Frequency multiplexing for sidelink transmission

Abstract

Wireless communication methods, systems, and apparatus for reducing interference caused by power leakage are described. A first user equipment (UE) or base station may select communication resources for sidelink communication based on the distance between UEs that have reserved frequency resources in the same time window. The first UE or base station may determine a distance parameter between the first UE and one or more other UEs (e.g., including a second UE) that have reserved frequency resources in the time window. The distance parameter may represent the physical distance between the first UE and the second UE or, for example, the power received by a reference signal of the second UE as received by the first UE. The first UE or base station may select communication resources based on whether the distance parameter is below a threshold, and the first UE may use the selected resources to transmit sidelink communication.

Description

[0001] Cross-referencing

[0002] This patent application claims the benefit of Greek provisional patent application No. 20200100361 entitled “FREQUENCYMULTIPLEXING FOR SIDELINK TRANSMISSIONS” filed by WU et al. on June 24, 2020, which has been assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0003] The following text generally refers to wireless communication, and in particular frequency reuse for sidelink transmission.

[0004] background

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. 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 (such as Long Term Evolution (LTE) systems, LTE-A Advanced (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 can employ various technologies, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Extended 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 of which simultaneously supports communication from multiple communication devices, which may also be referred to as User Equipment (UE).

[0006] Some communications between UEs (such as sidelink communications) can cause interference at other UEs, which can reduce the quality and reliability of communication at those other UEs.

[0007] Overview

[0008] The described technology relates to improved methods, systems, devices, and apparatuses for frequency reuse supporting sidelink transmissions. Generally, the described technology provides for reducing interference caused by power leakage. A first user equipment (UE) or base station may select communication resources for sidelink communication based on the distance between UEs that reserve frequency resources within the same time window (e.g., Transmission Time Interval (TTI) or Channel Occupancy Time (COT)). For example, the first UE may select resources or (e.g., receive allocated resources from the base station) to transmit sidelink communication to a second UE. When frequency resources are reserved (e.g., by the first UE or the base station) for sidelink communication within a time window, the first UE or the base station may determine a distance parameter between the first UE and one or more other UEs (e.g., including a third UE) that have reserved frequency resources within that time window. The distance parameter may represent the physical distance between the first UE and the one or more other UEs, for example, based on broadcast sidelink information that may include location information. Additionally or alternatively, the distance parameter may be represented by the Reference Signal Received Power (RSRP) of the one or more UEs as measured by the first UE.

[0009] If the distance parameter is less than a threshold (e.g., the first and third UEs are in similar locations or sufficiently close to each other), the first UE or the base station may select frequency resources within a time window. If the distance parameter is greater than the threshold, the first UE or the base station may select frequency resources based on one or more constraints. For example, the first UE or the base station may select frequency resources within a different time window, or may select frequency resources at an offset from the frequency resources reserved by the one or more UEs. Doing so can, for example, reduce general power leakage interference, because the first UE can transmit sidelink communication within the time window or frequency resource with reduced interference from power leakage. If the base station selects resources based on the distance parameter, the base station may allocate resources to the first UE via control messages. The first UE can use the selected resources (e.g., selected by the first UE or the base station) to transmit sidelink communication to the second UE.

[0010] A method for wireless communication at a first UE is described. The method may include: identifying a distance parameter associated with the first UE and a second UE; determining whether the distance parameter is less than a threshold; performing a selection process for frequency resources for frequency-reused sidelink communication within a time window including communication resources allocated to the second UE and based on determining whether the distance parameter is less than the threshold; and transmitting the frequency-reused sidelink communication based on the selection process.

[0011] 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. These instructions may be executed by the processor to cause the apparatus to: identify a distance parameter associated with the first UE and a second UE; determine whether the distance parameter is less than a threshold; perform a selection process for frequency resources for frequency-multiplexed sidelink communication within a time window including communication resources allocated to the second UE and based on the determination that the distance parameter is less than the threshold; and transmit the frequency-multiplexed sidelink communication based on the selection process.

[0012] Another device for wireless communication at a first UE is described. The device may include means for: identifying a distance parameter associated with the first UE and a second UE; determining whether the distance parameter is less than a threshold; performing a selection process for frequency resources for frequency-multiplexed sidelink communication within a time window including communication resources allocated to the second UE and based on determining whether the distance parameter is less than the threshold; and transmitting the frequency-multiplexed sidelink communication based on the selection process.

[0013] A non-transient computer-readable medium is described, storing code for wireless communication at a first UE. The code may include instructions executable by a processor to: identify a distance parameter associated with the first UE and a second UE; determine whether the distance parameter is less than a threshold; perform a selection process for frequency resources for frequency-multiplexed sidelink communication within a time window including communication resources allocated to the second UE and based on the determination that the distance parameter is less than the threshold; and transmit the frequency-multiplexed sidelink communication based on the selection process.

[0014] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for: determining that the distance parameter may be less than the threshold; and selecting frequency resources within the time window for the frequency-multiplexed sidelink communication based on the distance parameter being less than the threshold.

[0015] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means, or instructions for: determining that the distance parameter may be greater than the threshold; identifying a limitation on frequency resources for the frequency-multiplexed sidelink communication based on the distance parameter being greater than the threshold; and selecting frequency resources for the frequency-multiplexed sidelink communication based on the limitation.

[0016] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, selecting a frequency resource may include operations, features, means, or instructions for excluding frequency resources within a time window from candidate resources for selecting a frequency resource based on the constraint.

[0017] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, selecting frequency resources may include operations, features, means, or instructions for selecting frequency resources within the time window and offset in frequency from the communication resources allocated to the second UE, based on the constraint.

[0018] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving configuration signaling indicating a frequency offset.

[0019] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for determining the distance parameter based on a measurement of the RSRP from the second UE, wherein the distance parameter and the threshold include the corresponding RSRP.

[0020] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the set of UEs including the second UE may be allocated corresponding communication resources within the time window, and the second UE in the set of UEs may have a minimum RSRP relative to the first UE.

[0021] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for determining the distance parameter based on the location of the first UE and an indication of the location of the second UE, wherein the distance parameter and the threshold include a corresponding distance.

[0022] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, a set of UEs including the second UE may be allocated corresponding communication resources within the time window, and the second UE may have a maximum distance from the first UE within the set of UEs.

[0023] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, a set of UEs including the second UE may be allocated corresponding communication resources within the time window, and the second UE initiates a COT used by the first UE and the second UE.

[0024] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for determining the distance parameter based on the location of the first UE and the location of the COT used by the second UE, wherein the distance parameter and the threshold include the corresponding distance.

[0025] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the location of the COT includes the location of the wireless device that initiates the COT.

[0026] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the location of the COT includes the geographic location or geographic division associated with the COT.

[0027] In some examples of methods, apparatus (devices) and non-transient computer-readable media described herein, determining whether the distance parameter may be less than the threshold may include operations, features, means, or instructions for determining whether the distance parameter may be less than the threshold based on the fact that the zoning identifier (ID) associated with the first UE is the same zoning ID associated with the COT.

[0028] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the location of the COT can be received via COT sharing information or can be configured for the COT.

[0029] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, devices or instructions for receiving configuration signaling indicating the threshold.

[0030] A method for wireless communication at a base station is described. The method may include: identifying a distance parameter associated with a first UE and a second UE; determining whether the distance parameter is less than a threshold; performing a selection process for frequency resources for frequency-reused sidelink communication for the first UE within a time window including communication associated with the second UE and based on determining whether the distance parameter is less than the threshold; and allocating resources for the frequency-reused sidelink communication to the first UE based on the selection process.

[0031] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. These instructions may be executable by the processor to cause the apparatus to: identify a distance parameter associated with a first UE and a second UE; determine whether the distance parameter is less than a threshold; perform a selection process for frequency resources for frequency-multiplexed sidelink communication for the first UE within a time window including communication associated with the second UE and based on determining whether the distance parameter is less than the threshold; and allocate resources to the first UE for the frequency-multiplexed sidelink communication based on the selection process.

[0032] Another device for wireless communication at a base station is described. The device may include means for: identifying a distance parameter associated with a first UE and a second UE; determining whether the distance parameter is less than a threshold; performing a selection process for frequency resources for frequency-reused sidelink communication for the first UE within a time window including communication associated with the second UE and based on determining whether the distance parameter is less than the threshold; and allocating resources for the frequency-reused sidelink communication to the first UE based on the selection process.

[0033] A non-transient computer-readable medium is described, storing code for wireless communication at a base station. The code may include instructions executable by a processor to: identify a distance parameter associated with a first UE and a second UE; determine whether the distance parameter is less than a threshold; perform a selection process for frequency resources for frequency-reused sidelink communication for the first UE within a time window including communication associated with the second UE and based on the determination that the distance parameter is less than the threshold; and allocate resources to the first UE for the frequency-reused sidelink communication based on the selection process.

[0034] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for: determining that the distance parameter may be less than the threshold; and allocating frequency resources within the time window for the frequency-multiplexed sidelink communication based on the distance parameter being less than the threshold.

[0035] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means, or instructions for: determining that the distance parameter may be greater than the threshold; identifying a limitation on frequency resources for the frequency-multiplexed sidelink communication based on the distance parameter being greater than the threshold; and allocating frequency resources for the frequency-multiplexed sidelink communication based on the limitation.

[0036] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, allocating frequency resources may include operations, features, means, or instructions for allocating frequency resources within a second time window, different from the time window, for the frequency-multiplexed sidelink communication based on the constraint.

[0037] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, allocating frequency resources may include operations, features, means, or instructions for allocating frequency resources within the time window and offset in frequency from the communication resources allocated to the second UE, based on the constraint, for the frequency-multiplexed sidelink communication.

[0038] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for conveying configuration signaling indicating frequency offset.

[0039] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for determining the distance parameter based on an instruction received from the first UE for an RSRP of the second UE, wherein the distance parameter and the threshold include the corresponding RSRP.

[0040] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting to the first UE and the second UE an instruction to report a measurement of RSRP used to determine the distance parameter.

[0041] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the set of UEs including the second UE may be allocated corresponding communication resources within the time window, and the second UE in the set of UEs may have a minimum RSRP relative to the first UE.

[0042] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for determining the distance parameter based on receiving an indication of the location of the first UE and an indication of the location of the second UE, wherein the distance parameter and the threshold include the corresponding distance.

[0043] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting to the first UE and the second UE an instruction to report a measurement for determining the location of the distance parameter.

[0044] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, a set of UEs including the second UE may be allocated corresponding communication resources within the time window, and the second UE may have a maximum distance from the first UE within the set of UEs.

[0045] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, a set of UEs including the second UE may be allocated corresponding communication resources within the time window, and the second UE initiates a COT used by the first UE and the second UE.

[0046] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving from the first UE the distance parameter based on the location of the second UE or RSRP determined by the first UE. Brief description of the attached diagram

[0048] Figure 1 Examples of wireless communication systems that support frequency reuse for sidelink transmission according to various aspects of this disclosure are explained.

[0049] Figure 2 Examples of wireless communication systems that support frequency reuse for sidelink transmission according to various aspects of this disclosure are explained.

[0050] Figure 3A and 3B Examples of resource selection schemes supporting frequency reuse for sidelink transmission according to various aspects of this disclosure are explained.

[0051] Figure 4 An example of a process flow supporting frequency multiplexing for sidelink transmission according to various aspects of this disclosure is explained.

[0052] Figure 5 and 6 A block diagram of an apparatus supporting frequency multiplexing for sidelink transmission according to various aspects of this disclosure is shown.

[0053] Figure 7 A block diagram of a communication manager supporting frequency multiplexing for sidelink transmission according to various aspects of this disclosure is shown.

[0054] Figure 8 A diagram of a system including a device supporting frequency multiplexing for sidelink transmission is shown according to various aspects of this disclosure.

[0055] Figure 9 and 10A block diagram of an apparatus supporting frequency multiplexing for sidelink transmission according to various aspects of this disclosure is shown.

[0056] Figure 11 A block diagram of a communication manager supporting frequency multiplexing for sidelink transmission according to various aspects of this disclosure is shown.

[0057] Figure 12 A diagram of a system including a device supporting frequency multiplexing for sidelink transmission is shown according to various aspects of this disclosure.

[0058] Figures 13 to 18 A flowchart illustrating a method for frequency multiplexing for sidelink transmission according to various aspects of this disclosure is shown.

[0059] Detailed description

[0060] Some user equipment (UEs) may use sidelink communication for communication. For example, a first UE and a second UE may use sidelink communication to communicate, and a third UE may use sidelink communication to communicate with one or more other UEs. Some resources allocated to the first and second UEs may be interleaved with resources allocated to the third UE, such that the resources allocated to the first and second UEs can span a bandwidth larger than the bandwidth occupied by the resources themselves. Sidelink communication (e.g., in unlicensed spectrum) may be transmitted without power control, such that sidelink communication received at a greater distance may be associated with lower received power compared to sidelink communication received at a closer distance (e.g., this may be referred to as the near-far effect).

[0061] Sidelink communication can be associated with in-band transmissions, which can cause power leakage to adjacent interleaved frequency resources. This leakage can disrupt or mask communication in adjacent frequency resources due to near-far effects. For example, power leakage from adjacent frequency resources used by a third UE can be greater than or equal to the received power in frequency resources allocated for sidelink communication between the first and second UEs (e.g., if the distance between the third and second UEs is less than the distance between the first and second UEs). This power leakage can cause interference when receiving sidelink communication, leading to lower communication quality and reliability, and in some cases, loss of sidelink communication.

[0062] This disclosure provides techniques for reducing interference caused by power leakage by limiting frequency resources used for sidelink communication based on the distance between UEs that reserve frequency resources in the same time window (e.g., Transmission Time Interval (TTI) or Channel Occupancy Time (COT)). In some cases, COT may additionally or alternatively be referred to as channel occupancy. For example, a first UE may select resources or (e.g., receive allocated resources from a base station) to transmit sidelink communication to a second UE. When frequency resources are reserved for sidelink communication within a time window (e.g., by the first UE or the base station), the first UE or the base station may determine a distance parameter between the first UE and one or more other UEs (e.g., including a third UE) that have reserved frequency resources in that time window.

[0063] If the distance parameter is less than a threshold (e.g., the first and third UEs are in similar locations), the first UE or the base station may select frequency resources within that time window (e.g., because the near-far effect is reduced if the first and third UEs are in similar locations). If the distance parameter is greater than the threshold, the first UE or the base station may select frequency resources based on one or more constraints. For example, the first UE or the base station may select frequency resources within a different time window, or it may select frequency resources at an offset from the frequency resources reserved for the third UE. Doing so can, for example, reduce general power leakage interference, because the first UE can transmit sidelink communication within the time window or frequency resources with reduced interference from power leakage.

[0064] The distance parameter can represent the physical distance between the first UE and the third UE, for example, based on broadcast sidelink information that may include location information. Alternatively, the distance parameter can be represented by the reference signal received power (RSRP) of the third UE as measured by the first UE. In some examples, the base station or another UE can configure the distance parameter and distance parameter threshold, for example, via configuration signaling or sidelink signaling.

[0065] If the base station selects resources based on distance parameters, it can allocate resources to the first UE via control messages. The first UE can then use the selected resources (e.g., selected by the first UE or the base station) to transmit sidelink communication to the second UE. As described herein, using sidelink resources selected based on distance parameters can reduce interference and improve communication quality and reliability.

[0066] The aspects of this disclosure are initially described in the context of wireless communication systems. These aspects are further explained and described by way of and with reference to resource selection schemes, process flows, apparatus diagrams, system diagrams, and flowcharts relating to frequency reuse for sidelink transmissions.

[0067] Figure 1Examples of a wireless communication system 100 supporting frequency reuse for sidelink transmission according to various aspects of this disclosure are described. 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, communication with low-cost and low-complexity devices, or any combination thereof.

[0068] Each base station 105 may be distributed across a geographical area to form a wireless communication system 100, and may be different types of devices or devices with different 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, and UEs 115 and base stations 105 may establish one or more communication links 125 over the coverage area 110. The coverage area 110 may be an example of a geographical area over which base stations 105 and UEs 115 may support signal communication according to one or more radio access technologies. Base station 105 may represent or be referred to as a roadside unit (RSU), for example, forming part of a sidelink network.

[0069] Each UE 115 can be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. Each UE 115 can be a different type of device or a device with different capabilities. Figure 1 The document describes some example UE 115s. The UE 115 described herein can communicate with various types of devices, such as other UE 115s, base station 105, or network equipment (e.g., core network nodes, relay equipment, integrated access and backhaul (IAB) nodes, or other network equipment). Figure 1 As shown in the image.

[0070] Each base station 105 may communicate with the core network 130, or with each other, or both. For example, base station 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base stations 105 may communicate with each other directly (e.g., directly between base stations 105), indirectly (e.g., via the core network 130), or directly and indirectly on backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, backhaul link 120 may be or include one or more radio links.

[0071] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, base transceiver station, radio base station, access point, radio transceiver, B node, evolved B node (eNB), next-generation B node or gigabit B node (any of which may be referred to as gNB), home B node, home evolved B node, or other suitable terms.

[0072] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a unit, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0073] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, as well as base station 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1 As shown in the image.

[0074] UE 115 and base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the radio spectrum band (e.g., a bandwidth portion (BWP)) operating 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 may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating carrier operation, user data, or other signaling. Wireless communication system 100 may support communication with UE 115 using carrier aggregation or multi-carrier operation. UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used in conjunction with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0075] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a 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 code rate of the modulation scheme, or both). Thus, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate the UE 115 can achieve. Wireless communication resources can refer to a combination of radio frequency spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and using multiple spatial layers can further improve the data rate or data integrity of communication with the UE 115.

[0076] The time interval of base station 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period T. s =1 / (Δf) max ·N f ) seconds, where Δf max This can represent the maximum supported subcarrier spacing, while N f This can represent the maximum supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0077] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into several 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 several symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple mini-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N) symbols. f (Number) sampling periods. The duration of a symbol period can depend on the subcarrier interval or the operating frequency band.

[0078] A subframe, time slot, mini-slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0079] Physical channels can be multiplexed on a carrier using various techniques. Physical control channels and physical data channels can be multiplexed on a downlink carrier, for example, 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 physical control channels can be defined by the number of symbol periods and can extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESET) can be configured for a set of UEs 115. For example, one or more UEs 115 can monitor or search control regions for control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information in a control information format having a given payload size. The search space set may include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set configured to send control information to a specific UE 115.

[0080] In some examples, base station 105 may be mobile, and thus provide communication coverage to mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. Wireless communication system 100 may 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 to various geographic coverage areas 110.

[0081] Some UE 115 devices (such as MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with each other or with base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that have integrated sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents it to people interacting with the application. Some UE 115 devices may be designed to collect information or automate the behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wilderness survival monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial toll collection.

[0082] Wireless communication system 100 may be configured to support ultra-reliable communication or low latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low latency communication (URLLC) or mission-critical communication. UE 115 may be designed to support ultra-reliable, low latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private or group communication and may be supported by one or more mission-critical services, such as Mission-Critical Talk-to-Talk (MCPTT), Mission-Critical Video (MCVideo), or Mission-Critical Data (MCData)). Support for mission-critical functions may include prioritization of services, and mission-critical services may be used for public safety or general business applications. The terms ultra-reliable, low latency, mission-critical, and ultra-reliable low latency are used interchangeably herein.

[0083] In some examples, UE 115 may also be able to communicate directly with other UE 115 on a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UE 115s utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UE 115s in such a group may be outside the geographic coverage area 110 of base station 105 or may be unable to receive transmissions from base station 105 for other reasons. In some examples, groups of UE 115s communicating via D2D communication may utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between the individual UE 115s without involving base station 105.

[0084] In some systems, the D2D communication link 135 may be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles may communicate using vehicle-to-vehicle (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles may signal information related to traffic conditions, signaling, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate via vehicle-to-network (V2N) communication through one or more network nodes (e.g., base station 105) with roadside infrastructure (such as roadside units), or with the network, or with both.

[0085] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC). The EPC or 5GC may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) for routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by base station 105 associated with core network 130. User IP packets can be delivered through the user plane entity, which provides IP address allocation and other functions. The user plane entity can connect to network operator IP service 150. Carrier IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0086] Some network devices (such as base station 105) may include sub-components, such as access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with each UE 115 through one or more other access network transport entities 145, which may be referred to as a radio headend, smart radio headend, or transmit / receive point (TRP). 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 headends and ANCs) or combined into a single network device (e.g., base station 105).

[0087] Wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 MHz to 300 GHz. Generally, the 300 MHz to 3 GHz band is referred to as a UHF band or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter. UHF waves can be blocked or redirected by buildings and environmental features, but these waves can penetrate various structures sufficiently for macrocells to provide service to UE 115 located indoors. Compared to transmissions using smaller frequencies and longer waves in the lower HF or VHF portions of the spectrum below 300 MHz, UHF wave transmission can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0088] Wireless communication system 100 may utilize both licensed and unlicensed radio spectrum bands. For example, wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in unlicensed radio spectrum bands, devices (such as base station 105 and UE 115) may employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands may be based on carrier aggregation configuration (e.g., LAA) in coordination with component carriers operating in licensed frequency bands. Operation in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0089] Base station 105 or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels that can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may coexist at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have an antenna array with several rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0090] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array, such that some signals propagating relative to a particular orientation of the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include the transmitting or receiving device applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with that device. The adjustments associated with each antenna element may be defined by a beamforming weight set associated with a particular orientation (e.g., the antenna array relative to the transmitting or receiving device, or relative to some other orientation).

[0091] The first UE 115 or base station 105 may select communication resources for sidelink communication based on the distance between each UE 115 that reserves frequency resources in the same time window (e.g., TTI, channel occupancy, or COT). For example, the first UE 115 may select resources or (e.g., receive allocated resources from base station 105) to transmit sidelink communication to the second UE 115. When frequency resources are reserved (e.g., by the first UE 115 or base station 105) for sidelink communication, the first UE 115 or base station 105 may determine a distance parameter between the first UE 115 and one or more other UEs 115 (e.g., including a third UE 115) that have reserved frequency resources in that time window. The distance parameter may represent the physical distance between the first and third UEs 115, for example, based on broadcast sidelink information that may include location information. Additionally or alternatively, the distance parameter may be represented by the RSRP of the third UE 115 as measured by the first UE 115.

[0092] If the distance parameter is less than a threshold (e.g., the first and third UEs 115 are in similar locations), the first UE 115 or base station 105 may select frequency resources within that time window. If the distance parameter is greater than the threshold, the first UE 115 or base station 105 may select frequency resources based on one or more constraints. For example, the first UE 115 or base station 105 may select frequency resources within a different time window, or may select frequency resources at an offset from the frequency resources reserved by the third UE 115. Doing so can, for example, reduce general power leakage interference, because the first UE 115 can transmit sidelink communication within the time window or frequency resources with reduced interference from power leakage. If base station 105 selects resources based on the distance parameter, base station 105 may allocate resources to the first UE 115 via a control message. The first UE 115 can use the selected resources (e.g., selected by the first UE 115 or base station 105) to transmit sidelink communication to the second UE 115.

[0093] Figure 2 Examples of a wireless communication system 200 supporting frequency reuse for sidelink transmission according to various aspects of this disclosure are described. In some examples, the wireless communication system 200 may implement various aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a base station 105-a and UEs 115-a, 115-b, and 115-c, which may be referenced... Figure 1 Examples of base station 105 and UE 115 described herein. UE 115-a, 115-b, and 115-c may represent examples of UE 115 that can communicate using sidelink communication. For example, UE 115-a and 115-c can communicate using sidelink communication, and UE 115-b can communicate using sidelink communication with one or more UE 115s (e.g., with UE 115-a, UE 115-c, or one or more other UE 115s, or any combination thereof).

[0094] Some sidelink communications (e.g., V2X sidelink communications) can use licensed spectrum (e.g., shared spectrum in a licensed cellular band, or dedicated spectrum for Intelligent Transportation Systems (ITS)). In some cases, V2X or other sidelink communications may also use unlicensed spectrum, such as when licensed or ITS spectrum is unavailable in a geographic area. Unlicensed spectrum may be shared by other wireless communication technologies (e.g., Wi-Fi) and may also be associated with one or more conditions of spectrum use. For example, a portion of the channel bandwidth may be configured to be occupied by communications associated with UE115, which may be referred to as Occupied Channel Bandwidth (OCB). For example, transmit power from a device or UE115 may be distributed across a first portion (e.g., the majority of the channel bandwidth), but the device or UE115 may be assigned frequency resources for transmission on a second portion of the channel bandwidth that is smaller than the first portion. In one example, at least 99% of the transmit power of UE115 may be distributed across at least 80% of the channel bandwidth.

[0095] To cover the OCB, resources allocated to UE 115 (e.g., one or more resource blocks (RBs) included in a subchannel) may be interleaved with resources allocated to other UE 115 (e.g., one or more other RBs or subchannels) so that the frequency distribution of resources allocated to UE 115 satisfies the OCB. Resources allocated to UE 115 in this manner may be evenly spaced within the channel bandwidth to ensure OCB coverage. For example, frequency resources 210 for sidelink communication 205 between UE 115-a and UE 115-c may be distributed across frequency resources 210-a, 210-b, and 210-c within the channel bandwidth 215. Thus, each frequency resource 210 allocated for sidelink communication 205 may be interleaved with one or more other frequency resources 210 allocated to one or more other UE 115s (e.g., allocated to UE 115-b). Frequency resources 210 allocated to different sidelink communications 205 may be multiplexed in the same TTI 220, for example, using FDM technology. As described in this article, TTI 220 can represent channel occupancy, COT, timeslot, or any other time window.

[0096] Sidelink communication 205 (e.g., in unlicensed spectrum) can be transmitted, for example, without power control, because each UE 115 can be configured to transmit sidelink communication 205 by broadcasting it at the highest transmit power (e.g., the same or similar power for each UE 115). Some sidelink communication 205 received from a greater distance may be associated with lower received power compared to sidelink communication received from a closer distance (e.g., this may be referred to as the near-far effect). Accordingly, different frequency resources 210 within the same TTI 220 may be associated with different received power at UE 115 (such as UE 115-c). For example, UE 115-c may receive sidelink communication 205 with higher power from UE 115 closer to UE 115-c, and may receive sidelink communication 205 with lower power from UE 115 farther from UE 115-c.

[0097] Received power can be associated with in-band transmission, which can cause power leakage (e.g., less than the received power) to adjacent interleaved frequency resources 210 (e.g., interleaved RBs). For example, in-band transmission can represent the ratio of received power in unallocated frequency resources 210 to received power in allocated frequency resources 210. In-band transmission can include general power leakage to adjacent unallocated frequency resources 210, power leakage to the center of the frequency carrier, and power leakage to frequency resources 210 at relative or mirror locations within the carrier.

[0098] In some cases, power leakage (e.g., general power leakage to adjacent frequency resource 210) can disrupt or mask communication in adjacent frequency resource 210 due to proximity effects. For example, if the distance between UE 115-b and 115-c is less than the distance between UE 115-a and 115-c, the general power leakage from adjacent frequency resource 210 allocated to UE 115-b can be greater than or equal to the received power in frequency resource 210 allocated to sidelink communication 205. This power leakage can cause interference when receiving sidelink communication 205, resulting in lower communication quality and reliability and potentially leading to the loss of sidelink communication 205.

[0099] This disclosure provides techniques for reducing interference caused by power leakage by limiting the frequency resource 210 used for sidelink communication 205 based on the distance to another UE 115 (e.g., UE 115-b) that has reserved the frequency resource 210 in the same TTI 220. For example, UE 115-a may select resources or (e.g., receive allocated resources such as via control message 225 from base station 105-a) to transmit sidelink communication 205 to UE 115-c. When the frequency resource 210 is reserved within the TTI 220 (e.g., by UE 115-a or base station 105-a) for sidelink communication 205, UE 115-a or base station 105-a may determine a distance parameter between UE 115-a and one or more other UE 115s (e.g., including UE 115-b) that have reserved the frequency resource 210 in the TTI 220.

[0100] If the distance parameter is less than a threshold (e.g., two UEs 115 are in similar locations), UE 115-a or base station 105-a may select frequency resource 210 within TTI 220. This can, for example, reduce general power leakage interference because UEs 115-a and 115-b can be located at similar distances from UE 115-c, which reduces the near-far effect. If the distance parameter is greater than a threshold, UE 115-a or base station 105-a may select frequency resource 210 based on one or more constraints. For example, UE 115-a or base station 105-a may exclude frequency resources 210 that are close to frequency resources 210 that have been reserved or allocated to UE 115 that are farther away than the distance threshold (e.g., in adjacent RBs, within the same TTI 220, or within the same COT). In some cases, UE115-a or base station 105-a may select frequency resource 210 within a different TTI 220, or may select frequency resource 210 at an offset from the frequency resource reserved by UE 115 associated with a distance parameter greater than a threshold. This can, for example, reduce general power leakage interference, because UE 115-a can transmit sidelink communication 205 within TTI 220 or frequency resource 210 with reduced interference from general power leakage.

[0101] The distance parameter may represent the physical distance between two UEs 115 (e.g., distance 235) based, for example, on sidelink information that may include location information broadcast. Additionally or alternatively, the distance parameter may be represented by the RSRP received from another UE 115. For example, UE 115-a may determine the RSRP of UE 115-b or another UE 115 based on RSRP measurements taken during sidelink decoding. UE 115-a may determine its own location information and may also determine the location information of UE 115-b or another UE 115 based on sidelink decoding. In some examples, base station 105-a or another UE 115 may configure the distance parameters and distance parameter thresholds for UEs 115-a and 115-b, for example, via configuration signaling (e.g., Radio Resource Control (RRC) signaling, such as configuration message 230).

[0102] When selecting or reserving resources for sidelink communication 205, UE 115-a or base station 105-a may indicate reserved resources in one or more future TTIs 220. These one or more future TTIs 220 may include TTIs 220 adjacent to or contiguous to the TTI 220 used for sidelink communication 205, or may not be contiguous to the TTI 220 used for sidelink communication 205. The reserved resources in these one or more future TTIs 220 may also be based on distance parameters. For example, frequency resources 210 in these one or more future TTIs may be selected based on distance parameters and any limitations arising therefrom, as described herein. In some cases, the RSRP measured for UE 115-b or other UE 115 may be projected onto these one or more future TTIs 220 (e.g., to perform resource selection based on distance parameters). Other UEs 115 that decode the TTI 220 used for sidelink communication 205 can determine the resources reserved by UE 115-a or base station 105-a for the one or more future TTIs 220 (e.g., based on an indication of reserved resources) and can avoid selecting these reserved resources.

[0103] Resource selection can be triggered at UE 115-a or base station 105-a based on the arrival of sidelink packets for transmission (e.g., based on an indication of a sidelink packet transmitted by UE 115-a to base station 105-a). UE 115-a or base station 105-a can select resources identified as available within the resource selection window, for example, based on the time and / or frequency location of resources reserved for other UE 115 (e.g., based on sidelink decoding). For example, UE 115-a or base station 105-a can exclude resources already reserved for other UE 115 from selection, and the remaining resources in the resource selection window can be identified as available resources. In some cases, UE 115-a or base station 105-a can also exclude resources that have not yet been reserved for other UE 115 but are close to resources reserved by UE 115 that are more than a distance threshold away (e.g., in adjacent RBs, the same TTI, or the same COT). For example, resources in a time slot that include resources reserved by UE 115 that are more than a distance threshold can be identified as unavailable and excluded from resource selection. Alternatively, resources in an RB that are adjacent to resources reserved by UE 115 that are more than a distance threshold can be excluded from resource selection.

[0104] If base station 105-a performs resource allocation based on distance parameters, base station 105-a can allocate resources to UE 115-a via control message 225. UE 115-a can use the selected resources (e.g., selected by UE 115-a or base station 105-a) to transmit sidelink communication 205 to UE 115-c. As described herein, using sidelink resources selected based on distance parameters can reduce interference and improve communication quality and reliability.

[0105] Figure 3A and 3B Examples of resource selection schemes 301 and 302 supporting frequency reuse for sidelink transmission according to various aspects of this disclosure are described. In some examples, resource selection schemes 301 and 302 may be implemented by or by various aspects of wireless communication system 100 or 200. For example, resource selection schemes 301 and 302 may be implemented by a first UE 115 or a base station 105, which may be referenced Figure 1 and 2 Examples of UE 115 and base station 105 described. See reference... Figure 2 As described, the first UE 115 or base station 105 may use resource selection scheme 301 or 302 to select resources for sidelink communication based on distance parameters.

[0106] In the first example, the first UE 115 or base station 105 may determine the distance parameter based on the RSRP of the second UE 115 measured at the first UE 115. For example, the first UE 115 may measure the RSRP of the second UE 115 in TTI 315-a or TTI 315-d (e.g., based on transmissions from the second UE 115 using sidelink resource 305). The RSRP may be based on reference signals transmitted by the second UE 115, such as demodulation reference signal (DMRS) or channel state information reference signal (CSI-RS), etc.

[0107] If base station 105 selects sidelink resource 310 for sidelink communication, then first UE 115 may transmit an indication of RSRP for second UE 115 to base station 105. In some cases, base station 105 may configure first UE 115 to report RSRP, and in some cases, first UE 115 may report RSRP autonomously. In some cases, first UE 115 may determine whether RSRP meets a threshold and report this determination to base station 105. A larger RSRP measured at first UE 115 may indicate that second UE 115 is closer to first UE 115 (e.g., conversely, a smaller RSRP may indicate that second UE 115 is farther away). See reference Figure 2 As described, the first UE 115 or base station 105 may select sidelink resource 310 for sidelink communication of the first UE 115 based on distance parameters and thresholds. If the distance parameters are based on or include RSRP, the thresholds may also be based on or include RSRP.

[0108] If the distance parameter is below or meets a threshold (e.g., indicating that the distance between the two UEs 115 is below a threshold), the first UE 115 or base station 105 may select to include sidelink resources 310 in the TTI 315 reserved for the sidelink resources 305 of the second UE 115. For example, if the RSRP of the second UE 115 is greater than the RSRP threshold, the first UE 115 or base station 105 may identify and select to include unreserved or unallocated resources (e.g., available resources) in the TTI 315 reserved for the sidelink resources 305 of the second UE 115, such as in... Figure 3A The TTI 315-b or 315-c as explained in the document.

[0109] If the distance parameter is greater than or does not meet a threshold (e.g., indicating that the distance between the two UEs 115 is greater than a threshold), the first UE 115 or base station 105 may perform selection of sidelink resources 310 based on one or more constraints. For example, if the RSRP of the second UE 115 is less than the RSRP threshold, the first UE 115 or base station 105 may exclude resources from resource selection, including any TTI 315 from sidelink resources 305 reserved for the second UE 115, such as in... Figure 3B In TTIs 315-d and 315g as explained herein, the first UE 115 or base station 105 may choose not to include sidelink resources 310 in another TTI 315 (e.g., TTIs 315-e and 315-f) that are reserved for the sidelink resources 305 of the second UE 115.

[0110] In some cases, if the RSRP of the second UE 115 is greater than the RSRP threshold, the first UE 115 or the base station 105 may mark resources in TTI 315 that are frequency-adjacent to the sidelink resource 305 reserved by the second UE 115 as unavailable, and may mark resources in TTI 315 that are not frequency-adjacent to the sidelink resource 305 reserved by the second UE 115 as available. For example, the first UE 115 or the base station 105 may select resources from TTI 315 that include the sidelink resource 305 reserved for the second UE 115, but at a frequency offset 320 from the sidelink resource 305 (e.g., so that sidelink resources 310 and 305 may not be frequency-adjacent), such as in... Figure 3A The TTI 315-b and 315-c are explained in the text.

[0111] Thresholds (e.g., RSRP thresholds) may be configured, for example, via configuration signaling (e.g., RRC signaling) from base station 105 or another UE 115, or may be pre-configured and stored at base station 105 or the first UE 115. If the first UE 115 or base station 105 determines that TTI 315-a or 315-d includes sidelink resources reserved for multiple UEs 115, then base station 105 or UE 115 may determine distance parameters based on one of the multiple UEs 115 (e.g., a reference UE 115, such as that represented by the second UE 115). The reference UE 115 may represent the UE 115 that initiated the COT used by the first UE 115 or the UE 115 with the minimum RSRP as measured by the first UE 115 (e.g., the furthest UE 115).

[0112] In the second example, the first UE 115 or base station 105 may determine distance parameters based on the locations of the first UE 115 and the second UE 115. For example, the second UE 115 may signal its location (e.g., absolute location or zoned location) when transmitting sidelink communication via sidelink resource 305 (such as TTI 315-a or 315-d). The first UE 115 may decode the sidelink communication from the second UE 115 and may determine the distance between the first UE 115 and the second UE 115 based on the received location of the second UE 115 and the location of the first UE 115.

[0113] If base station 105 selects sidelink resource 310 for sidelink communication, then first UE 115 may transmit to base station 105 an indication of the distance from first UE 115 to second UE 115, the location of first UE 115, the location of second UE 115, or any combination thereof. In some cases, base station 105 may configure first UE 115 and / or second UE 115 to report their respective locations and / or distances, and in some cases, first UE 115 and / or second UE 115 may autonomously report their respective locations and / or distances. In some cases, first UE 115 may determine whether the distance meets a threshold and report this determination to base station 105. A smaller distance may indicate that second UE 115 is closer to first UE 115. (See reference...) Figure 2 As described, the first UE 115 or base station 105 may select sidelink resource 310 for sidelink communication of the first UE 115 based on distance parameters and thresholds. If the distance parameters are based on or include distance, the thresholds may also be based on or include distance.

[0114] If the distance parameter is below or meets a threshold (e.g., indicating that the distance between the two UEs 115 is below a threshold), the first UE 115 or base station 105 can identify that unreserved resources in TTI 315, including sidelink resources 305 reserved for the second UE 115, are available and can select the available resources in TTI 315. For example, if the distance is less than the distance threshold, the first UE 115 or base station 105 can select sidelink resources 310 in TTI 315, including sidelink resources 305 reserved for the second UE 115, such as in... Figure 3A The TTI 315-b or 315-c as explained in the document.

[0115] If the distance parameter is greater than or does not meet a threshold (e.g., indicating that the distance between the two UEs 115 is greater than a threshold), the first UE 115 or base station 105 may perform selection of sidelink resources 310 based on one or more constraints. For example, if the distance is greater than a distance threshold, the first UE 115 or base station 105 may exclude resources from any TTI 315, including sidelink resources 305 reserved for the second UE 115, such as in... Figure 3B In TTIs 315-d and 315-g as explained herein, in some cases, if the distance is greater than a distance threshold, the first UE 115 or base station 105 may mark resources in TTI 315 that are frequency-adjacent to the sidelink resources reserved by the second UE 115 as unavailable, and may mark resources in TTI 315 that are not frequency-adjacent to the sidelink resources reserved by the second UE 115 as available. For example, the first UE 115 or base station 105 may select resources from TTI 315, including those reserved for the sidelink resources 305 of the second UE 115, but at a frequency offset of 320 from the sidelink resources 305, such as in... Figure 3A The TTI 315-b and 315-c are explained in the text.

[0116] The threshold (e.g., a distance threshold) may be configured, for example, via configuration signaling (e.g., RRC signaling) from base station 105 or another UE 115, or may be pre-configured. If the first UE 115 or base station 105 determines that TTI 315-a or 315-d includes sidelink resources reserved for multiple UEs 115, then base station 105 or UE 115 may determine the distance parameter based on one of the multiple UEs 115 (e.g., a reference UE 115, such as that represented by the second UE 115). The reference UE 115 may represent the UE 115 that initiated the COT used by the first UE 115 or the UE 115 with the maximum distance from the first UE 115 (e.g., the farthest UE 115).

[0117] In the third example, the first UE 115 or base station 105 may determine distance parameters based on the location of the first UE 115 and the location of the COT used to select sidelink resources 310 for the first UE 115. The COT may span several TTIs 315 and indicated frequency ranges, and may be associated, for example, with one or more other UEs 115 (e.g., including the second UE 115). When the COT is initiated by a UE 115 (e.g., the second UE 115), the COT may be associated with location information. The location of the COT may be represented by the location of the UE 115 (e.g., or RSU) that initiated the COT, its absolute geographic location, or its zone location (e.g., as indicated by a zone identifier (ID)). The location of the COT may be transmitted, for example, as part of the COT information within one or more sidelink control information (SCI) messages transmitted by one or more UEs 115 sharing the COT. The base station 105 or the first UE 115 may determine distance parameters based on the distance between the location of the COT and the location of the first UE 115.

[0118] If the distance parameter is below or meets a threshold (e.g., indicating that the distance between the first UE 115 and the location of the COT is below a threshold), then the first UE 115 or base station 105 may select sidelink resource 310 from the TTI 315 included in the COT (e.g., including sidelink resource 305 reserved for the second UE 115). In one example, if the distance is less than the distance threshold, then the first UE 115 or base station 105 may select sidelink resource 310 from the TTI 315 included in the COT, such as in... Figure 3A The TTI 315-b or 315-c described herein includes sidelink resource 305. In another example, if the zone ID of the first UE is the same as the zone ID of the COT location, then the first UE 115 or base station 105 may select sidelink resource 310 included in the TTI 315 of the COT, such as in... Figure 3A The TTI 315-b or 315-c described herein includes side link resource 305.

[0119] If the distance parameter is greater than or does not meet a threshold (e.g., indicating that the distance between the first UE 115 and the location of the COT is greater than a threshold), the first UE 115 or base station 105 may perform selection of the counterpart link resource 310 based on one or more constraints. For example, if the distance is greater than a distance threshold, the first UE 115 or base station 105 may suppress transmission in the COT; for example, the first UE 115 or base station 105 may exclude resources including the COT from resource selection or resource allocation, such as in... Figure 3B The TTI 315-a and 315-g are explained in the text.

[0120] The threshold distance (e.g., distance threshold) from the COT location can be configured, for example, as part of the COT sharing information, or can be configured via configuration signaling (e.g., RRC signaling) from base station 105 or another UE 115, or can be pre-configured.

[0121] If base station 105 selects sidelink resource 310, base station 105 may allocate the resource to first UE 115. First UE 115 may use the selected resource (e.g., selected by first UE 115 or base station 105) to transmit sidelink communication to third UE 115. As described herein, using sidelink resource 310 selected based on distance parameters can reduce interference and improve communication quality and reliability.

[0122] Figure 4 Examples of a process flow 400 supporting frequency reuse for sidelink transmission according to various aspects of this disclosure are described. In some examples, process flow 400 may be implemented by or by various aspects of wireless communication system 100 or 200. For example, process flow 400 may be implemented by base station 105-b and UEs 115-d and 115-e, which may be referenced Figure 1 Examples of base station 105 and UE 115 described in -3. See reference... Figure 2 As described in section 3, UE115-d or base station 105-b can use various aspects of process flow 400 to select resources for sidelink communication based on distance parameters.

[0123] In the following description of process flow 400, operations between base station 105-b and UEs 115-d and 115-e may be transmitted in a different order than shown, or operations performed by base station 105-b and UEs 115-d and 115-e may be performed in a different order or at different times. For example, certain operations may be excluded from process flow 400, or other operations may be added to process flow 400. Although base station 105-b and UEs 115-d and 115-e are shown performing operations of process flow 400, some aspects of some operations may also be performed by one or more other wireless devices.

[0124] In some scenarios, at 405, base station 105-b may transmit a configuration instruction to UE 115-d, UE 115-e, or both. This configuration may instruct, for example, UE 115-d and 115-e to report information for determining distance parameters, or it may instruct UE 115-d (e.g., or UE 115-e) to report whether the distance parameters meet a threshold. Information for determining distance parameters may include, for example, the RSRP of UE 115-e measured by UE 115-d, the location of one or both of UE 115-d and 115-e, the distance between UE 115-d and 115-e, or any combination thereof. In some scenarios, this configuration may instruct distance parameters for selecting resources (e.g., RSRP, distance, or COT location), and / or may instruct thresholds for distance parameters for selecting resources (e.g., RSRP threshold, distance threshold, or COT location threshold). In some cases, this configuration may indicate whether UE 115-d or base station 105-b selects resources for UE 115-d. In some cases, UE 115-d, UE 115-e, or both may be pre-configured with some or all of the information included in this configuration. In some cases, another UE 115 may transmit instructions regarding this configuration to UE 115-d, UE 115-e, or both.

[0125] In 410, in some cases, UE 115-e may broadcast a sidelink transmission that can be received by UE 115-d. UE 115-d may use the sidelink transmission to determine or measure the RSRP of UE 115-e, or may use the sidelink transmission to identify the location of UE 115-e (e.g., using location information associated with the sidelink transmission).

[0126] At 415 and 420, UE 115-e and UE 115-d may report information to base station 105-b for determining distance parameters. For example, UE 115-e or UE 115-d, or both, may report, such as the RSRP of UE 115-e as measured by UE 115-d, the location of one or both of UE 115-d and 115-e, the distance between UE 115-d and 115-e, or any combination thereof. Additionally or alternatively, UE 115-d may report whether the distance parameters meet (e.g., less than or greater than) a threshold.

[0127] In step 425, UE 115-d or base station 105-b can determine whether the distance parameter meets a threshold (e.g., greater than or less than a threshold). In some examples described herein, UE 115-d or base station 105-b can determine whether the RSRP of UE 115-e is greater than the RSRP threshold. In some examples described herein, UE 115-d or base station 105-b can determine whether the distance between UE 115-e and UE 115-d is less than a threshold or whether the distance between UE 115-d and the COT location is less than a threshold.

[0128] At 430, UE 115-d or base station 105-b may perform a selection or allocation procedure for frequency resources used for frequency-reused sidelink communication at UE 115-d. UE 115-d or base station 105-b may perform the selection or allocation procedure within a time window (e.g., TTI or COT) that includes communication resources allocated to UE 115-e or another UE 115. UE 115-d or base station 105-b may perform the selection procedure based on determining whether a distance parameter meets a threshold. For example, if the distance parameter meets the threshold, UE 115-d or base station 105-b may identify available frequency communication resources and select frequency communication resources within the time window. If the distance parameter does not meet the threshold (e.g., greater than or less than the threshold), UE 115-d or base station 105-b may identify frequency communication resources that are frequency-adjacent to the communication resources allocated to UE 115-e, or within the time window, that are not available for allocation. UE 115-d or base station 105-b can identify available resources within the time window or a different time window, and can select frequency communication resources from the available resources (e.g., based on one or more constraints, such as using a different time window or using a frequency offset between the frequency communication resources and the communication resources allocated to UE 115-e).

[0129] At 435, if base station 105-b allocates frequency communication resources, base station 105-b may allocate resources for communication via frequency-multiplexed sidelinks to UE 115-d based on a selection or allocation process (e.g., allocating selected frequency communication resources). For example, base station 105-b may transmit an indication of the selected frequency communication resources to UE 115-d (e.g., via a control message).

[0130] At 440, UE 115-d may transmit frequency-multiplexed sidelink communication based on a selection process (e.g., using selected or allocated frequency communication resources). For example, UE 115-d may use frequency communication resources selected by UE 115-d or allocated by base station 105-b to transmit frequency-multiplexed sidelink communication to another UE 115.

[0131] Figure 5 A block diagram 500 of an apparatus 505 supporting frequency multiplexing for sidelink transmissions according to various aspects of this disclosure is shown. Apparatus 505 may be an example of various aspects of a UE 115 as described herein. Apparatus 505 may include a receiver 510, a communication manager 515, and a transmitter 520. Apparatus 505 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0132] Receiver 510 can 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 frequency multiplexing for sidelink transmission). This information can be transmitted to other components of device 505. Receiver 510 can be a reference... Figure 8 Examples of various aspects of the transceiver 820 described. The receiver 510 may utilize a single antenna or an array of antennas.

[0133] Communication manager 515 can identify distance parameters associated with the first UE and the second UE, determine whether the distance parameter is less than a threshold, perform a selection process for frequency resources for frequency-multiplexed sidelink communication within a time window including the communication resources allocated to the second UE and based on the determination that the distance parameter is less than the threshold, and transmit the frequency-multiplexed sidelink communication based on the selection process. Communication manager 515 may be an example of aspects of communication manager 810 described herein.

[0134] The communication manager 515 or its sub-components may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functionality of the communication manager 515 or its sub-components may be performed by a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), 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.

[0135] The communication manager 515 or its sub-components may be physically located at various locations, including being distributed such 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 this disclosure, the communication manager 515 or its sub-components may be separate and distinct components. In some examples, according to various aspects of this disclosure, the communication manager 515 or its sub-components may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, transceivers, network servers, other computing devices, one or more other components described in this disclosure, or combinations thereof).

[0136] Transmitter 520 can transmit signals generated by other components of device 505. In some examples, transmitter 520 may coexist with receiver 510 in a transceiver module. For example, transmitter 520 may be a reference... Figure 8 Examples of various aspects of the transceiver 820 described. The transmitter 520 may utilize a single antenna or an array of antennas.

[0137] The actions performed by the communication manager 515, etc., described herein can be implemented to achieve one or more potential advantages. For example, the communication manager 515 can improve communication quality and reduce interference at the wireless device (e.g., UE 115) by determining the frequency resources used for sidelink communication based on the distance between the two UEs 115. The improvement in communication quality can be based on improved link performance and reduced overhead obtained by determining the frequency resources used for sidelink communication according to the distance between the two UEs 115. Accordingly, the communication manager 515 can save power and increase battery life at the wireless device (e.g., UE 115) by strategically improving the communication quality at the wireless device (e.g., UE 115).

[0138] Figure 6 A block diagram 600 of a device 605 supporting frequency multiplexing for sidelink transmissions according to various aspects of this disclosure is shown. Device 605 may be an example of aspects of device 505 or UE 115 as described herein. Device 605 may include a receiver 610, a communication manager 615, and a transmitter 635. Device 605 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0139] Receiver 610 can 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 frequency multiplexing for sidelink transmission). This information can be transmitted to other components of device 605. Receiver 610 can be a reference... Figure 8 Examples of various aspects of the transceiver 820 described. The receiver 610 may utilize a single antenna or an array of antennas.

[0140] Communication manager 615 may be an example of aspects of communication manager 515 as described herein. Communication manager 615 may include distance threshold component 620, resource selection component 625, and sidelink communication component 630. Communication manager 615 may be an example of aspects of communication manager 810 as described herein.

[0141] The distance threshold component 620 can identify the distance parameter associated with the first UE and the second UE, and determine whether the distance parameter is less than a threshold.

[0142] Resource selection component 625 can perform a selection process for frequency resources used for communication via frequency-reused sidelinks within a time window that includes communication resources allocated to the second UE and based on whether a distance parameter is less than a threshold.

[0143] The sidelink communication component 630 can transmit the frequency-multiplexed sidelink communication based on this selection process.

[0144] Transmitter 635 can transmit signals generated by other components of device 605. In some examples, transmitter 635 may coexist with receiver 610 in a transceiver module. For example, transmitter 635 may be a reference... Figure 8 Examples of various aspects of the transceiver 820 described. The transmitter 635 may utilize a single antenna or an array of antennas.

[0145] The processor of the wireless device (e.g., controls receiver 610, transmitter 635, or as per reference) Figure 8 The described transceiver 820 can improve communication reliability and quality. The improved communication quality, compared to other systems and technologies that, for example, do not support determining frequency resources for sidelink communication based on the distance between two UEs 115 (which degrades communication quality and increases power consumption), can reduce power consumption (e.g., via implementation reference). Figure 7 (The described system components). Furthermore, the processor of UE 115 can identify one or more aspects of the distance parameters or distance parameter thresholds. The processor of the wireless device can use the distance parameters or distance parameter thresholds to perform one or more actions, which can result in improved communication quality and power consumption, power savings and increased battery life at the wireless device (e.g., by strategically supporting selective resource allocation, which can improve communication quality), and other benefits.

[0146] Figure 7 A block diagram 700 of a communication manager 705 supporting frequency multiplexing for sidelink transmissions according to various aspects of this disclosure is shown. The communication manager 705 may be an example of aspects of the communication manager 515, communication manager 615, or communication manager 810 described herein. The communication manager 705 may include a distance threshold component 710, a resource selection component 715, a sidelink communication component 720, and a distance parameter component 725. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0147] The distance threshold component 710 can identify a distance parameter associated with the first UE and the second UE, and determine whether the distance parameter is less than a threshold. In some examples, the distance threshold component 710 can determine that the distance parameter is less than a threshold. In some examples, the distance threshold component 710 can determine that the distance parameter is less than a threshold based on the fact that the segment ID associated with the first UE is the same segment ID associated with the channel occupancy time. In some examples, the distance threshold component 710 can receive configuration signaling indicating a threshold.

[0148] Resource selection component 715 can perform a selection process for frequency resources used for communication via frequency-multiplexed sidelinks within a time window that includes communication resources allocated to the second UE and based on whether a distance parameter is less than a threshold. In some cases, the set of UEs, including the second UE, is allocated corresponding communication resources within the time window.

[0149] In some examples, resource selection component 715 may select frequency resources within a time window for frequency-multiplexed sidelink communication based on a distance parameter being less than a threshold. In some examples, resource selection component 715 may identify restrictions on frequency resources used for frequency-multiplexed sidelink communication based on a distance parameter being greater than a threshold. In some examples, resource selection component 715 may select frequency resources for frequency-multiplexed sidelink communication based on this restriction.

[0150] In some examples, the resource selection component 715 may exclude frequency resources within the time window from candidate resources for selecting frequency resources based on this constraint. In some examples, the resource selection component 715 may select frequency resources within the time window that are offset in frequency from the communication resources allocated to the second UE for frequency-multiplexed sidelink communication based on this constraint. In some examples, the resource selection component 715 may receive configuration signaling indicating the frequency offset.

[0151] The sidelink communication component 720 can transmit the frequency-multiplexed sidelink communication based on this selection process.

[0152] The distance parameter component 725 may determine a distance parameter based on a measurement of the RSRP from the second UE, wherein the distance parameter and threshold include the corresponding RSRP. In some examples, the distance parameter component 725 may determine a distance parameter based on the location of the first UE and an indication of the location of the second UE, wherein the distance parameter and threshold include the corresponding distance. In some examples, the distance parameter component 725 may determine a distance parameter based on the location of the first UE and the location of the COT used by the second UE, wherein the distance parameter and threshold include the corresponding distance. In some cases, the location of the COT includes the location of the radio device initiating the COT. In some cases, the location of the COT includes the geographic location or geographic region associated with the COT. In some cases, the location of the COT is received via COT sharing information or configured for the COT.

[0153] In some cases, the UE set, including the second UE, is allocated corresponding communication resources within a time window. In some cases, the second UE in the UE set has the minimum RSRP relative to the first UE. In some cases, the second UE in the UE set has the maximum distance from the first UE. In some cases, the second UE initiates a COT used by both the first and second UEs.

[0154] Figure 8 A diagram of a system 800 including a device 805 supporting frequency multiplexing for sidelink transmissions according to various aspects of this disclosure is shown. Device 805 may be an example of device 505, device 605, or UE 115 as described herein, or a component including such devices. Device 805 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a communication manager 810, an I / O controller 815, a transceiver 820, an antenna 825, a memory 830, and a processor 840. These components may be in electronic communication via one or more buses (e.g., bus 845).

[0155] The communication manager 810 can identify distance parameters associated with the first UE and the second UE, determine whether the distance parameter is less than a threshold, perform a selection process for frequency resources for frequency-multiplexed sidelink communication within a time window including the communication resources allocated to the second UE and based on the determination that the distance parameter is less than the threshold, and transmit the frequency-multiplexed sidelink communication based on the selection process.

[0156] The I / O controller 815 manages the input and output signals of the device 805. The I / O controller 815 can also manage peripheral devices not integrated into the device 805. In some cases, the I / O controller 815 may represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 815 may utilize an operating system, such as... Or another known operating system. In other cases, the I / O controller 815 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 815 may be implemented as part of a processor. In some cases, a user may interact with the device 805 via the I / O controller 815 or via hardware components controlled by the I / O controller 815.

[0157] Transceiver 820 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 820 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 820 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna.

[0158] In some cases, a wireless device may include a single antenna 825. However, in other cases, the device may have more than one antenna 825, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0159] Memory 830 may include random access memory (RAM) and read-only memory (ROM). Memory 830 may store computer-readable, computer-executable code 835, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 830 may particularly include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0160] Processor 840 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 840 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 840. Processor 840 may be configured to execute computer-readable instructions stored in memory (e.g., memory 830) to cause device 805 to perform various functions (e.g., functions or tasks supporting frequency multiplexing for sidelink transmissions).

[0161] Code 835 may include instructions for implementing various aspects of this disclosure, including instructions for supporting wireless communication. Code 835 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 835 may not be directly executed by processor 840, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0162] Figure 9 A block diagram 900 of an apparatus 905 supporting frequency multiplexing for sidelink transmission according to various aspects of this disclosure is shown. Apparatus 905 may be an example of various aspects of base station 105 as described herein. Apparatus 905 may include a receiver 910, a communication manager 915, and a transmitter 920. Apparatus 905 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0163] Receiver 910 can 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 frequency multiplexing for sidelink transmission). This information can be transmitted to other components of device 905. Receiver 910 can be a reference... Figure 12 Examples of various aspects of the transceiver 1220 described. The receiver 910 may utilize a single antenna or an array of antennas.

[0164] Communication manager 915 may identify distance parameters associated with a first UE and a second UE, determine whether the distance parameter is less than a threshold, perform a selection process for frequency resources for frequency-multiplexed sidelink communication for the first UE within a time window including communication associated with the second UE and based on the determination that the distance parameter is less than the threshold, and allocate resources to the first UE for the frequency-multiplexed sidelink communication based on the selection process. Communication manager 915 may be an example of aspects of communication manager 1210 described herein.

[0165] The communication manager 915 or its sub-components may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functionality of the communication manager 915 or its sub-components may be performed by a general-purpose processor, DSP, ASIC, 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.

[0166] The communication manager 915 or its sub-components may be physically located at various locations, including being distributed such 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 this disclosure, the communication manager 915 or its sub-components may be separate and distinct components. In some examples, according to various aspects of this disclosure, the communication manager 915 or its sub-components may be combined with one or more other hardware components (including, but not limited to, I / O components, transceivers, network servers, another computing device, one or more other components described in this disclosure, or combinations thereof).

[0167] Transmitter 920 can transmit signals generated by other components of device 905. In some examples, transmitter 920 may coexist with receiver 910 in a transceiver module. For example, transmitter 920 may be a reference... Figure 12 Examples of various aspects of the transceiver 1220 described. The transmitter 920 may utilize a single antenna or an array of antennas.

[0168] Figure 10 A block diagram 1000 of an apparatus 1005 supporting frequency multiplexing for sidelink transmission according to aspects of this disclosure is shown. Apparatus 1005 may be an example of aspects of apparatus 905 or base station 105 as described herein. Apparatus 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1035. Apparatus 1005 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0169] Receiver 1010 can 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 frequency multiplexing for sidelink transmission). This information can be transmitted to other components of device 1005. Receiver 1010 can be a reference... Figure 12 Examples of various aspects of the transceiver 1220 described herein. The receiver 1010 may utilize a single antenna or an array of antennas.

[0170] Communication manager 1015 may be an example of aspects of communication manager 915 as described herein. Communication manager 1015 may include sidelink distance threshold component 1020, sidelink resource selection component 1025, and sidelink resource allocation component 1030. Communication manager 1015 may be an example of aspects of communication manager 1210 as described herein.

[0171] The sidelink distance threshold component 1020 can identify the distance parameter associated with the first UE and the second UE, and determine whether the distance parameter is less than a threshold.

[0172] The sidelink resource selection component 1025 can perform a frequency resource selection process for frequency-reused sidelink communication for the first UE within a time window including communication associated with the second UE and based on whether a distance parameter is less than a threshold.

[0173] The sidelink resource allocation component 1030 can allocate resources for frequency-reused sidelink communication to the first UE based on this selection process.

[0174] Transmitter 1035 can transmit signals generated by other components of device 1005. In some examples, transmitter 1035 may coexist with receiver 1010 in a transceiver module. For example, transmitter 1035 may be a reference... Figure 12 Examples of various aspects of the transceiver 1220 described. The transmitter 1035 may utilize a single antenna or an array of antennas.

[0175] Figure 11 A block diagram 1100 of a communication manager 1105 supporting frequency multiplexing for sidelink transmissions according to various aspects of this disclosure is shown. The communication manager 1105 may be an example of aspects of the communication manager 915, communication manager 1015, or communication manager 1210 described herein. The communication manager 1105 may include a sidelink distance threshold component 1110, a sidelink resource selection component 1115, a sidelink resource allocation component 1120, and a sidelink distance parameter component 1125. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0176] The sidelink distance threshold component 1110 can identify a distance parameter associated with the first UE and the second UE, and determine whether the distance parameter is less than a threshold. In some examples, the sidelink distance threshold component 1110 can determine that the distance parameter is less than a threshold. In some examples, the sidelink distance threshold component 1110 can determine that the distance parameter is greater than a threshold.

[0177] The sidelink resource selection component 1115 can perform a frequency resource selection process for frequency-reused sidelink communication for the first UE within a time window including communication associated with the second UE and based on whether a distance parameter is less than a threshold.

[0178] The sidelink resource allocation component 1120 may allocate resources for frequency-reused sidelink communication to the first UE based on this selection process. In some examples, the sidelink resource allocation component 1120 may allocate frequency resources within a time window for frequency-reused sidelink communication based on a distance parameter being less than a threshold. In some examples, the sidelink resource allocation component 1120 may identify restrictions on frequency resources for frequency-reused sidelink communication based on a distance parameter being greater than a threshold. In some examples, the sidelink resource allocation component 1120 may allocate frequency resources for frequency-reused sidelink communication based on restrictions.

[0179] In some examples, the sidelink resource allocation component 1120 may allocate frequency resources within a second time window, different from the current time window, for frequency-multiplexed sidelink communication based on constraints. In some examples, the sidelink resource allocation component 1120 may allocate frequency resources within the time window for frequency-multiplexed sidelink communication that are offset in frequency from the communication resources allocated to the second UE, based on constraints. In some examples, the sidelink resource allocation component 1120 may convey configuration signaling indicating the frequency offset.

[0180] The sidelink distance parameter component 1125 can determine a distance parameter based on an indication of the RSRP for the second UE received from the first UE, wherein the distance parameter and threshold include the corresponding RSRP. In some examples, the sidelink distance parameter component 1125 can transmit to both the first and second UEs an indication to report a measurement of the RSRP used to determine the distance parameter. In some cases, a set of UEs including the second UE is allocated corresponding communication resources within a time window, and the second UE has the minimum RSRP relative to the first UE within that set of UEs.

[0181] In some examples, the sidelink distance parameter component 1125 may determine a distance parameter based on received indications of the location of a first UE and the location of a second UE, wherein the distance parameter and a threshold include a corresponding distance. In some examples, the sidelink distance parameter component 1125 may transmit to the first UE and the second UE an indication to report a measurement of the location used to determine the distance parameter. In some cases, a set of UEs including the second UE is allocated corresponding communication resources within a time window, and the second UE has the maximum distance from the first UE within this set of UEs. In some cases, the second UE initiates a COT used by both the first UE and the second UE.

[0182] In some examples, the sidelink distance parameter component 1125 may receive distance parameters from the first UE based on the location or RSRP of the second UE determined by the first UE.

[0183] Figure 12A diagram of a system 1200 including a device 1205 supporting frequency multiplexing for sidelink transmissions according to various aspects of this disclosure is shown. Device 1205 may be an example of device 905, device 1005, or base station 105 as described herein, or a component including such devices. Device 1205 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a communication manager 1210, a network communication manager 1215, a transceiver 1220, an antenna 1225, a memory 1230, a processor 1240, and an inter-station communication manager 1245. These components may be in electronic communication via one or more buses (e.g., bus 1250).

[0184] The communication manager 1210 can identify distance parameters associated with the first UE and the second UE, determine whether the distance parameter is less than a threshold, perform a selection process for frequency resources for frequency-reused sidelink communication for the first UE within a time window including communication associated with the second UE and based on determining whether the distance parameter is less than the threshold, and allocate resources for frequency-reused sidelink communication to the first UE based on the selection process.

[0185] The network communication manager 1215 can manage communication with the core network (e.g., via one or more wired backhaul links). For example, the network communication manager 1215 can manage the delivery of data communication by client devices (such as one or more UEs 115).

[0186] Transceiver 1220 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 1220 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1220 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna.

[0187] In some cases, the wireless device may include a single antenna 1225. However, in other cases, the device may have more than one antenna 1225, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0188] Memory 1230 may include RAM, ROM, or a combination thereof. Memory 1230 may store computer-readable code 1235 including instructions that, when executed by a processor (e.g., processor 1240), cause the device to perform the various functions described herein. In some cases, memory 1230 may, in particular, include a BIOS that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0189] Processor 1240 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1240 may be configured to use a memory controller to operate a memory array. In some cases, the memory controller may be integrated into processor 1240. Processor 1240 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1230) to cause device 1205 to perform various functions (e.g., functions or tasks supporting frequency multiplexing for sidelink transmissions).

[0190] Inter-site communication manager 1245 manages communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with UE 115. For example, inter-site communication manager 1245 may coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, inter-site communication manager 1245 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0191] Code 1235 may include instructions for implementing various aspects of this disclosure, including instructions for supporting wireless communication. Code 1235 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1235 may not be directly executed by processor 1240, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0192] Figure 13 A flowchart illustrating a method 1300 for supporting frequency multiplexing for sidelink transmission according to various aspects of this disclosure is shown. Operation of method 1300 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1300 may be implemented by, as referred to... Figures 5 to 8 The described communication manager is used to perform this function. In some examples, the first UE can execute a set of instructions to control the functional elements of the first UE to perform the following functions. Additionally or alternatively, the UE can use dedicated hardware to perform aspects of the following functions.

[0193] At 1305, the first UE can identify distance parameters associated with the first UE and the second UE. Operation of 1305 can be performed according to the methods described herein. In some examples, aspects of the operation of 1305 can be determined by referring to... Figures 5 to 8 The distance threshold component described is used for execution.

[0194] At 1310, the first UE can determine whether the distance parameter is less than a threshold. The operation of 1310 can be performed according to the method described herein. In some examples, aspects of the operation of 1310 can be determined by referring to... Figures 5 to 8 The distance threshold component described is used for execution.

[0195] At 1315, the first UE may perform a selection process for frequency resources for communication via frequency-multiplexed sidelinks within a time window including the communication resources allocated to the second UE and based on determining whether the distance parameter is less than a threshold. The operation of 1315 may be performed according to the method described herein. In some examples, aspects of the operation of 1315 may be as described in reference... Figures 5 to 8 The resource selection component described is used for execution.

[0196] At 1320, the first UE can transmit the frequency-multiplexed sidelink communication based on this selection process. The operation of 1320 can be performed according to the methods described herein. In some examples, aspects of the operation of 1320 can be determined by referring to... Figures 5 to 8 The described sidelink communication component is used to perform this.

[0197] Figure 14 A flowchart illustrating a method 1400 for supporting frequency multiplexing for sidelink transmission according to various aspects of this disclosure is shown. Operation of method 1400 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1400 may be implemented by, as referred to... Figures 5 to 8 The described communication manager is used to perform this function. In some examples, the first UE can execute a set of instructions to control the functional elements of the first UE to perform the following functions. Additionally or alternatively, the UE can use dedicated hardware to perform aspects of the following functions.

[0198] At 1405, the first UE can identify distance parameters associated with the first UE and the second UE. Operation of 1405 can be performed according to the methods described herein. In some examples, aspects of operation of 1405 can be determined by reference to... Figures 5 to 8 The distance threshold component described is used for execution.

[0199] At 1410, the first UE can determine whether the distance parameter is less than a threshold. The operation of 1410 can be performed according to the method described herein. In some examples, aspects of the operation of 1410 can be determined by referring to... Figures 5 to 8 The distance threshold component described is used for execution.

[0200] At step 1415, the first UE can determine that the distance parameter is less than a threshold. The operation at step 1415 can be performed according to the method described herein. In some examples, aspects of the operation at step 1415 can be determined by reference to... Figures 5 to 8The distance threshold component described is used for execution.

[0201] At 1420, the first UE may perform a selection process for frequency resources for communication via frequency-multiplexed sidelinks within a time window including the communication resources allocated to the second UE and based on determining whether the distance parameter is less than a threshold. The operation of 1420 may be performed according to the method described herein. In some examples, aspects of the operation of 1420 may be as described in reference... Figures 5 to 8 The resource selection component described is used for execution.

[0202] At 1425, the first UE can select frequency resources within the time window for the frequency-multiplexed sidelink communication based on the distance parameter being less than a threshold. The operation at 1425 can be performed according to the method described herein. In some examples, aspects of the operation at 1425 can be described as follows: Figures 5 to 8 The resource selection component described is used for execution.

[0203] At 1430, the first UE can transmit the frequency-multiplexed sidelink communication based on this selection process. The operation of 1430 can be performed according to the methods described herein. In some examples, aspects of the operation of 1430 can be determined by referring to... Figures 5 to 8 The described sidelink communication component is used to perform this.

[0204] Figure 15 A flowchart illustrating a method 1500 for frequency multiplexing for sidelink transmission according to various aspects of this disclosure is shown. Operation of method 1500 can be implemented by a UE 115 or its components as described herein. For example, operation of method 1500 can be implemented by, as referred to... Figures 5 to 8 The described communication manager is used to perform this function. In some examples, the first UE can execute a set of instructions to control the functional elements of the first UE to perform the following functions. Additionally or alternatively, the UE can use dedicated hardware to perform aspects of the following functions.

[0205] At 1505, the first UE can identify distance parameters associated with the first UE and the second UE. Operation of 1505 can be performed according to the methods described herein. In some examples, aspects of the operation of 1505 can be determined by referring to... Figures 5 to 8 The distance threshold component described is used for execution.

[0206] At step 1510, the first UE can determine whether the distance parameter is less than a threshold. The operation of step 1510 can be performed according to the method described herein. In some examples, aspects of the operation of step 1510 can be determined by referring to... Figures 5 to 8 The distance threshold component described is used for execution.

[0207] At step 1515, the first UE can determine that the distance parameter is greater than a threshold. The operation at step 1515 can be performed according to the method described herein. In some examples, aspects of the operation at step 1515 can be determined by referring to... Figures 5 to 8 The distance threshold component described is used for execution.

[0208] At 1520, the first UE may perform a selection process for frequency resources for communication via frequency-multiplexed sidelinks within a time window including the communication resources allocated to the second UE and based on determining whether the distance parameter is less than a threshold. The operation of 1520 may be performed according to the method described herein. In some examples, aspects of the operation of 1520 may be as described in reference... Figures 5 to 8 The resource selection component described is used for execution.

[0209] At 1525, the first UE can identify restrictions on frequency resources used for frequency-multiplexed sidelink communication based on the distance parameter being greater than a threshold. The operation of 1525 can be performed according to the methods described herein. In some examples, aspects of the operation of 1525 can be described as follows: Figures 5 to 8 The resource selection component described is used for execution.

[0210] At 1530, the first UE can select frequency resources for the frequency-multiplexed sidelink communication based on this restriction. The operation of 1530 can be performed according to the methods described herein. In some examples, aspects of the operation of 1530 can be determined by referring to... Figures 5 to 8 The resource selection component described is used for execution.

[0211] At 1535, the first UE can transmit the frequency-multiplexed sidelink communication based on this selection process. The operation of 1535 can be performed according to the methods described herein. In some examples, aspects of the operation of 1535 can be described as follows: Figures 5 to 8 The described sidelink communication component is used to perform this.

[0212] Figure 16 A flowchart illustrating a method 1600 for supporting frequency reuse for sidelink transmission according to various aspects of this disclosure is shown. Operation of method 1600 may be implemented by a base station 105 or its components as described herein. For example, operation of method 1600 may be implemented by referring to... Figures 9 to 12 The described communication manager is used to perform this. In some examples, the base station can execute a set of instructions to control the functional elements of the base station to perform the following functions. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the following functions.

[0213] At 1605, the base station can identify distance parameters associated with the first UE and the second UE. Operation of 1605 can be performed according to the methods described herein. In some examples, aspects of the operation of 1605 can be determined by referring to... Figures 9 to 12 The described sidelink distance threshold component is used for execution.

[0214] In step 1610, the base station can determine whether the distance parameter is less than a threshold. The operation of step 1610 can be performed according to the method described herein. In some examples, aspects of the operation of step 1610 can be derived from, as referenced... Figures 9 to 12 The described sidelink distance threshold component is used for execution.

[0215] At 1615, the base station may perform a frequency resource selection process for frequency-multiplexed sidelink communication for the first UE within a time window including communication associated with the second UE and based on determining whether the distance parameter is less than a threshold. The operation of 1615 may be performed according to the method described herein. In some examples, aspects of the operation of 1615 may be as described in reference... Figures 9 to 12 The described sidelink resource selection component is used for execution.

[0216] At 1620, the base station can allocate resources for the frequency-multiplexed sidelink communication to the first UE based on the selection process. The operation of 1620 can be performed according to the method described herein. In some examples, aspects of the operation of 1620 can be described as follows: Figures 9 to 12 The described sidelink resource allocation component is used to perform this.

[0217] Figure 17 A flowchart illustrating a method 1700 for supporting frequency reuse for sidelink transmission according to various aspects of this disclosure is shown. Operation of method 1700 may be implemented by a base station 105 or its components as described herein. For example, operation of method 1700 may be implemented by referring to... Figures 9 to 12 The described communication manager is used to perform this. In some examples, the base station can execute a set of instructions to control the functional elements of the base station to perform the following functions. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the following functions.

[0218] At 1705, the base station can identify distance parameters associated with the first UE and the second UE. Operation of 1705 can be performed according to the methods described herein. In some examples, aspects of the operation of 1705 can be determined by referring to... Figures 9 to 12 The described sidelink distance threshold component is used for execution.

[0219] In step 1710, the base station can determine whether the distance parameter is less than a threshold. The operation of step 1710 can be performed according to the method described herein. In some examples, aspects of the operation of step 1710 can be determined by referring to... Figures 9 to 12 The described sidelink distance threshold component is used for execution.

[0220] At step 1715, the base station can determine that the distance parameter is less than a threshold. The operation of step 1715 can be performed according to the method described herein. In some examples, aspects of the operation of step 1715 can be determined by referring to... Figures 9 to 12 The described sidelink distance threshold component is used for execution.

[0221] At 1720, the base station may perform a frequency resource selection process for frequency-multiplexed sidelink communication for the first UE within a time window including communication associated with the second UE and based on determining whether the distance parameter is less than a threshold. The operation of 1720 may be performed according to the method described herein. In some examples, aspects of the operation of 1720 may be as described in reference... Figures 9 to 12 The described sidelink resource selection component is used for execution.

[0222] At 1725, the base station can allocate frequency resources within the time window for the frequency-reused sidelink communication based on the distance parameter being less than a threshold. The operation of 1725 can be performed according to the method described herein. In some examples, aspects of the operation of 1725 can be described as follows: Figures 9 to 12 The described sidelink resource allocation component is used to perform this.

[0223] At 1730, the base station can allocate resources for the frequency-multiplexed sidelink communication to the first UE based on the selection process. The operation of 1730 can be performed according to the methods described herein. In some examples, aspects of the operation of 1730 can be described as follows: Figures 9 to 12 The described sidelink resource allocation component is used to perform this.

[0224] Figure 18 A flowchart illustrating a method 1800 for supporting frequency reuse for sidelink transmission according to various aspects of this disclosure is shown. Operation of method 1800 may be implemented by a base station 105 or its components as described herein. For example, operation of method 1800 may be implemented by referring to... Figures 9 to 12 The described communication manager is used to perform this. In some examples, the base station can execute a set of instructions to control the functional elements of the base station to perform the following functions. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the following functions.

[0225] At 1805, the base station can identify distance parameters associated with the first UE and the second UE. Operation of 1805 can be performed according to the methods described herein. In some examples, aspects of operation of 1805 can be determined by referring to... Figures 9 to 12 The described sidelink distance threshold component is used for execution.

[0226] In step 1810, the base station can determine whether the distance parameter is less than a threshold. The operation of step 1810 can be performed according to the method described herein. In some examples, aspects of the operation of step 1810 can be determined by referring to... Figures 9 to 12 The described sidelink distance threshold component is used for execution.

[0227] At step 1815, the base station can determine that the distance parameter is greater than a threshold. The operation of step 1815 can be performed according to the method described herein. In some examples, aspects of the operation of step 1815 can be determined by referring to... Figures 9 to 12 The described sidelink distance threshold component is used for execution.

[0228] At 1820, the base station may perform a frequency resource selection process for frequency-multiplexed sidelink communication for the first UE within a time window including communication associated with the second UE and based on determining whether the distance parameter is less than a threshold. The operation of 1820 may be performed according to the method described herein. In some examples, aspects of the operation of 1820 may be as described in reference... Figures 9 to 12 The described sidelink resource selection component is used for execution.

[0229] In step 1825, the base station can identify restrictions on frequency resources used for frequency-reused sidelink communication based on the distance parameter being greater than a threshold. The operation of step 1825 can be performed according to the method described herein. In some examples, aspects of the operation of step 1825 can be described as follows: Figures 9 to 12 The described sidelink resource allocation component is used to perform this.

[0230] At 1830, the base station can allocate frequency resources for the frequency-multiplexed sidelink communication based on this constraint. The operation of 1830 can be performed according to the method described herein. In some examples, aspects of the operation of 1830 can be determined by referring to... Figures 9 to 12 The described sidelink resource allocation component is used to perform this.

[0231] At 1835, the base station can allocate resources for the frequency-multiplexed sidelink communication to the first UE based on this selection process. The operation of 1835 can be performed according to the method described herein. In some examples, aspects of the operation of 1835 can be described as follows: Figures 9 to 12 The described sidelink resource allocation component is used to perform this.

[0232] It should be noted that the methods described herein describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are also possible. Furthermore, aspects from two or more methods can be combined.

[0233] The following provides an overview of the various aspects of this disclosure:

[0234] Aspect 1: A method for wireless communication at a first UE, comprising: identifying a distance parameter associated with the first UE and a second UE; determining whether the distance parameter is less than a threshold; performing a selection process for frequency resources for frequency-reused sidelink communication within a time window including communication resources allocated to the second UE and at least in part based on determining whether the distance parameter is less than the threshold; and transmitting the frequency-reused sidelink communication at least in part based on the selection process.

[0235] Aspect 2: The method of aspect 1 further includes: determining that the distance parameter is less than the threshold; and selecting frequency resources within the time window for the frequency-multiplexed sidelink communication based at least in part on the distance parameter being less than the threshold.

[0236] Aspect 3: The method of aspect 1 further includes: determining that the distance parameter is greater than the threshold; identifying a restriction on frequency resources for the frequency-multiplexed sidelink communication based at least in part on the distance parameter being greater than the threshold; and selecting frequency resources for the frequency-multiplexed sidelink communication based at least in part on the restriction.

[0237] Aspect 4: The method of aspect 3, wherein selecting frequency resources includes: excluding frequency resources within the time window from candidate resources for selecting frequency resources, at least in part based on the constraint.

[0238] Aspect 5: The method of aspect 3, wherein selecting frequency resources includes: selecting frequency resources within the time window and offset in frequency from the communication resources allocated to the second UE, at least in part based on the constraint.

[0239] Aspect 6: The method of aspect 5 further includes: receiving configuration signaling indicating frequency offset.

[0240] Aspect 7: The method of any of Aspects 1 to 6, wherein identifying the distance parameter includes: determining the distance parameter at least in part based on the RSRP measured from the second UE, wherein the distance parameter and the threshold include the corresponding RSRP.

[0241] Aspect 8: The method of aspect 7, wherein a plurality of UEs including the second UE are allocated corresponding communication resources within the time window, and among the plurality of UEs, the second UE has the minimum RSRP relative to the first UE.

[0242] Aspect 9: The method of any of Aspects 1 to 6, wherein identifying the distance parameter includes: determining the distance parameter based at least in part on the location of the first UE and an indication of the location of the second UE, wherein the distance parameter and the threshold include corresponding distances.

[0243] Aspect 10: The method of aspect 9, wherein a plurality of UEs including the second UE are allocated corresponding communication resources within the time window, and among the plurality of UEs, the second UE has the maximum distance from the first UE.

[0244] Aspect 11: The method of any of Aspects 1 to 10, wherein a plurality of UEs including the second UE are allocated corresponding communication resources within the time window, and the second UE initiates a COT used by the first UE and the second UE.

[0245] Aspect 12: The method of any of Aspects 1 to 6 and 11, wherein identifying the distance parameter includes: determining the distance parameter based at least in part on the location of the first UE and the location of the COT used by the second UE, wherein the distance parameter and the threshold include the corresponding distance.

[0246] Aspect 13: The method of aspect 12, wherein the location of the COT includes the location of the wireless device that initiated the COT.

[0247] Aspect 14: The method of any of Aspects 12 to 13, wherein the location of the COT includes the geographic location or geographic division associated with the COT.

[0248] Aspect 15: The method of aspect 14, wherein determining whether the distance parameter is less than the threshold comprises: determining that the distance parameter is less than the threshold based at least in part on the fact that the zoning ID associated with the first UE is the same zoning ID associated with the COT.

[0249] Aspect 16: The method of any of Aspects 12 to 15, wherein the location of the COT is received via COT sharing information or configured for the COT.

[0250] Aspect 17: The method of any of Aspects 1 to 16 further includes: receiving configuration signaling indicating the threshold.

[0251] Aspect 18: A method for wireless communication at a base station, comprising: identifying a distance parameter associated with a first UE and a second UE; determining whether the distance parameter is less than a threshold; performing a selection process for frequency resources for frequency-reused sidelink communication for the first UE within a time window including communication associated with the second UE and at least in part based on determining whether the distance parameter is less than the threshold; and allocating resources for the frequency-reused sidelink communication to the first UE at least in part based on the selection process.

[0252] Aspect 19: The method of aspect 18 further includes: determining that the distance parameter is less than the threshold; and allocating frequency resources within the time window for the frequency-multiplexed sidelink communication based at least in part on the distance parameter being less than the threshold.

[0253] Aspect 20: The method of aspect 18 further includes: determining that the distance parameter is greater than the threshold; identifying a restriction on frequency resources for the frequency-multiplexed sidelink communication based at least in part on the distance parameter being greater than the threshold; and allocating frequency resources for the frequency-multiplexed sidelink communication based at least in part on the restriction.

[0254] Aspect 21: The method of aspect 20, wherein allocating frequency resources includes: allocating frequency resources within a second time window, different from the time window, for the frequency-multiplexed sidelink communication based at least in part on the constraint.

[0255] Aspect 22: The method of aspect 20, wherein allocating frequency resources includes: allocating frequency resources within the time window and offset in frequency from the communication resources allocated to the second UE, at least in part based on the constraint, for the frequency-multiplexed sidelink communication.

[0256] Aspect 23: The method of aspect 22 further includes: conveying configuration signaling indicating frequency offset.

[0257] Aspect 24: The method of any of Aspects 18 to 23, wherein identifying the distance parameter includes: determining the distance parameter at least in part based on an indication of RSRP for the second UE received from the first UE, wherein the distance parameter and the threshold include the corresponding RSRP.

[0258] Aspect 25: The method of aspect 24 further includes: transmitting to the first UE and the second UE an indication to report the measurement of RSRP used to determine the distance parameter.

[0259] Aspect 26: The method of any of Aspects 24 to 25, wherein a plurality of UEs including the second UE are allocated corresponding communication resources within the time window, and among the plurality of UEs, the second UE has the minimum RSRP relative to the first UE.

[0260] Aspect 27: The method of any of Aspects 18 to 23, wherein identifying the distance parameter includes: determining the distance parameter at least in part based on receiving an indication of the location of the first UE and an indication of the location of the second UE, wherein the distance parameter and the threshold include the corresponding distance.

[0261] Aspect 28: The method of aspect 27 further includes: transmitting to the first UE and the second UE an indication to report a measurement of the location used to determine the distance parameter.

[0262] Aspect 29: The method of any of Aspects 27 to 28, wherein a plurality of UEs including the second UE are allocated corresponding communication resources within the time window, and among the plurality of UEs, the second UE has the maximum distance from the first UE.

[0263] Aspect 30: The method of any of Aspects 18 to 29, wherein a plurality of UEs, including the second UE, are allocated corresponding communication resources within the time window, and the second UE initiates a COT used by the first UE and the second UE.

[0264] Aspect 31: The method of any of Aspects 18 to 30, wherein identifying the distance parameter includes: receiving from the first UE the distance parameter at least in part based on the location of the second UE or RSRP determined by the first UE.

[0265] Aspect 32: An apparatus for performing wireless communication at a first UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any of Aspects 1 to 17.

[0266] Aspect 33: An apparatus for wireless communication at a first UE, comprising at least one means for performing a method as described in any of Aspects 1 to 17.

[0267] Aspect 34: A non-transient computer-readable medium storing code for wireless communication at a first UE, the code including instructions executable by a processor to perform methods as described in any of Aspects 1 to 17.

[0268] Aspect 35: An apparatus for wireless communication at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any of Aspects 18 to 31.

[0269] Aspect 36: An apparatus for wireless communication at a base station, comprising at least one means for performing the method of any one of aspects 18 to 31.

[0270] Aspect 37: A non-transient computer-readable medium storing code for wireless communication at a base station, the code including instructions executable by a processor to perform methods as described in any of Aspects 18 to 31.

[0271] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein can also be applied to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques can be applied to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0272] The information and signals described herein can be represented using any of a wide variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout this description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0273] The various illustrative boxes and components described herein can be implemented or executed using a general-purpose processor, DSP, ASIC, CPU, 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. The general-purpose processor may be a microprocessor, but in alternatives, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, or any other such configuration).

[0274] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations fall within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Features implementing the functions can also be physically located in various locations, including being distributed such that different parts of the function are implemented at different physical locations.

[0275] Computer-readable media includes both non-transient computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transient storage media can be any available medium accessible to a general-purpose or special-purpose computer. By way of example and not limitation, non-transient computer-readable media may include random access RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other non-transient medium that can be used to carry or store desired program code in the form of instructions or data structures and is accessible to a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Similarly, any connection is also legitimately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then that coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable media. As used in this article, disk and disc include CDs, laser discs, optical discs, DVDs, floppy disks, and Blu-ray discs, where disks often magnetically reproduce data while discs optically reproduce data using lasers. Combinations of these media are also included within the scope of computer-readable media.

[0276] As used herein (including in the claims), the word "or" in an enumeration of items (e.g., an enumeration of items accompanied by phrases such as "at least one of" or "one or more of") indicates an inclusive enumeration, such that an enumeration of at least one of, for example, 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). Similarly, as used herein, the phrase "based on" should not be interpreted as referring to a closed set of conditions. For example, an example step described as "based on condition A" may 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 "at least partially based on".

[0277] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, components of the same type may be distinguished by a dash following the reference numeral and a second reference numeral used to differentiate between similar components. If only the first reference numeral is used in the description, the description may apply to any of the similar components having the same first reference numeral, regardless of the second reference numeral or other subsequent reference numerals.

[0278] This document, illustrated with reference to the accompanying drawings, describes exemplary configurations but does not represent all examples that can be implemented or fall within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration" and does not imply "superior" or "outperforming" other examples. This detailed description includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0279] The description provided herein is intended to enable those skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the universal principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for performing wireless communication at a first user equipment (UE), comprising: Identify the distance parameters associated with the first UE and the second UE; Within a time window, one or more first frequency resources are selected for frequency-reused sidelink communication to a third UE, wherein the one or more first frequency resources are selected based on the time window including one or more second frequency resources allocated to the second UE and at least in part based on whether the distance parameter is less than a threshold; and The frequency-multiplexed sidelink communication is transmitted at least in part based on the selection via the one or more first frequency resources.

2. The method of claim 1, further comprising: It is determined that the distance parameter is less than the threshold; as well as The selection of one or more first frequency resources within the time window for the frequency-reused sidelink communication is based at least in part on the distance parameter being less than the threshold.

3. The method of claim 1, further comprising: It is determined that the distance parameter is greater than the threshold; Restrictions on the one or more first frequency resources used for the frequency-reused sidelink communication are identified at least in part based on the distance parameter being greater than the threshold. as well as The selection of one or more first frequency resources for the frequency-reused sidelink communication is based at least in part on the aforementioned constraints.

4. The method of claim 3, wherein, Selecting one or more first frequency resources includes: One or more third frequency resources within the time window are excluded from the candidate resources for selecting the one or more first frequency resources, at least in part based on the constraints.

5. The method of claim 3, wherein, Selecting one or more first frequency resources includes: The selection of one or more first frequency resources within the time window and frequency offset from the one or more second frequency resources allocated to the second UE is based at least in part on the constraints.

6. The method of claim 1, wherein, The distance parameters identified include: The distance parameter is determined at least in part based on a measurement of the power received by a reference signal from the second UE, wherein the distance parameter and the threshold include the corresponding power received by the reference signal.

7. The method of claim 6, wherein: Multiple UEs, including the second UE, are allocated one or more corresponding frequency resources within the time window; and Among the plurality of UEs, the second UE has the minimum reference signal received power relative to the first UE.

8. The method of claim 1, wherein, The distance parameters identified include: The distance parameter is determined at least in part based on the location of the first UE and an indication of the location of the second UE, wherein the distance parameter and the threshold include the corresponding distance.

9. The method of claim 8, wherein: Multiple UEs, including the second UE, are allocated one or more corresponding frequency resources within the time window; and Among the plurality of UEs, the second UE has the maximum distance from the first UE.

10. The method of claim 1, wherein: Multiple UEs, including the second UE, are allocated one or more corresponding frequency resources within the time window; and The second UE initiates the channel occupancy time used by the first UE and the second UE.

11. The method of claim 1, wherein, The distance parameters identified include: The distance parameter is determined at least in part based on the location of the first UE and the location of the channel occupancy time used by the second UE, wherein the distance parameter and the threshold include the corresponding distance.

12. The method of claim 11, wherein, The location of the channel occupancy time includes the location of the wireless device that initiated the channel occupancy time.

13. The method of claim 11, wherein, Determining whether the distance parameter is less than the threshold includes: The distance parameter is determined to be less than the threshold based at least in part on the fact that the zoning identifier associated with the first UE is the same zoning identifier associated with the channel occupancy time, wherein the location of the channel occupancy time includes the geographic location or geographic zoning associated with the channel occupancy time.

14. The method of claim 11, wherein, The location of the channel occupancy time is received via channel occupancy time sharing information or configured for the channel occupancy time.

15. A method for conducting wireless communication at a network entity, comprising: Identify the distance parameters associated with the first user equipment (UE) and the second UE; Within a time window, one or more first frequency resources are selected for frequency-reused sidelink communication to a third UE, wherein the one or more first frequency resources are selected based on the time window including one or more second frequency resources allocated to the second UE and at least in part based on whether the distance parameter is less than a threshold; and The first UE is allocated one or more first frequency resources for the frequency-reused sidelink communication based at least in part on the selection.

16. The method of claim 15, further comprising: It is determined that the distance parameter is less than the threshold; as well as The allocation of one or more first frequency resources within the time window for the frequency-reused sidelink communication is based at least in part on the distance parameter being less than the threshold.

17. The method of claim 15, further comprising: It is determined that the distance parameter is greater than the threshold; Restrictions on the one or more first frequency resources used for the frequency-reused sidelink communication are identified at least in part based on the distance parameter being greater than the threshold. as well as The allocation of one or more first frequency resources for the frequency-multiplexed sidelink communication is based at least in part on the aforementioned restrictions.

18. The method of claim 17, wherein, Allocating the one or more first frequency resources includes: The allocation of one or more first frequency resources within a second time window, different from the first time window, for the frequency-reused sidelink communication is based at least in part on the constraints.

19. The method of claim 17, wherein, Allocating the one or more first frequency resources includes: The one or more first frequency resources, which are frequency offset from the one or more second frequency resources allocated to the second UE, are allocated for the frequency-reused sidelink communication within the time window based at least in part on the constraints.

20. The method of claim 15, wherein, The distance parameters identified include: The distance parameter is determined at least in part based on an indication of the power received by a reference signal for the second UE from the first UE, wherein the distance parameter and the threshold include the corresponding power received by the reference signal.

21. The method of claim 15, wherein, The distance parameters identified include: The distance parameter is determined at least in part based on received indications of the location of the first UE and the location of the second UE, wherein the distance parameter and the threshold include the corresponding distance.

22. An apparatus for performing wireless communication at a first user equipment (UE), comprising: One or more processors; One or more memories coupled to the one or more processors; as well as Instructions, the instructions being stored in the one or more memories and executable by the one or more processors, to cause the device to: Identify the distance parameters associated with the first UE and the second UE; Within a time window, one or more first frequency resources are selected for frequency-reused sidelink communication to a third UE, wherein the one or more first frequency resources are selected based on the time window including one or more second frequency resources allocated to the second UE and at least in part based on whether the distance parameter is less than a threshold; and The frequency-multiplexed sidelink communication is transmitted at least in part based on the selection via the one or more first frequency resources.

23. The apparatus of claim 22, wherein, The instructions can be further executed by the one or more processors to cause the device to: Determine that the distance parameter is less than the threshold; and The selection of one or more first frequency resources within the time window for the frequency-reused sidelink communication is based at least in part on the distance parameter being less than the threshold.

24. The apparatus of claim 22, wherein, The instructions can be further executed by the one or more processors to cause the device to: It is determined that the distance parameter is greater than the threshold; Restrictions on the one or more first frequency resources used for the frequency-reused sidelink communication are identified at least in part based on the distance parameter being greater than the threshold. as well as The selection of one or more first frequency resources for the frequency-reused sidelink communication is based at least in part on the aforementioned constraints.

25. The apparatus of claim 24, wherein, Instructions for selecting the one or more first frequency resources can be executed by the one or more processors to enable the device to: One or more third frequency resources within the time window are excluded from the candidate resources for selecting the one or more first frequency resources, at least in part based on the constraints.

26. The apparatus of claim 24, wherein, Instructions for selecting the one or more first frequency resources can be executed by the one or more processors to enable the device to: The selection of one or more first frequency resources within the time window and frequency offset from the one or more second frequency resources allocated to the second UE is based at least in part on the constraints.

27. The apparatus of claim 22, wherein, Instructions for identifying the distance parameters can be executed by the one or more processors to enable the device to: The distance parameter is determined at least in part based on a measurement of the power received by a reference signal from the second UE, wherein the distance parameter and the threshold include the corresponding power received by the reference signal.

28. The apparatus of claim 22, wherein, Instructions for identifying the distance parameters can be executed by the one or more processors to enable the device to: The distance parameter is determined at least in part based on the location of the first UE and an indication of the location of the second UE, wherein the distance parameter and the threshold include the corresponding distance.

29. The apparatus of claim 22, wherein, Instructions for identifying the distance parameters can be executed by the one or more processors to enable the device to: The distance parameter is determined at least in part based on the location of the first UE and the location of the channel occupancy time used by the second UE, wherein the distance parameter and the threshold include the corresponding distance.

30. An apparatus for wireless communication at a network entity, comprising: One or more processors; One or more memories coupled to the one or more processors; as well as Instructions, the instructions being stored in the one or more memories and executable by the one or more processors, to cause the device to: Identify the distance parameters associated with the first user equipment (UE) and the second UE; Within a time window, one or more first frequency resources are selected for frequency-reused sidelink communication to a third UE, wherein the one or more first frequency resources are selected based on the time window including one or more second frequency resources allocated to the second UE and at least in part based on whether the distance parameter is less than a threshold. as well as The first UE is allocated one or more first frequency resources for the frequency-reused sidelink communication based at least in part on the selection.

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