Channel sounding for cross-link interference (CLI) management with sub-band full-duplex (SBFD)

Abstract

Various aspects of the present disclosure relate to managing cross-link interference (CLI) for dynamic sub-band full-duplex (SBFD). For example, the systems and methods utilize sounding reference signal (SRS) enhancements, where a first UE (e.g., an aggressor UE) utilizes parameters of an SRS to indicate an expected or utilized SBFD sub-band. A second UE (e.g., a victim UE) measures the SRS and obtains an SRS-RSRP and information that identifies the sub-band having the expected CLI. The second UE may then report the obtained information to an associated base station, which can perform various CLI management actions, including scheduling, link adaptation, and so on.

Description

CHANNEL SOUNDING FOR CROSS-LINK INTERFERENCE (CLI) MANAGEMENT WITH SUB-BAND FULL-DUPLEX (SBFD)TECHNICAL FIELD

[0001] This application claims priority to U.S. Provisional Patent Application No. 63 / 573,743, filed on April 3, 2024, entitled CHANNEL SOUNDING FOR CROSS-LINK INTERFERENCE (CLI) MANAGEMENT WITH SUB-BAND FULL-DUPLEX (SBFD), which is hereby incorporated by reference in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to wireless communications, and more specifically to channel sounding for cross-link interference (CLI) management with subband full duplex (SBFD).BACKGROUND

[0003] A wireless communications system may include one or multiple network communication devices, such as base stations, which may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE), or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communications system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers, or the like)). Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G)).

[0004] The wireless communications system may support time division duplexing (TDD), which involves splitting resources between uplink (UL) and downlink (DL) in a time domain. In some cases, one or more network communication devices or usercommunication devices may experience CLI. To mitigate or decrease CLI, the wireless communications system, including the one or more network communication devices or user communication devices, may support use of synchronized (e.g., phase and frequency synchronized) and / or identical patterns of TDD (also referred to herein as TDD patterns). In some other cases, the wireless communications system may support sub-band full-duplex (SBFD), where user communication devices can be configured to transmit UL signals in a sub-band on DL symbols, or transmit DL signals in a sub-band on UL symbols. Although the user communication devices may not have FD capabilities, network communication devices may be configured to include the FD capabilities and perform transmissions within the sub-bands.SUMMARY

[0005] An article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a,” “at least one,” “one or more,” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of’ or “one or more of’ or “one or both of’) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. Further, as used herein, including in the claims, a “set” may include one or more elements.

[0006] The present disclosure relates to methods, apparatuses, and systems that provide enhancements to a sounding reference signal (SRS), such as where a first UE (e.g., an aggressor UE) utilizes parameters of an SRS to indicate an expected or utilized SBFD subband, and a second UE (e.g., a victim UE) measures the SRS and identifies a sub-band having expected CLI.

[0007] A UE for wireless communication is described. The UE be configured to, capable of, or operable to perform one or more operations as described herein. For example, the UE may comprise at least one memory and at least one processor coupled with the at least one memory and configured to cause the UE to receive a first configuration comprising a set of one or more sub-bands, receive a second configuration comprising a set of one or more SRS parameters, wherein the second configuration comprises an association between the set of one or more SRS parameters and the set of one or more sub-bands, determine information associated with the set of one or more sub-bands, select at least one SRS parameter from the set of one or more SRS parameters based on the information and the information and the association between the SRS parameters and the set of one or more sub-bands, and transmit an SRS according to the selected at least one SRS parameter.

[0008] A method performed or performable by the UE is described. The method may comprise receiving a first configuration comprising a set of one or more sub-bands, receiving a second configuration comprising a set of one or more SRS parameters, wherein the second configuration comprises an association between the set of one or more SRS parameters and the set of one or more sub-bands, determining information associated with the set of one or more sub-bands, selecting at least one SRS parameter from the set of one or more SRS parameters based on the information and the information and the association between the SRS parameters and the set of one or more sub-bands, and transmitting an SRS according to the selected at least one SRS parameter.

[0009] A processor for wireless communication is described. The processor may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the processor may comprise at least one memory and at least one controller coupled with the at least one memory and configured to cause the processor to receive a first configuration comprising a set of one or more sub-bands, receive a second configuration comprising a set of one or more SRS parameters, wherein the second configuration comprises an association between the set of one or more SRS parameters and the set of one or more sub-bands, determine information associated with the set of one or more sub-bands, select at least one SRS parameter from the set of one or more SRS parameters based on the information and the information and the association between theSRS parameters and the set of one or more sub-bands, and transmit an SRS according to the selected at least one SRS parameter.

[0010] In some implementations of the UE, processor, and method described herein, the first configuration comprises an SBFD configuration, and wherein one or more sub-bands of the set of one or more sub-bands comprises full-duplex-sub-bands.

[0011] In some implementations of the UE, processor, and method described herein, each sub-band of the set of one or more sub-bands comprises multiple physical resource blocks (PRBs).

[0012] In some implementations of the UE, processor, and method described herein, the set of one or more SRS parameters comprises: a resource in a time domain, a frequency domain, a spatial domain, a code domain, or combinations thereof, a resource set, a transmission power, an antenna port, an antenna switching, a comb pattern, a cyclic shift, a repetition factor, a shift in the frequency domain, the time domain, or a combination thereof, a frequency hopping pattern, a periodicity, an offset, or a combination thereof, or spatial relation information.

[0013] In some implementations of the UE, processor, and method described herein, the association between the set of one or more SRS parameters and the set of one or more subbands indicates that a frequency range for the SRS matches a corresponding frequency range of a sub-band of the set of one or more sub-bands.

[0014] In some implementations of the UE, processor, and method described herein, the information indicates a sub-band based on the one or more sub-bands or whether the subband of the one or more sub-bands is active for wireless communication.

[0015] In some implementations of the UE, processor, and method described herein, the information indicates a frequency domain range for a sub-band of the set of one or more sub-bands.

[0016] In some implementations of the UE, processor, and method described herein, the information indicates a time domain range for a sub-band of the set of one or more subbands.

[0017] In some implementations of the UE, processor, and method described herein, the UE, processor, and method may further be configured to, capable of, performed, performable, or operable to receive a radio resource control (RRC) message, a medium access control (MAC) control element (CE), or a downlink control information (DCI), or combinations thereof, indicating the information associated with the set of one or more subbands.

[0018] A UE for wireless communication is described. The UE be configured to, capable of, or operable to perform one or more operations as described herein. For example, the UE may comprise at least one memory and at least one processor coupled with the at least one memory and configured to cause the UE to receive a first configuration indicating one or more sub-bands, receive a second configuration associated with a CLI report, wherein the second configuration comprises SRS parameter values and information that associates the SRS parameter values and the one or more sub-bands, measure one or more CLI values based on the second configuration, obtain one or more SRS parameter values based on the measured one or more CLI values, determine additional information associated with the one or more sub-bands based on the one or more SRS parameter values and the information that associates the SRS parameter values and the one or more subbands, and transmit a CLI report to a network entity that includes the measured one or more CLI values, the determined additional information, or combinations thereof.

[0019] A method performed or performable by the UE is described. The method may comprise receiving a first configuration indicating one or more sub-bands, receiving a second configuration associated with a CLI report, wherein the second configuration comprises SRS parameter values and information that associates the SRS parameter values and the one or more sub-bands, measuring one or more CLI values based on the second configuration, obtaining one or more SRS parameter values based on the measured one or more CLI values, determining additional information associated with the one or more subbands based on the one or more SRS parameter values and the information that associates the SRS parameter values and the one or more sub-bands, and transmitting a CLI report to a network entity that includes the measured one or more CLI values, the determined additional information, or combinations thereof.

[0020] A processor for wireless communication is described. The processor may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the processor may comprise at least one memory and at least one controller coupled with the at least one memory and configured to cause the processor to receive a first configuration indicating one or more sub-bands, receive a second configuration associated with a CLI report, wherein the second configuration comprises SRS parameter values and information that associates the SRS parameter values and the one or more sub-bands, measure one or more CLI values based on the second configuration, obtain one or more SRS parameter values based on the measured one or more CLI values, determine additional information associated with the one or more subbands based on the one or more SRS parameter values and the information that associates the SRS parameter values and the one or more sub-bands, and transmit a CLI report to a network entity that includes the measured one or more CLI values, the determined additional information, or combinations thereof.

[0021] In some implementations of the UE, processor, and method described herein, the first configuration is associated with an SBFD operation.

[0022] In some implementations of the UE, processor, and method described herein, the measured one or more CLI values comprises reference signal received power (RSRP) values.

[0023] In some implementations of the UE, processor, and method described herein, each sub-band of the one or more sub-bands comprises multiple PRBs.

[0024] In some implementations of the UE, processor, and method described herein, the SRS parameter values are one or more SRS parameters, including: a resource in a time domain, a frequency domain, a spatial domain, a code domain, or combinations thereof, a resource set, a transmission power, an antenna port, an antenna switching, a comb pattern, a cyclic shift, a repetition factor, a shift in the frequency domain, the time domain, or a combination thereof, a frequency hopping pattern, a periodicity, an offset, or a combination thereof, or spatial relation information.

[0025] In some implementations of the UE, processor, and method described herein, the information that associates the SRS parameter values and the one or more sub-bands indicates that a frequency range for the SRS is identical to a frequency range of a sub-band of the one or more sub-bands, the at least one processor is configured to cause the UE to obtain the frequency range for the SRS based on the measured one or more CLI values and to determine the frequency range is identical to the frequency range of the sub-band.

[0026] In some implementations of the UE, processor, and method described herein, the additional information associated with the one or more sub-bands comprises information that indicates whether a sub-band of the one or more sub-bands is active or selected for communication.

[0027] In some implementations of the UE, processor, and method described herein, the additional information associated with the one or more sub-bands comprises information that identifies which sub-band of the one or more sub-bands is active or selected for communication.

[0028] In some implementations of the UE, processor, and method described herein, the additional information associated with the one or more sub-bands comprises information identifying a frequency-domain range for a sub-band of the one or more sub-bands indicated by PRBs or megahertz (MHz).

[0029] In some implementations of the UE, processor, and method described herein, the information associated with the one or more sub-bands comprises information identifying a frequency-domain range for a sub-band of the one or more sub-bands indicated by symbols, slots, subframes, frames, or milliseconds (ms).

[0030] A network entity for wireless communication is described. The network entity may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the network entity may comprise at least one memory and at least one processor coupled with the at least one memory and configured to cause the network entity to transmit to a UE a first configuration that comprises information associated with one or more sub-bands, transmit to the UE a second configuration associated with an SRS, wherein the second configuration includes one or more SRSparameter values, determine additional information associated with the one or more subbands, determine at least one SRS or at least one SRS parameter value based on the additional information, and transmit to the UE an indication of the determined at least one SRS or at least one SRS parameter value.

[0031] A method performed or performable by the network entity is described. The method may comprise transmitting to a UE a first configuration that comprises information associated with one or more sub-bands, transmitting to the UE a second configuration associated with an SRS, wherein the second configuration includes one or more SRS parameter values, determining additional information associated with the one or more subbands, determining at least one SRS or at least one SRS parameter value based on the additional information, and transmitting to the UE an indication of the determined at least one SRS or at least one SRS parameter value.

[0032] In some implementations of the network entity and method described herein, the network entity and method may further be configured to, capable of, performed, performable, or operable to determine at least one sub-band of the one or more sub-bands for communication with the UE.

[0033] In some implementations of the network entity and method described herein, the at least one SRS or at least one SRS parameter value is based on the determined at least one sub-band.

[0034] In some implementations of the network entity and method described herein, the network entity and method may further be configured to, capable of, performed, performable, or operable to transmit the indication of the determined at least one SRS or at least one SRS parameter value to the UE via an RRC message, a MAC CE message, a DCI message, or combinations thereof.

[0035] In some implementations of the network entity and method described herein, the network entity and method may further be configured to, capable of, performed, performable, or operable to transmit, to another network entity, information that identifies the first configuration, the second configuration and an indication of associations betweenthe SRS or the one or more SRS parameter values, the one or more sub-bands, and the additional information.

[0036] In some implementations of the network entity and method described herein, the indication of associations between the SRS or the one or more SRS parameter values, the one or more sub-bands, and the additional information comprises an indication of an association between at least one SRS or at least one SRS parameter value and at least one sub-band for communication with the UE.

[0037] In some implementations of the network entity and method described herein, the network entity and method may further be configured to, capable of, performed, performable, or operable to transmit the information to the another network entity via an Xn interface or an X2 interface.

[0038] A network entity for wireless communication is described. The network entity may be configured to, capable of, or operable to perform one or more operations as described herein. For example, the network entity may comprise at least one memory and at least one processor coupled with the at least one memory and configured to cause the network entity to transmit, to a UE, a configuration associated with one or more CLI reports, wherein the configuration comprises one or more sounding reference signals SRSs or one or more SRS parameter values, receive, from the UE, one or more CLI measurement reports, determine at least one SRS or SRS parameter value from the one or more CLI reports, and determine additional information associated with one or more sub-bands based on the determined at least one SRS or SRS parameter value.

[0039] A method performed or performable by the network entity is described. The method may comprise transmitting, to a UE, a configuration associated with one or more CLI reports, wherein the configuration comprises one or more sounding reference signals SRSs or one or more SRS parameter values, receiving, from the UE, one or more CLI measurement reports, determining at least one SRS or SRS parameter value from the one or more CLI reports, and determining additional information associated with one or more subbands based on the determined at least one SRS or SRS parameter value.

[0040] In some implementations of the network entity and method described herein, the network entity and method may further be configured to, capable of, performed, performable, or operable to determine at least one sub-band from the one or more subbands is for communication with another UE.

[0041] In some implementations of the network entity and method described herein, the at least one SRS or SRS parameter value is based on the determined at least one sub-band.

[0042] In some implementations of the network entity and method described herein, the network entity and method may further be configured to, capable of, performed, performable, or operable to receive, from another network entity, information identifying the one or more SRSs or the one or more SRS parameter values, the one or more sub-bands, and an indication of associations between the one or more SRSs or the one or more SRS parameter values, the one or more sub-bands, and the additional information.

[0043] In some implementations of the network entity and method described herein, the indication of associations between the one or more SRSs or the one or more SRS parameter values, the one or more sub-bands, and the additional information comprises an indication of an association between at least one SRS or at least one SRS parameter value and at least one sub-band for communication with a UE served by the another network entity.

[0044] In some implementations of the network entity and method described herein, the network entity and method may further be configured to, capable of, performed, performable, or operable to cause the network entity to transmit the information to the another network entity via an Xn interface or an X2 interface.BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 illustrates an example of a wireless communications system in accordance with aspects of the present disclosure.

[0046] Figure 2 illustrates an example block diagram that depicts a wireless cell in accordance with aspects of the present disclosure.

[0047] Figures 3 A-3B illustrate example diagrams that depict a comparison of TDD and SBFD in accordance with aspects of the present disclosure.

[0048] Figure 4 illustrates an example diagram that depicts CLI between network devices in accordance with aspects of the present disclosure.

[0049] Figures 5A-5B illustrate example diagrams that depict exchanging sub-band information for dynamic SBFD between UEs in accordance with aspects of the present disclosure.

[0050] Figure 6 illustrates an example of a user equipment (UE) in accordance with aspects of the present disclosure.

[0051] Figure 7 illustrates an example of a processor in accordance with aspects of the present disclosure.

[0052] Figure 8 illustrates an example of a network equipment (NE) in accordance with aspects of the present disclosure.

[0053] Figure 9 illustrates a flowchart of a method performed by a UE in accordance with aspects of the present disclosure.

[0054] Figure 10 illustrates a flowchart of a method performed by a UE in accordance with aspects of the present disclosure.

[0055] Figure 11 illustrates a flowchart of a method performed by an NE in accordance with aspects of the present disclosure.

[0056] Figure 12 illustrates a flowchart of a method performed by an NE in accordance with aspects of the present disclosure.DETAILED DESCRIPTION

[0057] The measurement of CLI between UEs (e.g., UE-to-UE CLI) includes one UE transmitting an SRS and a second UE measuring a signal strength of the SRS (e.g., measuring the SRS-RSRP) and reporting the measured value to the network. However, there is no current support for UE-to-UE CLI measurements for UEs served by different base stations, for beam-based transmission (Tx) or reception (Rx) of the SRS, for reporting under dynamic scenarios, and so on.

[0058] For example, a current approach to handling CLI for SBFD is to configure a first UE with an SRS in a UL sub-band of the SBFD and configure a second UE with SRS- RSRP measurement and reporting. While such configurations can facilitate CLI for semistatic SBFD (e.g., SBFD where a UL sub-band does not change over short time periods), the approach fails when dynamic SBFD is implemented by a wireless communications system.

[0059] Under dynamic SBFD, the sub-band on which a UE (e.g., a first UE) transmits UL signals may not be static, and thus may not be known to other devices (e.g., a second UE or an associated gNB). While the other devices may assume the UE causes CLI, the changing sub-band may lead to an underutilization of resources when the other devices assume certain resources (e.g., a maximum bandwidth or certain slots / symbols) for CLI.

[0060] Further, while two base stations associated with the UEs may perform dynamic signaling in order to exchange information for CLI measurement, such dynamic signaling can significantly utilize these resources (e.g., over a backhaul interface), and may not be suitable for implementation.

[0061] The systems and methods described herein provide solutions to handling CLI for dynamic SBFD. For example, the systems and methods utilize SRS enhancements, where a first UE (e.g., an aggressor UE) utilizes parameters of an SRS to indicate an expected or utilized SBFD sub-band. A second UE (e.g., a victim UE) measures the SRS and obtains an SRS-RSRP and information that identifies the sub-band having the expected CLI. The second UE may then report the obtained information to an associated base station, which can perform various CLI management actions, including scheduling, link adaptation, and so on.

[0062] Thus, the wireless communications system can utilize SRS parameters for SRSs utilized during CLI measurement and / or management to measure and mitigate CLI during dynamic SBFD operations, among other benefits.

[0063] Figure 1 illustrates an example of a wireless communications system 100 in accordance with aspects of the present disclosure. The wireless communications system 100 may include one or more NE 102, one or more UE 104, and a core network (CN) 106.The wireless communications system 100 may support various radio access technologies. In some implementations, the wireless communications system 100 may be a 4G network, such as an LTE network or an LTE- Advanced (LTE-A) network. In some other implementations, the wireless communications system 100 may be a NR network, such as a 5G network, a 5G- Advanced (5G-A) network, or a 5G ultrawideband (5G-UWB) network. In other implementations, the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20. The wireless communications system 100 may support radio access technologies beyond 5G, for example, 6G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA), frequency division multiple access (FDMA), or code division multiple access (CDMA), etc.

[0064] The one or more NE 102 may be dispersed throughout a geographic region to form the wireless communications system 100. One or more of the NE 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a network function, a network entity, a radio access network (RAN), a NodeB, an eNodeB (eNB), a next-generation NodeB (gNB), or other suitable terminology. An NE 102 and a UE 104 may communicate via a communication link, which may be a wireless or wired connection. For example, an NE 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.

[0065] An NE 102 may provide a geographic coverage area for which the NE 102 may support services for one or more UEs 104 within the geographic coverage area. For example, an NE 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc.) according to one or multiple radio access technologies. In some implementations, an NE 102 may be moveable, for example, a satellite associated with a non-terrestrial network (NTN). In some implementations, different geographic coverage areas associated with the same or different radio access technologies may overlap, but the different geographic coverage areas may be associated with different NE 102.

[0066] The one or more UE 104 may be dispersed throughout a geographic region of the wireless communications system 100. A UE 104 may include or may be referred to as a remote unit, a mobile device, a wireless device, a remote device, a subscriber device, a transmitter device, a receiver device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (loT) device, an Internet-of-Everything (loE) device, or machine-type communication (MTC) device, among other examples.

[0067] A UE 104 may be able to support wireless communication directly with other UEs 104 over a communication link. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link may be referred to as a sidelink. For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.

[0068] An NE 102 may support communications with the CN 106, or with another NE 102, or both. For example, an NE 102 may interface with other NE 102 or the CN 106 through one or more backhaul links (e.g., SI, N2, N2, or network interface). In some implementations, the NE 102 may communicate with each other directly. In some other implementations, the NE 102 may communicate with each other or indirectly (e.g., via the CN 106. In some implementations, one or more NE 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC). An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs).

[0069] The CN 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The CN 106 may be an evolved packet core (EPC), or a 5G core (5GC), which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management functions (AMF)) and a user plane entity that routes packets orinterconnects to external networks (e.g., a serving gateway (S-GW), a Packet Data Network (PDN) gateway (P-GW), or a user plane function (UPF)). In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc.) for the one or more UEs 104 served by the one or more NE 102 associated with the CN 106.

[0070] The CN 106 may communicate with a packet data network over one or more backhaul links (e.g., via an SI, N2, N2, or another network interface). The packet data network may include an application server. In some implementations, one or more UEs 104 may communicate with the application server. A UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the CN 106 via an NE 102. The CN 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server using the established session (e.g., the established PDU session). The PDU session may be an example of a logical connection between the UE 104 and the CN 106 (e.g., one or more network functions of the CN 106).

[0071] In the wireless communications system 100, the NEs 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers)) to perform various operations (e.g., wireless communications). In some implementations, the NEs 102 and the UEs 104 may support different resource structures. For example, the NEs 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the NEs 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5 G and among other suitable radio access technologies, the NEs 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures). The NEs 102 and the UEs 104 may support various frame structures based on one or more numerologies.

[0072] One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., / r=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., / r=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe.A second numerology (e.g., / r=l) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., / r=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g., / r=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., / r=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.

[0073] A time interval of a resource (e.g., a communication resource) may be organized according to frames (also referred to as radio frames). Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.

[0074] Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e., / r=0, jU=l, / r=2, jU=3, / r=4) associated with respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols). In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing), a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g., / r=0) associated with a first subcarrier spacing (e.g., 15 kHz) may be used interchangeably between subframes and slots.

[0075] In the wireless communications system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz - 7.125 GHz), FR2 (24.25 GHz - 52.6 GHz), FR3 (7.125 GHz - 24.25 GHz), FR4 (52.6 GHz - 114.25 GHz), FR4a or FR4-1 (52.6 GHz - 71 GHz), and FR5 (114.25 GHz - 300 GHz). In some implementations, the NEs 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands. In some implementations, FR1 may be used by the NEs 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data). In some implementations, FR2 may be used by the NEs 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.

[0076] FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies). For example, FR1 may be associated with a first numerology (e.g., / r=0), which includes 15 kHz subcarrier spacing; a second numerology (e.g., / r=l), which includes 30 kHz subcarrier spacing; and a third numerology (e.g., / r=2), which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies). For example, FR2 may be associated with a third numerology (e.g., / r=2), which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g., / r=3), which includes 120 kHz subcarrier spacing.

[0077] Figure 2 illustrates an example block diagram that depicts a wireless cell 200 in accordance with aspects of the present disclosure. The wireless cell includes the UE 104 connected to the NE 102, such as a base station or gNB. As described herein, the NE 102 may be a RAN node operating via 4G, 5G, or 6G standard, and may be implemented as a TRP, a customer premises equipment (CPE), an integrated access / backhaul (IAB) node, a relay, and so on. Generally, the UE 104 transmits to the NE 102 over an UL channel 210, and the NE 102 transmits to the UE over a DL channel 220.

[0078] As described herein, the UE 104 may be configured with an SBFD resource configuration. Via SBFD, a sub-band in a bandwidth of the wireless link or channel (e.g., UL channel 210 and / or DL channel 220) is configured to perform communication in adirection that is different from the direction of communication in the rest of the bandwidth. For example, a UL sub-band on a DL symbol refers to a sub-band within the DL bandwidth that may be used for UL communications. Figures 3A-3B illustrate example diagrams that depict a comparison of TDD and SBFD in accordance with aspects of the present disclosure.

[0079] For TDD, as shown in Figure 3A, a bandwidth 300 includes multiple periodicities, each having DL time resources 310 (e.g., slots or symbols) and UL time resources 320 (e.g., slots or symbols.

[0080] For SBFD, as shown in Figure 3B, a bandwidth 350 includes a UL sub-band 370 that splits the bandwidth 350 into two or three sub-bands - one UL sub-band adjacent to one or two DL sub-bands 360. The remaining DL resources may also be referred to as subbands. Thus, sub-band configurations can include: a UL sub-band configured in a DL bandwidth, two DL sub-bands and a UL sub-band (all configured separately), two DL subbands configured in a UL bandwidth, and so on.

[0081] In some cases, the bandwidth 350 may also include one or more guard bands 375, which can be explicitly configured or implicitly determined. A guard band 375 may be located between adjacent sub-bands, such as between a DL sub-band and a UL sub-band. The guard band 375 may be configured as a number of physical resource blocks (PRBs) on which the UE 104 does not receive or transmit signals.

[0082] As described herein, a sub-band may be configured or indicated as one or more PRBs or resource block groups (RBGs). A sub-band may be configured by the RRC and / or indicated by L1 / L2 signaling. For example, a sub-band may be configured by two parameters, such as {Start-RB, Number-of-RBs} , {Start-RB, End-RB}, and so on.

[0083] PRBs in a communication bandwidth (e.g., frequency band, carrier, CC, bandwidth partition (BWP)) may be divided into groups of N consecutive RBs, wherein N is an integer specified by the standard or indicated by the network. Example values for N are 1, 2, 4, and so on. If the bandwidth is ARBPRBs, the bandwidth may be divided into M groups of N consecutive PRBs, wherein M = [ARB / A],

[0084] If a group of N consecutive RBs is referred to as an RBG, a sub-band may be indicated by {Start-RBG, Number-of-RBGs} , {Start-RBG, End-RBG}, or more generally by a bitmap of length M in which each bit may indicate whether an associated RBG is included (e.g., if bit=’ 1 ’) or not included (e.g., if bit=’O’). In some cases, when the number PRBs / VRBis not an integer multiple of N, then the first RBG and / or the last RBG may comprise a smaller number of PRBs than N. Whether this is applicable to the first RBG or the last RBG may be specified by the standard or indicated by the network

[0085] Typically, wireless communications systems perform half-duplex operations, such as by employing transceivers that perform either Tx or RX using one antenna. However, when operating SBFD (or other advanced duplexing), the UE 104 or the NE 102 may communicate in DL and UL simultaneously. For example, dynamic / flexible TDD (d / f- TDD) and sub-band full-duplex (SBFD) allow cells in a vicinity to use the same resources in time and / or frequency domains for both DL and UL transmissions. However, this simultaneous operation may lead to CLI between base stations and / or between UEs.

[0086] Figure 4 illustrates an example diagram 400 that depicts CLI between network devices in accordance with aspects of the present disclosure. As shown BS-to-CBS CLI occurs between base stations 410 and 415 (e.g., BS2 and BS1) and UE-to-UE CLI occurs between UEs 420 and 425 (e.g., UE2 and UE1).

[0087] In some embodiments, a UE (e.g., a first UE) indicates a UL sub-band to be used by selecting SRS parameters or parameter values. For example, parameters or parameter values of an SRS can include or be based on:

[0088] a resource in a time domain, a frequency domain, a spatial domain, a code domain, or combinations thereof;

[0089] a resource set;

[0090] a transmission power;

[0091] an antenna port (e.g., a number of antenna ports is identified by a higher layer parameter nrofSRS-Ports ,

[0092] an antenna switching (e.g., transmitting an SRS using Rx antennas);

[0093] a comb pattern (e.g., a transmission comb number is identified in a higher-layer parameter transmissionComby,

[0094] a cyclic shift (e.g., a cyclic shift aLfor an antenna port is identified in part by a higher layer parameter transmissionComby,

[0095] a repetition factor (e.g., a number of SRS transmissions in a slot)

[0096] a shift in the frequency domain, the time domain, or a combination thereof;

[0097] a frequency hopping pattern (e.g., a number of hops for SRS transmission hopping for an SRS resource configured by SRS-PosResource is identified by a higher layer parameter SRShoppingNrofHopsy,

[0098] a periodicity, an offset (e.g., a slot offset), or a combination thereof; and / or

[0099] spatial relation information (e.g., configured per SRS resource).

[0100] Figures 5A-5B illustrate example diagrams that depict exchanging sub-band information for dynamic SBFD between UEs in accordance with aspects of the present disclosure.

[0101] Figure 5A depicts a first information exchange 500. A UE 510 (e.g., a first UE, or UE 1) is associated with or served by a base station 515 (e.g., a first base station, or BS 1), and a UE 520 (e.g., a second UE, or UE 2), is associated with or served by a base station 525 (e.g., a second base station, or BS 2).

[0102] In step 1, the base stations (e.g., gNBs), BS 1 and BS 2, exchange information identifying SRS configuration parameters. For example, the BS 1 indicates potential SBFD UL sub-band configurations and associated SRS parameters in an SRS configuration.

[0103] In step 2, the BS 1 configures the UE 1 (e.g., via RRC) with an SRS and one or more parameters associated with the potential SBFD UL sub-bands. For example, the one or more parameters may include a first SRS parameter associated with a first UL sub-band, a second SRS parameter associated with a second UL sub-band, and so on. The sub-bands may be identified, distinguished, and / or represented by a bandwidth, a frequency location or range, and so on.

[0104] In step 3, which may also follow step 1, using the received information identifying the SBFD configuration and the SRS configuration, the BS 2 configures the UE 2 (e.g., via RRC) with CLI measurement and reporting. The UE 2 measures / obtains the CLI on the SRS of the UE 1.

[0105] In step 4, the BS 1 transmits an indication of a sub-band to the UE 1. The indication may include an indication of a SBFD UL sub-band or a UL sub-band parameters (e.g., an SRS bandwidth or frequency location / range). The BS 1 may send the indication to the UE 1 via a configuration (e.g., RRC), an activation (e.g., MAC CE), or triggering (e.g., DCI).

[0106] In step 5, the UE 1 determines SRS parameters associated with the indication of the UL sub-band. In step 6, the UE 1 transmits an SRS according to or based on the SRS parameters.

[0107] In step 7, the UE 2 monitors the SRS reception on resources configured for the SRS (see step 3), detects the SRS, and measures the detected SRS. The UE 2 performs a CLI measurement to obtain information, including an SRS-RSRP as a measure of potential CLI, and one or more SRS parameters associated with a UL sub-band.

[0108] In step 8, the UE 2 reports the measured information to the BS 2. For example, the UE 2 may indicate to the BS 2 a value of the measured SRS-RSRP and / or the obtained SRS parameters.

[0109] In step 9, the BS 2 obtains the information and an associated UL sub-band and, in step 10, uses the information for scheduling communications with the UE 2, link adaptation, and so on. The BS 2 may obtain the expected CLI based on the SRS-RSRP and / or the SBFD sub-band based on the SRS parameters.

[0110] In some cases, the UE 2 may indicate the obtained SRS parameter to the BS 2 only when one or more parameters have changed since a latest associated SRS-RSRP measurement and / or reporting.

[0111] The following example RRC configurations and information exchanges may be implemented when exchanging information between network devices (e.g., between base stations, between UEs, and / or between a base station and a UE).

[0112] In a first example, the BS 1 configures the UE 1 with multiple SBFD sub-band candidates. Also, the BS 1 configures the UE 1 with multiple SRS configurations, where each SRS configuration includes an indication of an association with one or more SBFD sub-band candidates. An example ASN.l is as follows:SRS-Config : : = SEQUENCE { sbfd-Subband-Index INTEGER (E.maxNrofSBFD-Subbands) OPTIONAL, — Cond dynamic SBFD

[0113] Next, the UE 1 transmits the SRS as configured upon determining that the associated SBFD sub-band indicated by the parameter sbfd-Subband-Index is active. The UE 2 may then determine that the associated SBFD sub-band is active upon detecting that the SRS is transmitted.

[0114] In a second example, an association with the SBFD sub-band is indicated in the SRS resource set configuration. An example ASN.l is as follows:SRS-ResourceSet ::= SEQUENCE ] usage ENUMERATED {beamManagement, codebook, nonCodebook, antennaSwitching, sbfd}, sbfd-Subband-Index INTEGER (E.maxNrofSBFD-Subbands) OPTIONAL, — Cond dynamic SBFD

[0115] Next, the UE 1 transmits the SRS as configured upon determining that the associated SBFD sub-band indicated by the parameter sbfd-Subband-Index is active. The UE 2 may then determine that the associated SBFD sub-band is active upon detecting that the SRS is transmitted.

[0116] In a third example, an association with the SBFD sub-band is indicated in the SRS resource configuration. An example ASN.l is as follows:SRS-Resource ::= SEQUENCE { srs-Resourceld SRS-Resourceld,sbfd-Subband-Index INTEGER (L.maxNrofSBFD-Subbands) OPTIONAL, — Cond dynamic SBFD

[0117] Next, the UE 1 transmits the SRS as configured upon determining that the associated SBFD sub-band indicated by the parameter sbfd-Subband-Index is active. The UE 2 may then determine that the associated SBFD sub-band is active upon detecting that the SRS is transmitted.

[0118] In a fourth example, one or multiple SRS parameters in the SRS resource configuration may be associated one-to-one with one or multiple SBFD sub-bands. An example ASN.1 is as follows:SRS-Resource ::= SEQUENCE { srs-Resourceld SRS-Resourceld, sequenceld INTEGER (0 .1023), sequenceld-sbfd SEQUENCE(SIZE (L.maxNrofSBFD-Subbands) OFINTEGER (0..1023) OPTIONAL, - Cond dynamic SBFD

[0119] In this example, multiple values of the sequence ID are indicated, where each sequence ID is associated with one or multiple SBFD sub-bands. The UE 1 transmits the SRS with the sequence ID that is associated with a currently active SBFD sub-band. The UE 2 may then determine that the associated SBFD sub-band is active upon detecting that the SRS is transmitted with the sequence ID. The UE 2 may monitor SRS transmissions with all the sequence IDs in order to determine the sequence ID that is used.

[0120] In some cases, the UE 2 may be configured with an SRS-RSRP reporting, where similar parameters are indicated to the UE 2 for SRS-RSRP measurement and reporting. Furthermore, the same configuration, or a different configuration, may indicate to the UE 2 to report one or more parameters, such as the sequence ID of the SRS, upon detecting the transmission of an SRS with the one or more parameters.

[0121] In some embodiments, the BS 1 and the BS 2 may exchange information of association between SRS parameters and SBFD sub-bands. Figure 5B depicts a second information exchange 550, which includes the exchange of association informationbetween the base stations. In some cases, the information exchange 550 can be utilized for UE configurations that follow a legacy specification, and, thus, may be used with backhaul IE signaling (and not a Uu link specifications).

[0122] Similar to the information exchange 500, the information exchange 500 also includes a loop of information for every SRS and SRS-RSRP reporting. For example, after step 2, where the BS 1 configures the UE 1 with an SRS and one or more parameters associated with the potential SBFD UL sub-bands, and / or step 3, where the BS 2 configures the UE 2 with CLI measurement and reporting, the BS 1 determines an SBFD sub-band and determines to activate and / or trigger the SRS.

[0123] In step 5, the BS 1 sends an activation / triggering message to the UE 1 to trigger the transmission of an SRS by the UE 1 (step 6), as described herein.

[0124] In step 7, where the UE 2 measures the SRS-RSRP, in step 8, the UE 2 reports the measured SRS-RSRP, and in steps 9 / 10, the BS 2 obtains the expected CLI based on SRS-RSRP and / or SBFD sub-band based on SRS association information, and performs scheduling, link adaptations, and so on.

[0125] In some embodiments, some or all the steps of the information exchange 500 may be combined or integrated with some or all the steps of the information exchange 550. In a first example, the BS 1 may configure the UE 1, as shown in Figure 5A, and indicate a sub-band to the UE 1 (e.g., step 4 of the information exchange 500). Following the example, the BS 2 may configure the UE 2, as shown in Figure 5B, and obtain measurement reports from the UE 2 that may be backward compatible (e.g., with respect to UE specifications).

[0126] In a second example, the BS 1 may configure the UE 1, as shown in Figure 5B, and indicate an SRS activation / triggering to the UE 1 (e.g., step 5 of the information exchange 550), which may be backward compatible (e.g., with respect to UE specifications). Following the example, the BS 2 may configure the UE 2, as shown in Figure 5A, and obtain additional SRS parameters in addition to the measurement reports.

[0127] In some cases, the base stations may configure the UEs based on capability information reported by the UEs to the base stations. For example, If the UE 1 indicates acapability to transmit SRS and if the UE 2 indicates a capability to measure SRS-RSRP and / or obtain additional SRS parameters, as shown in Figure 5A, then the BS 1 and the BS 2 may configure their respective UEs as shown in Figure 5 A.

[0128] As another example, if the UE 1 indicates a capability to transmit SRS, as shown in Figure 5A, but the UE 2 does not indicate a capability to measure SRS-RSRP and / or obtain additional SRS parameters, as shown in Figure 5A, then the BS 1 may configure the UE 1 as shown in Figure 5A while the BS 2 may configure the UE 2 as shown in Figure 5B (which may be backward compatible for legacy UEs).

[0129] However, in some cases, if the UE 1 does not indicate a capability to transmit SRS, as shown in Figure 5A, but the UE 2 indicates a capability to measure SRS-RSRP and / or obtain additional SRS parameters, as shown in Figure 5A, then the BS 1 may configure the UE 1 based on the information exchange 550 (which may be backward compatible for legacy UEs) while the BS 2 may configure the UE 2 based on the information exchange 500.

[0130] Further, when neither UE indicates a capability to transmit SRS as shown in Figure 5A, then both the BS 1 and the BS 2 may configure their respective UEs based on the information exchange 550 (which may be backward compatible for legacy UEs).

[0131] Figure 6 illustrates an example of a UE 600 in accordance with aspects of the present disclosure. The UE 600 may include a processor 602, a memory 604, a controller 606, and a transceiver 608. The processor 602, the memory 604, the controller 606, or the transceiver 608, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.

[0132] The processor 602, the memory 604, the controller 606, or the transceiver 608, or various combinations or components thereof may be implemented in hardware (e.g., circuitry). The hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), or other programmable logic device, or anycombination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.

[0133] The processor 602 may include an intelligent hardware device (e.g., a general- purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof). In some implementations, the processor 602 may be configured to operate the memory 604. In some other implementations, the memory 604 may be integrated into the processor 602. The processor 602 may be configured to execute computer-readable instructions stored in the memory 604 to cause the UE 600 to perform various functions of the present disclosure.

[0134] The memory 604 may include volatile or non-volatile memory. The memory 604 may store computer-readable, computer-executable code including instructions when executed by the processor 602 cause the UE 600 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such the memory 604 or another type of memory. Computer-readable media includes both non- transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.

[0135] In some implementations, the processor 602 and the memory 604 coupled with the processor 602 may be configured to cause the UE 600 to perform one or more of the functions described herein (e.g., executing, by the processor 602, instructions stored in the memory 604). For example, the processor 602 may support wireless communication at the UE 600 in accordance with examples as disclosed herein. For example, the UE 600 may be configured to support a means for receiving a first configuration comprising a set of one or more sub-bands, receiving a second configuration comprising a set of one or more SRS parameters, wherein the second configuration comprises an association between the set of one or more SRS parameters and the set of one or more sub-bands, determining information associated with the set of one or more sub-bands, selecting at least one SRS parameter from the set of one or more SRS parameters based on the information and the information and the association between the SRS parameters and the set of one or more sub-bands, and transmitting an SRS according to the selected at least one SRS parameter.

[0136] As another example, the UE 600 may be configured to support a means for receiving a first configuration indicating one or more sub-bands, receiving a second configuration associated with CLI report, wherein the second configuration comprises SRS parameter values and information that associates the SRS parameter values and the one or more sub-bands, measuring one or more CLI values based on the second configuration, obtaining one or more SRS parameter values based on the measured one or more CLI values, determining additional information associated with the one or more sub-bands based on the one or more SRS parameter values and the information that associates the SRS parameter values and the one or more sub-bands, and transmitting a CLI report to a network entity that includes the measured one or more CLI values, the determined additional information, or combinations thereof.

[0137] The controller 606 may manage input and output signals for the UE 600. The controller 606 may also manage peripherals not integrated into the UE 600. In some implementations, the controller 606 may utilize an operating system such as iOS®, ANDROID®, WINDOWS®, or other operating systems. In some implementations, the controller 606 may be implemented as part of the processor 602.

[0138] In some implementations, the UE 600 may include at least one transceiver 608. In some other implementations, the UE 600 may have more than one transceiver 608. The transceiver 608 may represent a wireless transceiver. The transceiver 608 may include one or more receiver chains 610, one or more transmitter chains 612, or a combination thereof.

[0139] A receiver chain 610 may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receiver chain 610 may include one or more antennas for receive the signal over the air or wireless medium. The receiver chain 610 may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. The receiver chain 610 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 610 may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.

[0140] A transmitter chain 612 may be configured to generate and transmit signals (e.g., control information, data, packets). The transmitter chain 612 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM). The transmitter chain 612 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmitter chain 612 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.

[0141] Figure 7 illustrates an example of a processor 700 in accordance with aspects of the present disclosure. The processor 700 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 700 may include a controller 702 configured to perform various operations in accordance with examples as described herein. The processor 700 may optionally include at least one memory 704, which may be, for example, an L1 / L2 / L3 cache. Additionally, or alternatively, the processor 700 may optionally include one or more arithmetic-logic units (ALUs) 706. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses).

[0142] The processor 700 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 700) or other memory (e.g., random access memory (RAM), read-only memory (ROM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), static RAM (SRAM), ferroelectric RAM (FeRAM), magnetic RAM (MRAM), resistive RAM (RRAM), flash memory, phase change memory (PCM), and others).

[0143] The controller 702 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 700 to cause the processor 700 to support various operations in accordance with examples as described herein. For example, the controller 702 may operate as a control unit of the processor 700, generating control signals that manage the operation of various components of the processor 700. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.

[0144] The controller 702 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 704 and determine subsequent instruction(s) to be executed to cause the processor 700 to support various operations in accordance with examples as described herein. The controller 702 may be configured to track memory address of instructions associated with the memory 704. The controller 702 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 702 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 700 to cause the processor 700 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 702 may be configured to manage flow of data within the processor 700. The controller 702 may be configured to control transfer of data between registers, arithmetic logic units (ALUs), and other functional units of the processor 700.

[0145] The memory 704 may include one or more caches (e.g., memory local to or included in the processor 700 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementations, the memory 704 may reside within or on a processor chipset (e.g., local to the processor 700). In some other implementations, the memory 704 may reside external to the processor chipset (e.g., remote to the processor 700).

[0146] The memory 704 may store computer-readable, computer-executable code including instructions that, when executed by the processor 700, cause the processor 700 to perform various functions described herein. The code may be stored in a non-transitorycomputer-readable medium such as system memory or another type of memory. The controller 702 and / or the processor 700 may be configured to execute computer-readable instructions stored in the memory 704 to cause the processor 700 to perform various functions. For example, the processor 700 and / or the controller 702 may be coupled with or to the memory 704, the processor 700, the controller 702, and the memory 704 may be configured to perform various functions described herein. In some examples, the processor 700 may include multiple processors and the memory 704 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.

[0147] The one or more ALUs 706 may be configured to support various operations in accordance with examples as described herein. In some implementations, the one or more ALUs 706 may reside within or on a processor chipset (e.g., the processor 700). In some other implementations, the one or more ALUs 706 may reside external to the processor chipset (e.g., the processor 700). One or more ALUs 706 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 706 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 706 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 706 may support logical operations such as AND, OR, exclusive-OR (XOR), not-OR (NOR), and not- AND (NAND), enabling the one or more ALUs 706 to handle conditional operations, comparisons, and bitwise operations.

[0148] The processor 700 may support wireless communication in accordance with examples as disclosed herein. For example, the processor 700 may be configured to support a means for receiving a first configuration comprising a set of one or more sub-bands, receiving a second configuration comprising a set of one or more SRS parameters, wherein the second configuration comprises an association between the set of one or more SRS parameters and the set of one or more sub-bands, determining information associated with the set of one or more sub-bands, selecting at least one SRS parameter from the set of oneor more SRS parameters based on the information and the information and the association between the SRS parameters and the set of one or more sub-bands, and transmitting an SRS according to the selected at least one SRS parameter.

[0149] As another example, the processor 700 may be configured to support a means for receiving a first configuration indicating one or more sub-bands, receiving a second configuration associated with CLI report, wherein the second configuration comprises SRS parameter values and information that associates the SRS parameter values and the one or more sub-bands, measuring one or more CLI values based on the second configuration, obtaining one or more SRS parameter values based on the measured one or more CLI values, determining additional information associated with the one or more sub-bands based on the one or more SRS parameter values and the information that associates the SRS parameter values and the one or more sub-bands, and transmitting a CLI report to a network entity that includes the measured one or more CLI values, the determined additional information, or combinations thereof.

[0150] Figure 8 illustrates an example of a NE 800 in accordance with aspects of the present disclosure. The NE 800 may include a processor 802, a memory 804, a controller 806, and a transceiver 808. The processor 802, the memory 804, the controller 806, or the transceiver 808, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.

[0151] The processor 802, the memory 804, the controller 806, or the transceiver 808, or various combinations or components thereof may be implemented in hardware (e.g., circuitry). The hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.

[0152] The processor 802 may include an intelligent hardware device (e.g., a general- purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof). In some implementations, the processor 802 may be configured to operate the memory 804. Insome other implementations, the memory 804 may be integrated into the processor 802. The processor 802 may be configured to execute computer-readable instructions stored in the memory 804 to cause the NE 800 to perform various functions of the present disclosure.

[0153] The memory 804 may include volatile or non-volatile memory. The memory 804 may store computer-readable, computer-executable code including instructions when executed by the processor 802 cause the NE 800 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such the memory 804 or another type of memory. Computer-readable media includes both non- transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.

[0154] In some implementations, the processor 802 and the memory 804 coupled with the processor 802 may be configured to cause the NE 800 to perform one or more of the functions described herein (e.g., executing, by the processor 802, instructions stored in the memory 804).

[0155] For example, the processor 802 may support wireless communication at the NE 800 in accordance with examples as disclosed herein. The NE 800 may be configured to support a means for transmitting to a UE a first configuration that comprises information associated with one or more sub-bands, transmitting to the UE a second configuration associated with an SRS, wherein the second configuration includes one or more SRS parameter values, determining additional information associated with the one or more subbands, determining at least one SRS or at least one SRS parameter value based on the additional information, and transmitting to the UE an indication of the determined at least one SRS or at least one SRS parameter value.

[0156] As another example, the processor 802 may support wireless communication at the NE 800 in accordance with examples as disclosed herein. The NE 800 may be configured to support a means for transmitting, to a UE a configuration associated with one or more CLI reports, wherein the configuration comprises one or more SRSs or one or more SRS parameter values, receiving, from the UE, one or more CLI measurement reports,determining at least one SRS or SRS parameter value from the one or more CLI reports, and determining additional information associated with one or more sub-bands based on the determined at least one SRS or SRS parameter value.

[0157] The controller 806 may manage input and output signals for the NE 800. The controller 806 may also manage peripherals not integrated into the NE 800. In some implementations, the controller 806 may utilize an operating system such as iOS®, ANDROID®, WINDOWS®, or other operating systems. In some implementations, the controller 806 may be implemented as part of the processor 802.

[0158] In some implementations, the NE 800 may include at least one transceiver 808. In some other implementations, the NE 800 may have more than one transceiver 808. The transceiver 808 may represent a wireless transceiver. The transceiver 808 may include one or more receiver chains 810, one or more transmitter chains 812, or a combination thereof.

[0159] A receiver chain 810 may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receiver chain 810 may include one or more antennas for receive the signal over the air or wireless medium. The receiver chain 810 may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. The receiver chain 810 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 810 may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.

[0160] A transmitter chain 812 may be configured to generate and transmit signals (e.g., control information, data, packets). The transmitter chain 812 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM). The transmitter chain 812 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitablefor transmission over the wireless medium. The transmitter chain 812 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.

[0161] Figure 9 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by a UE as described herein. In some implementations, the UE may execute a set of instructions to control the function elements of the UE to perform the described functions.

[0162] At 902, the method may include receiving a first configuration comprising a set of one or more sub-bands. The operations of 902 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 902 may be performed by a UE as described with reference to Figure 6.

[0163] At 904, the method may include receiving a second configuration comprising a set of one or more SRS parameters, wherein the second configuration comprises an association between the set of one or more SRS parameters and the set of one or more subbands. The operations of 904 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 904 may be performed by a UE as described with reference to Figure 6.

[0164] At 906, the method may include determining information associated with the set of one or more sub-bands. The operations of 906 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 906 may be performed by a UE as described with reference to Figure 6.

[0165] At 908, the method may include selecting at least one SRS parameter from the set of one or more SRS parameters based on the information and the association between the SRS parameters and the set of one or more sub-bands. The operations of 908 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 908 may be performed by a UE as described with reference to Figure 6.

[0166] At 910, the method may include transmitting an SRS according to the selected at least one SRS parameter. The operations of 910 may be performed in accordance withexamples as described herein. In some implementations, aspects of the operations of 910 may be performed by a UE as described with reference to Figure 6.

[0167] It should be noted that the method described herein describes a possible implementation, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible.

[0168] Figure 10 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by a UE as described herein. In some implementations, the UE may execute a set of instructions to control the function elements of the UE to perform the described functions.

[0169] At 1002, the method may include receiving a first configuration indicating one or more sub-bands. The operations of 1002 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1002 may be performed by a UE as described with reference to Figure 6.

[0170] At 1004, the method may include receiving a second configuration associated with a CLI report, wherein the second configuration comprises SRS parameter values and information that associates the SRS parameter values and the one or more sub-bands. The operations of 1004 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1004 may be performed by a UE as described with reference to Figure 6.

[0171] At 1006, the method may include measuring one or more CLI values based on the second configuration. The operations of 1006 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1006 may be performed by a UE as described with reference to Figure 6.

[0172] At 1008, the method may include obtaining one or more SRS parameter values based on the measured one or more CLI values. The operations of 1008 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1008 may be performed by a UE as described with reference to Figure 6.

[0173] At 1010, the method may include determining additional information associated with the one or more sub-bands based on the one or more SRS parameter values and the information that associates the SRS parameter values and the one or more sub-bands. The operations of 1010 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1010 may be performed by a UE as described with reference to Figure 6.

[0174] At 1012, the method may include transmitting a CLI report to a network entity that includes the measured one or more CLI values, the determined additional information, or combinations thereof. The operations of 1012 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1012 may be performed by a UE as described with reference to Figure 6.

[0175] It should be noted that the method described herein describes a possible implementation, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible.

[0176] Figure 11 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by an NE as described herein. In some implementations, the NE may execute a set of instructions to control the function elements of the NE to perform the described functions.

[0177] At 1102, the method may include transmitting to a UE a first configuration that comprises information associated with one or more sub-bands. The operations of 1102 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1102 may be performed by an NE as described with reference to Figure 8.

[0178] At 1104, the method may include transmitting to the UE a second configuration associated with an SRS, wherein the second configuration includes one or more SRS parameter values. The operations of 1104 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1104 may be performed by an NE as described with reference to Figure 8.

[0179] At 1106, the method may include determining additional information associated with the one or more sub-bands. The operations of 1106 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1106 may be performed by an NE as described with reference to Figure 8.

[0180] At 1108, the method may include determining at least one SRS or at least one SRS parameter value based on the additional information. The operations of 1108 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1108 may be performed by an NE as described with reference to Figure 8.

[0181] At 1110, the method may include transmitting to the UE an indication of the determined at least one SRS or at least one SRS parameter value. The operations of 1110 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1110 may be performed by an NE as described with reference to Figure 8.

[0182] It should be noted that the method described herein describes a possible implementation, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible.

[0183] Figure 12 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by an NE as described herein. In some implementations, the NE may execute a set of instructions to control the function elements of the NE to perform the described functions.

[0184] At 1202, the method may include transmitting, to a UE a configuration associated with one or more CLI reports, wherein the configuration comprises one or more SRSs or one or more SRS parameter values. The operations of 1202 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1202 may be performed by an NE as described with reference to Figure 8.

[0185] At 1204, the method may include receiving, from the UE, one or more CLI measurement reports. The operations of 1204 may be performed in accordance withexamples as described herein. In some implementations, aspects of the operations of 1204 may be performed by an NE as described with reference to Figure 8.

[0186] At 1206, the method may include determining at least one SRS or SRS parameter value from the one or more CLI reports. The operations of 1206 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1206 may be performed by an NE as described with reference to Figure 8.

[0187] At 1208, the method may include determining additional information associated with one or more sub-bands based on the determined at least one SRS or SRS parameter value. The operations of 1208 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1208 may be performed by an NE as described with reference to Figure 8.

[0188] It should be noted that the method described herein describes a possible implementation, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible.

[0189] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

CLAIMSWhat is claimed is:

1. A user equipment (UE) for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the UE to: receive a first configuration comprising a set of one or more sub-bands; receive a second configuration comprising a set of one or more sounding reference signal (SRS) parameters, wherein the second configuration comprises an association between the set of one or more SRS parameters and the set of one or more sub-bands; determine information associated with the set of one or more sub-bands; select at least one SRS parameter from the set of one or more SRS parameters based on the information and the association between the SRS parameters and the set of one or more sub-bands; and transmit an SRS according to the selected at least one SRS parameter.

2. The UE of claim 1, wherein the first configuration comprises a sub-band-full- duplex (SBFD) configuration, and wherein one or more sub-bands of the set of one or more sub-bands comprises full-duplex-sub-bands.

3. The UE of claim 1, wherein the set of one or more SRS parameters comprises: a resource in a time domain, a frequency domain, a spatial domain, a code domain, or combinations thereof; a resource set; a transmission power; an antenna port; an antenna switching; a comb pattern; a cyclic shift;a repetition factor; a shift in the frequency domain, the time domain, or a combination thereof; a frequency hopping pattern; a periodicity, an offset, or a combination thereof; or spatial relation information.

4. The UE of claim 1, wherein the association between the set of one or more SRS parameters and the set of one or more sub-bands indicates that a frequency range for the SRS matches a corresponding frequency range of a sub-band of the set of one or more subbands.

5. The UE of claim 1, wherein the information indicates a sub-band based on the one or more sub-bands or whether the sub-band of the one or more sub-bands is active for wireless communication.

6. The UE of claim 1, wherein the information indicates a frequency domain range for a sub-band of the set of one or more sub-bands.

7. The UE of claim 1, wherein the information indicates a time domain range for a sub-band of the set of one or more sub-bands.

8. The UE of claim 1, wherein the at least one processor is configured to cause the UE to receive a radio resource control (RRC) message, a medium access control (MAC) control element (CE), or a downlink control information (DCI), or combinations thereof, indicating the information associated with the set of one or more sub-bands.

9. A user equipment (UE) for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the UE to: receive a first configuration indicating one or more sub-bands;receive a second configuration associated with a cross-link interference (CLI) report, wherein the second configuration comprises SRS parameter values and information that associates the SRS parameter values and the one or more sub-bands; measure one or more CLI values based on the second configuration; obtain one or more SRS parameter values based on the measured one or more CLI values; determine additional information associated with the one or more sub-bands based on the one or more SRS parameter values and the information that associates the SRS parameter values and the one or more subbands; and transmit a CLI report to a network entity that includes the measured one or more CLI values, the determined additional information, or combinations thereof.

10. The UE of claim 9, wherein the first configuration is associated with a sub- band-full-duplex (SBFD) operation.

11. The UE of claim 9, wherein the measured one or more CLI values comprises reference signal received power (RSRP) values.

12. The UE of claim 9, wherein the SRS parameter values are one or more SRS parameters, including: a resource in a time domain, a frequency domain, a spatial domain, a code domain, or combinations thereof; a resource set; a transmission power; an antenna port; an antenna switching; a comb pattern;a cyclic shift; a repetition factor; a shift in the frequency domain, the time domain, or a combination thereof; a frequency hopping pattern; a periodicity, an offset, or a combination thereof; or spatial relation information.

13. The UE of claim 9, wherein, when the information that associates the SRS parameter values and the one or more sub-bands indicates that a frequency range for the SRS is identical to a frequency range of a sub-band of the one or more sub-bands, the at least one processor is configured to cause the UE to obtain the frequency range for the SRS based on the measured one or more CLI values and to determine the frequency range is identical to the frequency range of the sub-band.

14. The UE of claim 9, wherein the additional information associated with the one or more sub-bands comprises: information that indicates whether a sub-band of the one or more sub-bands is active or selected for communication, or information that identifies which sub-band of the one or more sub-bands is active or selected for communication.

15. The UE of claim 9, wherein the additional information associated with the one or more sub-bands comprises information identifying a frequency-domain range for a subband of the one or more sub-bands indicated by physical resource blocks (PRBs) or megahertz (MHz).

16. The UE of claim 9, wherein the additional information associated with the one or more sub-bands comprises information identifying a frequency-domain range for a subband of the one or more sub-bands indicated by symbols, slots, subframes, frames, or milliseconds (ms).

17. A network entity for wireless communication, comprising: at least one memory; andat least one processor coupled with the at least one memory and configured to cause the network entity to: transmit to a user equipment (UE) a first configuration that comprises information associated with one or more sub-bands; transmit to the UE a second configuration associated with a sounding reference signal (SRS), wherein the second configuration includes one or more SRS parameter values; determine additional information associated with the one or more sub-bands; determine at least one SRS or at least one SRS parameter value based on the additional information; and transmit to the UE an indication of the determined at least one SRS or at least one SRS parameter value.

18. The network entity of claim 17, wherein the at least one processor is further configured to cause the network entity to: transmit, to another network entity, information that identifies the first configuration, the second configuration and an indication of associations between the SRS or the one or more SRS parameter values, the one or more sub-bands, and the additional information, wherein the indication of associations between the SRS or the one or more SRS parameter values, the one or more sub-bands, and the additional information comprises an indication of an association between at least one SRS or at least one SRS parameter value and at least one sub-band for communication with the UE.

19. A network entity for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the network entity to: transmit, to a user equipment (UE), a configuration associated with one or more cross-link interference (CLI) reports,wherein the configuration comprises one or more sounding reference signals (SRSs) or one or more SRS parameter values; receive, from the UE, one or more CLI measurement reports; determine at least one SRS or SRS parameter value from the one or more CLI reports; and determine additional information associated with one or more sub-bands based on the determined at least one SRS or SRS parameter value.

20. The network entity of claim 19, wherein the at least on processor is further configured to cause the network entity to: receive, from another network entity, information identifying the one or more SRSs or the one or more SRS parameter values, the one or more sub-bands, and an indication of associations between the one or more SRSs or the one or more SRS parameter values, the one or more sub-bands, and the additional information, wherein the indication of associations between the one or more SRSs or the one or more SRS parameter values, the one or more sub-bands, and the additional information comprises an indication of an association between at least one SRS or at least one SRS parameter value and at least one sub-band for communication with a UE served by the another network entity.

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