Reverse UE-UE CLI measurement method in non-overlapping SBFD deployment

Abstract

This disclosure describes techniques related to reverse UE-UE CLI measurements in non-overlapping SBFD deployments. The UE performs measurements related to transmissions of another user equipment in the SBFD deployment. The UE then reports measurements for each of the plurality of receiving Rx antennas.

Description

[0001] Cross-references

[0002] The present invention claims the following priority: U.S. patent application No. 63 / 356,090 filed on June 28, 2022, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention generally relates to wireless communications, and more particularly, to a method for reverse user equipment (UE) to user equipment (UE-UE) cross-link interference (CLI) measurement in a non-overlapping subband full-duplex (SBFD) deployment. Background Art

[0004] Unless otherwise indicated, the approaches described in this section are not prior art to the claims listed below and are not admitted to be prior art by inclusion in this section.

[0005] In wireless communications, such as mobile communications in 5G new radio (NR) in the 3GPP standard, SBFD deployment (such as having uplink (UL) subbands in certain downlink (DL) time slots) can provide certain benefits, such as lower time-division duplex (TDD) alignment delay, resulting in low latency and more retransmission opportunities for real-time services. In addition, there can be longer UL transmissions, thereby achieving robustness by applying UL repetition to obtain better coverage. In addition, legacy UEs can also enjoy the above benefits. The signal-to-interference-and-noise-ratio (SINR) of the DL reception of legacy UEs will not be affected or compromised by the UL-DL inter-subband CLI of other UEs transmitting in the UL-SB of the same time slot in the same serving cell. The scheduler needs to understand the level of potential CLI that the legacy UE reception is affected by other UEs that may transmit in the UL subband of the same time slot. However, existing UEs do not support the UE-UE CLI measurement function in 3GPP standard Release 16 (R16) or future releases. Therefore, a solution for reverse UE-UE CLI measurement in non-overlapping SBFD deployment is needed. Summary of the invention

[0006] The following summary of the invention is merely illustrative and is not intended to be limiting in any way. That is, the following summary of the invention is provided to introduce the concepts, key points, benefits, and beneficial effects of the novel and non-obvious technologies described in the present invention. Selected embodiments are further described in the detailed description below. Therefore, the following summary of the invention is not intended to identify the essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

[0007] The present invention aims to solve the above-mentioned problems and propose solutions and solutions. Specifically, various solutions proposed in the present invention aim to provide solutions including reverse UE-UE CLI measurement in non-overlapping SBFD deployment.

[0008] In one aspect, a method may include a UE performing measurements related to another UE transmission in a SBFD deployment. The above method may also include the UE reporting measurement results of each of a plurality of receive (Rx) antennas, respectively.

[0009] In another aspect, a method may involve a UE performing measurements related to a sounding reference signal (SRS) transmission of another UE in an SBFD deployment. The above method may also include the UE reporting the measurement results. The measurement resources configured by the UE may have a quasi-co-location (QCL)-Type-D spatial relationship with the UE's physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) transmission.

[0010] Please note that although the description context provided by the present invention may be certain specific radio access technologies, networks and network topologies (such as 5G / NR mobile communications), the proposed concepts, solutions and any variations / derivatives thereof may be implemented in, for or through any other types of radio access technologies, networks and network topologies, such as but not limited to long-term evolution (LTE), advanced LTE (LTE-advanced), advanced LTE upgraded version (LTE-advancedPro), Internet of Things (IoT), narrowband Internet of things (NB-IoT), industrial Internet of things (IIoT), vehicle-to-everything (V2X) and non-terrestrial network (NTN) communications. Therefore, the scope of the present invention is not limited to the examples described in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are included to provide a further understanding of the invention and are incorporated into and constitute a part of the present invention. The accompanying drawings illustrate embodiments of the present invention and together with the description are used to explain the principles of the present invention. It is understood that in order to clearly illustrate the concepts of the present invention, the accompanying drawings are not necessarily drawn to scale, and some components shown may be shown in a scale that exceeds the size in the actual embodiment.

[0012] Figure 1 is a schematic diagram of an exemplary network environment, in which various solutions and schemes according to the present invention can be implemented.

[0013] Figure 2 is a schematic diagram of an exemplary scenario according to the solution proposed in the present invention.

[0014] Figure 3 is a schematic diagram of an exemplary scenario according to the solution proposed in the present invention.

[0015] Figure 4 is a schematic diagram of an exemplary communication system according to an embodiment of the present invention.

[0016] Figure 5 is a schematic diagram of an exemplary process according to an embodiment of the present invention.

[0017] Figure 6 is a schematic diagram of an exemplary process according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The present invention discloses detailed embodiments and implementations of the claimed subject matter. However, it should be understood that the disclosed embodiments and implementations are merely illustrations of the claimed subject matter that can be implemented in various forms. Moreover, the present invention can be implemented in many different forms and should not be interpreted as being limited to the exemplary embodiments and implementations set forth in the present invention. On the contrary, providing these exemplary embodiments and implementations is to make the description of the present invention comprehensive and complete, and to fully convey the scope of the present invention to those skilled in the art. In the following description, the details of known features and technologies may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.

[0019] Overview

[0020] Embodiments of the present invention relate to various technologies, methods, schemes and / or solutions related to reverse UE-UE CLI measurements in non-overlapping SBFD deployments. According to the present invention, a variety of possible solutions may be implemented individually or in combination. That is, although these possible solutions may be described separately below, two or more of these possible solutions may be implemented in one combination or in other combinations.

[0021] In the present invention, the term "subband" or "cluster" may refer to a group of consecutive resource blocks (RBs) sharing the same link direction. The term "RB group" or "RB set" may refer to a group of consecutive RBs within a carrier and should be distinguished from the existing concept of "RB set" for broadband operation on shared spectrum in the 3GPP standard R17 for NR unlicensed band (NR-U). The concept of cluster availability is based on listen-before-talk in R17, while in R18, cluster availability for transmission or reception is based on a periodic subband layout pattern. In R17, all UEs use the same cluster availability, while in R18, the cluster configuration of each UE may be different. Moreover, R17 does not allow non-continuous cluster operation, while R18 needs to support non-continuous cluster operation. In addition, in R18, it is assumed that existing UEs (TDD) coexist with enhanced UEs (SBFD-aware). The term "CLI" may refer to cross-link interference (e.g., UE / UL to UE / DL, gNB / DL to gNB / UL). The term "SIC" may refer to self-interference cancellation on the gNB side. The term "CC" may refer to a component carrier in the context of carrier aggregation (CA) or multi-carrier duplexing. The term "rate matching pattern" may refer to the concept used by the 3GPP standard to define frequency-time regions, whose repetition on network resources (called a pattern) is excluded from the network resources used for DL ​​transmissions scheduled in overlapping areas. To send the same payload on fewer resources, matching coding rates is required. The term "active UE DL cluster" may refer to a cluster that is available for UE scheduling in a given time slot when the UE is receiving. The term "active UE UL cluster" may refer to a cluster that is available for UE scheduling in a given time slot when the UE is transmitting. The term "active UE cluster" may refer to any DL or UL cluster that is available for UE scheduling in a given time slot.

[0022] Figure 1 is a schematic diagram of an exemplary network environment 100 in which various solutions and schemes according to the present invention may be implemented. Figure 2-Figure 6 1 is a schematic diagram of an exemplary implementation of various proposed solutions in a network environment 100 according to the present invention. Figure 1-Figure 6 Descriptions of various proposed schemes are provided.

[0023] refer to Figure 1 , the network environment 100 may include a UE 110 in wireless communication with a RAN 120 (e.g., a 5G NR mobile network or other network types such as an NTN). The UE 110 may be in wireless communication with the RAN 120 via a base station (BS) or a network node 125 (e.g., a gNB, an eNB, or a transmit-receive point (TRP)) and / or a non-terrestrial network node 128 (e.g., a satellite). The RAN 120 may be part of a network 130. As described below, in the network environment 100, the UE 110 and the network 130 (via the network node 125 of the RAN 120) may implement various schemes related to reverse UE-UE CLI measurements in a non-overlapping SBFD deployment. Please note that although various schemes, options, and methods may be described separately below, in actual applications, these schemes, options, and methods may be implemented separately or in combination. That is, in some cases, each of the proposed schemes, options, and methods may be implemented individually or separately. In other cases, some or all of the proposed schemes, options, and methods may be implemented in combination.

[0024] In the scheme proposed according to the present invention, a potential aggressor UE can perform UE-UE CLI measurement when an existing UE is transmitting, and the aggressor UE can report the level of CLI to the UE scheduler. That is, the SRS can be sent by the existing UE in the UL subband or UL time slot, and the SRS reference signal received power (RSRP) can be measured by the existing UE. The UE scheduler can estimate the CLI in the opposite direction (such as when the existing UE is receiving and is the victim of the CLI from the reporting UE), or the UE scheduler can directly apply it assuming transmit-receive (Tx-Rx) reciprocity when the CLI level is within the necessary accuracy tolerance range. This is referred to as "reverse CLI measurement" or "reverse CLI prediction" between UEs in the present invention. In addition, it may be necessary to consider the asymmetry between transmission and reception in each UE participating in the CLI scenario, and the conditions for CLI measurement may need to be adjusted accordingly.

[0025] Figure 2 FIG. 2 is a schematic diagram of an exemplary scenario 200 according to the solution proposed in the present invention. Scenario 200 involves forward and reverse CLI measurement and prediction using layer 3 (L3) SRS-RSRP. Figure 2Part (A) of FIG. 4 shows an example of forward CLI prediction with fixed Tx-Rx roles and victim UE measuring SRS-RSRP. In this example, periodic UE-CLI measurements can be performed and SRS-RSRP can characterize the CLI between each UE pair. In addition, if the reported RSRP is too high, the scheduler can postpone the aggressor UE to a different time slot or symbol, or the scheduler can schedule a weaker aggressor instead. Figure 2 Part (B) of FIG. 4 shows an example of reverse CLI prediction using Tx-Rx CLI reciprocity, where the attacker UE measures SRS-RSRP when the victim legacy UE does not have the relevant capability in order to maintain the performance of the legacy UE. Tx-Rx reciprocity is considered to be related to large-scale fading and Tx / Rx antenna gain. In this example, periodic UE-CLI measurements can be performed and SRS-RSRP can characterize the CLI between each UE pair. In addition, reverse CLI reports such as Figure 2 The exemplary example execution shown in part (A) of FIG.

[0026] Figure 3 3 is a schematic diagram of an exemplary scenario 300 according to the solution proposed by the present invention. The scenario 300 relates to a frequency range (FR) 1 SRS-RSRP CLI measurement antenna configuration scenario. Figure 3 Part (A) of Figure 1 shows an example of a potential CLI scenario, where a first UE (UE#1) acting as an attacker is scheduled in the UL-SB of a DL timeslot, causing CLI to a second UE (UE#2) acting as a victim. The deployment may be in FR1 (for simplicity), analog beamforming is not used in this scenario, and the number of Tx and Rx antennas is usually different. In this example, Rx uses all 4 antennas, while Tx uses only 1. The two UEs may have different numbers of antennas. In FR2, the number of digital Tx and Rx branches may also be asymmetric in number, and the proposed solution can also be applied, but analog beamforming may increase the complexity of this scenario.

[0027] Figure 3 Part (B) of Figure 1 shows an example of a forward CLI measurement / prediction scenario, where UE#1 transmits SRS on a single Tx antenna. UE#2 measures SRS-RSRP on all 4 antennas and reports the aggregated (and L3 filtered) value to the base station (e.g., gNB). The scheduler uses this value to Figure 3CLI prediction for the scenario in part (A) of Figure 1, where UE#1 is the aggressor and UE#2 is the victim. Therefore, the Tx and Rx roles in the measurement and prediction are the same. For aggregation on the Rx antennas, the SRS-RSRP is calculated separately for each antenna connector and the aggregated SRS-RSRP (filtered over multiple instances of the SRS resource) is reported to the gNB as per 3GPP TS 38.215R16. As per the standard, the aggregate value is equal to or greater than the maximum value measured on any antenna.

[0028] Figure 3 Part (C) of Figure 1 shows an example of a reverse CLI measurement / prediction scenario, where UE#2 (e.g., legacy device) transmits SRS on a single Tx antenna, and UE#1 measures SRS-RSRP on all 4 antennas and reports the aggregated (and L3 filtered) value to the gNB. The scheduler uses this value to Figure 3 CLI prediction in the scenario of part (A) of FIG. 1 , where UE#1 is the aggressor and UE#2 is the victim. Therefore, the Tx and Rx roles in the measurement and prediction are the same.

[0029] Figure 3 Part (D) of the BS shows an example of reverse measurement and prediction of the local area (LA) using Tx antenna switching. This scenario uses Tx-Rx TDD channel reciprocity and is similar to Figure 3Part (C) of the UE is similar, but the purpose is different. In part (D), the BS's UL SRS reception allows estimation of the DL channel state (such as channel quality indicator (CQI), precoding matrix indicator (PMI), rank indication (RI)) for link adaptation. Although the UE may support a single antenna port, it supports the optional capability of switching transmission to other receive antennas (such as within a 15 microsecond switching transition period). The UE is configured with an SRS resource set (SRS-Resource-Set) including multiple SRS resources, each resource scheduled to a different symbol. The field 'usage' of the SRS-Resource-Set can be configured to 'txAntennaSwitching'. Each time the SRS-Resource-Set is triggered, each SRS resource is transmitted in its own symbol, and the antenna can be switched during transmission. This pattern is defined by the SRS-TxSwitch field in the UE's feature set (FeatureSet). The BS measures the complex channel for each antenna for multi-input-and-multi-output (MIMO) link adaptation.

[0030] The existing L3 SRS-RSRP measurement in 3GPP standard R16 has some limitations. Figure 3 Part (C) (reverse CLI measurement) and Figure 3 Compared to the scenario described in section (D) (DL channel estimation), there are some limitations when SRS-RSRP measurements are used for backward prediction. First, only the aggregate SRS-RSRP value is reported, and the SRS-RSRP values ​​of each antenna are discarded. Second, the phase information between the Rx antennas is also discarded. Third, unlike the case where the SRS resource set is configured with 'txAntennaSwitching' and each antenna utilizes reciprocal channel estimation of SRS resources, the CLI measurement object (CLI-MeasObject) only allows the configuration of a set of independent SRS resources, which will be reported independently instead of reporting an aggregate value. Please see the following figures and the Appendix for details. Fourth, the SRS resource trigger can only be a "periodic" trigger, and "semi-static" (via MAC) and "a-periodic" (via DCI) triggers are not supported. The above limitations and other limitations (such as L3 reporting, no SpatialRelationshipInfo) are beyond the scope of some of the proposed solutions.

[0031] Accordingly, according to various proposed schemes of the present invention, some operations can be performed separately for each SRS resource. For example, for each SRS resource, the SRS-RSRP of each Rx branch can be measured separately. In addition, the SRS-RSRP at the receiver can be aggregated separately for each SRS resource. The SRS-RSRP can also be filtered separately for each SRS resource. In addition, in the case of event triggering, each trigger can be evaluated separately for each SRS resource. The measurement results and the measurement identifier (Meas-id) and SRS identifier (SRS-id) can also be reported separately for each SRS resource.

[0032] Note that for the QCL between CLI measurements and DL reception in FR1 and FR2 in Release 16, in FR1 the physical antenna port is used for SRS-RSRP, which reduces the phase. The above measurements are not QCL with the gNB transmit in any sense. Receiver diversity is taken into account in SRS-RSRP aggregation. According to the 3GPP standard, a UE transmitting SRS needs to use antenna port 1, which is mapped to a physical antenna statically or through beam management. In FR2, the antenna port after simulated Rx beamforming is applied before SRS-RSRP, and the phase is reduced only at this point. The measurement is spatially QCL (e.g. type D) with the nearest gNB DL transmission (e.g. physical downlink shared channel (PDSCH) or control resource set (CORESET) monitoring). For the UE transmitting SRS, the simulated Tx beam is selected through beam management. Assuming UL-DL beam correspondence, the selected Tx and Rx beams are the same. The opposite is also possible, e.g. when the beam width is different, which also changes the gain and sidelobe pattern.

[0033] In CLI measurements, 1 transmitter and 4 receivers (1Tx-4Rx) are assumed, and the goal is to select the Rx antenna of the aggressor UE that may be transmitting in the reciprocal CLI scenario, and similar situations apply to other asymmetric cases (such as 2 transmitters and 4 receivers (2Tx-4Rx)). FR1 L3 CLI measurements may be sufficient or appropriate for reciprocity when small scale fading effects are filtered out by antenna and time averaging. When the Tx-Rx roles are swapped between UEs, the number of Tx-Rx paths may be similar or identical, resulting in similar average results, and the remaining differences can be further reduced by L3 filtering. However, FR1 CLI measurements still require reciprocity enhancement because the number of Tx-Rx paths may change significantly between measurement and prediction, and the Rx diversity used by the aggressor and victim UEs may be different (such as the legacy UE is a reduced-capability device with 1Tx-1Rx). In addition, if reporting enhancement is assumed in L1, L3 filtering cannot be relied on, and small scale fading may need to be tracked.

[0034] Additionally, phase information may be relevant for positioning via triangulation or change detection. While the precise method is not critical to the invention, it may be useful to report the following information: (a) the incident angle difference between the CLI signal and the desired DL signal; (b) the incident angle relative to the antenna panel; (c) the incident angle difference between subsequent CLI measurements.

[0035] For the receiver, Tx antenna switching can be transparent if the transmit sequence from each Tx antenna can be measured and an aggregate value can be reported. For example, usage = 'AntennaSwitching' may be a field in SRS-Resource-Set, and the CLI-MeasObj configuration may point to a list of SRS resources, each of which can be reported individually, rather than reporting an aggregate value by Tx antenna.

[0036] Referring to the above, in the first proposed scheme according to the present invention, the UE (such as UE 110) can report the SRS-RSRP (or cross-link interference received signal strength indicator (CLI-RSSI)) of each Rx antenna separately. In the proposed scheme, if the UE 110 performs L3 filtering, L3 filtering can be performed separately for each Rx antenna SRS-RSRP value. If supported by L1 reporting, the same applies to L1 reporting. If other metrics are reported, such as the phase difference, (weighted) peak and / or standard deviation between Rx antennas, these other metrics can also be reported for each Rx antenna. For example, the aggregate SRS-RSRP (or CLI-RSSI) result can also be reported. In addition, based on the UE configuration, the UE 110 can select which Rx antenna to measure.

[0037] In the second proposed scheme according to the present invention, the SRS measurement resource or resource set configured for SRS-RSRP measurement can be configured with an option to report the aggregate CLI value of the entire burst transmitted from the switched Tx antenna. In the first option (option 1), antenna switching can be performed according to the measurement trigger (periodic or aperiodic). MeasObjects can support the formation of SRS resource sets through the 'antennaSwitching' option. The 'antennaSwitching' usage of the existing SRS resource set information element can be referred to, and the switching rules and guard interval (GI) restrictions can be applied. In the second option (option 2), if this option is configured, the antenna can be switched according to the measurement period of the SRS resource. For example, before applying the standard defined exponential averaging, the L3 filtering can apply an ideal average, such as the same weight, between the values ​​measured by the individual antennas in the most recent switching period. Alternatively, the current L3 filtering can be applied as usual regardless of the fact of switching. Although RSSI-CLI may not be suitable for reverse measurement, reverse measurement can also be stimulated in special cases through some enhanced processing.

[0038] In the proposed scheme, the CLI-RSSI measurement resource or resource group configured for CLI measurement can be configured with the option to report the aggregate CLI value of the entire burst transmitted from the switched Tx antenna. In the first option (option 1), antenna switching can be performed according to the measurement trigger (periodic or aperiodic). MeasObjects can support the formation of a CLI-RSSI resource set through the 'antennaSwitching' option. The switching rules and GI restrictions can be applied with reference to the 'antennaSwitching' usage of the existing SRS resource set information element. In the second option (option 2), if this option is configured, the antenna can be switched according to the measurement period of the CLI-RSSI measurement resource. For example, before applying the standard defined exponential averaging, the L3 filtering can apply an ideal average (such as the same weight) between the values ​​measured by individual antennas in the most recent switching period. Alternatively, the current L3 filtering can be applied as usual regardless of the fact of switching.

[0039] Note that for reverse CLI measurements, there may be some R16 FR2 QCL configuration requirements. In particular, if the victim UE transmits SRS in UL-SB, the gNB needs to configure some simulated Tx beamforming for SRS to the Rx simulated beam used with PDSCH reception. In addition, since the aggressor UE measures SRS-RSRP in UL-SB and CLI-RSSI in DL-SB, the same simulated Rx beamforming (QCL-Type D) can be applied between CLI measurement and DL reception configuration. The same Tx simulated beam as the Rx simulated beam used for PDSCH can be used for PUSCH. If UL-DL beam correspondence can be assumed in the deployment, beam management can configure the same Tx and Rx beams for the aggressor UE and the victim UE. In the reverse case, the Tx and Rx beams may be different. Therefore, in reverse CLI measurements, the goal is to achieve that the UE transmitting SRS uses its Rx beam, while the UE measuring SRS-RSRP uses its Tx beam. L3 filtering may help to balance (in dB) potential changes in sidelobe gain due to notches of the pattern.

[0040] In the reverse CLI measurement scenario, an existing UE transmitting SRS can be configured to utilize its Rx beam using spatial relationship information (SpatialRelationInfo). However, for the UE measuring SRS-RSRP, there is no provision for utilizing its Tx beam. A new configuration option can be proposed to specify the use of a Tx beam instead of an Rx beam for measurement. In the third proposed scheme according to the present invention, the UE measuring SRS-RSRP can be configured to have a QCL-type D spatial relationship with its PUSCH or PUCCH transmission. For example, an SRS resource configured as a measurement resource can be configured with SpatialRelationInfo. SpatialRelationInfo can be restricted to being configured with an SRS resource as a reference signal. Alternatively, a new field can be introduced (below MeasObjCLI or reportConfig) to allow indication of reverse measurement or simulated Tx beam usage. The above functionality may be limited to FR2. In addition, the UE measuring SRS-RSRP can follow the QCL-type D spatial relationship based on the QCL assumption related to its (most recent) PUSCH or PUCCH transmission.

[0041] Illustrative Embodiments

[0042] Figure 4 4 is a schematic diagram of an exemplary communication system 400 having at least an exemplary device 410 and an exemplary device 420 according to an embodiment of the present invention. Each of the devices 410 and 420 can perform various functions to implement schemes, techniques, processes and methods related to reverse UE-UE CLI measurements in non-overlapping SBFD deployments, including the above-mentioned various schemes related to various proposed designs, concepts, schemes, systems and methods, including the network environment 100 and the processes described below.

[0043] Each of the devices 410 and 420 may be part of an electronic device, and may be a network device or UE (such as UE 110) such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, each of the devices 410 and 420 may be implemented in a smart phone, a smart watch, a personal digital assistant, an electronic control unit (ECU) in a vehicle, a digital camera, or a computing device such as a tablet, a laptop, or a notebook computer. Each of the devices 410 and 420 may also be part of a machine-type device, and may be an IoT device such as a fixed or static device, a home device, a roadside unit (RSU), a wired communication device, or a computing device. For example, each of the devices 410 and 420 may be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. When implemented in a network device or as a network apparatus, device 410 and / or device 420 may be implemented in an eNB of an LTE, LTE-Advanced, or LTE-Advanced Upgraded network, or in a gNB or TRP of a 4G network, NR network, or IoT network.

[0044] In some embodiments, each of the apparatus 410 and the apparatus 420 may be implemented in the form of one or more integrated circuit (IC) chips, such as, but not limited to, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex instruction set computing (CISC) processors. In the above various schemes, each of the apparatus 410 and the apparatus 420 may be implemented in a network device or UE or as a network device or UE. Each of the apparatus 410 and the apparatus 420 may include Figure 4 At least a portion of those components shown, for example, are Figure 4 Each of the apparatus 410 and the apparatus 420 may further include one or more other components (such as an internal power supply, a display device and / or a user interface device) that are not related to the solution proposed by the present invention. However, for simplicity and brevity, these components in the apparatus 410 and the apparatus 420 are not shown in FIG. Figure 4 is not described in the description below.

[0045] On the one hand, each of the processors 412 and 422 can be implemented in the form of one or more single-core processors, one or more multi-core processors, one or more CISC processors, or one or more RISC processors. That is, even if the singular term "processor" is used in the present invention to refer to the processors 412 and 422, each of the processors 412 and 422 may include multiple processors in some embodiments and may include a single processor in other embodiments according to the present invention. On the other hand, each of the processors 412 and 422 may be implemented in the form of hardware (and optionally, firmware) having electronic components, and the above-mentioned electronic components may include but are not limited to one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors and / or one or more varactors configured and arranged according to the present invention to achieve specific purposes. In other words, at least in some embodiments, each of the processors 412 and 422 can be used as a dedicated machine specially designed, configured and arranged to perform specific tasks including reverse UE-UE CLI measurements in non-overlapping SBFD deployments according to various embodiments of the present invention.

[0046] In some embodiments, the device 410 may further include a transceiver 416 coupled to the processor 412, and the transceiver 416 may be capable of wirelessly transmitting and receiving data. In some embodiments, the transceiver 416 may be capable of wirelessly communicating with different types of wireless networks having different radio access technologies (RATs). In some embodiments, the transceiver 416 may be equipped with multiple antenna ports (not shown), for example, 4 antenna ports. That is, the transceiver 416 may be equipped with multiple transmit antennas and multiple receive antennas for MIMO wireless communication. In some embodiments, the device 420 may further include a transceiver 426 coupled to the processor 422. The transceiver 426 may include a transceiver capable of wirelessly transmitting and receiving data. In some embodiments, the transceiver 426 may be capable of wirelessly communicating with different types of UEs / wireless networks of different RATs. In some embodiments, the transceiver 426 may be equipped with multiple antenna ports (not shown), for example, 4 antenna ports. That is, the transceiver 426 may be equipped with multiple transmit antennas and multiple receive antennas for MIMO wireless communication.

[0047] In some embodiments, the device 410 may further include a memory 414 coupled to the processor 412, which stores data and can be accessed by the processor 412. In some embodiments, the device 420 may further include a memory 424 coupled to the processor 422, which stores data and can be accessed by the processor 422. Each of the memory 414 and the memory 424 may include some type of random-access memory (RAM), such as dynamic RAM (DRAM), static RAM (SRAM), thyristor RAM (T-RAM) and / or zero-capacitor RAM (Z-RAM). Alternatively or additionally, each of the memory 414 and the memory 424 may include a read-only memory (ROM) type such as a mask ROM, a programmable ROM (PROM), an erasable programmable ROM (EPROM), and / or an electrically erasable programmable ROM (EEPROM). Alternatively or additionally, each of the memory 414 and the memory 424 may include some non-volatile random-access memory (NVRAM), such as flash memory, solid-state memory, ferroelectric RAM (FeRAM), magnetoresistive RAM (MRAM), and / or phase change memory.

[0048] Each of the apparatus 410 and the apparatus 420 may be a communication entity capable of communicating with each other using various schemes proposed according to the present invention. For the purpose of illustration and not limitation, a description of the capabilities of the apparatus 410 as a UE (such as UE 110) and the apparatus 420 as a network node (such as network node 125) of a network (such as network 130 as a 5G / NR mobile network) is provided below.

[0049] In some proposed schemes regarding reverse UE-UE CLI measurements in a non-overlapping SBFD deployment according to the present invention, a processor 412 of an apparatus 410 implemented in or as a UE 110 may perform measurements related to transmissions of another UE (such as apparatus 420) in the SBFD deployment via a transceiver 416. In addition, the processor 412 may report a measurement result of each of a plurality of Rx antennas via the transceiver 416.

[0050] In some embodiments, when performing the measurement, the processor 412 may perform SRS-RSRP measurement. In some embodiments, when reporting the measurement result, the processor 412 may report the SRS-RSRP aggregation result. In some embodiments, the processor 412 may also perform L3 filtering for each Rx antenna SRS-RSRP value separately. Optionally or additionally, the processor 412 may also perform L1 filtering for each Rx antenna SRS-RSRP value separately.

[0051] In some implementations, when performing the measurement, the processor 412 may perform a CLI-RSSI measurement. In some implementations, when reporting the measurement result, the processor 412 may further report a CLI-RSSI aggregation result.

[0052] In some embodiments, when reporting the measurement results, the processor 412 may report one or more other metrics according to the Rx antenna. For example, the one or more other metrics may include at least one of the following metrics: phase difference, peak value, weighted peak value, and standard deviation between multiple Rx antennas.

[0053] In some implementations, when performing the measurement, the processor 412 may select which Rx antenna among the multiple Rx antennas to measure based on the UE configuration.

[0054] In some implementations, when performing measurements, processor 412 may perform the measurements in FR1.

[0055] In other proposed schemes regarding reverse UE-UE CLI measurements in non-overlapping SBFD deployments according to the present invention, a processor 412 of an apparatus 410 implemented in or as a UE 110 may perform measurements related to SRS transmissions of another UE (such as apparatus 420) in the SBFD deployment via a transceiver 416. In addition, the processor 412 may report the measurement results via the transceiver 416. The apparatus 410 as a UE may be configured to measure resources having a QCL-Type D spatial relationship with a PUSCH or PUCCH transmission of the apparatus 410.

[0056] In some embodiments, when performing measurement, the processor 412 may use the SRS resource configured as the measurement resource to perform the measurement. In addition, the SRS resource may be configured with spatial relationship information (SpatialRelationInfo). In some embodiments, the SpatialRelationInfo may be configured with the SRS resource as a reference signal.

[0057] In some embodiments, when reporting the measurement result, the processor 412 may report by a new field indicating reverse measurement. Alternatively, when reporting the measurement result, the processor 412 may report by a new field indicating the use of an analog Tx beam.

[0058] In some implementations, when performing measurements, processor 412 may perform the measurements in FR2.

[0059] Illustrative Process

[0060] Figure 5 5 is a schematic diagram of an exemplary process 500 according to an embodiment of the present invention. Process 500 may represent a portion or all of various aspects of implementing the various proposed designs, concepts, schemes, systems, and methods described above. More specifically, process 500 may represent an aspect of the proposed concepts and schemes for reverse UE-UE CLI measurements in non-overlapping SBFD deployments. Process 500 may include one or more operations, actions, or functions shown in one or more of blocks 510, 520. Although the various blocks shown are discrete, depending on the desired implementation, the various blocks in process 500 may be split into more blocks, combined into fewer blocks, or some blocks may be deleted. In addition, the blocks / sub-blocks of process 500 may be arranged as follows. Figure 5 The process 500 may be performed in the order shown or may be performed in a different order. Moreover, one or more blocks / sub-blocks of the process 500 may be performed iteratively. The process 500 may be implemented by or in the device 410, the device 420, and any variant thereof. For illustrative purposes only and not limitation, the process 500 is described below in the context of the device 410 as a UE (such as UE 110) and the device 420 as a communication entity (such as a network node or a base station (such as network node 125) of a network (such as network 130 as a 5G / NR mobile network). The process 500 may start at block 510.

[0061] At 510, process 500 may include processor 412 of apparatus 410 performing measurements related to transmissions of another UE (eg, apparatus 420) in a SBFD deployment via transceiver 416. Process 500 may proceed from 510 to 520.

[0062] At 520 , the process 500 may include the processor 412 reporting, via the transceiver 416 , the measurement results of each of the plurality of Rx antennas.

[0063] In some embodiments, when performing the measurement, the process 500 may include the processor 412 performing the SRS-RSRP measurement. In some embodiments, when reporting the measurement result, the process 500 may include the processor 412 reporting the SRS-RSRP aggregation result. In some embodiments, the process 500 may also include the processor 412 performing L3 filtering for each Rx antenna SRS-RSRP value separately. Alternatively or additionally, the process 500 may also include the processor 412 performing L1 filtering for each Rx antenna SRS-RSRP value separately.

[0064] In some implementations, when performing measurements, process 500 may include processor 412 performing CLI-RSSI measurements. In some implementations, when reporting measurement results, process 500 may further include processor 412 reporting CLI-RSSI aggregate results.

[0065] In some implementations, when reporting the measurement results, the process 500 may include the processor 412 reporting one or more other metrics according to the Rx antenna. For example, the one or more other metrics may include at least one of the following metrics: phase difference, peak value, weighted peak value, and standard deviation between multiple Rx antennas.

[0066] In some implementations, when performing the measurement, the process 500 may include the processor 412 selecting which Rx antenna among the plurality of Rx antennas to measure based on the UE configuration.

[0067] In some implementations, when performing measurements, process 500 may include processor 412 performing the measurements in FR1.

[0068] Figure 6 6 is a schematic diagram of an exemplary process 600 according to an embodiment of the present invention. Process 600 may represent a portion or all of various aspects of implementing the various proposed designs, concepts, schemes, systems, and methods described above. More specifically, process 600 may represent an aspect of the proposed concepts and schemes for reverse UE-UE CLI measurements in non-overlapping SBFD deployments. Process 600 may include one or more operations, actions, or functions shown in one or more of blocks 610, 620. Although the various blocks shown are discrete, depending on the desired implementation, the various blocks in process 600 may be split into more blocks, combined into fewer blocks, or some blocks may be deleted. In addition, the blocks / sub-blocks of process 600 may be arranged as follows. Figure 6The process 600 may be performed in the order shown or may be performed in a different order. Moreover, one or more blocks / sub-blocks of the process 600 may be performed iteratively. The process 600 may be implemented by or in the device 410, the device 420, and any variant thereof. For illustrative purposes only and not limitation, the process 600 is described below in the context of the device 410 as a UE (such as UE 110) and the device 420 as a communication entity (such as a network node or a base station (such as network node 125) of a network (such as network 130 as a 5G / NR mobile network). The process 600 may start at block 610.

[0069] At 610, process 600 may include processor 412 of apparatus 410 performing measurements related to SRS transmissions of another UE (eg, apparatus 420) in a SBFD deployment via transceiver 416. Process 600 may proceed from 610 to 620.

[0070] At 620 , process 600 may include processor 412 reporting the measurement result via transceiver 416 . Device 410 as a UE may be configured to measure resources having a QCL-Type D spatial relationship with a PUSCH or PUCCH transmission of device 410 .

[0071] In some embodiments, when performing the measurement, the process 600 may include the processor 412 performing the measurement using the SRS resource configured as the measurement resource. In addition, the SRS resource may be configured with spatial relationship information (SpatialRelationInfo). In some embodiments, the SpatialRelationInfo may be configured with the SRS resource as a reference signal.

[0072] In some implementations, when reporting the measurement results, the process 600 may include the processor 412 reporting via a new field indicating reverse measurement. Alternatively, when reporting the measurement results, the process 600 may include the processor 412 reporting via a new field indicating the use of simulated Tx beams.

[0073] In some implementations, when performing measurements, process 600 may include processor 412 performing the measurements in FR2.

[0074] Additional Notes

[0075] The subject matter described in the present invention sometimes shows different components included in or connected to different other components. But it should be understood that these depicted architectures are only examples, and in fact many other architectures that realize the same function can be implemented. In a conceptual sense, any arrangement of components that realize the same function is effectively "associated", so that the desired function is realized. Therefore, regardless of the architecture or intermediate components, any two components that are combined to realize a specific function in the present invention can be regarded as "associated" to each other, so that the desired function is realized. Similarly, any two components so associated can also be regarded as "operationally connected" or "operationally coupled" to each other to realize the desired function, and any two components that can be so associated can also be regarded as "operationally couplable" to each other to realize the desired function. Specific examples of coupling in operation include but are not limited to physically matching and / or physically interactive components and / or wirelessly interactive and / or wirelessly interactive components and / or logically interactive and / or logically interactive components.

[0076] Further, with respect to any plural and / or singular terms used in the present invention, those skilled in the art may convert from plural to singular and / or from singular to plural when appropriate for content and / or application. For the sake of clarity, various singular / plural interchangeability may be explicitly described in the present invention.

[0077] Furthermore, those skilled in the art will understand that, in general, the terms used in the present invention and especially in the appended claims (e.g., the bodies of the appended claims) are generally intended to be "open" terms, e.g., the term "including" should be interpreted as "including but not limited to", the term "having" should be interpreted as "having at least", the term "comprising" should be interpreted as "including but not limited to", etc. Those skilled in the art will also understand that if a specific number of an introduced claim recitation is intended, such intent will be explicitly recited in the claim, and in the absence of such recitation, such intent is absent. For example, to aid understanding, the appended claims may include the use of the introductory phrases "at least one" and "one or more". However, the use of such phrases should not be interpreted as implying that a claim recitation, through the introduction of the indefinite article "a" or "an", will include any particular claim of such introduced claim recitation to include only one implementation of such recitation, even when the same claim includes the introductory phrase "one or more" or "at least one" and an indefinite article such as "a" or "an", for example, "a and / or an" should be interpreted as meaning "at least one" or "one or more", and the same applies to the use of definite articles used to introduce claim recitations. In addition, even if a specific number of introduced claim recitations is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted as meaning at least the recited number, for example, the unmasked recitation of "two recitations" means at least two recitations or two or more recitations in the absence of other modifiers. Furthermore, where a convention similar to “at least one of A, B, and C, etc.” is used, it is generally intended to be interpreted in the sense that a person skilled in the art would understand this convention (e.g., “a system having at least one of A, B, and C” would include but is not limited to systems having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). Where a convention similar to “at least one of A, B, or C, etc.” is used, it is generally intended to be interpreted in the sense that a person skilled in the art would understand this convention (e.g., “a system having at least one of A, B, or C” would include but is not limited to systems having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). A person skilled in the art would also understand that any transitional words and / or phrases that actually indicate two or more alternatives, whether in the specification, claims, or drawings, should be understood to contemplate the possibility of including one, any, or both of these items. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."

[0078] As can be seen from the above, it can be understood that various embodiments of the present invention have been described for illustrative purposes, and various modifications can be made without departing from the scope and spirit of the present invention. Therefore, the various embodiments disclosed in the present invention are not meant to be restrictive, and the true scope and spirit are determined by the appended claims.

Claims

1. A method comprising: performing, by a processor of the user equipment, measurements related to transmissions of another user equipment in a sub-band full-duplex (SBFD) deployment; as well as The processor reports a measurement result of each of the plurality of receiving Rx antennas.

2. The method according to claim 1, characterized in that Performing the measurement includes performing a Sounding Reference Signal Received Power (SRS-RSRP) measurement.

3. The method according to claim 2, characterized in that Reporting the measurement result further includes reporting an SRS-RSRP aggregation result.

4. The method according to claim 2, characterized in that: Further including: Layer 3 filtering is performed by the processor individually for each Rx antenna SRS-RSRP value.

5. The method according to claim 2, characterized in that: Further including: Layer 1 filtering is performed by the processor separately for each Rx antenna SRS-RSRP value.

6. The method according to claim 1, characterized in that Performing the measurements includes performing a Cross-Link Interference Received Signal Strength Indicator CLI-RSSI measurement.

7. The method according to claim 6, characterized in that Reporting the measurement result further includes reporting a CLI-RSSI aggregation result.

8. The method according to claim 1, characterized in that Reporting the measurement result includes reporting one or more other metrics according to the Rx antenna, wherein the one or more other metrics may include at least one of the following metrics: phase difference between multiple Rx antennas, peak value, weighted peak value, and standard deviation.

9. The method according to claim 1, characterized in that: Performing the measurement includes selecting which Rx antenna of a plurality of Rx antennas to measure based on a user equipment configuration.

10. The method according to claim 1, characterized in that Performing the measurements comprises performing the measurements in a frequency range l.

11. A method comprising: performing, by a processor of the user equipment, measurements related to a sounding reference signal (SRS) transmission of another user equipment in a sub-band full-duplex (SBFD) deployment; as well as The processor reports a measurement result, wherein the user equipment is configured to measure resources having a quasi-co-located-Type D spatial relationship with a physical uplink shared channel or a physical uplink control channel transmission of the user equipment.

12. The method according to claim 11, characterized in that Performing the measurement includes performing the measurement using an SRS resource configured as a measurement resource, and the SRS resource is configured with spatial relationship information.

13. The method according to claim 12, characterized in that The spatial relationship information is configured with the SRS resource as a reference signal.

14. The method according to claim 11, characterized in that Reporting the measurement result includes reporting via a new field indicating a reverse measurement.

15. The method according to claim 11, characterized in that Reporting the measurement results includes reporting via a new field indicating the use of an analog transmit beam.

16. The method according to claim 11, characterized in that Performing the measurements includes performing measurements in frequency range 2 .

17. An apparatus, implemented in a user equipment, comprising: transceiver, used for wireless communication; as well as A processor is coupled to the transceiver and performs the following operations through the transceiver: performing measurements related to transmissions of another user equipment in a sub-band full-duplex (SBFD) deployment; and A measurement result of each of a plurality of receiver Rx antennas is reported.

18. The device according to claim 17, characterized in that Performing the measurement includes performing a Sounding Reference Signal Received Power (SRS-RSRP) measurement.

19. The device according to claim 18, characterized in that The user equipment is configured with a quasi-co-located-Type D spatial relationship with a physical uplink shared channel or a physical uplink control channel transmission of the user equipment.

20. The device according to claim 17, characterized in that Performing the measurements includes performing a Cross-Link Interference Received Signal Strength Indicator CLI-RSSI measurement.

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