Techniques for reference signal interference cancellation or rate matching

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) can receive, from a base station, information identifying an association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT. The UE can perform measurements for the first cell. The UE can determine that the measurements for the first cell satisfy a threshold. The UE can perform an interference cancellation operation for a reference signal of the second cell, or a de-weighting operation for one or more resource elements in which reference signal interference, based at least in part on the determination that the measurements for the first cell satisfy the threshold and the association between the first cell and the second cell. Numerous other aspects are described.

Description

[0001] Cross-reference to related applications

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 200,859, filed March 31, 2021, entitled "TECHNIQUES FOR REFERENCE SIGNAL INTERFERENCE CANCELING OR RATE MATCHING", and U.S. Non-Provisional Patent Application No. 17 / 452,119, filed October 25, 2021, entitled "TECHNIQUES FOR REFERENCE SIGNAL INTERFERENCE CANCELING OR RATE MATCHING", which are hereby expressly incorporated by reference.

[0003] open field

[0004] Various aspects of this disclosure generally relate to wireless communication, and more particularly to techniques and apparatus for reference signal interference cancellation or rate matching.

[0005] Related technical descriptions

[0006] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is an enhancement set of the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP).

[0007] A wireless network may include one or more base stations that support communication for one or more user equipment (UEs). UEs may communicate with base stations via downlink and uplink communication. "Downlink" (or "DL") refers to the communication link from the base station to the UE, while "uplink" (or "UL") refers to the communication link from the UE to the base station.

[0008] The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different UEs to communicate at the city, country, region, and / or global levels. New Radio (NR) (which may be referred to as 5G) is an enhancement set to the LTE mobile standard issued by 3GPP. NR is designed to better support mobile broadband Internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) (CP-OFDM) on the downlink, and CP-OFDM and / or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation to improve spectral efficiency, reduce costs, improve service, utilize new spectrum, and better integrate with other open standards. Further improvements to LTE, NR, and other radio access technologies remain useful as the demand for mobile broadband access continues to grow.

[0009] Overview

[0010] In some aspects, a method of wireless communication performed by a user equipment (UE) includes: receiving from a base station information about an association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT; performing a measurement for the first cell; determining that the measurement for the first cell satisfies a threshold; and performing interference cancellation operations on a reference signal of the second cell, or performing deweighting operations on one or more resource elements where the reference signal interferes, based at least in part on the determination of the measurement satisfaction threshold for the first cell and the association between the first cell and the second cell.

[0011] In some respects, the reference signal is a reference signal that varies from cell to cell, a channel state information reference signal, a primary synchronization signal, or a secondary synchronization signal.

[0012] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0013] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0014] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0015] In some respects, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0016] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0017] In some respects, first and second cells share downlink time and frequency resources.

[0018] In some aspects, the method includes receiving information identifying the configuration of a cell-specific reference signal for a second cell.

[0019] In some respects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0020] In some respects, interference cancellation operations are performed at least in part based on the configuration of reference signals that vary from cell to cell.

[0021] In some aspects, the method includes receiving information on at least one of a timing offset or a power offset between a downlink signal identifying a first cell and a reference signal identifying a second cell.

[0022] In some aspects, the method includes: receiving information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0023] In some respects, performing interference cancellation operations includes: generating a copy of the interference signal; and subtracting a copy of the interference signal from one or more resource elements.

[0024] In some respects, the first and second cells use waveforms based on orthogonal frequency division multiplexing (OFDM) and the same subcarrier spacing.

[0025] In some aspects, the method includes: receiving a Physical Downlink Shared Channel (PDSCH) transmission on a first cell, wherein interference cancellation operations are performed when the PDSCH transmission is received.

[0026] In some aspects, a wireless communication method performed by a base station includes: generating information identifying an association between a first cell of a first RAT and a second cell of a second RAT; and transmitting to a UE the information identifying the association between the first cell of the first RAT and the second cell of the second RAT.

[0027] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0028] In some respects, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0029] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0030] In some respects, first and second cells share downlink time and frequency resources.

[0031] In some aspects, the method includes: transmitting information identifying the configuration of a cell-specific reference signal for a second cell.

[0032] In some respects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0033] In some aspects, the method includes transmitting information about at least one of a timing offset or a power offset between a downlink signal identifying a first cell and a reference signal identifying a second cell.

[0034] In some aspects, the method includes: transmitting information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0035] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0036] In some aspects, a method of wireless communication performed by a UE includes: transmitting to a base station measurements of a first cell for a first RAT; and receiving from the base station, at least in part, a configuration for rate matching of one or more reference signals for a second cell around a second RAT, based on the measurements of the first cell satisfying a threshold and the association between the first cell and the second cell.

[0037] In some respects, one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0038] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0039] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0040] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0041] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0042] In some respects, first and second cells share downlink time and frequency resources.

[0043] In some aspects, the method includes: receiving information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0044] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0045] In some aspects, the method includes: receiving PDSCH transmissions on a first cell using a configuration for rate matching.

[0046] In some aspects, a wireless communication method performed by a base station includes: receiving from a UE a measurement of a first cell for a first RAT; determining that the measurement for the first cell satisfies a threshold; and transmitting to the UE a configuration for rate matching of one or more reference signals around a second cell for a second RAT, based at least in part on the determination of the measurement satisfying threshold for the first cell and the association between the first cell and the second cell.

[0047] In some respects, one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0048] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0049] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0050] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0051] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0052] In some respects, first and second cells share downlink time and frequency resources.

[0053] In some aspects, the method includes: transmitting information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0054] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0055] In some aspects, a UE for wireless communication includes: a memory and one or more processors coupled to the memory, configured to: receive from a base station information identifying an association between a first cell of a first RAT and a second cell of a second RAT; perform measurements for the first cell; determine that the measurements for the first cell satisfy a threshold; and perform interference cancellation operations on a reference signal of the second cell, or deweighting operations on one or more resource elements where the reference signal interferes, based at least in part on the determination that the measurements for the first cell satisfy the threshold and the association between the first cell and the second cell.

[0056] In some respects, the reference signal is a reference signal that varies from cell to cell, a channel state information reference signal, a primary synchronization signal, or a secondary synchronization signal.

[0057] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0058] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0059] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0060] In some respects, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0061] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0062] In some respects, first and second cells share downlink time and frequency resources.

[0063] In some respects, the one or more processors are further configured to receive information identifying the configuration of a cell-specific reference signal for a second cell.

[0064] In some respects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0065] In some respects, interference cancellation operations are performed at least in part based on the configuration of reference signals that vary from cell to cell.

[0066] In some respects, the one or more processors are further configured to receive information on at least one of a timing offset or a power offset between a downlink signal identifying a first cell and a reference signal identifying a second cell.

[0067] In some respects, the one or more processors are further configured to: receive information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0068] In some respects, one or more processors used to perform interference cancellation operations are configured to: generate a copy of the interference signal; and perform subtraction of the copy of the interference signal from one or more resource elements.

[0069] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0070] In some respects, the one or more processors are further configured to receive PDSCH transmissions on a first cell, and interference cancellation operations are performed when the PDSCH transmissions are received.

[0071] In some aspects, a base station for wireless communication includes a memory and one or more processors coupled to the memory, configured to: generate information identifying an association between a first cell of a first RAT and a second cell of a second RAT; and transmit to a UE the information identifying the association between the first cell of the first RAT and the second cell of the second RAT.

[0072] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0073] In some respects, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0074] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0075] In some respects, first and second cells share downlink time and frequency resources.

[0076] In some respects, the one or more processors are further configured to transmit information identifying the configuration of a cell-specific reference signal for a second cell.

[0077] In some respects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0078] In some respects, the one or more processors are further configured to: transmit information about at least one of a timing offset or a power offset between a downlink signal identifying the first cell and a reference signal identifying the second cell.

[0079] In some respects, the one or more processors are further configured to: transmit information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0080] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0081] In some aspects, a UE for wireless communication includes: a memory and one or more processors coupled to the memory, configured to: transmit measurements of a first cell for a first RAT to a base station; and a configuration to receive, at least in part, one or more reference signals for rate matching of a second cell around a second RAT based on the measurements of the first cell satisfying a threshold and an association between the first cell and a second cell.

[0082] In some respects, one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0083] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0084] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0085] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0086] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0087] In some respects, first and second cells share downlink time and frequency resources.

[0088] In some respects, the one or more processors are further configured to: receive information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0089] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0090] In some respects, the one or more processors are further configured to receive PDSCH transmissions on the first cell using a configuration for rate matching.

[0091] In some aspects, a base station for wireless communication includes a memory and one or more processors coupled to the memory, configured to: receive from a UE measurements of a first cell for a first RAT; determine that the measurements for the first cell satisfy a threshold; and transmit to the UE, at least in part, a configuration for rate matching of one or more reference signals around a second cell for a second RAT, based on the determination of the measurement satisfying the threshold for the first cell and the association between the first cell and the second cell.

[0092] In some respects, one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0093] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0094] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0095] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0096] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0097] In some respects, first and second cells share downlink time and frequency resources.

[0098] In some respects, the one or more processors are further configured to: transmit information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0099] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0100] In some aspects, a non-transient computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receive from a base station information identifying an association between a first cell of a first RAT and a second cell of a second RAT; perform a measurement for the first cell; determine that the measurement for the first cell satisfies a threshold; and perform interference cancellation operations for a reference signal of the second cell, or perform deweighting operations for one or more resource elements where the reference signal interferes, based at least in part on the determination that the measurement for the first cell satisfies the threshold and the association between the first cell and the second cell.

[0101] In some respects, the reference signal is a reference signal that varies from cell to cell, a channel state information reference signal, a primary synchronization signal, or a secondary synchronization signal.

[0102] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0103] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0104] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0105] In some respects, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0106] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0107] In some respects, first and second cells share downlink time and frequency resources.

[0108] In some respects, the one or more instructions further enable the UE to: receive information identifying the configuration of a cell-specific reference signal for a second cell.

[0109] In some respects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0110] In some respects, interference cancellation operations are performed at least in part based on the configuration of reference signals that vary from cell to cell.

[0111] In some respects, the one or more instructions further enable the UE to: receive information on at least one of a timing offset or a power offset between a downlink signal identifying the first cell and a reference signal identifying the second cell.

[0112] In some respects, the one or more instructions further enable the UE to: receive information about one or more cells that identify a first RAT to which the UE intends to perform a measurement, the one or more cells including the first cell.

[0113] In some respects, one or more instructions that cause the UE to perform interference cancellation operations cause the UE to: generate a copy of the interference signal; and perform subtraction of the copy of the interference signal from one or more resource elements.

[0114] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0115] In some respects, the one or more instructions further enable the UE to: receive PDSCH transmissions on the first cell, and perform interference cancellation operations when the PDSCH transmissions are received.

[0116] In some aspects, a non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a base station, cause the base station to: generate information identifying an association between a first cell of a first RAT and a second cell of a second RAT; and transmit to a UE the information identifying the association between the first cell of the first RAT and the second cell of the second RAT.

[0117] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0118] In some respects, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0119] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0120] In some respects, first and second cells share downlink time and frequency resources.

[0121] In some respects, the one or more instructions further enable the base station to: transmit information identifying the configuration of a cell-specific reference signal for a second cell.

[0122] In some respects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0123] In some respects, the one or more instructions further cause the base station to: transmit information about at least one of a timing offset or a power offset between a downlink signal identifying the first cell and a reference signal identifying the second cell.

[0124] In some respects, the one or more instructions further cause the base station to: transmit information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0125] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0126] In some aspects, a non-transient computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: transmit measurements of a first cell for a first RAT to a base station; and configure itself to receive, at least in part, rate matching from the base station for one or more reference signals for a second cell around a second RAT based on the measurements of the first cell satisfying a threshold and the association between the first cell and the second cell.

[0127] In some respects, one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0128] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0129] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0130] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0131] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0132] In some respects, first and second cells share downlink time and frequency resources.

[0133] In some respects, the one or more instructions further enable the UE to: receive information about one or more cells that identify a first RAT to which the UE intends to perform a measurement, the one or more cells including the first cell.

[0134] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0135] In some respects, the one or more instructions further enable the UE to receive PDSCH transmissions on the first cell using a configuration for rate matching.

[0136] In some aspects, a non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a base station, cause the base station to: receive from a UE measurements of a first cell for a first RAT; determine that the measurements for the first cell satisfy a threshold; and transmit to the UE, at least in part, a configuration for rate matching of one or more reference signals around a second cell for a second RAT, based on the determination of the measurement satisfaction threshold for the first cell and the association between the first cell and a second cell.

[0137] In some respects, one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0138] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0139] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0140] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0141] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0142] In some respects, first and second cells share downlink time and frequency resources.

[0143] In some respects, the one or more instructions further cause the base station to: transmit information about one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0144] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0145] In some aspects, an apparatus for wireless communication includes: means for receiving from a base station information identifying an association between a first cell of a first RAT and a second cell of a second RAT; means for performing a measurement for the first cell; means for determining that the measurement for the first cell satisfies a threshold; and means for performing interference cancellation operations on a reference signal of the second cell or deweighting operations on one or more resource elements in which the reference signal interferes, based at least in part on the determination that the measurement for the first cell satisfies the threshold and the association between the first cell and the second cell.

[0146] In some respects, the reference signal is a reference signal that varies from cell to cell, a channel state information reference signal, a primary synchronization signal, or a secondary synchronization signal.

[0147] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0148] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0149] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0150] In some respects, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0151] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0152] In some respects, first and second cells share downlink time and frequency resources.

[0153] In some aspects, the device includes: means for receiving information identifying the configuration of a cell-specific reference signal for a second cell.

[0154] In some respects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0155] In some respects, interference cancellation operations are performed at least in part based on the configuration of reference signals that vary from cell to cell.

[0156] In some aspects, the device includes: means for receiving information on at least one of a timing offset or a power offset between a downlink signal identifying a first cell and a reference signal identifying a second cell.

[0157] In some aspects, the device includes: means for receiving information of one or more cells that identify a first RAT to which the device intends to perform a measurement, the one or more cells including the first cell.

[0158] In some aspects, the means for performing interference cancellation operations includes: means for generating a copy of the interference signal; and means for subtracting a copy of the interference signal from one or more resource elements.

[0159] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0160] In some aspects, the device includes: means for receiving PDSCH transmissions on a first cell, wherein interference cancellation operations are performed when the PDSCH transmissions are received.

[0161] In some aspects, an apparatus for wireless communication includes: means for generating information identifying an association between a first cell of a first RAT and a second cell of a second RAT; and means for transmitting to a UE the information identifying the association between the first cell of the first RAT and the second cell of the second RAT.

[0162] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0163] In some respects, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0164] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0165] In some respects, first and second cells share downlink time and frequency resources.

[0166] In some aspects, the device includes: means for transmitting information identifying the configuration of a cell-specific reference signal for a second cell.

[0167] In some respects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0168] In some aspects, the device includes: means for transmitting information on at least one of a timing offset or a power offset between a downlink signal identifying a first cell and a reference signal identifying a second cell.

[0169] In some aspects, the device includes: means for transmitting information of one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0170] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0171] In some aspects, an apparatus for wireless communication includes: means for transmitting measurements of a first cell for a first RAT to a base station; and means for receiving from the base station, at least in part, a configuration for rate matching of one or more reference signals around a second cell for a second RAT, based on the measurements of the first cell satisfying a threshold and the association between the first cell and the second cell.

[0172] In some respects, one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0173] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0174] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0175] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0176] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0177] In some respects, first and second cells share downlink time and frequency resources.

[0178] In some aspects, the device includes: means for receiving information of one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0179] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0180] In some aspects, the device includes means for receiving PDSCH transmissions on a first cell using a configuration for rate matching.

[0181] In some aspects, an apparatus for wireless communication includes: means for receiving from a UE measurements of a first cell for a first RAT; means for determining that the measurements for the first cell satisfy a threshold; and means for transmitting to the UE, at least in part, a configuration for rate matching of one or more reference signals around a second cell for a second RAT, based on the determination of the measurement satisfying the threshold for the first cell and the association between the first cell and the second cell.

[0182] In some respects, one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0183] In some respects, the first RAT is the new radio RAT and the second RAT is the evolved universal mobile telecommunications system terrestrial radio access RAT.

[0184] In some respects, measurements for the first cell are measurements of the synchronization signal block, tracking reference signal, or channel state information reference signal.

[0185] In some respects, thresholds are the received power of the reference signal, the received signal strength indicator value, the received quality of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0186] In some respects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0187] In some respects, first and second cells share downlink time and frequency resources.

[0188] In some aspects, the device includes: means for transmitting information of one or more cells that identify a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0189] In some respects, the first and second cells use OFDM-based waveforms and the same subcarrier spacing.

[0190] The aspects generally include, as substantially described herein with reference to the accompanying drawings and description, and as explained in the accompanying drawings and description, methods, apparatus, systems, computer program products, non-transient computer-readable media, user equipment, base stations, wireless communication equipment and / or processing systems.

[0191] The foregoing has broadly outlined the features and technical advantages of the examples according to this disclosure in an effort to facilitate a better understanding of the following detailed description. Additional features and advantages will be described thereafter. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for implementing the same purposes as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, in both their organization and manner of operation, and their associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each drawing is provided for illustrative and descriptive purposes and not for defining limitations on the claims. Brief description of the attached diagram

[0193] To gain a more detailed understanding of the features described above in this disclosure, reference can be made to various aspects of the above brief overview, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and should not be considered as limiting its scope, as other equivalent aspects are permissible in this description. Identical reference numerals in different drawings may identify the same or similar elements.

[0194] Figure 1 This is a diagram illustrating an example of a wireless network according to this disclosure.

[0195] Figure 2 This is a diagram illustrating an example of communication between a base station and a user equipment (UE) in a wireless network according to this disclosure.

[0196] Figure 3 This is a diagram illustrating an example of the frame structure in a wireless communication network according to this disclosure.

[0197] Figure 4 This is a diagram illustrating an example of a time slot format according to this disclosure.

[0198] Figure 5A and 5B This is a diagram illustrating an example of reference signal (CRS) rate matching that varies from cell to cell in dynamic spectrum sharing (DSS) according to this disclosure.

[0199] Figure 6 This is a diagram illustrating an example of reference signal interference cancellation according to this disclosure.

[0200] Figure 7 This is a diagram illustrating an example of rate matching associated with a reference signal according to this disclosure.

[0201] Figure 8-9 This is a diagram illustrating an example process associated with reference signal interference cancellation according to this disclosure.

[0202] Figure 10-11 This is a diagram illustrating an example process associated with reference signal rate matching according to this disclosure.

[0203] Figure 12 This is a block diagram of an example device for wireless communication according to the present disclosure.

[0204] Figure 13 This is a block diagram of an example device for wireless communication according to the present disclosure.

[0205] Detailed description

[0206] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be implemented in many different forms and should not be construed as being limited to any specific structure or function given throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Those skilled in the art will appreciate that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Furthermore, the scope of this disclosure is intended to cover such apparatuses or methods practiced using additional structures, functionalities, or structures and functionalities that complement or supplement the various aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be implemented by one or more elements of the claims.

[0207] Several aspects of a telecommunications system will now be described with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and explained in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0208] While the aspects herein may be described using terms commonly associated with 5G or New Radio (NR) Radio Access Technology (RAT), the aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or RATs after 5G (e.g., 6G).

[0209] Figure 1 This is a diagram illustrating an example of a wireless network 100 according to this disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., LTE) network, or may include elements thereof. The wireless network 100 may include one or more base stations 110 (shown as BS110a, BS110b, BS110c, and BS110d), one or more user equipment (UE) 120 (shown as UE 120a, UE120b, UE 120c, UE 120d, and UE 120e), and / or other network entities. Base station 110 is the entity that communicates with UE 120. Base station 110 (sometimes referred to as BS) may include, for example, an NR base station, an LTE base station, a B-node, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, and / or a transmit / receive point (TRP). Each base station 110 may provide communication coverage for a specific geographic area. In the 3rd Generation Partnership Project (3GPP), the term "cell" can refer to the coverage area of ​​base station 110 and / or the base station subsystem serving that coverage area, depending on the context in which the term is used.

[0210] Base station 110 provides communication coverage to macrocells, picocells, femtocells, and / or another type of cell. Macrocells can cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UE 120 with a service subscription. Picocells can cover a relatively small geographic area and allow unrestricted access by UE 120 with a service subscription. Femtocells can cover a relatively small geographic area (e.g., a residential area) and allow restricted access by UE 120 associated with that femtocell (e.g., UE 120 in a closed subscriber group (CSG)). Base station 110 for macrocells may be referred to as a macro base station. Base station 110 for picocells may be referred to as a pico base station. Base station 110 for femtocells may be referred to as a femtocell or a home base station. Figure 1 In the example shown, BS110a can be a macro base station for macro cell 102a, BS110b can be a pico base station for pico cell 102b, and BS110c can be a femto base station for femto cell 102c. A base station may support one or more (e.g., three) cells.

[0211] In some examples, the cell may not necessarily be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile base station 110 (e.g., a mobile base station). In some examples, base stations 110 may interconnect with each other and / or interconnect to one or more other base stations 110 or network nodes (not shown) in the wireless network 100 using any suitable transport network via various types of backhaul interfaces (such as direct physical connections or virtual networks).

[0212] Wireless network 100 may include one or more relay stations. A relay station is an entity capable of receiving data transmissions from an upstream station (e.g., base station 110 or UE 120) and transmitting those data transmissions to a downstream station (e.g., UE 120 or base station 110). A relay station may be a UE 120 capable of relaying transmissions for other UE 120s. Figure 1 In the example shown, BS110d (e.g., a relay base station) can communicate with BS110a (e.g., a macro base station) and UE 120d to facilitate communication between BS110a and UE 120d. The base station 110 for relay communication may be referred to as a relay station, relay base station, relay, etc.

[0213] Wireless network 100 can be a heterogeneous network comprising different types of base stations 110 (such as macro base stations, pico base stations, femto base stations, or relay base stations, etc.). These different types of base stations 110 may have different transmit power levels, different coverage areas, and / or different effects on interference in wireless network 100. For example, macro base stations may have high transmit power levels (e.g., 5 to 40 watts), while pico base stations, femto base stations, and relay base stations may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0214] Network controller 130 can be coupled to or communicate with a group of base stations 110 and can provide coordination and control over these base stations 110. Network controller 130 can communicate with base stations 110 via backhaul communication links. Base stations 110 can communicate with each other directly or indirectly via wireless or wired backhaul communication links.

[0215] Each UE 120 may be distributed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, access terminals, terminals, mobile stations, and / or subscriber units. UE 120 may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, and / or any other suitable device configured to communicate via wireless or wired media.

[0216] Some UEs 120 may be considered machine-type communication (MTC) UEs, or evolved or enhanced machine-type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which can communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 may be considered client equipment. UE 120 may be included within a housing that houses the components of UE 120, such as processor components and / or memory components. In some examples, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0217] Generally, any number of wireless networks 100 can be deployed in a given geographical area. Each wireless network 100 can support a specific RAT and can operate on one or more frequencies. A RAT may be referred to as a radio technology, air interface, etc. A frequency may be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0218] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary). For example, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as performed by base station 110.

[0219] Devices in Wireless Network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., according to frequency or wavelength. For example, each device in Wireless Network 100 can communicate using one or more operating frequency bands. In 5G NR, two initial operating frequency bands have been designated as frequency ranges FR1 (410MHz–7.125GHz) and FR2 (24.25GHz–52.6GHz). It should be understood that although a portion of FR1 is greater than 6GHz, FR1 is generally (interchangeably) referred to as the “sub-6GHz” band in various documents and articles. Similar naming issues sometimes arise regarding FR2; although different from the Very High Frequency (EHF) band (30GHz–300GHz) designated as the “millimeter wave” band by the International Telecommunication Union (ITU), FR2 is generally (interchangeably) referred to as the “millimeter wave” band in various documents and articles.

[0220] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR studies have designated the operating bands of these IF bands as the frequency range designation FR3 (7.125 GHz – 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, thus effectively extending the features of FR1 and / or FR2 into the IF band. Additionally, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating frequency bands have been designated as the frequency range designations FR4a or FR4-1 (52.6 GHz – 71 GHz), FR4 (52.6 GHz – 114.25 GHz), and FR5 (114.25 GHz – 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0221] Considering the examples above, unless otherwise stated, it should be understood that, as used herein, the terms "sub-6GHz," etc., can broadly refer to frequencies less than 6GHz, within FR1, or that may include intermediate frequency band frequencies. Furthermore, unless otherwise stated, it should be understood that, as used herein, the terms "millimeter wave," etc., can broadly refer to frequencies that may include intermediate frequency band frequencies, within FR2, FR4, FR4-a, or FR4-1 and / or FR5, or within the EHF band. It is conceivable that the frequencies included in these operating frequency bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0222] As indicated above, Figure 1 This is provided as an example. Other examples may differ from the one provided. Figure 1 The example described.

[0223] Figure 2 This is a diagram illustrating an example 200 of communication between a base station 110 and a UE 120 in a wireless network 100 according to this disclosure. The base station 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1).

[0224] At base station 110, transmit processor 220 can receive data from data source 212 intended for UE 120 (or a group of UEs 120). Transmit processor 220 can select one or more modulation and coding schemes (MCS) for UE 120, at least in part, based on one or more Channel Quality Indicators (CQIs) received from UE 120. Base station 110 can process (e.g., encode and modulate) the data for UE 120, at least in part, based on the selected MCS(s) for UE 120, and can provide data symbols to UE 120. Transmit processor 220 can process system information (e.g., semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or higher-layer signaling), and provide overhead symbols and control symbols. Transmit processor 220 can generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS) or demodulation reference signal (DMRS)) and synchronization signals (e.g., a primary synchronization signal (PSS) or secondary synchronization signal (SSS)). Transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and can provide a set of output symbol streams (e.g., T output symbol streams) to T modulators (MODs) 232a to 232t. Each modulator 232 can process its respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a to 232t can be transmitted via corresponding antenna sets 234 (e.g., T antennas), shown as antennas 234a to 234t.

[0225] At UE 120, an antenna set 252 (shown as antennas 252a to 252r) can receive downlink signals from base station 110 and / or other base stations 110 and can provide the received signal set (e.g., R received signals) to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM) to obtain received symbols. MIMO detector 256 can obtain the received symbols from all R demodulators 254a to 254r, perform MIMO detection on these received symbols where applicable, and provide detected symbols. Receiver processor 258 can process (e.g., demodulate and decode) these detected symbols, can provide decoded data for UE 120 to data sink 260, and can provide decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine parameters such as Reference Signal Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Signal Received Quality (RSRQ), and / or CQI, etc. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0226] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in the core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0227] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include one or more antenna panels, one or more antenna groups, one or more antenna element assemblies, and / or one or more antenna arrays, etc., or may be included therein. Antenna panels, antenna groups, antenna element assemblies, and / or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), coplanar antenna element assemblies, non-coplanar antenna element assemblies, and / or coupled to one or more transmit and / or receive components (such as...) Figure 2 One or more antenna elements (one or more components).

[0228] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., reports including RSRP, RSSI, RSRQ, and / or CQI). Transmit processor 264 can generate reference symbols for one or more reference signals. Symbols from transmit processor 264 may be pre-encoded by TX MIMO processor 266 where applicable, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some examples, modulators and demodulators (e.g., MOD / DEMOD 254) of UE 120 may be included in the modem of UE 120. In some examples, UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receiver processors 258, transmitter processors 264, and / or TX MIMO processors 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., references...). Figure 6-13 ).

[0229] At base station 110, uplink signals from UE 120 and / or other UEs may be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 where applicable, and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 may provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and may communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communication. In some examples, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in the modem of base station 110. In some examples, base station 110 includes a transceiver. The transceiver may include (such as) antenna 234, modulator and / or demodulator 232, MIMO detector 236, receiver processor 238, transmitter processor 220, and / or any combination of TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., as referenced). Figure 6-13 (As described).

[0230] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component may perform one or more techniques associated with reference signal interference cancellation or rate matching, as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component may execute or direct, for example Figure 8 The process 800 Figure 9 The process 900 Figure 10 Process 1000 Figure 11 The operation of process 1100 and / or other processes as described herein. Memory 242 and memory 282 may store data and program code for base station 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, when executed by one or more processors of base station 110 and / or UE 120 (e.g., direct execution, or execution after compilation, transformation, and / or interpretation), the one or more processors, UE 120, and / or base station 110 may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 8 The process 800 Figure 9 The process 900 Figure 10 Process 1000 Figure 11 The operation of process 1100, and / or other processes described herein. In some examples, the execution instructions may include run instructions, transform instructions, compile instructions, and / or interpret instructions, etc.

[0231] In some aspects, the UE includes: means for receiving from a base station information identifying an association between a first cell of a first RAT and a second cell of a second RAT; means for performing measurements for the first cell; means for determining that the measurements for the first cell satisfy a threshold; and / or means for performing interference cancellation operations on reference signals for the second cell, or deweighting operations on one or more resource elements where the reference signals interfere, based at least in part on the determination of the measurement satisfaction threshold for the first cell and the association between the first cell and the second cell. Additionally or alternatively, the UE may include: means for transmitting measurements of the first cell of the first RAT to the base station; and / or means for receiving from the base station, at least in part on the measurement satisfaction threshold for the first cell and the association between the first cell and the second cell, a configuration for rate matching of one or more reference signals around the second cell of the second RAT. The means for enabling the UE to perform the operations described herein may include one or more of, for example, antenna 252, demodulator 254, MIMO detector 256, receiver processor 258, transmitter processor 264, TXMIMO processor 266, modulator 254, controller / processor 280, or memory 282.

[0232] In some aspects, the base station includes: means for generating information identifying an association between a first cell of a first RAT and a second cell of a second RAT; and / or means for transmitting to the UE the information identifying the association between the first cell of the first RAT and the second cell of the second RAT. Additionally or alternatively, the base station includes: means for receiving from the UE measurements of the first cell of the first RAT; means for determining that the measurements of the first cell satisfy a threshold; and / or means for transmitting to the UE, at least in part, a configuration for rate matching of one or more reference signals around the second cell of the second RAT, based on the determination of the measurement threshold for the first cell and the association between the first cell and the second cell. Means for the base station to perform the operations described herein may include, for example, one or more of a transmit processor 220, a TX MIMO processor 230, a modulator 232, an antenna 234, a demodulator 232, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246.

[0233] although Figure 2The boxes in the diagram are interpreted as different components, but the functions described above with respect to these boxes can be implemented using a single hardware component, software component, or combination of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by controller / processor 280 or under the control of controller / processor 280.

[0234] As indicated above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 The example described.

[0235] Figure 3 This is a diagram illustrating example 300 of the frame structure in a wireless communication network according to the present disclosure. Figure 3 The frame structure shown is used for Frequency Division Duplex (FDD) in telecommunications systems such as Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) (i.e., LTE) or NR. The transmission timeline for each of the downlink and uplink can be divided into units of radio frames (sometimes referred to as frames). Each radio frame may have a predetermined duration (e.g., 10 milliseconds (ms)) and may be divided into a set of Z (Z≥1) subframes (e.g., with indices 0 to Z-1). Each subframe may have a predetermined duration (e.g., 1 ms) and may include a set of time slots (e.g., in...). Figure 3 The diagram shows 2m time slots per subframe, where m is an index for the parameter design used for transmission, such as 0, 1, 2, 3, 4, or other numbers. Each time slot may include a set of L symbol periods. For example, each time slot may include fourteen symbol periods (e.g., as shown in the diagram). Figure 3 (as shown in the diagram), seven symbol periods, or another number of symbol periods. In the case where a subframe includes two time slots (e.g., when m=1), the subframe may include 2L symbol periods, where the 2L symbol periods in each subframe can be assigned indices from 0 to 2L–1. In some examples, the scheduling unit for FDD can be frame-based, subframe-based, time slot-based, mini-time slot-based, or symbol-based.

[0236] In some examples, in telecommunications systems using LTE RAT, a cell-specific reference signal (CRS) may be present in subframes used for downlink. For instance, the CRS may be present in all downlink subframes, or in the downlink pilot slot (DwPTS) of a specific subframe, unless the subframe is configured for a multicast broadcast single-frequency network (MBSFN).

[0237] As indicated above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0238] Figure 4 This is a diagram illustrating Example 400 of the timeslot format according to this disclosure. For example... Figure 4 As shown, time-frequency resources in a radio access network can be divided into resource blocks, such as a single resource block (RB) 405. This RB 405 is sometimes referred to as a physical resource block (PRB). RB 405 includes a set of subcarriers (e.g., 12 subcarriers) and a set of symbols (e.g., 14 symbols) that can be scheduled by base station 110 as a unit. In some examples, RB 405 may include a set of subcarriers in a single timeslot. As shown, a single time-frequency resource included in this RB 405 may be referred to as a resource element (RE) 410. RE 410 may include a single subcarrier (e.g., in frequency) and a single symbol (e.g., in time). The symbol may be referred to as an orthogonal frequency division multiplexing (OFDM) symbol. RE 410 may be used to transmit a modulated symbol, which may be a real value or a complex value.

[0239] In some telecommunications systems (e.g., NR), the RB 405 can span 12 subcarriers (with subcarrier spacing of, for example, 15 kHz, 30 kHz, 60 kHz, or 120 kHz) within a 0.1 millisecond (ms) duration. A radio frame can include 40 time slots and can have a length of 10 ms. Therefore, each time slot can have a length of 0.25 ms. However, the time slot length can vary depending on the set of parameters used for communication (e.g., subcarrier spacing, and / or cyclic prefix format). Time slots can be configured with a link direction for transmission (e.g., downlink or uplink). In some examples, the link direction for the time slots can be dynamically configured. In some examples, in telecommunications systems using LTE RAT, the RE 410 can carry a CRS.

[0240] As indicated above, Figure 4 This is provided as an example. Other examples may differ from the one provided. Figure 4 The example described.

[0241] Figure 5A This is a diagram illustrating Example 500 of CRS rate matching according to the Dynamic Spectrum Sharing (DSS) of this disclosure. DSS enables a first RAT to share transmission resources with a second RAT. For example... Figure 5A As shown, the LTE system and the NR system can dynamically share spectrum within radio frame 505. Radio frame 505 may include several subframes 510. Figure 5A It explains how LTE and NR systems can dynamically share downlink time and frequency resources within a specific subframe 515.

[0242] like Figure 5AAs shown, subframe 515 includes multiple RBs 520, each RB including multiple REs of different types (e.g., REs carrying different types of signals or channels), as illustrated by resource grid 525. Among these, the REs include LTE cell-specific reference signal (CRS) REs 530 and NR physical downlink shared channels (PDSCH) with LTE CRS rate-matched REs 535.

[0243] LTE CRS REs 530 are used to carry CRS. CRS in LTE is used for cell search and initial acquisition, downlink channel quality measurement, and / or downlink channel estimation for coherent demodulation / detection at the UE. Because LTE CRS REs 530 include CRS for LTE, when time-frequency resources are shared in the DSS, LTE CRS REs 530 cannot be used (on the NR PDSCH) to transmit data for NR. Therefore, when the base station schedules NR data in RB 520, the base station performs rate matching to suppress the transmission of NR data (on the NR PDSCH) in LTE CRS REs 530 that include LTE CRS, and the UE discards LTE CRS REs 530 when decoding NR data (e.g., by not using information transmitted in LTE CRS REs 530 when decoding NR data, by ignoring information transmitted in these REs 530 when decoding NR data, by discarding information transmitted in these REs 530 when decoding NR data, etc.). Instead, NR data transmitted on the NR PDSCH is transmitted in NR PDSCH RE 535 with LTE CRS rate matching. In this way, DSS operation is achieved through NR PDSCH rate matching around LTE CRS in the same serving cell.

[0244] like Figure 5AAs shown, in a shared DSS carrier, the NR PDSCH DMRS (e.g., of type A PDSCH) can be shifted by one symbol. For example, in the absence of LTE / NR coexistence combined with DSS, the NR DMRS mode may include the DMRS in the fourth symbol of the time slot (e.g., symbol index 3) and the twelfth symbol of the time slot (e.g., symbol index 11). However, in a shared DSS carrier, the LTE CRS and NR DMRS (e.g., according to the NR DMRS mode) may overlap in symbols (e.g., in the twelfth symbol of the time slot). To avoid the overlap of the LTE CRS and NR DMRS, the NR DMRS can be shifted by one symbol (e.g., shifted to the thirteenth symbol of the time slot, or symbol index 12). That is, the UE can be configured for DMRS shifting. Once DMRS shifting is configured for use with the UE, DMRS can be shifted regardless of whether a conflict with LTE CRS will occur (e.g., DMRS can be shifted even if the PDSCH RB is outside the LTE CRS bandwidth and / or even in the LTE MBSFN subframe).

[0245] If the UE indicates (e.g., using the additionalDMRS-DL-ALT parameter) to support the alternative additional DMRS positioning for coexistence with LTE CRS; if the UE is configured (e.g., via Radio Resource Control (RRC)) to have higher-layer parameters indicating the mode for rate matching around LTE CRS (e.g., the lte-CRS-ToMatchAround parameter or the additional LTE-CRS-ToMatchAroundList parameter); if three control symbols are used in the NR PDSCH; and if the UE is configured (e.g., via RRC) to have higher-layer parameters indicating support for additional DMRS positioning in symbol index 12 (e.g., the dmrs-AdditionalPosition parameter is set to "pos1"), then NR DMRS may be shifted for the UE.

[0246] As indicated above, Figure 5A This is provided as an example. Other examples may differ from the one provided. Figure 5A The example described.

[0247] Figure 5B This is a diagram illustrating example 550 of CRS rate matching in the DSS according to this disclosure. (As described above...) Figure 5AAs described, subframe 515 includes multiple RBs, each RB including multiple REs of different types (e.g., REs carrying different types of signals or channels), as illustrated in resource grid 555. Among these REs are LTE CRS RE 560 and NR PDSCH with LTE CRS rate-matched RE 565, as described above.

[0248] like Figure 5B As shown, the RB may include multiple LTE CRS modes (shown as LTE CRS mode 1 and LTE CRS mode 2). That is, the RB may include LTE CRS for different cells' CRSs. Therefore, in the DSS, when the base station schedules NR data in the RB, the base station performs rate matching (e.g., within one NR carrier) to suppress the transmission of NR data (on the NR PDSCH) for multiple LTE CRS modes in LTE CRS RE 560, and the NR PDSCH is instead transmitted in NR PDSCH RE 565 with LTE CRS rate matching, as described above. In some examples, in scenarios involving multiple TRPs (mTRPs), multiple (e.g., up to two) LTE CRS modes may exist in the NR channel. In another example, multiple LTE CRS modes may exist in an NR channel spanning multiple LTE channels (e.g., a wider-band NR channel).

[0249] Accordingly, NR PDSCH rate matching can be performed for multiple LTE CRSs within an NR component carrier. For example, NR PDSCH rate matching can use rate matching modes to perform rate matching around multiple LTE CRS modes. In some examples, the maximum number (e.g., total number) of rate matching modes within an NR carrier is six. In some examples, the maximum number of non-overlapping rate matching modes within an NR carrier is three. In some examples, the maximum number of overlapping rate matching modes within a portion of an NR carrier overlapping with an LTE carrier is two.

[0250] The base station may (e.g., via RRC signaling) transmit to the UE a configuration indicating the rate matching mode for the LTE CRS (e.g., an indication of the rate matching mode to be used for rate matching around the LTE CRS). For example, the rate matching mode may be configured in the RateMatchPatternLTE-CRS information element of the configuration, which may indicate the bandwidth of the LTE carrier (e.g., in the carrierBandwidthDL parameter), the center of the LTE carrier (e.g., in the carrierFreqDL parameter), the LTE MBSFN subframe configuration (e.g., in the mbsfn-SubframeConfigList parameter), the number of LTE CRS antenna ports to be rate matched around (e.g., in the nrofCRS-Ports parameter), and / or the shift value (v-shift) in the LTE used for rate matching around the LTE CRS (e.g., in the v-shift parameter).

[0251] To configure a UE with rate matching mode, the base station must determine when and / or for which LTE CRS rate matching to be performed. In some examples, the UE may perform LTE CRS measurements and report these measurements to the base station (e.g., in a background manner) so that the base station 110 can determine when and / or for which LTE CRS rate matching to be performed. However, LTE CRS measurement and reporting can be burdensome for the UE and consume excessive computational resources. Furthermore, LTE CRS measurement reporting can consume excessive network resources and increase signaling overhead.

[0252] Furthermore, in the DSS, LTE CRS interference from one or more neighboring cells can adversely affect NR downlink performance. For example, LTE CRS interference can significantly degrade NR downlink throughput. In some examples, the UE can eliminate LTE CRS interference for NR PDSCH reception. For example, the UE can identify strong LTE CRS interference from neighboring cells (e.g., the LTE CRS signal strength meets a threshold). Based at least in part on identifying strong LTE CRS interference, the UE can determine to eliminate LTE CRS interference. To eliminate LTE CRS interference, the UE can estimate propagation channel coefficients from neighboring cells; generate an interference copy based at least in part on the estimated propagation channel coefficients; and subtract the interference copy from the NR PDSCH received from the UE's serving cell.

[0253] Therefore, in order to perform interference cancellation, the UE can perform LTE CRS measurements (e.g., in a background manner) to identify strong LTE CRS interference. However, as mentioned above, LTE CRS measurement can be burdensome for the UE and consume excessive computing resources.

[0254] As indicated above, Figure 5B This is provided as an example. Other examples may differ from the one provided. Figure 5B The example described.

[0255] Figure 6 This is a diagram illustrating Example 600 related to reference signal interference cancellation according to this disclosure. (See diagram for example.) Figure 6 As shown, Example 600 includes communication between base station 110 and UE 120. In some aspects, base station 110 and UE 120 may be included in a wireless network (such as wireless network 100). Base station 110 and UE 120 may communicate via a wireless access link (which may include an uplink and a downlink).

[0256] In some aspects, base station 110 can operate in DSS mode, as described above. For example, base station 110 can implement a first cell for a first RAT (e.g., NR RAT) and a second cell for a second RAT (e.g., LTE or E-UTRA RAT). In some aspects, another base station 110 (e.g., a neighboring base station) can operate in DSS mode, and this other base station 110 can implement a first cell for the first RAT and a second cell for the second RAT. The first cell for the first RAT and the second cell for the second RAT can be implemented on the same frequency band, the same carrier, etc. In other words, the first cell and the second cell can share downlink time and frequency resources. Therefore, base station 110 can transmit downlink signals of the first RAT (e.g., for cellular use) and downlink signals of the second RAT (e.g., for cellular use) in a time-synchronized and co-located (or quasi-co-located) manner (e.g., for cellular use) manner. These signals include, for example, NR downlink signals such as Synchronization Signal Block (SSB), Tracking Reference Signal (TRS), Channel State Information Reference Signal (CSI-RS), etc.). In some aspects, the first and second cellular cells can use OFDM-based waveforms and can use the same subcarrier spacing (e.g., 15 kHz).

[0257] As shown by reference numeral 605, base station 110 may transmit, and UE 120 may receive, information (e.g., measurement configuration) identifying one or more cells of a first RAT (e.g., NR) for which UE 120 intends to perform measurements. For example, UE 120 may receive a configuration identifying a list of cells (e.g., a list of neighboring cells) used for measurements (e.g., NR Radio Resource Management (RRM) measurements, such as SSB measurements, TRS measurements, and / or CSI-RS measurements). The one or more cells of the first RAT for which UE 120 intends to measure may include the first cell. In some aspects, this information may identify one or more measurements that UE 120 intends to perform for one or more cells of the first RAT.

[0258] As indicated by reference numeral 610, base station 110 can transmit and UE 120 can receive information (e.g., one or more configurations) identifying the corresponding reference signal configuration (e.g., identifying time and frequency resources for the reference signal) for one or more cells of a second RAT (e.g., LTE). For example, this information may identify the corresponding CRS configuration for one or more cells of the second RAT (e.g., identifying the CRS mode, as described above). In some aspects, this information may identify the configuration of the reference signal (e.g., CRS) for the second cell. One or more cells of the second RAT (e.g., the UE 120 configured for receiving the reference signal) may be associated with one or more cells of the first RAT (e.g., the UE 120 to which it performs measurements), as described below. In some aspects, the CRS configuration may identify CRS configuration information, such as cell identifiers (e.g., for the cell associated with the CRS configuration), v-shift parameters, carrier bandwidth, and / or the number of CRS antenna ports, as examples, as described above.

[0259] As indicated by reference numeral 615, base station 110 can transmit, and UE 120 can receive, information identifying associations between one or more cells of a first RAT and one or more cells of a second RAT. In some aspects, this information may identify an association between a first cell of the first RAT (e.g., an NR cell) and a second cell of the second RAT (e.g., an LTE cell). In some aspects, base station 110 may generate information identifying associations between one or more cells of the first RAT and one or more cells of the second RAT. For example, base station 110 may generate the information at least in part based on determining the associations between one or more cells of the first RAT and one or more cells of the second RAT, as described below.

[0260] In some aspects, the association between cells of the first RAT and cells of the second RAT can be a one-to-one association. Here, the association may indicate that a first downlink signal (e.g., an NR downlink signal) of the first RAT cell is associated with a second downlink signal (e.g., an LTE downlink signal) of the second RAT cell. In some aspects, the association between cells of the first RAT and cells of the second RAT may associate one or more beams of the first RAT cell with cells of the second RAT. For example, this association may associate an LTE cell with one or more beams (e.g., NR beams) of an NR cell. One or more beams may be associated with one or more NR downlink signals (e.g., one or more SSBs, one or more TRSs, and / or one or more CSI-RSs, etc.).

[0261] If the base stations transmit downlink signals of the first RAT (e.g., NR downlink signals, such as SSB, TRS, and / or CSI-RS, etc.) and the second RAT downlink signals (e.g., LTE downlink signals, such as CRS, CSI-RS, PSS, and / or SSS) in a time-synchronized manner (but not necessarily simultaneously), in a co-located manner (e.g., from the same TRP, from the same antenna panel, etc.) and / or using the same precoding, then the cell (or beam) of the first RAT (e.g., NR cell) can be associated with the cell of the second RAT (e.g., LTE cell). In other words, the association between the first cell (or beam) of the first RAT and the second cell of the second RAT can indicate at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located (e.g., implemented by the same base station) or quasi-co-located (for example, the propagation channels from the first cell and the second cell to the UE 120 have similar statistical characteristics, such as average delay, delay spread, Doppler spread, and / or beam direction); or the first cell and the second cell use the same precoding. For example, from the perspective of the UE 120, the association between the first cell (or beam) of the first RAT and the second cell of the second RAT indicates at least one of the following: the first cell and the second cell are time-synchronized; or the first cell and the second cell are quasi-co-located.

[0262] As shown by reference numeral 620, base station 110 can transmit and UE 120 can receive information identifying the relationship between a first downlink signal (e.g., NR SSB, TRS, and / or CSI-RS) of a first RAT and a second downlink signal (e.g., LTE CRS, CSI-RS, PSS, and / or SSS) of a second RAT. In some aspects, this information may identify a corresponding relationship for each association (e.g., an association between cells(of) the first RAT and cells(of) the second RAT). In some aspects, this information may identify a single relationship applicable to each association. In some aspects, the information identifying the relationship between the first downlink signal and the second downlink signal may include timing offsets (e.g., system frame number (SFN) offsets, subframe offsets, etc.) and / or power offsets (e.g., power differences between the first downlink signal and the second downlink signal), etc.

[0263] In some aspects, information identifying one or more cells of a first RAT for which UE 120 will perform measurements (as described above in conjunction with reference numeral 605), information identifying reference signal configurations for one or more cells of a second RAT (as described above in conjunction with reference numeral 610), information identifying the association between one or more cells of the first RAT and one or more cells of the second RAT (as described above in conjunction with reference numeral 615), and information identifying the relationship between a first downlink signal and a second downlink signal (as described above in conjunction with reference numeral 620) may be included in the same message (e.g., an RRC message) destined for UE 120, or may be included in separate messages destined for UE 120 (e.g., in two or more messages). For example, information identifying the association between one or more cells of the first RAT and one or more cells of the second RAT, and information identifying the relationship between the first downlink signal and the second downlink signal, may be included in the same message.

[0264] As indicated by reference numeral 625, UE 120 can perform measurements for one or more cells of a first RAT (e.g., NR). For example, UE 120 can perform measurements according to a measurement configuration (e.g., as described above in conjunction with reference numeral 605). In some aspects, UE 120 can perform measurements for a first cell of a first RAT. In some aspects, UE 120 can use SSB, TRS, and / or CSI-RS to perform measurements for one or more cells of a first RAT (e.g., NR measurements). In some aspects, the measurements can be RSSI measurements, RSRP measurements, RSRQ measurements, and / or signal-to-interference-plus-noise ratio (SINR) measurements, etc. Additionally or alternatively, the measurement may be a path loss estimate between UE 120 and base station 110 (or other base station 110) in conjunction with a first RAT (e.g., a first cell), an MCS index value in conjunction with the first RAT (e.g., a first cell) for PDSCH reception, a number of transport layers (e.g., MIMO layers) in conjunction with the first RAT (e.g., a first cell) for PDSCH reception, and / or an aggregation level in conjunction with the first RAT (e.g., a first cell) for detecting the physical downlink control channel (PDCCH). As indicated by reference numeral 630, UE 120 may transmit and base station 110 may receive a report of the measurement.

[0265] As indicated by reference numeral 635, UE 120 may determine that measurements (e.g., RSSI, RSRP, RSRQ, and / or SINR) of the first cell of the first RAT satisfy (e.g., exceed) thresholds (e.g., threshold RSSI value, threshold RSRP value, threshold RSRQ value, threshold SINR value, threshold path loss estimate, threshold MCS exponent value, threshold number of transport layers, and / or threshold aggregation level). Measurements for a cell that satisfy the thresholds may indicate strong downlink signal reception at UE 120 for that cell. As indicated by reference numeral 640, base station 110 may transmit and UE 120 may receive PDSCH transmissions (e.g., NR PDSCH) for the first RAT.

[0266] As indicated by reference numeral 645, UE 120 may perform interference cancellation operations on reference signals (e.g., CRS, CSI-RS, PSS, and / or SSS) for a second cell of a second RAT (e.g., LTE), based at least in part on determining that a measurement satisfaction threshold is met for a first cell of a first RAT (e.g., NR). This is because the second cell is associated with the first cell based on information identifying the association between one or more cells of the first RAT and one or more cells of the second RAT. In other words, UE 120 may perform interference cancellation operations on reference signals (e.g., CRS, CSI-RS, PSS, and / or SSS) for a second cell of a second RAT, based at least in part on determining that a measurement satisfaction threshold is met for a first cell of a first RAT and at least in part on the association between the first cell and the second cell.

[0267] In this manner, UE 120 can use measurements of the first cell (e.g., measurements that UE 120 typically collects regardless of whether UE 120 determines whether to perform interference cancellation) to infer the interference level from the second cell (e.g., based at least in part on the association between the first and second cells), and UE 120 can perform interference cancellation operations at least in part based on the high level of interference. For example, if the measured power (e.g., RSRP) of the first cell is high (e.g., exceeding a threshold), UE 120 can infer that the interference from the second cell is also high (e.g., based at least in part on the association between the first and second cells). Accordingly, when a PDSCH transmission is received, UE 120 can perform interference cancellation operations for the reference signal (e.g., CRS) of the second cell (e.g., UE 120 can activate the interference cancellation operation). Therefore, UE 120 can suppress the execution of measurements of the reference signal (e.g., CRS) of the second cell, thereby saving processing resources of UE 120.

[0268] In some aspects, in order to perform interference cancellation operations on a reference signal for a second cell, UE 120 may perform propagation channel coefficient estimation for the second cell (e.g., for a cell that uses DSS to implement both the first and second cells). UE 120 may generate an interference copy of the reference signal (e.g., a copy of the interfering signal) based at least in part on the estimation of the propagation channel coefficients. UE 120 may subtract the generated interference copy from the PDSCH transmission received by UE 120. In some aspects, UE 120 may perform interference cancellation operations based at least in part on information identifying the configuration of the reference signal (e.g., CRS) for the second cell. For example, UE 120 may perform interference cancellation operations in an RE including the reference signal (e.g., CRS) (e.g., in an RE where the reference signal interferes) according to the reference signal configuration.

[0269] In some respects, in addition to performing interference cancellation operations or alternatively, UE 120 may perform deweighting (or zeroing) operations relative to REs that do not include the reference signal in one or more received REs that include the reference signal of the second cell (e.g., in REs where the reference signal interferes). For example, UE 120 may perform deweighting (or zeroing) with respect to the weighting used for channel equalization and / or the log-likelihood ratio (LLR) values ​​for channel estimates of REs that include the reference signal. UE 120 may perform deweighting (or zeroing) based at least in part on determining that measurements for the first cell of the first RAT satisfy a threshold.

[0270] In this way, in the DSS carrier, UE 120 can receive PDSCH transmissions (e.g., NR PDSCH data) for the first RAT with reduced interference caused by the downlink reference signal (e.g., CRS) for the second RAT. Accordingly, the performance of PDSCH transmission can be improved.

[0271] As indicated above, Figure 6 This is provided as an example. Other examples may differ from the one provided. Figure 6 The example described.

[0272] Figure 7 This is a diagram illustrating example 700 related to reference signal rate matching according to this disclosure. (See diagram for example.) Figure 7 As shown, Example 700 includes communication between base station 110 and UE 120, as described above. Figure 6As described. In some aspects, base station 110 can operate in DSS mode. For example, base station 110 can realize a first cell for a first RAT (e.g., NR RAT) and a second cell for a second RAT (e.g., LTE or E-UTRA RAT), as described above. Figure 6 As described above. In some aspects, another base station 110 (e.g., a neighboring base station) can operate in DSS mode, and this other base station 110 can realize the first cell of the first RAT and the second cell of the second RAT, as described above. Figure 6 As described.

[0273] As shown by reference numeral 705 in the attached drawing, base station 110 can be configured in a similar way to the above combination. Figure 6 The described method transmits and UE 120 can receive information (e.g., measurement configuration) identifying one or more cells (e.g., including the first cell) of a first RAT (e.g., NR) to which UE 120 will perform measurements (e.g., NR RRM measurements). In some aspects, this information may identify one or more measurements (e.g., RSSI measurement, RSRP measurement, RSRQ measurement, and / or SINR measurement, etc.) that UE 120 will perform for one or more cells of the first RAT. As indicated by reference numeral 710, UE 120 can transmit and base station 110 can receive measurement reports.

[0274] As indicated by reference numeral 715, base station 110 can determine that measurements (e.g., RSSI, RSRP, RSRQ, SINR, path loss estimate, MCS index, number of transport layers, and / or clustering level) for the first cell of the first RAT satisfy (e.g., exceed) thresholds (e.g., threshold RSSI value, threshold RSRP value, threshold RSRQ value, threshold SINR value, threshold path loss estimate, threshold MCS index value, threshold number of transport layers, and / or threshold clustering level). In some aspects, base station 110 can be configured in conjunction with the above. Figure 6 The described method stores information identifying the association between one or more cells of a first RAT and one or more cells of a second RAT. In some aspects, this information may identify the association between a first cell of the first RAT (e.g., an NR cell) and a second cell of the second RAT (e.g., an LTE cell). In some aspects, base station 110 may be configured in conjunction with the above. Figure 6A similar method is described to determine the association between one or more cells of a first RAT and one or more cells of a second RAT. Based at least in part on the association between one or more cells of the first RAT and one or more cells of the second RAT, base station 110 may determine that a first cell (e.g., associated with a measurement that meets a threshold) is associated with a second cell.

[0275] As indicated by reference numeral 720, base station 110 may transmit, and UE 120 may receive, a configuration for rate matching around one or more reference signals (e.g., CRS, CSI-RS, PSS, and / or SSS) of a second cell for a second RAT (e.g., LTE), based at least in part on determining a measurement satisfaction threshold for a first cell for a first RAT (e.g., NR). In other words, base station 110 may transmit a rate matching configuration for one or more reference signals (e.g., CRS) of a second cell for a second RAT based at least in part on determining a measurement satisfaction threshold for a first cell for a first RAT and at least in part on the association between the first and second cells. As described above, the rate matching configuration may identify a rate matching mode to be used by UE 120 for rate matching around REs including reference signals (e.g., CRS, CSI-RS, PSS, and / or SSS) of the second RAT when receiving PDSCH transmissions of the first RAT.

[0276] In this manner, base station 110 can use measurements of the first cell (e.g., measurements that UE 120 can typically report, regardless of whether base station 110 determines whether rate matching is configured for UE 120) to infer the interference level from the second cell (e.g., based at least in part on the association between the first and second cells), and base station 110 can transmit rate matching configuration at least in part based on the high level of interference. For example, if the measured power (e.g., RSRP) of the first cell is high (e.g., exceeding a threshold), base station 110 can infer that the interference from the second cell is also high (e.g., based at least in part on the association between the first and second cells). Accordingly, when receiving PDSCH transmissions, base station 110 can configure rate matching for the reference signal (e.g., CRS) of the second cell for UE 120. Therefore, UE 120 can suppress the execution of measurements of the reference signal (e.g., CRS) of the second cell, thereby saving processing resources of UE 120.

[0277] As shown by reference numeral 725, base station 110 can transmit and UE 120 can receive PDSCH transmissions (e.g., NR PDSCH) around a reference signal (e.g., CRS, CSI-RS, PSS, and / or SSS) that includes a second RAT. Accordingly, when receiving PDSCH transmissions, UE 120 can use a rate matching configuration to rate match around a reference signal (e.g., CRS) that includes a second RAT.

[0278] In this way, in the DSS carrier, UE 120 can receive PDSCH transmissions (e.g., NR PDSCH data) for the first RAT with reduced interference caused by the downlink reference signal (e.g., CRS) for the second RAT. Accordingly, the performance of PDSCH transmission can be improved.

[0279] As indicated above, Figure 7 This is provided as an example. Other examples may differ from the one provided. Figure 7 The example described.

[0280] Figure 8 This is a diagram illustrating an example procedure 800 performed by a UE according to this disclosure. Example procedure 800 is an example of a UE (e.g., UE 120) performing operations associated with reference signal interference cancellation.

[0281] like Figure 8 As shown, in some aspects, process 800 may include: receiving information from a base station identifying an association between a first cell of a first RAT and a second cell of a second RAT (block 810). For example, a UE (e.g., using...) Figure 12 The receiving component 1202 described herein can receive information from the base station regarding the association between a first cell of a first RAT and a second cell of a second RAT, as described above.

[0282] As in Figure 8 As further illustrated, in some aspects, process 800 may include: performing measurements for the first cellular cell (block 820). For example, the UE (e.g., using...) Figure 12 The measurement component 1208 described herein can perform measurements for the first cell, as described above.

[0283] As in Figure 8 As further illustrated, in some aspects, process 800 may include: determining that a measurement for the first cell satisfies a threshold (box 830). For example, the UE (e.g., using...) Figure 12The determining component 1210 described herein can determine that the measurement for the first cell meets the threshold, as described above.

[0284] As in Figure 8 As further illustrated, in some aspects, process 800 may include: performing interference cancellation operations on a reference signal of a second cell based at least in part on determining that measurements for a first cell satisfy a threshold and the association between the first and second cells, or performing deweighting operations on one or more resource elements where the reference signal interferes (box 840). For example, a UE (e.g., using...) Figure 12 The interference cancellation component 1212 described herein may perform interference cancellation operations on a reference signal of a second cell or perform deweighting operations on one or more resource elements in which the reference signal interferes, at least in part, based on determining that the measurement for the first cell satisfies a threshold and the correlation between the first cell and the second cell, as described above.

[0285] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0286] In the first aspect, the reference signal is CRS, CSI-RS, PSS, or SSS.

[0287] In the second aspect, either alone or in combination with the first aspect, the first RAT is the NR RAT and the second RAT is the E-UTRA RAT.

[0288] In the third aspect, either alone or in combination with one or more of the first and second aspects, the measurement for the first cell is a measurement of SSB, TRS, or CSI-RS.

[0289] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, the threshold is the RSRP value, RSSI value, RSRQ value, SINR value, path loss estimate, MCS index value, number of transport layers, or clustering level.

[0290] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0291] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized, the first cell and the second cell are co-located, or the first cell and the second cell use the same precoding.

[0292] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the first cell and the second cell share downlink time and frequency resources.

[0293] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, process 800 includes receiving (e.g., using receiving component 1202) information identifying the configuration of the CRS for the second cell.

[0294] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of CRS antenna ports.

[0295] In the tenth aspect, the interference elimination operation is performed, either alone or in combination with one or more of the first to ninth aspects, at least in part based on the configuration for CRS.

[0296] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 800 includes receiving (e.g., using receiving component 1202) information on at least one of a timing offset or a power offset between a downlink signal identifying the first cell and a reference signal identifying the second cell.

[0297] In the twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, process 800 includes receiving (e.g., using receiving component 1202) information identifying one or more cells of a first RAT to which the UE wants to perform a measurement, the one or more cells including the first cell.

[0298] In the thirteenth aspect, the interference cancellation operation, either alone or in combination with one or more of the first to twelfth aspects, includes generating a copy of the interference signal and subtracting a copy of the interference signal from one or more resource elements.

[0299] In the fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, the first cell and the second cell use OFDM-based waveforms and the same subcarrier spacing.

[0300] In the fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, process 800 includes receiving a PDSCH transmission on a first cell, and interference cancellation operation is performed when the PDSCH transmission is received.

[0301] although Figure 8 An example box of process 800 is shown, but in some respects, process 800 may include... Figure 8 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes of process 800 can be executed in parallel.

[0302] Figure 9 This is a diagram illustrating an example process 900 performed by a base station according to this disclosure. Example process 900 is an example in which a base station (e.g., base station 110) performs operations associated with reference signal interference cancellation.

[0303] like Figure 9 As shown, in some aspects, process 900 may include: generating information identifying the association between a first cell of a first RAT and a second cell of a second RAT (box 910). For example, a base station (e.g., using...) Figure 13 The information generation component 1308 described herein can generate information identifying the association between a first cell of a first RAT and a second cell of a second RAT, as described above.

[0304] As in Figure 9 As further illustrated, in some aspects, process 900 may include: transmitting to the UE information identifying the association between a first cell of the first RAT and a second cell of the second RAT (box 920). For example, a base station (e.g., using...) Figure 13 The transmission component 1304 described herein can transmit to the UE information identifying the association between the first cell of the first RAT and the second cell of the second RAT, as described above.

[0305] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0306] In the first respect, the first RAT is the NR RAT and the second RAT is the E-UTRA RAT.

[0307] In a second aspect, either alone or in combination with the first aspect, the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0308] In a third aspect, either alone or in combination with one or more of the first and second aspects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized, the first cell and the second cell are co-located, or the first cell and the second cell use the same precoding.

[0309] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, the first cell and the second cell share downlink time and frequency resources.

[0310] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, process 900 includes transmitting (e.g., using transmission component 1304) information identifying the configuration of the CRS for the second cell.

[0311] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of CRS antenna ports.

[0312] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, process 900 includes transmitting (e.g., using transmission component 1304) information on at least one of a timing offset or a power offset between a downlink signal identifying the first cell and a reference signal identifying the second cell.

[0313] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, process 900 includes transmitting (e.g., using transmission component 1304) information identifying one or more cells of a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0314] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the first cell and the second cell use OFDM-based waveforms and the same subcarrier spacing.

[0315] although Figure 9 An example box of process 900 is shown, but in some respects, process 900 may include... Figure 9 The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 900 can be executed in parallel.

[0316] Figure 10This is a diagram illustrating an example procedure 1000 performed by a UE according to this disclosure. Example procedure 1000 is an example of an operation performed by a UE (e.g., UE 120) associated with a reference signal rate matching.

[0317] like Figure 10 As shown, in some aspects, process 1000 may include: transmitting measurements of a first cell for a first RAT to a base station (block 1010). For example, the UE (e.g., using...) Figure 12 The transmission component 1204 described herein can transmit measurements of the first cell for the first RAT to the base station, as described above.

[0318] As in Figure 10 As further illustrated, in some aspects, process 1000 may include: receiving from the base station a configuration (block 1020) for rate matching of one or more reference signals for a second cell around a second RAT, at least in part based on measurements for a first cell satisfying a threshold and the association between the first and second cells. For example, the UE (e.g., using...) Figure 12 The receiving component 1202 described herein may receive from the base station a configuration for rate matching of one or more reference signals for a second cell around a second RAT, at least in part based on a measurement threshold met for the first cell and the correlation between the first cell and the second cell, as described above.

[0319] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0320] In the first aspect, one or more reference signals include CRS, CSI-RS, PSS, or SSS.

[0321] In the second aspect, either alone or in combination with the first aspect, the first RAT is the NR RAT and the second RAT is the E-UTRA RAT.

[0322] In the third aspect, either alone or in combination with one or more of the first and second aspects, the measurement for the first cell is a measurement of SSB, TRS, or CSI-RS.

[0323] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, the threshold is the RSRP value, RSSI value, RSRQ value, SINR value, path loss estimate, MCS index value, number of transport layers, or clustering level.

[0324] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized, the first cell and the second cell are co-located, or the first cell and the second cell use the same precoding.

[0325] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the first cell and the second cell share downlink time and frequency resources.

[0326] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, process 1000 includes receiving (e.g., using receiving component 1202) information identifying one or more cells of a first RAT to which the UE wants to perform a measurement, the one or more cells including the first cell.

[0327] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the first cell and the second cell use OFDM-based waveforms and the same subcarrier spacing.

[0328] In the ninth aspect, alone or in combination with one or more of the first to eighth aspects, process 1000 includes receiving PDSCH transmissions on the first cell using a configuration for rate matching.

[0329] although Figure 10 An example box of process 1000 is shown, but in some respects, process 1000 may include... Figure 10 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes of process 1000 can be executed in parallel.

[0330] Figure 11 This is a diagram illustrating an example process 1100 performed by a base station according to this disclosure. Example process 1100 is an example in which a base station (e.g., base station 110) performs operations associated with matching a reference signal rate.

[0331] like Figure 11 As shown, in some aspects, process 1100 may include: receiving measurements from the UE for a first cell in relation to a first RAT (block 1110). For example, a base station (e.g., using...) Figure 13 The receiving component 1302 described herein can receive measurements of the first cell for the first RAT from the UE, as described above.

[0332] As in Figure 11As further illustrated, in some aspects, process 1100 may include: determining that measurements for the first cell meet a threshold (box 1120). For example, a base station (e.g., using...) Figure 13 The determining component 1310 described herein can determine that the measurement for the first cell meets the threshold, as described above.

[0333] As in Figure 11 As further illustrated, in some aspects, process 1100 may include: transmitting to the UE a configuration for rate matching of one or more reference signals around a second cell for a second RAT, at least in part based on determining that measurements for a first cell meet a threshold and the association between the first and second cells (block 1130). For example, a base station (e.g., using...) Figure 13 The transmission component 1304 described herein may transmit to the UE a configuration for rate matching of one or more reference signals around the second cell of the second RAT, as described above, based at least in part on determining that a measurement satisfies a threshold for the first cell and the association between the first cell and the second cell.

[0334] Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0335] In the first aspect, one or more reference signals include CRS, CSI-RS, PSS, or SSS.

[0336] In the second aspect, either alone or in combination with the first aspect, the first RAT is the NR RAT and the second RAT is the E-UTRA RAT.

[0337] In the third aspect, either alone or in combination with one or more of the first and second aspects, the measurement for the first cell is a measurement of SSB, TRS, or CSI-RS.

[0338] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, the threshold is the RSRP value, RSSI value, RSRQ value, SINR value, path loss estimate, MCS index value, number of transport layers, or clustering level.

[0339] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized, the first cell and the second cell are co-located, or the first cell and the second cell use the same precoding.

[0340] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the first cell and the second cell share downlink time and frequency resources.

[0341] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, process 1100 includes transmitting (e.g., using transmission component 1304) information identifying one or more cells of a first RAT to which the UE will perform a measurement, the one or more cells including the first cell.

[0342] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the first cell and the second cell use OFDM-based waveforms and the same subcarrier spacing.

[0343] although Figure 11 An example box of process 1100 is shown, but in some respects, process 1100 may include... Figure 11 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 1100 can be executed in parallel.

[0344] Figure 12 This is a block diagram of an example device 1200 for wireless communication. Device 1200 may be a UE, or a UE may include device 1200. In some aspects, device 1200 includes a receiving component 1202 and a transmitting component 1204, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1200 may use the receiving component 1202 and the transmitting component 1204 to communicate with another device 1206 (such as a UE, a base station, or another wireless communication device). As further shown, device 1200 may include one or more of a measurement component 1208, a determination component 1210, or an interference cancellation component 1212, etc.

[0345] In some respects, device 1200 can be configured to perform the functions described herein. Figure 6-7 One or more operations as described herein. Additionally or alternatively, the apparatus 1200 may be configured to perform one or more processes described herein (such as...). Figure 8 The process 800 Figure 10 Process 1000, or a combination thereof). In some aspects, device 1200 and / or Figure 12 One or more components shown may include the above combination Figure 2 One or more components of the described UE. Additionally or alternatively, Figure 12 One or more components shown can be combined as described above. Figure 2Implemented within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of that component.

[0346] Receiver 1202 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from device 1206. Receiver 1202 may provide the received communications to one or more other components of device 1200. In some aspects, receiver 1202 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 1206. In some aspects, receiver 1202 may include combinations of the above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0347] The transmission component 1204 can transmit communications (such as reference signals, control information, data communications, or combinations thereof) to the device 1206. In some aspects, one or more other components of the device 1206 can generate communications and provide the generated communications to the transmission component 1204 for transmission to the device 1206. In some aspects, the transmission component 1204 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and can transmit the processed signals to the device 1206. In some aspects, the transmission component 1204 may include combinations of the above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1204 may be co-located with the receive component 1202 in a transceiver.

[0348] The receiving component 1202 can receive information from the base station regarding the association between a first cell identifying a first RAT and a second cell identifying a second RAT. The measurement component 1208 can perform measurements for the first cell. The determining component 1210 can determine that the measurements for the first cell satisfy a threshold. The interference cancellation component 1212 can perform interference cancellation operations on a reference signal of the second cell, or perform deweighting operations on one or more resource elements where the reference signal interferes, based at least in part on determining that the measurements for the first cell satisfy the threshold and the association between the first and second cells.

[0349] In some aspects, the measuring component 1208 may include the above combination. Figure 2 The described UE includes a controller / processor, memory, or a combination thereof. In some aspects, determining component 1210 may include the above combinations. Figure 2 The described UE includes a controller / processor, memory, or a combination thereof. In some aspects, the interference cancellation component 1212 may include the above combination. Figure 2 The described UE's controller / processor, memory, or a combination thereof.

[0350] The receiving component 1202 may receive information identifying the configuration of the CRS for the second cell. The receiving component 1202 may receive information identifying at least one of the timing offset or power offset between the downlink signal of the first cell and the reference signal of the second cell. The receiving component 1202 may receive information identifying one or more cells of the first RAT to which the UE wants to perform measurements (e.g., the one or more cells include the first cell).

[0351] The transmission component 1204 can transmit measurements of a first cell for a first RAT to the base station. The receiving component 1302 can receive from the base station a configuration for rate matching of one or more reference signals around a second cell for a second RAT, based at least in part on the measurement of the first cell satisfying a threshold and the correlation between the first cell and the second cell. The receiving component 1202 can receive information identifying one or more cells of the first RAT for which the UE wants to perform measurements (e.g., the one or more cells include the first cell).

[0352] Figure 12 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 12 The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 12 The two or more components shown can be implemented within a single component, or Figure 12 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 12 The collection of components shown (e.g., one or more components) can be executed as described by Figure 12 The other set of components shown in the diagram performs one or more functions.

[0353] Figure 13This is a block diagram of an example device 1300 for wireless communication. Device 1300 may be a base station, or a base station may include device 1300. In some aspects, device 1300 includes a receiving component 1302 and a transmitting component 1304, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1300 may use the receiving component 1306 and the transmitting component 1302 to communicate with another device 1304 (such as a UE, a base station, or another wireless communication device). As further shown, device 1300 may include one or more of an information generation component 1308 or a determination component 1310, etc.

[0354] In some respects, device 1300 can be configured to perform the functions described herein. Figure 6-7 The described one or more operations. Additionally or alternatively, the apparatus 1300 may be configured to perform one or more processes described herein (such as...). Figure 9 The process 900 Figure 11 Process 1100, or a combination thereof). In some aspects, device 1300 and / or Figure 13 One or more components shown may include the above combination. Figure 2 One or more components of the described base station. Additional or alternative. Figure 13 One or more components shown can be combined as described above. Figure 2 Implemented within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of that component.

[0355] Receiver 1302 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from device 1306. Receiver 1302 may provide the received communications to one or more other components of device 1300. In some aspects, receiver 1302 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 1306. In some aspects, receiver 1302 may include combinations of the above. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0356] The transmission component 1304 can transmit communications (such as reference signals, control information, data communications, or combinations thereof) to the device 1306. In some aspects, one or more other components of the device 1306 can generate communications and provide the generated communications to the transmission component 1304 for transmission to the device 1306. In some aspects, the transmission component 1304 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and can transmit the processed signals to the device 1306. In some aspects, the transmission component 1304 can include combinations of the above. Figure 2 The described base station includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1304 may be co-located with the receive component 1302 in a transceiver.

[0357] The information generation component 1308 can generate information identifying the association between a first cell of a first RAT and a second cell of a second RAT. The transmission component 1304 can transmit to the UE the information identifying the association between the first cell of the first RAT and the second cell of the second RAT.

[0358] Transmission component 1304 may transmit information identifying the configuration of the CRS for the second cell. Transmission component 1304 may transmit information identifying at least one of a timing offset or a power offset between the downlink signal of the first cell and the reference signal of the second cell. Transmission component 1304 may transmit information identifying one or more cells of a first RAT to which the UE will perform measurements (e.g., the one or more cells include the first cell).

[0359] The receiving component 1302 can receive measurements of a first cell for a first RAT from the UE. The determining component 1310 can determine that the measurements for the first cell meet a threshold. In some aspects, the determining component 1310 may include a combination of the above. Figure 2 The described base station's controller / processor, memory, or a combination thereof. Transmission component 1304 may transmit to the UE a configuration for rate matching of one or more reference signals around a second cell for a second RAT, based at least in part on determining that a measurement for a first cell satisfies a threshold and the association between the first and second cells. Transmission component 1304 may transmit information identifying one or more cells of the first RAT to which the UE intends to perform measurements (e.g., the one or more cells include the first cell).

[0360] Figure 13 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 13The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 13 The two or more components shown can be implemented within a single component, or Figure 13 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 13 The collection of components shown (e.g., one or more components) can be executed as described by Figure 13 The other set of components shown in the diagram performs one or more functions.

[0361] The following provides an overview of some aspects of this disclosure:

[0362] Aspect 1: A wireless communication method performed by a user equipment (UE), comprising: receiving from a base station information identifying an association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT; performing a measurement for the first cell; determining that the measurement for the first cell satisfies a threshold; and performing an interference cancellation operation for a reference signal of the second cell, or performing a deweighting operation for one or more resource elements where the reference signal interferes, based at least in part on the determination of the measurement satisfaction threshold for the first cell and the association between the first cell and the second cell.

[0363] Aspect 2: The method of aspect 1, wherein the reference signal is a reference signal that varies depending on the cell, a channel state information reference signal, a primary synchronization signal, or a secondary synchronization signal.

[0364] Aspect 3: The method of any of Aspects 1-2, wherein the first RAT is a new radio RAT and the second RAT is an evolved universal mobile telecommunications system terrestrial radio access RAT.

[0365] Aspect 4: The method of any of Aspects 1-3, wherein the measurement for the first cell is a measurement of a synchronization signal block, a tracking reference signal, or a channel state information reference signal.

[0366] Aspect 5: The method of any of Aspects 1-4, wherein the threshold is the received power value of the reference signal, the received signal strength indicator value, the received quality value of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0367] Aspect 6: The method of any of Aspects 1-5, wherein the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0368] Aspect 7: The method of any of Aspects 1-6, wherein the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0369] Aspect 8: The method of any of Aspects 1-7, wherein the first cell and the second cell share downlink time and frequency resources.

[0370] Aspect 9: The method of any of Aspects 1-8 further includes: receiving information identifying the configuration of a cell-specific reference signal for a second cell.

[0371] Aspect 10: The method of aspect 9, wherein the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0372] Aspect 11: The method of any of Aspects 9-10, wherein the interference cancellation operation is performed at least in part based on the configuration of a reference signal that varies from cell to cell.

[0373] Aspect 12: The method of any of Aspects 1-11 further includes: receiving information on at least one of a timing offset or a power offset between a downlink signal identifying a first cell and a reference signal identifying a second cell.

[0374] Aspect 13: The method of any of Aspects 1-12 further includes: receiving information of one or more cells identifying a first RAT to which the UE intends to perform a measurement, the one or more cells including the first cell.

[0375] Aspect 14: The method of any of Aspects 1-13, wherein performing the interference cancellation operation includes: generating a copy of the interference signal; and subtracting a copy of the interference signal from one or more resource elements.

[0376] Aspect 15: The method of any of Aspects 1-14, wherein the first cell and the second cell use waveforms based on orthogonal frequency division multiplexing (OFDM) and the same subcarrier spacing.

[0377] Aspect 16: The method of any of Aspects 1-15 further includes: receiving a Physical Downlink Shared Channel (PDSCH) transmission on a first cell, wherein interference cancellation operation is performed when the PDSCH transmission is received.

[0378] Aspect 17: A wireless communication method performed by a base station, comprising: generating information identifying an association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT; and transmitting to a user equipment (UE) the information identifying the association between the first cell of the first RAT and the second cell of the second RAT.

[0379] Aspect 18: The method of aspect 17, wherein the first RAT is a new radio RAT and the second RAT is an evolved universal mobile telecommunications system terrestrial radio access RAT.

[0380] Aspect 19: The method of any of Aspects 17-18, wherein the association between the first cell and the second cell associates one or more beams of the first cell with the second cell.

[0381] Aspect 20: The method of any of Aspects 17-19, wherein the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0382] Aspect 21: The method of aspect 20, wherein the first cell and the second cell share downlink time and frequency resources.

[0383] Aspect 22: The method of any of Aspects 17-21 further includes: transmitting information identifying the configuration of a cell-specific reference signal for a second cell.

[0384] Aspect 23: The method of aspect 22, wherein the configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

[0385] Aspect 24: The method of any of Aspects 17-23 further includes: transmitting information of at least one of a timing offset or a power offset between a downlink signal identifying the first cell and a reference signal identifying the second cell.

[0386] Aspect 25: The method of any of Aspects 17-24 further includes: transmitting information of one or more cells identifying a first RAT to which the UE is to perform a measurement, the one or more cells including the first cell.

[0387] Aspect 26: The method of any of Aspects 17-25, wherein the first cell and the second cell use waveforms based on orthogonal frequency division multiplexing (OFDM) and the same subcarrier spacing.

[0388] Aspect 27: A wireless communication method performed by a user equipment (UE) comprising: transmitting to a base station measurements of a first cell for a first radio access technology (RAT); and receiving from the base station, at least in part, a configuration for rate matching of one or more reference signals for a second cell around a second RAT, based on the measurements of the first cell satisfying a threshold and an association between the first cell and a second cell.

[0389] Aspect 28: The method of aspect 27, wherein one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0390] Aspect 29: The method of any of Aspects 27-28, wherein the first RAT is a new radio RAT and the second RAT is an evolved universal mobile telecommunications system terrestrial radio access RAT.

[0391] Aspect 30: The method of any of Aspects 27-29, wherein the measurement for the first cell is a measurement of a synchronization signal block, a tracking reference signal, or a channel state information reference signal.

[0392] Aspect 31: The method of any of Aspects 27-30, wherein the threshold is the received power value of the reference signal, the received signal strength indicator value, the received quality value of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0393] Aspect 32: The method of any of Aspects 27-31, wherein the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0394] Aspect 33: The method of any of Aspects 27-32, wherein the first cell and the second cell share downlink time and frequency resources.

[0395] Aspect 34: The method of any of Aspects 27-33 further includes: receiving information of one or more cells identifying a first RAT to which the UE intends to perform a measurement, the one or more cells including the first cell.

[0396] Aspect 35: The method of any of Aspects 27-34, wherein the first cell and the second cell use waveforms based on orthogonal frequency division multiplexing (OFDM) and the same subcarrier spacing.

[0397] Aspect 36: The method of any of Aspects 27-35 further includes: receiving physical downlink shared channel transmissions on a first cell using a configuration for rate matching.

[0398] Aspect 37: A wireless communication method performed by a base station, comprising: receiving from a user equipment (UE) measurements of a first cell for a first radio access technology (RAT); determining a measurement satisfaction threshold for the first cell; and transmitting to the UE, at least in part, a configuration for rate matching of one or more reference signals around a second cell of a second RAT, based on the determination of the measurement satisfaction threshold for the first cell and an association between the first cell and a second cell.

[0399] Aspect 38: The method of aspect 37, wherein one or more reference signals include reference signals that vary depending on the cell, channel state information reference signals, primary synchronization signals, or secondary synchronization signals.

[0400] Aspect 39: The method of any of Aspects 37-38, wherein the first RAT is a new radio RAT and the second RAT is an evolved universal mobile telecommunications system terrestrial radio access RAT.

[0401] Aspect 40: The method of any of Aspects 37-39, wherein the measurement for the first cell is a measurement of a synchronization signal block, a tracking reference signal, or a channel state information reference signal.

[0402] Aspect 41: The method of any of Aspects 37-40, wherein the threshold is the received power value of the reference signal, the received signal strength indicator value, the received quality value of the reference signal, the signal-to-interference-plus-noise ratio, the path loss estimate, the modulation and coding scheme index value, the number of transmission layers, or the aggregation level.

[0403] Aspect 42: The method of any of Aspects 37-41, wherein the association between the first cell and the second cell indicates at least one of the following: the first cell and the second cell are time-synchronized; the first cell and the second cell are co-located; or the first cell and the second cell use the same precoding.

[0404] Aspect 43: The method of any of Aspects 37-42, wherein the first cell and the second cell share downlink time and frequency resources.

[0405] Aspect 44: The method of any of Aspects 37-43 further includes: transmitting information of one or more cells identifying a first RAT to which the UE is to perform a measurement, the one or more cells including the first cell.

[0406] Aspect 45: The method of any of Aspects 37-44, wherein the first cell and the second cell use waveforms based on orthogonal frequency division multiplexing (OFDM) and the same subcarrier spacing.

[0407] Aspect 46: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform methods as described in one or more of aspects 1 to 16.

[0408] Aspect 47: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors being configured to perform methods as described in one or more aspects of aspects 1 to 16.

[0409] Aspect 48: A device for wireless communication, comprising at least one means for performing a method as described in one or more aspects of aspects 1 to 16.

[0410] Aspect 49: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in one or more aspects of aspects 1 to 16.

[0411] Aspect 50: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform methods as described in one or more aspects of aspects 1 to 16.

[0412] Aspect 51: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods of aspects 17-26.

[0413] Aspect 52: An apparatus for wireless communication, comprising a memory; and one or more processors coupled to the memory, the one or more processors being configured to perform one or more of the methods of aspects 17-26.

[0414] Aspect 53: An apparatus for wireless communication, comprising at least one means for performing one or more methods as described in aspects 17-26.

[0415] Aspect 54: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform one or more of the methods of aspects 17-26.

[0416] Aspect 55: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more methods as described in aspects 17-26.

[0417] Aspect 56: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods of aspects 27-36.

[0418] Aspect 57: An apparatus for wireless communication, comprising a memory; and one or more processors coupled to the memory, the one or more processors being configured to perform one or more of the methods of aspects 27-36.

[0419] Aspect 58: An apparatus for wireless communication, comprising at least one means for performing one or more methods as described in aspects 27-36.

[0420] Aspect 59: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform one or more of the methods of aspects 27-36.

[0421] Aspect 60: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more methods as described in aspects 27-36.

[0422] Aspect 61: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods of aspects 37-45.

[0423] Aspect 62: An apparatus for wireless communication, comprising a memory; and one or more processors coupled to the memory, the one or more processors being configured to perform one or more of the methods of aspects 37-45.

[0424] Aspect 63: An apparatus for wireless communication, comprising at least one means for performing one or more methods as described in aspects 37-45.

[0425] Aspect 64: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform one or more methods as described in aspects 37-45.

[0426] Aspect 65: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more methods as described in aspects 37-45.

[0427] The foregoing disclosure provides explanations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the foregoing disclosure or may be obtained through practice.

[0428] As used herein, the term "component" is intended to be broadly interpreted as hardware and / or a combination of hardware and software. "Software" should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and / or functions, whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms. As used herein, a "processor" is implemented in hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limited in any way. Therefore, the operation and behavior of these systems and / or methods are described herein without reference to any specific software code, as those skilled in the art will understand that software and hardware can be designed to implement these systems and / or methods, at least in part, based on the description herein.

[0429] As used in this article, depending on the context, "meeting the threshold" can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0430] Although specific combinations of features are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of aspects. Many of these features may be combined in ways not specifically described in the claims and / or disclosed in the specification. The disclosure of aspects includes each dependent claim in combination with each other claim in the claim set. As used herein, the phrase “at least one of” refers to any combination of these items, including single members. As an example, “at least one of a, b, or c” is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination having multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0431] The elements, actions, or instructions used herein should not be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “a certain” are intended to include one or more items and may be used interchangeably with “one or more.” Additionally, as used herein, the article “the” is intended to include one or more items referenced in conjunction with the article “the” and may be used interchangeably with “one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items and may be used interchangeably with “one or more.” In cases where only one item is intended, the phrase “only one” or similar language is used. Moreover, as used herein, the terms “have,” “contain,” “include,” etc., are intended to be open-ended terms that do not limit the elements they modify (e.g., the element “has” A may also have B). Furthermore, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Moreover, as used herein, the term “or” is intended to be inclusive when used in a sequence and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., in combination with “either of” or “only one of”).

Claims

1. A wireless communication method performed by a user equipment (UE), comprising: Information is received from a network entity identifying the association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT, wherein the association between the first cell of the first RAT and the second cell of the second RAT indicates the association of one or more beams of the first cell of the first RAT and the second cell of the second RAT. Perform measurements for the first cell; Determine that the measurement for the first cell meets a threshold; as well as Interference cancellation operations are performed on the reference signal of the second cell, at least in part, based on determining that the measurement for the first cell satisfies the threshold and the association between the first cell and the second cell, or deweighting operations are performed on one or more resource elements that are interfered with by the reference signal.

2. The method of claim 1, wherein the reference signal is a reference signal that varies depending on the cell, a channel state information reference signal, a primary synchronization signal, or a secondary synchronization signal.

3. The method of claim 1, wherein the first RAT is a new radio RAT and the second RAT is an evolved universal mobile telecommunications system terrestrial radio access RAT.

4. The method of claim 1, wherein the measurement for the first cell is a measurement of a synchronization block, a tracking reference signal, or a channel state information reference signal.

5. The method of claim 1, wherein the threshold is a received power value of a reference signal, a received signal strength indicator value, a received quality value of a reference signal, a signal-to-interference-plus-noise ratio, a path loss estimate, a modulation and coding scheme index value, a number of transmission layers, or a clustering level.

6. The method of claim 1, wherein the association between the first cell and the second cell further indicates at least one of the following: The first cell and the second cell are time-synchronized; The first cell and the second cell are co-located; or The first cell and the second cell use the same precoding.

7. The method of claim 1, further comprising: Information is received identifying the configuration of a cell-specific reference signal for the second cell. The configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that varies depending on the cell. The interference cancellation operation is performed at least in part based on the configuration for the reference signal, which varies depending on the cell.

8. The method of claim 1, further comprising: Receive information identifying at least one of a timing offset or a power offset between a downlink signal of the first cell and a reference signal of the second cell.

9. The method of claim 1, further comprising: Receive information of one or more cells that identify the first RAT to which the UE wants to perform a measurement, the one or more cells including the first cell.

10. The method of claim 1, further comprising: Receive Physical Downlink Shared Channel (PDSCH) transmissions on the first cell. The interference cancellation operation is performed when the PDSCH transmission is received.

11. A wireless communication method performed by a network entity, comprising: Information is generated that identifies the association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT, wherein the association between the first cell of the first RAT and the second cell of the second RAT indicates the association of one or more beams of the first cell of the first RAT and the second cell of the second RAT. as well as The information identifying the association between the first cell of the first RAT and the second cell of the second RAT is transmitted to the user equipment (UE).

12. The method of claim 11, wherein the first RAT is a new radio RAT and the second RAT is an evolved universal mobile telecommunications system terrestrial radio access RAT.

13. The method of claim 11, wherein the association between the first cell and the second cell further indicates at least one of the following: The first cell and the second cell are time-synchronized; The first cell and the second cell are co-located; or The first cell and the second cell use the same precoding.

14. The method of claim 11, further comprising: Information is transmitted to identify the configuration of the reference signal for the second cell, which varies from cell to cell. The configuration identifier refers to at least one of the following: the cell identifier of the second cell, v-shift Parameters, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary depending on the cell.

15. The method of claim 11, further comprising: Transmit information identifying at least one of a timing offset or a power offset between the downlink signal of the first cell and the reference signal of the second cell.

16. The method of claim 11, further comprising: Transmit information about one or more cells that identify the first RAT to which the UE is to perform a measurement, the one or more cells including the first cell.

17. A user equipment (UE) for wireless communication, comprising: One or more memory units; as well as One or more processors coupled to the one or more memories, the one or more processors being configured to: Information is received from a network entity identifying the association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT, wherein the association between the first cell of the first RAT and the second cell of the second RAT indicates the association of one or more beams of the first cell of the first RAT and the second cell of the second RAT. Perform measurements for the first cell; Determine that the measurement for the first cell meets a threshold; as well as Interference cancellation operations are performed on the reference signal of the second cell, at least in part, based on determining that the measurement for the first cell satisfies the threshold and the association between the first cell and the second cell, or deweighting operations are performed on one or more resource elements that are interfered with by the reference signal.

18. The UE of claim 17, wherein the reference signal is a cell-specific reference signal, a channel state information reference signal, a primary synchronization signal, or a secondary synchronization signal.

19. The UE of claim 17, wherein the measurement for the first cell is a measurement of a synchronization block, a tracking reference signal, or a channel state information reference signal.

20. The UE of claim 17, wherein the threshold is a reference signal received power value, a received signal strength indicator value, a reference signal received quality value, a signal-to-interference-plus-noise ratio value, a path loss estimate value, a modulation and coding scheme index value, a number of transmission layers, or a clustering level.

21. The UE of claim 17, wherein the association between the first cell and the second cell further indicates at least one of the following: The first cell and the second cell are time-synchronized; The first cell and the second cell are co-located; or The first cell and the second cell use the same precoding.

22. The UE of claim 17, wherein the one or more processors are further configured to: Information is received identifying the configuration of a cell-specific reference signal for the second cell. The configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that varies depending on the cell. The interference cancellation operation is performed at least in part based on the configuration for the reference signal, which varies depending on the cell.

23. The UE of claim 17, wherein the one or more processors are further configured to: Receive information identifying at least one of a timing offset or a power offset between a downlink signal of the first cell and a reference signal of the second cell.

24. The UE of claim 17, wherein the one or more processors are further configured to: Receive information of one or more cells that identify the first RAT to which the UE wants to perform a measurement, the one or more cells including the first cell.

25. A network entity for wireless communication, comprising: One or more memory units; as well as One or more processors coupled to the one or more memories, the one or more processors being configured to: Information is generated that identifies the association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT, wherein the association between the first cell of the first RAT and the second cell of the second RAT indicates the association of one or more beams of the first cell of the first RAT and the second cell of the second RAT. as well as The information identifying the association between the first cell of the first RAT and the second cell of the second RAT is transmitted to the user equipment (UE).

26. The network entity of claim 25, wherein the association between the first cell and the second cell further indicates at least one of the following: The first cell and the second cell are time-synchronized; The first cell and the second cell are co-located; or The first cell and the second cell use the same precoding.

27. The network entity of claim 25, wherein the one or more processors are further configured to: Information is transmitted to identify the configuration of the reference signal for the second cell, which varies from cell to cell. The configuration identifies at least one of the following: the cell identifier of the second cell, the v-shift parameter, the bandwidth associated with the second cell, or the number of reference signal antenna ports that vary from cell to cell.

28. The network entity of claim 25, wherein the one or more processors are further configured to: Transmit information identifying at least one of a timing offset or a power offset between the downlink signal of the first cell and the reference signal of the second cell.

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