Sidelink reception with multiple transmit and receive points

Abstract

Methods, systems, and apparatus for wireless communications are described. A user equipment (UE) having multiple transmit receive points (TRPs) (e.g., a multi-TRP UE) may receive sidelink control information including an interference measurement configuration that indicates resources allocated for sidelink interference measurements across the multiple TRPs. In some cases, the multi-TRP UE may decode the sidelink control information including the interference measurement configuration. The multi-TRP UE may receive one or more signals from a first UE, a second UE, or both. The multi-TRP UE may perform sidelink interference measurements on each of the signals based on the interference measurement configuration. The multi-TRP UE may determine whether to process the signals in combination or separately across the TRPs based on the sidelink interference measurements.

Description

Technical Field

[0001] The following relates to wireless communications, including sidelink reception with multiple transmit receive points (TRPs). Background Art

[0002] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, etc. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (e.g., long term evolution (LTE) systems, improved LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting communication for multiple communication devices (which may also be referred to as user equipment (UE)). Summary of the Invention

[0003] The described technology relates to improved methods, systems, devices, and apparatus for supporting sidelink reception with multiple transmit receive points (TRPs). In summary, the described technology provides for a user equipment (UE) with multiple TRPs (e.g., a multi-TRP UE) to perform sidelink interference measurements on one or more signals to determine whether to process the signals in combination or separately. For example, the multi-TRP UE may receive sidelink control information including an interference measurement configuration, which indicates resources allocated for sidelink interference measurements across multiple TRPs. In some cases, the multi-TRP UE may decode the sidelink control information including the interference measurement configuration. Subsequently, the multi-TRP UE may receive one or more signals from a first UE, a second UE, or both. The multi-TRP UE may perform sidelink interference measurements on each signal based on the interference measurement configuration. In some cases, the multi-TRP UE may determine whether to process the signals in combination or separately across the TRPs based on the sidelink interference measurements.

[0004] A method of wireless communication at a first UE is described. The method may include receiving an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across multiple TRPs; receiving a first signal from a second UE using a first TRP of the first UE and receiving a second signal from the second UE using a second TRP of the first UE; measuring a first sidelink interference for the first signal and a second sidelink interference for the second signal based on the interference measurement configuration; comparing the first sidelink interference and the second sidelink interference to a sidelink interference threshold; and processing the first signal and the second signal, combined on the first TRP and the second TRP or separately across the first TRP and the second TRP based on the comparison.

[0005] An apparatus for wireless communication at a first UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to perform the following operations: receive an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across multiple TRPs; receive a first signal from a second UE using a first TRP of the first UE, and receive a second signal from the second UE using a second TRP of the first UE; measure a first sidelink interference for the first signal and a second sidelink interference for the second signal based on the interference measurement configuration; compare the first sidelink interference and the second sidelink interference to a sidelink interference threshold; and process the first signal and the second signal in combination on the first TRP and the second TRP or separately across the first TRP and the second TRP based on the comparison.

[0006] Another apparatus for wireless communication at a first UE is described. The apparatus may include means for receiving an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across multiple TRPs; receiving a first signal from a second UE using a first TRP of the first UE and receiving a second signal from the second UE using a second TRP of the first UE; measuring a first sidelink interference for the first signal and a second sidelink interference for the second signal based on the interference measurement configuration; comparing the first sidelink interference and the second sidelink interference to a sidelink interference threshold; and processing the first signal and the second signal, combined on the first TRP and the second TRP or separately across the first TRP and the second TRP based on the comparison.

[0007] A non-transitory computer-readable medium storing code for wireless communication at a first UE is described. The code may include instructions executable by a processor to: receive an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across multiple transmission time intervals (TRPs); receive a first signal from a second UE using a first transmission time interval (TRP) of the first UE, and receive a second signal from the second UE using a second transmission time interval (TRP) of the first UE; measure first sidelink interference for the first signal and second sidelink interference for the second signal based on the interference measurement configuration; compare the first sidelink interference and the second sidelink interference to a sidelink interference threshold; and process the first signal and the second signal, combined on the first and second TRPs or separately across the first and second TRPs, based on the comparison.

[0008] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: identifying the resources allocated for the sidelink interference measurement based on an index indicated by the interference measurement configuration, wherein the index indicates a resource pattern from a configured set of resource patterns.

[0009] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for determining the resources allocated for the sidelink interference measurement based on a formula, wherein the interference measurement configuration indicates that the resources allocated for the sidelink interference measurement may have already been allocated.

[0010] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for identifying the resources allocated for the sidelink interference measurement as randomly punctured resources based on a bitmap indicated by the interference measurement configuration.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, measuring the first sidelink interference and the second sidelink interference may include operations, features, units, or instructions for performing the following operations: receiving sidelink control information from the second UE, the sidelink control information including the interference measurement configuration; and measuring the received signal strength of the first signal and the second signal on the resources allocated for the sidelink interference measurement.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, processing the first signal and the second signal can include operations, features, units, or instructions for performing the following operations: determining that the first sidelink interference and the second sidelink interference can be less than or equal to the sidelink interference threshold; and based on determining that the first sidelink interference and the second sidelink interference can be less than or equal to the sidelink interference threshold, decoding the first signal and the second signal in combination at the first TRP and the second TRP.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: measuring the first sidelink interference and the second sidelink interference based on energy per resource element (EPRE), received signal strength indicator (RSSI), or both corresponding to the first signal and the second signal.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first signal and the second signal are associated with a broadcast transmission, a multicast transmission, or any combination.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, processing the first signal and the second signal can include operations, features, units, or instructions for performing the following operations: determining that the first sidelink interference or the second sidelink interference can be greater than the sidelink interference threshold; and based on determining that the first sidelink interference or the second sidelink interference can be greater than the sidelink interference threshold, decoding the first signal and the second signal separately across the first TRP and the second TRP.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for performing interference cancellation operations based on the first sidelink interference and the second sidelink interference.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the interference cancellation operation may include operations, features, units, or instructions for determining that one or more reference signals associated with the first signal may be non-orthogonal to one or more reference signals associated with the second signal; and offsetting the non-orthogonality between one or more reference signals associated with the first signal and one or more reference signals associated with the second signal, wherein the offset may be based on the first sidelink interference and the second sidelink interference.

[0018] A method of wireless communication at a UE is described. The method may include: configuring resources allocated for sidelink interference measurement across multiple TRPs; determining an interference measurement configuration indicating the configured resources allocated for the sidelink interference measurement across the multiple TRPs; and sending an indication of the interference measurement configuration.

[0019] An apparatus for wireless communication at a user equipment terminal (UE) is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: configure resources allocated for sidelink interference measurement across multiple transmission resource mapping (TRPs); determine an interference measurement configuration indicating the configured resources allocated for sidelink interference measurement across the multiple TRPs; and send an indication of the interference measurement configuration.

[0020] Another apparatus for wireless communication at a UE is described. The apparatus may include means for configuring resources allocated for sidelink interference measurement across multiple TRPs; determining an interference measurement configuration indicating the configured resources allocated for sidelink interference measurement across the multiple TRPs; and sending an indication of the interference measurement configuration.

[0021] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: configure resources allocated for sidelink interference measurement across multiple TRPs; determine an interference measurement configuration indicating the configured resources allocated for sidelink interference measurement across the multiple TRPs; and send an indication of the interference measurement configuration.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, determining the interference measurement configuration may include operations, features, units, or instructions for performing the following operations: selecting a resource pattern from a set of configured resource patterns, wherein the interference measurement configuration includes an index indicating the selected resource pattern.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, determining the interference measurement configuration may include operations, features, units, or instructions for performing the following operations: determining the resources configured to be allocated for the sidelink interference measurement based on a formula, wherein the interference measurement configuration indicates that the resources configured to be allocated for the sidelink interference measurement may have already been allocated.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, determining the interference measurement configuration may include operations, features, units, or instructions for performing the following operations: puncturing one or more resource elements using the configured resources allocated for the sidelink measurement, wherein the interference measurement configuration includes a bitmap indicating the configured resources allocated for the sidelink measurement.

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: determining that a network congestion level exceeds a congestion threshold, wherein sending the indication of the interference measurement configuration may be based on determining that the network congestion level exceeds the congestion threshold.

[0026] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: identifying the presence of a UE having a TRP set, wherein sending the indication of the interference measurement configuration may be based on identifying the presence of the UE having the TRP set.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, identifying the presence of the UE having the TRP set may include operations, features, units, or instructions for performing the following operations: receiving control signaling indicating the capability of the UE having the TRP set.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, identifying the presence of the UE having the TRP set can include operations, features, units, or instructions for performing the following operations: receiving control signaling, the control signaling including an indication of additional resources allocated for the sidelink interference measurement.

[0029] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the configured resources allocated for the sidelink interference measurement include zero-power interference measurement resources (IMRs). BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figures 1 to 3 An example of a wireless communication system supporting sidelink reception with multiple transmit receive points (TRPs) in accordance with aspects of the present disclosure is shown.

[0031] Figure 4 and 5 An example of a process flow supporting sidelink reception with multiple TRPs in accordance with aspects of the present disclosure is shown.

[0032] Figure 6 and 7 A block diagram of a device supporting sidelink reception with multiple TRPs is shown in accordance with various aspects of the present disclosure.

[0033] Figure 8 A block diagram of a communications manager supporting sidelink reception with multiple TRPs is shown in accordance with aspects of the present disclosure.

[0034] Figure 9 A diagram of a system including a device supporting sidelink reception with multiple TRPs is shown in accordance with various aspects of the present disclosure.

[0035] Figures 10 to 15 A flow chart illustrating a method of supporting sidelink reception with multiple TRPs according to various aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0036] Some wireless communication systems (such as fifth generation (5G) systems, which may be referred to as new radio (NR) systems) may support sidelink communications. A sidelink may refer to a communication link between similar devices (such as user equipment (UE), a relay or terminal device, and other examples of devices). For example, a sidelink may support communication between multiple UEs (e.g., in a vehicle-to-everything (V2X) system, a vehicle-to-vehicle (V2V) system, a device-to-device (D2D) system, and other examples), between multiple base stations (e.g., in an integrated access and backhaul (IAB) deployment), or between other types of wireless communication devices. It should be noted that although the various examples provided herein are discussed with respect to UE sidelink devices, such sidelink technology may be used for any type of wireless device that uses sidelink communications. For example, a sidelink may support one or more of the following: D2D communication, V2X or V2V communication, message relay, discovery signaling, beacon signaling, or other signals sent over the air from one wireless device to one or more other similar wireless devices.

[0037] In some examples, a UE capable of sidelink communication may have multiple transmit receive points (TRPs) and may be referred to as a multi-TRP UE. For example, a multi-TRP UE may be capable of receiving signals from one or more UEs on multiple TRPs, which may be located at different locations at the multi-TRP UE. In some cases, each TRP may have a different received signal power. A multi-TRP UE may receive signals from a first UE and a second UE, which may not be visible to each other due to obstruction. In some cases, a multi-TRP UE may receive a first signal and a second signal originating from the same UE (e.g., the first signal is line-of-sight reception and the second signal is from a reflection). The transmissions from the first UE and the second UE may include non-orthogonal reference signals or interference management resources (IMRs), or may otherwise interfere with other signals being received by the multi-TRP UE. A multi-TRP UE may have the ability to combine signals across TRPs or process signals separately. However, a multi-TRP UE may not have sufficient information to determine whether to process the signals in combination or separately, which may result in relatively poor channel estimation at the multi-TRP UE (eg, a noisy channel may result in incorrect equalization and decoding failure).

[0038] As described herein, a multi-TRP UE may measure sidelink interference from one or more signals (e.g., from a first UE and / or a second UE) and determine whether to combine the signals based on an interference threshold. In some cases, a multi-TRP UE may receive signals on multiple TRPs, which may be located at different locations at the multi-TRP UE. The multi-TRP UE may measure sidelink interference for each signal based on receiving an interference measurement configuration. The sidelink interference may be based on one or more IMRs allocated in the interference measurement configuration. In some cases, the multi-TRP UE may determine whether the sidelink interference measurement for each signal is less than or equal to an interference threshold. If one or more of the sidelink interference measurements is greater than the interference threshold, the multi-TRP UE may determine not to combine the signals. Otherwise, if each sidelink interference measurement is below the threshold, the multi-TRP UE may combine the signals. In some cases, a multi-TRP may have more than two TRPs, and if the sidelink interference measurement is below the threshold for each TRP in a subset of the TRPs, the signals on the subset may be combined. In some cases, a multi-TRP UE may perform an interference cancellation process based on a determination not to combine signals.

[0039] The UE may configure an IMR and send the configuration to a multi-TRP UE based on one or more triggers. For example, the UE may identify the presence of a multi-TRP UE (e.g., based on communicating with the multi-TRP or based on other evidence that the multi-TRP is nearby), may determine that the communication network is highly congested, or both. The UE may send an interference measurement configuration in a sidelink control information message indicating resources allocated for one or more sidelink interference measurements based on communicating with the multi-TRP UE, determining that the communication network is highly congested, or both.

[0040] Various aspects of the present disclosure are first described in the context of a wireless communication system. Various aspects of the present disclosure are further described in the context of a process flow. Various aspects of the present disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow diagrams relating to sidelink reception with multiple TRPs.

[0041] Figure 1 An example of a wireless communication system 100 supporting sidelink reception with multiple TRPs in accordance with aspects of the present disclosure is shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, or communication with low-cost and low-complexity devices, or any combination thereof.

[0042] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100 and may be devices of varying forms or capabilities. Base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which UEs 115 and base stations 105 may establish one or more communication links 125. Coverage areas 110 may be examples of geographic areas over which base stations 105 and UEs 115 may support transmission of signals according to one or more radio access technologies.

[0043] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, mobile, or both at different times. The UEs 115 may be devices of different forms or with different capabilities. Figure 11. Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein are capable of communicating with various types of devices, such as other UEs 115, base stations 105, or network devices (e.g., core network nodes, relays, integrated access and backhaul (IAB) nodes, or other network devices), such as Figure 1 shown.

[0044] The base stations 105 can communicate with the core network 130, or communicate with each other, or perform both operations described above. For example, the base stations 105 can interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 can communicate with each other directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130) on the backhaul links 120 (e.g., via X2, Xn, or other interfaces), or perform both operations described above. In some examples, the backhaul links 120 can be or include one or more wireless links.

[0045] One or more of the base stations 105 described herein may include or may be referred to by those skilled in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a Home Node B, a Home evolved Node B, or some other appropriate terminology.

[0046] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other appropriate terminology, where a "device" may also be referred to as a unit, a station, a terminal, or a client, among other examples. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, among other examples, which may be implemented in various items such as appliances, vehicles, meters, and other examples.

[0047] The UE 115 described herein is capable of communicating with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as base stations 105 and network equipment, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, such as Figure 1 shown.

[0048] The UE 115 and the base station 105 can communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a collection of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier used for the communication link 125 can include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel can carry acquisition signaling (e.g., synchronization signals, system information), control signaling to coordinate operation for the carrier, user data, or other signaling. The wireless communication system 100 can support communication with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers.

[0049] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling that coordinates operations with respect to other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be placed according to a channel grid for discovery by a UE 115. A carrier may operate in a standalone mode, where the UE 115 performs initial acquisition and connection via the carrier, or a carrier may operate in a non-standalone mode, where a different carrier (e.g., of the same or different radio access technology) is used to anchor the connection.

[0050] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0051] A carrier may be associated with a particular bandwidth of radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a number of determined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). A device of the wireless communication system 100 (e.g., a base station 105, a UE 115, or both) may have a hardware configuration that supports communication on a particular carrier bandwidth, or may be configurable to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a subband, a BWP) or all of the carrier bandwidth.

[0052] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may comprise one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements received by the UE 115 and the higher the order of the modulation scheme, the higher the data rate for the UE 115 may be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communications with the UE 115.

[0053] One or more numerologies for a carrier may be supported, where the numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications for the UE 115 may be limited to the one or more active BWPs.

[0054] The basic time unit (which may be referred to as T s =1 / (Δf max ·N f ) seconds sampling period, where Δf maxIt can represent the maximum supported subcarrier spacing, and N f The time intervals for the base station 105 or the UE 115 may be expressed as multiples of a maximum supported discrete Fourier transform (DFT) size. The time intervals of the communication resources may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0055] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of symbol periods (e.g., depending on the length of a cyclic prefix added in front of each symbol period). In some wireless communication systems 100, a time slot may be further divided into a plurality of mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0056] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in the form of bursts of shortened TTIs (sTTIs)).

[0057] Physical channels may be multiplexed on a carrier according to various techniques. For example, physical control channels and physical data channels may be multiplexed on a downlink carrier using one or more of time division multiplexing (TDM), frequency division multiplexing (FDM), or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a number of symbol periods and may extend across the system bandwidth of a carrier or a subset of the system bandwidth. One or more control regions (e.g., CORESETs) may be configured for a group of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates at one or more aggregation levels arranged in a cascaded manner. The aggregation level for the control channel candidates may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with the coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0058] Each base station 105 can provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots or other types of cells, or any combination thereof). The term "cell" can refer to a logical communication entity used to communicate with the base station 105 (e.g., on a carrier) and can be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other identifier) ​​used to distinguish between adjacent cells. In some examples, a cell can also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which the logical communication entity operates. Depending on various factors (such as the capabilities of the base station 105), the scope of such a cell can range from a smaller area (e.g., a structure, a subset of a structure) to a larger area. For example, a cell can be or include a building, a subset of a building, or an external space between or overlapping the geographic coverage area 110, as well as other examples.

[0059] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs 115 that have a service subscription with a network provider that supports the macro cell. Small cells may be associated with lower-power base stations 105 than macro cells, and may operate in the same or different frequency bands (e.g., licensed, unlicensed) as the macro cells. Small cells may provide unrestricted access to UEs 115 that have a service subscription with a network provider, or may provide restricted access to UEs 115 associated with the small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users in a home or office). A base station 105 may support one or more cells and may also support communication over one or more cells using one or more component carriers.

[0060] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0061] In some examples, base station 105 can be mobile and, therefore, provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies can overlap, but the different geographic coverage areas 110 can be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies can be supported by different base stations 105. The wireless communication system 100 can include, for example, a heterogeneous network in which different types of base stations 105 use the same or different radio access technologies to provide coverage for various geographic coverage areas 110.

[0062] The wireless communication system 100 can support synchronous or asynchronous operation. For synchronous operation, the base stations 105 can have similar frame timing, and transmissions from different base stations 105 can be approximately aligned in time. For asynchronous operation, the base stations 105 can have different frame timing, and in some examples, transmissions from different base stations 105 may not be aligned in time. The techniques described herein can be used for either synchronous or asynchronous operation.

[0063] Some UEs 115 (e.g., MTC or IoT devices) may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or base station 105 without human intervention. In some examples, M2M communication or MTC may include communications from devices that incorporate sensors or meters to measure or capture information and relay such information to a central server or application that utilizes the information or presents it to a human interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other equipment. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, climate and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based service billing.

[0064] Some UEs 115 may be configured to employ a mode of operation that reduces power consumption, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception rather than simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power conservation techniques for UE 115 include entering a power-saving deep sleep mode when not engaged in active communications, when operating over a limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0065] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication and can be supported by one or more mission-critical services such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably in this article.

[0066] In some examples, UE 115 can communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication can be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group can be outside the geographic coverage area 110 of the base station 105 or otherwise unable to receive transmissions from the base station 105. In some examples, groups of UEs 115 communicating via D2D communication can utilize a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates the scheduling of resources for the D2D communication. In other cases, the D2D communication is performed between the UEs 115 without involving the base station 105.

[0067] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination thereof. The vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, the vehicles in the V2X system can communicate with roadside infrastructure (such as roadside units) or communicate with the network via one or more network nodes (e.g., base station 105) using vehicle-to-network (V2N) communication, or both.

[0068] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function unit (AMF)) that manages access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function unit (UPF)) that routes packets to or interconnects with external networks. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UEs 115 served by base stations 105 associated with the core network 130. User IP packets may be transmitted through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to IP services 150 for one or more network operators. IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0069] Some of the network devices (e.g., base stations 105) may include subcomponents such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with the UE 115 through one or more other access network transport entities 145 (which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs)). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., base station 105).

[0070] The wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves can be blocked or redirected by buildings and environmental features, but the waves can penetrate structures sufficiently for macro cells to provide service to UEs 115 located indoors. Transmissions using UHF waves can be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using the lower frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0071] The wireless communication system 100 may also operate in the super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz (also referred to as centimeter bands) or in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also referred to as millimeter bands). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices may be even smaller and more closely spaced than the UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may suffer from even greater atmospheric attenuation and shorter distances than SHF or UHF transmissions. The technology disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may differ depending on the country or regulatory agency.

[0072] The wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 can employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band (such as the 5 GHz industrial, scientific, and medical (ISM) band). When operating in an unlicensed radio frequency spectrum band, devices (such as base stations 105 and UEs 115) can employ carrier sensing for conflict detection and avoidance. In some examples, operations in the unlicensed band can be based on a carrier aggregation configuration in combination with component carriers operating in a licensed band (e.g., LAA). Operations in the unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0073] The base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels (which may support MIMO operations or transmit or receive beamforming). For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array having a number of rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0074] The base station 105 or UE 115 can use MIMO communication to take advantage of multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such a technique may be referred to as spatial multiplexing. For example, a transmitting device may send multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device may receive multiple signals via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO) (where multiple spatial layers are sent to the same receiving device) and multi-user MIMO (MU-MIMO) (where multiple spatial layers are sent to multiple devices).

[0075] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to form or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating at a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements can include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to the signals carried via the antenna elements associated with the device. Adjustments associated with each of the antenna elements can be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0076] As part of the beamforming operation, the base station 105 or the UE 115 can use beam scanning techniques. For example, the base station 105 can use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. The base station 105 can transmit some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) multiple times in different directions. For example, the base station 105 can transmit signals according to different sets of beamforming weights associated with different transmission directions. The transmissions in different beam directions can be used (e.g., by a transmitting device (such as the base station 105) or by a receiving device (such as the UE 115)) to identify the beam direction for subsequent transmission or reception by the base station 105.

[0077] Base station 105 may transmit some signals (e.g., data signals associated with a particular receiving device (e.g., UE 115)) in a single beam direction (e.g., a direction associated with the receiving device). In some examples, the beam direction associated with transmissions along the single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more of the signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 having the highest signal quality or otherwise acceptable signal quality.

[0078] In some examples, transmissions by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights used for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may send reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may be precoded or not precoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals sent by base station 105 in one or more directions, UE 115 may employ similar techniques to send signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to send signals in a single direction (e.g., to send data to a receiving device).

[0079] When receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from the base station 105, a receiving device (e.g., UE 115) can try multiple reception configurations (e.g., directional listening). For example, the receiving device can try multiple reception directions by receiving via different antenna subarrays, by processing the received signals according to different antenna subarrays, by receiving according to different sets of receive beamforming weights applied to the signals received at multiple antenna elements of the antenna array (e.g., different sets of directional listening weights), or by processing the received signals according to different sets of receive beamforming weights applied to the signals received at multiple antenna elements of the antenna array (any of the above operations can be referred to as "listening" according to different reception configurations or reception directions). In some examples, the receiving device can use a single reception configuration to receive along a single beam direction (e.g., when receiving data signals). A single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening according to multiple beam directions).

[0080] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communications at the bearer or packet data convergence protocol (PDCP) layer can be IP-based. The radio link control (RLC) layer can perform packet segmentation and reassembly for transmission on logical channels. The medium access control (MAC) layer can perform priority handling and multiplexing of logical channels to transport channels. The MAC layer can also use error detection technology, error correction technology, or both to support retransmission at the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration, and maintenance of an RRC connection (which supports radio bearers for user plane data) between the UE 115 and the base station 105 or the core network 130. At the physical layer, transport channels can be mapped to physical channels.

[0081] UE 115 and base station 105 can support retransmission of data to increase the likelihood that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood that data is correctly received on communication link 125. HARQ can include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve throughput at the MAC layer under poor radio conditions (e.g., low signal to noise conditions). In some examples, a device can support same-slot HARQ feedback, wherein the device can provide HARQ feedback in a particular time slot for data received in previous symbols in that time slot. In other cases, the device can provide HARQ feedback in subsequent time slots or according to some other time interval.

[0082] In some examples, the wireless communication system 100 can support sidelink communications (e.g., communications within a group of UEs 115). For example, the wireless communication system 100 can be an example of a V2X communication system or include aspects of a V2X communication system (e.g., the UE 115 can be an example of a vehicle, a vulnerable road user (VRU), or other wireless device). In some examples, the UE 115 can include one or more TRPs. For example, the UE 115 can be an example of a vehicle with a single TRP, or the UE 115 can be an example of a vehicle with multiple TRPs (e.g., two TRPs located at the front and rear of the vehicle, although any number or location of TRPs can be used).

[0083] In some cases, a multi-TRP UE 115 may receive one or more signals from a first UE 115, a second UE 115, or both that may not be visible to each other due to obstructions. As a result, the transmissions from the first UE 115 and the second UE 115 may include non-orthogonal reference signals or IMRs. In some examples, the multi-TRP UE 115 may have the ability to combine signals across TRPs or process the signals separately. However, the multi-TRP UE 115 may not have enough information to determine whether to process the signals in combination or separately, which may result in relatively poor channel estimates at the multi-TRP UE 115 (e.g., a noisy channel may result in incorrect equalization and decoding failures).

[0084] In some examples, the multi-TRP UE 115 may perform sidelink interference measurements on one or more signals to determine whether to process the signals in combination or separately. For example, the multi-TRP UE 115 may receive sidelink control information including an interference measurement configuration that indicates resources allocated for sidelink interference measurements across multiple TRPs. For example, the sidelink control information may include an indication of zero-power IMRs. In some cases, the multi-TRP UE 115 may decode the sidelink control information including the interference measurement configuration. Subsequently, the multi-TRP UE 115 may receive one or more signals from the first UE 115, the second UE 115, or both. The multi-TRP UE 115 may perform sidelink interference measurements (e.g., on resources) on each signal based on the interference measurement configuration.

[0085] In some cases, multi-TRP UE 115 may determine whether to process signals across TRPs in combination or separately based on sidelink interference measurements. For example, for each signal having a value less than or equal to a threshold interference, multi-TRP UE 115 may combine the signals based on the sidelink interference measurements. In some other examples, multi-TRP UE 115 may process the signals separately based on at least one sidelink interference measurement having a value greater than the threshold interference.

[0086] Figure 2 An example of a wireless communication system 200 that supports sidelink reception with multiple TRPs according to aspects of the present disclosure is shown. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100 and can include UEs 115-a to 115-c, which can be as described with reference to FIG. Figure 1 1. For example, UE 115 may be an example of a wireless device (e.g., a vehicle, a mobile device, a VRU, etc.) and may communicate using sidelink communication link 205. In some examples, UE 115 (such as UE 115-a) may measure sidelink interference from one or more signals (e.g., from UE 115-b to UE 115-e) and may determine whether to combine the signals based on an interference threshold.

[0087] In some cases, UE 115-a may be an example of a multi-TRP UE 115. That is, UE 115-a may include a first TRP 210-a and a second TRP 210-b, but it should be understood that any number of TRPs 210 may be implemented by UE 115 (e.g., a larger vehicle such as a truck or trailer may have relatively more TRPs). TRP 210 may be configured to receive and transmit signals. TRP 210-a and TRP 210-b may be configured to transmit signals in conjunction with each other, separately (e.g., separately from each other), or both. In some cases, a multi-TRP UE 115 (such as UE 115-a) may receive signals directionally, which may allow for spatial division multiplexing (SDM) of broadcast signals, multicast signals, unicast signals, or a combination thereof.

[0088] Such TRP 210 may include, but is not limited to, antennas, antenna panels, and the like. For example, TRP 210-a and TRP 210-b may include different radio frequency modules with shared hardware controllers, software controllers, or both. In some cases, in a first multi-TRP UE 115, the first TRP 210 and the second TRP 210 may present separate radio frequency (RF) modules and separate baseband components, but may share common processing in the physical layer, MAC layer, RLC layer, PDCP layer, RRC layer, or any combination thereof. In some other cases, in a second multi-TRP UE 115, the first TRP 210 and the second TRP 210 may present separate RF modules, separate baseband components, and separate processing in the physical layer, MAC layer, RLC layer, PDCP layer, or any combination thereof, such that the first TRP and the second TRP share common processing resources in the RRC layer.

[0089] In some cases, the TRPs 210 of a UE 115-a may be located relatively close to one another. In some other cases, the TRPs 210 of a UE 115-a may be physically separated from one another by a certain distance. For example, in the context of a vehicle, TRP 210-a may be located at or near the rear of the vehicle, while TRP 210-b may be located at or near the front of the vehicle. In this example, TRP 210-a (e.g., a first antenna panel) and TRP 210-b (e.g., a second antenna panel) may be separated from one another by several meters. In the case of a larger UE 115 (such as a semi-truck), this physical separation may be even greater, where multiple TRPs 210 may be physically separated from one another by 20 meters or more.

[0090] Due to the separate components, physical location, and physical separation between TRP 210-a and TRP 210-b, each of the respective TRPs 210 may view the channel differently. For example, TRP 210-a may receive signals from UE 115-b via sidelink communication link 205-a, and TRP 210-b may receive signals from UE 115-b via sidelink communication link 205-b. The signal received at TRP 210-a may travel a greater distance than the signal received at TRP 210-b. The varying propagation distances may result in varying parameters (e.g., characteristics) associated with the signals received by the respective TRPs 210. For example, due to the difference in propagation distance, the signal received at TRP 210-a may exhibit lower signal quality (e.g., lower received signal strength indicator (RSSI), lower reference signal received power (RSRP), lower reference signal received quality (RSRQ), higher SNR, higher SINR) than the signal received at TRP 210-b. In addition, the signal received at TRP 210-a may be received later in time than the signal received at TRP 210-b. These differences in signal parameters (e.g., RSRP, RSRQ, SNR, SINR, reception time) may occur even though UE 115-b transmits the corresponding signals at the same time and with the same transmit power.

[0091] Physical obstacles, weather conditions, noise, line of sight (LoS) versus non-line of sight (NLoS), and other conditions may further increase the difference between the signals sent by respective TRPs 210, the difference between the signals received at respective TRPs, or both. For example, UE 115-c may send a signal to TRP 210-a via sidelink communication link 205-c and may send a signal to TRP 210-b via sidelink communication link 205-d. In this example, TRP 210-a may effectively receive the signal. However, the signal sent to TRP 210-b may be deflected, blocked, or otherwise interfered with by obstacle 215 (such as a truck). In this example, no signal may be received from UE 115-c at TRP 210-b because sidelink communication link 205-d may be blocked by obstacle 215. Additionally or alternatively, the signal received at TRP 210-b may suffer from low signal quality compared to the signal received by TRP 210-a.

[0092] Additionally or alternatively, communications in the wireless communication system 200 may result in interference. For example, multiple UEs 115 may send transmissions via overlapping time-frequency resources, which may result in collisions between the transmissions and degrade the signal quality of the communications. As an illustrative example, UE 115-b and UE 115-c may send overlapping transmissions to UE 115-a. For example, communications sent on link 205-a may interfere with communications sent on link 205-c, resulting in interference at TRP 210-a. UE 115-a may not be able to successfully decode the transmissions. For example, the transmissions may include non-orthogonal reference signals (e.g., demodulation reference signals (DMRS), channel state information (CSI) reference signals (RS), etc.), or may use the same interference management resources, which may result in relatively poor channel estimates (e.g., a noisy channel may result in incorrect equalization and decoding failure at UE 115-a).

[0093] In some cases, UE 115-a may receive an indication of an interference measurement configuration (e.g., from UE 115-b, UE 115-c, or both) indicating resources allocated for sidelink interference measurements, such as one or more IMRs. UE 115-a may use TRP 210-a and TRP 210-b to receive one or more signals, such as a broadcast signal, a multicast signal, or both, from UE 115-b, UE 115-c, or both. In some examples, UE 115-a may measure sidelink interference for one or more signals on the IMRs. In some examples, UE 115-a may compare the sidelink interference measurement for each signal to a threshold interference. If at least one of the sidelink interference measurements is greater than the interference threshold, UE 115-a may separately decode the signals that span TRP 210-a and TRP 210-b. If the sidelink interference measurement is less than or equal to the interference threshold, UE 115-a may decode the signals on TRP 210-a and TRP 210-b in combination.

[0094] Figure 3 An example of a wireless communication system 300 that supports sidelink reception with multiple TRPs in accordance with aspects of the present disclosure is shown. In some examples, the wireless communication system 300 can implement aspects of the wireless communication system 100, the wireless communication system 200, or both, and can include UEs 115-d through 115-f, which can be as described with reference to FIG. Figure 1 and 21. An example of a UE 115 is described. For example, UE 115 may be an example of a wireless device (e.g., a vehicle, a mobile device, a VRU, etc.) and may communicate using sidelink communication link 305. For example, UE 115-e and UE 115-f may send sidelink signaling (e.g., sidelink control information or data) to UE 115-d via sidelink communication link 305-a and over sidelink communication link 305-c. In some examples, UE 115 (such as UE 115-d) may measure sidelink interference from one or more signals (e.g., from UE 115-e and / or UE 115-f) and may determine whether to combine the signals based on an interference threshold.

[0095] In some cases, UE 115-d may be an example of a multi-TRP UE 115. For example, UE 115-d may have multiple TRPs for transmitting and receiving signals 310 (e.g., broadcast signals, multicast signals, or both), as described with reference to FIG. Figure 2 described. In some cases, UE 115-d may receive one or more signals 310 from UE 115-e, UE 115-f, or both, and UE 115-e, UE 115-f may not be visible to each other due to an obstacle 315 blocking the sidelink communication link 305-d. Therefore, the transmissions from UE 115-e and UE 115-f may include non-orthogonal reference signals or IMRs, or may otherwise cause interference at UE 115-d. In some examples, UE 115-d may have the ability to combine signals 310 across TRPs or process signals 310 separately. However, the multi-TRP UE 115 may not have enough information to determine whether to process the signals 310 in combination or separately, which may result in relatively poor channel estimates at the multi-TRP UE 115 (e.g., a noisy channel may result in incorrect equalization and decoding failures).

[0096] In some examples, UE 115-d may receive signal 310-a from UE 115-e on LoS sidelink communication link 305-a and sidelink communication link 305-b, and receive signal 310-b from UE 115-f on LoS sidelink communication link 305-c. UE 115-d may use the TRP on the rear panel to receive signal 310-a on sidelink communication link 305-a, and may use the TRP on the front panel to receive signal 310-a on sidelink communication link 305-b and signal 310-b on sidelink communication link 305-c. Combined processing of signal 310-a received on sidelink communication link 305-a and sidelink communication link 305-b may degrade performance at UE 115-d by increasing the chance of pilot contamination and decoding failure (e.g., because there is a 25% probability that the DMRS pattern is non-orthogonal). Thus, it may be beneficial for UE 115-d to determine whether to decode signal 310 with or without combining signal 310 on one or more TRPs (e.g., on a subset of the TRPs in the case of more than two TRPs).

[0097] In some cases, such as for connectionless services (e.g., when a dedicated communication link is not established between UEs 115), multi-TRP UEs 115 may perform sidelink interference measurements on one or more signals 310 to determine whether to process the signals 310 in combination or separately. For example, UE 115-d may receive sidelink control information 320 from UE 115-e, UE 115-f, or both. Sidelink control information 320 may include an interference measurement configuration that indicates resources allocated for sidelink interference measurements across multiple TRPs. For example, sidelink control information 320 may include an indication of zero-power IMRs. The interference measurement configuration may be sent in a sidelink control channel, a sidelink shared channel, or both. In some cases, UE 115-d may receive sidelink control information 320-a from UE 115-e on sidelink communication link 305-a, sidelink control information 320-b from UE 115-f on sidelink communication link 305-c, or both. In some examples, UE 115 may send sidelink control information 320 via LoS sidelink communication link 305, NLoS sidelink communication link 305, or both.

[0098] In some examples, the interference measurement configuration may include an index of a resource pattern (e.g., an IMR pattern) for a configured set of resource patterns. UE 115-d may determine which IMRs to use based on the resource pattern used for the index. In some other examples, UE 115-d may determine the resource pattern based on a formula or one or more numerical operations. For example, UE 115-d may determine one or more IMRs to use based on a UE identifier of a transmitting UE 115 (e.g., UE 115-e, UE 115-f, or both), a broadcast type (e.g., broadcast, multicast, etc.), one or more selected resources, etc. The transmitting UE 115 may indicate IMR transmission by including a one-bit indicator in the sidelink control information 320. The resource pattern may specify one or more resources that may correspond to orthogonal reference signals for multiple UEs 115.

[0099] In some cases, UE 115-d may determine resources for sidelink interference measurement based on randomly punctured resources. For example, the transmitting UE 115 may randomly puncture multiple resource elements and indicate the resource elements in the sidelink control information 320 (e.g., as a bitmap). In some cases, a subchannel may have multiple resource blocks, such as 10 resource blocks. The transmitting UE 115 may include multiple resource blocks spanning a symbol (e.g., 2 resource blocks spanning 3 symbols). The transmitting UE 115 may select resource blocks in which to puncture subcarriers (e.g., 2 resource blocks may be selected as mod(UE identifier, 5) and IMRs may be sent on selected resource blocks such as 2 and 7). Each resource block may have 12 subcarriers, which may mean that the chance of a colliding IMR is relatively small (e.g., 1 / 30). In some examples, the transmitting UE 115 may perform symbol offsetting or may employ other techniques to reduce the probability of IMR collisions.

[0100] In some cases, UE 115-d may decode sidelink control information 320 including an interference measurement configuration. For example, UE 115-d may decode sidelink control information 320-a from UE 115-e and sidelink control information 320-b from UE 115-f. UE 115-d may then receive signal 310-a from UE 115-e, signal 310-b from UE 115-f, or both. In some examples, signal 310 (e.g., signal 310-a, signal 310-b, or both) may be a DMRS. UE 115-d may determine the location of signal 310 and an IMR based on sidelink control information 320. UE 115-d may perform sidelink interference measurements at 325 on each signal 310 received on a different sidelink communication link 305. For example, for each TRP, UE 115-d may measure received signal strength (e.g., RSSI) on one or more IMR resources indicated in sidelink control information 320-a, sidelink control information 320-b, or both.

[0101] In some cases, UE 115-d may determine whether to process each signal 310 received on different sidelink communication links 305 in combination or separately across TRPs based on the sidelink interference measurement. For example, UE 115-d may combine signals 310 (e.g., signal 310-a received on sidelink communication link 305-a, signal 310-a received on sidelink communication link 305-b, signal 310-b received on sidelink communication link 305-c, or a combination) based on the sidelink interference measurement for each signal 310 received on different sidelink communication links 305 having a value less than or equal to a threshold interference at 325. In some examples, when UE 115-d has more than two TRPs, UE 115-d may combine across a set of TRPs when the sidelink interference measurement is less than the threshold interference.

[0102] In some other examples, UE 115-d may separately process signal 310 (e.g., signal 310-a received on sidelink communication link 305-a, signal 310-a received on sidelink communication link 305-b, signal 310-b received on sidelink communication link 305-c, or a combination) based on at least one sidelink interference measurement having a value greater than a threshold interference. For example, UE 115-d may separately process signal 310 if an energy per resource element (EPRE) value, an RSSI value, or both of at least one signal 310 received on sidelink communication link 305 is greater than a threshold.

[0103] In some cases, UE 115d may perform interference cancellation operations based on determining that signals 310 (e.g., the DMRS pattern for signal 310) are non-orthogonal. UE 115-d may use sidelink interference measurements on the IMR (such as RSSI values, EPRE values, or both) as offsets in the interference cancellation operations.

[0104] In some cases, UE 115-e and UE 115-f may determine to send sidelink control information 320-a and sidelink control information 320-b, respectively, including an interference measurement configuration, based on determining that UE 115-d is a multi-TRP UE 115, determining that the wireless communication system 200 is operating in a highly congested network, or both. For example, a transmitting UE 115 (such as UE 115-e, UE 115-f, or both) may determine that the network is congested based on performing a channel busy ratio (CBR) measurement or receiving a CBR measurement from one or more surrounding UEs 115. Additionally or alternatively, the transmitting UE 115 may determine that the network is congested based on frequent retransmissions, a relatively high number of packet failures, etc. In some examples, the transmitting UE 115 may determine that one or more surrounding UEs 115 are multi-TRP UEs 115. For example, the transmitting UE 115 may establish a unicast communication link with the multi-TRP UE 115 based on receiving an RRC indication for the multi-TRP UE 115. In some other examples, the transmitting UE 115 may receive a broadcast transmission, a multicast transmission, or both including an indication of one or more IMRs in the sidelink control information 320. The transmitting UE 115 may infer the presence of multiple TRP UEs 115 based on the transmission including an indication of one or more IMRs.

[0105] Figure 4 An example of a process flow 400 for supporting sidelink reception with multiple TRPs in accordance with aspects of the present disclosure is shown. In some examples, the process flow 400 can implement aspects of the wireless communication system 100, the wireless communication system 200, the wireless communication system 300, or a combination. The process flow 400 can illustrate an example of a UE 115 (such as UE 115-g) measuring sidelink interference from one or more signals (e.g., from UE 115-h) and determining to process the signals in combination based on an interference threshold. The following alternative examples can be implemented in which some of the processes are performed in a different order than described or not performed. In some cases, the processes can include additional functionality not mentioned below, or additional processes can be added.

[0106] At 405, UE 115-h may configure one or more resources allocated for sidelink interference measurements spanning multiple TRPs at UE 115-g.

[0107] At 410, UE 115-h may determine an interference measurement configuration indicating configured resources allocated for sidelink interference measurements. In some examples, UE 115-h may send the interference measurement configuration based on determining that a network congestion level exceeds a congestion threshold. Additionally or alternatively, UE 115-h may identify the presence of UE 115-g (e.g., UE 115 with multiple TRPs) and may send an indication of the interference measurement configuration based on identifying the presence of UE 115-g. For example, UE 115-h may receive control signaling indicating the capability of UE 115-g with multiple TRPs, may receive control signaling including an indication of additional resources allocated for sidelink interference measurements, or both.

[0108] At 415, UE 115-g may receive an indication of an interference measurement configuration from UE 115-h. The interference measurement configuration may indicate one or more resources allocated for sidelink interference measurement of one or more signals across multiple TRPs. For example, UE 115-g may receive sidelink control information from UE 115-h indicating the interference measurement configuration. In some examples, the one or more resources allocated for sidelink interference measurement may be zero-power IMRs.

[0109] At 420 and 425, UE 115-g may receive a first signal from UE 115-h using a first TRP and a second signal from UE 115-h using a second TRP. In some examples, the first signal and the second signal are part of a broadcast transmission, a multicast transmission, or both from UE 115-h.

[0110] At 430, UE 115-g may determine one or more resources allocated for sidelink interference measurement based on an index indicated by the interference measurement configuration, based on a formula, based on one or more randomly punctured resources, or a combination. For example, UE 115-g may receive an indication of an index in the interference measurement configuration. The index may indicate a resource pattern from a configured set of resource patterns. In some examples, the formula may be a set of numerical operations performed by UE 115-h, UE 115-g, or both to determine the resources allocated for sidelink interference measurement. UE 115-h may include an indication of the determined resources allocated for sidelink interference measurement in the interference measurement configuration. In some other examples, UE 115-g may receive an indication of a bitmap of resources for randomly punctured resources in the interference measurement configuration. UE 115-g may identify the resources allocated for sidelink interference measurement based on the bitmap.

[0111] At 435, the UE 115-g may measure sidelink interference for the first signal and sidelink interference for the second signal based on the interference measurement configuration. For example, the UE 115-g may measure received signal strength (e.g., RSSI, EPRE, or both) of the first signal and the second signal on resources allocated for sidelink interference measurement.

[0112] At 440, the UE 115-g may compare each sidelink interference from the sidelink interference measurement at 435 to an interference threshold. For example, at 445, the UE 115-g may determine that each sidelink interference measurement (e.g., for the first signal and the second signal) is less than or equal to the interference threshold.

[0113] At 450, UE 115-g may process (e.g., decode) the first signal and the second signal in combination at the first TRP and the second TRP based on determining that each sidelink interference is less than or equal to the interference threshold.

[0114] In some examples, UE 115-g may perform interference cancellation operations based on the measured sidelink interference. For example, UE 115-g may determine that one or more reference signals of the first signal are not orthogonal to one or more reference signals of the second signal. UE 115-g may offset the non-orthogonality between the reference signals based on the sidelink interference measurement.

[0115] Figure 5 An example of a process flow 500 for supporting sidelink reception with multiple TRPs in accordance with aspects of the present disclosure is shown. In some examples, the process flow 500 can implement aspects of the wireless communication system 100, the wireless communication system 200, the wireless communication system 300, or a combination. The process flow 500 can illustrate an example of a UE 115 (such as UE 115-i) measuring sidelink interference from one or more signals (e.g., from UE 115-j) and determining to process the signals in combination based on an interference threshold. The following alternative examples can be implemented in which some of the processes are performed in a different order than described or not performed. In some cases, the processes can include additional functionality not mentioned below, or additional processes can be added.

[0116] At 505, UE 115-j may be configured with one or more resources allocated for sidelink interference measurements spanning multiple TRPs at UE 115-i.

[0117] At 510, UE 115-j may determine an interference measurement configuration to indicate configured resources allocated for sidelink interference measurements. In some examples, UE 115-j may send the interference measurement configuration based on determining that a network congestion level exceeds a congestion threshold. Additionally or alternatively, UE 115-j may identify the presence of UE 115-i (e.g., UE 115 with multiple TRPs) and may send an indication of the interference measurement configuration based on identifying the presence of UE 115-i. For example, UE 115-j may receive control signaling indicating the capability of UE 115-i with multiple TRPs, may receive control signaling including an indication of additional resources allocated for sidelink interference measurements, or both.

[0118] At 515, UE 115-i may receive an indication of an interference measurement configuration from UE 115-j. The interference measurement configuration may indicate one or more resources allocated for sidelink interference measurement of one or more signals across multiple TRPs. For example, UE 115-i may receive sidelink control information from UE 115-j indicating the interference measurement configuration. In some examples, the one or more resources allocated for sidelink interference measurement may be zero-power IMRs.

[0119] At 520 and 525, UE 115-i may receive a first signal from UE 115-j using a first TRP and a second signal from UE 115-j using a second TRP. In some examples, the first signal and the second signal are part of a broadcast transmission, a multicast transmission, or both from UE 115-j.

[0120] At 530, UE 115-i may determine one or more resources allocated for sidelink interference measurement based on an index indicated by the interference measurement configuration, based on a formula, based on one or more randomly punctured resources, or a combination. For example, UE 115-i may receive an indication of an index in the interference measurement configuration. The index may indicate a resource pattern from a configured set of resource patterns. In some examples, the formula may be a set of numerical operations performed by UE 115-j, UE 115-i, or both to determine the resources allocated for sidelink interference measurement. UE 115-j may include an indication of the determined resources allocated for sidelink interference measurement in the interference measurement configuration. In some other examples, UE 115-i may receive an indication of a bitmap of resources for random puncturing in the interference measurement configuration. UE 115-i may identify the resources allocated for sidelink interference measurement based on the bitmap.

[0121] At 535, UE 115-i may measure sidelink interference for the first signal and sidelink interference for the second signal based on the interference measurement configuration. For example, UE 115-i may measure received signal strength (e.g., RSSI, EPRE, or both) of the first signal and the second signal on resources allocated for sidelink interference measurement.

[0122] At 550, UE 115-i may compare each sidelink interference measurement from the sidelink interference measurement at 535 to an interference threshold. For example, at 555, UE 115-i may determine that at least one sidelink interference measurement (e.g., for the first signal and the second signal) is greater than the interference threshold.

[0123] At 550, UE 115-i may separately process (e.g., decode) the first signal and the second signal across the first TRP and the second TRP based on determining that at least one sidelink interference is greater than an interference threshold.

[0124] In some examples, UE 115-i can perform interference cancellation operations based on the measured sidelink interference. For example, UE 115-i can determine that one or more reference signals of the first signal are not orthogonal to one or more reference signals of the second signal. UE 115-i can offset the non-orthogonality between the reference signals based on the sidelink interference measurement.

[0125] Figure 6 A block diagram 600 of a device 605 supporting sidelink reception with multiple TRPs according to aspects of the present disclosure is shown. The device 605 can be an example of aspects of the UE 115 as described herein. The device 605 can include a receiver 610, a communication manager 615, and a transmitter 620. The device 605 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0126] The receiver 610 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to sidelink reception with multiple TRPs, etc.). The information may be passed to other components of the device 605. The receiver 610 may be a reference Figure 9 Examples of aspects of the transceiver 920 are described. The receiver 610 may utilize a single antenna or a group of antennas.

[0127] The communication manager 615 may perform the following operations: receive an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across multiple TRPs; receive a first signal from a second UE using a first TRP of a first UE, and receive a second signal from the second UE using a second TRP of the first UE; measure first sidelink interference for the first signal and second sidelink interference for the second signal based on the interference measurement configuration; compare the first sidelink interference and the second sidelink interference with a sidelink interference threshold; and process the first signal and the second signal in combination on the first TRP and the second TRP or separately across the first TRP and the second TRP based on the comparison. The communication manager 615 may also perform the following operations: configure resources allocated for sidelink interference measurement across multiple TRPs; determine an interference measurement configuration indicating the configured resources allocated for sidelink interference measurement across multiple TRPs; and send an indication of the interference measurement configuration. The communication manager 615 may be an example of aspects of the communication manager 910 described herein.

[0128] The actions performed by the communication manager 615 as described herein may be implemented to achieve one or more potential advantages. One implementation may enable a multi-TRP UE to measure sidelink interference from one or more signals based on an interference measurement configuration. The interference measurement configuration may enable the UE to determine whether to process the signals in combination or separately based on an interference threshold, which may improve communication latency (e.g., related to signaling or data retransmission at the multi-TRP UE), among other advantages.

[0129] Based on implementing the interference measurement configuration as described herein, a processor of the UE (e.g., a processor controlling the receiver 610, the communication manager 615, the transmitter 620, or a combination thereof) can reduce the impact or likelihood of inefficient communication caused by the UE combining one or more signals with interference measurements above a threshold. For example, the UE can measure sidelink interference using one or more resources allocated for interference measurement and determine whether to process the signals in combination or separately, which can achieve improved resource allocation at the UE and other benefits.

[0130] The communication manager 615 or its subcomponents may be implemented in hardware, in code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 615 or its subcomponents may be performed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described in this disclosure.

[0131] The communication manager 615 or its subcomponents can be physically located at various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 615 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 615 or its subcomponents can be combined with one or more other hardware components (including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0132] The transmitter 620 may transmit signals generated by other components of the device 605. In some examples, the transmitter 620 may be co-located with the receiver 610 in a transceiver module. For example, the transmitter 620 may be a reference Figure 9 Examples of aspects of the transceiver 920 are described. The transmitter 620 may utilize a single antenna or a group of antennas.

[0133] Figure 7 A block diagram 700 of a device 705 supporting sidelink reception with multiple TRPs according to aspects of the present disclosure is shown. The device 705 can be an example of aspects of the device 605 or UE 115 as described herein. The device 705 can include a receiver 710, a communication manager 715, and a transmitter 745. The device 705 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0134] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to sidelink reception with multiple TRPs, etc.). The information may be passed to other components of the device 705. The receiver 710 may be a reference Figure 9 Examples of aspects of the transceiver 920 are described. The receiver 710 may utilize a single antenna or a group of antennas.

[0135] Communications manager 715 may be an example of aspects of communications manager 615 as described herein. Communications manager 715 may include resource component 720, signaling component 725, sidelink interference component 730, threshold component 735, and TRP component 740. Communications manager 715 may be an example of aspects of communications manager 910 as described herein.

[0136] The resource component 720 can receive an indication of an interference measurement configuration that indicates resources allocated for sidelink interference measurement across multiple TRPs. The signaling component 725 can use the first TRP of the first UE to receive the first signal from the second UE, and use the second TRP of the first UE to receive the second signal from the second UE. The sidelink interference component 730 can measure first sidelink interference for the first signal and second sidelink interference for the second signal based on the interference measurement configuration. The threshold component 735 can compare the first sidelink interference and the second sidelink interference with a sidelink interference threshold. The TRP component 740 can process the first signal and the second signal in combination on the first TRP and the second TRP or separately across the first TRP and the second TRP based on the comparison.

[0137] Resource component 720 can configure resources allocated for sidelink interference measurements across multiple TRPs. TRP component 740 can determine an interference measurement configuration indicating the configured resources allocated for sidelink interference measurements across multiple TRPs. Sidelink interference component 730 can send an indication of the interference measurement configuration.

[0138] The transmitter 745 can transmit signals generated by other components of the device 705. In some examples, the transmitter 745 can be co-located with the receiver 710 in a transceiver module. For example, the transmitter 745 can be a reference Figure 9 Examples of various aspects of the transceiver 920 are described. The transmitter 745 may utilize a single antenna or a group of antennas.

[0139] Figure 8 A block diagram 800 is shown of a communication manager 805 that supports sidelink reception with multiple TRPs in accordance with aspects of the present disclosure. The communication manager 805 can be an example of aspects of the communication manager 615, the communication manager 715, or the communication manager 910 described herein. The communication manager 805 can include a resource component 810, a signaling component 815, a sidelink interference component 820, a threshold component 825, a TRP component 830, and a signal strength component 835. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0140] The resource component 810 can receive an indication of an interference measurement configuration that indicates resources allocated for sidelink interference measurement across multiple TRPs. The signaling component 815 can use a first TRP of the first UE to receive a first signal from the second UE, and use a second TRP of the first UE to receive a second signal from the second UE. The sidelink interference component 820 can measure a first sidelink interference for the first signal and a second sidelink interference for the second signal based on the interference measurement configuration. The threshold component 825 can compare the first sidelink interference and the second sidelink interference with a sidelink interference threshold. The TRP component 830 can process the first signal and the second signal in combination on the first TRP and the second TRP or separately across the first TRP and the second TRP based on the comparison.

[0141] In some examples, resource component 810 can identify resources allocated for sidelink interference measurement based on an index indicated by the interference measurement configuration, where the index indicates a resource pattern from a configured set of resource patterns. In some examples, resource component 810 can determine resources allocated for sidelink interference measurement based on a formula, where the interference measurement configuration indicates that resources allocated for sidelink interference measurement have been allocated. In some examples, resource component 810 can identify resources allocated for sidelink interference measurement as randomly punctured resources based on a bitmap indicated by the interference measurement configuration.

[0142] Signal strength component 835 can receive sidelink control information from the second UE, the sidelink control information including an interference measurement configuration. In some examples, signal strength component 835 can measure received signal strengths of the first signal and the second signal on resources allocated for sidelink interference measurement.

[0143] In some examples, threshold component 825 can determine that the first sidelink interference and the second sidelink interference are less than or equal to a sidelink interference threshold. In some examples, threshold component 825 can decode the first signal and the second signal in combination at the first TRP and the second TRP based on determining that the first sidelink interference and the second sidelink interference are less than or equal to the sidelink interference threshold. In some examples, threshold component 825 can measure the first sidelink interference and the second sidelink interference based on an energy per resource element, a received signal strength indicator, or both corresponding to the first signal and the second signal.

[0144] In some examples, threshold component 825 can determine that the first sidelink interference or the second sidelink interference is greater than a sidelink interference threshold. In some examples, threshold component 825 can decode the first signal and the second signal separately across the first TRP and the second TRP based on determining that the first sidelink interference or the second sidelink interference is greater than the sidelink interference threshold.

[0145] In some examples, sidelink interference component 820 can perform interference cancellation operations based on the first sidelink interference and the second sidelink interference. In some examples, sidelink interference component 820 can determine that one or more reference signals associated with the first signal and one or more reference signals associated with the second signal are not orthogonal. In some examples, sidelink interference component 820 can offset the non-orthogonality between the one or more reference signals associated with the first signal and the one or more reference signals associated with the second signal, where the offset is based on the first sidelink interference and the second sidelink interference.

[0146] In some cases, the first signal and the second signal are associated with a broadcast transmission, a multicast transmission, or any combination.The resources allocated for sidelink interference measurement may include zero power interference measurement resources.

[0147] In some examples, resource component 810 can configure resources allocated for sidelink interference measurements across multiple TRPs. In some examples, TRP component 830 can determine an interference measurement configuration indicating the configured resources allocated for sidelink interference measurements across multiple TRPs. In some examples, sidelink interference component 820 can send an indication of the interference measurement configuration.

[0148] In some examples, resource component 810 can select a resource pattern from a set of configured resource patterns, wherein the interference measurement configuration includes an index indicating the selected resource pattern. In some examples, resource component 810 can determine the configured resources allocated for sidelink interference measurement based on a formula, wherein the interference measurement configuration indicates that the configured resources allocated for sidelink interference measurement have been allocated. In some examples, resource component 810 can puncture one or more resource elements using the configured resources allocated for sidelink measurement, wherein the interference measurement configuration includes a bitmap indicating the configured resources allocated for sidelink measurement.

[0149] In some examples, threshold component 825 can determine that a network congestion level exceeds a congestion threshold, wherein sending an indication of an interference measurement configuration is based on determining that the network congestion level exceeds the congestion threshold. In some examples, TRP component 830 can identify the presence of a UE with a TRP set, wherein sending an indication of an interference measurement configuration is based on identifying the presence of a UE with a TRP set. In some examples, TRP component 830 can receive control signaling indicating the capabilities of the UE with the TRP set. In some examples, TRP component 830 can receive control signaling including an indication of additional resources allocated for sidelink interference measurements.

[0150] Figure 9 A diagram of a system 900 including a device 905 supporting sidelink reception with multiple TRPs in accordance with aspects of the present disclosure is shown. The device 905 can be an example of, or include a component of, the device 605, device 705, or UE 115 as described herein. The device 905 can include components for two-way voice and data communications, including components for sending and receiving communications, including a communications manager 910, an I / O controller 915, a transceiver 920, an antenna 925, a memory 930, and a processor 940. These components can communicate electronically via one or more buses (e.g., bus 945).

[0151] The communication manager 910 may perform the following operations: receiving an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across multiple TRPs; receiving a first signal from a second UE using a first TRP of a first UE, and receiving a second signal from the second UE using a second TRP of the first UE; measuring first sidelink interference for the first signal and second sidelink interference for the second signal based on the interference measurement configuration; comparing the first sidelink interference and the second sidelink interference with a sidelink interference threshold; and processing the first signal and the second signal in combination on the first TRP and the second TRP or separately across the first TRP and the second TRP based on the comparison. The communication manager 910 may also perform the following operations: configuring resources allocated for sidelink interference measurement across multiple TRPs; determining an interference measurement configuration indicating the configured resources allocated for sidelink interference measurement across multiple TRPs; and sending an indication of the interference measurement configuration.

[0152] I / O controller 915 can manage input and output signals for device 905. I / O controller 915 can also manage peripheral devices that are not integrated into device 905. In some cases, I / O controller 915 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 915 can utilize a computer such as , or another known operating system. In other cases, I / O controller 915 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 915 may be implemented as part of a processor. In some cases, a user may interact with device 905 via I / O controller 915 or via hardware components controlled by I / O controller 915.

[0153] The transceiver 920 can communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, the transceiver 920 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 920 can also include a modem for modulating packets and providing the modulated packets to the antenna for transmission, and demodulating packets received from the antenna.

[0154] In some cases, a wireless device may include a single antenna 925. However, in some cases, the device may have more than one antenna 925 that are capable of sending or receiving multiple wireless transmissions simultaneously.

[0155] The memory 930 may include random access memory (RAM) and read-only memory (ROM). The memory 930 may store computer-readable, computer-executable code 935, which includes instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 930 may also contain, among other things, a basic I / O system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0156] The processor 940 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 940 may be configured to operate the memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting sidelink reception with multiple TRPs).

[0157] The code 935 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 935 may be stored in a non-transitory computer-readable medium (e.g., system memory or other types of memory). In some cases, the code 935 may not be directly executable by the processor 940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0158] Figure 10 A flow chart illustrating a method 1000 for supporting sidelink reception with multiple TRPs according to aspects of the present disclosure is shown. The operations of the method 1000 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1000 may be implemented by the UE 115 or components thereof as described herein. Figures 6 to 9In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0159] At 1005, the UE may receive an indication of an interference measurement configuration indicating resources allocated for sidelink interference measurements across multiple TRPs. The operations of 1005 may be performed according to the methods described herein. In some examples, aspects of the operations of 1005 may be as described with reference to Figures 6 to 9 Describes the resource components to execute.

[0160] At 1010, the UE may receive a first signal from a second UE using a first TRP of the first UE and receive a second signal from the second UE using a second TRP of the first UE. The operations of 1010 may be performed according to the methods described herein. In some examples, aspects of the operations of 1010 may be as described with reference to Figures 6 to 9 The signaling components described are used to perform the

[0161] At 1015, the UE may measure a first sidelink interference for the first signal and a second sidelink interference for the second signal based on the interference measurement configuration. The operations of 1015 may be performed according to the methods described herein. In some examples, aspects of the operations of 1015 may be as described with reference to Figures 6 to 9 The sidelink interference component described is performed.

[0162] At 1020, the UE may compare the first sidelink interference and the second sidelink interference to a sidelink interference threshold. The operations of 1020 may be performed according to the methods described herein. In some examples, aspects of the operations of 1020 may be as described with reference to Figures 6 to 9 This is performed using the threshold component described in

[15] .

[0163] At 1025, the UE may process the first signal and the second signal in combination on the first TRP and the second TRP or process the first signal and the second signal separately across the first TRP and the second TRP based on the comparison. The operations of 1025 may be performed according to the methods described herein. In some examples, aspects of the operations of 1025 may be as described with reference to Figures 6 to 9 The TRP components described are executed.

[0164] Figure 11 A flow chart illustrating a method 1100 for supporting sidelink reception with multiple TRPs according to aspects of the present disclosure is shown. The operations of the method 1100 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1100 may be implemented by the UE 115 or components thereof as described herein. Figures 6 to 9In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0165] At 1105, the UE may receive an indication of an interference measurement configuration indicating resources allocated for sidelink interference measurements across multiple TRPs. The operations of 1105 may be performed according to the methods described herein. In some examples, aspects of the operations of 1105 may be as described with reference to Figures 6 to 9 Describes the resource components to execute.

[0166] At 1110, the UE may identify resources allocated for sidelink interference measurement based on an index indicated by the interference measurement configuration, wherein the index indicates a resource pattern from a configured set of resource patterns. The operations of 1110 may be performed according to the methods described herein. In some examples, aspects of the operations of 1110 may be as described with reference to Figures 6 to 9 Describes the resource components to execute.

[0167] At 1115, the UE may receive a first signal from a second UE using a first TRP of the first UE and receive a second signal from the second UE using a second TRP of the first UE. The operations of 1115 may be performed according to the methods described herein. In some examples, aspects of the operations of 1115 may be as described with reference to Figures 6 to 9 The signaling components described are used to perform the

[0168] At 1120, the UE may measure a first sidelink interference for the first signal and a second sidelink interference for the second signal based on the interference measurement configuration. The operations of 1120 may be performed according to the methods described herein. In some examples, aspects of the operations of 1120 may be as described with reference to Figures 6 to 9 The sidelink interference component described is performed.

[0169] At 1125, the UE may compare the first sidelink interference and the second sidelink interference to a sidelink interference threshold. The operations of 1125 may be performed according to the methods described herein. In some examples, aspects of the operations of 1125 may be as described with reference to Figures 6 to 9 This is performed using the threshold component described in

[15] .

[0170] At 1130, the UE may process the first signal and the second signal in combination on the first TRP and the second TRP based on the comparison or process the first signal and the second signal separately across the first TRP and the second TRP. The operations of 1130 may be performed according to the methods described herein. In some examples, aspects of the operations of 1130 may be as described with reference to Figures 6 to 9 The TRP components described are executed.

[0171] Figure 12 A flow chart illustrating a method 1200 for supporting sidelink reception with multiple TRPs according to aspects of the present disclosure is shown. The operations of the method 1200 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1200 may be implemented by the UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0172] At 1205, the UE may receive an indication of an interference measurement configuration indicating resources allocated for sidelink interference measurements across multiple TRPs. The operations of 1205 may be performed according to the methods described herein. In some examples, aspects of the operations of 1205 may be as described with reference to Figures 6 to 9 Describes the resource components to execute.

[0173] At 1210, the UE may determine resources allocated for sidelink interference measurement based on a formula, wherein the interference measurement configuration indicates that resources allocated for sidelink interference measurement have been allocated. The operations of 1210 may be performed according to the methods described herein. In some examples, aspects of the operations of 1210 may be as described with reference to Figures 6 to 9 Describes the resource components to execute.

[0174] At 1215, the UE may receive a first signal from a second UE using a first TRP of the first UE and receive a second signal from the second UE using a second TRP of the first UE. The operations of 1215 may be performed according to the methods described herein. In some examples, aspects of the operations of 1215 may be as described with reference to Figures 6 to 9 The signaling components described are used to perform the

[0175] At 1220, the UE may measure a first sidelink interference for the first signal and a second sidelink interference for the second signal based on the interference measurement configuration. The operations of 1220 may be performed according to the methods described herein. In some examples, aspects of the operations of 1220 may be as described with reference to Figures 6 to 9 The sidelink interference component described is performed.

[0176] At 1225, the UE may compare the first sidelink interference and the second sidelink interference to a sidelink interference threshold. The operations of 1225 may be performed according to the methods described herein. In some examples, aspects of the operations of 1225 may be as described with reference to Figures 6 to 9This is performed using the threshold component described in

[15] .

[0177] At 1230, the UE may process the first signal and the second signal in combination on the first TRP and the second TRP based on the comparison or process the first signal and the second signal separately across the first TRP and the second TRP. The operations of 1230 may be performed according to the methods described herein. In some examples, aspects of the operations of 1230 may be as described with reference to Figures 6 to 9 The TRP components described are executed.

[0178] Figure 13 A flow chart illustrating a method 1300 for supporting sidelink reception with multiple TRPs according to aspects of the present disclosure is shown. The operations of the method 1300 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1300 may be implemented by the UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0179] At 1305, the UE may receive an indication of an interference measurement configuration indicating resources allocated for sidelink interference measurements across multiple TRPs. The operations of 1305 may be performed according to the methods described herein. In some examples, aspects of the operations of 1305 may be as described with reference to Figures 6 to 9 Describes the resource components to execute.

[0180] At 1310, the UE may identify resources allocated for sidelink interference measurement as randomly punctured resources based on a bitmap indicated by the interference measurement configuration. The operations of 1310 may be performed according to the methods described herein. In some examples, aspects of the operations of 1310 may be as described with reference to Figures 6 to 9 Describes the resource components to execute.

[0181] At 1315, the UE may receive a first signal from a second UE using a first TRP of the first UE and receive a second signal from the second UE using a second TRP of the first UE. The operations of 1315 may be performed according to the methods described herein. In some examples, aspects of the operations of 1315 may be as described with reference to Figures 6 to 9 The signaling components described are used to perform the

[0182] At 1320, the UE may measure a first sidelink interference for the first signal and a second sidelink interference for the second signal based on the interference measurement configuration. The operations of 1320 may be performed according to the methods described herein. In some examples, aspects of the operations of 1320 may be as described with reference to Figures 6 to 9 The sidelink interference component described is performed.

[0183] At 1325, the UE may compare the first sidelink interference and the second sidelink interference to a sidelink interference threshold. The operations of 1325 may be performed according to the methods described herein. In some examples, aspects of the operations of 1325 may be as described with reference to Figures 6 to 9 This is performed using the threshold component described in

[15] .

[0184] At 1330, the UE may process the first signal and the second signal in combination on the first TRP and the second TRP based on the comparison or process the first signal and the second signal separately across the first TRP and the second TRP. The operations of 1330 may be performed according to the methods described herein. In some examples, aspects of the operations of 1330 may be as described with reference to Figures 6 to 9 The TRP components described are executed.

[0185] Figure 14 A flow chart illustrating a method 1400 for supporting sidelink reception with multiple TRPs according to aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1400 may be implemented by the UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0186] At 1405, the UE may be configured to measure allocated resources for sidelink interference across multiple TRPs. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be as described with reference to Figures 6 to 9 Describes the resource components to execute.

[0187] At 1410, the UE may determine an interference measurement configuration indicating resources configured to be allocated for sidelink interference measurements across multiple TRPs. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be as described with reference to Figures 6 to 9 The TRP components described are executed.

[0188] At 1415, the UE may send an indication of the interference measurement configuration. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be as described with reference to Figures 6 to 9 The sidelink interference component described is performed.

[0189] Figure 15 A flow chart illustrating a method 1500 for supporting sidelink reception with multiple TRPs according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1500 may be implemented by the UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0190] At 1505, the UE may identify the presence of a UE with a TRP set. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be as described with reference to Figures 6 to 9 The TRP components described are executed.

[0191] At 1510, the UE may be configured to measure allocated resources for sidelink interference across multiple TRPs. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be as described with reference to Figures 6 to 9 Describes the resource components to execute.

[0192] At 1515, the UE may determine an interference measurement configuration indicating resources configured to be allocated for sidelink interference measurements across multiple TRPs. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be as described with reference to Figures 6 to 9 The TRP components described are executed.

[0193] At 1520, the UE may send an indication of an interference measurement configuration based on identifying the presence of a UE with a TRP set. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be as described with reference to Figures 6 to 9 The sidelink interference component described is performed.

[0194] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0195] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0196] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0197] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0198] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or a combination of any of these. Features that implement the functions may also be physically located at various locations, including being distributed so that portions of the functions are implemented at different physical locations.

[0199] Computer readable medium includes non-transient computer storage medium and communication medium, and communication medium includes any medium that promotes the transmission of computer program from one place to another place.Non-transient storage medium can be any available medium that can be accessed by general-purpose computer or special-purpose computer.By way of example and not limitation, non-transient computer readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage device or can be used for carrying or storing desired program code unit and any other non-transient medium that can be accessed by general-purpose or special-purpose computer or general or special-purpose processor in the form of instruction or data structure.In addition, any connection is suitably referred to as computer readable medium.For example, if software is to be sent from website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer readable medium. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0200] As used herein (including in the claims), "or" as used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on" is interpreted.

[0201] In the accompanying drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number to distinguish between similar components. If only the first reference number is used in the specification, the description applies to any one of the similar components having the same first reference number, regardless of the second reference number or other subsequent reference numbers.

[0202] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that can be implemented or within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," rather than "preferred" or "having advantages over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0203] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the overall principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is intended to be used in the broadest sense consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a first user equipment (UE), comprising: receiving an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across a plurality of transmit / receive points; Using a first transmission and reception point of the first UE to receive a first signal from a second UE, and using a second transmission and reception point of the first UE to receive a second signal from the second UE; measuring first sidelink interference for the first signal and second sidelink interference for the second signal based at least in part on the interference measurement configuration; comparing the first sidelink interference and the second sidelink interference to a sidelink interference threshold; as well as Based at least in part on the comparison, the first signal and the second signal are processed in combination at the first transmit-receive point and the second transmit-receive point, or the first signal and the second signal are processed separately across the first transmit-receive point and the second transmit-receive point.

2. The method according to claim 1, further comprising: The resources allocated for the sidelink interference measurement are identified based at least in part on an index indicated by the interference measurement configuration, wherein the index indicates a resource pattern from a plurality of configured resource patterns.

3. The method according to claim 1, further comprising: The resources allocated for the sidelink interference measurement are determined based at least in part on a formula, wherein the interference measurement configuration indicates that the resources allocated for the sidelink interference measurement have been allocated.

4. The method according to claim 1, further comprising: The resources allocated for the sidelink interference measurement are identified as randomly punctured resources based at least in part on a bitmap indicated by the interference measurement configuration.

5. The method according to claim 1, wherein Measuring the first sidelink interference and the second sidelink interference includes: receiving sidelink control information from the second UE, the sidelink control information including the interference measurement configuration; and Received signal strengths of the first signal and the second signal are measured on the resources allocated for the sidelink interference measurement.

6. The method according to claim 1, wherein Processing the first signal and the second signal includes: determining that the first sidelink interference and the second sidelink interference are less than or equal to the sidelink interference threshold; and The first signal and the second signal are decoded in combination at the first transmit-receive point and the second transmit-receive point based at least in part on determining that the first sidelink interference and the second sidelink interference are less than or equal to the sidelink interference threshold.

7. The method according to claim 6, further comprising: The first sidelink interference and the second sidelink interference are measured based at least in part on per-resource-element energy, a received signal strength indicator, or both corresponding to the first signal and the second signal.

8. The method according to claim 1, wherein Processing the first signal and the second signal includes: determining that the first sidelink interference or the second sidelink interference is greater than the sidelink interference threshold; and The first signal and the second signal are separately decoded across the first transmit-receive point and the second transmit-receive point based at least in part on a determination that the first sidelink interference or the second sidelink interference is greater than the sidelink interference threshold.

9. The method according to claim 1, further comprising: Interference cancellation operations are performed based at least in part on the first sidelink interference and the second sidelink interference.

10. The method according to claim 9, wherein: The interference cancellation operation includes: determining that one or more reference signals associated with the first signal and one or more reference signals associated with the second signal are not orthogonal; and Offsetting non-orthogonality between one or more reference signals associated with the first signal and one or more reference signals associated with the second signal, wherein the offset is based at least in part on the first sidelink interference and the second sidelink interference.

11. The method according to claim 1, wherein The first signal and the second signal are associated with a broadcast transmission, a multicast transmission, or any combination thereof.

12. The method according to claim 1, wherein The resources allocated for the sidelink interference measurement include zero-power interference measurement resources.

13. A method for wireless communication at a user equipment (UE), comprising: resources configured to be allocated for sidelink interference measurement of one or more signals received across a plurality of transmission / reception points at another UE; determining an interference measurement configuration indicating configured resources allocated for sidelink interference measurement of the one or more signals received across the plurality of transmit / receive points at the other UE, wherein corresponding sidelink interference for the one or more signals on the configured resources is to be measured at the other UE; as well as An indication of the interference measurement configuration is sent.

14. The method according to claim 13, wherein Determining the interference measurement configuration includes: A resource pattern is selected from a plurality of configured resource patterns, wherein the interference measurement configuration includes an index indicating the selected resource pattern.

15. The method according to claim 13, wherein Determining the interference measurement configuration includes: The configured resources allocated for the sidelink interference measurement are determined based at least in part on a formula, wherein the interference measurement configuration indicates that the configured resources allocated for the sidelink interference measurement have been allocated.

16. The method according to claim 13, wherein: Determining the interference measurement configuration includes: One or more resource elements are punctured using the configured resources allocated for sidelink measurement, wherein the interference measurement configuration includes a bitmap indicating the configured resources allocated for sidelink measurement.

17. The method according to claim 13, further comprising: A determination is made that a network congestion level exceeds a congestion threshold, wherein sending the indication of the interference measurement configuration is based at least in part on determining that the network congestion level exceeds the congestion threshold.

18. The method according to claim 13, further comprising: Identifying the presence of the other UE having multiple transmission reception points, wherein sending the indication of the interference measurement configuration is based at least in part on identifying the presence of the other UE having the multiple transmission reception points.

19. The method according to claim 18, wherein Identifying the existence of the other UE having the multiple transmission and reception points includes: Control signaling indicating a capability of the other UE having the multiple transmission reception points is received.

20. The method according to claim 18, wherein Identifying the existence of the other UE having the multiple transmission and reception points includes: Control signaling is received, the control signaling including an indication of additional resources allocated for the sidelink interference measurement.

21. The method according to claim 13, wherein The configured resources allocated for the sidelink interference measurement include zero-power interference measurement resources.

22. An apparatus for wireless communication at a first user equipment (UE), comprising: processor, a memory coupled to the processor; as well as Instructions, which are stored in the memory and executable by the processor to cause the device to perform the following operations: receiving an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across a plurality of transmit / receive points; Using a first transmission and reception point of the first UE to receive a first signal from a second UE, and using a second transmission and reception point of the first UE to receive a second signal from the second UE; measuring first sidelink interference for the first signal and second sidelink interference for the second signal based at least in part on the interference measurement configuration; comparing the first sidelink interference and the second sidelink interference to a sidelink interference threshold; as well as Based at least in part on the comparison, the first signal and the second signal are processed in combination at the first transmit-receive point and the second transmit-receive point, or the first signal and the second signal are processed separately across the first transmit-receive point and the second transmit-receive point.

23. The device according to claim 22, wherein The instructions may also be executed by the processor to cause the device to perform the following operations: The resources allocated for the sidelink interference measurement are identified based at least in part on an index indicated by the interference measurement configuration, wherein the index indicates a resource pattern from a plurality of configured resource patterns.

24. The apparatus according to claim 22, wherein The instructions may also be executed by the processor to cause the device to perform the following operations: The resources allocated for the sidelink interference measurement are determined based at least in part on a formula, wherein the interference measurement configuration indicates that the resources allocated for the sidelink interference measurement have been allocated.

25. The apparatus according to claim 22, wherein The instructions may also be executed by the processor to cause the device to perform the following operations: The resources allocated for the sidelink interference measurement are identified as randomly punctured resources based at least in part on a bitmap indicated by the interference measurement configuration.

26. The apparatus according to claim 22, wherein The instructions for measuring the first sidelink interference and the second sidelink interference are executable by the processor to cause the apparatus to: receiving sidelink control information from the second UE, the sidelink control information including the interference measurement configuration; and Received signal strengths of the first signal and the second signal are measured on the resources allocated for the sidelink interference measurement.

27. The apparatus according to claim 22, wherein The instructions for processing the first signal and the second signal are executable by the processor to cause the apparatus to: determining that the first sidelink interference and the second sidelink interference are less than or equal to the sidelink interference threshold; and The first signal and the second signal are decoded in combination at the first transmit-receive point and the second transmit-receive point based at least in part on determining that the first sidelink interference and the second sidelink interference are less than or equal to the sidelink interference threshold.

28. The apparatus according to claim 27, wherein The instructions may also be executed by the processor to cause the device to perform the following operations: The first sidelink interference and the second sidelink interference are measured based at least in part on per-resource-element energy, a received signal strength indicator, or both corresponding to the first signal and the second signal.

29. The apparatus according to claim 22, wherein The instructions for processing the first signal and the second signal are executable by the processor to cause the apparatus to: determining that the first sidelink interference or the second sidelink interference is greater than the sidelink interference threshold; and The first signal and the second signal are separately decoded across the first transmit-receive point and the second transmit-receive point based at least in part on a determination that the first sidelink interference or the second sidelink interference is greater than the sidelink interference threshold.

30. The apparatus of claim 22, wherein: The instructions may also be executed by the processor to cause the device to perform the following operations: Interference cancellation operations are performed based at least in part on the first sidelink interference and the second sidelink interference.

31. The apparatus according to claim 30, wherein The interference cancellation operation includes: determining that one or more reference signals associated with the first signal and one or more reference signals associated with the second signal are not orthogonal; and Offsetting non-orthogonality between one or more reference signals associated with the first signal and one or more reference signals associated with the second signal, wherein the offset is based at least in part on the first sidelink interference and the second sidelink interference.

32. The apparatus of claim 22, wherein: The first signal and the second signal are associated with a broadcast transmission, a multicast transmission, or any combination thereof.

33. The apparatus of claim 22, wherein: The resources allocated for the sidelink interference measurement include zero-power interference measurement resources.

34. An apparatus for wireless communication at a user equipment (UE), comprising: processor, a memory coupled to the processor; as well as Instructions, which are stored in the memory and executable by the processor to cause the device to perform the following operations: resources configured to be allocated for sidelink interference measurement of one or more signals received across a plurality of transmission / reception points at another UE; determining an interference measurement configuration indicating configured resources allocated for sidelink interference measurement of the one or more signals received across the plurality of transmit / receive points at the other UE, wherein corresponding sidelink interference for the one or more signals on the configured resources is to be measured at the other UE; as well as An indication of the interference measurement configuration is sent.

35. The apparatus of claim 34, wherein: The instructions are further executable by the processor to cause the apparatus to perform the method according to any one of claims 14 to 21.

36. A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to: resources configured to be allocated for sidelink interference measurement of one or more signals received across a plurality of transmission / reception points at another UE; determining an interference measurement configuration indicating resources configured to be allocated for sidelink interference measurement of the one or more signals received across the plurality of transmission / reception points at the other UE, wherein: corresponding sidelink interference for the one or more signals on the configured resources is to be measured at the other UE; as well as An indication of the interference measurement configuration is sent.

37. The non-transitory computer readable medium of claim 36, wherein: The code further comprises instructions executable by the processor to perform the method according to any one of claims 14 to 21.

38. An apparatus for wireless communication at a user equipment (UE), comprising: means for configuring allocated resources for sidelink interference measurement for one or more signals received across a plurality of transmission / reception points at another UE; means for determining an interference measurement configuration indicating configured resources allocated for sidelink interference measurement of the one or more signals received across the plurality of transmit / receive points at the other UE, wherein corresponding sidelink interference for the one or more signals on the configured resources is to be measured at the other UE; as well as Means for sending an indication of the interference measurement configuration.

39. The apparatus of claim 38, further comprising means for performing the method of any one of claims 14 to 21.

40. An apparatus for wireless communication at a first user equipment (UE), comprising: means for receiving an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across a plurality of transmit / receive points; means for receiving a first signal from a second UE using a first transmission / reception point of the first UE, and receiving a second signal from the second UE using a second transmission / reception point of the first UE; means for measuring first sidelink interference for the first signal and second sidelink interference for the second signal based at least in part on the interference measurement configuration; means for comparing the first sidelink interference and the second sidelink interference to a sidelink interference threshold; as well as Means for processing the first and second signals in combination at the first and second transmit-receive points or separately across the first and second transmit-receive points based at least in part on the comparison.

41. The apparatus of claim 40, further comprising means for performing the method of any one of claims 2 to 12.

42. A non-transitory computer-readable medium storing code for wireless communication at a first user equipment (UE), the code comprising instructions executable by a processor to: receiving an indication of an interference measurement configuration, the interference measurement configuration indicating resources allocated for sidelink interference measurement across a plurality of transmit / receive points; Using a first transmission and reception point of the first UE to receive a first signal from a second UE, and using a second transmission and reception point of the first UE to receive a second signal from the second UE; measuring first sidelink interference for the first signal and second sidelink interference for the second signal based at least in part on the interference measurement configuration; comparing the first sidelink interference and the second sidelink interference to a sidelink interference threshold; as well as Based at least in part on the comparison, the first signal and the second signal are processed in combination at the first transmit-receive point and the second transmit-receive point, or the first signal and the second signal are processed separately across the first transmit-receive point and the second transmit-receive point.

43. The non-transitory computer readable medium of claim 42, wherein: The code further comprises instructions executable by the processor to perform the method according to any one of claims 2 to 12.

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