary channel may be 1MHz wide for an STA (e.g., an MTC type device) that supports (e.g., only) 1MHz mode. Carrier detection and / or network allocation vector (NAV) settings may depend on the status of the primary channel. For example, if the primary channel is busy because an STA (which only supports 1MHz operating mode) is transmitting to the AP, the entire available frequency band may be considered busy, even though a large portion of the frequency band remains idle and could potentially be available.

[0050] In the United States, the available frequency band that can be used by 802.11ah is from 902 MHz to 928 MHz. In South Korea, the available frequency band is from 917.5 MHz to 923.5 MHz. In Japan, the available frequency band is from 916.5 MHz to 927.5 MHz. The total bandwidth available for 802.11ah is from 6 MHz to 26 MHz, depending on the country code.

[0051] Figure 1D is a system diagram showing RAN113 and CN115 according to one embodiment. As described above, RAN113 can communicate with WTRU102a, 102b, and 102c via air interface 116 using NR radio technology. RAN113 may also communicate with CN115.

[0052] RAN113 may include gNB180a, 180b, and 180c, but it will be understood that RAN113 may include any number of gNBs while remaining consistent with one embodiment. Each of gNB180a, 180b, and 180c may include one or more transceivers for communicating with WTRU102a, 102b, and 102c via the air interface 116. In one embodiment, gNB180a, 180b, and 180c may implement MIMO technology. For example, gNB180a and 180b may use beamforming to transmit signals to and / or receive signals from WTRU102a, 102b, and 102c. Thus, gNB180a may, for example, use multiple antennas to transmit wireless signals to and / or receive wireless signals from WTRU102a. In one embodiment, gNB180a, 180b, and 180c may implement carrier aggregation technology. For example, gNB180a may transmit multiple component carriers to WTRU102a (not shown). A subset of these component carriers may be on the unlicensed spectrum, while the remaining component carriers may be on the licensed spectrum. In one embodiment, gNB180a, 180b, and 180c may implement coordinated multipoint (CoMP) technology. For example, WTRU102a may receive coordinated transmissions from gNB180a and gNB180b (and / or gNB180c).

[0053] WTRU102a, 102b, and 102c may communicate with gNB180a, 180b, and 180c using transmissions associated with scalable numerology. For example, OFDM symbol intervals and / or OFDM subcarrier intervals may vary for different transmissions, different cells, and / or different parts of the wireless transmission spectrum. WTRU102a, 102b, and 102c may communicate with gNB180a, 180b, and 180c using subframes or transmit time intervals (TTIs) of varying or scalable lengths (including, for example, a variable number of OFDM symbols and / or a variable-length absolute time duration).

[0054] gNB180a, 180b, and 180c can be configured to communicate with WTRU102a, 102b, and 102c in standalone and / or non-standalone configurations. In a standalone configuration, WTRU102a, 102b, and 102c can communicate with gNB180a, 180b, and 180c without accessing other RANs (e.g., e-nodes B160a, 160b, and 160c). In a standalone configuration, WTRU102a, 102b, and 102c can use one or more of gNB180a, 180b, and 180c as mobility anchor points. In a standalone configuration, WTRU102a, 102b, and 102c can communicate with gNB180a, 180b, and 180c using signals in the unlicensed band. In a non-standalone configuration, WTRU102a, 102b, and 102c may communicate with gNB180a, 180b, and 180c while communicating with other RANs such as enodes B160a, 160b, and 160c. For example, WTRU102a, 102b, and 102c may implement DC principles to communicate substantially simultaneously with one or more gNB180a, 180b, and 180c and one or more enodes B160a, 160b, and 160c. In a non-standalone configuration, enodes B160a, 160b, and 160c may function as mobility anchors for WTRU102a, 102b, and 102c, and gNB180a, 180b, and 180c may provide additional coverage and / or throughput to service WTRU102a, 102b, and 102c.

[0055] Each of the gNB180a, 180b, and 180c may be associated with a specific cell (not shown) and may be configured to handle radio resource management decisions, handover decisions, user scheduling in UL and / or DL, support for network slicing, dual connectivity, interworking between NR and E-UTRA, routing of user plane data to user plane functions (UPF) 184a and 184b, routing of control plane information to access and mobility management functions (AMF) 182a and 182b, etc. As shown in Figure 1D, the gNB180a, 180b, and 180c may communicate with each other via the Xn interface.

[0056] The CN115 shown in Figure 1D may include at least one AMF182a, 182b, at least one UPF184a, 184b, at least one Session Management Function (SMF)183a, 183b, and at least one Data Network (DN)185a, 185b. Although each of the above elements is shown as part of CN115, it should be understood that any of these elements may be owned and / or operated by an entity other than the CN operator.

[0057] AMF182a and 182b may be connected to one or more of gNB180a, 180b, and 180c within RAN113 via the N2 interface and may function as control nodes. For example, AMF182a and 182b may be responsible for authenticating users of WTRU102a, 102b, and 102c, supporting network slicing (e.g., processing different protocol data unit (PDU) sessions with different requirements), selecting specific SMF183a and 183b, managing registration areas, terminating NAS signaling, and mobility management. Network slicing may be used by AMF182a and 182b to customize CN support for WTRU102a, 102b, and 102c based on the type of service being utilized by WTRU102a, 102b, and 102c. For example, different network slices may be established for different use cases, such as services relying on ultra-high reliability low latency (URLLC) access, services relying on extended large-scale mobile broadband (eMBB) access, and services for MTC access. The AMF162 may provide control plane functionality for switching between RAN113 and other RANs (not shown) using other radio technologies such as LTE, LTE-A, LTE-A Pro, and / or non-3GPP access technologies such as Wi-Fi.

[0058] SMF183a and 183b can be connected to AMF182a and 182b in CN115 via the N11 interface. SMF183a and 183b can also be connected to UPF184a and 184b in CN115 via the N4 interface. SMF183a and 183b can select and control UPF184a and 184b and configure the routing of traffic through UPF184a and 184b. SMF183a and 183b can perform other functions such as managing and allocating UE IP addresses, managing PDU sessions, controlling policy enforcement and QoS, and providing downlink data notifications. PDU session types can be IP-based, non-IP-based, Ethernet-based, etc.

[0059] UPF184a, 184b may be connected to one or more of gNB180a, 180b, 180c in RAN113 via an N3 interface, which may provide WTRU102a, 102b, 102c with access to a packet-switched network such as the Internet 110 to facilitate communication between WTRU102a, 102b, 102c and IP-enabled devices. UPF184, 184b may perform other functions such as packet routing and forwarding, enforcement of user plane policies, support for multi-homed PDU sessions, processing of user plane QoS, buffering of downlink packets, and providing mobility anchoring.

[0060] CN115 can facilitate communication with other networks. For example, CN115 may include, or can communicate with, an IP gateway (e.g., an IP Multimedia Subsystem (IMS) server) that acts as an interface between CN115 and PSTN108. In addition, CN115 may provide WTRU102a, 102b, 102c with access to other networks 112, which may include other wired and / or wireless networks owned and / or operated by other service providers. In one embodiment, WTRU102a, 102b, 102c may be connected to DN185a, 185b through UPF184a, 184b via an N3 interface to UPF184a, 184b, and an N6 interface between UPF184a, 184b and local data networks (DNs) 185a, 185b.

[0061] Considering Figures 1A to 1D and their corresponding descriptions, one or more or all of the functions described herein with respect to WTRU 102a to d, base stations 114a to 1b, e-nodes B160a to 1c, MME 162, SGW 164, PGW 166, gNB 180a to 1c, AMF 182a to 1b, UPF 184a to 1b, SMF 183a to 1b, DN 185a to 1b, and / or any other elements / devices described herein may be performed by one or more emulation elements / devices (not shown). The emulation devices may be one or more devices configured to reproduce one or more or all of the functions described herein. For example, emulation devices may be used to test other devices and / or simulate network and / or WTRU functions.

[0062] Emulation devices may be designed to perform one or more tests on other devices in a laboratory and / or operator network environment. For example, one or more emulation devices may perform one or more, or all, functions while being fully or partially implemented and / or deployed as part of a wired and / or wireless communication network to test other devices in a communication network. One or more emulation devices may perform one or more, or all, functions while being temporarily implemented / deployed as part of a wired and / or wireless communication network. Emulation devices may be directly coupled to another device for testing purposes and / or perform tests using over-the-air (OTA) wireless communication.

[0063] One or more emulation devices may perform one or more functions, including all of the above, while not implemented / deployed as part of a wired and / or wireless communication network. For example, an emulation device may be used in a test scenario in a test chamber and / or undeployed (e.g., test) wired and / or wireless communication network to implement testing of one or more components. One or more emulation devices may also be test equipment. Wireless communication via direct RF coupling and / or RF circuitry (e.g., including one or more antennas) may be used by the emulation device to transmit and / or receive data.

[0064] Hereafter, “a” and “an” and similar phrases should be interpreted as “one or more” and “at least one” respectively. Similarly, any term ending in the suffix “(s)” should be interpreted as “one or more” and “at least one” respectively. The term “may do” should be interpreted as “for example, may do.”

[0065] The symbol " / " (e.g., a slash) may be used herein to represent "and / or," for example, "A / B" may mean "A and / or B."

[0066] Subband

[0067] Hereinafter, the term “subband” is used to refer to frequency domain resources, which may be characterized by at least one of the following: a set of resource blocks (RBs), e.g., a set of resource block sets (RB sets) when a carrier has an intra-cell guard band, a set of interlaced resource blocks, a bandwidth portion or part thereof, a carrier, or part thereof.

[0068] For example, a subband may be characterized by the starting RB and the number of RBs for a set of consecutive RBs within a bandwidth portion. A subband may also be defined by the value of the frequency domain resource allocation field and the bandwidth portion index.

[0069] XDD

[0070] Hereinafter, the term "XDD" is used to refer to subband-level duplexing (e.g., either UL or DL ​​is used per subband), which may be characterized by at least one of the following: cross-division duplexing (e.g., subband-level FDD within the TDD bandwidth), subband-based full-duplex (e.g., both UL and DL are used / mixed on the symbol / slot, but either UL or DL ​​is used per subband on the symbol / slot, thus full-duplex), frequency-domain multiplexing (FDM) of DL / UL transmissions within the TDD spectrum, subband-non-overlapping full-duplex (SBFD) (e.g., non-overlapping subband full-duplex), full-duplex on non-same frequencies (e.g., spectrum sharing, subband-level overlap) full-duplex, e.g., advanced duplexing methods other than (pure) TDD or FDD.

[0071] Dynamic / Flexible TDD

[0072] Hereinafter, the term “dynamic / flexible TDD” is used to refer to a TDD system / cell that can dynamically (and / or flexibly) change / adjust / switch the direction of communication (e.g., downlink, uplink, or sidelink) over a time instance (e.g., slot, symbol, subframe, etc.). For example, in a system employing dynamic / flexible TDD, a component carrier (CC) or bandwidth portion (BWP) may have a single type on a symbol / slot, one of “D”, “U”, and “F”, based on representation by Group Common (GC)-DCI (e.g., Format 2_0) with a Slot Format Indicator (SFI), and / or based on a tdd-UL-DL-config-common / dedicated configuration. On a given time instance / slot / symbol, a first gNB (e.g., a cell, TRP) using dynamic / flexible TDD may transmit downlink signals to a first WTRU communicating with / associated with the first gNB, based on a first SFI and / or tdd-UL-DL-config configured / indicated by the first gNB, and a second gNB (e.g., a cell, TRP) using dynamic / flexible TDD may receive uplink signals transmitted from a second WTRU communicating with / associated with the second gNB, based on a second SFI and / or tdd-UL-DL-config configured / indicated by the second gNB. In one example, the first WTRU may determine that the reception of downlink signals is being interfered with by uplink signals, and the interference caused by uplink signals may refer to inter-WTRU cross-layer interference (CLI).

[0073] definition of a beam

[0074] A WTRU may transmit or receive a physical channel or reference signal according to at least one spatial domain filter. The term "beam" may be used to refer to a spatial domain filter.

[0075] A WTRU may transmit a physical channel or signal using the same spatial domain filter used to receive an RS (such as CSI-RS) or SS block. A WTRU transmission may be referred to as a “target,” and the received RS or SS block may be referred to as a “reference” or “source.” In such cases, the WTRU may be said to transmit a target physical channel or signal according to its spatial relationship to the reference to such an RS or SS block.

[0076] A WTRU may transmit a first physical channel or signal according to the same spatial domain filter used to transmit a second physical channel or signal. The first and second transmissions may be referred to as the “target” and “reference” (or “source”), respectively. In such cases, the WTRU may be said to transmit the first (target) physical channel or signal according to its spatial relationship with the reference to the second (reference) physical channel or signal.

[0077] Spatial relationships can be implicit, configured by RRC, or signaled by MAC CE or DCI. For example, a WTRU may implicitly transmit PUSCH and its DM-RS according to the same spatial domain filter as the SRS indicated by an SRS resource indicator (SRI) indicated by DCI or configured by RRC. In another example, a spatial relationship may be signaled by RRC for the SRI or by MAC CE for PUCCH. Such spatial relationships are sometimes called "beam indications."

[0078] A WTRU may receive a first (target) downlink channel or signal according to the same spatial domain filter or spatial receive parameters as the second (reference) downlink channel or signal. For example, such an association may exist between a physical channel such as a PDCCH or PDSCH and its respective DM-RS. Such an association may exist when the WTRU is configured with a pseudo-collocation (QCL) assumption type D between corresponding antenna ports, provided that at least the first and second signals are reference signals. Such an association may be configured as a transmit configuration indicator (TCI) state. A WTRU may be indicated by an association between a CSI-RS or SS block and a DM-RS, by indexing to a set of TCI states configured by the RRC and / or signaled by the MAC CE. Such an indication is sometimes called a "beam indication".

[0079] Integrated TCI (UTCI)

[0080] An integrated TCI (e.g., common TCI, common beam, common RS, etc.) may refer to a beam / RS that should be used (simultaneously) for multiple physical channels / signals. The term "TCI" may include at least a TCI state that includes at least one source RS to provide a reference (e.g., WTRU assumption) for determining the QCL and / or spatial filter.

[0081] In one example, the WTRU may receive (e.g., from a gNB) a representation of a first integrated TCI to be used / applied to both the downlink control channel (PDCCH) and the downlink shared channel (PDSCH) (e.g., and downlink RS). The source reference signal in the first integrated TCI may provide common QCL information for WTRU-only reception on at least all (or subsets) of the PDSCH and CORESET in the CC. In one example, the WTRU may receive (e.g., from a gNB) a representation of a second integrated TCI to be used / applied to both the uplink control channel (PUCCH) and the uplink shared channel (PUSCH) (e.g., and uplink RS). The source reference signal in the second integrated TCI may provide a reference for determining a common UL TX spatial filter for at least the dynamic grant / configuration grant-based PUSCH and all dedicated PUCCH resources (or subsets thereof) in the CC.

[0082] The WTRU may consist of a first mode for the integrated TCI (e.g., SeparateDLULTCI mode), which may be applicable to either the downlink (e.g., based on the first integrated TCI) or the uplink (e.g., based on the second integrated TCI).

[0083] For example, a WTRU may receive (e.g., from a gNB) a second integrated TCI designation that should be used / applied in common to PDCCH, PDSCH, PUCCH, and PUSCH (as well as DL RS and / or UL RS).

[0084] The WTRU may consist of a second mode for the integrated TCI (e.g., a joint TCI mode), where the indicated integrated TCI (e.g., a third integrated TCI) may be applicable to both downlink and uplink (e.g., based on the third integrated TCI).

[0085] The WTRU may determine the TCI states applicable to the transmit or receive by first determining the integrated TCI state instance applicable to the transmit or receive, and then determining the TCI states corresponding to the integrated TCI state instance. A transmit may consist of at least PUCCH, PUSCH, and SRS. A receive may consist of at least PDCCH, PDSCH, and CSI-RS. An integrated TCI state instance may also be called a TCI state group, a TCI state process, an integrated TCI pool, a group of TCI states, a set of time-domain instances / stamps / slots / symbols, and / or a set of frequency-domain instances / RBs / subbands, etc. An integrated TCI state instance may be equivalent to, or identified with, coreset pool identification information (e.g., CORESETPoolIndex, TRP indicator, etc.).

[0086] Hereinafter, the integrated TCI may be used interchangeably with one or more of the integrated TCI state, integrated TCI instance, TCI, and TCI state, but still be consistent with the present invention.

[0087] TRP, MTRP, M-TRP

[0088] Hereinafter, a TRP (e.g., transmit / receive point) may be used interchangeably with one or more of TP (transmitting point), RP (receiving point), RRH (radio remote head), DA (distributing antenna), BS (base station), sector (of a BS), and cell (e.g., geographic cell area served by a BS), but may still be consistent with the present invention. Hereinafter, a multi-TRP may be used interchangeably with one or more of MTRP, M-TRP, and multiple TRPs, but may still be consistent with the present invention.

[0089] CSI Components

[0090] A WTRU may report a subset of Channel Status Information (CSI) components, which may include at least the CSI-RS Resource Indicator (CRI), SSB Resource Indicator (SSBRI), panel displays used for reception in the WTRU (such as panel identification information or group identification information), measured values ​​such as L1-RSRP, L1-SINR obtained from SSB or CSI-RS (e.g., cri-RSRP, cri-SINR, ssb-Index-RSRP, ssb-Index-SINR), and other channel status information such as at least the Rank Indicator (RI), Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), and Layer Index (LI).

[0091] Channel and / or interferometry

[0092] Channel and / or Interference Measurement: An SSB WTRU may receive a synchronization signal / physical broadcast channel (SS / PBCH) block. The SS / PBCH block (SSB) may include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH). The WTRU may attempt to monitor, receive, or decode the SSB during initial access, initial synchronization, radio link monitoring (RLM), cell discovery, cell switching, etc.

[0093] Channel and / or Interference Measurement: The CSI-RS WTRU may measure and report Channel State Information (CSI), and the CSI for each connection mode may include, or consist of, one or more of the following:

[0094] a) a1) CSI reporting quantities, e.g., Channel Quality Indicator (CQI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), CSI-RS Resource Indicator (CRI), Layer Indicator (LI), etc.; a2) CSI reporting types, e.g., aperiodic, semi-permanent, periodic; a3) CSI reporting codebook configurations, e.g., Type I, Type II, Type II port selection, etc.; a4) CSI reporting configurations, including one or more of the CSI reporting frequencies.

[0095] b) A CSI-RS resource set that includes one or more of the following CSI resource settings:

[0096] c) NZP-CSI-RS resources for channel measurement.

[0097] d) NZP-CSI-RS resources for interferometry.

[0098] e) CSI-IM resources for interferometry.

[0099] f) NZP CSI-RS resource, including f1) NZP CSI-RS resource ID, f2) periodicity and offset, f3) QCL information and TCI status, and f4) resource mapping, e.g., one or more of the following: number of ports, density, CDM type, etc.

[0100] A WTRU may indicate, determine, or consist of one or more reference signals. Based on each reference signal, the WTRU may monitor, receive, and measure one or more parameters. For example, one or more of the following may apply. The following parameters are non-limiting examples of parameters that may be included in the reference signal measurement. One or more of these parameters may be included. Other parameters may also be included.

[0101] SS-RSRP: SS-RSRP (SS-RSRP) can be measured based on a synchronization signal (e.g., a demodulated reference signal (DMRS) in a PBCH or SSS). It can be defined as a linear average over the power contributions of the resource elements (REs) carrying each synchronization signal. Power scaling for the reference signal may be required when measuring RSRP. If SS-RSRP is used for L1-RSRP, the measurement can be achieved based on a CSI reference signal in addition to the synchronization signal.

[0102] CSI-RSRP: CSI-RSRP can be measured based on a linear average of the power contributions of the resource elements (REs) carrying each CSI-RS. CSI-RSRP measurements can be configured within the measurement resources for the configured CSI-RS occasion.

[0103] SS-SINR: The SS-SINR (Signal-to-Noise and Interference Ratio) can be measured based on a synchronization signal (e.g., DMRS in a PBCH or SSS). It can be defined as a linear average over the power contributions of the resource elements (REs) carrying each synchronization signal, divided by a linear average of the noise and interference power contributions. When SS-SINR is used for L1-SINR, noise and interference power measurements can be achieved based on the resources configured by the upper layers.

[0104] CSI-SINR: CSI-SINR can be measured based on a linear average of the power contributions of the resource elements (REs) carrying each CSI-RS, divided by a linear average of the noise and interference power contributions. When CSI-SINR is used for L1-SINR, noise and interference power measurements can be achieved based on the resources configured by the upper layer. Otherwise, noise and interference power can be measured based on the resources carrying each CSI-RS.

[0105] RSSI: The Received Signal Strength Indicator (RSSI) can be measured based on the average of the total power contributions in the configured OFDM symbol and bandwidth. Power contributions may be received from different resources (e.g., same-channel serving and non-serving cells, adjacent channel interference, thermal noise, etc.).

[0106] CLI-RSSI: The Cross-Layer Interference Received Signal Strength Indicator (CLI-RSSI) can be measured based on the average of the total power contributions in the configured OFDM symbol of the configured time and frequency resources. Power contributions may be received from different resources (e.g., cross-layer interference, same-channel serving and non-serving cells, adjacent channel interference, thermal noise, etc.).

[0107] SRS-RSRP: The sounding reference signal RSRP (SRS-RSRP) can be measured based on a linear average over the power contributions of the resource elements (REs) carrying each SRS.

[0108] Grant or allocation characteristics

[0109] In the following, the characteristics of a grant or allocation may consist of at least one of the following: frequency allocation, time allocation mode such as duration, priority, modulation and coding scheme, transport block size, number of spatial layers, number of transport blocks, TCI state, CRI or SRI, number of repetitions, whether the repetition scheme is type A or type B, whether the grant is a configurable grant type 1, type 2 or dynamic grant, whether the allocation is a dynamic allocation or a semi-persistent scheduling (configurable) allocation, configurable grant index or semi-persistent allocation index, periodicity of the configurable grant or allocation, channel access priority class (CAPC), and any parameters provided in DCI by MAC or RRC for scheduling the grant or allocation.

[0110] In the following, a DCI representation may consist of at least one of the following: an explicit representation by DCI fields or by RNTI used to mask the CRC of a PDCCH; an implicit representation by characteristics such as DCI format, DCI size, core set or search space, aggregation level, or a first resource element of the received DCI (e.g., the index of the first control channel element); and the mapping between characteristics and values ​​may be signaled by RRC or MAC.

[0111] In the following, the signals may be used interchangeably with one or more of the following: sounding reference signals (SRS), channel status information reference signals (CSI-RS), demodulation reference signals (DM-RS), phase tracking reference signals (PT-RS), and synchronization signal blocks (SSB), but may still be consistent with the present disclosure.

[0112] The channels may be used interchangeably with one or more of the following: physical downlink control channels (PDCCH), physical downlink sharing channels (PDSCH), physical uplink control channels (PUCCH), physical uplink sharing channels (PUSCH), physical random access channels (PRACH), etc., but may still be consistent with this disclosure.

[0113] Hereinafter, downlink reception may be used interchangeably with Rx occasion, PDCCH, PDSCH, and SSB reception, but may still be consistent with this disclosure.

[0114] The uplink transmission may be used interchangeably with Tx Occasion, PUCCH, PUSCH, PRACH, and SRS transmissions, but may still be consistent with this disclosure.

[0115] Hereinafter, RS may be used interchangeably with one or more of RS resources, RS resource sets, RS ports, and RS port groups, but still be consistent with this disclosure.

[0116] Hereinafter, RS may be used interchangeably with one or more of SSB, CSI-RS, SRS, and DM-RS, but still be consistent with this disclosure.

[0117] Hereinafter, time instances may be used interchangeably with slots, symbols, and subframes, but still be consistent with this disclosure.

[0118] Hereinafter, UTCI may be used interchangeably with TCI, UTCI state, and TCI state, but still be consistent with this disclosure.

[0119] The following UL-only and DL-only Tx / Rx occasions may be used interchangeably with legacy TDD UL or legacy TDD DL, respectively, and may still be consistent with this disclosure. For example, legacy TDD UL / DL Tx / Rx occasions may be used when SBFD is not configured and / or when SBFD is disabled.

[0120] Hereinafter, the terms received signal power, received signal energy, received signal strength, SSB EPRE, CSI EPRE, RSRP, RSSI, SINR, RSRQ, SS-RSRP, SS-RSSI, SS-SINR, SS-RSRQ, CSI-RSRP, CSI-RSSI, CSI-SINR, and CSI-RSRQ may be used interchangeably but remain consistent with this disclosure.

[0121] Hereinafter, UL signals (e.g., at least one of SRS, DMRS, PUSCH, PUCCH, PRACH, PTRS, etc.) may be used interchangeably with UL signals or channels, or UL channels or signals, but may still be consistent with the present disclosure.

[0122] Hereinafter, DL signals (e.g., at least one of CSI-RS, SSB, PDSCH, PDCCH, PBCH, PTRS, etc.) may be used interchangeably with DL signals or channels, or DL ​​channels or signals, but may still be consistent with the present disclosure.

[0123] Subband non-overlapping full-duplex (SBFD) operation

[0124] A WTRU may consist of one or more types of slots within a bandwidth, the first type of slots may be used or determined for a first direction (e.g., downlink or sidelink (e.g., inter-WTRU communication, inter-device communication)), the second type of slots may be used or determined for a second direction (e.g., uplink or sidelink), and the third type of slots may have a first group of frequency resources within the bandwidth for the first direction and a second group of frequency resources within the bandwidth for the second direction.

[0125] In this specification, bandwidth may be used interchangeably with bandwidth portion (BWP), carrier, subband, and system bandwidth; a first type of slot (e.g., a slot for a first direction) may be called a downlink (and / or sidelink) slot; a second type of slot (e.g., a slot for a second direction) may be called an uplink (and / or sidelink) slot; and a third type of slot may be, for example, DL SB, UL SB, sidelink SB, guardband (or RB), and flexible SB (e.g., DL SB, UL A subband (non-overlapping or overlapping) full-duplex (SBFD) slot may have at least one of the SB (which may be dynamically determined as one of the sidelink SBs), a group of frequency resources for a first direction may be called a downlink (and / or sidelink) subband, downlink (and / or sidelink) frequency resource, or downlink (and / or sidelink) RB, a group of frequency resources for a second direction may be called an uplink (and / or sidelink) subband, uplink (and / or sidelink) frequency resource, or uplink (and / or sidelink) RB, a group of frequency resources for a flexible direction (which may be configured for, for example, a first direction, a second direction, etc.) may be called a flexible subband, flexible frequency resource, or flexible RB, and a group of frequency resources between the first and second directions may be called a guard band, guard frequency resource, or guard RB.

[0126] For example, a (SBFD-enabled) WTRU may receive configuration information in one or more DL / UL / flexible TDD time instances (e.g., symbols, slots, frames, etc.) or consist of one or more SBFD UL, DL, sidelink, flexible, and / or guard subbands. The WTRU may consist of one or more resource allocations to the SBFD subbands.

[0127] For example, an SBFD configuration may include a flag signal (e.g., enabled / disabled), where, for example, a first value (e.g., 0) indicates a first operating mode (e.g., SBFD configuration), and a second value (e.g., 1) indicates a second operating mode (e.g., non-SBFD operation). The operating mode (e.g., SBFD and / or non-SBFD) may be indicated semi-statically (e.g., via RRC), dynamically (e.g., via MAC-CE, DCI), etc., via MIB, SIB. The WTRU may receive time resources (e.g., one or more symbols, slots, etc.) defined in, for example, one or more BWPs, subbands, component carriers (CCs), cells, etc., in the first operating mode (e.g., SBFD). The WTRU may receive frequency resources (e.g., subbands / BWPs including one or more PRBs) in a (active and / or linked) BWP in which the first operating mode (e.g., SBFD) is configured. Time instances (e.g., slots, symbols) can be represented based on periodic, semi-permanent, or aperiodic configurations. In one example, time instances may be represented via a bitmap configuration, where each bit corresponds to a time instance (e.g., slot, symbol, subframe, etc.), and each bit representation indicates whether the corresponding time instance can be used for a first mode of operation or a second mode of operation.

[0128] RAN#94-e agrees on RAN considerations regarding new radio (NR) duplex operation. This technology could provide a significant foundation for improving conventional TDD operation by enhancing UL coverage, improving capacity, and reducing latency. Conventional TDD is based on dividing the time domain between uplink and downlink in terms of gNB. NR Rel.18 investigates the feasibility of enabling full-duplex, or more specifically, subband non-overlapping full-duplex (SBFD) in gNB within the conventional TDD bandwidth, while the WTRU operates in half-duplex (HD) (see Figure 2-1). HD-based operation may mean that the WTRU may either transmit (UL) signals or receive (DL) signals on a symbol, but may not transmit (UL) signals and receive (DL) signals on the same symbol simultaneously.

[0129] The implementation of SBFD is contingent on resolving the significant challenges arising from cross-layer interference (CLI). In an SBFD (or dynamic / flexible TDD) framework, a potential aggressor cell may switch from UL to DL, or vice versa, causing CLI on the potential affected gNB and WTRU. In UL-to-DL CLI, UL transmissions from the aggressor WTRU may cause directional CLI on the affected WTRU (see Figure 2-2). CLI can be measured on both the affected WTRU and / or the aggressor WTRU.

[0130] It is sometimes desirable for a WTRU capable of SBFD (simultaneous Tx / Rx across non-overlapping SBs) to efficiently manage self-interference from UL Tx (UL SB) to DL Rx (DL SB).

[0131] A WTRU capable of full-duplex (FD) operation (simultaneous Tx / Rx across fully or partially overlapping SBs) is sometimes desirable to efficiently manage self-interference from UL Tx to DL Rx.

[0132] Combined WTRU behavior across gNB-SBFD configurations and additional WTRU-SBFD configurations for WTRU-side full-duplex operation: Overview

[0133] The following is an overview of the combined WTRU behavior across gNB-SBFD configurations and additional WTRU-SBFD configurations for WTRU-side full-duplex operation, according to the embodiments. Further details of these embodiments can be found in the relevant sections.

[0134] A WTRU may receive a first SBFD configuration (e.g., a first UL SB, a first DL SB, a first guard band, a first flexible SB, and / or frequency / time position information for a first set of SBFD symbols / slots) from the perspective of gNB-SBFD. The first SBFD configuration may be received via a system information block (e.g., SIB), broadcast messages, and / or multicast messages directed to a group of WTRUs. On the symbols of the first set of SBFD symbols, a WTRU may either transmit a UL signal or receive a DL signal (e.g., half-duplex (HD) operation).

[0135] The WTRU may receive a second SBFD configuration (e.g., a second UL SB, a second DL SB, a second guard band, a second flexible SB, and / or frequency / time position information for a second set of SBFD symbols / slots) from a WTRU-SBFD perspective, and the second SBFD configuration may be within the first SBFD configuration. This configuration may be provided by WTRU-specific RRC (and / or MAC-CE) signaling. Configuration parameters for the second SBFD configuration may include one or more parameters defined based on / dependent on the first SBFD configuration, e.g., bitmap information on valid frequency / time domain resources in the first SBFD configuration. On the symbols of the second set of SBFD symbols, the WTRU, as a WTRU-SBFD operation, simultaneously transmits UL signals or UL channels (e.g., on a second UL SB) and receives DL signals or DL ​​channels (e.g., on a second DL SB). Among the advantages of the second SBFD configuration is that the WTRU may implement a DL Rx filter that is (semi-statically) fixed across the frequency domain (for example, for efficient handling of self-interference (SI) in the WTRU when simultaneously transceiving UL on UL SB), and does not anticipate frequent changes to the DL Rx filter, which reduces the complexity of the WTRU.

[0136] Behavior of WTRU in combined first and second SBFD configurations: The WTRU may receive (or determine) a configuration for DL ​​RS resources for measurement and / or link quality detection (e.g., beam fault detection, BFD, radio link fault detection, RLF, etc.), and the DL RS resources (e.g., CSI-RS, SSB, etc.) span one or more gNB-SBFD symbols (of the first set of SBFD symbols) and one or more WTRU-SBFD symbols (of the second set of SBFD symbols).

[0137] At least one of the following WTRU behaviors can be configured to be performed by the WTRU.

[0138] Example 1: The WTRU is configured to perform link quality detection based on measurements using only one or more gNB-SBFD symbols (excluding measurements on one or more WTRU-SBFD symbols). If the measured link quality is below a threshold, the WTRU performs the configured link recovery procedure.

[0139] Example 2: The WTRU is configured to perform a second link quality detection (separately or additionally) based on measurements using only one or more WTRU-SBFD symbols. If the measured second link quality is below a second threshold, the WTRU is configured to perform at least one of the following behaviors in Examples 2A and 2B.

[0140] Example 2A: The WTRU reports the measurement results (for example, based on the second link quality) and / or sends a request to update the current WTRU-SBFD configuration, e.g., reconfiguration of the second set of SBFD symbols, the second UL SB, the second DL SB, and / or the reconfiguration on the second guard band, and as a result, the WTRU updates the DL Rx filter used on the second DL SB accordingly.

[0141] Example 2B: The WTRU decides to fall back to a second set of current SBFD symbols to conform to the first SBFD configuration, for example, to fall back to half-duplex operation instead of WTRU-SBFD operation. The WTRU may also report the fallback decision to the gNB and / or receive confirmation from the gNB.

[0142] The WTRU may perform the behaviors of Example 2A and / or Example 2B based on receiving other DL signals or channels, such as PDSCH, PDCCH, specific CSI-RS, RRM resources, etc. For example, the WTRU may perform Example 2A and / or Example 2B when more than N (e.g., consecutive) PDSCH reception failures (e.g., NACKs) on a second set of SBFD symbols are determined within a (configured) time period. The value of N can be configured.

[0143] Behavior of combined WTRUs across gNB-SBFD configurations and additional WTRU-SBFD configurations for WTRU-side full-duplex operation: Detailed operation

[0144] The following is a detailed description of the behavior of combined WTRUs across gNB-SBFD configurations and additional WTRU-SBFD configurations for WTRU-side full-duplex operation, according to the embodiments.

[0145] Combination of gNB-SBFD and WTRU-SBFD

[0146] According to one embodiment, a WTRU may receive a first set of configuration information for an operating mode. According to one embodiment, a WTRU may receive a first set of SBFD configurations. For example, a WTRU may receive a first set of SBFD configurations for gNB-SBFD operation, for example, as shown in Figure 3A. According to one embodiment, the first SBFD configuration may include information about the time resources (e.g., symbols, slots, etc.) to which the SBFD (e.g., gNB-SBFD) is applied. According to another embodiment, the first SBFD configuration may include information about frequency resources in the configured (or indicated) SBFD time resources for, for example, a first UL subband, a first DL subband, a first guard band, a first sidelink SB, a first flexible SB, etc. According to one embodiment, a WTRU may receive the first SBFD configuration via DCI, MAC-CE, RRC, System Information Block (SIB), broadcast messages, multicast messages directed to a group of WTRUs, etc.

[0147] According to one embodiment, the WTRU may operate in half-duplex (HD) operation using a first set of SBFD configurations, and the WTRU may either transmit UL (or sidelink) signals or receive DL (or sidelink) signals in a configured (or indicated) SBFD time instance. According to another embodiment (for example, configured by a gNB), the WTRU may operate in full-duplex (FD) operation (e.g., subband non-overlapping FD (SBFD), subband partial / fully overlapping FD) using a first set of SBFD configurations, and the WTRU may both transmit UL (or sidelink) signals and receive DL (or sidelink) signals in a configured (or indicated) SBFD time instance.

[0148] According to one embodiment, the WTRU may receive a second set of configuration information for operating modes. In one example, the WTRU may receive a second set of SBFD configurations, for example, as shown in Figure 3B and further detailed as shown in Figure 3C. According to one embodiment, the WTRU may receive a second set of SBFD configurations for WTRU-SBFD operation. According to one embodiment, the second SBFD configuration may include information about the time resources (e.g., symbols, slots, etc.) to which the SBFD (e.g., WTRU-SBFD) is applied. According to another embodiment, the second SBFD configuration may include information about frequency resources in the configured (or indicated) SBFD time resources for, for example, a second UL subband, a second DL subband, a second guard band, a second sidelink subband, a second flexible SB, etc. According to one embodiment, the WTRU may receive the second SBFD configuration via WTRU-specific DCI, MAC-CE, and / or RRC.

[0149] According to one embodiment, the configured second time and frequency resources may be a subset of the configured first time and frequency resources. That is, the second configured SBFD configuration may be a subset of the first configured SBFD configuration. The WTRU may operate in full-duplex (FD) operation (e.g., subband non-overlapping FD (SBFD), subband partial / full overlapping FD) using the second set of SBFD configurations, and the WTRU may simultaneously transmit UL (or sidelink) signals and receive DL (or sidelink) signals in SBFD time instances configured by the second SBFD configuration (e.g., WTRU-SBFD operation).

[0150] According to one embodiment, the WTRU may receive and / or be configured with a second SBFD configuration, the second SBFD configuration may relate to, correspond to, map to, be based on, and / or depend on a first SBFD configuration.

[0151] According to one embodiment, a second SBFD configuration on a frequency resource may be represented based on a first SBFD configuration on a frequency resource. According to one embodiment, the WTRU may consist of a bitmap for the second SBFD configuration on the frequency resource, the bitmap may correspond to a grid of frequency resources based on the first configured SBFD frequency resource. According to one embodiment, each bit in the bitmap may correspond to one or more blocks of RB, frequency resources, and subbands in a grid of frequency resources based on the first configured SBFD frequency resource. Thus, for each bit in the configured bitmap, a first value (e.g., value 0) may indicate that related and / or corresponding frequency resources in the first SBFD frequency resource are not included in the second SBFD frequency resource. Alternatively, according to one embodiment, for each bit in the configured bitmap, a second value (e.g., value 1) may indicate that related and / or corresponding frequency resources in the first SBFD frequency resource are not in the second SBFD frequency resource.

[0152] According to another embodiment, a second SBFD configuration on a time resource may be represented based on a first SBFD configuration on a time resource. According to one embodiment, the WTRU may consist of a bitmap for the second SBFD configuration on a time resource, the bitmap may correspond to a grid of time resources based on a first configured SBFD time resource. According to one embodiment, each bit in the bitmap may correspond to one or more blocks, such as symbols, slots, or subframes, in the time resource based on the first configured SBFD time resource. Thus, for each bit in the configured bitmap, a first value (e.g., value 0) may indicate that the relevant and / or corresponding time instances and / or resources in the first SBFD time resource are not included in the second SBFD time resource. Alternatively, according to one embodiment, for each bit in the configured bitmap, a second value (e.g., value 1) may indicate that the relevant and / or corresponding time instances and / or resources in the first SBFD time resource are not in the second SBFD time resource.

[0153] According to one embodiment, the WTRU may receive a second set of SBFD configurations, the second SBFD configurations may include only time configuration information and configuration information relating to a second DL (or sidelink) subband. That is, the WTRU may consider other frequency resources based on the first configured SBFD frequency resources and / or based on excluding the second DL (or sidelink) subband. According to one embodiment, the WTRU may use a configured first UL subband, a first guard band, a first flexible SB, etc., for WTRU-SBFD operation by, for example, excluding RBs that overlap with at least one RB of the second DL (or sidelink) subband. According to one embodiment, such a configuration may reduce the complexity of the WTRU in WTRU-SBFD operation with the second configured SBFD configuration.

[0154] The advantage of configuring a second SBFD configuration is that the WTRU may select, use, and / or implement one or more DL (or sidelink) Rx filters across the second configured SBFD frequency resource (e.g., a second DL (or sidelink) subband). According to one embodiment, the WTRU may be configured with or use one or more fixed DL Rx filters. The WTRU may select or use fixed DL Rx filters for efficient handling of self-interference (SI) in the WTRU, for example, when the WTRU is simultaneously transmitting UL transmissions on the UL subband. The WTRU may use fixed DL Rx filters to mitigate SI from UL signals transmitted simultaneously on the same symbol, and the DL Rx filters may not need to be changed frequently to reduce the complexity of the WTRU.

[0155] According to one embodiment, the WTRU may determine the guard band (e.g., guard RB) required for SBFD operation (e.g., WTRU-SBFD operation). According to one embodiment, the WTRU may determine the minimum guard band (e.g., guard RB) that the WTRU requires and / or may request for SBFD operation. The WTRU may determine that a first SBFD configured guard band (e.g., for a gNB SBFD configuration) is insufficient and lower than the determined minimum required guard band. Thus, the WTRU may request, receive, and / or use a second SBFD guard band for SBFD operation. According to one embodiment, the WTRU may operate in half-duplex operation based on a first set of SBFD configurations, or the WTRU may operate in WTRU-SBFD operation based on a second set of SBFD configurations.

[0156] Behavior of WTRU in combined first (e.g., gNB-SBFD) and second (e.g., WTRU-SBFD) SBFD configurations.

[0157] According to one embodiment, the WTRU may receive a first set and a second set of SBFD configuration information, which may correspond to gNB-SBFD operation and WTRU-SBFD operation, respectively. The first and second SBFD configurations may include information about the time resources (e.g., symbols, slots, etc.) to which the SBFD (e.g., gNB-SBFD or WTRU-SBFD) is applied. In addition, the first and second SBFD configurations may include information about frequency resources in the configured SBFD time resources for, for example, UL subbands, DL subbands, guard bands, flexible SB, etc.

[0158] According to one embodiment, a WTRU may receive one or more configuration pieces of information relating to one or more DL reference signals (RS) (e.g., SSB, CSI-RS, TRS, PT-RS, etc.). The WTRU may receive the configured DL reference signals and use the received DL RS for purposes such as measuring one or more parameters, link quality detection (e.g., radio link fault detection), beam quality detection (e.g., beam fault detection), etc. The WTRU may determine that the time and frequency resources configured for the DL RS may span time and frequency resources configured by a first set of SBFD configurations (e.g., gNB-SBFD) and time and frequency resources configured by a second set of SBFD configurations (e.g., WTRU-SBFD). At least one of the following exemplary embodiment options may apply.

[0159] Example 1: DL RS measurement based on a first (e.g., gNB-SBFD) SBFD configuration.

[0160] According to one embodiment, the WTRU may decide and / or be configured to use only a first set of SBFD configurations (e.g., gNB-SBFD) to receive one or more configured DL RSs. According to one embodiment, the WTRU may decide and / or be configured to use only gNB-SBFD symbols to receive configured DL RSs. That is, the WTRU may exclude receiving DL RSs based on a second set of SBFD configurations (e.g., for link quality detection). According to one embodiment, the WTRU may decide not to use the WTRU-SBFD symbol to receive configured DL RSs (e.g., for link quality detection). According to one embodiment, the DL RSs may be one or more of SSB, CSI-RS, TRS, PT-RS, etc. According to another embodiment, the WTRU may use the received DL RSs to measure one or more parameters (e.g., RSRP, CQI, PMI, etc.), determine beam and / or link quality, etc. Based on the measured parameters, the WTRU may decide to perform beam and / or link recovery procedures.

[0161] The advantage of using a first set of SBFD configurations (e.g., gNB-SBFD) is that it avoids underestimation of beam and / or radio link quality resulting from measurements in a second set of SBFD configuration symbols (e.g., WTRU-SBFD). Down estimation may be due to the WTRU using a DL Rx filter to mitigate self-interference (SI) from simultaneous UL transmissions. Thus, Option Example 1 may provide robustness to beam and / or radio link quality detection based on the half-duplex operation of the WTRU.

[0162] Example 2: DL RS measurement based on a second (e.g., WTRU-SBFD) SBFD configuration.

[0163] According to one embodiment, the WTRU may decide to perform or perform a second link quality measurement based on a second set of SBFD configurations. According to one embodiment, the second link quality measurement may be based on the WTRU-SBFD configuration and / or symbols. According to one embodiment, the WTRU may be configured to perform a second link quality measurement in addition to and / or separately from the first link quality measurement based on a first set of SBFD configurations.

[0164] According to another embodiment, the WTRU may decide to use or be configured to use a second set of SBFD configurations (e.g., WTRU-SBFD) to receive one or more configured DL RSs and / or channels. According to one embodiment, the DL RSs may be one or more of the following: SSB, CSI-RS, TRS, PT-RS, RRM resources, etc. According to another embodiment, the WTRU may use the received DL RSs for purposes such as measuring one or more parameters (e.g., RSRP, CQI, PMI, etc.), determining beam and / or link quality, etc. According to another embodiment, the WTRU may use the received DL channels to measure one or more parameters (e.g., PDCCH hypothetical BLER). According to another embodiment, the WTRU may use one or more events to determine a second link quality measurement. According to one embodiment, the WTRU may determine exemplary events based on detecting more than a configured maximum number of PDSCH reception failures (e.g., NACKs) within a configured time period for receiving PDSCHs configured in a second SBFD resource (e.g., WTRU-SBFD).

[0165] Therefore, based on the measurement (for example, based on the WTRU-SBFD configuration and / or symbol), the WTRU may determine that the measured second link quality is lower than the corresponding second threshold, and the WTRU may be configured to perform at least one of the following behaviors in Examples 2A and 2B.

[0166] Example 2A: Request to update a second (e.g., WTRU-SBFD) SBFD configuration.

[0167] According to one embodiment, the WTRU may report one or more measurement results that the WTRU can measure based on a second SBFD configuration (e.g., WTRU-SBFD), and the report may include a request to update the second SBFD configuration (e.g., WTRU-SBFD). According to one embodiment, the WTRU may request a reconfiguration of one or more of the following: a second set of SBFD time resources (e.g., symbols, slots, etc.), a second set of UL subbands, a second set of DL subbands, a second set of flexible subbands, a second set of guard bands, etc. If the WTRU receives one or more configuration pieces for the reconfiguration of at least one of the above configurations, the WTRU may update the respective DL Rx filters accordingly.

[0168] Example 2B: Fallback to use a first (e.g., gNB-SBFD) SBFD configuration.

[0169] According to one embodiment, a WTRU may decide to fall back to operate based on a first set of SBFD configurations. According to one embodiment, the first set of SBFD configurations may be based on gNB-SBFD configurations and operations. According to one embodiment, a WTRU may decide that it is configured for simultaneous UL transmission (e.g., SPS UL) and DL reception (e.g., configuration grant) based on a second configuration for WTRU-SBFD operation. Thus, a WTRU that has decided to fall back to using at least one parameter of the first set of SBFD configurations (e.g., used in a symbol or slot initially allocated under the second configuration for WTRU-SBFD operation) may decide to perform a half-duplex operation (in a symbol or slot) which is either UL transmission or DL ​​reception in a time instance. A WTRU may decide to transmit a UL and skip DL reception, or alternatively, the WTRU may decide to skip UL transmission and receive DL based on one or more priority modes. According to one embodiment, if UL transmission has a higher priority than DL reception, the WTRU may transmit a UL and skip DL reception. According to another embodiment, if DL reception has a higher priority than UL transmission, the WTRU may skip the UL transmission and receive the DL.

[0170] According to an alternative embodiment, the WTRU may decide to fall back to non-SBFD behavior (for example, in symbols or slots that were initially allocated under a second configuration for WTRU-SBFD behavior) based on a non-SBFD configuration and / or non-SBFD time instance (e.g., symbols, slots, etc.). In one example, the WTRU may send ULs in time instances of ULs only (legacy ULs) and / or in time instances where the fallback behavior applies.

[0171] The WTRU may send an indication (e.g., via a report, e.g., to the gNB) to indicate that the WTRU has decided to fall back (and / or has already performed a fallback operation). The WTRU may receive an acknowledgment for a fallback operation from the gNB, which may include one or more configuration pieces of information regarding the fallback operation mode.

[0172] Example 3: DL RS measurement based only on valid RB.

[0173] According to one embodiment, the WTRU may decide, or be configured to receive and measure scheduled and / or configured DL signals and channels only within a second configured SBFD time and frequency resource. According to one embodiment, the frequency resource may be one or more RBs, subbands, BWPs, etc. Thus, the WTRU may drop or skip receiving DL signals and channels that do not overlap with the second set of SBFD configurations. According to one embodiment, the WTRU may drop or skip DL signals and channels that are within the first SBFD configured resource but outside the second SBFD configured resource.

[0174] According to another embodiment, the WTRU may decide to receive and measure scheduled and / or configured DL signals and channels that overlap with a first configured SBFD time and frequency resource, or may be configured to do so. According to one embodiment, the frequency resource may be one or more RBs, subbands, BWPs, etc. Thus, the WTRU may receive and / or measure DL signals and channels that are within the first set of SBFD configured resources, even if the DL signals and channels are outside the second set of SBFD configured resources.

[0175] Dynamic DL discontinuous resource allocation for WTRU-SBFD

[0176] According to one embodiment, a WTRU may receive one or more indicators, and based on these indicators, the WTRU may receive configured and / or scheduled DL receptions on continuous or discontinuous resources. According to one embodiment, a WTRU may receive an indicator regarding whether there are scheduled UL transmissions in the corresponding time instance. According to one embodiment, a WTRU may receive, as part of the FDRA field, an indicator regarding whether the WTRU should skip DL receptions on the UL subband (e.g., discontinuous DL receptions) or whether the WTRU can continue DL receptions (e.g., continuous DL receptions) on the UL subband.

[0177] According to another embodiment, the WTRU may receive one or more indications in the DL grant indicating whether some RBs outside the DL SB are unavailable for DL ​​reception and should be excluded for DL ​​reception. According to one embodiment, the WTRU may receive an indication along with an FDRA field indicating RBs spanning a first DL SB, UL SB, second DL SB, etc. The WTRU may determine whether the DL resource allocation is via discontinuous resources relative to the WTRU-SBFD based on one or more of the following:

[0178] Explicit indication: Reuse of current FDRA: According to one embodiment, a WTRU may receive an additional indication along with the FDRA indicating whether to use or skip and / or exclude UL subbands.

[0179] Implicit indication: The WTRU may determine whether an RB in the DL FDRA conflicts with the UL subband. According to one embodiment, the WTRU may determine that there is a UL signal and / or channel (e.g., CG-PUSCH) scheduled for UL transmission in the UL subband. Therefore, the WTRU may determine that the configured DL takes precedence and may drop the UL (e.g., CG-PUSCH) transmission.

[0180] Maximum transition time control and reporting

[0181] According to one embodiment, the WTRU may send reports and / or indications (e.g., to the gNB) to indicate the maximum number of transition points that the WTRU may support within a time period. According to one embodiment, the WTRU may send indications via capability reports, event-based reports, periodic reports, etc. According to one embodiment, the WTRU may transition and / or switch between symbols composed of a second set of SBFD symbols (e.g., WTRU-SBFD) and other types of symbols. For example, the other types of symbols may be symbols composed of a first set of SBFD symbols (e.g., gNB-SBFD) or non-SBFD symbols. The WTRU may indicate the number of transition points and / or switching points supported, possible, and / or preferred by the WTRU within a time period. According to one embodiment, the time period may be a configured duration based on, for example, a TDD cycle, a UL / DL configuration pattern, one or more slots, and / or defined or configured periods.

[0182] According to another embodiment, the WTRU may report and / or send an indication of whether any required time gap period is necessary for WTRU-SBFD operation. According to one embodiment, the WTRU may determine the time gap period based on the measurement gap, interruption time and / or duration, etc. The WTRU may determine and / or indicate the time gap period between a first symbol of a first set of SBFD symbols (e.g., gNB-SBFD) and a second symbol of a second set of SBFD symbols (e.g., WTRU-SBFD).

[0183] Separate power control for WTRU-SBFD operation

[0184] According to one embodiment, the WTRU may decide to use or be configured to use a first set of power control (PC) parameters for operation based on a first set of SBFD configurations (e.g., gNB-SBFD), a second set of power control parameters for operation based on a second set of SBFD configurations (e.g., WTRU-SBFD), and / or a third set of power control parameters for non-SBFD operation. According to one embodiment, the first, second, and third sets of power control parameters may include separate and / or different open-loop and / or closed-loop power control parameters.

[0185] Therefore, when a WTRU transmits on a resource based on a first set of SBFD configurations, it may transmit UL signals and / or channels using a first set of PC parameters; when a WTRU transmits on a resource based on a second set of SBFD configurations, it may transmit UL signals and / or channels using a second set of PC parameters; when a WTRU transmits on a resource based on a third set of SBFD configurations, it may transmit UL signals and / or channels using a third set of PC parameters; and so on.

[0186] According to one embodiment, a WTRU may receive one or more fallback indicators (e.g., via DCI) to use a first set of (PC) parameters when transmitting over a resource based on a second set of SBFD configurations. According to another embodiment, a WTRU may receive one or more fallback indicators (e.g., via DCI) to use a third set of (PC) parameters when transmitting over a resource based on a second set of SBFD configurations. According to yet another embodiment, a WTRU may receive one or more fallback indicators (e.g., via DCI) to use a third set of (PC) parameters when transmitting over a resource based on a first set of SBFD configurations.

[0187] Dynamic DL SB selection for DL ​​reception based on scheduled UL resources in UL SB: Overview

[0188] The following is an overview of dynamic DL SB selection for DL ​​reception based on scheduled UL resources within the UL SB, according to the embodiments. Details of these embodiments can be found in the relevant sections.

[0189] A WTRU may report its ability to simultaneously transmit UL signals and receive DL signals (WTRU capability) (e.g., WTRU-SBFD operation across non-overlapping frequency resources).

[0190] The WTRU may receive a configuration that includes at least a UL SB, a first DL SB, and a second DL SB, where the UL SB may be located between the first DL SB and the second DL SB in the frequency domain (e.g., at the RB level).

[0191] WTRU may receive UL grants (e.g., configuration grants by RRC and / or MAC-CE, dynamic grants by DCI) that schedule the transmission of UL signals on at least a set of symbols (e.g., within a UL SB).

[0192] The WTRU may be configured to determine (select) a DL SB from the first and second DL SBs based on the UL signal or channel frequency resources and at least one of the following selection criteria (benefit: supporting a low-complexity WTRU using only one fixed DL Rx filter on only one of the discontinuous DL SBs on the symbol, which may be part of the WTRU capability report).

[0193] Exemplary selection criterion 1 (based on RB distance between UL and DL): A WTRU may decide to select a DL SB where the SB boundary of the DL SB (or a scheduled DL signal or channel within the DL SB (e.g., PDSCH)) has a greater RB distance from the UL signal. The WTRU may receive a DL signal (one of the first DL signal and one of the second DL signals) within the selected DL SB, the WTRU may receive other scheduled DL signals (e.g., PDCCH, CSI-RS, etc.) within the same (selected) DL SB, and the WTRU may not receive any DL signals within an unselected DL SB.

[0194] Exemplary Selection Criterion 2 (Based on Configuration or Indicated Primary and Secondary DL SBs): The WTRU may receive an indication (or configuration) regarding which DL SBs are primary (or default) DL SBs and / or which DL SBs are secondary DL SBs. For example, a first DL SB may be indicated as a primary (or default) DL SB. A second DL SB may be indicated (or determined) as a secondary DL SB. The WTRU may decide to select the DL SB that is the primary (or default) DL SB. A WTRU may receive DL signals (one of the first DL signals and one of the second DL signals) within a determined DL SB (primary DL SB), a WTRU may receive other scheduled DL signals (e.g., PDCCH, CSI-RS, etc.) within the same DL SB, a WTRU may not receive DL signals within an unselected DL SB, exemplary criterion 2 may apply when exemplary criterion 1 cannot select one DL SB (e.g., due to the same RB distance), and if a DL signal is not scheduled on a primary (or default) DL SB, a WTRU may receive DL signals on a secondary DL SB.

[0195] Example Criterion 3: WTRU may select DL SB based on DL channel / signal type (e.g., PDCCH, PDSCH, CSI-RS, TRS, SSB, etc.) using prioritization rules.

[0196] If the UL signal is not scheduled on its symbol, the WTRU may receive the DL signal on both DL SBs (when it is scheduled on both DL SBs).

[0197] Dynamic DL SB selection for DL ​​reception based on scheduled UL resources in UL SB: Detailed operation

[0198] The following describes in detail the operation of dynamic DL SB selection for DL ​​reception based on scheduled UL resources within the UL SB, according to an embodiment.

[0199] According to one embodiment, a WTRU may report its ability (e.g., WTRU capability signaling) indicating that the WTRU can simultaneously transmit UL signals and receive DL signals (e.g., WTRU-SBFD operation over non-overlapping frequency resources, or WTRU-FD operation over partially or completely overlapping frequency resources). A WTRU may receive a configuration indicating at least a UL SB, a first DL SB, and a second DL SB, where the UL SB may be located between the first DL SB and the second DL SB in the frequency domain (e.g., RB level). A WTRU may receive UL grants (e.g., configuration grants by RRC and / or MAC-CE, dynamic grants by DCI) that schedule the transmission of UL signals on at least a set of symbols (e.g., within the UL SB).

[0200] According to one embodiment, provided that at least one DL signal (e.g., one DL signal repeated within a resource spanning the first and second DL SBs, or two DL signals, such as a first DL signal (e.g., PDSCH on the first DL SB) and a second DL signal (e.g., CSI-RS or CORESET on the second DL SB)) is scheduled to be received on each of the first and second DL SBs on a set of symbols, the WTRU may be configured to determine (e.g., select) a DL SB from the first and second DL SBs based on at least one of the following selection criteria:

[0201] Exemplary Criterion 1 (based on RB distance between UL and DL): A WTRU may decide to select a DL SB where the SB boundary of the DL SB (or a scheduled DL signal within the DL SB (e.g., PDSCH)) has a greater RB distance from the UL signal. The WTRU may receive a DL signal (e.g., one of the first DL signal and the second DL signal) within the selected DL SB (e.g., the first DL SB). The WTRU may receive other scheduled DL signals (e.g., PDCCH, CSI-RS, etc.) within the same (selected) DL SB. The WTRU may not receive any DL signals within an unselected DL SB (e.g., the second DL SB) (e.g., none).

[0202] Exemplary Criterion 2 (Based on Configuration or Indicated Primary and Secondary DL SBs): The WTRU may receive an indication (or configuration) regarding which DL SB is the primary (or default) DL SB and / or which DL SB is the secondary DL SB. In one example, the first DL SB may be indicated as the primary (or default) DL SB. The second DL SB may be indicated (or determined) as the secondary DL SB. The WTRU may decide to select the DL SB that is the primary (or default) DL SB.

[0203] A WTRU may receive DL signals (e.g., one of the first and second DL signals) within a determined DL SB, which may be the primary DL SB (e.g., the first DL SB). A WTRU may also receive other scheduled DL signals (e.g., PDCCH, CSI-RS, etc.) within the same (determined) DL SB. A WTRU may not receive any DL signals within an unselected DL SB (e.g., the second DL SB) (e.g., it may not receive any).

[0204] The WTRU may apply exemplary criterion 2 if exemplary criterion 1 does not allow for the selection of a single DL SB (for example, when the WTRU determines that there is no DL SB that represents a greater RB distance from the UL signal, for example, when the WTRU determines that the first RB distance between the UL signal and the first DL signal (or DL ​​SB) is the same as and equal to the second RB distance between the UL signal and the second DL signal (or DL ​​SB)).

[0205] Under the condition that the DL signal is not scheduled on the primary (or default) DL SB, the WTRU may receive the DL signal on the secondary DL SB.

[0206] Exemplary Criterion 3: WTRU may use prioritization rules to select DL SB based on several DL channel / signal types, which may include at least one of {PDCCH, PDCCH on CSS, PDCCH on USS, CORESET, CORESET#0, CORESET other than CORESET#0, CSI-RS, CSI-RS for Tracking (TRS), CSI-RS for Beam Management, CSI-RS for Mobility Management, CSI-RS for CSI Reporting, SSB, Cell-Defined (CD) SSB, Non-Cell-Defined (NCD) SSB, Configured SSB for Beam Management, Configured SSB for BFR, Periodic CSI-RS, Semi-Persistent CSI-RS, Non-Periodic CSI-RS, PDSCH, SPS-PDSCH, Dynamic Grant-Based PDSCH}.

[0207] If the UL signal is not scheduled on the symbol set, the WTRU may receive the DL signal on both DL SBs (when scheduled on both DL SBs) by using the first DL Rx filter to receive the DL signal on both DL SBs instead of using a second DL Rx filter to receive the DL signal on either of the two DL SBs (for example, to simultaneously mitigate self-interference from the UL signal's Tx). The WTRU may perform dynamic DL Rx filter selection among, for example, a first DL Rx filter (for receiving the DL signal on both DL SBs), a second DL Rx filter (for receiving the DL signal on the first DL SB), and a third DL Rx filter (for receiving the DL signal on the second DL SB). The first DL Rx filter may also be the default DL Rx filter used for non-SBFD symbols (and / or, for example, a first set of SBFD symbols to which WTRU-SBFD operation does not apply but gNB-SBFD operation does).

[0208] Example of dynamic WTRU-SBFD operation based on multiple WTRU-SBFD configurations

[0209] According to one embodiment, a WTRU may receive one or more WTRU group-specific SBFD configurations (e.g., each indicating frequency / time position information relating to one or more UL SBs, one or more DL SBs, one or more guard bands, one or more flexible SBs, and / or a set of SBFD symbols / slots). A WTRU may not receive a first set of SBFD configurations (e.g., gNB-SBFD related configurations).

[0210] Each of the one or more WTRU group-specific SBFD configurations may be associated with a group ID (group X).

[0211] According to one embodiment, the WTRU may receive a Group 1 indication (e.g., MAC-CE and / or DCI), and the WTRU may identify frequency / time position information such as DL SB (Group 1), UL SB (Group 1), as shown in the example in Figure 4.

[0212] Example of group-based SB division from a gNB-SBFD configuration

[0213] According to one embodiment, a WTRU may determine an SBFD configuration specific to one or more WTRU groups based on a predefined or preconfigured pattern from a gNB-specific SBFD configuration, for example as follows:

[0214] Group 1: gNB-specific SBFD configuration (e.g., a first set of SBFD configurations) having an upper region (e.g., half) of the first DL SB, where the WTRU may be configured or shown using at least an upper UL SB (e.g., including the upper edge RB of the UL SB), as in Figure 4, or

[0215] Group 2: gNB-specific SBFD configurations (e.g., a first set of SBFD configurations) having a subregion (e.g., half) of the first DL SB, where the WTRU may be configured or shown using at least a lower UL SB (e.g., including the lower edge RB of the UL SB), as in Figure 4.

[0216] This may be beneficial in that, based on the WTRU's positioning and / or beam direction information, a gNB-specific SBFD configuration can be divided into one or more WTRU group-specific SBFD configurations, each of which can be signaled to, switched, or updated by the WTRU (as a low-complexity switching mechanism using group IDs).

[0217] Dynamic switching of WTRU group-specific SBFD configurations

[0218] According to one embodiment, a WTRU may receive a DCI indicating a group ID (group X, for example, X=1,2,3,4 in Figure 4). The DCI may be a group-common DCI received by one or more WTRUs (e.g., DCI format 2.0, or something similar to a TPC command DCI). The DCI may be a WTRU-specific DCI (e.g., a DL grant and / or UL grant).

[0219] According to one embodiment, only time-domain information (applicable symbols) may be represented by DCI, for example, by group DCI (broadcast) or by WTRU-specific DCI, while group X may consist only of frequency-domain configuration.

[0220] According to one embodiment, the WTRU may determine (or receive an indication of) a default group for the WTRU (e.g., group ID=3) so as to be applicable unless a dynamic group indication is given. In one example, if no DL grants are received over a period of time, the WTRU switches to the default group. According to one embodiment, the WTRU may receive a separate indication (e.g., MAC-CE and / or DCI) that indicates (e.g., updates) the default group.

[0221] According to one embodiment, the WTRU may receive a time-domain offset parameter regarding when to switch the WTRU group-specific SBFD configuration. The time-domain offset parameter may be indicated in the same DCI that indicates the group ID. In another example, the time-domain offset parameter may be indicated separately, for example, via RRC, MAC-CE, and / or a second DCI.

[0222] Examples of implicit group decisions by FDRA

[0223] According to one embodiment, a WTRU may receive a DL (e.g., PDSCH) frequency domain resource allocation (e.g., by the FDRA) in a DL grant. Given that the DL SB in the current group does not (completely) include the PDSCH scheduled by the FDRA, the WTRU is configured to select one group from four groups that covers the scheduled DL (e.g., PDSCH). According to one embodiment, the WTRU may be configured to select (e.g., determine) the group containing the DL SB that has the greatest overlap with the scheduled PDSCH.

[0224] Exemplary behavior 1D:WTRU may cut (e.g., rate matching, puncture, truncation, etc.) RBs outside the DL SB of the determined group.

[0225] Exemplary behavior 2D: WTRU may receive DLs (e.g., PDSCH) scheduled by FDRA, and simultaneous UL transmissions may be dropped or adjusted.

[0226] If the k0 (timing from DCI to PDSCH) indicated in the DL grant is below a threshold (for example, not enough to prepare the PDSCH Rx), the WTRU may decide to use the default group (or remain in the current group).

[0227] Based on the determined group, the WTRU may transmit UL signals or channels in the UL SB of the determined group.

[0228] According to one embodiment, a WTRU may receive a UL (e.g., PUSCH) frequency domain resource allocation (e.g., by the FDRA) in a UL grant. Given that the UL SB in the current group does not (completely) include the PUSCH scheduled by the FDRA, the WTRU is configured to select one group from four groups that covers the scheduled UL (e.g., PUSCH). The WTRU may be configured to select (e.g., determine) the group containing the UL SB with the greatest overlap with the scheduled PUSCH.

[0229] Exemplary behavior 1U:WTRU may cut (e.g., rate matching, puncture, truncation, etc.) RBs outside the UL SB of the determined group.

[0230] Exemplary behavior 2U:WTRU may send ULs (e.g., PUSCH) as scheduled by FDRA, and simultaneous DL reception may be dropped or staggered.

[0231] If the k2 (timing from DCI to PUSCH) indicated in the UL grant is below the threshold (e.g., not enough to prepare the PUSCH Tx), the WTRU may decide to use the default group (or remain in the current group).

[0232] Based on the determined group, the WTRU may receive DL signals or channels in the DL SB of the determined group.

[0233] The above example / embodiment may offer benefits in terms of reducing the complexity of the WTRU implementation, and as a result, the WTRU may implement multiple candidate multiplexing (group) patterns, each having a fixed DL Rx filter, for efficient processing of SIs in the WTRU when simultaneous transmission and reception are performed in the WTRU on symbols, which is particularly beneficial for dynamic WTRU-SBFD scenarios, for example, where the WTRU group-specific SBFD configuration may change dynamically over time.

[0234] The above example / embodiment may offer benefits in terms of reducing the complexity of gNB implementation, in that the gNB may select which WTRUs should belong to which group in terms of crosslink interference (CLI) processing efficiency, for example, by grouping together WTRUs that have sufficient separation in terms of position / beam region.

[0235] Tx / Rx parameter adaptation including RB gap-based rate matching with link prioritization for SBFD-enabled WTRUs: Overview

[0236] The following is an overview of Tx / Rx parameter adaptation, including RB gap-based rate matching with link prioritization for SBFD-enabled WTRUs, according to the embodiments. Details of these embodiments can be found in the relevant sections.

[0237] For example, UL Tx adjustment using simultaneous DL Rx to avoid self-interference.

[0238] A WTRU may, for example, receive a configuration or indication within a UL SB that schedules the transmission of a UL channel or signal.

[0239] The WTRU may, for example, receive a configuration or indication within the DL SB that schedules the reception of DL channels or signals.

[0240] A WTRU may determine that at least one symbol overlaps between the transmission of a UL channel or signal and the reception of a DL channel or signal. For example, if a symbol is an SBFD symbol or a symbol in an SBFD slot, the UL channel may be scheduled to transmit in a UL SB, and the DL channel may be scheduled to receive in a DL SB of the same symbol (OFDM symbol).

[0241] WTRU may decide (or may decide whether to) perform UL Tx adjustments for UL transmissions in at least duplicate symbols, based on whether at least one of the following conditions / criteria is met:

[0242] Condition / Criterion 1: The frequency gap between the RB allocation of a DL channel or signal and the RB allocation of a UL channel or signal is less than the minimum RB gap value, which may be configured or indicated to the WTRU, for example, based on parameters related to the minimum required frequency gap indicated by the WTRU (e.g., as indicated capability), for example, the minimum RB gap value may be determined by the WTRU and / or indicated to the gNB by the WTRU (e.g., as indicated capability).

[0243] Condition / Criterion 2: A parameter or value representing the spatial domain (e.g., beam direction) separation between a DL channel or signal and a UL channel or signal is less than a spatial domain threshold, for example, based on a “forbidden beam pair” between UL and DL. For example, the parameter or value may be based on the difference per spatial domain index between a first beam direction index for the DL channel or signal and a second beam direction index for the UL channel or signal, and the spatial domain threshold or forbidden beam pair may be configured by a gNB or determined by a WTRU.

[0244] Condition / Criteria 3: Explicit indicators, e.g., “Link Priority Level Indicator (LPI)” representing the priority level on a UL channel or signal indicated in the WTRU: a) The LPI may be indicated in the UL grant that schedules the UL channel or signal; b) The LPI may be configured for or associated with the UL channel or signal, e.g., via a configuration grant-related configuration; c) The LPI may be indicated separately, e.g., via the RRC and / or MAC-CE; d) Exemplary LPI priority level indications: d1) “0”: Soft adjustment for UL Tx, i.e., no specific prioritization for UL, e.g., when the conditions for application (e.g., frequency gap or spatial separation conditions) are met; d2) “1”: Prioritization for UL, e.g., the WTRU prioritizes UL transmissions regardless of self-interference and transmits UL transmissions so that they are scheduled without adjustment. One or more DL Rx adjustments may be performed (e.g., skipping DL Rx or using rate matching, puncturing, etc. to exclude at least one RE or RB and receive the DL channel or signal), and e) LPI may be a one-shot display, or may be activated for a period of time, or may remain active until deactivated.

[0245] If the conditions / criteria for applying UL Tx adjustments are met, the WTRU may apply or perform at least one of the following UL Tx adjustments for the transmission of UL channels or signals:

[0246] UL Tx Adjustment 1: If the calculated or determined UL Tx power of a UL channel or signal exceeds the maximum permissible (or permitted) power level associated with self-interference, the WTRU may adjust (e.g., set) the UL Tx power level of the UL channel or signal to the maximum permissible (or permitted) power level associated with self-interference, transmit the UL channel or signal using the adjusted power level, and the WTRU may adjust the power on (e.g., on only) at least one symbol where the criterion is considered and / or met, e.g., at least one symbol where the UL Tx overlaps with the DL Rx (e.g., an SBFD symbol), and for other symbols, e.g., non-SBFD symbols, the WTRU may not perform UL Tx power adjustment based on self-interference, or the WTRU may adjust the power of all symbols in the UL transmission based on the power level determination of the overlapping symbols.

[0247] UL Tx Adjustment 2: The WTRU may transmit a UL transmit if the UL transmit omits a transmit on a set of REs or RBs (associated with self-interference) so that the gap between the DL transmit and the UL transmit increases (e.g., to meet or exceed the minimum RB gap value), and rate matching, puncturing, or shortening may be used, and the WTRU may receive information about a set of REs or RBs, for example via RRC, MAC-CE, and / or DCI, which may be based on parameters related to the minimum required frequency gap, and the WTRU may determine a set of REs or RBs, for example based on parameters related to the minimum required frequency gap, and the omission may apply to SBFD symbols (e.g., apply only to SBFD symbols).

[0248] Tx / Rx parameter adaptation including RB gap-based rate matching with link prioritization for SBFD-enabled WTRU: Detailed explanation

[0249] The following is a detailed description of Tx / Rx parameter adaptation, including RB gap-based rate matching with link prioritization for SBFD-enabled WTRUs, according to an embodiment.

[0250] According to one embodiment, the WTRU may be configured to adapt at least one parameter of transmission (or reception) as a function of at least one parameter of reception (or transmission) when at least one condition is met. Such an embodiment may enable the reliability of reception in situations where transmission may cause self-interference to reception, for example, when both transmission and reception occur within the same channel / bandwidth and may overlap in time.

[0251] According to one embodiment, the transmit may be for an uplink or sidelink physical channel or signal. The receive may be for a downlink or sidelink physical channel or signal. For example, the transmit may consist of PUSCH, PUCCH, SRS, or PRACH, and the receive may consist of PDCCH, PDSCH, SSB, or CSI-RS.

[0252] According to one embodiment, a WTRU may receive resources for transmission from RRC signaling alone (e.g., by configured grant type 1 for PUSCH, SRS configuration for periodic SRS, CSI configuration for periodic CSI, SR resource configuration for SR, and HARQ-ACK configuration for SPS), or from RRC signaling and DCI (e.g., by configured grant type 2 or dynamic grant for PUSCH, aperiodic SRS, and dynamic allocation for HARQ-ACK).

[0253] Conditions for Adaptation

[0254] According to one embodiment, the WTRU may adapt transmission and / or reception parameters when at least one or a combination of the following conditions is satisfied. For example, the WTRU may perform adaptation when transmission and reception overlap by at least one symbol in the time domain and a frequency distance condition as described below is satisfied.

[0255] Adaptation conditions: time overlap or distance

[0256] According to one embodiment, the condition may be that transmission and reception overlap in the time domain over at least one symbol (or a certain number of symbols).

[0257] According to one embodiment, the condition may be that a minimum time interval between transmission and reception (when there is no overlap in the time domain) is smaller than a time threshold.

[0258] Adaptation condition: frequency distance

[0259] According to one embodiment, the WTRU may determine a frequency gap between transmission and reception as a minimum number of resource blocks between a resource block occupied by transmission and a resource block occupied by reception.

[0260] According to one embodiment, the condition may be that a frequency gap between transmission and reception is smaller than a minimum frequency gap threshold, possibly only for overlapping transmission and reception portions in the time domain.

[0261] Adaptation condition: spatial domain

[0262] According to one embodiment, the condition may be based on a pair of beams used for transmission and reception. For example, the condition may be that the spatial domain separation metric or coupling metric between the transmit and receive beams is below a threshold. The WTRU may determine such a metric based on the beam used for reception and the beam used for transmission. The metric may be predefined or signaled for any pair of beams. For example, the metric may be based on the angle between the axes of maximum gain of the transmit and receive beams. In another example, the metric may be based on the difference per spatial domain index between a first beam direction index for the receive beam and a second beam direction index for the transmit beam. In yet another example, the WTRU may determine whether any pair of transmit and receive beams is permitted or prohibited. This information may be predefined or signaled for any pair of beams. The condition may also be that the pair of beams used for transmission and reception is a prohibited pair.

[0263] Adaptation criteria: Priority

[0264] According to one embodiment, the conditions may be a priority associated with transmission and a priority associated with reception, or a relative priority between transmission and reception. Such a priority may be called a link priority level indicator. The WTRU may determine such a priority based on at least one of the following:

[0265] The type of transmission or reception. For example, a PDSCH or PUSCH transmission may have a higher priority level than an SRS or periodic CSI transmission. In another example, a HARQ-ACK or SR transmission may have a higher priority than a PDSCH or PUSCH transmission. In one example, at least one of the following channel / signal types of a DL channel or signal may be preferred in a predefined or preconfigured set of preferred DL channel or signal types (e.g., among CSI-RS, SSB, DMRS, PDSCH, PDCCH, etc.). In one example, at least one of the following channel / signal types of a UL channel or signal may be preferred in a predefined or preconfigured set of preferred UL channel or signal types (e.g., among SRS, PRACH, DMRS, PUSCH, PUCCH, etc.).

[0266] Priority indications explicitly associated with transmit or receive. Priority indications may be received as part of an RRC configuration for transmit or receive. For example, priority indications may be configured by the RRC for configured grant configurations, HARQ-ACKs for SPS, periodic CSIs, SPS configurations, periodic SRSs, and SR resources. Priority indications may be explicitly indicated in the DCI, implicitly indicated by the DCI format or size, or configured for core sets, search spaces, or radio network temporary identifiers (RNTIs) that schedule transmits or receive. For example, fields in the DCI may indicate priority for scheduled PDSCHs, their associated HARQ-ACKs, scheduled PUSCHs, non-periodic CSIs, or SRSs. Priority indications may be indicated by MAC signaling. Priority indications may be the same as those used in existing systems for the purpose of intra-WTRU multiplexing, or they may be configured or indicated separately.

[0267] Conditions for adaptation: Composition of conditions

[0268] In the above, the number of symbols, time threshold, minimum frequency gap threshold, spatial domain separation threshold, prohibited beam pair, and / or priority may be predefined, configured by RRC, signaled by MAC, or indicated by DCI. The WTRU may provide capability information for a range of possible values ​​for at least one of these parameters. For example, the WTRU may provide the value or minimum value of the RB gap threshold. In another example, the WTRU may provide a spatial domain separation metric between beam pairs or between a transmitting panel and a receiving panel as part of its capability information.

[0269] Type of adaptation

[0270] According to one embodiment, the WTRU can perform one or more of the following actions when at least one condition is met:

[0271] Type of adaptation: Transmit power adaptation

[0272] According to one embodiment, the WTRU may set the power of the transmission according to a configuration that depends on at least one of the conditions described above.

[0273] According to one embodiment, the WTRU may determine or adjust the maximum transmit power when at least one condition is met. The adjustment may relate to the configured maximum transmit power per carrier (Pcmax,c) or to the maximum transmit power signaled by the upper layer. Alternatively, according to one embodiment, the WTRU may determine the absolute maximum transmit power level that is permissible against self-interference. The WTRU may first determine the required transmit power level using the rules of an existing system, and then set the power to the minimum value between this level and the maximum transmit power level that is permissible against self-interference.

[0274] According to one embodiment, provided that criteria for deciding to apply UL Tx adjustment (e.g., as part of transmit power adaptation) are met, the WTRU may apply or perform the following UL Tx adjustment for the transmission of UL signals: The UL Tx power level is adjusted (e.g., set) to the maximum allowable power level, for example, only for a specific symbol type (WTRU-SBFD symbol), based on (or equal to) the maximum configured Tx power (e.g., Pcmax,c_indicated) on at least one symbol (overlapping with DL Rx). For other symbols, e.g., non-SBFD symbols or symbols in a first SBFD configuration (e.g., gNB-SBFD configuration), the WTRU may be configured to maintain a first UL Tx power value determined based on the current UL power control processing for symbols other than at least one (overlapping) symbol, where the first UL Tx power value (e.g., Pcmax,c_original) may be higher than the maximum configured Tx power (Pcmax,c_indicated).

[0275] According to another embodiment, the WTRU can reduce the transmit power by an offset amount when at least one condition is met.

[0276] According to one embodiment, the adjustment value, the allowable maximum transmit power value, or the offset value may depend on at least one of the following:

[0277] Frequency gap between transmission and reception

[0278] Number of overlapping time symbols between transmission and reception

[0279] The spatial distance or coupling between beams used for transmission and reception.

[0280] The transmission priority level of a receive, such as whether the transmission priority level is equal to, greater than, or less than the reception priority level.

[0281] A WTRU may apply the transmission power level determined as described above across all symbols of a transmission. Alternatively, the WTRU may apply such transmission power level only to symbols that temporally overlap with reception, and may apply transmission power in accordance with existing operation to non-overlapping symbols.

[0282] Adaptation type: resource allocation adaptation

[0283] According to one embodiment, the WTRU may first receive resource allocation in time and / or frequency for transmission and beam indication from RRC, MAC, and / or DCI signaling in accordance with the solution in at least one embodiment. According to one embodiment, the WTRU may modify the resource allocation and / or beam when at least one condition is satisfied.

[0284] Resource allocation adaptation may be applied to transmission and / or reception.

[0285] According to one embodiment, the WTRU may puncture time symbols of transmission (reception) that temporally overlap with reception (transmission). The WTRU may use this embodiment under the condition that the resulting reduction of resource elements does not exceed a predefined or signaled threshold. The WTRU may puncture time symbols only for time symbols to which subband full-duplex operation is applied.

[0286] According to one embodiment, the WTRU may remove allocated resource blocks or elements of the transmit (receive) at the edge of the transmit (receive) so that the frequency gap with the receive (transmit) is equal to (or higher than) the minimum frequency gap. The WTRU may remove only the portion of such resource blocks that temporally overlap with the receive (transmit), for example, as shown in Figure 5. In one example, a set of REs or RBs including an extra RB gap (guard RB) for a UL channel or signal may be rate-matched, punctured, shortened, truncated, and / or omitted before transmit, for example, on at least one symbol (overlapping with DL Rx) to avoid self-interference exceeding an acceptable level on DL Rx. The WTRU may receive information about a set of REs or RBs, e.g., RRC, MAC-CE, and / or DCI, which can be obtained based on parameters related to the minimum required frequency gap. According to one embodiment, the WTRU may determine a set of REs or RBs, for example, based on parameters related to the minimum required frequency gap. According to one embodiment, the WTRU may determine that the set of REs or RBs is the minimum number of REs or RBs that satisfy the minimum required frequency gap between the UL channel or signal and the DL channel or signal, and that these are the “edge REs or RBs” of the UL channel or signal. For other symbols, e.g., non-SBFD symbols or symbols in a first SBFD configuration (e.g., gNB-SBFD configuration), the WTRU may be configured to preserve the frequency resources of the UL channel or signal (without applying the set of REs or RBs) so that it is transmitted on symbols other than at least one (overlapping) symbol, for example, the set of REs or RBs is selectively applied on at least one symbol.

[0287] According to one embodiment, the WTRU may receive information from RRC, MAC, or DCI signaling regarding which resources (or alternatively, resources still used if at least one condition is met) in the time domain and / or frequency domain should be removed. According to one embodiment, the WTRU may receive a configured grant configuration including a first time and / or frequency allocation applicable when at least one condition is not met, and a second time and / or frequency allocation applicable when at least one condition is met. The first and second allocations may be related to first and second modulation and coding schemes.

[0288] According to one embodiment, the WTRU may first map the encoded bits to the resource element before removing the resource as described above, so that the encoded bits mapped to the removed resource are punctured. According to an alternative embodiment, the WTRU may map the encoded bits to the resource element after removing the resource and apply rate matching based on the resulting number of encoded bits.

[0289] According to one embodiment, the WTRU may transmit and receive using a first transmit and receive beam when at least one condition is not met, and transmit and receive using a second transmit and receive beam when at least one condition is met, according to the solution in at least one embodiment. The WTRU may determine the second transmit and receive beam based on its association with the first transmit and receive beam. Such associations may be predefined or signaled by a higher layer.

[0290] In the exemplary embodiment of Figure 5, the WTRU may receive a first scheduling grant for PUSCH1 (spanning slots n+1 and n+2) and a second scheduling grant for PUSCH2 (on slot n+4), where each scheduling grant (e.g.) may be a configuration grant (CG) by RRC and / or MAC-CE, or a dynamic grant (DG) by DCI. The WTRU may determine that at least one symbol of PUSCH1 overlaps with a DL transmission at least temporally (e.g., WTRU-SBFD operation, WTRU-FD operation), and on at least one symbol, the WTRU receives a DL transmission and simultaneously transmits PUSCH1, and for example, the WTRU determines that at least one condition is met. Based on the determination that at least one condition is met, the WTRU may decide to apply resource allocation adaptations, for example, based on the WTRU's capabilities, including RB-level rate matching (RM) with additional guard RBs (REs) determined on a per-symbol basis (e.g., "extra RB gaps"). Resource allocation adaptations performed by a WTRU (e.g., including RB level RM) may be known to the gNB based on the gNB's configuration or signaling (e.g., via UCI, MAC-CE, etc.) regarding predefined rules for resource allocation adaptation behavior and / or WTRU behavior. The WTRU may receive indications about how to apply resource allocation adaptations, including, for example, the amount of additional RB gap, which may change or be updated over time and may be negotiated between the WTRU and the gNB (e.g., via a signaling handshake) based on wireless channel conditions that may change over time.

[0291] According to one embodiment, the WTRU may consist of multiple rate matching patterns, for example, one for cases where no actual DL is scheduled and another for cases where DL is scheduled (even under the condition that it is close to the SB boundary). The WTRU may apply one of the patterns to each symbol (e.g., within a slot, within the same physical channel / signal) for a given symbol, either by an implicit rule or by an explicit indication. A scheduling grant (e.g., a UL grant or DL ​​grant) may indicate an explicit selection of a rate matching pattern from among the multiple patterns. A scheduling grant (or separate RM signaling) may indicate a single rate matching pattern, and the WTRU determines which RM pattern to apply to each symbol (or set of symbols).

[0292] Type of adaptation: Selection of adaptation method

[0293] According to one embodiment, the WTRU may decide whether to apply one of the above adaptation methods and / or which adaptation method to select, based on the following:

[0294] For example, if the WTRU can receive an explicit indicator representing the priority level on the UL channel or signal, such as a "Link Priority Level Indicator (LPI)", then the link priority level indication associated with transmission and / or the link priority level indication associated with reception.

[0295] According to one embodiment, the WTRU may apply transmit power adaptation when the transmit priority level indicator is a first value, and may apply resource allocation adaptation to the transmit (in addition to transmit power adaptation, if applicable) when the transmit priority level is a second value.

[0296] According to one embodiment, the WTRU may apply resource allocation adaptation to the receive if the transmit link priority level indicator is a third value, or if it is higher than the receive link priority level indicator.

[0297] The LPI field, which indicates the LPI, may be included in the UL channel or UL grant used to schedule the signal.

[0298] The LPI may be configured, for example, in association with a UL channel or signal through a configured grant-related configuration.

[0299] LPI may be indicated separately, for example, via RRC and / or MAC-CE.

[0300] Examples of 1-bit LPI (e.g., how long it is applied, or if it is simply applied as a one-shot, or activated / deactivated over a certain amount of time):

[0301] "0": Soft adjustments regarding UL Tx - There is no specific priority for UL, and for example, UL Tx adjustments should be performed whenever necessary.

[0302] "1": Prioritization of ULs, e.g., "protected ULs", for performing simultaneous UL Tx and DL Rx, scheduled regardless of self-interference or, if necessary, one or more DL Rx adjustments (e.g., skipping DL Rx, receiving DL channels or signals other than at least one RE or RB via predefined or preconfigured rate matching, puncturing, etc.), such as on symbols where an SPS-PDSCH is already scheduled. For SPS-PDSCH, for this LPI=1, WTRU may apply a second MCS level and / or DL ​​rate matching, etc., which may, for example, impair DL throughput.

[0303] According to one embodiment, the WTRU may be configured or indicated to apply an extended “priority indication” in, for example, DCI formats 1_1, 1_2 (as DL-DCI) and 0_1, 0_2 (as UL-DCI). The extended “priority indication” may include prioritizing between UL and DL (for example, based on a reinterpretation of “priority indication” related fields in the DCI), which may add additional interpretations regarding opposite link directions / behavior based on at least one example shown above.

[0304] Figure 6 is a flowchart of Method 600, which is implemented by a wireless transceiver unit according to one embodiment of the operating mode of a WTRU in a network. This method is In 601, the steps include receiving a first set of subband non-overlapping full-duplex (SBFD) configuration information related to the SBFD operation of network nodes (NNs) in the network, In 602, the step of receiving a second set of SBFD configuration information related to the SBFD operation of the WTRU in the network, Step 603 is to determine a downlink reference signal (DL RS) resource for link quality detection, wherein the DL RS resource spans at least one NN-SBFD symbol from a first set of SBFD symbols included in a first set of SBFD configuration information and at least one WTRU-SBFD symbol from a second set of SBFD symbols included in a second set of SBFD configuration information. Step 604 may include the step of performing a link quality detection based on measurements on a DL RS resource, using at least one NN-SBFD symbol and / or at least one WTRU-SBFD symbol.

[0305] According to one embodiment of the present method, link quality detection is performed based on measurements on a DL RS resource using only one NN-SBFD symbol, and the method may include the step of performing a configured link recovery procedure, provided that the result of the link quality detection is below a first threshold.

[0306] According to one embodiment of the Method, link quality detection is performed based on measurements on a DL RS resource using only one WTRU-SBFD symbol, or further based on measurements on a DL RS resource using at least one NN-SBFD symbol, and provided that the result of the link quality detection is below a second threshold, the Method may include a step of reporting the result of the measurements on the DL RS resource using at least one WTRU-SBFD symbol to a network node, and therefore may include a step of updating a second set of SBFD configuration information.

[0307] According to one embodiment of the Method, link quality detection is performed based on measurements on a DL RS resource using only one WTRU-SBFD symbol, or further based on measurements on a DL RS resource using at least one NN-SBFD symbol, and provided that the result of the link quality detection is below a second threshold, the Method may include a step of reporting a decision to fall back the SBFD behavior of the WTRU in the network based on a second set of currently used SBFD symbols, following a first set of SBFD symbols.

[0308] According to one embodiment of this method, a second set of SBFD configuration information is included in the first SBFD configuration information received.

[0309] According to one embodiment of the present method, the second set of SBFD configuration information includes at least one of the following: frequency / time position information related to a second uplink (UL) subband (SB), information related to a second DL SB, and information related to a second guard band.

[0310] A wireless transceiver unit (WTRU) having at least one processor is also disclosed and described. The at least one processor is A first set of subband non-overlapping full-duplex (SBFD) configuration information related to the SBFD operation of network nodes (NNs) in the network is received. A second set of SBFD configuration information related to the SBFD operation of the WTRU in the network is received. The downlink reference signal (DL RS) resource for link quality detection is determined, and the DL RS resource spans at least one NN-SBFD symbol in the first set of SBFD symbols included in the first set of SBFD configuration information and at least one WTRU-SBFD symbol in the second set of SBFD symbols included in the second set of SBFD configuration information. The system may be configured to perform link quality detection based on measurements on DL RS resources using at least one NN-SBFD symbol and / or at least one WTRU-SBFD symbol.

[0311] According to one embodiment of the WTRU, at least one processor may be further configured to execute a configured link recovery procedure, provided that link quality detection is performed based on measurements on the DL RS resource using only at least one NN-SBFD symbol, and the result of the link quality detection is below a first threshold.

[0312] According to a further embodiment of the WTRU, at least one processor may be configured to perform link quality detection based on measurements on a DL RS resource using only at least one WTRU-SBFD symbol, or further based on measurements on a DL RS resource using at least one NN-SBFD symbol, and to report the results of the measurements on the DL RS resource using at least one WTRU-SBFD symbol to a network node, provided that the result of the link quality detection is below a second threshold, and thus update a second set of SBFD configuration information.

[0313] According to a further embodiment of the WTRU, at least one processor may be configured to report a decision to fall back the SBFD behavior of the WTRU on the network, based on a second set of currently used SBFD symbols following a first set of SBFD symbols, provided that link quality detection is performed based on measurements on a DL RS resource using only at least one WTRU-SBFD symbol, or further based on measurements on a DL RS resource using at least one NN-SBFD symbol, and the result of the link quality detection is below a second threshold.

[0314] According to further embodiments of the WTRU, a second set of SBFD configuration information may be included in the first SBFD configuration information received.

[0315] According to a further embodiment of the WTRU, a second set of SBFD configuration information is: Frequency / time position information related to the second uplink (UL) subband (SB), Information related to the second DL SB, and It may include at least one of the pieces of information related to the second guard band.

[0316] Figure 7 is a flowchart of Method 700 according to one embodiment. This method is performed by a WTRU in the network. This method specifies the operating mode of the WTRU in the network. Step (701) reports to the network the WTRU's ability to operate in subband (SB) non-duplication full-duplex (SBFD) mode in the network, Step (702) of receiving configuration information from the network that indicates at least an uplink (UL)SB, a first downlink (DL)SB, and a second DLSB, The steps include receiving a UL grant that schedules the transmission of a UL signal on at least a set of symbols (703), The procedure may include the step (704) of selecting a DL SB from the first DL SB and the second DL SB based on the frequency resources of the UL signal and at least one selection criterion, provided that the first DL signal and the second DL signal are each scheduled to be received through each of the first DL SB and the second DL SB on at least a set of symbols.

[0317] According to one embodiment of the present method, at least one selection criterion may include a first selection criterion, the first selection criterion may include selecting a DL SB from first and second DL SBs, the boundary of the DL SB selected from the first and second DL SBs having the largest resource block (RB) distance from the UL signal among the first and second DL SBs.

[0318] According to one embodiment of the present method, at least one selection criterion may include a second selection criterion, the second selection criterion may include selecting a primary or secondary DL SB from a first and a second DL SB, and the WTRU receives configuration information indicating which of the first and second DL SBs is the primary DL SB and which of the first and second DL SBs is the secondary DL SB.

[0319] According to one embodiment of the present method, at least one selection criterion may include a third selection criterion, the third selection criterion may include selecting a DL SB from a first and a second DL SB according to a prioritization rule based on the DL signal type.

[0320] According to one embodiment of this method, at least one of the first DL signal and the second DL signal can be received within a selected DL SB.

[0321] According to one embodiment of the present method, at least one other scheduled DL signal, other than at least one of the first DL signal and the second DL signal, may be received within a selected DL SB. The at least one other scheduled DL signal may be, for example, a physical downlink control channel (PDCCH) and a channel status information reference signal (CSI-RS).

[0322] According to one embodiment of this method, a second selection criterion may be applied when the first selection criterion cannot result in the selection of DL SB.

[0323] WTRUs within the network are also disclosed and described. Each WTRU comprises at least one processor. The WTRU capability of subband (SB) non-overlapping full-duplex (SBFD) operation of the WTRU in the network is reported to the network. The system receives configuration information from the network indicating at least an uplink (UL)SB, a first downlink (DL)SB, and a second DLSB. At least one UL grant is received that schedules the transmission of a UL signal on a set of symbols. The system may be configured to select a DL SB from the first DL SB and the second DL SB based on the frequency resources of the UL signal and at least one selection criterion, provided that the first DL signal and the second DL signal are each scheduled to be received via each of the first DL SB and the second DL SB on at least a set of symbols.

[0324] According to one embodiment of the WTRU, at least one selection criterion may include a first selection criterion, the first selection criterion may include selecting a DL SB from first and second DL SBs, the boundary of the DL SB selected from the first and second DL SBs having the largest resource block (RB) distance from the UL signal among the first and second DL SBs.

[0325] According to one embodiment of the WTRU, at least one selection criterion may include a second selection criterion, the second selection criterion may include selecting a primary or secondary DL SB from a first and a second DL SB, and the WTRU receives configuration information indicating which of the first and second DL SBs is the primary DL SB and which of the first and second DL SBs is the secondary DL SB.

[0326] According to one embodiment of the WTRU, at least one selection criterion may include a third selection criterion, the third selection criterion may include selecting a DL SB from a first and a second DL SB according to a prioritization rule based on the DL signal type.

[0327] According to one embodiment of the WTRU, at least one processor may be configured to receive at least one of a first DL signal and a second DL signal within a selected DL SB.

[0328] According to one embodiment of the WTRU, at least one processor may be configured to receive at least one other scheduled DL signal in a selected DL SB, other than at least one of the first DL signal and the second DL signal.

[0329] According to one embodiment of the WTRU, at least one processor may be configured to apply a second selection criterion when a first selection criterion cannot result in the selection of DL SB.

[0330] Figure 8 is a flowchart of Method 800 according to one embodiment. This method is performed by a WTRU in a network. Step (801) of receiving first configuration information from the network related to scheduling of UL channels / signals within the uplink (UL) subband (SB), Step (802) of receiving second configuration information from the network related to the scheduling of DL channels / signals within the downlink (DL)SB, Step (803) of determining from the received first and second configuration information that at least one symbol overlaps between the transmission of the UL channel / signal and the reception of the DL channel / signal, The steps may include (804) performing UL transmission adjustments for UL transmissions in at least one symbol determined to be duplicated based on at least one criterion.

[0331] According to one embodiment of the present method, at least one criterion may include a first criterion which may include the frequency gap between the resource block (RB) allocation of a DL channel / signal and the RB allocation of a UL channel / signal being less than a minimum RB gap value.

[0332] According to one embodiment of the present method, at least one criterion may include a second criterion, the second criterion may include a parameter / value representing spatial domain separation between DL channels / signals and UL channels / signals being less than a spatial domain threshold.

[0333] According to one embodiment of the present method, at least one criterion may include a third criterion, the third criterion may include the presence of an indicator showing the priority level on the UL channel / signal.

[0334] According to one embodiment of this method, the minimum RB gap value may be shown in the WTRU or configured as a WTRU configuration.

[0335] According to one embodiment of this method, the minimum RB gap value can be based on at least one parameter related to the minimum required frequency gap indicated by the WTRU.

[0336] According to one embodiment of this method, the minimum required frequency gap may be indicated by the WTRU as part of the WTRU capability information.

[0337] According to one embodiment of this method, the parameter / value may be based on the difference per spatial domain index between a first beam direction index for DL ​​channels / signals and a second beam direction index for UL channels / signals.

[0338] WTRUs within the network are also disclosed and described. Each WTRU comprises at least one processor. First configuration information related to the scheduling of UL channels / signals within the uplink (UL) subband (SB) is received from the network. Second configuration information related to the scheduling of DL channels / signals within the Downlink (DL)SB is received from the network. From the received first and second configuration information, it is determined that at least one symbol overlaps between the transmission of the UL channel / signal and the reception of the DL channel / signal. It may be configured to perform UL transmission adjustments for UL transmissions in at least one symbol determined to be duplicated based on at least one criterion.

[0339] According to one embodiment of the WTRU, at least one criterion may include a first criterion which may include the frequency gap between the resource block (RB) allocation of a DL channel / signal and the RB allocation of a UL channel / signal being less than a minimum RB gap value.

[0340] According to one embodiment of the WTRU, at least one criterion may include a second criterion, the second criterion may include a parameter / value representing spatial domain separation between DL channels / signals and UL channels / signals being less than a spatial domain threshold.

[0341] According to one embodiment of the WTRU, at least one criterion may include a third criterion, the third criterion may include the presence of an indicator showing the priority level on the UL channel / signal.

[0342] According to one embodiment of the WTRU, the minimum RB gap value may be shown in the WTRU or configured as part of the WTRU configuration.

[0343] According to one embodiment of the WTRU, the minimum RB gap value may be based on at least one parameter related to the minimum required frequency gap indicated by the WTRU.

[0344] According to one embodiment of the WTRU, the minimum required frequency gap may be indicated by the WTRU as part of the WTRU capability information.

[0345] According to one embodiment of WTRU, the parameter / value may be based on the difference per spatial domain index between a first beam direction index for DL ​​channels / signals and a second beam direction index for UL channels / signals.

[0346] Figure 9 is a flowchart of Method 900 according to one embodiment. This method is performed by a WTRU in the network. This method specifies the operating mode of the WTRU in the network. Step 901 receives a first subband non-overlapping full-duplex (SBFD) configuration indicating a first set of symbols, a first downlink subband (DL SB), and a first uplink subband (UL SB), wherein the first DL SB and the first UL SB are associated with the first set of symbols. Step 902: Receiving a second SBFD configuration indicating a second set of symbols, a second DL SB, and a second UL SB, wherein the second DL SB and the second UL SB are associated with the second set of symbols. In step 903, the steps include receiving configuration information for a resource associated with receiving a DL reference signal (DL RS), Step 904, for a resource, a step of determining a first subset of symbols and a second subset of symbols, wherein the first subset of symbols includes one or more symbols from the first set of symbols and excludes any symbols from the second set of symbols, and the second subset of symbols includes one or more symbols from the second set of symbols, Step 905 involves determining a first link quality based on measuring the DL RS in a first subset of symbols, and determining a second link quality based on measuring the DL RS in a second subset of symbols, In 906, the steps include reporting the first link quality and the second link quality, Step 907 may include sending a request to change the second SBFD configuration, provided that the second link quality is below a threshold.

[0347] According to one embodiment of this method, the first SBFD configuration is a network node or cell-specific SBFD configuration, and the second SBFD configuration is a WTRU-specific SBFD configuration.

[0348] According to one embodiment of this method, the second set of symbols is a subset of the first set of symbols.

[0349] According to one embodiment of this method, the second DL SB is located within the first DL SB, and the second UL SB is located within the first UL SB.

[0350] According to one embodiment of this method, the first link quality is based on receiving DL RS at the first DL SB, and the second link quality is based on receiving DL RS at the second DL SB.

[0351] According to one embodiment of this method, the WTRU receives DL RS on the second DL SB while transmitting UL on the second UL SB.

[0352] According to one embodiment of this method, the second SBFD configuration is Second UL SB related frequency / time position information, Information related to the second DL SB, It includes at least one piece of information related to the second guard band.

[0353] WTRUs within the network are also disclosed and described. Each WTRU comprises at least one processor. A first subband non-overlapping full-duplex (SBFD) configuration is received, indicating a first set of symbols, a first downlink subband (DL SB), and a first uplink subband (UL SB), and the first DL SB and the first UL SB are associated with the first set of symbols, A second SBFD configuration is received showing a second set of symbols, a second DL SB, and a second UL SB, and the second DL SB and the second UL SB are associated with the second set of symbols, Receive configuration information about the resource associated with receiving the DL reference signal (DL RS), Regarding the resource, determine a first subset of symbols and a second subset of symbols, the first subset of symbols containing one or more symbols from the first set of symbols and excluding any symbols from the second set of symbols, the second subset of symbols containing one or more symbols from the second set of symbols, The first link quality is determined based on measuring the DL RS in a first subset of symbols, and the second link quality is determined based on measuring the DL RS in a second subset of symbols. Report the first link quality and the second link quality. The system may be configured to send a request to change the second SBFD configuration under the condition that the second link quality is below a threshold.

[0354] According to one embodiment of the WTRU, the first SBFD configuration is a network node or cell-specific SBFD configuration, and the second SBFD configuration is a WTRU-specific SBFD configuration.

[0355] According to one embodiment of WTRU, the second set of symbols is a subset of the first set of symbols.

[0356] According to one embodiment of WTRU, the second DL SB is located within the first DL SB, and the second UL SB is located within the first UL SB.

[0357] According to one embodiment of the WTRU, the first link quality is based on receiving DL RS in the first DL SB, and the second link quality is based on receiving DL RS in the second DL SB.

[0358] According to one embodiment of the WTRU, at least one processor is configured to receive DL RS on a second DL SB while transmitting UL on a second UL SB.

[0359] According to one embodiment of WTRU, the second SBFD configuration is: Second UL SB related frequency / time position information, Information related to the second DL SB, and It includes at least one piece of information related to the second guard band.

[0360] While features and elements are provided above in specific combinations, those skilled in the art will understand that each feature or element may be used alone or in any combination with other features and elements. This disclosure should not be limited to the specific embodiments described herein, which are intended as illustrative examples of various aspects. Many modifications and variations may be made without departing from the spirit and scope, as will be apparent to those skilled in the art. Elements, operations, or instructions used in the description of this application should not be construed as important or essential to the invention unless expressly provided so. In addition to those enumerated herein, functionally equivalent methods and apparatus within the scope of this disclosure will be apparent to those skilled in the art from the foregoing description. Such modifications and variations are intended to fall within the scope of the appended claims. This disclosure should be limited only by the terms of such claims, together with the entire scope of equivalents to which the appended claims are entitled. It should be understood that this disclosure is not limited to any particular method or system.

[0361] For simplicity, the embodiments described above have been discussed in terms of the terminology and structure of wireless communication-enabled devices (e.g., radio emitters and receivers). However, the embodiments discussed are not limited to these systems and may be applied to other systems using other forms of electromagnetic waves or non-electromagnetic waves such as sound waves.

[0362] It should also be understood that the terms used herein are intended solely to describe specific embodiments and are not intended to limit them. The terms “video” or “image” as used herein may mean a snapshot, a single image, and / or multiple images displayed on a time basis. As another example, when referred to herein, the terms “user equipment” and its abbreviation “WTRU,” the term “remote,” and / or the terms “head-mounted display” or its abbreviation “HMD” may mean or include (i) a wireless transmit and / or receive unit (WTRU), (ii) any of several embodiments of a WTRU, (iii) a wireless-enabled and / or wired (e.g., tetherable) device consisting of some or all of the structures and functions of a WTRU, (iv) a wireless-enabled and / or wired device consisting of fewer structures and functions than all of a WTRU, or (v) similar. Details of exemplary WTRUs that may represent any WTRU enumerated herein are provided herein with respect to Figures 1A to 1D. As another embodiment, the various embodiments disclosed above and below in this specification are described as utilizing a head-mounted display. Those skilled in the art will recognize that devices other than head-mounted displays may be used, and that some or all of the present disclosure and the various disclosed embodiments may be modified accordingly without excessive experimentation. Examples of such other devices may include drones or other devices configured to stream information for providing an adapted reality experience.

[0363] In addition, the methods provided herein may be implemented in computer programs, software, or firmware embedded in computer-readable media for execution by a computer or processor. Examples of computer-readable media include electronic signals (transmitted via wired or wireless connections) and computer-readable storage media. Examples of computer-readable storage media include, but are not limited to, read-only memory (ROM), random access memory (RAM), registers, cache memory, semiconductor memory devices, magnetic media such as internal hard disks and removable disks, magneto-optical media, and optical media such as CD-ROM disks and digital multipurpose disks (DVDs). A processor associated with the software may be used to implement a radio frequency transceiver for use in a WTRU, WTRU terminal, base station, RNC, or any host computer.

[0364] Modifications of the methods, apparatus, and systems provided above are possible without departing from the scope of the present invention. Given the wide variety of embodiments to which they may be applied, it should be understood that the illustrated embodiments are merely examples and should not be construed as limiting the scope of the following claims. For example, embodiments provided herein include a handheld device that includes, or can be used with, any suitable voltage source, such as a battery, providing any suitable voltage.

[0365] Furthermore, the embodiments provided above also illustrate other devices, including processing platforms, computing systems, controllers, and processors. These devices may include at least one central processing unit ("CPU") and memory. In accordance with the practice of those skilled in computer programming, references to acts and symbolic representations of actions or instructions may be performed by various CPUs and memories. Such acts and actions or instructions may be referred to as "executed," "computer-executed," or "CPU-executed."

[0366] Those skilled in the art will understand that actions and symbolically represented operations or instructions involve the manipulation of electrical signals by the CPU. The electrical system causes the resulting transformation or reduction of electrical signals and the preservation of data bits at memory locations within the memory system, thereby reconfiguring or otherwise altering the CPU's operation and other processing of the signals. The memory locations where the data bits are preserved are physical locations having specific electrical, magnetic, optical, or organic properties corresponding to or representing the data bits. It should be understood that the embodiments are not limited to the platforms or CPUs described above, and other platforms and CPUs may support the methods provided.

[0367] Data bits may also be maintained on computer-readable media, including magnetic disks, optical disks, and any other volatile (e.g., random access memory (RAM)) or non-volatile (e.g., read-only memory (ROM)) mass storage systems readable by the CPU. Computer-readable media may include collaborative or interconnected computer-readable media that reside exclusively on a processing system or are distributed among multiple interconnected processing systems, which may be local or remote to the processing system. It should be understood that embodiments are not limited to the memory described above, and other platforms and memories may support the methods provided.

[0368] In illustrative embodiments, any of the operations, processes, etc., described herein may be implemented as computer-readable instructions stored on a computer-readable medium. These computer-readable instructions may be executed by a processor in a mobile unit, a network element, and / or any other computing device.

[0369] There is little distinction between hardware and software implementations of a system configuration. The use of hardware or software is generally (but not always) a design choice representing a cost-effectiveness trade-off, in that in certain situations the choice between hardware and software may be important. There may be various means (e.g., hardware, software, and / or firmware) by which the processes and / or systems and / or other technologies described herein can be implemented, and the preferred means may vary depending on the context in which the processes and / or systems and / or other technologies are deployed. For example, if the implementer determines that speed and accuracy are paramount, the implementer may choose primarily hardware and / or firmware means. If flexibility is paramount, the implementer may choose primarily software implementation. Alternatively, the implementer may choose any combination of hardware, software, and / or firmware.

[0370] The detailed description above illustrates various embodiments of devices and / or processes through the use of block diagrams, flowcharts, and / or examples. To the extent that such block diagrams, flowcharts, and / or examples include one or more functions and / or operations, it will be understood by those skilled in the art that each function and / or operation within such block diagrams, flowcharts, or examples can be implemented individually and / or collectively by a wide range of hardware, software, firmware, or substantially any combination thereof. In one embodiment, several parts of the subject matter described herein may be implemented via application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and / or other integrated formats. However, a person skilled in the art will recognize that some aspects of the embodiments disclosed herein may be equivalently implemented on an integrated circuit, in whole or in part, as one or more computer programs running on one or more computers (e.g., as one or more programs running on one or more computer systems), as one or more programs running on one or more processors (e.g., as one or more programs running on one or more microprocessors), as firmware, or substantially any combination thereof, and that designing circuits and / or writing software and / or firmware code is within the scope of the skills of a person skilled in the art in light of this disclosure. In addition, a person skilled in the art will understand that mechanisms of the subject matter described herein may be distributed as program products in various forms, and that illustrative embodiments of the subject matter described herein apply regardless of the particular type of signal-carrying medium used to actually carry out the distribution.Examples of signal-carrying media include, but are not limited to, recordable media such as floppy disks, hard disk drives, CDs, DVDs, digital tapes, and computer memory, as well as transmitting media such as digital and / or analog communication media (e.g., fiber optic cables, waveguides, wired communication links, wireless communication links, etc.).

[0371] Those skilled in the art will recognize that it is common in the art to describe devices and / or processes in the manner described herein and then use engineering techniques to integrate such described devices and / or processes into a data processing system. That is, at least some of the devices and / or processes described herein can be integrated into a data processing system through a reasonable amount of experimentation. Those skilled in the art will recognize that a typical data processing system may generally include one or more of the following: a system unit housing, a video display device, memory such as volatile and non-volatile memory, a processor such as a microprocessor and a digital signal processor, computing entities such as an operating system, drivers, a graphical user interface, and application programs, one or more interaction devices such as a touchpad or screen, and / or control systems including feedback loops and control motors (e.g., feedback for sensing position and / or speed, control motors for moving and / or adjusting components and / or quantities). A typical data processing system may be implemented using any suitable commercially available components, such as those typically found in data computing / communication and / or network computing / communication systems.

[0372] The subjects described herein may include different components contained within or connected to other different components. It should be understood that the architectures shown in this manner are merely examples, and in practice, many other architectures can be implemented to achieve the same function. Conceptually, any arrangement of components to achieve the same function is effectively “associated” in such a way that the desired function can be achieved. Thus, any two components combined herein to achieve a particular function, regardless of architecture or intermediate components, can be considered “associated” with each other in such a way that the desired function can be achieved. Similarly, any two components thus associated may be considered “operably connected” or “operably coupled” with each other to achieve the desired function, and any two components that can be associated in this way may be considered “operably coupled” with each other to achieve the desired function. Specific examples of operatically coupled components include, but are not limited to, physically matable and / or physically interacting components, and / or wirelessly interactable and / or wirelessly interacting components, and / or logically interacting and / or logically interactable components.

[0373] With regard to the use of substantially any plural and / or singular terms herein, a person skilled in the art may convert from plural to singular and / or singular to plural as appropriate to the context and / or use. Various singular / plural substitutions may be explicitly stated herein for clarity.

[0374] In general, the terms used herein, in particular in the appended claims (e.g., the text of the appended claims), will be understood by those skilled in the art to be generally intended as “open” terms (for example, the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “at least having,” and the term “includes” should be interpreted as “including but not limited to,” etc.). If a specific number is intended to be described in an introduced claim, such intent will be explicitly stated in that claim, and if such statement is not present, such intent does not exist, will be understood by those skilled in the art to further understand. For example, if only one item is intended, the term “single” or similar language may be used. For the sake of understanding, the following appended claims and / or description herein may include the use of the introductory phrases “at least one” and “one or more” to introduce the description of a claim. However, the use of such phrases should not be interpreted as meaning that the introduction of a claim description by the indefinite article "a" or "an" limits any particular claim containing such introduced claim description to embodiments containing only one such description, even if the same claim contains the introducing phrase "one or more" or "at least one" and an indefinite article such as "a" or "an" (for example, "a" and / or "an" should be interpreted as meaning "at least one" or "one or more"). The same applies to the use of definite articles used to introduce claim descriptions. In addition, even if a particular number of introduced claim descriptions is explicitly stated, a person skilled in the art will recognize that such a description should be interpreted as meaning at least the number stated (for example, the mere statement "two descriptions" without other modifiers means at least two descriptions, or two or more descriptions).Furthermore, when a convention similar to "at least one of A, B, and C, etc." is used, such configurations are generally intended in a sense that a person skilled in the art would understand the convention (for example, "a system having at least one of A, B, and C" includes, but is not limited to, systems having only A, only B, only C, A and B together, A and C together, B and C together, and / or systems having A, B, and C together). It will be further understood by those skilled in the art that any substantially separate words and / or phrases presenting two or more alternative terms, wherever they appear in the specification, claims, or drawings, should be understood as construing the possibility of including one of those terms, either of those terms, or both of those terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.” Furthermore, as used herein, the term “any of” followed by an enumeration of multiple items and / or multiple categories of items is intended to include “any of,” “any combination of,” “any multiple of,” and / or “any combination of multiples of,” the items and / or categories of items, individually or in conjunction with other items and / or other categories of items. Furthermore, as used herein, the term “set” is intended to include any number of items, including zero. Furthermore, as used herein, the term “number” is intended to include any number, including zero. The term “plural” is intended to be synonymous with “plural” as used herein.

[0375] Furthermore, where any feature or aspect of this disclosure is described in relation to the Markush Group, a person skilled in the art will recognize that this disclosure also describes any individual member or subgroup of a member of the Markush Group.

[0376] For any and all purposes, including providing written explanations, as will be understood by those skilled in the art, all scopes disclosed herein also encompass any and all possible subscopes and combinations thereof. Any enumerated scope can be readily recognized as one that fully explains and enables that the same scope may be divided into at least equal halves, thirds, quarters, fifths, tenths, etc. As a non-limiting example, each scope discussed herein can be readily divided into lower thirds, middle thirds, upper thirds, etc. Also, as will be understood by those skilled in the art, all language such as “maximum,” “at least,” “greater than,” and “less than” refers to a scope that includes the stated number and can be later divided into subscopes as described above. Finally, as will be understood by those skilled in the art, a scope includes each individual member. Thus, for example, a group having 1 to 3 cells refers to a group having 1, 2, or 3 cells. Similarly, a group having 1 to 5 cells refers to a group having 1, 2, 3, 4, or 5 cells, and so on.

[0377] Furthermore, unless otherwise stated, the claims should not be interpreted as being limited to the order or elements provided. In addition, the use of the term “means for” in any claim is intended to exercise 35 U.S. SC § 112, paragraph 6, or means-plus-function claim form, and any claim without the term “means for” is not intended to do so.

Claims

1. A method implemented by a wireless transceiver unit (WTRU) in a network, wherein the operation of the WTRU in the network is as follows: Receiving a first subband non-overlapping full-duplex (SBFD) configuration representing a first set of symbols, a first downlink subband (DL SB), and a first uplink subband (UL SB), wherein the first DL SB and the first UL SB are associated with the first set of symbols, Receiving a second SBFD configuration indicating a second set of symbols, a second downlink subband (DL SB), and a second uplink subband (UL SB), wherein the second DL SB and the second UL SB are associated with the second set of symbols, Receiving configuration information for resources associated with receiving DL reference signals (DL RS), Determining a first subset of symbols and a second subset of symbols for the aforementioned resource, wherein the first subset of symbols includes one or more symbols from the first set of symbols and excludes any symbols from the second set of symbols, and the second subset of symbols includes one or more symbols from the second set of symbols. The first link quality is determined based on measuring the DLRS in a first subset of the symbols, and the second link quality is determined based on measuring the DLRS in a second subset of the symbols. To report the first link quality and the second link quality, Under the condition that the second link quality is below a threshold, a request is sent to change the second SBFD configuration. Methods that include...

2. The method according to claim 1, wherein the first SBFD configuration is a network node or cell-specific SBFD configuration, and the second SBFD configuration is a WTRU-specific SBFD configuration.

3. The method according to claim 1, wherein the second set of symbols is a subset of the first set of symbols.

4. The method according to claim 1, wherein the second DL SB is located within the first DL SB, and the second UL SB is located within the first UL SB.

5. The method according to claim 1, wherein the first link quality is based on the reception of the DL RS in the first DL SB, and the second link quality is based on the reception of the DL RS in the second DL SB.

6. The method according to claim 1, wherein the WTRU receives the DL RS in the second DL SB and transmits the UL transmission in the second UL SB.

7. The second SBFD configuration described above is: Second UL SB related frequency / time position information, Information related to the second DL SB, and Information related to the second guard band The method according to claim 1, comprising at least one of the following.

8. A wireless transceiver unit (WTRU) having at least one processor, wherein the at least one processor is Receiving a first subband non-overlapping full-duplex (SBFD) configuration representing a first set of symbols, a first downlink subband (DL SB), and a first uplink subband (UL SB), wherein the first DL SB and the first UL SB are associated with the first set of symbols, Receiving a second SBFD configuration indicating a second set of symbols, a second downlink subband (DL SB), and a second uplink subband (UL SB), wherein the second DL SB and the second UL SB are associated with the second set of symbols, Receiving configuration information for resources associated with receiving DL reference signals (DL RS), Determining a first subset of symbols and a second subset of symbols for the aforementioned resource, wherein the first subset of symbols includes one or more symbols from the first set of symbols and excludes any symbols from the second set of symbols, and the second subset of symbols includes one or more symbols from the second set of symbols. The first link quality is determined based on measuring the DLRS in a first subset of the symbols, and the second link quality is determined based on measuring the DLRS in a second subset of the symbols. To report the first link quality and the second link quality, Under the condition that the second link quality is below a threshold, a request is sent to change the second SBFD configuration. WTRU is configured to perform the following actions.

9. The WTRU according to claim 8, wherein the first SBFD configuration is a network node or cell-specific SBFD configuration, and the second SBFD configuration is a WTRU-specific SBFD configuration.

10. The WTRU according to claim 8, wherein the second set of symbols is a subset of the first set of symbols.

11. The WTRU according to claim 8, wherein the second DL SB is located within the first DL SB, and the second UL SB is located within the first UL SB.

12. The WTRU according to claim 8, wherein the first link quality is based on the reception of the DL RS in the first DL SB, and the second link quality is based on the reception of the DL RS in the second DL SB.

13. The WTRU according to claim 8, wherein the at least one processor is configured to receive the DL RS in the second DL SB and transmit the UL transmission in the second UL SB.

14. The second SBFD configuration described above is: Second UL SB related frequency / time position information, Information related to the second DL SB, and Information related to the second guard band The WTRU according to claim 8, comprising at least one of the following.

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