Method for CSI and beam reporting enhancement for multi-TRP full duplex

Abstract

Interference measurements may include decoding a channel state information (CSI) report configuration received from a base station. The CSI reporting configuration may be associated with a set of resources for interference measurements. A first UE may communicate with at least a first transmission and reception point (TRP) of a plurality of TRPs, and at least a second TRP of the plurality of TRPs may also communicate with a second UE that generates cross-link interference with the first UE. At a first UE, cross-link interference measurements associated with a second UE may be performed with a CSI reporting configuration.

Description

Technical Field

[0001] The present application relates generally to wireless communication systems, including measuring cross-link interference at a UE experiencing such interference. Background Art

[0002] Wireless mobile communication technology uses various standards and protocols to transmit data between base stations and wireless communication devices. Wireless communication system standards and protocols may include, for example, the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) (such as 4G), 3GPP New Radio (NR) (such as 5G), and the IEEE 802.11 standard for wireless local area networks (WLANs) (commonly referred to as WLANs within industry organizations). ).

[0003] As envisioned by 3GPP, different wireless communication system standards and protocols may use various radio access networks (RANs) to enable base stations of the RAN (which may also sometimes be referred to as RAN nodes, network nodes, or simply nodes) to communicate with wireless communication devices referred to as user equipment (UE). 3GPP RANs may include, for example, Global System for Mobile Communications (GSM), Enhanced Data Rates for GSM Evolution (EDGE) RAN (GERAN), Universal Terrestrial Radio Access Network (UTRAN), Evolved Universal Terrestrial Radio Access Network (E-UTRAN), and / or Next Generation Radio Access Network (NG-RAN).

[0004] Each RAN can use one or more radio access technologies (RATs) for communication between base stations and UEs. For example, GERAN implements GSM and / or EDGE RAT, UTRAN implements Universal Mobile Telecommunications System (UMTS) RAT or other 3GPP RAT, E-UTRAN implements LTE RAT (sometimes referred to as LTE), and NG-RAN implements NR RAT (sometimes also referred to as 5G RAT, 5G NR RAT, or NR in this document). In some deployments, E-UTRAN may also implement NR RAT. In some deployments, NG-RAN may also implement LTE RAT.

[0005] The base station used by the RAN may correspond to the RAN. An example of an E-UTRAN base station is an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (also commonly denoted as an evolved Node B, enhanced Node B, eNodeB, or eNB). An example of an NG-RAN base station is a Next Generation Node B (also sometimes referred to as a gNodeB or gNB).

[0006] The RAN provides communication services together with external entities through its connection with the Core Network (CN). For example, E-UTRAN can utilize the Evolved Packet Core (EPC) network, while NG-RAN can utilize the 5G Core Network (5GC). BRIEF DESCRIPTION OF THE DRAWINGS

[0007] To easily identify the discussion of any particular element or act, the most significant digit(s) in a reference number refers to the drawing number that first introduces the element.

[0008] Figure 1 An exemplary wireless environment that may introduce cross-link interference is shown according to one embodiment.

[0009] Figure 2 An exemplary wireless environment that may introduce cross-link interference is shown according to one embodiment.

[0010] Figure 3 An exemplary wireless environment that may introduce cross-link interference is shown according to one embodiment.

[0011] Figure 4 A flow chart of a method for measuring cross-link interference according to one embodiment is shown.

[0012] Figure 5 An exemplary architecture of a wireless communication system according to embodiments disclosed herein is shown.

[0013] Figure 6 A system for performing signaling between a wireless device and a network device according to embodiments disclosed herein is shown. DETAILED DESCRIPTION

[0014] The embodiments are described with respect to a UE. However, reference to a UE is provided for illustrative purposes only. The exemplary embodiments may be used with any electronic component that can establish a connection with a network and is configured with hardware, software, and / or firmware for exchanging information and data with the network. Therefore, a UE as described herein is used to represent any suitable electronic component.

[0015] Currently, the 5G standard supports multi-transmission / reception point (multi-TRP) / multi-panel operation (i.e., gNB communicates with UE from multiple TRPs or multiple panels). In particular, the current multi-TRP / multi-panel operation can support: 1. Multiple TRPs (e.g., two) from the same cell or different cells; 2. Both ideal backhaul and non-ideal backhaul; 3. Multiple TRPs transmit the same signal (i.e., for reliability enhancement) or different signals (i.e., for throughput enhancement) to the UE; 4. The UE transmits the same signal to different TRPs in a time domain division (TDM) manner for reliability enhancement; and 5. Configure the time slot format at the broadcast or multicast level, including: a. For the UE, the uplink (UL) / downlink (DL) time slot can be the same for all TRPs in multi-TRP operation.

[0016] In 3GPP Release 18 (Rel-18), full-duplex based multi-TRP / multi-panel operation may be introduced, including: 1. Different time slot formats for different TRPs / panels; 2. For the UE operating downlink reception in the time slot, the UE may receive interference from another UE; and 3. For the UE operating uplink transmission in the time slot, the TRP / panel may receive interference from another UE.

[0017] Figure 1 An exemplary wireless environment in which cross-link interference may be introduced is shown. As shown in the figure, Figure 1 The example embodiment includes a TRP 102, an interfered UE 104 receiving a downlink transmission (panel 1) 108, and an interfering UE 106 sending an uplink transmission (panel 2) 110. Specifically, the downlink transmission (panel 1) 108 and the uplink transmission (panel 2) 110 may be transmitted using TDM. In such a case, UE 106 (i.e., the interfering UE) may generate cross-link interference to UE 104 (i.e., the interfered UE).

[0018] Figure 2 Another exemplary environment where interference may be introduced is shown. As shown in the figure, Figure 2 The example embodiment includes a TRP 202 that sends a downlink transmission 206 to an interfered UE 204, and an interfering UE 210 that sends an uplink transmission 212 to a TRP 208. Specifically, the downlink transmission 206 and the uplink transmission 212 may be transmitted using TDM. In such a case, cross-link interference associated with the UE (and inter-cell interference for the TRP) may occur.

[0019] Therefore, the principles described in this document include schemes associated with channel state information (CSI) and beam measurement enhancement for multi-TRP / multi-panel based full-duplex for cross-link interference, including: 1. Interference measurement operation of CSI; 2. Interference measurement operation of Layer 1 signal to interference plus noise ratio (L1-SINR); and 3. Sounding Reference Signal (SRS) enhancement for interference measurement.

[0020] An initial scheme may include measuring cross-link interference of a victim UE. As part of this, the interfering UE may transmit uplink signals at multiple resources (e.g., SRS / Physical Uplink Control Channel (PUCCH) / Physical Uplink Shared Channel (PUSCH)). In addition, the victim UE may calculate CSI / L1-SINR based on the interference measured relative to the same resources. In addition, to facilitate UE pairing, the gNB may configure multiple interfering UEs, and the victim UE may report CSI / L1-SINR based on one or more UEs selected by the interfered UE.

[0021] Figure 3 Another exemplary environment where cross-link interference (and various other types of interference) may be introduced is shown. As shown, Figure 3 The TRP 302 includes sending channel measurements (Panel 1) 306 to the interfered UE 304 and receiving uplink transmissions 312 from the interfering UE 310, and the TRP 308 (i.e., the interfering cell). Figure 3 An exemplary environment of may include MU-MIMO interference measurement (Panel 2) 316 at TRP 302 and inter-cell interference 314 caused by TRP 308. It is worth noting that Figure 3 The signals shown in (e.g., channel measurement (panel 1) 306, uplink transmission 312, etc.) may be transmitted using TDM. Thus, such scenarios may include cross-link interference (caused by UE 310), MU-MIMO interference, and inter-cell interference.

[0022] The CSI / L1-SINR enhancement described above for facilitating cross-link interference measurement (eg, Figure 1 An interfered UE 104 is shown measuring interference from an interfering UE 106, Figure 2The interfered UEs 204 that measure the interference from the interfering UE 210, and the interfered UEs 304 that measure the interference from the interfering UE 310) may include three options. In the first option, the gNB may configure a set of SRS resources for interference measurement in the CSI report configuration (CSI-reportConfig). In such an implementation, the UE may count the interference measured from the SRS resources. Optionally, the gNB may also configure a set of interference measurement resources (e.g., CSI interference measurement (CSI-IM) and / or non-zero power (NZP) CSI reference signal (CSI-RS)) for other interference measurements, where each interference measurement resource (e.g., CSI-IM and / or NZP CSI-RS resource) is associated with one channel measurement resource. It is worth noting that CSI-IM resources are generally specifically used for measuring inter-cell interference (as further shown in the scenario of Figure 3 ), and NZP CSI-RS resources are generally specifically used for MU-MIMO interference measurement.

[0023] In addition, the first option for CSI / L1-SINR enhancement to facilitate cross-link interference measurement may include various sub-options, including: a. The SRS resources and the channel measurement resources (CMR) may be mapped one-to-one (i.e., based on one CMR, one CSI is measured, and the interfered UE may identify one SRS resource for measuring cross-link interference); or b. One CMR may be mapped to N SRS resources, where N is a positive integer. In addition, the following options may apply to option b: i. The UE may calculate the interference for CSI / L1-SINR reporting from all the SRS resources; or ii. The UE may calculate the interference for CSI / L1-SINR reporting based on M (M < N) SRS resources out of the N SRS resources, where the UE may report the SRS resource indicator (SRI). For example, the UE may measure the interference from all the SRS resources and select the one with the least interference to report, which may facilitate UE pairing in gNB scheduling. In another example, the value of M may be configured by higher layer signaling or DCI, and the UE may report the maximum value of M according to the UE's capabilities. In such an implementation, the value of N may be configured by higher layer signaling or downlink control information (DCI).

[0024] Whether using option a or option b of the first option, the following may also apply: 1. A dedicated time domain limit may be configured for the SRS, or a time domain limit of interference may be applied to the SRS; and / or 2. The UE may use the same receive (Rx) beam to measure the SRS and the CMR (i.e., quasi-co-location (QCL) type D). For the first option of CSI / L1-SINR enhancement to facilitate cross-link interference measurement, the following examples may also apply:

[0025]

[0026] A second option for CSI / L1-SINR enhancement to facilitate cross-link interference measurement may include the gNB configuring additional CSI-IM resources for cross-link interference measurement in the CSI-reportConfig. Additional CSI-IM modes may be introduced to align with the modes for SRS resources (e.g., comb-2 / comb-4 / comb-8 based interleaved frequency division multiple access (IFDMA) mode in one or more symbols). Alternatively, additional CSI-IM modes may be introduced to align with the modes of PUSCH / PUCCH, where the CSI-IM may take consecutive subcarriers / symbols in the bandwidth. It is noted that such bandwidth may be configured by radio resource control (RRC) or dynamically changed by DCI.

[0027] In addition, a second option for CSI / L1-SINR enhancement to facilitate cross-link interference measurement may include various sub-options, including: a. one-to-one mapping of additional CSI-IM resources and channel measurement resources (CMR); or b. one CMR is mapped to N additional CSI-IM resources. Option b of the second option may have two additional options, including: i. the UE calculates the interference for CSI / L1-SINR reporting from all additional CSI-IM resources; or ii. the UE calculates the interference for CSI / L1-SINR reporting based on M (M < N) SRS resources out of N SRS resources, where the UE may report a CSI-IM resource indicator (CRI). In such an implementation, the value of N may be configured by higher layer signaling or DCI.

[0028] Whether using option a or option b of the second option, the following may also apply: 1. Dedicated time domain limitations may be configured for the additional CSI-IM, or time domain limitations for interference may be applied to the additional CSI-IM; and / or 2. The UE may measure the CMR and the additional CSI-IM with the same Rx beam (i.e., QCL type D). For the second option for CSI / L1-SINR enhancement to facilitate cross-link interference measurement, the following may also apply:

[0029]

[0030] The third option for CSI / L1-SINR enhancement to facilitate cross-link interference measurement may include the gNB configuring additional NZP-CSI-RS resources for cross-link interference measurement in the CSI-reportConfig. An additional NZP-CSI-RS pattern may be introduced to align with the pattern for SRS resources (e.g., comb-2 / comb-4 / comb-8 based IFDMA pattern in one or more symbols), and the CSI-RS sequence may be generated based on the SRS sequence. Alternatively, an additional NZP-CSI-RS pattern may be introduced to align with the pattern of PUSCH / PUCCH, where the CSI-RS may take consecutive subcarriers / symbols in the bandwidth. It is noted that such bandwidth may be configured by RRC or dynamically changed by DCI.

[0031] Additionally, the second option for CSI / L1-SINR enhancement to facilitate cross-link interference measurement may include various sub-options, including: a. one-to-one mapping of additional NZP-CSI-RS resources and channel measurement resources (CMR); or b. one CMR being mapped to N additional NZP-CSI-RS resources. Option b of the third option may have two additional options, including: i. the UE calculates the interference for CSI / L1-SINR reporting from all additional NZP-CSI-RS resources; or ii. the UE calculates the interference for CSI / L1-SINR reporting based on M (M < N) SRS resources of the N NZP-CSI-RS resources, where the UE may report the NZP-CSI-RS resource indicator (CRI). In such an implementation, the value of N may be configured by higher layer signaling or DCI.

[0032] Whether using option a or option b of the third option, the following may also apply: 1. Dedicated time domain restrictions may be configured for the additional NZP-CSI-RS, or time domain restrictions for interference may be applied to the additional NZP-CSI-RS; and / or 2. The UE may measure the CMR and the additional NZP-CSI-RS with the same Rx beam (i.e., QCL type D). For the third option for CSI / L1-SINR enhancement to facilitate cross-link interference measurement, the following may also apply:

[0033]

[0034]

[0035] As briefly described above, this article also provides an SRS enhancement scheme. In particular, a new candidate usage value may be introduced for an SRS resource set (e.g., interferenceMeas). Alternatively, one or more SRSs (e.g., SRSs for a codebook) may be reused for interference measurement. It is noteworthy that the beam used for SRS (i.e., the spatial relationship or transmission configuration indicator (TCI)) may be configured by an RRC / medium access control control element (MAC CE) or indicated by a DCI.

[0036] For the second and third options discussed above for CSI / L1-SINR enhancement to facilitate cross-link interference measurement, if no additional pattern of CSI-IM / CSI-RS is introduced, a new SRS pattern may be introduced to align with the CSI-IM / CSI-RS pattern. In particular, for the second option, the pattern of SRS may be introduced as defined for CSI-IM in 5.2.2.4 of 38.614. Similarly, for the third option, the pattern of SRS may be introduced as defined for CSI-RS in 7.4.1.5.3 of 38.211. In such an implementation (i.e., for the third option), an SRS sequence may be generated based on a CSI-RS sequence.

[0037] In addition, for CSI and / or L1-SINR measurements, the number of antenna ports for SRS may be limited to no more than two. Therefore, in some embodiments, SRS may be configured with a single antenna port. In addition, the gNB may configure the power control parameters of SRS through higher layer signaling or DCI. The closed-loop transmit power control (TPC) command may be indicated by a unicast DCI signal or a group common DCI signal.

[0038] Figure 4 A flow chart of a method 400 for measuring cross-link interference at an interfered UE is shown. In box 402, the method 400 decodes a channel state information (CSI) report configuration received from a base station. The CSI report configuration may be associated with a set of resources for interference measurement. A first UE may communicate with at least a first of a plurality of transmission and reception points (TRPs), and at least a second of the plurality of TRPs may also communicate with a second UE that generates cross-link interference for the first UE. For example, UE 204 may communicate with TRP 202, and UE 210 may communicate with TRP 202, which may cause cross-link interference from UE 210 (i.e., the interfering UE) to UE 204 (i.e., the interfered UE). In box 404, the method 400 performs cross-link interference measurements associated with a second UE at the first UE using the CSI report configuration. For example, UE 204 may utilize the configured resources to measure cross-link interference caused by UE 210.

[0039] The method 400 may also include that the first TRP and the second TRP are the same TRP. The method 400 may also include that a set of resources for interference measurement includes a sounding reference signal (SRS) resource. The method 400 may also include that a set of resources also includes at least one of a CSI interference measurement (CSI-IM) resource or a non-zero power (NZP) CSI reference signal (CSI-RS) resource.

[0040] The method 400 may also include mapping each of the SRS resources one-to-one to each of a set of channel measurement resources (CMRs) configured by the base station for the UE. The method 400 may also include at least one of the CMRs being mapped to more than one SRS resource. The method 400 may also include the UE measuring at least one SRS resource and at least one CMR using the same receive (Rx) beam.

[0041] The method 400 may also include a set of resources for interference measurement including CSI-IM resources. The method 400 may also include aligning a pattern of CSI-IM resources with a pattern of SRS resources. The method 400 may also include one-to-one mapping of each of the CSI-IM resources to each of a set of channel measurement resources (CMRs) configured by the base station for the UE.

[0042] The method 400 may also include at least one of the CMRs being mapped to more than one CSI-IM resource. The method 400 may also include a set of resources for interference measurement including non-zero power (NZP) CSI reference signal (CSI-RS) resources. The method 400 may also include a pattern of NZP CSI-RS resources being aligned with a pattern of SRS resources and a sequence of CSI-RS being generated based on a sequence of SRS. The method 400 may also include each of the NZP CSI-RS resources being mapped one-to-one to each of a set of channel measurement resources (CMRs) configured by the base station for the UE.

[0043] The method 400 may also include at least one of the CMRs being mapped to more than one NZP CSI-RS resource. The method 400 may also include a set of resources for interference measurement including at least one of a sounding reference signal (SRS) resource, a CSI interference measurement (CSI-IM) resource, or a non-zero power (NZP) CSI reference signal (CSI-RS) resource. The method 400 may also include when a set of resources for interference measurement includes CSI-IM resources or NZP CSI-RS resources, the pattern of the CSI-IM resources or the NZP CSI-RS resources is aligned with the pattern of the physical uplink shared channel (PUSCH) and the physical uplink control channel (PUCCH).

[0044] Embodiments contemplated herein include an apparatus comprising means for performing one or more elements of the method 400. The apparatus may be, for example, an apparatus that is a UE (such as the wireless device 602 as a UE, as described herein).

[0045] Embodiments contemplated herein include one or more non-transitory computer-readable media including instructions that, when executed by one or more processors of an electronic device, cause the electronic device to perform one or more elements of method 400. The non-transitory computer-readable medium may be, for example, a memory of a UE (such as memory 606 of wireless device 602 as a UE, as described herein).

[0046] Embodiments contemplated herein include an apparatus comprising logic, modules, or circuitry for performing one or more elements of the method 400. The apparatus may be, for example, an apparatus that is a UE (such as the wireless device 602 as a UE, as described herein).

[0047] Embodiments contemplated herein include an apparatus comprising: one or more processors and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of the method 400. The apparatus may be, for example, an apparatus that is a UE (such as the wireless device 602 as a UE, as described herein).

[0048] Embodiments contemplated herein include a signal as described in or in connection with one or more elements of method 400 .

[0049] Embodiments contemplated herein include a computer program or computer program product having instructions, wherein execution of the program by a processor causes the processor to perform one or more elements of the method 400. The processor may be a processor of a UE (such as the processor 604 of the wireless device 602 as a UE, as described herein). These instructions may be located, for example, in the processor and / or on a memory of the UE (such as the memory 606 of the wireless device 602 as a UE, as described herein).

[0050] Figure 5 An exemplary architecture of a wireless communication system 500 according to an embodiment disclosed herein is shown. The description provided below is for an exemplary wireless communication system 500 operating in conjunction with the LTE system standard and / or the 5G or NR system standard provided in the 3GPP technical specifications.

[0051] like Figure 5As shown, the wireless communication system 500 includes UE 502 and UE 504 (however, any number of UEs may be used). In this example, UE 502 and UE 504 are shown as smartphones (e.g., handheld touch screen mobile computing devices capable of connecting to one or more cellular networks), but may also include any mobile or non-mobile computing device configured for wireless communication.

[0052] UE 502 and UE 504 may be configured to be communicatively coupled to RAN 506. In an embodiment, RAN 506 may be NG-RAN, E-UTRAN, etc. UE 502 and UE 504 utilize connections (or channels) (shown as connection 508 and connection 510, respectively) with RAN 506, each of which includes a physical communication interface. RAN 506 may include one or more base stations, such as base station 512 and base station 514, that enable connection 508 and connection 510.

[0053] In this example, connection 508 and connection 510 are air interfaces that enable such communicative coupling and may conform to the RAT used by RAN 506, such as, for example, LTE and / or NR.

[0054] In some embodiments, UE 502 and UE 504 may also directly exchange communication data via side link interface 516. UE 504 is illustrated as being configured to access an access point (illustrated as AP 518) via connection 520. For example, connection 520 may include a local wireless connection, such as a connection conforming to any IEEE 802.11 protocol, wherein AP 518 may include In this example, AP 518 can connect to another network (eg, the Internet) without going through CN 524.

[0055] In an embodiment, UE 502 and UE 504 may be configured to communicate with each other or with base station 512 and / or base station 514 over a multi-carrier communication channel using orthogonal frequency division multiplexing (OFDM) communication signals according to various communication techniques, such as, but not limited to, orthogonal frequency division multiple access (OFDMA) communication techniques (e.g., for downlink communication) or single carrier frequency division multiple access (SC-FDMA) communication techniques (e.g., for uplink and ProSe or sidelink communication), although the scope of the embodiments is not limited in this respect. The OFDM signal may include multiple orthogonal subcarriers.

[0056] In some embodiments, all or part of the base station 512 or the base station 514 may be implemented as one or more software entities running on a server computer as part of a virtual network. In addition, or in other embodiments, the base station 512 or the base station 514 may be configured to communicate with each other via the interface 522. In an embodiment where the wireless communication system 500 is an LTE system (e.g., when the CN 524 is an EPC), the interface 522 may be an X2 interface. The X2 interface may be defined between two or more base stations (e.g., two or more eNBs, etc.) connected to the EPC and / or between two eNBs connected to the EPC. In an embodiment where the wireless communication system 500 is an NR system (e.g., when the CN 524 is a 5GC), the interface 522 may be an Xn interface. The Xn interface is defined between two or more base stations (e.g., two or more gNBs, etc.) connected to the 5GC, between the base station 512 (e.g., gNB) and the eNB connected to the 5GC, and / or between two eNBs connected to the 5GC (e.g., CN524).

[0057] RAN 506 is illustrated as being communicatively coupled to CN 524. CN 524 may include one or more network elements 526 configured to provide various data and telecommunication services to customers / subscribers (e.g., UE 502 and users of UE 504) connected to CN 524 via RAN 506. Components of CN 524 may be implemented in one physical device or separate physical devices including components for reading and executing instructions from a machine-readable or computer-readable medium (e.g., a non-transitory machine-readable storage medium).

[0058] In an embodiment, CN 524 may be an EPC, and RAN 506 may be connected to CN 524 via an S1 interface 528. In an embodiment, S1 interface 528 may be divided into two parts: an S1 user plane (S1-U) interface, which carries traffic data between base station 512 or base station 514 and a serving gateway (S-GW); and an S1-MME interface, which is a signaling interface between base station 512 or base station 514 and a mobility management entity (MME).

[0059] In an embodiment, CN 524 may be a 5GC, and RAN 506 may be connected to CN 524 via an NG interface 528. In an embodiment, NG interface 528 may be divided into two parts: an NG user plane (NG-U) interface, which carries traffic data between base station 512 or base station 514 and a user plane function (UPF); and an S1 control plane (NG-C) interface, which is a signaling interface between base station 512 or base station 514 and an access and mobility management function (AMF).

[0060] In general, the application server 530 may be an element that provides applications that use Internet Protocol (IP) bearer resources with the CN 524 (e.g., packet-switched data services). The application server 530 may also be configured to support one or more communication services (e.g., VoIP sessions, group communication sessions, etc.) for the UE 502 and UE 504 via the CN 524. The application server 530 may communicate with the CN 524 via an IP communication interface 532.

[0061] Figure 6 A system 600 for performing signaling 634 between a wireless device 602 and a network device 618 according to an embodiment disclosed herein is shown. The system 600 can be part of a wireless communication system as described herein. The wireless device 602 can be, for example, a UE of a wireless communication system. The network device 618 can be, for example, a base station (e.g., an eNB or a gNB) of a wireless communication system.

[0062] The wireless device 602 may include one or more processors 604. The processor 604 may execute instructions to perform various operations of the wireless device 602 as described herein. The processor 604 may include one or more baseband processors implemented using, for example, a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.

[0063] The wireless device 602 may include a memory 606. The memory 606 may be a non-transitory computer-readable storage medium storing instructions 608 (which may include, for example, instructions executed by the processor 604). The instructions 608 may also be referred to as program code or a computer program. The memory 606 may also store data used by the processor 604 and results calculated by the processor.

[0064] The wireless device 602 may include one or more transceivers 610, which may include radio frequency (RF) transmitter and / or receiver circuitry that uses an antenna 612 of the wireless device 602 to facilitate signaling (e.g., signaling 634) to and / or from the wireless device 602 with other devices (e.g., network device 618) in accordance with a corresponding RAT.

[0065] The wireless device 602 may include one or more antennas 612 (e.g., one, two, four, or more). For embodiments with multiple antennas 612, the wireless device 602 may utilize the spatial diversity of such multiple antennas 612 to send and / or receive multiple different data streams on the same time-frequency resources. This approach may be referred to as, for example, a multiple-input multiple-output (MIMO) approach (referring to multiple antennas used on the transmitting device and receiving device sides to implement this aspect, respectively). MIMO transmission by the wireless device 602 may be implemented based on precoding (or digital beamforming) applied to the wireless device 602, which multiplexes data streams between the antennas 612 based on known or assumed channel characteristics, so that each data stream is received at an appropriate signal strength relative to other streams and at a desired location in the spatial domain (e.g., the location of a receiver associated with the data stream). Certain implementations may use a single-user MIMO (SU-MIMO) approach (where data streams are all directed to a single receiver) and / or a multi-user MIMO (MU-MIMO) approach (where individual data streams may be directed to individual (different) receivers at different locations in the spatial domain).

[0066] In certain embodiments with multiple antennas, the wireless device 602 may implement analog beamforming techniques whereby the phases of signals transmitted by antennas 612 are relatively adjusted so that the (joint) transmissions of antennas 612 may be directed (this is sometimes referred to as beam steering).

[0067] The wireless device 602 may include one or more interfaces 614. The interfaces 614 may be used to provide input to or output from the wireless device 602. For example, a wireless device 602 that is a UE may include an interface 614, such as a microphone, a speaker, a touch screen, buttons, etc., to allow a user of the UE to input and / or output to the UE. Other interfaces of such a UE may be composed of transmitters, receivers, and other circuits (e.g., in addition to the transceiver 610 / antenna 612 described above), which allow the UE to communicate with other devices and may communicate according to known protocols (e.g., etc.) to perform the operation.

[0068] The wireless device 602 may include a cross-link interference module 616. The cross-link interference module 616 may be implemented via hardware, software, or a combination thereof. For example, the cross-link interference module 616 may be implemented as a processor, circuit, and / or instructions 608 stored in the memory 606 and executed by the processor 604. In some examples, the cross-link interference module 616 may be integrated within the processor 604 and / or the transceiver 610. For example, the cross-link interference module 616 may be implemented by a combination of software components (e.g., executed by a DSP or general purpose processor) and hardware components (e.g., logic gates and circuits) within the processor 604 or the transceiver 610.

[0069] The cross-link interference module 616 may be used in various aspects of the present disclosure, for example, Figures 1 to 4 The cross-link interference module 616 is configured to facilitate measuring cross-link interference in a wireless environment.

[0070] The network device 618 may include one or more processors 620. The processor 620 may execute instructions to perform various operations of the network device 618 as described herein. The processor 604 may include one or more baseband processors implemented using, for example, a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.

[0071] The network device 618 may include a memory 622. The memory 622 may be a non-transitory computer-readable storage medium storing instructions 624 (which may include, for example, instructions executed by the processor 620). The instructions 624 may also be referred to as program code or a computer program. The memory 622 may also store data used by the processor 620 and results calculated by the processor.

[0072] The network device 618 may include one or more transceivers 626, which may include RF transmitter and / or receiver circuitry that uses an antenna 628 of the network device 618 to facilitate signaling (e.g., signaling 634) to and / or from the network device 618 with other devices (e.g., wireless device 602) in accordance with a corresponding RAT.

[0073] The network device 618 may include one or more antennas 628 (e.g., one, two, four, or more). In embodiments with multiple antennas 628, the network device 618 may perform MIMO, digital beamforming, analog beamforming, beam steering, etc. as described above.

[0074] The network device 618 may include one or more interfaces 630. The interface 630 may be used to provide input to or output from the network device 618. For example, the network device 618 as a base station may include an interface 630 consisting of a transmitter, a receiver, and other circuits (e.g., in addition to the transceiver 626 / antenna 628 described above) that enables the base station to communicate with other equipment in the core network and / or enables the base station to communicate with external networks, computers, databases, etc., in order to achieve the purpose of performing operations, management, and maintenance of the base station or other equipment operably connected thereto.

[0075] The network device 618 may include a cross-link interference module 632. The cross-link interference module 632 may be implemented via hardware, software, or a combination thereof. For example, the cross-link interference module 632 may be implemented as a processor, circuit, and / or instructions 624 stored in the memory 622 and executed by the processor 620. In some examples, the cross-link interference module 632 may be integrated within the processor 620 and / or the transceiver 626. For example, the cross-link interference module 632 may be implemented by a combination of software components (e.g., executed by a DSP or general purpose processor) and hardware components (e.g., logic gates and circuits) within the processor 620 or the transceiver 626.

[0076] The cross-link interference module 632 may be used in various aspects of the present disclosure, for example, Figures 1 to 4 The cross-link interference module 632 is configured to facilitate providing resources for measuring cross-link interference in a wireless environment.

[0077] For one or more embodiments, at least one of the components shown in one or more of the foregoing figures may be configured to perform one or more operations, techniques, processes and / or methods as described herein. For example, the baseband processor described herein in conjunction with one or more of the foregoing figures may be configured to operate according to one or more of the examples described herein. For another example, the circuit system associated with the UE, base station, network element, etc. described above in conjunction with one or more of the foregoing figures may be configured to operate according to one or more of the examples shown herein.

[0078] Unless otherwise expressly stated, any of the above embodiments may be combined with any other embodiment (or combination of embodiments). The foregoing description of one or more specific implementations provides illustration and description, but is not intended to be exhaustive or to limit the scope of the embodiments to the precise form disclosed. In view of the above teachings, modifications and variations are possible or can be obtained from the practice of various embodiments.

[0079] Embodiments and implementations of the systems and methods described herein may include various operations that may be embodied in machine executable instructions to be executed by a computer system. A computer system may include one or more general or special purpose computers (or other electronic devices). A computer system may include hardware components that include specific logic components for performing operations, or may include a combination of hardware, software, and / or firmware.

[0080] It should be appreciated that the systems described herein include descriptions of specific embodiments. These embodiments may be combined into a single system, partially incorporated into other systems, separated into multiple systems, or otherwise divided or combined. In addition, it is contemplated that parameters, attributes, aspects, etc. of one embodiment may be used in another embodiment. For clarity, these parameters, attributes, aspects, etc. are described only in one or more embodiments, and it should be appreciated that unless otherwise stated herein, these parameters, attributes, aspects, etc. may be combined with or substituted for parameters, attributes, aspects, etc. of another embodiment.

[0081] It is understood that the use of personally identifiable information should be subject to privacy policies and practices that are generally recognized to meet or exceed industry or government requirements for maintaining user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of the authorized use should be clearly stated to users.

[0082] Although the foregoing has been described in considerable detail for the sake of clarity, it will be apparent that certain changes and modifications may be made without departing from the principles of the invention. It should be noted that there are many alternative ways to implement both the processes and the apparatus described herein. Therefore, the embodiments of the present invention are to be regarded as illustrative rather than restrictive, and the specification is not limited to the details given herein, but may be modified within the scope and equivalents of the appended claims.

Claims

1. A user equipment (UE), comprising: processor; as well as a memory storing instructions that, when executed by the processor, configure the processor to: decoding a channel state information (CSI) reporting configuration received from a base station, the CSI reporting configuration being associated with a set of resources for interference measurement, the first UE communicating with at least a first of a plurality of transmission and reception points (TRPs), at least a second of the plurality of TRPs also communicating with a second UE generating cross-link interference for the first UE; as well as Cross-link interference measurements associated with the second UE are performed at the first UE using the CSI reporting configuration.

2. The UE according to claim 1, wherein the first TRP and the second TRP are the same TRP.

3. The UE of claim 1, wherein the set of resources used for interference measurement comprises sounding reference signal (SRS) resources.

4. The UE of claim 3, wherein the set of resources further comprises at least one of CSI interference measurement (CSI-IM) resources or non-zero power (NZP) CSI reference signal (CSI-RS) resources. 5 . The UE of claim 3 , wherein each of the SRS resources is mapped one-to-one to each of a set of channel measurement resources (CMRs) configured by the base station for the UE. The UE of claim 3 , wherein at least one of the CMRs is mapped to more than one SRS resource. 7 . The UE of claim 3 , wherein the UE measures at least one SRS resource and at least one CMR using the same receive (Rx) beam.

8. The UE of claim 1, wherein the set of resources used for interference measurement comprises CSI-IM resources.

9. The UE of claim 8, wherein a pattern of the CSI-IM resources is aligned with a pattern of SRS resources.

10. The UE of claim 8, wherein each of the CSI-IM resources is mapped one-to-one to each of a set of channel measurement resources (CMRs) configured by the base station for the UE.

11. The UE of claim 8, wherein at least one of the CMRs is mapped to more than one CSI-IM resource.

12. The UE of claim 1, wherein the set of resources used for interference measurement comprises non-zero power (NZP) CSI reference signal (CSI-RS) resources. 13 . The UE of claim 12 , wherein a pattern of the NZP CSI-RS resources is aligned with a pattern of SRS resources, and a sequence of the CSI-RS is generated based on a sequence of the SRS.

14. The UE of claim 12, wherein each of the NZP CSI-RS resources is mapped one-to-one to each of a set of channel measurement resources (CMRs) configured by the base station for the UE.

15. The UE of claim 12, wherein at least one of the CMRs is mapped to more than one NZP CSI-RS resource.

16. A method for interference measurement at a first user equipment (UE), the method comprising: decoding a channel state information (CSI) reporting configuration received from a base station, the CSI reporting configuration being associated with a set of resources for interference measurement, the first UE communicating with at least a first of a plurality of transmission and reception points (TRPs), at least a second of the plurality of TRPs also communicating with a second UE generating cross-link interference for the first UE; as well as Cross-link interference measurements associated with the second UE are performed at the first UE using the CSI reporting configuration.

17. The method of claim 16, wherein the set of resources used for interference measurement comprises at least one of sounding reference signal (SRS) resources, CSI interference measurement (CSI-IM) resources, or non-zero power (NZP) CSI reference signal (CSI-RS) resources.

18. The method of claim 16, wherein when the set of resources used for interference measurement includes CSI-IM resources or NZP CSI-RS resources, a pattern of the CSI-IM resources or the NZP CSI-RS resources is aligned with a pattern of a physical uplink shared channel (PUSCH) and a physical uplink control channel (PUCCH).

19. A non-transitory computer-readable storage medium comprising instructions that, when executed by a processor of user equipment, cause the processor to: decoding a channel state information (CSI) reporting configuration received from a base station, the CSI reporting configuration being associated with a set of resources for interference measurement, the first UE communicating with at least a first of a plurality of transmission and reception points (TRPs), at least a second of the plurality of TRPs also communicating with a second UE generating cross-link interference for the first UE; and Cross-link interference measurements associated with the second UE are performed at the first UE using the CSI reporting configuration.

20. The non-transitory computer-readable storage medium of claim 19, wherein the set of resources used for interference measurement comprises at least one of a sounding reference signal (SRS) resource, a CSI interference measurement (CSI-IM) resource, or a non-zero power (NZP) CSI reference signal (CSI-RS) resource.

Images