Method for relating aperiodic SRS transmission and crosslink interference (CLI) measurements in subband non-overlapping full-duplex (SBFD) systems

Abstract

A wireless transceiver unit (WTRU) can receive configuration information associated with a sounding reference signal (SRS) resource. The WTRU can receive indications for receiving and / or measuring SRS transmissions in one of one or more SRS resources, and / or measure cross-link interference (CLI). SRS resources may be associated with time. The WTRU can determine a timing offset associated with an SRS transmission. Based on the time and / or timing offset associated with the SRS resource, the WTRU can determine a time and / or time window for receiving an SRS transmission. The WTRU can receive an SRS transmission based on the time and / or time window. An SRS transmission may be transmitted by a second WTRU. The WTRU can perform measurements on an SRS transmission. The WTRU can send a message containing indications of the measurements to a network node.

Description

Technical Field

[0001] (Cross - reference to Related Applications) This application claims the priority of U.S. Provisional Patent Application No. 63 / 465,109, filed on May 9, 2023, the entire content of which is incorporated herein by reference.

Background Art

[0002] The new radio (NR) multiplexing operation can be implemented to improve time - division duplexing (TDD) operation by extending uplink (UL) coverage, improving capacity, reducing latency, and / or otherwise improving time - division duplexing (TDD) operation. TDD can be based on dividing the time domain between the uplink and the downlink. As described herein, the possibility of enabling full duplex, more specifically sub - band non - overlapping full duplex (SBFD) in a gNB within the TDD band can be provided.

Summary of the Invention

[0003] The systems, methods, and apparatuses provided herein can include aperiodic sounding reference signal (SRS) transmission and / or aperiodic channel state information (CSI) measurement at a victim wireless transmit - receive unit (WTRU), aperiodic SRS transmission at an aggressor WTRU, hierarchical SRS configuration and / or cross - link interference (CLI) measurement via one or more shared resources, and / or association of group SRS transmission from one or more aggressor WTRUs via one or more shared resources.

[0004] A first wireless transceiver unit (WTRU) can receive configuration information associated with one or more sounding reference signal (SRS) resources. The first WTRU can receive indications for receiving and / or measuring SRS transmissions in one of the one or more SRS resources, and / or measuring cross-link interference (CLI). SRS resources are associated with time. The first WTRU can determine a timing offset associated with an SRS transmission. The first WTRU can determine a time or time window for receiving an SRS transmission, for example, based on the time and / or timing offset associated with the SRS resource. The first WTRU can receive an SRS transmission, for example, based on time and / or a time window. SRS transmissions may be transmitted by a second WTRU. The first WTRU can perform one or more measurements on an SRS transmission. The first WTRU can send a message to a network node. The message may include indications for one or more measurements.

[0005] The timing offset may be a timing advance (TA) for receiving an SRS transmission from a second WTRU, separate from the TA used by the WTRU to transmit an uplink (UL) transmission. The timing offset may be a delta offset value. The delta offset value may indicate the number of TA instances relative to the TA value of the first WTRU's UL transmission. One or more measurements may include inter-WTRU CLI based on the received SRS transmission. The inter-WTRU CLI may include SRS reference signal received power (SRS-RSRP) and / or CLI received signal strength indicator (CLI-RSSI) in the UL subband and / or downlink (DL) subband, respectively.

[0006] The first WTRU can receive SRS repetition information. Based on the SRS repetitions, the first WTRU can measure repeated SRS transmissions. Determination of the timing offset associated with an SRS transmission can be done based on the reception of the timing offset associated with the SRS transmission. The first WTRU can determine a second timing offset based on when the first WTRU received the SRS transmission within a time window and the time of the SRS resource. The first WTRU can send a report to a network node. The report may include measured cross-link interference (CLI) values ​​and / or the second timing offset. Performing one or more measurements may include the first WTRU performing one or more aperiodic measurements based on one or more aperiodic SRS. [Brief explanation of the drawing]

[0007] [Figure 1A] This is a system diagram showing an exemplary communication system in which one or more disclosed embodiments may be implemented. [Figure 1B] This is a system diagram showing an exemplary wireless transceiver unit (WTRU) that may be used in the communication system shown in Figure 1A, according to one embodiment. [Figure 1C] This is a system diagram showing an exemplary radio access network (RAN) and an exemplary core network (CN) that may be used in the communication system shown in Figure 1A, according to one embodiment. [Figure 1D] This is a system diagram showing further exemplary RANs and CNs that may be used in the communication system shown in Figure 1A according to one embodiment. [Figure 2] This figure shows an example of a subband non-overlapping full-duplex (SBFD) configuration in a time-division duplex (TDD) framework. [Figure 3]This figure shows an example of a scheduled WTRU in the uplink (UL) subband and / or downlink (DL) subband within an exemplary SBFD symbol. [Figure 4] This figure shows an example of channel state interference-reference signal CSI-RS resource mapping, where the parameters may be just an example. [Figure 5] This figure shows an example of a sounding reference signal (SRS) received from one or more Aggressor Radio Transceiver Units (WTRUs) with one or more different timing advance offsets. [Modes for carrying out the invention]

[0008] Figure 1A shows an exemplary communication system 100 that can implement one or more disclosed embodiments. The communication system 100 may be a multiple access system that provides content such as voice, data, video, messaging, and broadcast to multiple radio users. The communication system 100 may enable multiple radio users to access such content through the sharing of system resources, including radio bandwidth. For example, the communication system 100 may employ one or more channel access methods such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), quadrature FDMA (OFDMA), single-carrier FDMA (SC-FDMA), zero-tail unique word DFT spread OFDM (ZT UW DTS-s OFDM), unique word OFDM (UW-OFDM), resource block filtered OFDM, and filter bank multicarrier (FBMC).

[0009] As shown in Figure 1A, the communication system 100 may include wireless transceiver units (WTRUs) 102a, 102b, 102c, and 102d, RAN 104 / 113, CN 106 / 115, public switched telephone network (PSTN) 108, the Internet 110, and other networks 112, but it will be understood that the disclosed embodiments assume 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 these may be configured to transmit and / or receive radio signals and may include user equipment (UEs), mobile stations, fixed or mobile subscriber units, subscription-based units, pagers, cellular telephones, personal digital assistants (PDAs), smartphones, laptops, notebooks, personal computers, radio sensors, hotspots or Mi-Fi devices, IoT devices, watches or other wearables, head-mounted displays (HMDs), vehicles, drones, medical equipment and applications (e.g., remote surgery), industrial devices and applications (e.g., robots and / or other radio devices operating in the context of industrial and / or automated processing chains), consumer electronic devices, and devices operating on commercial and / or industrial radio networks. WTRU102a, 102b, 102c, and 102d may all be referred to interchangeably as WTRUs.

[0010] 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 other networks 112. For example, base stations 114a and 114b may be a transceiver base station (BTS), NodeB, eNodeB (eNB), home NodeB, home eNodeB, gNodeB (gNB), NR NodeB, site controller, access point (AP), wireless router, etc. Although base stations 114a and 114b are each depicted as single elements, it will be understood that base stations 114a and 114b may include any number of interconnected base stations and / or network elements.

[0011] 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 base station controllers (BSCs), radio network controllers (RNCs), and relay nodes. Base station 114a and / or base station 114b may be configured to transmit and / or receive radio signals on one or more carrier frequencies which may be called cells (not shown). These frequencies may be licensed spectra, unlicensed spectra, or combinations of licensed and unlicensed spectra. Cells can provide coverage for radio services in a particular geographic area which may be relatively fixed or may change over time. Cells 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 transceiver for each sector of the cell. In one embodiment, the base station 114a may employ multiple-input multiple-output (MIMO) technology and utilize multiple transceivers for each sector of the cell. For example, beamforming may be used to transmit and / or receive signals in a desired spatial direction.

[0012] Base stations 114a, 114b may communicate with one or more WTRUs 102a, 102b, 102c, 102d via an air interface 116 which may be any suitable radio 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).

[0013] More specifically, as described above, the communication system 100 may be a multiple access system and may employ 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 Telecommunications System (UMTS) Terrestrial Radio Access (UTRA) that can establish air interfaces 115 / 116 / 117 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 (DL) Packet Access (HSDPA) and / or High Speed ​​UL Packet Access (HSUPA).

[0014] In one embodiment, base stations 114a and WTRUs 102a, 102b, and 102c can implement radio technologies such as Advanced UMTS Terrestrial Radio Access (E-UTRA), which 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).

[0015] In one embodiment, the base station 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).

[0016] In one embodiment, base station 114a and WTRU 102a, 102b, 102c can implement multiple radio access technologies. For example, base station 114a and WTRU 102a, 102b, 102c can implement LTE radio access and NR radio access together, for example, using the dual connectivity (DC) principle. Thus, the air interface utilized by WTRU 102a, 102b, 102c may be characterized by transmissions between multiple types of radio access technologies and / or multiple types of base stations (e.g., eNB and gNB).

[0017] In other embodiments, base stations 114a and WTRUs 102a, 102b, and 102c may implement wireless technologies such as IEEE 802.11 (i.e., WiFi (Wireless Fidelity)), IEEE 802.16 (i.e., WiMAX (Worldwide Interoperability for Microwave Access)), CDMA2000, CDMA2000 1X, CDMA2000 EV-DO, Provisional Standard 2000 (IS-2000), Provisional Standard 95 (IS-95), Provisional Standard 856 (IS-856), GSM (Registered Trademark) (Global System for Mobile communications), GSM Advanced High-Speed ​​Data Rate (EDGE), and GSM EDGE (GERAN).

[0018] In Figure 1A, base station 114b may be, for example, a wireless router, home NodeB, home eNodeB, or access point, and may utilize any suitable RAT to facilitate wireless connectivity in local areas such as workplaces, homes, vehicles, premises, industrial facilities, aerial corridors (for use by drones), roads, etc. In one embodiment, base station 114b and WTRU 102c, 102d may implement wireless technology such as IEEE 802.11 to establish a wireless local area network (WLAN). In one embodiment, base station 114b and WTRU 102c, 102d may implement wireless technology such as IEEE 802.15 to establish a wireless personal area network (WPAN). In another embodiment, base station 114b and WTRU 102c, 102d may utilize a cellular-based RAT (e.g., WCDMA, CDMA2000, GSM, LTE, LTE-A, LTE-A Pro, NR, etc.) to establish a picocell or femtocell. As shown in Figure 1A, base station 114b may have a direct connection to the internet 110. Therefore, base station 114b does not need to access the internet 110 via CN106 / 115.

[0019] RAN104 / 113 may communicate with CN106 / 115, which may be any type of network configured to provide voice, data, applications, and / or 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, fault tolerance requirements, reliability requirements, data throughput requirements, and mobility requirements. CN106 / 115 may provide call control, billing services, mobile location services, prepaid calling, internet connectivity, video distribution, 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 employing the same RAT as RAN104 / 113 or different RATs. 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) employing GSM, UMTS, CDMA2000, WiMAX, E-UTRA, or WiFi radio technology.

[0020] CN106 / 115 can also function as a gateway for WTRU102a, 102b, 102c, 102d to access PSTN108, the Internet 110, and / or other networks 112. PSTN108 may include a circuit-switched telephone network providing basic telephone services (POTS). The Internet 110 may include a global system of interconnected computer networks and devices using common communication protocols such as TCP, UDP, and / or IP in the TCP / IP Internet Protocol Suite. Network 112 may include wired and / or wireless 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 employ the same RAT as RAN104 / 113 or a different RAT.

[0021] Some or all of the WTRUs 102a, 102b, 102c, 102d in the communication system 100 may include multi-mode capabilities (e.g., the WTRUs 102a, 102b, 102c, 102d may include multiple transceivers for communicating with different wireless networks via different wireless links). For example, the WTRU 102c shown in FIG. 1A may be configured to communicate with a base station 114a that may employ a cellular-based wireless technology and with a base station 114b that may employ an IEEE 802 wireless technology.

[0022] FIG. 1B is a system diagram showing an example of the WTRU 102. As shown in FIG. 1B, the WTRU 102 may particularly include a processor 118, a transceiver 120, a transceiver element 122, a speaker / microphone 124, a keypad 126, a display / touchpad 128, a non-removable memory 130, a removable memory 132, a power supply 134, a GPS chipset 136, and / or other peripheral devices 138. It will be understood that the WTRU 102 may comprise any sub-combination of the foregoing elements while maintaining consistency with the embodiments.

[0023] 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, other types of integrated circuit (IC), a state machine, etc. The processor 118 may perform signal encoding, data processing, power control, input / output processing, and / or any other function that enables the WTRU 102 to operate in a wireless environment. The processor 118 may be coupled to the transceiver 120 which may be coupled to the transceiver element 122. Although the processor 118 and the transceiver 120 are shown as separate components in FIG. 1B, it will be understood that the processor 118 and the transceiver 120 may be integrated together in an electronic package or chip.

[0024] The transmitting / receiving element 122 may be configured to transmit and receive signals to and 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 yet another 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.

[0025] Although the transmitting / receiving element 122 is depicted as a single element in FIG. 1B, the WTRU 102 may include any number of transmitting / receiving elements 122. More specifically, the WTRU 102 may employ MIMO technology. Accordingly, in one embodiment, the WTRU 102 may include two or more transmitting / receiving elements 122 (e.g., multiple antennas) for transmitting and receiving wireless signals via the air interface 116.

[0026] The transceiver 120 may be configured to modulate signals to be transmitted by the transmitting / receiving element 122 and demodulate signals received by the transmitting / receiving element 122. As noted above, the WTRU 102 may have multimode capabilities. Accordingly, the transceiver 120 may include multiple transceivers to enable the WTRU 102 to communicate via multiple RATs such as, for example, NR and IEEE 802.11.

[0027] 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. Furthermore, the processor 118 may access information in 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 RAM, ROM, a hard disk, or any other type of memory storage device. Removable memory 132 may include a SIM card, a memory stick, a secure digital (SD) memory card, and the like. In other embodiments, the processor 118 may access and store data in memory that is not physically located on the WTRU 102, such as on a server or home computer (not shown).

[0028] The processor 118 may be configured to receive power from the power supply 134 and distribute and / or control power to other components in 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.

[0029] 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) about the current location of the WTRU 102. In addition to, or instead of, information from the GPS chipset 136, 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 preferred location determination method while maintaining consistency with the embodiment.

[0030] The processor 118 may also be coupled to other peripherals 138, which may include one or more software and / or hardware modules that provide additional features, functions, and / or wired or wireless connectivity. For example, peripherals 138 may include an accelerometer, e-compass, satellite transceiver, digital camera (for photos and / or videos), Universal Serial Bus (USB) port, vibration device, television transceiver, hands-free headset, Bluetooth® module, frequency modulation (FM) radio unit, digital music player, media player, video game player module, internet browser, virtual reality and / or augmented reality (VR / AR) device, activity tracker, etc. Peripherals 138 may include one or more sensors. The sensors may be one or more of the following: gyroscope, accelerometer, Hall effect sensor, magnetometer, orientation sensor, proximity sensor, temperature sensor, time sensor, geolocation sensor, altimeter, light sensor, touch sensor, magnetometer, barometer, gesture sensor, biosensor, and / or humidity sensor.

[0031] WTRU102 may include a full-duplex radio where the transmission and reception of some or all of the signal (e.g., related to a particular subframe for both UL (e.g., for transmission) and downlink (e.g., for reception)) may be in parallel and / or simultaneous. The full-duplex radio may include an interference management unit to reduce and / or substantially eliminate self-interference through signal processing via either hardware (e.g., chokes) or a processor (e.g., a separate processor (not shown) or processor 118). In one embodiment, WTRU102 may include a half-duplex radio for the transmission and reception of some or all of the signal (e.g., related to a particular subframe for either UL (e.g., for transmission) or downlink (e.g., for reception)).

[0032] Figure 1C is a system diagram showing RAN104 and CN106 according to one embodiment. As described above, RAN104 employs E-UTRA wireless technology and can communicate with WTRU102a, 102b, and 102c via the air interface 116. RAN104 may also communicate with CN106.

[0033] RAN104 may include eNode-B160a, 160b, and 160c, but it will be understood that RAN104 may include any number of eNode-B while maintaining consistency with the embodiment. Each of eNode-B160a, 160b, and 160c may be equipped with one or more transceivers for communicating with WTRU102a, 102b, and 102c via the air interface 116. In one embodiment, eNode-B160a, 160b, and 160c may implement MIMO technology. Thus, eNode-B160a may use multiple antennas, for example, to transmit a radio signal to and / or receive a radio signal from WTRU102a.

[0034] Each of the eNodeB160a, 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 in UL and / or DL, etc. As shown in Figure 1C, the eNodeB160a, 160b, and 160c may communicate with each other via the X2 interface.

[0035] 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 (or PGW) 166. Although each of the above elements is shown as part of CN106, it should be understood that any of these elements may be owned and / or operated by an entity other than the CN operator.

[0036] MME162 may be connected to each of the eNodeB160a, 160b, and 160c within RAN104 via the S1 interface and may act as a control node. For example, MME162 may be responsible for authenticating users of WTRU102a, 102b, and 102c, activating / deactivating bearers, and selecting a specific serving gateway during the initial attachment of WTRU102a, 102b, and 102c. MME162 may provide control plane functionality for switching between RAN104 and other RANs (not shown) employing other radio technologies such as GSM and / or WCDMA.

[0037] SGW164 may be connected to each of the e-nodes B160a, 160b, and 160c in RAN104 via the S1 interface. Generally, SGW164 can route and forward user data packets to and from WTRU102a, 102b, and 102c. SGW164 may perform other functions such as anchoring the user plane during handovers between e-nodes B, triggering paging when DL data is available to WTRU102a, 102b, and 102c, and managing and remembering the context of WTRU102a, 102b, and 102c.

[0038] SGW164 may be connected to PGW166, which can provide WTRU102a, 102b, and 102c with access to a packet-switched network such as the Internet 110 to facilitate communication between WTRU102a, 102b, and 102c and IP-enabled devices.

[0039] CN106 can facilitate communication with other networks. For example, CN106 may provide WTRU102a, 102b, and 102c with access to a circuit-switched network such as PSTN108 to facilitate communication between WTRU102a, 102b, and 102c and conventional fixed 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. Furthermore, CN106 can 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.

[0040] Although the WTRU is shown as a wireless terminal in Figures 1A to 1D, in some typical embodiments, such a terminal may use a wired communication interface with a communication network (for example, temporarily or permanently).

[0041] In a typical embodiment, the other network 112 may be a WLAN.

[0042] A WLAN in Infrastructure Basic Service Set (BSS) mode has an access point (AP) for the BSS and one or more stations (STAs) associated with the AP. The AP may have access to or interface to a distribution system (DS) or another type of wired / wireless network that carries traffic to and / or from the BSS. Traffic originating outside the BSS and destined for the STA may arrive through the AP and be sent to the STA. Traffic originating from the STA to destinations outside the BSS may be sent to the AP and delivered to their respective destinations. Traffic between STAs within the BSS can be transmitted through the AP, for example, a source STA may send traffic to the AP, and the AP may deliver the traffic to the destination STA. Traffic between STAs within the BSS may be considered or referred to as peer-to-peer traffic. Peer-to-peer traffic can be transmitted (e.g., directly) between a source STA and a destination STA using a Direct Link Setup (DLS). In certain typical embodiments, the DLS may be an 802.11e DLS or an 802.11z Tunnel DLS (TDLS). WLANs using Independent BSS (IBSS) mode may not have access points (APs), and STAs within or using IBSS (e.g., all STAs) may communicate directly with each other. The IBSS communication mode is sometimes referred to as the “ad-hoc” communication mode in this specification.

[0043] When using 802.11ac infrastructure mode or a similar operating mode, an AP can transmit beacons on a fixed channel, such as the primary channel. The primary channel can be of a fixed width (e.g., a wide bandwidth of 20 MHz) or a dynamically set width via signaling. The primary channel may be the operating channel of the BSS and may be used by the STA to establish a connection with the AP. In certain typical embodiments, a carrier-sensing multiple access / collision avoidance scheme (CSMA / CA) may be implemented, for example, in an 802.11 system. In the case of CSMA / CA, the STA, including the AP (e.g., all STAs), can sense the primary channel. If the primary channel is sensed / detected by a particular STA and / or determined to be busy, that particular STA can backoff. One STA (e.g., just one station) can transmit on a given BSS at any time.

[0044] High-throughput (HT) STAs can use a 40MHz wide channel for communication, for example, by combining a primary 20MHz channel with adjacent or non-adjacent 20MHz channels to form a 40MHz wide channel.

[0045] Very high-throughput (VHT) STAs can support channels with widths of 20 MHz, 40 MHz, 80 MHz, and / or 160 MHz. 40 MHz and / or 80 MHz channels can 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, the latter sometimes referred to as an 80+80 configuration. In the 80+80 configuration, the channel-coded data passes through a segment parser, which splits the data into two streams. Inverse fast Fourier transform (IFFT) processing and time-domain processing can be performed independently on each stream. The streams are mapped to two 80 MHz channels, and the data is transmitted by the transmitting STA. At the receiver of the receiving STA, the above operation for the 80+80 configuration can be reversed, and the combined data can be transmitted to the media access control (MAC).

[0046] 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 can support meter-type control / machine-type communications, such as MTC devices in a macro coverage area. MTC devices may have limited functionality, including support for specific and / or limited bandwidths (e.g., support only). MTC devices may include batteries with battery life exceeding a threshold (e.g., maintaining a very long battery life).

[0047] A WLAN system can support multiple channels and channel bandwidths, including 802.11n, 802.11ac, 802.11af, and 802.11ah, and this WLAN system includes a channel that can be designated as the primary channel. The bandwidth of the primary channel may be equal to the maximum common operating bandwidth supported by all STAs in the BSS. The bandwidth of the primary channel may be set and / or limited by an STA from among all STAs operating in a BSS that support the minimum bandwidth operating mode. In the 802.11ah example, even if the AP and other STAs in the BSS support operating modes of 2MHz, 4MHz, 8MHz, 16MHz, and / or other channel bandwidths, the primary channel of an STA (e.g., an MTC-type device) that supports (e.g., only supports) the 1MHz mode may be 1MHz wide. Carrier sensing 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, a large portion of the frequency band remains idle, and even if it were available, the entire available frequency band can be considered busy.

[0048] In the United States, the usable frequency band for 802.11ah is 902MHz to 928MHz. In South Korea, the usable frequency band is 917.5MHz to 923.5MHz. In Japan, the usable frequency band is 916.5MHz to 927.5MHz. The total usable bandwidth for 802.11ah is 6MHz to 26MHz, depending on the country code.

[0049] Figure 1D is a system diagram showing RAN113 and CN115 according to one embodiment. As described above, RAN113 can employ NR radio technology to communicate with WTRU102a, 102b, and 102c via the air interface 116. RAN113 may also communicate with CN115.

[0050] RAN113 may include gNB180a, 180b, and 180c, but it will be understood that RAN113 may include any number of gNBs while maintaining consistency 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 can implement MIMO technology. For example, gNB180a and 108b can transmit and / or receive signals to and from gNB180a, 180b, and 180c using beamforming. Thus, for example, gNB180a can transmit and / or receive radio signals to and from WTRU102a using multiple antennas. In one embodiment, gNB180a, 180b, and 180c can implement carrier aggregation technology. For example, gNB180a can transmit multiple component carriers to WTRU102a (not shown). A subset of these component carriers may be on the unlicensed spectrum, and the remaining component carriers may be on the licensed spectrum. In one embodiment, gNB180a, 180b, and 180c can implement Coordinated Multi-Point (CoMP) technology. For example, WTRU102a can receive coordinated transmissions from gNB180a and gNB180b (and / or gNB180c).

[0051] WTRU102a, 102b, and 102c can communicate with gNB180a, 180b, and 180c using transmissions associated with scalable numerology. For example, OFDM symbol spacing and / or OFDM subcarrier spacing may vary by different transmissions, different cells, and / or different parts of the radio transmission spectrum. WTRU102a, 102b, and 102c can communicate with gNB180a, 180b, and 180c using subframes or transmit time intervals (TTIs) of varying or scalable lengths (e.g., varying numbers of OFDM symbols and / or varying lengths of absolute time duration).

[0052] 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 utilize one or more 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 unlicensed bands. In a non-standalone configuration, WTRU102a, 102b, and 102c can communicate with gNB180a, 180b, and 180c while also communicating with other RANs such as eNode-B160a, 160b, and 160c. For example, WTRU102a, 102b, and 102c can implement the DC principle to communicate with one or more gNB180a, 180b, and 180c and one or more eNodes B160a, 160b, and 160c almost simultaneously. In a non-standalone configuration, eNodes B160a, 160b, and 160c can act as mobility anchors for WTRU102a, 102b, and 102c, and gNB180a, 180b, and 180c can provide additional coverage and / or throughput to service WTRU102a, 102b, and 102c.

[0053] 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, access to control plane information, and routing to mobility management functions (AMF) 182a and 182b. As shown in Figure 1D, the gNB180a, 180b, and 180c can communicate with each other via the Xn interface.

[0054] 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 optionally a 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.

[0055] AMF 182a, 182b may be connected to one or more gNB180a, 180b, 180c in RAN113 via the N2 interface and function as a control node. For example, AMF182a, 182b may be responsible for user authentication of WTRU102a, 102b, 102c, support for network slicing (e.g., handling different PDU sessions with different requirements), selection of specific SMF183a, 183b, management of registration areas, termination of NAS signaling, mobility management, etc. Network slicing may be used by AMF182a, 182b to customize CN support for WTRU102a, 102b, 102c based on the type of service being utilized by WTRU102a, 102b, 102c. For example, various network slices can be established for various use cases, such as services that rely on ultra-high reliability low latency (URLLC) access, services that rely on extended large-scale mobile broadband (eMBB) access, and services for machine-type communications (MTC) access. The AMF162 may provide control plane functionality for switching between RAN113 and other RANs (not shown) that use other radio technologies such as LTE, LTE-A, LTE-A Pro, and / or non-3GPP access technologies such as WiFi.

[0056] SMF183a and 183b may be connected to AMF182a and 182b in CN115 via the N11 interface. SMF183a and 183b may 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 assigning WTRU IP addresses, managing PDU sessions, controlling policy enforcement and QoS, and providing downlink data notifications. PDU session types may be IP-based, non-IP-based, Ethernet®-based, etc.

[0057] UPF184a, 184b can be connected to one or more gNB180a, 180b, 180c in RAN113 via the N3 interface, which provides WTRU102a, 102b, 102c with access to packet-switched networks such as the Internet 110 and facilitates communication between WTRU102a, 102b, 102c and IP-enabled devices. UPF184, 184b can 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 anchors.

[0058] CN115 can facilitate communication with other networks. For example, CN115 may include, or communicate with, an IP gateway (e.g., an IP Multimedia Subsystem (IMS) server) that acts as an interface between CN115 and PSTN108. Furthermore, 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 local DN185a,185b through UPF184a,184b via an N3 interface to UPF184a,184b and an N6 interface between UPF184a,184b and data networks (DN)185a,185b.

[0059] With regard to Figures 1A to 1D and the corresponding descriptions therein, one or more, or all, of the functions described herein with respect to one or more of the WTRU102a to d, base stations 114a to b, e-nodes B160a to c, MME162, SGW164, PGW166, gNB180a to c, AMF182a to b, UPF184a to b, SMF183a to b, DN185a to b, and / or other devices described herein can be performed by one or more emulation devices (not shown). The emulation devices may be one or more devices configured to emulate one or more, or all, of the functions described herein. For example, emulation devices may be used to test other devices and / or to simulate network and / or WTRU functions.

[0060] Emulation devices can be designed to implement one or more tests of other devices in a lab environment and / or operator network environment. For example, one or more emulation devices can be fully or partially implemented and / or deployed as part of a wired and / or wireless network to perform one, more or all of its functions in order to test other devices in a communications network. One or more emulation devices can be temporarily implemented / deployed as part of a wired and / or wireless network to perform one, more or all of its functions. Emulation devices can be directly coupled to another device for testing purposes and / or can perform tests using wireless communication.

[0061] One or more emulation devices may perform one or more functions (including all functions) without being 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 lab and / or in a test scenario in a non-deployed (e.g., test) wired and / or wireless communication network to implement testing of one or more components. One or more emulation devices may be test equipment. Direct RF coupling and / or wireless communication via RF circuitry (e.g., which may have one or more antennas) may be used by the emulation device to transmit and / or receive data.

[0062] New Radio (NR) duplex operation may be included herein. NR duplex operation can improve time-division duplex (TDD) operation by extending uplink (UL) coverage, improving capacity, and reducing latency. TDD may be based on dividing the time domain between the uplink and downlink. Feasibility for enabling full-duplex and / or subband non-overlapping full-duplex (SBFD) in a gNB within the TDD band may be provided herein (e.g., Figure 2).

[0063] In TDD NR, cross-link interference-received signal strength indicator (CLI-RSSI) measurement and / or reporting may be based on using continuous time and / or frequency resources for CLI-RSSI measurement. Additionally or alternatively, a WTRU can measure CLI-RSSI in the bandwidth part (BWP) of an active downlink (DL) that may have adjacent DL resources. In the case of SBFD, a WTRU indicating UL transmission in the UL subband can cause a WTRU-to-WTRU CLI between WTRUs in the cell attempting to receive DL signals and / or channels in the DL subband. Figure 3 shows an example of different scheduled WTRUs in the UL and / or DL ​​subbands within an SBFD symbol.

[0064] Furthermore, in TDD NR, the CSI report may not consider the effects of inter-WTRU CLI in one or more reported metrics. Interference measurements may be (e.g., primarily) intra-cell cross-beam interference and / or inter-cell DL interference. As an extension of reusing the existing CSI framework, the CSI report may include how to capture the effects of inter-WTRU CLI in metrics, including the existing CSI reportQuantity and / or CSI feedback. In the case of inter-WTRU subband CLI measurements, the victim WTRU may measure at least one of the following: RSSI in the DL subband, the reference signal received power (RSRP) of the aggressor WTRU in the UL subband, and / or RSSI in the UL subband.

[0065] Measuring a one-to-one CLI between a victim WTRU and one or more aggressor WTRUs based on sounding reference signal (SRS) signaling may include one or more configurations regarding frequency and / or timing (see, e.g., Figure 4), transmit power, repetition, etc. Disclosing such configuration information to the victim WTRU and / or one or more aggressor WTRUs may increase overhead and / or latency. Therefore, extensions to the exchange of configuration information in SBFD WTRU inter-subband CLI measurements and / or reporting may be necessary.

[0066] Furthermore, one-to-one CLI measurements between a victim WTRU and one or more aggressor WTRUs based on SRS signaling can result in increased resource latency and / or usage. For example, one-to-one SRS transmit, receive, measure, and / or report may increase the latency for measuring inter-WTRU CLI. For example, measuring inter-WTRU CLI within configured resources may result in a WTRU being unable to perform transmit (Tx) and / or receive (Rx) within one or more adjacent resources due to strong CLI caused by one or more aggressor WTRUs and / or one or more gNBs, resulting in wasted resources for one or more (e.g., each) CLI measurements based on SRS signaling. Therefore, enhancements can be made to the procedure for measuring CLI signal strength.

[0067] The systems, methods, and apparatus provided herein may include the configuration, measurement, and / or reporting of inter-WTRU inter-subband CLIs based on SRS signaling in an SBFD configuration.

[0068] Embodiments described herein relate to the association of aperiodic SRS transmission and / or (e.g., aperiodic) CSI measurement in a victim WTRU. A first WTRU (e.g., a potential victim WTRU) can receive configuration information relating to one or more reference signal (RS) resources. For example, a first WTRU can receive configuration information associated with one or more sounding reference signal (SRS) resources. The term SRS may be used interchangeably with RS. An RS resource configuration may include a sequence of reference signals, time and / or frequency resources (e.g., orthogonal frequency division multiplexing (OFDM) symbols and / or subcarrier occupancy). RS may be based on SRS. A first WTRU can receive (e.g., via DCI and / or MAC CE (control element)) indications for receiving and / or measuring SRS (e.g., one or more) at each configured resource, and / or measuring (e.g., aperiodic) CLI (e.g., SRS-RSRP). For example, a first WTRU may receive an indication (e.g., a trigger) to receive and / or measure an SRS transmit signal within one or more SRS resources, and / or measure CLI. SRS resources may be associated with time. For example, for scheduling purposes, the indication and / or trigger for CLI measurement in the first (e.g., victim) WTRU may be from a gNB. Additionally, or alternatively, the trigger may be from one or more higher layers due to measured and / or detected low SNR and / or high BLER.

[0069] The first WTRU can dynamically receive (e.g., via DCI and / or MAC-CE) timing offsets (e.g., symbols and / or slot numbers) to apply when receiving and / or measuring RS (e.g., SRS). For example, the first WTRU can receive and / or determine the timing offset associated with an SRS transmission. The determination of the timing offset associated with an SRS transmission can be done, for example, based on the reception of the timing offset associated with the SRS transmission. The WTRU can receive configurations via Downlink Control Information (DCI) and / or MAC CE (medium access control control element) to determine the timing offset (e.g., timing advance offset (TAO)). For example, the WTRU can dynamically receive (e.g., the exact) value of the TAO applied with respect to the start time configured for receiving and / or measuring RS (e.g., SRS) (e.g., via DCI and / or MAC CE indications). The timing offset may be a timing advance (TA) for reception and / or may be separate from and / or different from a timing advance that the first WTRU may use for transmission. For example, the timing offset may be a TA for receiving an SRS transmission from a second WTRU, separate from the TA that the first WTRU uses for transmitting an uplink (UL) transmission. The timing offset may be a delta offset value (e.g., ±n). For example, the timing offset may be associated with the number of timing advance instances with respect to the configured transmit timing advance value of the first UE. For example, the delta value may represent one or more (e.g., several) TA instances with respect to the TA value of the first WTRU's UL transmission.

[0070] The first WTRU can determine the time and / or time window for receiving RS (e.g., SRS) based, for example, on the time and / or timing offset of the configured resource. For example, the first WTRU can determine the time and / or time window for receiving SRS transmissions. For example, the time and / or time window may include one or more (e.g., several) symbols. The first WTRU can determine the time and / or time window for receiving SRS transmissions based, for example, on the time and / or timing offset associated with the SRS resource.

[0071] A WTRU can receive configuration via Downlink Control Information (DCI) and / or MAC CE (medium access control control element) to determine the timing offset. For example, a WTRU can dynamically receive (e.g., the exact) value of TAO applied with respect to the start time configured to receive and / or measure RS (e.g., SRS) (e.g., via DCI and / or MAC CE indications). A first WTRU can receive SRS at or during a determined time and / or time window in which SRS may be transmitted by a second WTRU (e.g., an Aggressor WTRU). For example, a first WTRU can receive SRS transmissions based on time and / or time windows. SRS transmissions may be transmitted by a second WTRU.

[0072] The first WTRU can measure WTRU-to-WTRU CLI based on received SRS (e.g., SRS-RSRP and / or CLI-RSSI for the UL and / or DL ​​subbands, respectively). For example, the first WTRU can perform one or more measurements for an SRS transmission. The first WTRU can perform one or more aperiodic measurements based on one or more aperiodic SRSs. Reception of a timing offset can trigger the first WTRU to perform one or more measurements (e.g., aperiodic measurements). One or more measurements may include WTRU-to-WTRU CLI based on received SRS transmissions. The WTRU-to-WTRU CLI may include SRS-Reference Signal Received Power (SRS-RSRP) and / or CLI-Received Signal Strength Indicator (CLI-RSSI) for UL and / or Downlink (DL), respectively.

[0073] The first WTRU can measure and / or determine a second timing offset based, for example, when the WTRU receives an SRS within a time window and / or based on the time of the configured resource.

[0074] The first WTRU can report the measured CLI and / or a second timing offset to the gNB. For example, the first WTRU can send a message to a network node. The message may include indications of one or more measurements. For example, the first WTRU can send a report to a network node. The report may include the measured CLI value and / or a second timing offset.

[0075] This specification describes embodiments that provide repeating displays. A first WTRU can receive SRS repeating information. For example, the first WTRU can dynamically receive SRS repeating information (e.g., N) (e.g., via MAC-CE). The first WTRU can measure repeating SRS transmissions (e.g., N, e.g., transmitted from a second WTRU). For example, the first WTRU can measure repeating SRS transmissions based on SRS repeating information.

[0076] This specification describes embodiments that provide resource indication. A first WTRU can dynamically receive resources for SRS reception (e.g., via DCI, MAC-CE). For example, the first WTRU can be configured with candidate resources, and one candidate resource can be dynamically indicated (e.g., via DCI, MAC-CE) for use in measuring CLI. The first WTRU can monitor to receive SRS within the configured resources. Configured resources for receiving and / or measuring SRS can be identified as non-zero power (NZP), zero power (ZP), and / or muted resources. The first WTRU can measure the effect of SRS transmitted on one or more other resources within the configured resources (e.g., SRS-RSRP, SRS-CLI-RSSI) (e.g., the WTRU measures on DL SB based on SRS transmitted on UL subband (SB)).

[0077] Embodiments described herein relate to the processing of aperiodic SRS transmissions in an aggressor WTRU. A first WTRU (e.g., a potential aggressor WTRU) can receive configurations (e.g., including time and / or frequency resources in its serving cell) for one or more aperiodic SRS transmissions (e.g., within the UL SB of an SBFD configuration). For example, the first WTRU can receive configuration information associated with one or more SRS transmissions. For example, the first WTRU can receive configurations for one or more aperiodic SRS transmissions for CLI measurements in a second WTRU (e.g., a potential victim WTRU).

[0078] This specification describes embodiments relating to timing advance (TA). A first WTRU can receive an indication of which cell to use as the basis for timing and / or timing advance of an SRS transmission using the resources of its serving cell (e.g., and / or whether to use that serving cell and / or a different cell). For example, the first WTRU can receive an indication of the serving cell of a second WTRU used to determine the timing and / or timing advance of an SRS transmission. The indication may be based on a radio resource control (RRC) indication of a set of resources (e.g., for a serving cell and / or another cell). For example, the first WTRU can receive the indication via an RRC indication of a set of resources. The first WTRU can receive the indication via DCI and / or MAC CE. For example, the first WTRU can receive the indication via DCI / MAC-CE for selection from a set. The first WTRU can determine the time of the SRS transmission based on the indication. For example, a first WTRU can determine the time used for SRS transmission based on the same serving cell or a different / non-serving cell. Based on the same serving cell (e.g., if the victim WTRU and aggressor WTRU are in the same cell), the first WTRU can determine the time to transmit SRS based on the DL timing of that serving cell (e.g., timing advance information and / or commands (received from the gNB)). For example, based on the determination that the serving cell of a second WTRU is the same as the serving cell of the first WTRU, the first WTRU can determine the time to transmit SRS transmission based on the DL timing of the serving cell.

[0079] The timing advance may be a first type of timing advance used by the first WTRU for transmitting UL signals and / or channels (e.g., physical uplink control channel (PUCCH), physical uplink sharing channel (PUSCH), SRS, etc.), and / or the timing advance may be a second type of timing advance used by the first WTRU for transmitting SRS measured by the second WTRU. The first WTRU can receive configurations regarding the timing advance (e.g., via RRC, MAC-CE, and / or DCI). Based on different / non-serving cells (e.g., if the victim WTRU and aggressor WTRU are not in the same cell), the first WTRU may decide to transmit SRS based on the DL reference timing of the indicated cell (e.g., with the timing advance information (received from the gNB) added). For example, if the serving cell of the second WTRU is determined to be an adjacent cell of the first WTRU, the first WTRU may decide when to transmit an SRS transmission based on the DL timing of the adjacent cell. If the serving cell of the second WTRU is determined to be an adjacent cell of the first WTRU, the first WTRU can measure one or more DL RS from the adjacent cell to determine the DL timing. The timing advance may be a first type of timing advance used by the first WTRU for transmitting UL signals and / or UL channels (e.g., PUCCH, PUSCH, SRS, etc.), and / or the timing advance may be a second type of timing advance used by the first WTRU for transmitting SRS measured by the second WTRU. For example, the first WTRU can transmit an SRS transmission measured by the second WTRU based on the second timing advance. The timing advance for different / non-serving cells may be similar to or different from the timing advance that the first WTRU may use for transmission within the same serving cell. The WTRU can receive configurations regarding the timing advances (e.g., via RRC, MAC-CE, and / or DCI).

[0080] The first WTRU can determine DL timing by measuring one or more configured / indicated DL RS (e.g., SSB, CSI-RS, etc.) from an indicated cell, for example, for the purpose of this type of aperiodic SRS transmission. The first WTRU can transmit the SRS using the determined DL timing and / or timing advance (e.g., using the resources of its serving cell). For example, the first WTRU can transmit the SRS transmission based on the time determined to transmit the SRS transmission. For example, based on the timing advance that the first WTRU uses for UL transmission in the first WTRU's serving cell, the first WTRU can determine the time to transmit the SRS transmission.

[0081] The first WTRU may consist of a first SRS resource within the UL SB and / or a second SRS resource outside the UL SB (e.g., within the DL SB) (e.g., in an SBFD slot or other time unit). The first WTRU may determine, for example, whether the SRS transmit resource is within the UL SB and / or DL ​​SB (e.g., the first SRS resource or the second SRS resource, respectively), and, if the SRS transmit resource is within the UL SB, how close it is to the boundary of the UL SB, and / or whether to apply power adjustments to the SRS transmit. For example, the first WTRU may determine power adjustments to apply to the SRS transmit based on whether the SRS transmit resource is within the UL SB or DL ​​SB, and / or based on one or more power control (PC) related parameters. In the example, the first WTRU may receive a configuration of one or more power adjustment (e.g., backoff) values. For example, the first WTRU may receive one or more power adjustment values. The power adjustment values ​​may consist of one or more adjustment values. For example, when an SRS transmit resource may be located within a first SRS resource (e.g., UL SB), the first WTRU can perform an SRS transmit without applying one or more power adjustment values. The first WTRU can transmit an SRS without applying one or more adjustment values, and the SRS transmit resource may be located within a UL SB. For example, when an SRS transmit resource (e.g., one or more SRS transmit resources) is located within a second SRS resource (e.g., DL SB), the first WTRU can transmit an SRS by applying power adjustments to the transmit power, in which case the power adjustments are determined (e.g., from configured power adjustments) based on one or more of the frequency (e.g., resource block (RB)) distance between the boundary of the UL SB and the reference RB of the SRS resource, and / or the minimum frequency (e.g., RB) distance between the boundary of the UL SB and the RB of the SRS resource.For example, a first WTRU can transmit an SRS transmission based on one or more of the frequency distance between the boundary of the UL SB and the reference RB of the SRS resource, and the minimum frequency distance between the boundary of the UL SB and the RB of the SRS resource, and the SRS transmission resource may be contained within the DL SB.

[0082] Embodiments described herein may relate to hierarchical SRS configurations and / or CLI measurements across one or more shared resources. A first WTRU can receive configuration information including an indication that the first WTRU will measure one or more CLI measurements on time and / or frequency resources associated with one or more (e.g., multiple) SRS transmissions. For example, a first WTRU (e.g., a victim WTRU) can receive a configuration for measuring and / or reporting CLI (e.g., SRS-CLI-RSSI). For example, a first WTRU can receive a configuration for measuring and / or reporting CLI on a DL SB. The CLI measurements may include SRS-CLI-RSRP measurements and / or SRS-CLI-RSSI measurements. The configuration may include time and / or frequency resources on which one or more SRS transmissions (e.g., transmissions from one or more second (aggressor) WTRUs) using one or more sequences can be received and / or measured by the first WTRU.

[0083] One or more SRS transmissions using one or more sequences can be received and / or measured by a first WTRU at the same (e.g., and / or overlapping) time and / or frequency resources (e.g., group SRS transmission). For example, one or more (e.g., multiple) different SRS sequences can be transmitted to the first WTRU by one or more other WTRUs. CLI (e.g., SRS-CLI-RSSI) measurements and / or reports can be periodic, semi-persistent, and / or aperiodic. The first WTRU can receive configuration information indicating one or more SRS sequences associated with a CLI (e.g., SRS-CLI-RSSI) measurement. For example, the configuration information can include indications of one or more SRS sequences for a CLI measurement. For example, the first WTRU can receive sequences used for SRS transmissions via one or more MAC-CE and / or DCI indices for selection from an RRC configuration list. SRS sequences can include indices and / or identifiers (IDs).

[0084] The first WTRU can perform one or more CLI measurements on time and / or frequency resources. For example, the first WTRU can measure CLI (e.g., SRS-CLI-RSSI) on one or more of the configured time and frequency resources. For example, performing one or more CLI measurements may include measuring multiple SRS transmissions on the same time and / or frequency resource. For example, the first WTRU can perform energy (e.g., and / or power) level measurements on time and frequency resources. To perform CLI measurements, the first WTRU can perform energy level measurements and / or power level measurements on time and frequency resources. For example, if two or more different SRS sequences are used (e.g., transmitted by a second and a third WTRU), the first WTRU can derive SRS-CLI-RSSI by, for example, performing one or more measurements using one or more different SRS sequences and / or combining one or more measurements using predefined and / or preconfigured functions. For example, when one or more (e.g., multiple) different SRS sequences are used, the first WTRU can determine the CLI measurement based on performing the measurement using the different SRS sequences and / or combining the measurement using predefined and / or preconfigured functions.

[0085] The first WTRU can compare one or more CLI measurements to a threshold. The first WTRU can transmit indications for one or more CLI measurements. For example, if a measured CLI (e.g., SRS-CLI-RSSI) is higher than a first threshold and / or two or more different SRS sequences are used, the first WTRU can perform one or more of the following: For example, if it is determined that a measured CLI measurement among one or more CLI measurements is greater than a threshold and multiple SRS sequences are used between time and frequency resources, the first WTRU can perform one or more of the following: determine which SRS sequence among the multiple SRS sequences and transmit an indication for the SRS sequence, transmit the CLI associated with the SRS sequence, and transmit indications for one or more CLI measurements. The first WTRU can determine (for example, and / or attempt to determine) an SRS sequence from among multiple SRS sequences (e.g., the SRS sequence with the highest CLI, or an SRS sequence exceeding a configured second threshold, an SRS sequence with the highest SRS-RSRP, and / or an SRS sequence with an SRS-RSRP exceeding a configured third threshold). The first WTRU can report one or more of the determined SRS sequence (e.g., index or ID), the corresponding CLI, and / or the corresponding SRS-RSRP (e.g., if an SRS sequence is determined). The first WTRU can report a CLI measurement (e.g., SRS-CLI-RSSI). If one or more measured CLI measurements are determined to be below a threshold, the first WTRU can transmit an indication of the measured CLI measurement. For example, if the measured CLI (e.g., SRS-CLI-RSSI) falls below a first threshold, the first WTRU may report the CLI (e.g., SRS-CLI-RSSI).If it is determined that one or more measured CLI measurements are greater than a threshold and that a single SRS sequence was used during the time and frequency resources, and / or if the first WTRU is unable to determine an SRS sequence from among multiple SRS sequences, the first WTRU may perform one or more of the following: transmit an indication of one or more CLI (e.g., SRS-CLI-RSSI) measurements, and / or send a request to the network node to provide the WTRU with another (e.g., a new) measurement configuration having one or more SRS sequences and / or different SRS sequences. For example, if the measured CLI (e.g., SRS-CLI-RSSI) is higher than a first threshold and one SRS sequence (e.g., a single SRS sequence) is used, and / or if the first WTRU is unable to determine an SRS sequence from among SRS sequences, the first WTRU may perform one or more of the following: The first WTRU may report the measured CLI (e.g., SRS-CLI-RSSI). The first WTRU may send a request to the gNB to provide the WTRU with one or more (e.g., multiple) SRS sequences and / or a (e.g., new) measurement configuration having different SRS sequences.

[0086] With respect to beams, for example, a WTRU can transmit and / or receive physical channels and / or reference signals according to one or more spatial domain filters. The beam can be used to reference the spatial domain filters.

[0087] A WTRU can transmit physical channels and / or signals using the same spatial domain filters used to receive RS (such as CSI-RS) and / or synchronization signal (SS) blocks. The WTRU transmission may be called the target, and / or the received RS and / or SS blocks may be called the reference or source. In the example, it can be said that the WTRU references such RS and / or SS blocks and transmits the target physical channel and / or signals according to the spatial relationship.

[0088] The WTRU can transmit the first physical channel and / or signal according to the same spatial domain filter used to transmit the second physical channel and / or signal. The first and second transmits may be called the target and reference or source, respectively. In the example, the WTRU can transmit the first (e.g., target) physical channel and / or signal according to the spatial relationship with reference to the second (e.g., reference) physical channel and / or signal.

[0089] Spatial relationships may be implicit, configured by RRC, and / or signaled by MAC CE and / or DCI. For example, a WTRU may implicitly transmit PUSCH and / or demodulated reference signals (DM-RS) of PUSCH according to the same spatial domain filter as the SRS indicated by an SRS resource indicator (SRI) indicated by DCI and / or configured by RRC. In this example, the spatial relationship may be configured by RRC in the case of SRI and / or signaled by MAC CE in the case of PUSCH. Such spatial relationships may also, or alternatively, be called beam indications.

[0090] The WTRU can receive a first (e.g., target) downlink channel and / or signal according to the same spatial domain filter and / or spatial receive parameters as the second (e.g., reference) downlink channel and / or signal. For example, such an association can exist between a physical channel such as a PDCCH and / or PDSCH and its respective DM-RS. Such an association can exist, for example, when the WTRU is configured as a quasi-collocation (QCL) assumption type D between corresponding antenna ports, provided that at least the first and / or second signal is a reference signal. Such an association can be configured as a transmission configuration indicator (TCI) state. The WTRU can indicate an association between the CSI-RS and / or SS block and the DM-RS by indexing a set of TCI states configured by the RRC and / or signaled by the MAC CE. Such an indication may also, or alternatively, be called a beam indication.

[0091] A transmit and / or receive point (TRP) may be used interchangeably with one or more of the transmit point (TP), receive point (RP), radio remote head (RRH), distributed antenna (DA), base station (BS), sector (e.g., a sector of a BS), and / or cell (e.g., a geographic cell area provided by a BS). A multi-TRP may be used interchangeably with one or more of the MTRP, M-TRP, and / or multiple TRPs.

[0092] Subbands can be used to indicate frequency-domain resources and / or may include one or more of the following: a set of resource blocks (RBs), e.g., a set of resource blocks (RB sets) if the carrier has an intra-cell guard band; a set of interlaced resource blocks; a bandwidth portion (e.g., or a portion thereof); and / or a carrier (e.g., or a portion thereof). For example, a subband may include the starting RB and / or the number of RBs in a set of consecutive RBs within a bandwidth portion. Additionally or alternatively, a subband may include a frequency-domain resource allocation field and / or a bandwidth portion index value.

[0093] XDD may indicate subband-level duplexing (e.g., either UL or DL ​​is used for each subband) and / or may include one or more of the following: cross-division duplexing (e.g., subband-level frequency division duplexing (FDD) within the TDD bandwidth); subband non-overlapping full duplexing (SBFD); subband-based full duplexing (e.g., both UL and DL are used / or mixed on symbols and / or slots, but either UL or DL ​​is used for each subband on symbols / slots); frequency domain multiplexing (FDM) of DL and / or UL transmissions within the TDD spectrum; subband non-overlapping full duplexing (e.g., non-overlapping subband full duplexing); full duplexing at non-same frequencies (e.g., spectrum sharing, subband overlapping); and / or advanced duplexing methods, e.g., methods other than (pure) TDD and / or FDD.

[0094] The terms Dynamic TDD and / or Flexible TDD may be used to describe a TDD system / cell that can dynamically (e.g., and / or flexibly) change and / or adjust and / or switch the direction of communication (e.g., downlink, uplink, and / or sidelink) over a time instance (e.g., slot, symbol, subframe, etc.). For example, in a system employing Dynamic and / or Flexible TDD, component carriers (CCs) and / or bandwidth portions (BWPs) may have a single type of "D", "U", and / or "F" on symbols and / or slots, based on indication by Group Common (GC)-DCI (e.g., Format 2_0) including a Slot Format Indicator (SFI), and / or based on a tdd-UL-DL-config-common / dedicated configuration. For example, on a given time instance / slot / symbol, a first gNB (e.g., a cell, TRP) employing dynamic / flexible TDD can transmit a downlink signal 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. A second gNB (e.g., a cell, TRP) employing dynamic / flexible TDD can receive an uplink signal 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 the example, the first WTRU can determine that the reception of the downlink signal is being interfered with by the uplink signal, and the interference caused by the uplink signal may indicate inter-WTRU cross-layer interference (CLI).

[0095] A WTRU may report a subset of Channel State Information (CSI) components, where one or more CSI components may correspond to one or more of the following: CSI-RS Resource Indicator (CRI), Synchronization Signal / Physical Broadcast Channel (SS / PBCH) Block (SSBRI), panel indications used for reception at the WTRU (e.g., panel identifier and / or group identifier), one or more measurements such as L1-RSRP, L1-Signal-to-Noise Interference Ratio (SINR) obtained from SSB and / or CSI-RS (e.g., cri-RSRP, cri-SINR, ssb-Index-RSRP, ssb-Index-SINR), and / or one or more other Channel State Information components such as at least Rank Indicator (RI), Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), and Layer Index (LI).

[0096] A WTRU can perform channel and / or interference measurements. A WTRU can receive SSB. SSB can include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and / or a physical broadcast channel (PBCH). A WTRU can monitor, receive, and / or attempt to decode SSB during initial access, initial synchronization, radio link monitoring (RLM), cell search, cell switching, etc.

[0097] A WTRU can measure and / or report Channel Status Information (CSI), and a CSI for one or more (e.g., each) connection modes may include and / or be configured with one or more of the following: CSI report configuration, CSI-RS resource set, and / or NZP CSI-RS resources. A CSI report configuration may include one or more of the following: CSI report volume (e.g., Channel Quality Indicator (CQI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), CSI-RS Resource Indicator (CRI), Layer Indicator (LI), etc.); CSI report type (e.g., aperiodic, semi-permanent, periodic); CSI report codebook configuration (e.g., Type I, Type II, Type II port selection, etc.); and / or CSI report frequency. A CSI-RS resource set may include one or more of the following CSI resource settings: NZP-CSI-RS resources for channel measurement; NZP-CSI-RS resources for interference measurement; and / or CSI-IM resources for interference measurement. An NZP-CSI-RS resource may include one or more of the following: NZP-CSI-RS resource ID; periodicity and / or offset; QCL information and / or TCI status; and / or resource mapping (e.g., number of ports, density, CDM type, etc.).

[0098] A WTRU can indicate and determine one or more reference signals, and / or consist of one or more reference signals. A WTRU can, for example, monitor, receive, and / or measure one or more parameters based on each reference signal. For example, one or more of the following may apply: The following parameters may be non-limiting examples of parameters that may be included in the reference signal measurement. One or more of the parameters provided herein may be included. Other parameters may be included.

[0099] The SS reference signal received power (RSRP) (SS-RSRP) may be included in the reference signal measurement. SS-RSRP can be measured based on a synchronization signal (e.g., a demodulated reference signal (DMRS) in a PBCH or SSS). SS-RSRP can be a linear average of the power contributions of the resource elements (REs) carrying each synchronization signal. Power scaling of the reference signal can be included when measuring RSRP. When SS-RSRP is used for L1-RSRP, for example, the measurement can be performed based on a CSI reference signal in addition to the synchronization signal.

[0100] CSI-RSRP may be included in the reference signal measurement. 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 measurement can be performed within the measurement resources of the configured CSI-RS opportunity.

[0101] SS-SINR may be included in the reference signal measurement. SS-SINR can be measured based on a synchronization signal (e.g., DMRS in PBCH and / or SSS). SS-SINR is obtained by dividing the linear average of the power contributions of the resource elements (REs) carrying each synchronization signal by the linear average of the noise and interference power contributions. When SS-SINR is used for L1-SINR, for example, noise and / or interference power measurements can be performed based on resources composed of one or more higher layers.

[0102] CSI-SINR may be included in the reference signal measurement. CSI-SINR can be measured based on the linear average of the power contributions of the resource elements (REs) carrying each CSI-RS divided by the linear average of the noise and interference power contributions. When CSI-SINR is used for L1-SINR, for example, noise and / or interference power measurements can be performed based on one or more resources composed of one or more upper layers. Otherwise, noise and / or interference power can be measured, for example, based on the resources carrying each CSI-RS.

[0103] RSSI-SINR may be included in the reference signal measurement. RSSI can be measured based on the average of the total power contributions in the configured OFDM symbol and / or bandwidth. Power contributions may be received from one or more different resources (e.g., cochannel serving cells and / or non-serving cells, adjacent channel interference, thermal noise, etc.).

[0104] CLI-RSSI may be included in the reference signal measurement. CLI-RSSI may be measured based on the average of the total power contributions in the configured OFDM symbol of the configured time and / or frequency resources. Power contributions may be received from one or more different resources (e.g., cross-layer interference, co-channel serving cells and / or non-serving cells, adjacent channel interference, thermal noise, etc.).

[0105] SRS-RSRP may be included in the reference signal measurement. SRS-RSRP can be measured based on a linear average of the power contributions of the resource elements (REs) carrying each SRS.

[0106] SS-RSRQ can be included in the reference signal measurement. The Secondary Synchronization Signal (SS) Reference Signal Received Quality (RSRQ) (SS-RSRQ) can be measured based on one or more measurements of the Reference Signal Received Power (SS-RSRP) and / or Received Signal Strength Indicator (RSSI). For example, SS-RSRQ can be calculated as the ratio N × SS-RSRP / NR Carrier RSSI, where N may be determined based on the number of resource blocks within the corresponding NR Carrier RSSI measurement bandwidth. Thus, the measurements used in the numerator and / or denominator may lie on the same set of resource blocks.

[0107] CSI-RSRQ can be included in the reference signal measurement. CSI-RSRQ can be measured based on one or more measurements of the reference signal received power (CSI-RSRP) and / or the received signal strength indicator (RSSI). For example, SS-RSRQ can be calculated as the ratio N × CSI-RSRP / CSI-RSSI, where N may be determined based on the number of resource blocks within the corresponding CSI-RSSI measurement bandwidth. Thus, the measurements used in the numerator and / or denominator may be on the same set of resource blocks.

[0108] The properties of a grant and / or allocation may include one or more of the following: frequency allocation; time allocation mode such as duration; priority; modulation and / or coding scheme; transport block size; one or more (e.g., several) spatial layers; one or more (e.g., several) transport blocks; TCI state, CRI and / or SRI; one or more (e.g., several) iterations; whether the iteration scheme is type A or type B; whether the grant can be a configured grant type 1, type 2 and / or dynamic grant; whether the allocation can be a dynamic allocation and / or semi-persistent scheduling (e.g., configured) allocation; configured grant index and / or semi-persistent allocation index; periodicity of the configured grant and / or allocation; channel access priority class (CAPC), and one or more (e.g., arbitrary) parameters provided in the DCI by MAC and / or RC for scheduling the grant and / or allocation.

[0109] DCI indications can include one or more of the following: explicit indications by DCI fields used to mask and / or scramble the DCI's CRC and / or explicit indications by RNTI; and / or implicit indications by properties such as DCI format, DCI size, Coreset or search space, aggregation level, and / or the first resource element of the received DCI (e.g., the index of the first control channel element), where the mapping between properties and values ​​can be signaled by RRC and / or MAC. Receiving and / or monitoring DCI using RNTI may mean that the DCI's CRC is masked and / or scrambled by RNTI.

[0110] The signal may be used interchangeably with one or more of the following: sounding reference signal (SRS), channel status information-reference signal (CSI-RS), demodulation reference signal (DM-RS), phase tracking reference signal (PT-RS), and / or synchronization signal block (SSB).

[0111] The channel 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), and / or similar.

[0112] Downlink reception can be used interchangeably with Rx opportunities, PDCCH, PDSCH, and / or SSB reception. Uplink transmission can be used interchangeably with Tx opportunities, PUCCH, PUSCH, PRACH, and / or SRS transmission.

[0113] RS can be used in a compatible manner with one or more of the following: RS resources, RS resource sets, RS ports, and / or RS port groups. RS can be used in a compatible manner with one or more of the following: SSB, CSI-RS, SRS, and / or DM-RS.

[0114] In this specification, the terms time instance, slot, symbol, and / or subframe may be used interchangeably.

[0115] The terms UL-only Tx / Rx occasion and DL-only Tx / Rx occasion can be used interchangeably with (e.g., legacy) TDD UL or (e.g., legacy) TDD DL, respectively. For example, a (e.g., legacy) TDD UL / DL occasion might occur when SBFD is not configured and / or is disabled.

[0116] The terms received signal power, received signal energy, received signal strength, SSB energy per resource element (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 herein.

[0117] Inter-WTRU SB-CLI measurements and / or reporting in a victim WTRU based on SRS reception from an aggressor WTRU during SBFD operation may be considered herein. The systems, methods and apparatus described herein may be used, for example, for one or more (e.g., any kind) interference measurements and / or reporting based on one or more (e.g., any) reference signals in one or more (e.g., any) operating modes.

[0118] In this specification, the term CLI may be used interchangeably with interference. In this specification, the term non-SBFD may be used interchangeably with SBFD and / or TDD (e.g., legacy) operation without TDD.

[0119] In this specification, terms such as "WTRU may be configured," "WTRU may be indicated," and "WTRU may receive configuration" may mean, unless otherwise specified, that the configuration is indicated, for example, "via RRC, MAC-CE, DCI, MIB, SIB, etc." For example, "WTRU may be configured" may mean "WTRU may be configured via RRC, MAC-CE, MIB, SIB, etc."

[0120] In this specification, the terms victim WTRU and / or aggressor WTRU may be used. One or more (e.g., any kind) WTRUs may be associated with (e.g., performed) the methods, systems, and apparatus described herein.

[0121] With respect to subband non-overlapping full-duplex (SBFD), for example, a WTRU may consist of one or more types of slots within the bandwidth, where a first type of slot may be used and / or determined for a first direction (e.g., downlink), a second type of slot may be used and / or determined for a second direction (e.g., uplink), and a third type of slot may have a first group of frequency resources within the bandwidth for the first direction and / or a second group of frequency resources within the bandwidth for the second direction. Herein, bandwidth may be used interchangeably with bandwidth portions (BWP), carrier, subband, and / or system bandwidth. Herein, a first type of slot (e.g., a first-direction slot) may be referred to as a downlink slot. Herein, a second type of slot (e.g., a second-direction slot) may be referred to as an uplink slot. Herein, a third type of slot may be referred to as a subband (non-overlapping) full-duplex (SBFD) slot. In this specification, the group of frequency resources in the first direction may be referred to as the downlink subband, downlink frequency resources, and / or downlink RB. In this specification, the group of frequency resources in the second direction may be referred to as the uplink subband, uplink frequency resources, and / or uplink RB.

[0122] In the example, a (SBFD-enabled) WTRU can receive and / or configure one or more SBFD UL and / or DL ​​subbands in one or more DL and / or UL and / or flexible TDD time instances (e.g., symbols, slots, frames, etc.). The WTRU can consist of one or more resource allocations for the SBFD subbands. For example, an SBFD configuration may include a flag signal (e.g., enabled / disabled), where a first value (e.g., zero (0)) may indicate a first operating mode (e.g., SBFD configuration), and / or a second value (e.g., 1) may indicate a second operating mode (e.g., non-SBFD operation). The operating mode (e.g., SBFD vs. non-SBFD) may be indicated semi-statically (e.g., via RRC), dynamically (e.g., via MAC-CE, DCI, etc.) via MIB, SIB, etc. The WTRU can receive time resources (e.g., one or more symbols, slots, etc.). For example, a WTRU may be configured to use and / or apply a first operating mode (e.g., SBFD) in one or more BWPs, subbands, component carriers (CCs), cells, etc. The WTRU can receive frequency resources (e.g., subbands / BWPs containing one or more physical resource blocks (PRBs)) within a BWP (e.g., active and / or linked) in which the first operating mode (e.g., SBFD) is configured. Time instances (e.g., slots, symbols) may be represented based on periodic, semi-persistent, and / or aperiodic configurations. In the example, time instances may be represented via a bitmap configuration.

[0123] In the example, the WTRU can be configured with a DL TDD configuration for component carriers (CCs) and / or BWPs for one or more receive opportunities (e.g., a tdd-UL-DL-config-common / dedicated configuration, via a slot format indicator (SFI), etc.). Thus, when a first operating mode (e.g., SBFD) is configured, for example, one or more of the configured frequency resources (e.g., subbands, PRBs, and / or BWPs) can be configured for transmission on UL channels and / or transmit opportunities.

[0124] In the example, the WTRU can be configured with a UL TDD configuration for component carriers (CCs) and / or BWPs for one or more transmit opportunities (e.g., a tdd-UL-DL-config-common / dedicated configuration, via a slot format indicator (SFI), etc.). Thus, when a first operating mode (e.g., SBFD) is configured, for example, one or more of the configured frequency resources (e.g., subbands, PRBs, and / or BWPs) can be configured as DL channels and / or receive opportunities.

[0125] In the example, the WTRU can be configured with DL, UL, and / or flexible TDD configurations for component carriers (CCs) and / or BWPs for one or more transmit / receive opportunities (e.g., tdd-UL-DL-config-common / dedicated configurations, via slot format indicators (SFIs), etc.). Thus, if a first operating mode (e.g., SBFD) is configured, then, for example, one or more of the configured frequency resources (e.g., subbands, PRBs, and / or BWPs) may be configured for the first operating mode (e.g., either UL transmit and / or DL ​​receive based on configuration).

[0126] The duplex mode of the first operating mode (e.g., SBFD configuration (UL / DL)) can be indicated via a flag display, for example, a first value (e.g., zero (0)) can indicate the first mode (e.g., UL duplex mode), and a second value (e.g., 1) can indicate the second mode (e.g., DL duplex mode).

[0127] The duplex mode configuration and / or flags of the first operating mode (e.g., SBFD) can be configured as part of the mode of the operating configuration, which may be semi-static (e.g., via RRC) or dynamic (e.g., via DCI, MAC-CE).

[0128] The duplex mode configuration and / or flags for the first operating mode (e.g., SBFD) can be configured as part of the resource allocation configuration for transmit / receive opportunities.

[0129] With respect to CLI measurements, for example, a WTRU can be configured, determined, and / or directed to perform a measurement of a crosslink interference (CLI) received signal strength indicator (RSSI) over a given period, where the given period may be one or more slots, OFDM symbols, resource blocks (RBs), and / or resource elements (REs). CLI-RSSI that can be measured with a given time / frequency resource may be called L1-CLI-RSSI, short CLI-RSSI, aperiodic CLI-RSSI, etc. Additionally or alternatively, a WTRU can be configured, determined, and / or directed to perform a measurement of a reference signal received power (RSRP) based on one or more reference signals (e.g., SRS-RSRP) in the context of CLI measurements over a given period, where the given period may be one or more slots, OFDM symbols, resource blocks (RBs), and / or resource elements (REs). SRS-RSRP that can be measured with a given time / frequency resource may be called L1-SRS-RSRP, short SRS-RSRP, aperiodic SRS-RSRP, SRS-RSRP-CLI, etc. In this specification, CLI-RSSI, L1-CLI-RSSI, and RSSI may be used interchangeably. In this specification, SRS-RSRP, SRS-RSRP-CLI, L1-SRS-RSRP, and RSRP may be used interchangeably. One or more RSSI (e.g., or RSRP) types may be used, and a WTRU can be configured to perform one or more RSSI (or RSRP) types. Here, the first RSSI (e.g., or RSRP) type may be based on measurements over a long period (e.g., two or more slots), and / or the measurements may be reported via upper layer signaling (e.g., RRC, MAC), and the second RSSI (or RSRP) type may be based on measurements over a short period (e.g., one slot, within one slot, one or more OFDM symbols within one slot), and / or the measurements may be reported via layer 1 (L1) signaling (e.g., PUCCH, PUSCH, RACH, SRS).In this specification, RSSI may be used interchangeably with RSRP, RSRQ, and / or SINR. In this specification, CLI-RSSI may be used interchangeably with SRS-RSRP and / or SINR. WTRU may consist of a set of time / frequency resources for measuring L1-CLI-RSSI, where time / frequency resources for L1-CLI-RSSI measurement may be referred to as CLI-RSSI Measurement Resource (CRMR).

[0130] A CRMR can be a resource configured, determined, and / or defined (e.g., via RRC, MAC-CE, DCI) (e.g., via CLI-ResourceConfig, CLI-ResourceConfig-r-16, etc.) to have one or more of the following properties: A CRMR can contain a set of muted REs in a downlink resource (e.g., PDSCH), where the muted REs are rate-matched for downlink reception and / or uplink transmission and / or punctured. The set of muted REs can have the same pattern (e.g., the same time / frequency position) in each RB. The set of muted REs can have different patterns based on the RB location. For example, a first pattern may be used for RBs located on the edge of a scheduled RB, and / or a second pattern may be used for RBs located in the center of a scheduled RB. The first pattern and / or the second pattern can have a different number of muted REs. A muted RE may take the form of a zero-power resource (e.g., CSI-RS and / or ZP-CSI-RS). A CRMR may include a set of REs that are not scheduled and / or used by the WTRU for measuring the CRMR. A CRMR may include a set of REs that may be located within an RB which may be configured and / or determined to be a guard band (e.g., a guard RB). A guard band (or guard RB) may be located between an uplink resource and a downlink resource. The WTRU may skip receiving and / or transmitting signals within the guard band. A CRMR may include one or more reference signals (e.g., DMRS, SRS, sidelink CSI-RS, etc.). There is a second set of DMRS REs within a second CDM group (e.g., within a scheduled downlink resource / RB of a PDSCH), where the WTRU may receive a DCI indicating the first set of DMRS REs corresponding to the first CDM group used to schedule and receive the PDSCH.In one example, a WTRU may schedule a PDSCH and receive a DCI indicating a first set of DMRS REs corresponding to a first CDM group (based on the indicated "(DMRS) antenna port" field in the DCI). In response to receiving the DCI, the WTRU may determine that a second set of DMRS REs in a second CDM group (other than the first CDM group) can be used as a CRMR (e.g., within a scheduled PDSCH). The CRMR can then be placed within a scheduled resource (e.g., a scheduled PDSCH RB).

[0131] A CRMR can be configured for a set of WTRUs (e.g., adjacent WTRUs) (e.g., commonly). For example, a gNB can configure a CRMR for a group of WTRUs, and the group of WTRUs may share one or more of the following: a group ID for receiving DCI (e.g., group RNTI), a zone ID (the zone ID may be determined based on the geographical location of the WTRUs (e.g., Global Navigation Satellite System (GNSS))), and / or WTRUs paired for sidelink unicast (e.g., groupcast) transmissions.

[0132] In the example, L1-CLI-RSSI measurements (e.g., including CRMR resources) can be considered CSI reporting quantities and can be configured as part of the CSI reporting configuration.

[0133] A CRMR can be configured in a first subband type (e.g., DL subband) to measure one or more reference signals (e.g., their influence) received in a second subband type (e.g., UL subband). Thus, for example, the reference signals can be received and / or measured in one or more resources that can be identified as zero-power and / or muted resources. A WTRU can be configured, determined, and / or indicated to measure the influence of one or more reference signals transmitted in other resources (e.g., a second type of resource, UL subband) in one or more resources (e.g., a first type of resource, DL subband). For example, a first WTRU can be configured to measure SRS-RSRP in the DL subband on an SBFD configuration, where the SRS can be transmitted by a second WTRU in the UL subband. In the example, the first WTRU can measure SRS-RSRP based on SRS signaling configured in the DL subband. In the example, a WTRU can measure CLI-RSSI based on SRS signaling configured in the UL subband.

[0134] WTRU can be configured, determined, and / or indicated to perform a delta CLI-RSSI, which may be based on a first CLI-RSSI measurement at a first time / frequency location and / or a second CLI-RSSI measurement at a second time / frequency location. One or more of the following may apply: The delta CLI-RSSI (delta-CLI-RSSI) may be the difference between a first CLI-RSSI (e.g., CLI-RSSI1) and a second CLI-RSSI (e.g., CLI-RSSI2), e.g., delta-CLI-RSSI = CLI-RSSI1 - CLI-RSSI2 (e.g., and / or delta-CLI-RSSI = CLI-RSSI2 - CLI-RSSI1, etc.). The first CLI-RSSI may be measured from a CRMR resource located at the edge of the scheduled RB, and the second CLI-RSSI may be measured from a CRMR resource located in the center of the scheduled RB. A WTRU can consist of a first CRMR resource for a first CLI-RSSI measurement and / or a second CRMR resource for a second CLI-RSSI measurement. The WTRU may decide to report CLI measurement-related information, for example, if the measured delta CLI-RSSI is greater than a threshold. For example, CLI reporting can be triggered based on when the delta CLI-RSSI measurement is greater than a threshold, which can be predetermined and / or configured.

[0135] A WTRU can be configured and / or determined to measure CLI-RSSI for each subband level. For example, subbands may be configured and / or predetermined, and the WTRU may perform CLI-RSSI measurements on one or more (e.g., each) subbands. One or more of the following may apply: Subband size can be determined based on the number of scheduled RBs (e.g., in the case of PDSCH). The WTRU can report CLI-RSSI measurements for each subband. The WTRU can report a subset of CLI-RSSI, which can be determined based on one or more conditions (e.g., CLI-RSSI values ​​above a threshold, subband location (e.g., edges of scheduled RBs), and / or subband index).

[0136] A WTRU can determine the bandwidth of beam measurements and / or reports (e.g., broadband or subband) based on one or more of the following conditions: the type of time unit (e.g., SBFD or non-SBFD) and / or the presence of CLI-RSSI measurements. For example, a WTRU may report broadband CRI (e.g., broadband beam index) in non-SBFD time units (e.g., symbols, slots, etc.), and / or report subband CRI (e.g., subband beam index) in one or more SBFD time units. The presence of CLI-RSSI measurements may include the bandwidth of beam measurements, and / or reporting may be determined based on whether CLI-RSSI is measured in the same slot.

[0137] A WTRU can be instructed to perform a CLI-RSSI measurement at a specific frequency location within a scheduled RB (e.g., or an unscheduled RB), where the specific frequency location may be one or more of a subband, RB, and / or RE. This instruction may reside within a DCI that can trigger a CLI-RSSI measurement (e.g., aperiodic CLI-RSSI measurement). The specific frequency location can be indicated based on the frequency location of a CRMR resource. For example, one or more CRMR resources can be configured, and / or each CRMR resource can be positioned at a (e.g., specific) frequency location based on its configuration. A WTRU can be instructed to perform a measurement on a CRMR resource indicated in the DCI.

[0138] This specification describes embodiments of associations for aperiodic RS (e.g., SRS) transmission and / or (e.g., aperiodic) CSI measurement (e.g., in a victim WTRU). A WTRU (e.g., a first WTRU) may perform one or more of the following: The first WTRU (e.g., a potential victim WTRU) may receive configuration information relating to one or more reference signal (RS) resources. For example, the first WTRU may receive configuration information associated with one or more SRS resources. The RS resource configuration may include a sequence of reference signals, time and / or frequency resources (e.g., OFDM symbols and / or subcarrier occupancy). The RS may be based on an SRS. The first WTRU may receive indications and / or triggers (e.g., via DCI and / or MAC CE) for receiving and / or measuring one or more SRSs in each configured resource, and / or for measuring (e.g., aperiodic) CLI (e.g., SRS-RSRP). For example, the first WTRU may receive an indication and / or trigger for receiving and / or measuring an SRS transmission in one of one or more SRS resources, and / or for measuring a CLI. The SRS resources may be associated with time.

[0139] The first WTRU can dynamically receive (e.g., via DCI and / or MAC-CE) a timing offset (e.g., the number of symbols and / or slots) to apply when receiving and / or measuring RS (e.g., SRS). For example, the first WTRU can receive and / or determine the timing offset associated with an SRS transmission. The determination of the timing offset associated with an SRS transmission can be done, for example, based on the reception of the timing offset associated with the SRS transmission. The WTRU can receive configuration via Downlink Control Information (DCI) and / or MAC CE (medium access control control element) to determine the timing offset. For example, the WTRU can dynamically receive (e.g., the exact) value of the TAO applied with respect to the start time configured for receiving and / or measuring RS (e.g., SRS) (e.g., via DCI and / or MAC CE indications). The timing offset may be a timing advance (TA) for reception and / or may be separate from and / or different from the timing advance that the first WTRU may use for transmission. For example, the timing offset could be a TA for receiving an SRS transmission from a second WTRU, separate from the TA used by the first WTRU for transmitting an uplink (UL) transmission. The timing offset could be a delta offset value (e.g., ±n). For example, the timing offset could be associated with the number of timing advance instances with respect to the configured transmit timing advance value of the first UE. For example, the delta value could represent one or more (e.g., several) TA instances with respect to the TA value of the first WTRU's UL transmission.

[0140] The first WTRU can determine the time and / or time window for receiving an RS (e.g., an SRS) based, for example, on the time and / or timing offset of a configured resource. For example, the first WTRU can determine the time and / or time window for receiving an SRS transmission. For example, the time and / or time window may include one or more (e.g., several) symbols. The first WTRU can determine the time and / or time window for receiving an SRS transmission based, for example, on the time and / or timing offset associated with an SRS resource. The first WTRU can receive an RS (e.g., an SRS) at or during the determined time and / or time window in which the RS (e.g., an SRS) may be transmitted by the second WTRU (e.g., an Aggressor WTRU). For example, the first WTRU can receive an SRS transmission based on the time and / or time window. The SRS transmission may be transmitted by the second WTRU.

[0141] A first WTRU can measure a WTRU-to-WTRU CLI based on received SRSs (e.g., SRS-RSRP and / or CLI-RSSI for the UL and / or DL ​​subbands, respectively). For example, a first WTRU can perform one or more measurements for an SRS transmission. A first WTRU can perform one or more aperiodic measurements based on one or more aperiodic SRSs. Receipt of a timing offset can trigger a first WTRU to perform one or more measurements (e.g., aperiodic measurements). One or more measurements may include a WTRU-to-WTRU CLI based on received SRS transmissions. The WTRU-to-WTRU CLI may include SRS-RSRP and / or CLI-RSSI for UL and / or DL, respectively. A first WTRU can measure and / or determine a second timing offset based on when the WTRU received an RS (e.g., SRS) within a time window and / or the time of a configured resource. For example, a first WTRU can determine a second timing offset based on when the first WTRU received an SRS transmission within a time window and / or the time of the SRS resource. The first WTRU can report the measured CLI and / or the second timing offset to the gNB. For example, the first WTRU can send a message to a network node. The message may include an indication of one or more measurements. For example, the first WTRU can send a report to a network node. The report may include the measured CLI value and / or the second timing offset. While embodiments described herein are based on SRS, RS may be used interchangeably with SRS, for example.

[0142] For example, a first WTRU can dynamically receive repetitive RS (e.g., SRS) information (e.g., N) (e.g., via MAC-CE). The first WTRU can measure repetitive RS (e.g., SRS) transmissions (e.g., N, e.g., transmitted from a second WTRU).

[0143] The first WTRU can dynamically receive resources for RS (e.g., SRS) reception (e.g., via DCI, MAC-CE). For example, the first WTRU can be composed of candidate resources, one of which can be dynamically indicated (e.g., via DCI, MAC-CE) for use in measuring CLI. The first WTRU can monitor to receive RS (e.g., SRS) within the configured resources. The configured resources for receiving and / or measuring RS (e.g., SRS) can be identified as non-zero power (NZP), zero power (ZP), and / or muted resources. The first WTRU can measure the effect of SRS (e.g., SRS-RSRP, SRS-CLI-RSSI) transmitted on one or more other resources within the configured resources (e.g., WTRU measures on DL SB based on SRS transmitted on UL subband (SB)).

[0144] A WTRU may receive one or more configurations (e.g., via RRC) relating to the measurement and / or reporting of one or more reference signals (e.g., CSI-RS). A WTRU may receive one or more report configurations (e.g., via RRC, e.g., CSI-ReportConfig). A report configuration may include one or more of the following non-limiting parameters and / or options: carrier, measurement resource, report amount, report type, report frequency configuration, codebook configuration, and / or similar. A carrier may include, for example, the cell and / or carrier from which the report is sent. A measurement resource may include, for example, resources used for channel and / or interference measurements (e.g., CSI) (e.g., resourcesForChannelMeasurement, csi-IM-ResourcesForInterference, nzp-CSI-RS-ResourcesForInterference, etc., via CSI-ResourceConfig). The reported quantity may include, for example, the amount being reported (e.g., CRI, precoding matrix indicator (PMI), rank indicator (RI), CQI, layer indicator (LI), RSRP, etc.). The report type may include periodic, semi-permanent, and / or aperiodic, including periodicity, slot offset (e.g., reportSlotConfig), and the resources to which the report is sent (e.g., PUCCH and / or PUSCH resources, e.g., via pucch-CSI-ResourceList and / or reportSlotOffsetList, respectively). The report frequency configuration may include, for example, whether the measurement and / or reporting of the configured reference signal is based on subband and / or broadband, and / or on the subband size in the frequency domain (e.g., reportFreqConfiguration, subbandSize, etc.).A codebook configuration can include, for example, Type 1 and / or Type 2 codebook configurations that include codebook subset restrictions (e.g., codebookConfig).

[0145] A WTRU may receive one or more configurations regarding a list of resource sets to be measured (e.g., a CSI-RS resource set list) (e.g., via RRC, e.g., via CSI-ResourceConfig). A resource set list configuration may include a list of references to (e.g., CSI-RS) resources used to measure parameters such as channels, interference, and beams. For example, a resource set list configuration may include a list of references to one or more of the following, which are non-restrictive examples of reference lists and / or resource lists: One or more of these reference lists and / or resource lists may be included. Other reference lists, resource lists, and / or alternatives may be included. The NZP-CSI-RS resource set may be included. For example, the NZP-CSI-RS resource set may include a list of references to NZP CSI-RS resources used for beam, channel, and / or interference measurements and / or reporting within a CSI-RS resource set (e.g., via nzp-CSI-RS-ResourceSetList). The CSI SSB resource set may be included. For example, a CSI SSB resource set may include a list of references to beams, channels, and / or interferometry and / or reporting SSB resources within a CSI-RS resource set (e.g., via csi-SSB-ResourceSetList). A CSI-IM resource set may be included. A CSI-IM resource set may include a list of references to beams and / or interferometry and / or reporting CSI-IM resources within a CSI-RS resource set (e.g., via csi-IM-ResourceSetList). A ZP-CSI-RS resource set may be included. For example, a ZP-CSI-RS resource set may include a list of references to channels and / or interferometry and / or reporting ZP CSI-RS resources within a CSI-RS resource set (e.g., via zp-CSI-RS-ResourceSetList). The time domain type of the resource set may be included.For example, the time domain type of a resource set can include the time domain behavior of the resource configuration (e.g., periodic, semi-persistent, and / or aperiodic).

[0146] A WTRU may receive one or more configurations relating to time mapping and / or frequency mapping (e.g., CSI-RS-ResourceMapping) for one or more configured resource set lists (e.g., CSI-ResourceConfig as described herein). In an example, a WTRU may receive configurations relating to resource mapping for one or more reference signals and / or resources (e.g., NZP-CSI-RS-Resource, ZP-CSI-RS-Resource, etc.). For example, a first WTRU may receive configuration information associated with one or more SRS resources. For example, a resource mapping may indicate a sequence generated and / or used for a reference signal. In an example, a resource mapping may include time and / or frequency resources, which may indicate, for example, OFDM symbols and / or subcarrier occupancy of CSI-RS resources in a slot. Figure 4 shows an example of resource mapping for a reference signal. Figure 4 shows a non-limiting example of parameters. One or more parameters (e.g., shown in Figure 4) may be included. For example, it may include the number of bits and / or choices for one or more parameters (e.g., each parameter). It may also include one or more other numbers of bits and / or choices.

[0147] Where CLI measurements (e.g., SRS-RSRP, CLI-RSSI, etc.) can be considered analogous to CSI reporting quantities and / or can be configured as part of a CSI reporting setup, for example, applications and / or suggestions can be improved (e.g., along with one or more enhancements considered for CSI measurement and / or reporting). The systems, methods, and apparatus provided herein can address how a WTRU measures SRS RSRP and / or CLI-RSSI in the context of CSI measurement and / or reporting. The CSI-RS resource set can be used interchangeably with CSI-RS resources herein.

[0148] A WTRU may consist of one or more reference signals associated with one or more sequences. For example, a first WTRU may receive configuration information associated with one or more SRS resources. For example, the sequences may be based on SRS (e.g., Zadoff-Chu sequences). A WTRU may receive configuration (e.g., via RRC, MAC-CE, DCI) for one or more CSI-RS resource sets, including CSI resource settings (e.g., NZP-CSI-RS resources), where the sequence of reference signals may be based on a first RS type (e.g., CSI-RS, e.g., pseudo-random sequences), a second RS type (e.g., SRS, e.g., Zadoff-Chu sequences), and so on.

[0149] The WTRU can be configured, determined, and / or instructed (e.g., via RRC, MAC-CE, DCI) to use a configured reference signal (e.g., SRS) for measuring channel and / or interference parameters (e.g., SRS-RSRP, CLI-RSSI, etc.).

[0150] In the example, the WTRU may receive indications to a table and / or list for determining one or more parameters used to generate and / or determine a configured RS (e.g., a sequence) based on a first RS (e.g., a CSI-RS, e.g., a pseudo-random sequence). In the example, the WTRU may receive one or more indications regarding parameters (e.g., root index, cyclic shift, etc.) used to generate and / or determine a configured RS (e.g., a sequence) based on a second RS (e.g., a SRS, e.g., a Zadoff-Chu sequence).

[0151] WTRU can measure one or more reference signals on DL, UL, flexible TDD, and / or guard bands.

[0152] In the example, a WTRU can be configured, determined, and / or instructed (e.g., via RRC, MAC-CE, DCI) to measure one or more reference signals within one or more frequency domain resources, where the reference signals can be received within the same or different and / or separate frequency domain resources.

[0153] A WTRU can perform one or more measurements on the same frequency resource as the received RS. For example, a WTRU can be configured, determined, and / or instructed (e.g., via RRC, MAC-CE, DCI) to measure one or more reference signals in one or more frequency domain resources, in which case the reference signals are received on the same frequency domain resource. For example, a WTRU can measure reference signals in one or more types of frequency domain resources. For example, a WTRU can measure reference signals in a first type of frequency domain resource (e.g., UL subband, RB, BWP, etc.), a second type of frequency resource (e.g., DL subband, RB, BWP, etc.), a third type of frequency resource (e.g., flexible subband, RB, BWP, etc.), a fourth type of frequency resource (e.g., guard band), and / or similar frequency resources, etc.

[0154] A WTRU can receive configurations for one or more sets of CSI-RS resources, including CSI resource settings such as NZP-CSI-RS resources, ZP-CSI-RS resources, and CSI-IM resources (e.g., via RRC, MAC-CE, DCI). For example, if the CSI resource setting is set to an NZP-CSI-RS resource, the WTRU can use measured parameters based on the measurement, calculation, and / or estimation of the channel's configured reference signal and / or interference (e.g., RSRP, SINR, RSRQ, CLI, etc.). For example, if the CSI resource setting is set to a ZP-CSI-RS resource, the WTRU can use measured parameters based on the configured resources for interference measurement, calculation, and / or estimation (e.g., SINR, CQI, RSRQ, CLI, etc.). In the example, if the CSI resource setting is set to a CSI-IM resource, the WTRU can use the measured parameters based on the configured reference signal and / or resource for interference measurement, calculation, and / or estimation (e.g., SINR, CQI, RSRQ, CLI, etc.).

[0155] A WTRU can perform one or more measurements on one or more different frequency resources as the received RS. For example, a WTRU can be configured, determined, and / or instructed (e.g., via RRC, MAC-CE, DCI) to measure one or more reference signals in one or more frequency domain resources, in which case the reference signals are received in different and / or different frequency domain resources. For example, a WTRU can receive a reference signal in a first type of frequency domain resource (e.g., UL subband, RB, BWP, etc.), and the WTRU can measure the reference signal in a second type of frequency resource (e.g., DL subband, RB, BWP, etc.), a third type of frequency resource (e.g., flexible subband, RB, BWP, etc.), a fourth type of frequency resource (e.g., guard band), and / or similar.

[0156] A WTRU can receive configurations (e.g., via RRC, MAC-CE, DCI) for one or more sets of CSI-RS resources, including CSI resource settings such as NZP-CSI-RS resources, ZP-CSI-RS resources, and CSI-IM resources. One or more of the following may apply: NZP-CSI-RS resources, ZP-CSI-RS resources, and / or CSI-IM resources. For example, if the CSI resource setting is set to an NZP-CSI-RS resource, the WTRU can use one or more measured parameters based on the measurement, calculation, and / or estimation of the channel's configured reference signal and / or interference (e.g., RSRP, SINR, RSRQ, CLI, etc.). For example, a first WTRU (e.g., a victim UE) can receive one or more SRS signals transmitted via at least a second WTRU (e.g., an aggressor UE) in the UL subband within an SBFD configuration. The first WTRU may be configured to measure the received SRS signal (e.g., the effect of that SRS signal) in the DL subband, flexible subband, and / or guard band via the NZP-CSI-RS resource to determine the interference effect of such transmission in the DL subband, flexible subband, and / or guard band (e.g., for CLI measurement). For example, the first WTRU can be configured to measure the received power of a reference signal (e.g., SRS-RSRP) in the DL subband, flexible subband, and / or guard band. For example, if the CSI resource setting is set to the ZP-CSI-RS resource, the WTRU can use the resource to measure the received signal strength of the channel and / or parameters based on interference measurements, calculations, and / or estimations (e.g., RSSI, CLI, etc.). For example, the first WTRU (e.g., Victim WTRU) may receive one or more SRS signals transmitted in the UL subband in an SBFD configuration via at least a second WTRU (e.g., Aggressor WTRU).A first WTRU may be configured to measure SRS signals (e.g., the effects of such SRS signals) received in the DL subband, flexible subband, and / or guard band via the ZP-CSI-RS resource to determine the interference effects of such transmissions in the DL subband, flexible subband, and / or guard band (e.g., for CLI measurement). For example, a first WTRU can be configured to measure reference signal strength (e.g., CLI-RSSI, SRS-CLI-RSSI) in the DL subband, flexible subband, and / or guard band. In the example, if the CSI resource setting is set to the CSI-IM resource, the WTRU can use one or more measured parameters (e.g., interference, CLI, etc.) based on the configured reference signal and / or resource for interference measurement, calculation, and / or estimation. For example, a first WTRU (e.g., Victim WTRU) may receive one or more SRS signals transmitted in the UL subband within an SBFD configuration via at least a second WTRU (e.g., Aggressor WTRU). The first WTRU may be configured to measure interference received in the DL subband, flexible subband, and / or guard band via the CSI-IM resource (e.g., for CLI measurement). For example, the first WTRU can be configured to measure reference signal strength (e.g., CLI-RSSI) in the DL subband, flexible subband, and / or guard band.

[0157] WTRU can be configured in association with two-step configuration indicators (e.g., timing advance offset, repeat, muted / CSI-ZP resource / CSI-NZP resource / CSI-IM, power backoff / adjustment, etc.).

[0158] This specification describes embodiments for performing aperiodic measurements, configurations, and / or triggers. A first WTRU (e.g., a potential victim WTRU) can receive one or more configurations (e.g., via RRC, MAC-CE, DCI) to measure one or more parameters (e.g., RSRP, CLI, etc.) based on one or more reference signals transmitted from at least a second WTRU (e.g., a potential aggressor WTRU). For example, the first WTRU can receive configuration information associated with one or more SRS resources. The configuration may include resources for measuring the configured reference signals, and the measurements may be configured to be aperiodic.

[0159] In the example, a first WTRU may receive one or more configurations for performing (e.g., associated) aperiodic measurements based on one or more aperiodic reference signals (e.g., SRS) received from a second WTRU. In the example, the configurations may include a resource type indicating an aperiodic configuration of a resource, one or more lists of aperiodic trigger states, and resource mappings indicating time and / or frequency resources for monitoring and / or measuring the configured reference signals. For example, a first WTRU may receive an SRS transmission in one of the one or more SRS resources and / or receive a trigger for measuring CLI. The SRS resources may be associated with time.

[0160] In the example, the first WTRU can receive one or more trigger signals (e.g., via MAC-CE, DCI) that trigger a periodic measurement of one or more reference signal resource sets based on time and / or frequency resources configured for measurement. Here, the reference signals can be transmitted from at least the second WTRU. For example, the first WTRU can receive an SRS transmission in one of the one or more SRS resources and / or receive a trigger for measuring CLI. The SRS resources may be associated with time.

[0161] The WTRU can be configured in association with an indication for a two-step configuration for aperiodic measurements. The WTRU can receive a first parameter and / or setting via a configuration for aperiodic measurements (e.g., via RRC, MAC-CE, DCI), and the WTRU can receive a second parameter and / or setting via an indication (e.g., via MAC-CE, DCI), where the WTRU can use the second parameter and / or setting to replace, substitute, adjust, change, and / or modify the first parameter and / or setting. For example, one or more of the following may be applied: start time adjustment, number of repetitions, power backoff, and / or similar. Regarding start time adjustment, for example, the WTRU may receive a start time configuration and an indicated timing advance offset for receiving and / or transmitting a configured and / or indicated DL / UL signal or channel, where the WTRU may use a second indicated timing advance offset to adjust the start time and / or start receiving and / or transmitting the configured and / or indicated DL / UL signal and / or channel earlier than the configured start time. Regarding the number of repetitions, for example, the WTRU may consist of the number of repetitions for transmitting and / or receiving the signal and / or channel, where the WTRU may use a second received indication to adjust the number of repetitions configured accordingly. Regarding power backoff, for example, the WTRU may consist of a power adjustment and / or power backoff value, where the WTRU may use a second received indication to correct, adjust and / or modify the power backoff value accordingly.

[0162] A WTRU can be configured (for example, for aperiodic measurements) using one or more parameters (e.g., via RRC, MAC-CE, DCI), and the configuration may be divided into one or more different levels of properties. For example, a CSI-RS configuration (e.g., the overall configuration) can be divided into one or more (e.g., three) different levels of properties, namely CSI-ResourceConfig, CSI-RS-ResourceSet, and / or CSI-RS-Resource, which may include (e.g., define) high-level properties, behavioral-level properties, and / or resource-level properties, respectively.

[0163] In the example, a WTRU can be configured using a first configured parameter (e.g., via RRC, MAC-CE, DCI) as part of a first-level property, a second-level property, a third-level property, etc., where a second received indication (e.g., via MAC-CE, DCI) may result in adjustments, substitutions, and / or modifications to the configured parameter at each level. In the example, adjustments, substitutions, and / or modifications to the configured parameter at a property level may result in adjustments, substitutions, and / or modifications to the configured parameter at one or more lower-level properties. For example, one or more of the following may apply: In the example, a WTRU can be configured with a first parameter (e.g., start time) as part of a CSI-ResourceConfig. Thus, for example, a second received indication (e.g., timing advance offset) may apply to each corresponding and / or associated CSI-RS resource set and / or CSI-RS resource. In the example, a WTRU can be configured with a first parameter (e.g., start time) as part of a CSI-RS-ResourceSet. Therefore, for example, a second received indication (e.g., timing advance offset) may be applied to each CSI-RS resource configured in that CSI-RS resource set. In the example, WTRU may consist of a first parameter (e.g., start time) as part of the CSI-Resource configuration. Therefore, for example, a second received indication (e.g., timing advance offset) may be applied to (e.g., only to) a specific configured SRS resource in the SRS resource set. In the example, the first parameter may consist of one or more levels of CSI-RS configuration. For example, WTRU may consist of the values ​​of the first parameter in both the CSI-RS resource set and the CSI-RS resources.Therefore, a second received indication (e.g., a timing advance offset via MAC-CE or DCI) may indicate a specific combination of values ​​for the first parameter configured in the CSI-RS resource set and the CSI-RS resource.

[0164] Regarding the MAC-CE indication of the second indication, for example, the WTRU may receive the first parameter and / or setting (e.g., start time, power backoff, repetition, etc.) via a configuration for aperiodic (CSI-RS) measurements (e.g., via RRC, MAC-CE, DCI), and the WTRU may receive the second parameter and / or setting via an indication (e.g., via MAC-CE) indicating that values ​​should be replaced and / or substituted to adjust, change and / or modify the first parameter and / or setting. The second indication (e.g., MAC-CE) may be received before, after and / or on the same slot in which the aperiodic CSI measurement is triggered (e.g., via DCI). In the example, the second indication (e.g., via MAC-CE) may be valid indefinitely until updated. In the example, the second indication (e.g., via MAC-CE) may consist of a time validity window based on the reception of a trigger command (e.g., DCI in PDCCH), and the WTRU may consider the second indicated parameter (e.g., only) for one or more (CSI-RS) measurements triggered within that window.

[0165] With respect to the DCI indication of the second indication, for example, the WTRU can receive the first parameter and / or setting (e.g., start time, power backoff, repetition, etc.) via a configuration for non-periodic (CSI-RS) measurements (e.g., via RRC, MAC-CE, DCI), and the WTRU can use the configured parameter and / or setting. The WTRU can receive an indication (e.g., DCI) for the second parameter and / or setting to use the second parameter (e.g., after using the first configured parameter and / or setting), and can modify and / or adjust the first configured parameter for one or more of the following until an indication for a specific transmission (e.g., based on DCI); a period (e.g., based on a timer); one or more transmissions (e.g., based on DCI or MAC-CE); and / or switchback (or switch again) can be received (e.g., based on activation and / or deactivation that can be received in DCI and / or MAC-CE).

[0166] With respect to the dynamic representation of Timing Advance Offset (TAO) values, for example, a first WTRU (e.g., a potential victim UE) can receive one or more indications (e.g., via MAC-CE, DCI, e.g., dynamic representation) that include one or more timing offset values ​​for receiving one or more reference signals (e.g., aperiodic) transmitted from at least a second WTRU (e.g., a potential aggressor WTRU). The first WTRU can determine the time resources for monitoring, receiving, and / or measuring the configured (aperiodic) reference signals based, for example, on a two-step representation method. That is, the first WTRU can use one or more (e.g., dynamically) indicated timing offset values ​​in addition to the configured time resources to determine the time resources for monitoring, receiving, and / or measuring the configured (aperiodic) reference signals (which may be associated with aperiodic SRS transmissions from a second WTRU, for example). For example, the first WTRU can receive and / or determine the timing offset associated with an SRS transmission. For example, a first WTRU may receive one or more different timing advance offset values ​​associated with a different second WTRU configured to transmit a configured reference signal (e.g., SRS). In the example, the first WTRU may adjust the time resources for monitoring, receiving, and / or measuring the configured (aperiodic) reference signal by pre-starting based on the indicated timing offset values ​​with respect to the configured time resources. As described herein, the timing advance offset may be a second timing advance for this type of aperiodic RS transmission and is separate from the first timing advance used for other UL transmissions at the second WTRU (e.g., PUCCH, PUSH, SRS transmissions at an Aggressor WTRU). For example, the timing offset may be a TA for receiving SRS transmissions from the second WTRU, separate from the TA used by the first WTRU for transmitting uplink transmissions.For example, the first WTRU can determine a second timing offset based on when the first WTRU received an SRS transmission within a time window and / or the time of the SRS resource.

[0167] Figure 5 shows an example of a two-step timing advance configuration 500. In Figure 5, the first (e.g., Victim)WTRU 502 can be configured (e.g., via RRC, MAC-CE, DCI) with a start time to receive and / or measure a reference signal (e.g., SRS) from the second WTRUs 504, 506. The first (e.g., Victim)WTRU 502 can receive (e.g., via MAC-CE, DCI) an indication of a reference signal (e.g., SRS1 and / or SRS2 used by AggressorWTRU1 504 and / or AggressorWTRU2 506, respectively) that may be used by the second WTRUs 504, 506. The first (e.g., victim) WTRU502 can receive indications (e.g., via MAC-CE, DCI) regarding the timing advance offsets (TAO) associated with the second WTRU504, 506 (e.g., TAO1 and TAO2 for aggressor WTRU1 504 and aggressor WTRU2 506, respectively).

[0168] In 508a, for example, Aggressor WTRU1 504 can transmit SRS1 to a first (e.g., victim) WTRU 502. In 508b, for example, Aggressor WTRU2 506 can transmit SRS2 to a first (e.g., victim) WTRU 502.

[0169] The first WTRU 502 may decide to pre-start receiving and / or measuring indicated reference signals (e.g., SRS1 and / or SRS2) based on indicated TAOs (e.g., TAO1 and / or TAO2) with respect to a configured start time for receiving and / or measuring RS (e.g., SRS). For example, the first (e.g., Victim) WTRU 502 may receive and / or determine a timing offset associated with an SRS transmission. Determining the timing offset may be done based on the reception of a timing offset associated with an SRS transmission. The timing offset may be received via DCI and / or MAC CE. The first (e.g., Victim) WTRU 502 may decide to receive and / or start one or more measurements based on one or more TAOs. For example, in 510a, the first (e.g., Victim) WTRU 502 may pre-start one or more measurements based on SRS1 (e.g., transmitted from Aggressor WTRU 1 504 to 508a). For example, in 510b, the first (e.g., Victim)WTRU502 may pre-initiate one or more measurements based on the SRS2 (e.g., transmitted in AggressorWTRU2 506 to 508b). In 512, the first (e.g., Victim)WTRU502 may consist of an initiation time for measuring a configured RS (e.g., SRS).

[0170] In the example, a first WTRU (e.g., a potential victim WTRU) can determine a time (window) for monitoring, receiving, and / or measuring configured and / or indicated RS (e.g., SRS) transmitted from at least a second WTRU (e.g., aggressor WTRUs 504, 506), where the timing advance offset can be zero or non-zero. The first WTRU can determine a time and / or time window for receiving an SRS transmission based, for example, on a time and / or timing offset associated with an SRS resource. The first (e.g., victim) WTRU 502 can receive an SRS transmission based on the time and / or time window. The SRS transmission can be transmitted by a second WTRU (e.g., aggressor WTRU 1 504 and / or aggressor WTRU 2 506).

[0171] The first (e.g., victim) WTRU502 can perform one or more measurements on an SRS transmission. Performing one or more measurements may include, for example, performing one or more aperiodic measurements based on one or more aperiodic SRSs. The first (e.g., victim) WTRU502 can send a message to a network node. For example, the first (e.g., victim) WTRU502 can send a message to a network node associated with gNB1 514a. For example, the first (e.g., victim) WTRU502 can send a message to a network node associated with gNB1 514b. The message may include one or more measurements (or indications thereof). One or more measurements may include, for example, an inter-WTRU CLI based on a received transmission. The inter-WTRU CLI may include SRS-RSRP and / or CLI-RSSI of the UL SB and / or DL ​​SB.

[0172] In the example, the first WTRU may receive one or more indications for one or more non-zero TAOs, where (e.g., exact) time values ​​may be indicated relative to the TAOs. In the example, the first WTRU may receive one or more delta offset values ​​(e.g., + / -n) for indications of timing advance offsets. Thus, for example, the first WTRU may determine a timing advance offset by adding to the indicated delta offset value a timing advance that may be configured for the first WTRU (e.g., configured via configured, triggered, and / or indicated UL transmissions from the first WTRU, e.g., timing advance commands (TAC) for PUSCH, PUCCH, SRS). For example, the timing offset may be a delta offset value. For example, the delta offset value may indicate one or more (e.g., several) TA instances relative to the TA value of the UL transmission of the first WTRU.

[0173] In the example, the first WTRU may receive one or more indications relating to one or more zero TAOs. Thus, for example, the first WTRU may determine that the indicated TAO is zero, and the first WTRU may not use one or more (e.g., arbitrary) timing advances to monitor, receive, and / or measure the configured and / or indicated reference signals. In the example, the first WTRU may not receive one or more (e.g., arbitrary) configurations and / or indications relating to the TAO, and here the first WTRU may decide to consider the TAO as zero.

[0174] With respect to the dynamic representation of repetition values, for example, a first WTRU (e.g., a potential victim WTRU) can receive one or more indicators (e.g., dynamic representation via MAC-CE, DCI) containing repetition values ​​for receiving one or more reference signals (e.g., aperiodic SRS) transmitted from at least a second WTRU (e.g., a potential aggressor WTRU). For example, the first (e.g., victim) WTRU 502 can receive SRS repetition information. The first (e.g., victim) WTRU 502 can measure repetitive SRS transmissions based on the SRS repetition information.

[0175] The first WTRU can use a second indication of one or more (e.g., several) repetitions to receive and / or measure configured and / or indicated parameters, for example, based on a configured and / or indicated reference signal. That is, the first WTRU can determine one or more (e.g., several) repetitions to monitor, receive and / or measure a configured (aperiodic) reference signal (which may be associated with aperiodic SRS transmissions from the second WTRU), using (e.g., dynamically) indicated repetition values ​​instead of configured repetitions.

[0176] With respect to the dynamic representation of resources (e.g., NZP CSI-RS, ZP CSI-RS, CSI-IM), for example, a first WTRU (e.g., a potential victim WTRU) can be configured (e.g., via RRC, MAC-CE, DCI) with one or more candidate time and / or frequency resources (e.g., NZP CSI-RS, ZP CSI-RS, CSI-IM, muted resources, etc.) for (e.g., aperiodic) CSI measurements (e.g., SRS-RSRP based on aperiodic SRS transmitted from at least a second WTRU (e.g., a potential aggressor WTRU)), where the first WTRU can receive a second indication (e.g., via MAC-CE, DCI) to select one or more resources to be used from the first list.

[0177] Therefore, for example, the first WTRU can use the second indication to select one or more resources from a first configured list for receiving and / or measuring configured and / or indicated parameters based on the configured and / or indicated reference signal. That is, the first WTRU can use the (e.g., dynamically) indicated resources to monitor, receive and / or measure a configured (e.g., aperiodic) reference signal (which may be associated, for example, with aperiodic SRS transmission from the second WTRU).

[0178] With respect to measurement and / or reporting, a first WTRU (e.g., a victim WTRU) can perform channel and / or interference measurements based, for example, on one or more configured and / or parameters of a configured and / or indicated resource. For example, the first WTRU can receive one or more reference signals (e.g., SRS) in a first type of frequency resource (e.g., UL SB, e.g., SBFD configuration), and the first WTRU can measure the received power based, for example, on a reference signal (e.g., SRS-RSRP) in the same frequency resource. In the example, the first WTRU is capable of receiving one or more reference signals (e.g., SRS) in a first type of frequency resource (e.g., UL SB, e.g., SBFD configuration), and the first WTRU measures received power based on the reference signal (e.g., SRS-RSRP) and / or received signal strength (e.g., CLI-RSSI and / or SRS-CLI-RSSI) in a different set of frequency resources and / or a second type of frequency resource (e.g., DL SB, e.g., SBFD configuration). The first WTRU can report one or more measured parameters (e.g., to a gNB) based, for example, on configured reporting resources and / or periodicity.

[0179] The first WTRU can determine and / or estimate one or more parameters based on, for example, the received reference signal. For example, the first WTRU can determine the timing advance offset corresponding to the second WTRU based on the SRS received from the second WTRU. The first WTRU can report the estimated timing advance offset of the corresponding second WTRU (e.g., gNB) based on, for example, the configured reporting resources and / or periodicity. For example, the first WTRU can send a report to a network node. The report may include the measured CLI value and / or the second timing offset.

[0180] This specification describes embodiments for processing aperiodic SRS transmissions in a WTRU. A WTRU (e.g., a first WTRU) may perform one or more of the following: The first WTRU (e.g., a potential aggressor WTRU) may receive configurations (e.g., including time and / or frequency resources in its serving cell) for one or more aperiodic SRS transmissions (e.g., within a UL SB in an SBFD configuration). For example, the first WTRU may receive configuration information associated with one or more SRS transmissions. For example, the first WTRU may receive configurations for one or more aperiodic SRS transmissions for CLI measurements in a second WTRU (e.g., a potential victim WTRU).

[0181] With respect to timing advance, for example, a first WTRU may receive an indication of which cell to use as the basis for timing and / or timing advance of an SRS transmission using the resources of its serving cell (e.g., and / or whether to use that serving cell and / or a different cell). For example, a first WTRU may receive an indication of the serving cell of a second WTRU used to determine the timing and / or timing advance of an SRS transmission. This indication may be based on a radio resource control (RRC) indication of a set of resources (e.g., for a serving cell and / or another cell). For example, a first WTRU may receive this indication via an RRC indication of a set of resources.

[0182] A WTRU can receive configuration information associated with one or more SRS transmissions. A first WTRU can receive indications via DCI and / or MAC CE. For example, a first WTRU can receive indications via DCI / MAC-CE for selection from a set.

[0183] The first WTRU can determine the time to transmit an SRS based on an indication. For example, the first WTRU can determine the time used for transmitting an SRS based on the same serving cell or a different / non-serving cell. Based on the same serving cell (e.g., if the victim WTRU and aggressor WTRU are in the same cell), the first WTRU can determine the time to transmit an SRS based on the DL timing of that serving cell (e.g., timing advance information and / or commands (received from the gNB)). For example, based on the determination that the serving cell of the second WTRU is the same as the serving cell of the first WTRU, the first WTRU can determine the time to transmit an SRS based on the DL timing of the serving cell. The timing advance may be a first type of timing advance used by the first WTRU for transmitting UL signals and / or channels (e.g., physical uplink control channel (PUCCH), physical uplink sharing channel (PUSCH), SRS, etc.), and / or the timing advance may be a second type of timing advance used by the first WTRU for transmitting SRS measured by the second WTRU. The first WTRU can receive configurations regarding the timing advance (e.g., via RRC, MAC-CE, and / or DCI). Based on different / non-serving cells (e.g., if the victim WTRU and aggressor WTRU are not in the same cell), the first WTRU may decide to transmit SRS based on the DL reference timing of the indicated cell (e.g., with the timing advance information (received from the gNB) added). For example, if the serving cell of the second WTRU is determined to be an adjacent cell of the first WTRU, the first WTRU may decide when to transmit an SRS transmission based on the DL timing of the adjacent cell. If the serving cell of the second WTRU is determined to be an adjacent cell of the first WTRU, the first WTRU can measure one or more DL RS from the adjacent cell to determine the DL timing.

[0184] The timing advance may be a first type of timing advance used by the first WTRU for transmitting UL signals and / or UL channels (e.g., PUCCH, PUSCH, SRS, etc.), and / or the timing advance may be a second type of timing advance used by the first WTRU for transmitting SRS measured by the second WTRU. For example, the first WTRU can transmit SRS transmissions measured by the second WTRU based on the second timing advance. The timing advance for different / non-serving cells may be similar to or different from the timing advance that the first WTRU may use for transmission within the same serving cell. The WTRU can receive configurations regarding the timing advances (e.g., via RRC, MAC-CE, and / or DCI). The first WTRU can determine DL timings by measuring one or more configured / indicated DL RSs (e.g., SSB, CSI-RS, etc.) from an indicated cell, for the purpose of this type of aperiodic SRS transmission. The first WTRU can transmit an SRS using the determined DL timing and / or timing advance (for example, using the resources of its serving cell). For example, the first WTRU can transmit an SRS based on the time determined to transmit the SRS. For example, the first WTRU can determine the time to transmit an SRS based on the timing advance that the first WTRU uses for UL transmissions in its serving cell.

[0185] The first WTRU may consist of a first SRS resource within the UL SB and / or a second SRS resource outside the UL SB (e.g., within the DL SB) (e.g., in an SBFD slot or other time unit). The first WTRU may determine, for example, whether the SRS transmit resource is within the UL SB and / or DL ​​SB (e.g., the first SRS resource or the second SRS resource, respectively), and, if the SRS transmit resource is within the UL SB, how close it is to the boundary of the UL SB, and / or whether to apply power adjustments to the SRS transmit. For example, the first WTRU may determine power adjustments to apply to the SRS transmit based on whether the SRS transmit resource is within the UL SB or DL ​​SB, and / or based on one or more power control (PC) related parameters. In the example, the first WTRU may receive a configuration of one or more power adjustment (e.g., backoff) values. For example, the first WTRU may receive one or more power adjustment values. The power adjustment values ​​may consist of one or more adjustment values. For example, when an SRS transmit resource may be located within a first SRS resource (e.g., UL SB), the first WTRU can perform an SRS transmit without applying one or more power adjustment values. The first WTRU can transmit an SRS without applying one or more adjustment values, and the SRS transmit resource may be located within a UL SB. For example, when an SRS transmit resource (e.g., one or more SRS transmit resources) is located within a second SRS resource (e.g., DL SB), the first WTRU can transmit an SRS by applying power adjustments to the transmit power, in which case the power adjustments are determined (e.g., from configured power adjustments) based on one or more of the frequency (e.g., resource block (RB)) distance between the boundary of the UL SB and the reference RB of the SRS resource, and / or the minimum frequency (e.g., RB) distance between the boundary of the UL SB and the RB of the SRS resource.For example, a first WTRU can transmit an SRS transmission based on one or more of the frequency distance between the boundary of the UL SB and the reference RB of the SRS resource, and the minimum frequency distance between the boundary of the UL SB and the RB of the SRS resource, and the SRS transmission resource may be contained within the DL SB.

[0186] A WTRU may be configured and / or indicated to transmit one or more SRSs, where one of the SRS resources may be configured for one or more (e.g., specific) purposes, such as beam management, channel acquisition (e.g., based on channel interoperability), link adaptation, antenna switching, and / or similar. The (e.g., specific) purpose may be interpreted as being for a communication link between the WTRU and a gNB (e.g., its serving gNB, cell, TRP, etc.), which may be indicated by a first SRS type. The first SRS type may be a non-limiting example of a type of SRS that can be used for and / or to support a communication link between the WTRU and its serving cell and / or TRP and / or gNB. The WTRU can apply (for example, be configured to apply) a first timing advance (TA) to a transmission associated with a first SRS type, where the first TA may be used for one or more (e.g., other) uplink transmission cases, including PUSCH, PUCCH, PRACH, etc. The first TA may be obtained from a RACH procedure, for example, based on contention-based RACH (e.g., via an initial access mechanism) and / or contention-free RACH (e.g., via a PDCCH order command signaled by DCI). The first TA can be updated via a TA command (TAC) received from higher-layer signaling (e.g., MAC-CE). In the example, the WTRU can be configured and / or indicated to transmit one or more second SRS resources, at least for CLI measurement purposes on the receiver side, which may be indicated by a second SRS type. A second type of SRS may be a non-limiting example of a type of SRS that can and / or may be used to support at least one or more CLI measurements at the receiving end (e.g., other WTRUs, gNBs, other communication devices and / or nodes in the network).One or more other types of transmissions (e.g., any) may be used in place of a transmission, for example, based on a second SRS type. One or more CLI measurements at the receiving end (e.g., a second WTRU) may include one or more of the following: energy level and / or power level measurements (e.g., CLI-RSSI) of configured and / or indicated DL resources (e.g., in the form of zero-power resources, configured CLI measurement resources, etc.); sequence-based and / or correlation-based RS power measurements (e.g., SRS-RSRP) of configured and / or indicated RS sequences and / or resources (e.g., SRS resources that may be transmitted from a WTRU to a second WTRU that may cause CLI); channel quality metric derivations of reported SINR and / or CQI types; and / or similar.

[0187] A WTRU scheduled and / or instructed to transmit an SRS (for example, based on an SRS resource associated with a second SRS type) may receive a configuration and / or indication that the SRS is associated with a second TA (for example, instead of a first TA and / or a different TA). A WTRU may transmit an SRS using the resources of its serving cell, but may transmit it by applying a second TA to its serving cell instead of a first TA that is being used for other UL transmits (e.g., PUCCH, PUSCH, a first SRS type, PRACH, etc.). A WTRU may determine the second TA based, for example, on one or more of the determinations of DL reference timing and / or UL transmit timing associated with the TA.

[0188] Regarding the determination of the DL reference timing, for example, the second TA may be determined as a timing offset relative to the DL reference timing, and the DL reference timing may be based on the (e.g., physical) cell ID (e.g., PCI). In the example, the first TA is determined based on the WTRU's serving cell PCI X, while the second TA can be determined based on the indicated and / or configured PCI Y (e.g., other than the WTRU's serving cell PCI X), which may be configured by RRC and / or MAC-CE and / or indicated by dynamic signaling, e.g., DCI. The WTRU can determine the DL reference timing of the second TA based on measuring one or more signals (e.g., SSB, CSI-RS, etc.) transmitted from the second cell associated with the indicated or configured PCI Y.

[0189] With regard to determining the UL transmission timing associated with a TA, for example, based on DL reference timing determined based on the indicated and / or configured PCI, the WTRU may determine the UL transmission timing based on a second TA (e.g., for transmissions of at least a second SRS type) in response to receiving second TA command signaling that may be separated and / or independent from the TAC message for determining the first TA. In the example, the WTRU may determine a first TA (e.g., applicable to at least a first SRS type) based on DL reception timing D1 (e.g., DL reception timing as the start time of a DL slot or symbol) transmitted by the WTRU's serving cell (e.g., associated with PCI X) and / or based on a first time domain offset O1 which may be determined by a single TAC (e.g., an absolute TA command) and / or by one or more (e.g., multiple) TAC messages received over a period of time (e.g., an accumulated TA process). In response to that decision, for example, the WTRU may determine a first TA that points to a time instance of D1+O1, where O1 can be a positive, negative, or zero value. For example, in a time instance of D1+O1, the WTRU may initiate transmission of a UL signal / channel based on a determination of D1, which may be based on a UL signal / channel that is scheduled and / or configured to be transmitted. The WTRU may determine a second TA (for example, applicable to at least a second SRS type) based on a second time domain offset O2, which may be determined by a second TA command signaling that may be separated and / or independent of a single and / or more (e.g., multiple) TAC messages for determining the first TA, and / or based on a DL receive timing D2 transmitted by a cell and / or gNB and / or TRP associated with PCI Y (e.g., DL receive timing as the start time of a DL slot and / or symbol).For example, based on isolated information in a second TA command signaling, the WTRU may determine a second TA pointing to a time instance of D2+O2, where O2 can be a positive value, a negative value, or zero. In the time instance of D2+O2, the WTRU may initiate the transmission of a UL signal (e.g., at least a second SRS type) based on a determination of D2 which may be based on a UL signal that has been instructed and / or configured to be transmitted.

[0190] The use of a second TA is applicable to a second SRS type (for example, in a second WTRU that is a victim WTRU, for example, for CLI measurement purposes) in the case of a WTRU (for example, as an aggressor WTRU), and may include one or more of the following: The determination of the second TA may be performed based on the DL reference timing of another cell (which may be different from the serving cell of a WTRU having PCI X, associated with PCI Y), where the other cell (which may be a serving cell for a second WTRU, for example, as a victim WTRU). The WTRU (for example, as an aggressor) may transmit a second SRS type so that the second WTRU (for example, as a victim WTRU) can receive the second SRS type within a DL receive window determined based on the serving cell of the second WTRU having PCI Y, for example. On the second WTRU side, for example, the WTRU (e.g., Aggressor WTRU) can apply a second TA (e.g., selectively) when transmitting at least a second SRS type, while the WTRU can apply a first TA (e.g., selectively) when transmitting one or more other UL signals and / or channels to its serving cell (e.g., using PCI X). This can reduce the complexity of CLI measurements on the second WTRU and / or improve CLI measurement accuracy and resource utilization efficiency, for example, by applying a second TA on the WTRU (e.g., Aggressor WTRU) and aligning it with the DL receive window on the second WTRU (e.g., Victim WTRU), which can reduce one or more (e.g., several) repeating SRS symbols (e.g., required SRS symbols) (e.g., or eliminate the need for repetition) of the second SRS type.

[0191] In the example, if a WTRU (e.g., an aggressor WTRU) and a second WTRU (e.g., a victim WTRU) are in the same cell (e.g., having the same PCI Z), the WTRU (e.g., an aggressor WTRU) can determine when to send an SRS (e.g., an SRS of a second SRS type) based on the DL timing of the serving cell associated with the same PCI Z, where the second TA command signaling may be given separately to the WTRU (e.g., still), so that the second TA may be different from the first TA, but both may be derived based on the same DL reference timing having the same PCI Z.

[0192] Regarding information exchange between one or more gNBs (e.g., cells, TRPs, nodes), for example, information content to enable such WTRU-to-WTRU CLI measurements can be exchanged (e.g., via backhaul link signaling, e.g., X2, Xn interface type signaling), and the information content may include one or more of the following: The information content may include WTRU IDs as (e.g., potential) aggressors and / or victims (e.g., in terms of CLI, full-duplex mode, SBFD mode / type, etc.), and each WTRU ID may be associated with its serving cell and / or gNB and / or TRP identifiers, e.g., PCI and / or TRP IDs. One or more WTRU IDs may be associated with SBFD-related configurations such as time and / or frequency positions of one or more UL subbands, DL subbands, flexible subbands, and / or guard bands. In the example, the transmission direction on the flexible subband (e.g., either DL or UL) can be determined via other types of signaling, such as group-common DCI, MAC-CE signaling, and / or DCI scheduling (e.g., actual) DL and / or UL signals and / or channels on the flexible subband. The informational content may include transmit and / or receive resources (e.g., SRS, and / or measurement resources) associated with one or more WTRU IDs. The informational content may include timing advance values ​​(e.g., or timing offset values) associated with the WTRU ID, which may represent how much the current timing is offset in terms of UL transmit timing compared to the DL reference timing associated with the PCI.Timing advance values ​​(e.g., and / or timing offset values) can be delivered from the victim WTRU's serving cell and / or gNB and / or TRP to the aggressor WTRU's serving cell and / or gNB and / or TRP, and / or can be used by the aggressor WTRU's serving cell and / or gNB and / or TRP to signal the aggressor WTRU (e.g., via second TA command signaling) when the victim WTRU and aggressor WTRU are in proximity. Information content may include a pair of WTRU IDs identified as potential aggressor-victim relationships with each other. Information content may include spatial domain-related parameters associated with one or more WTRU IDs. Information content may include power control-related parameters associated with one or more WTRU IDs.

[0193] With respect to the mode of transmit power determination, a WTRU (e.g., Aggressor WTRU) may receive configuration parameters and / or indicators indicating one or more power control (PC) related parameters associated with SRS transmission (e.g., at least for CLI measurement purposes) based on a second SRS type, where the PC related parameters may include one or more of the following: The PC related parameters may include open-loop PC parameters such as P0, α, and path loss determination parameters. The PC related parameters may include closed-loop PC parameters such as closed-loop indices which may be indicated (e.g., dynamically) by DCI. The PC related parameters may include other PC offset parameters used for certain types of advanced full-duplex operation, at least SBFD or subband partial / full overlap FD, etc.

[0194] The WTRU may determine a transmit power value for transmitting a UL signal (e.g., a second SRS type UL signal) based on one or more PC-related parameters, for example, on the condition that the UL signal is transmitted outside the UL subband, for example, for SBFD operation. The WTRU may receive configurations and / or indications regarding the location of the UL subband where the WTRU may be permitted to transmit UL transmissions. The WTRU may be configured to transmit a UL signal (e.g., a second SRS type UL signal for CLI measurement purposes) outside the UL subband (e.g., exceptionally) based on applying UL power adjustments based on the transmit power value determined in the transmission of the UL signal.

[0195] In the example, UL power adjustment (e.g., backoff) may reduce the transmit power value compared to a second transmit power value applied to the transmission of other UL signals / channels, e.g., PUSCH, PUCCH, first SRS type. A UL power-adjusted (e.g., power-reduced) UL signal (e.g., a UL signal of the second SRS type) can be transmitted outside the UL subband (e.g., inside the DL subband and / or guard band), which can be measured by a second WTRU (e.g., a victim WTRU) as a simulated CLI leakage power that can be similarly measured when a WTRU (e.g., an aggressor WTRU) transmits a UL signal within the UL subband at an unadjusted (e.g., unreduced) transmit power. Allowing such direct UL signaling outside the UL subband would enable a second WTRU (e.g., a victim WTRU) to distinguish who transmitted the UL signal (e.g., WTRU-ID, and / or parameters of the transmitted SRS sequence) when one or more (e.g., multiple) aggressor WTRUs transmit such an SRS of a second SRS type.

[0196] In the example, the WTRU may decide to apply one or more PC-related parameters used for a certain type of advanced full-duplex operation / mode, such as SBFD, and / or subband partial / full overlap FD, based on the frequency distance between the UL signal (e.g., an SRS of a second SRS type) and at least one position-related parameter of a subband (e.g., UL subband, DL subband, flexible subband, and / or guard band). In the example, the WTRU may decide to apply one or more PC-related parameters to the transmission of the UL signal based on the frequency (e.g., RB) distance between the boundary of the UL SB and the (e.g., reference) RB of the UL signal (e.g., reference). In the example, the WTRU may decide to apply one or more PC-related parameters to the transmission of the UL signal based on the minimum frequency (e.g., RB) distance between the boundary of the UL SB and the RB of the UL signal (e.g., an SRS resource that may be associated with a second SRS type).

[0197] Embodiments described herein relate to hierarchical SRS configurations and / or CLI measurements that can be implemented via one or more shared resources. A first WTRU can receive configuration information that includes an indication that the first WTRU will measure one or more CLI measurements on time and / or frequency resources associated with one or more (e.g., multiple) SRS transmissions. For example, a first WTRU (e.g., a victim WTRU) can receive a configuration for measuring and / or reporting CLI (e.g., SRS-CLI-RSSI). For example, a first WTRU can receive a configuration for measuring and / or reporting CLI within a DL SB. CLI measurements may include SRS-CLI-RSRP measurements and / or SRS-CLI-RSSI measurements. The configuration may include time and / or frequency resources on which one or more SRS transmissions (e.g., transmissions from one or more second (aggressor) WTRUs) using one or more sequences can be received and / or measured by the first WTRU. One or more SRS transmissions using one or more sequences can be received and / or measured by a first WTRU using the same (e.g., and / or overlapping) time and / or frequency resources (e.g., group SRS transmission). For example, one or more (e.g., multiple) different SRS sequences may be transmitted to the first WTRU by one or more other WTRUs.

[0198] CLI (e.g., SRS-CLI-RSSI) measurements and / or reporting may be periodic, semi-persistent, and / or aperiodic. A first WTRU may receive configuration information indicating one or more SRS sequences associated with a CLI (e.g., SRS-CLI-RSSI) measurement. For example, the configuration information may include indications for one or more SRS sequences for a CLI measurement. For example, a first WTRU may receive sequences used for SRS transmission via one or more MAC-CE and / or DCI indices for selection from an RRC configuration list. SRS sequences may include indices and / or identifiers (IDs).

[0199] The first WTRU can perform one or more CLI measurements on time resources and / or frequency resources. For example, the first WTRU can measure CLI (e.g., SRS-CLI-RSSI) on one or more of the configured time and frequency resources. For example, performing one or more CLI measurements may include measuring multiple SRS transmissions on the same time and / or frequency resource. For example, the first WTRU can perform energy (e.g., and / or power) level measurements on time and frequency resources. To perform CLI measurements, the first WTRU can perform energy level measurements and / or power level measurements on time and frequency resources. For example, if two or more different SRS sequences are used (e.g., transmitted by a second and a third WTRU), the first WTRU can derive SRS-CLI-RSSI by, for example, performing one or more measurements using one or more different SRS sequences and / or combining one or more measurements using predefined and / or preconfigured functions. For example, when one or more (e.g., multiple) different SRS sequences are used, the first WTRU can determine the CLI measurement based on performing the measurement using the different SRS sequences and / or combining the measurement with a predefined and / or preconfigured function.

[0200] The first WTRU can compare one or more CLI measurements to a threshold. The first WTRU can transmit indications for one or more CLI measurements. For example, if a measured CLI (e.g., SRS-CLI-RSSI) is higher than a first threshold and / or two or more different SRS sequences are used, the first WTRU can perform one or more of the following: For example, if it is determined that a measured CLI measurement among one or more CLI measurements is greater than a threshold and multiple SRS sequences are used between time and frequency resources, the first WTRU can perform one or more of the following: determine which SRS sequence among the multiple SRS sequences and transmit an indication for the SRS sequence, transmit the CLI associated with the SRS sequence, and transmit indications for one or more CLI measurements. The first WTRU can determine (for example, and / or attempt to determine) an SRS sequence from among several SRS sequences (e.g., an SRS sequence with the highest CLI or an SRS sequence exceeding a configured second threshold, an SRS sequence with the highest CLI (e.g., SRS-RSRP), and / or an SRS sequence with a CLI exceeding a configured third threshold (e.g., SRS-RSRP)). The first WTRU can report one or more of the determined SRS sequence (e.g., index or ID), the corresponding CLI, and / or the corresponding CLI (e.g., SRS-RSRP) (e.g., if an SRS sequence is determined). The first WTRU can report a CLI measurement (e.g., SRS-CLI-RSSI). If it is determined that one or more measured CLI measurements are below a threshold, the first WTRU can transmit an indication of the measured CLI measurement. For example, if the measured CLI (e.g., SRS-CLI-RSSI) falls below a first threshold, the first WTRU may report the CLI (e.g., SRS-CLI-RSSI).If it is determined that one or more measured CLI measurements are greater than a threshold and that a single SRS sequence was used during the time and frequency resources, and / or if the first WTRU is unable to determine an SRS sequence from among multiple SRS sequences, the first WTRU may perform one or more of the following: transmit an indication of one or more CLI (e.g., SRS-CLI-RSSI) measurements, and / or send a request to the network node to provide the WTRU with another (e.g., a new) measurement configuration having one or more SRS sequences and / or different SRS sequences. For example, if the measured CLI (e.g., SRS-CLI-RSSI) is higher than a first threshold and one SRS sequence (e.g., a single SRS sequence) is used, and / or if the first WTRU is unable to determine an SRS sequence from among SRS sequences, the first WTRU may perform one or more of the following: The first WTRU may report the measured CLI (e.g., SRS-CLI-RSSI). The first WTRU may send a request to the gNB to provide the WTRU with one or more (e.g., multiple) SRS sequences and / or a (e.g., new) measurement configuration having different SRS sequences.

[0201] Regarding the configuration of group SRS measurements, for example, a first WTRU (e.g., a potential victim WTRU) can receive (e.g., via RRC, MAC-CE, DCI) one or more configurations for measuring and / or reporting the received signal strength (e.g., RSSI) based on one or more reference signals (e.g., SRS) received from one or more second WTRUs (e.g., two or more aggressor WTRUs). The WTRU can receive configurations relating to time (window) and / or frequency resources for receiving and / or measuring one or more reference signals (e.g., SRS), where the reference signals may be transmitted from one or more second WTRUs using the same and / or overlapping time and / or frequency resources (e.g., group SRS transmissions).

[0202] In the example, the first WTRU may receive a configuration that performs a group SRS measurement based on periodic, semi-permanent, and / or periodic configurations. In the example, the first WTRU may receive configuration information indicating one or more reference signals (e.g., SRS sequences) configured to be transmitted in a group SRS transmission. For example, the first WTRU may be configured (e.g., via RRC, MAC-CE, DCI) with a list of SRS sequences (e.g., Zadoff-Chu sequences) and / or corresponding parameters (e.g., root index, cyclic shift, comb, hopping, etc.). The first WTRU may receive an indication (e.g., via MAC-CE, DCI) to select one of the SRS sequences from the list (e.g., via one or more indices).

[0203] The first WTRU can receive one or more configurations (e.g., via RRC, MAC-CE, DCI) relating to one or more thresholds corresponding to the measured parameters in the group SRS measurement. In the example, one or more configurations may be used to determine whether the intensity of the received signal is higher or lower than one or more thresholds.

[0204] With regard to the performance of group SRS measurements, the terms SRS-RSSI and SRS-CLI-RSSI may be used interchangeably herein.

[0205] A first WTRU may be configured to measure the intensity, energy, and / or power (e.g., SRS-CLI-RSSI) of a received signal based on configured time and / or frequency resources. For example, the first WTRU can perform energy (e.g., or power) level measurements based on configured time and / or frequency resources. Thus, for example, the first WTRU can measure the total intensity, energy, and / or power of a received signal that can be received from each second WTRU (e.g., Aggressor WTRU) configured to transmit a configured reference signal (e.g., SRS) on the configured time and / or frequency resources.

[0206] Additionally or alternatively, the first WTRU may consist of one or more distinct reference signals (e.g., at least two different SRS sequences) used for group SRS transmission (e.g., by a potential aggressor WTRU). The first WTRU can use the configured reference signals (e.g., different SRS from different aggressor WTRUs) to measure the received power, energy, and / or intensity. Thus, for example, the first WTRU can measure different SRS sequences and / or determine the received SRS-CLI-RSSI by combining the measurements using predefined and / or (pre)configured functions.

[0207] With regard to reporting group SRS measurements, a first WTRU (e.g., a potential victim WTRU) can determine that the measured SRS-CLI-RSSI is higher than a first threshold. In this case, if the WTRU consists of two or more SRS sequences corresponding to one or more different WTRUs (e.g., multiple potential aggressor WTRUs), the first WTRU can decide to perform one or more of the following: For example, the first WTRU may attempt to determine and / or detect one or more SRS sequences received with the highest power, energy, and / or intensity (e.g., implying the aggressor WTRU and / or SRS sequence causing the strongest interference to the first WTRU, e.g., CLI). The first WTRU may consist of one or more different SRS sequences used for group SRS transmission (e.g., by at least two potential aggressor WTRUs). The first WTRU may determine and / or detect a second WTRU that transmitted the detected SRS. In the example, the first WTRU can determine the SRS sequence causing the highest interference (e.g., CLI). In the example, the first WTRU can determine one or more SRS sequences causing interference (e.g., CLI) higher than a second threshold. In the example, the first WTRU can determine the SRS-RSRP based on the detected SRS (e.g., the SRS with the highest CLI and / or the SRS with CLI above a second threshold). Thus, for example, the first WTRU can determine the SRS with the highest measured SRS-RSRP and / or the SRS whose measured SRS-RSRP is higher than a third threshold.For example, the first WTRU may report the determined SRS (e.g., index, indication, ID, SRI, etc., to the gNB) that the first WTRU detected as causing the highest interference (e.g., CLI); the first WTRU may report the detected SRS where the measured received energy, power, intensity, etc., are higher than a second threshold; the first WTRU may report the determined SRS where the measured SRS-RSRP is the highest; the first WTRU may report the determined SRS where the measured SRS-RSRP is higher than a third threshold. Additionally or alternatively, the first WTRU may report the measured SRS-CLI-RSSI.

[0208] A first WTRU (e.g., potential victim WTRU) can determine if the measured SRS-CLI-RSSI is lower than the first threshold. Thus, for example, the first WTRU can report the measured SRS-CLI-RSSI (e.g., to gNB).

[0209] Additionally or alternatively, the first WTRU may determine that the measured SRS-CLI-RSSI is higher than the first threshold; however, the WTRU may determine and / or indicate that in a group SRS transmission, a single SRS (e.g., only a single SRS) is used by a group of second WTRUs (e.g., a potential aggressor WTRU) (for example, this may mean that the WTRU cannot detect and / or distinguish one or more different SRS sequences and / or aggressor WTRUs based on the group SRS transmission). Thus, for example, the first WTRU may decide to report the measured SRS-CLI-RSSI.

[0210] The first WTRU may send a request (e.g., to the gNB) to receive one or more configurations for measuring SRS from one or more other WTRUs (e.g., potential aggressor WTRUs) in a one-to-one SRS measurement. The configurations may include time resources and / or frequency resources for measuring the SRS sequence and / or SRS-RSRP (e.g., as appropriate).

[0211] With respect to group SRS transmissions from one or more WTRUs via one or more shared resources, a WTRU (e.g., a first WTRU) can be configured to transmit SRS based at least on group indication. Such transmissions can be used to detect situations in which a first WTRU causes high interference to a second WTRU. Such SRS transmissions may be called cross-link interference detection (CLID-SRS).

[0212] In this specification, the terms Group SRS and CLID-RS may be used interchangeably.

[0213] The first WTRU can receive (e.g., via RRC, MAC-CE, DCI) one or more configurations for CLID-SRS transmission, including transmission comb offset, number of ports, cyclic shift, allocation of time-domain and / or frequency-domain resources, hopping parameters, spatial relationship information, TCI states, whether the SRS is transmitted periodically, aperiodicly and / or semi-permanently, power control parameters, etc. Such configurations may be included as part of at least one CLID-SRS resource configuration and / or CLID-SRS resource set configuration. The WTRU can be configured to reuse the configuration of another SRS resource and / or SRS resource set for one or more of the parameters described herein. Such an SRS may be called a reference SRS. Identification information for such a reference SRS may be included in the configuration using its SRS resource ID and / or corresponding SRS resource set ID. The first WTRU can consist of one or more TCI states used and / or may be used for CLID-SRS transmission, for example, as part of a CLID configuration. The first WTRU can receive one or more CLID-SRS resource configurations and / or resource set configurations.

[0214] A first WTRU can receive (e.g., via RRC, MAC-CE, DCI) a configuration of one or more group identification information (e.g., group IDs) for the transmission of CLID-SRS. In the example, a first WTRU may belong to one or more WTRU groups. That is, a first WTRU can consist of and / or be indicated (e.g., via RRC, MAC-CE, DCI) two or more group IDs and / or lists of group IDs for the group to which the first WTRU belongs. A first WTRU can receive (e.g., via RRC, MAC-CE, DCI) one or more distinct configurations for one or more (e.g., each) groups (based on the group IDs), where the configurations may include time and / or frequency resources for transmitting power backoff, timing advance, CLID-SRS, etc. One or more (e.g., each) group IDs may be associated with one or more CLID-SRS resource configurations and / or resource set configurations. One or more (for example, each) CLID-SRS resource configuration and / or resource set configurations may be associated with one or more group IDs.

[0215] In the example, the first WTRU may receive a trigger to perform a CLID-SRS transmission, and the trigger may be based on a configuration (e.g., periodic configuration via RRC), a trigger (e.g., semi-persistent and / or aperiodic configuration via MAC-CE, DCI), and / or an activation command (e.g., flagging from a gNB via DCI). Thus, for example, the WTRU may receive a group ID as part of the configuration, trigger, and / or activation command. The first WTRU may determine and / or verify whether the configured, received, and / or indicated group ID is included in the list of group IDs configured and / or indicated to the first WTRU.

[0216] If the first WTRU determines that it belongs to a group of configured, triggered, and / or activated WTRUs (for example, based on a group ID), then the first WTRU may transmit CLID-SRS on the configured and / or indicated time and / or frequency resources, and / or based on the received group SRS transmission configuration and / or associated CLID-SRS resource configuration and / or resource set configuration.

[0217] A WTRU can determine the TCI states applicable to a CLID-SRS transmission based on one or more of the following: For example, in the case of a unified TCI state, the WTRU can determine the TCI states applicable to a CLID-SRS transmission based on the most recently signaled TCI state. The WTRU can determine the TCI states applicable to a CLID-SRS transmission based on an indication of the coresetPoolIndex parameter as part of the CLID-SRS resource(set) configuration corresponding to the indicated group ID. The WTRU can determine the TCI states applicable to a CLID-SRS transmission based on an indication of whether to use a first TCI state or a second TCI state in the signaling, where the first TCI state and / or the second TCI state may be configured as part of the CLID-SRS resource(set) configuration. This signaling may be a signaling that triggers a CLID-SRS transmission.

[0218] The WTRU can determine the transmit power and / or timing advance based on the determined applicable TCI state. Additionally or alternatively, the WTRU can determine the transmit power based on power control parameters configured as part of the CLID-SRS resource(set) configuration.

[0219] The signaling that triggers the transmission of CLID-SRS may include additional information for the transmission of CLID-SRS, such as an indication of a power offset to apply to the transmit power (for example, such a power offset may be applied to the transmit power calculated using an alternative solution), and / or one or more indications of a timing offset to apply to the transmit timing associated with an applicable TCI state, determined using an alternative solution.

Claims

1. A first wireless transceiver unit (WTRU) comprising memory and a processor, The aforementioned processor, Receiving configuration information associated with one or more sounding reference signal (SRS) resources, Receiving an indication for receiving and measuring SRS transmissions in one of one or more SRS resources, and measuring cross-link interference (CLI), wherein the SRS resource is associated with time, Determining the timing offset associated with the aforementioned SRS transmission, Based on the time associated with the SRS resource and the timing offset, determine the time or time window for receiving the SRS transmission. Receiving the SRS transmission based on the aforementioned time or time window, wherein the SRS transmission is transmitted by a second WTRU, Performing one or more measurements on the aforementioned SRS transmission, Sending a message to a network node, wherein the message includes an indication of one or more measurements. A first WTRU configured to perform the following.

2. The first WTRU according to claim 1, wherein the timing offset is a timing advance (TA) for receiving SRS transmissions from the second WTRU, which is different from the TA used by the WTRU to transmit uplink (UL) transmissions.

3. The first WTRU according to claim 1, wherein the timing offset is a delta offset value, and the delta offset value indicates the number of timing advance (TA) instances with respect to the TA value of the uplink (UL) transmission of the first WTRU.

4. The first WTRU according to claim 1, wherein the one or more measurements include an inter-WTRU CLI based on the received SRS transmission.

5. The first WTRU according to claim 4, wherein the inter-WTRU CLI includes an SRS reference signal received power (SRS-RSRP) or a CLI received signal strength indicator (CLI-RSSI) in the UL subband or the downlink (DL) subband, respectively.

6. The aforementioned processor, Receiving SRS recurring information, Based on the aforementioned SRS repetition information, the repeated SRS transmissions are measured, The first WTRU according to claim 1, configured to further perform the following.

7. The first WTRU according to claim 1, wherein the determination of the timing offset associated with the SRS transmission is performed based on the reception of the timing offset associated with the SRS transmission, the timing offset being received via DCI (downlink control information) or MAC CE (medium access control control element).

8. The first WTRU according to claim 1, wherein the processor is configured to perform the one or more measurements, the processor is configured to perform one or more aperiodic measurements based on one or more aperiodic SRS.

9. The first WTRU according to claim 1, wherein the processor is further configured to determine a second timing offset based on the timing at which the first WTRU receives the SRS transmission within a time window and the time of the SRS resource.

10. The first WTRU according to claim 1, wherein the processor is further configured to send a report to a network node, the report including a measured cross-link interference (CLI) value or a second timing offset.

11. A method performed by a first wireless transceiver unit (WTRU), Receiving configuration information associated with one or more sounding reference signal (SRS) resources, Receiving an indication for receiving and measuring SRS transmissions in one of one or more SRS resources, and measuring cross-link interference (CLI), wherein the SRS resource is associated with time, Determining the timing offset associated with the aforementioned SRS transmission, Based on the time associated with the SRS resource and the timing offset, determine the time or time window for receiving the SRS transmission. Receiving the SRS transmission based on the aforementioned time or time window, wherein the SRS transmission is transmitted by a second WTRU, Performing one or more measurements on the aforementioned SRS transmission, Sending a message to a network node, wherein the message includes an indication of one or more measurements. Methods that include...

12. The method according to claim 11, wherein the timing offset is a timing advance (TA) for receiving SRS transmissions from the second WTRU, which is different from the TA used by the first WTRU for transmitting uplink (UL) transmissions.

13. The method according to claim 11, wherein the timing offset is a delta offset value, and the delta offset value indicates the number of timing advance (TA) instances with respect to the TA value of the WTRU uplink (UL) transmission.

14. The method according to claim 11, wherein the one or more measurements include inter-WTRU CLI based on the received SRS transmission.

15. The method according to claim 14, wherein the WTRU-to-CLI includes an SRS reference signal received power (SRS-RSRP) or a CLI received signal strength indicator (CLI-RSSI) in the uplink (UL) subband or the downlink (DL) subband, respectively.

16. The aforementioned method, Receiving SRS recurring information, Based on the aforementioned SRS repetition information, the repeated SRS transmissions are measured, The method according to claim 11, further comprising:

17. The method according to claim 11, wherein the determination of the timing offset associated with the SRS transmission is performed based on the reception of the timing offset associated with the SRS transmission, the timing offset is received via DCI (downlink control information) or MAC CE (medium access control control element).

18. The method according to claim 11, wherein performing the one or more measurements includes performing one or more aperiodic measurements based on one or more aperiodic SRS.

19. The method according to claim 11, further comprising determining a second timing offset based on the timing at which the first WTRU receives the SRS transmission within a time window and the time of the SRS resource.

20. The method according to claim 11, further comprising sending a report to a network node, the report including a measured cross-link interference (CLI) value or a second timing offset.

Images