Priority cancellation of sidelink and uplink

Abstract

Described are methods, systems, and devices for wireless communications. In a wireless communications system, a base station may transmit an indication of a configuration authorization for time-frequency resources used by a user equipment (UE) to transmit a sidelink or uplink message. In order to reduce the amount of low priority traffic that may interfere with higher priority traffic, the base station may configure a threshold probability to allow high priority sidelink transmissions and cancel low priority transmissions. The base station may transmit a cancel indication including a priority indication, the cancel indication commanding the UE to cancel transmissions having a priority less than a priority threshold during the allocated time-frequency resources. Based on the transmission cancel indication, the base station may cancel transmissions having a low priority, and the UE may determine whether to transmit (or suppress transmission) a message based on the priority of one or more messages.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 983,484, filed on February 28, 2020 by Ryu et al., entitled “Priority Cancellation of Sidelinks and Uplinks,” and U.S. Patent Application No. 17 / 185,316, filed on February 25, 2021 by Ryu et al., entitled “Priority Cancellation of Sidelinks and Uplinks,” each of which is assigned to the assignee of this document. Technical Field

[0003] The following relates generally to wireless communications and, more particularly, to sidelink and uplink priority cancellation. Background Art

[0004] Wireless communication systems are fully deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, LTE-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 may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform propagation OFDM (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 of multiple communication devices (which may be referred to as user equipment (UE)).

[0005] In some wireless communication systems, devices may send messages with different reliability and latency targets. For example, a device may be configured to send data transmissions (which may correspond to lower priority data) and ultra-reliable low latency (URLLC) transmissions (which may correspond to higher priority data). However, some technologies utilized by wireless devices may not take into account different priorities when performing communications. Summary of the invention

[0006] The described techniques relate to improved methods, systems, devices and apparatuses that support priority cancellation of sidelinks and uplinks.In general, the described techniques provide for reducing interference from low priority uplink or sidelink messages during transmission of high priority data.

[0007] Some wireless communication systems may be configured to support different types of signaling services (traffic) for uplink and sidelink communications. For example, devices such as user equipment (UE) and base stations may support normal data services (e.g., data services transmitted according to a first delay and reliability target) and ultra-reliable low delay services (URLLC) (which may be associated with a second delay and reliability target). Different signaling services may be associated with different priorities, including different delay and reliability targets.

[0008] In some examples, a base station may transmit a grant (e.g., a configuration grant, a periodic grant) indicating allocation of time-frequency resources for a UE to use to transmit a sidelink or uplink message. In order to reduce the amount of low-priority traffic that may interfere with higher-priority traffic, the base station may configure a threshold to allow high-priority sidelink transmissions (e.g., transmissions that meet a threshold priority) and cancel low-priority transmissions. For example, a base station may transmit a cancellation indication including a priority indication, which instructs the UE to use the allocated time-frequency resources to cancel transmissions with a priority less than a priority threshold. Based on the transmission cancellation indication, the base station may cancel transmissions with a low priority, and the UE may determine whether to transmit (or suppress transmission) one or more messages based on the priority of the one or more messages.

[0009] A method of wireless communication at a UE is described. The method may include: receiving a UE grant from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; receiving an indication from the base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources; and, based on the indication, determining whether to transmit one or more messages via at least a portion of the set of time-frequency resources.

[0010] Described is an apparatus for wireless communication at a UE. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: receive a UE grant from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; receive an indication from the base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources; and, based on the indication, determine whether to transmit one or more messages via at least a portion of the set of time-frequency resources.

[0011] Described is another apparatus for wireless communication at a UE. The apparatus may include means for: receiving a UE authorization from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; receiving an indication from the base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources; and, based on the indication, determining whether to transmit one or more messages via at least a portion of the set of time-frequency resources.

[0012] Described is a non-transitory computer-readable medium storing code for wireless communication at a UE. The code may include instructions executable by a processor to: receive a UE grant from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; receive an indication from the base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources; and, based on the indication, determine whether to transmit one or more messages via at least a portion of the set of time-frequency resources.

[0013] Some examples of methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for determining to refrain from transmitting one or more messages based on the one or more messages having a second priority that is less than a priority threshold.

[0014] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, devices, or instructions for transmitting a preemption indication to a second UE indicating cancellation of transmission of one or more messages from the UE based on a determination to suppress transmission.

[0015] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for transmitting an indication of a priority threshold to a second UE indicating that transmissions having a priority less than the priority threshold may be canceled.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, an indication of a priority threshold may be included in the preemption indication.

[0017] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, devices, or instructions for identifying additional resources scheduled for an uplink message from a UE, wherein the additional resources at least partially overlap with a set of time-frequency resources indicated by a grant, and suppressing transmission of the uplink message based on the indication and the uplink message having a second priority.

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for determining to transmit one or more messages based on the one or more messages having a second priority greater than a priority threshold.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, one or more messages may be sidelink messages or uplink messages.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the authorized set of time-frequency resources may be periodic.

[0021] A method of wireless communication at a base station is described. The method may include: transmitting to a UE a grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; determining a priority of a message for transmission via a portion of the set of time-frequency resources, the message being one of uplink or sidelink; and, based on the priority of the message, transmitting an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during the portion of the set of time-frequency resources.

[0022] Described is an apparatus for wireless communication at a base station. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: transmit to a UE an authorization indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; determine a priority of a message for transmission via a portion of the set of time-frequency resources, the message being one of the uplink or the sidelink; and, based on the priority of the message, transmit an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during the portion of the set of time-frequency resources.

[0023] Described is another apparatus for wireless communication at a base station. The apparatus may include means for: transmitting to a UE a grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; determining a priority of a message for transmission via a portion of the set of time-frequency resources, the message being one of uplink or sidelink; and, based on the priority of the message, transmitting an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during the portion of the set of time-frequency resources.

[0024] Described is a non-transitory computer-readable medium storing code for wireless communication at a base station. The code may include instructions executable by a processor to: transmit to a UE a grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; determine a priority of a message for transmission via a portion of the set of time-frequency resources, the message being one of the uplink or the sidelink; and, based on the priority of the message, transmit an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during the portion of the set of time-frequency resources.

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, devices, or instructions for: identifying a transmission of an uplink message by a second UE via a portion of a set of time-frequency resources; determining a priority threshold based on the uplink message; and, based on the uplink message, transmitting to one or more UEs in a group of UEs an indication for canceling a sidelink transmission having a second priority.

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, identifying the transmission of an uplink message may include operations, features, means, or instructions for receiving a scheduling request for the transmission of an uplink message from a second UE.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the priority threshold corresponds to a priority value of the uplink message.

[0028] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, devices, or instructions for: identifying a transmission of a sidelink message by a second UE via a portion of a set of time-frequency resources; determining a priority threshold based on the sidelink message, wherein the priority threshold corresponds to the sidelink message; and, based on the sidelink message, transmitting an indication to one or more UEs in the group of UEs, the cancellation indication comprising the priority threshold.

[0029] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving a scheduling request for transmission of a sidelink message from a second UE of the group of UEs to a third UE.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the priority threshold corresponds to a priority value of the sidelink message.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the cancellation indication includes a priority threshold.

[0032] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the cancellation indication includes an indication of a portion of the set of time-frequency resources.

[0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the authorized set of time-frequency resources may be periodic. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figures 1 to 5 An example wireless communication system supporting aspects of the present disclosure is shown.

[0035] Figure 6 An example of a process flow diagram supporting aspects of the present disclosure is shown.

[0036] Figure 7 and 8 A block diagram showing a device supporting aspects of the present disclosure.

[0037] Fig. 9 A block diagram of a communications manager supporting aspects of the present disclosure is shown.

[0038] Fig.10 A diagram is shown of a system including devices supporting aspects of the present disclosure.

[0039] Fig.11 and 12 A block diagram showing a device supporting aspects of the present disclosure.

[0040] Fig.13 A block diagram of a communications manager supporting aspects of the present disclosure is shown.

[0041] Fig.14 A diagram is shown of a system including devices supporting aspects of the present disclosure.

[0042] Figures 15 to 21 A flow chart illustrating a method supporting aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0043] Some wireless communication systems may be configured to support different types of signaling services for uplink and sidelink communications, for example, both normal data services (e.g., data services associated with a first reliability and delay target) and ultra-reliable low-delay services (URLLC) (which may be associated with a second reliability and delay target). In some cases, different priorities may be associated with different service types. For example, normal data services may be associated with low-priority transmissions, and URLLC services may be associated with higher priority transmissions (e.g., transmissions with a higher priority or lower delay target than transmissions associated with normal data transmissions). In some cases, a device such as a base station or user equipment (UE) may receive an indication of transmitting high-priority URLLC data, and may transmit high-priority data within a period that meets the low-delay target of the URLLC service.

[0044] In some cases, the base station may identify downlink URLLC data to be transmitted to a UE or a group of UEs, and the base station may suppress transmission of lower priority services (e.g., normal downlink data transmission such as enhanced mobile broadband (eMBB) transmission) to prioritize transmission of URLLC data. However, in some cases, URLLC transmission may interrupt the scheduling previously established by the base station for normal data services. In this case, the base station may notify the UE that scheduling interruption may occur due to adaptation of URLLC transmission.

[0045] In one example, the base station may use a preemption indication that notifies the UE that the scheduled resources are being used for transmission of higher priority traffic. The preemption indication may notify a single UE or a group of UEs to ignore the scheduled resources because higher priority traffic is scheduled using these resources. In this case, the UE may refrain from decoding the transmission in the scheduled downlink resources.

[0046] In another example, the base station may transmit a cancellation indication to a UE or a group of UEs to cancel a scheduled uplink or sidelink transmission scheduled using time-frequency resources. For example, a base station may schedule a first UE to transmit uplink or sidelink data (e.g., normal data) in a time-frequency resource set, but may determine that a second UE has higher priority uplink or sidelink data (e.g., URLLC data) to be transmitted, and the base station may schedule the second UE using the same time-frequency resource set. The base station may schedule the second UE to transmit URLLC data via a time-frequency resource set, and may cancel the normal data transmission of the first UE by sending a cancellation indication to the first UE. In some examples, the base station may include a priority indication in the cancellation indication. The priority indication may indicate a priority threshold p, and the cancellation indication may command the UE to cancel a transmission having a priority less than the priority threshold. In some cases, the priority of each transmission may be associated with the number of bits, and determining the priority of the transmission may include comparing the number of bits to the priority threshold.

[0047] The base station can allocate resources via a configuration grant (e.g., a periodic grant) to enable several UEs of the wireless communication network to transmit normal sidelink or uplink messages. In order to reduce the amount of low priority traffic, the base station can determine to allow high priority sidelink transmission (e.g., transmission that meets a threshold priority), which can increase the reliability of high priority transmission. In some examples, the base station can identify an increase in high priority traffic and can use the resources indicated by the configuration grant to transmit higher priority data. In this example, the base station can transmit a cancellation indication including a priority indication to the UE to notify the UE to cancel a scheduled transmission of a lower priority. Based on the transmission cancellation indication, the base station can cancel a transmission with a low priority, which can reduce the amount of traffic or interference of high priority data and can increase the possibility of successfully transmitting a high priority transmission.

[0048] In some examples, uplink URLLC traffic may preempt or cancel a scheduled lower priority sidelink transmission, and the UE may transmit uplink URLLC traffic in resources previously scheduled by the base station for lower priority sidelink transmission. In some other examples, high priority sidelink URLLC traffic may preempt or cancel a scheduled uplink transmission, and the UE may transmit URLLC data in resources previously scheduled by the base station for lower priority uplink transmission. In yet other examples, high priority sidelink URLLC traffic may preempt or cancel another lower priority scheduled sidelink transmission, and the UE may transmit URLLC data in resources previously scheduled by the base station for lower priority sidelink transmission.

[0049] Various aspects of the present disclosure are initially described in the context of a wireless communication system. For example, various aspects of the present disclosure are described in the context of communications between wireless devices supporting uplink and sidelink communications. Further, various aspects of the present disclosure will be illustrated by apparatus diagrams, system diagrams, process flow diagrams, and flow charts related to priority cancellation of sidelinks and uplinks, and various aspects of the present disclosure will be described with reference to these drawings.

[0050] Figure 1 An example of a wireless communication system 100 that supports preferential cancellation of sidelinks and uplinks according to various aspects of the present disclosure is shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an LTE-Advanced (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 communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0051] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100 and may be devices of different forms or 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 over which UEs 115 and base stations 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographic area over which base stations 105 and UEs 115 may support communication of signals according to one or more radio access technologies.

[0052] UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be fixed or mobile, or fixed or mobile at different times. UEs 115 may be devices of different forms or with different capabilities. Figure 1 Some example UEs 115 are shown. The UEs 115 described herein are capable of communicating with various types of devices, such as Figure 1 Other UEs 115, base stations 105, or network devices (eg, core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices) are shown.

[0053] Base stations 105 may communicate with core network 130, or with each other, or both. For example, base station 105 may interface with 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) or indirectly (e.g., via core network 130), or both, over backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, backhaul links 120 may be or include one or more wireless links.

[0054] The one or more base stations 105 described herein may include or may be referred to by a person of ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next generation NodeB or giga-NodeB (all may be referred to as gNB), a Home NodeB, a Home eNodeB, or other appropriate terminology.

[0055] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other appropriate terminology, where a "device" may also be referred to as an example of a unit, a station, a terminal, or a client. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or may be referred to as an example of a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, which may be implemented in various objects such as home appliances, or vehicles, meters, etc.

[0056] The UE 115 described herein is capable of communicating with various types of devices, such as Figure 1 Examples include other UEs 115 (which may sometimes act as relays) as well as base stations 105 and network equipment (including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations).

[0057] The UE 115 and the base station 105 can communicate with each other wirelessly on one or more carriers via one or more communication links 125. The term "carrier" can refer to a collection of radio frequency (RF) spectrum resources with a defined physical layer structure that supports the communication link 125. For example, the carrier used for the communication link 125 may include a portion (e.g., bandwidth portion (BWP)) of a radio frequency spectrum band that operates according to one or more physical layer channels of a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel can carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating the operation of the carrier, user data, or other signaling. The wireless communication system 100 can support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers according to the carrier aggregation configuration. Carrier aggregation can be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0058] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have control signaling or acquisition signaling to coordinate the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by a UE 115. A carrier may operate in a standalone mode (initial acquisition and connection may be performed by a UE 115 via the carrier), or a carrier may operate in a non-standalone mode (using a different carrier (e.g., of the same or different radio access technology) to anchor a connection).

[0059] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode), or may be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0060] A carrier may be associated with a particular bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). Devices of the wireless communication system 100 (e.g., a base station 105, a UE 115, or both) may have a hardware configuration that supports communication on a particular carrier bandwidth, or may be configured to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a subband, a BWP) or all of a carrier bandwidth.

[0061] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform-spread OFDM (DFT-S-OFDM)). In a system using MCM technology, a resource element may be composed of 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 coding rate of the modulation scheme, or both). Therefore, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate of UE 115 can be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers can also improve the data rate or data integrity of communication with UE 115.

[0062] The time interval of the base station 105 or the UE 115 can be expressed as a multiple of the basic time unit. For example, the basic time unit can refer to T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can indicate the maximum subcarrier spacing supported, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., from 0 to 1023).

[0063] 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, the frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of symbol durations (e.g., depending on the length of a cyclic prefix preset to each symbol period). In some wireless communication systems 100, a time slot may also be divided into a plurality of mini-slots, each of which contains one or more symbols. Without including a cyclic prefix, each symbol period may contain one or more (e.g., N f ) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0064] A subframe, slot, mini slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0065] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier (e.g., using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique). A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a number of symbol periods and may extend over a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more UEs 115 may monitor or search for control information of a control region according to one or more search space sets, and each search space set may include one or more control channel candidates of one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information of a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to a plurality of UEs 115 and a UE-specific search space set configured for transmitting control information to a specific UE 115 .

[0066] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with the base station 105 (e.g., on a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other) used to distinguish adjacent cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion (e.g., a partition) of a geographic coverage area 110 on which a logical communication entity operates. Such a cell may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area, depending on various factors, such as the capabilities of the base station 105. For example, a cell may be or include a building, a subset of a building, or an external space between or overlapping a geographic coverage area 110, among other examples.

[0067] A macro cell generally covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow UE 115 to access the network without restriction by subscribing to a service provided by a network provider supporting the macro cell. A small cell may be associated with a base station 105 with lower power than a macro cell, and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to a UE 115 with a service subscription to a network provider, or may provide restricted access to a UE 115 associated with a small cell (e.g., a UE 115 in a closed user group (CSG), a UE 115 associated with a user in a home or office). A base station 105 may support one or more cells, and may also support communications on one or more cells using one or more component carriers.

[0068] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband Internet of Things (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0069] In some examples, the base stations 105 may be mobile, thereby providing communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, although 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. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0070] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and in some examples, transmissions from different base stations 105 may not be aligned in time. The techniques described herein may be used for synchronous or asynchronous operation.

[0071] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automatic communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices integrated with sensors or meters to measure or capture information and forward such information to a central server or application that utilizes the information or presents it to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automatic behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business billing.

[0072] Some UEs 115 may be configured to employ an operating mode that reduces power consumption, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but does not support simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UE 115 include entering a deep sleep mode to save power when active communication is not initiated, operating over a limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type, wherein the narrowband protocol type is associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0073] The wireless communication system 100 can be configured to support ultra-reliable communication or low-delay communication, or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-delay communication (URLLC) or mission-critical communication. UE115 can be designed to support ultra-reliable, low-delay or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication, and can be supported by one or more mission-critical services, such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo) or mission-critical data (MCData). Support for mission-critical functions can include the priority of the service, and mission-critical services can be used for public safety or general commercial applications. In this article, the terms "ultra-reliable", "low latency", "mission-critical" and "ultra-reliable low latency" can be used interchangeably.

[0074] In some examples, UE 115 may also communicate directly with other UE 115 on D2D communication link 135 (e.g., using point-to-point (P2P) or device-to-device (D2D) protocols). One or more UE 115 utilizing D2D communication may be located within the geographic coverage area 110 of base station 105. Other UE 115 in such a group may be located outside the geographic coverage area 110 of base station 105 or unable to receive transmissions from base station 105. In some examples, a group of UE 115 communicating via D2D communication may utilize a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some examples, base station 105 facilitates resource scheduling for D2D communication. In other cases, D2D communication is performed between UE 115 without the involvement of base station 105.

[0075] In some systems, the D2D communication link 135 can be an example of a communication channel between vehicles (e.g., UE 115), such as a sidelink communication channel. In some examples, vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination thereof. Vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, vehicles in a V2X system can communicate with roadside infrastructure (such as roadside devices), or communicate with a network using vehicle-to-network (V2N) communication via one or more network nodes (e.g., base station 105), or communicate with both.

[0076] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connection, and other access, routing or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting with an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 provided by a base station 105 associated with the core network 130. User IP packets may be transmitted through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP service 150 of the network operator. The operator's IP service 150 may include access to the Internet, an intranet, an IP multimedia subsystem (IMS), or a packet-switched streaming service.

[0077] Some network devices, such as base stations 105, may include subcomponents, such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with the UE 115 through one or more other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmission / reception points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be spread across various network devices (e.g., radio heads and ANCs), or merged into a single network device (e.g., base station 105).

[0078] The wireless communication system 100 may operate using one or more frequency bands, which are typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). In general, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band, because the wavelength is approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but UHF waves are sufficient to penetrate structures to allow macro cells to provide service to UEs 115 located indoors. Transmissions using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) than transmissions using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions below 300 MHz.

[0079] The wireless communication system 100 may also operate in a super high frequency (SHF) region using a frequency band from 3 GHz to 30 GHz (also known as a centimeter-level frequency band), or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also known as a millimeter-level frequency band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be affected by greater atmospheric attenuation and a shorter range than SHF or UHF transmissions. The technology disclosed herein can be used for all transmissions using one or more different frequency regions, and the designated frequency band usage of all these frequency regions may vary by country or regulatory agency.

[0080] The wireless communication system 100 can utilize licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 can employ license assisted access (LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in an unlicensed radio frequency spectrum band, devices (such as base stations 105 and UEs 115) can employ carrier sensing to detect and avoid collisions. In some examples, operations in unlicensed bands can be based on component carriers (e.g., LAA) operating in licensed bands and carrier aggregation configurations. Operations in unlicensed spectrum can include examples such as downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions.

[0081] The base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located in one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array having antenna ports in several rows and columns, wherein the base station 105 may use the antenna ports to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming of signals transmitted via the antenna ports.

[0082] The base station 105 or UE 115 can use MIMO communication to exploit multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. This technology can be called spatial multiplexing. For example, multiple signals can be transmitted by a transmitting device via different antennas or different antenna combinations. Similarly, multiple signals can be received by a receiving device via different antennas or different antenna combinations. Each of the multiple signals can be called a separate spatial stream and can carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers can be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO) (transmitting multiple spatial layers to the same receiving device) and multi-user MIMO (MU-MIMO) (transmitting multiple spatial layers to multiple devices).

[0083] Beamforming (also referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or direct an antenna beam (e.g., a transmission beam, a reception beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating at a specific orientation relative to the antenna array are subject to constructive interference, while other signals are subject to destructive interference. Adjustment of signals transmitted via antenna elements can include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. The adjustment associated with each antenna element can be defined by a set of beamforming weights associated with a specific orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other direction).

[0084] The base station 105 or the UE 115 may use beam scanning techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by the base station 105 in different directions. For example, the base station 105 may transmit signals according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used to identify the beam direction (e.g., by a transmitting device (such as the base station 105) or by a receiving device (such as the UE 115)) for subsequent transmission or reception by the base station 105.

[0085] Some signals, such as data signals associated with a particular receiving device, may be transmitted by base station 105 in a single beam direction, e.g., a direction associated with a receiving device, such as UE 115. In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal that UE 115 received with the highest signal quality or other acceptable signal quality.

[0086] In some examples, transmissions by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may generate a combined beam using a combination of digital precoding or radio frequency beamforming for transmission (e.g., from a base station 105 to a UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across a system bandwidth or one or more subbands. The base station 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)), which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-faceted codebook, a linear combination codebook, a port selection codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may employ similar techniques to transmit signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0087] A receiving device (e.g., UE 115) may try multiple receiving configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a base station 105. For example, a receiving device may try multiple receiving directions in the following manners, any of which may be referred to as "listening" according to different receiving configurations or receiving directions: receiving via different antenna subarrays, processing the received signal according to different antenna subarrays, receiving according to different receiving beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or processing the received signal according to different receiving beamforming weight sets applied to signals received at multiple antenna elements of an antenna array. In some examples, a receiving device may use a single receiving configuration to receive along a single beam direction (e.g., when receiving a data signal). According to different receiving configuration directions, the single receiving configuration may be aligned in a beam direction determined based on listening (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0088] The wireless communication system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication at the bearer or packet data convergence protocol (PDCP) layer can be based on IP. The radio link control (RLC) layer can perform packet segmentation and reassembly to communicate on the logical channel. The medium access control (MAC) layer can perform priority processing and multiplex the logical channel to the transport channel. The MAC layer can also use error detection technology, error correction technology, or both to support retransmission at the MAC layer, thereby improving link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration and maintenance of the RRC connection between the UE 115 and the base station 105 or the core network 130 to support the radio bearer of the user plane data. At the physical layer, the transport channel can be mapped to the physical channel.

[0089] UE 115 and base station 105 may support retransmission of data to increase the likelihood of successfully receiving data. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood of correctly receiving data on communication link 125. HARQ may include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, a device may support same-slot HARQ feedback, wherein a device may provide HARQ feedback in a particular slot for data received in a previous symbol in the slot. In other cases, a device may provide HARQ feedback in a subsequent slot or according to some other time interval.

[0090] The wireless communication system 100 can be configured to support different types of signaling services for uplink and sidelink communications. For example, a device (such as UE 115 and base station 105) can support both URLLC and normal services. In some cases, normal services may include uplink and downlink transmissions between base station 105 and UE 115 or sidelink transmissions between groups of UEs. In addition, normal services may not be associated with reliability or delay targets, or may be associated with reliability or delay targets lower than URLLC data (e.g., URLLC services may have a higher priority than normal services). In some cases, a device (such as base station 105 or UE 115) may prioritize high priority services relative to lower priority services.

[0091] In some examples, the base station 105 may transmit a grant of resources (such as periodic resources) to the UE 115 or a group of UEs, which may be used for sidelink or uplink communications. In order to improve the reliability of higher priority services, the base station 105 may configure a threshold to allow portions of services, such as high priority sidelink or uplink transmissions (e.g., transmissions that meet a threshold priority), to be transmitted via a given set of resources. In this example, the base station 105 may transmit a cancellation indication including a priority indication to the UE 115 to command the UE 115 to cancel a lower priority scheduled transmission (e.g., based on a lower priority scheduled transmission having a priority less than a priority threshold). This technique may reduce the amount of traffic or interference experienced by a high priority sidelink transmission or a high priority uplink transmission.

[0092] In some examples, uplink URLLC service can preempt or cancel scheduled lower priority sidelink transmission. In some other examples, high priority sidelink URLLC service can preempt or cancel scheduled uplink transmission. In some other examples, high priority sidelink URLLC service can preempt or cancel another scheduled sidelink transmission of lower priority.

[0093] Figure 2 An example of a wireless communication system 200 that supports preferential cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. For example, the wireless communication system 200 can support the preferred cancellation of sidelinks and uplinks according to aspects of the present disclosure. Figure 1 The described examples of UE 115 and base station 105 include communications between each UE 115 (e.g., UE 115-a) and base station 105-a.

[0094] Devices in the wireless communication system 200 can communicate using various communication links. In some examples, a device (such as UE 115-a) can communicate directly with the base station 105-a using an access link. In some other cases, UE 115-a (or another device such as an IAB node, etc.) can communicate using a sidelink established directly between one or more other devices (e.g., with or without a direct link with the base station 105-a). In sidelink communications, sidelink devices (such as UE 115-a) can use beamforming technology to establish a communication link. In some cases, for example, for sidelink operation within coverage (e.g., mode 1), the sidelink UE 115 can have a connection with the base station 105-a. The base station 105-a can indicate the resources that the sidelink UE can use for sidelink communication (e.g., the sidelink UE 115 can be in the RRC_Connected state with the base station 105-a).

[0095] The wireless communication system 200 can be configured to support different service priorities, and in some cases, different priorities can correspond to different service types. For example, eMBB access can correspond to low priority access for downlink and uplink services, and URLLC can correspond to higher priority services (e.g., services with higher priority or lower latency than services associated with eMBB). In some cases, a transmission device (such as a base station 105-a for downlink communication and a UE 115-a for uplink communication) can identify high priority URLLC data to be transmitted.

[0096] In some cases, the transmission device can transmit high priority data within a time period that meets the low latency target of the URLLC service. In some examples, the data service priority can be included in the control information, such as downlink control information (DCI) of a message containing data.

[0097] In one example, the base station 105-a may use a preemption indication that notifies the UE 115-a that resources scheduled for communication between the base station 105-a and the UE 115-a are being used to transmit higher priority traffic. In some cases, the base station 105-a may transmit the preemption indication using a control message such as a DCI (e.g., DCI format 2_1). Based on the higher priority traffic scheduled using the scheduled resources, the preemption indication may notify a single UE 115-a or a group of UEs 115 to ignore the scheduled resources (physical resource blocks (PRBs), OFDM symbols, etc.) (e.g., the UE 115-a or the group of UEs may assume that no transmission is received on the indicated resources). In some cases, the preemption indication may indicate to the UE 115-a that the base station 105-a is scheduled to transmit downlink eMBB transmissions to the UE 115-a, but that the transmission of the downlink eMBB transmissions is suppressed in order to prioritize the transmission of emergency URLLC traffic. In this case, the UE 115-a may suppress decoding of transmissions in the scheduled downlink resources.

[0098] In another example, the base station 105-a may use a cancellation indication 205 to cancel an uplink or sidelink transmission scheduled in a time-frequency resource. For example, the base station 105-a may schedule a first UE (such as UE 115-a) to transmit uplink data (e.g., eMBB data or normal data transmission) in a time-frequency resource, but may determine that a second UE 115-b in the coverage area 110-a has higher priority uplink data (e.g., URLLC data) to be transmitted using the same time-frequency resources. The base station 105-a may schedule the second UE 115-b to transmit URLLC data using the time-frequency resources, and may cancel the uplink transmission of the first UE 115-a. The base station 105-a may transmit a cancellation indication to the first UE 115-a to notify the first UE 115-a of the cancellation of the uplink transmission. In some examples, the base station 105-a may include the priority indication 210 in the cancellation indication. The priority indication 210 may indicate a priority threshold "p" to indicate that transmissions in the time-frequency resource having a priority less than the priority threshold p are to be cancelled.

[0099] The wireless communication system 200 can support sidelink communications with data of different priorities, for example, a device can transmit normal data (e.g., a lower priority transmission relative to URLLC data) and URLLC data on a sidelink connection. In some cases, the base station 105-a can allocate resources to the sidelink communication. For example, in duplex communication (e.g., time division duplex (TDD), an uplink time slot can be scheduled by the base station 105-a for uplink transmissions from the UE 115 to the base station 105-a. In addition, the base station 105-a can schedule sidelink transmissions between devices (e.g., from a UE 115-a to another UE 115-b, 115-c, or 115-d under mode 1 operation).

[0100] In some examples, uplink URLLC traffic can preempt scheduled lower priority sidelink transmissions, allowing UE 115-a to transmit uplink URLLC data after receiving data from higher layers. In order to transmit URLLC data to meet low latency targets, UE 115-a can transmit uplink URLLC traffic in resources previously scheduled by base station 105-a for lower priority sidelinks.

[0101] In some other examples, high priority sidelink URLLC traffic can preempt scheduled uplink transmissions, allowing UE 115-a to transmit sidelink URLLC traffic after receiving traffic from higher layers. UE 115-a can transmit URLLC data in resources previously scheduled by the base station for lower priority uplink transmissions.

[0102] In some other examples, a high priority sidelink URLLC service may preempt another lower priority scheduled sidelink transmission, thereby enabling UE 115-a to transmit the high priority sidelink URLLC service after receiving the service from a higher layer. UE 115-a may transmit URLLC data in resources previously scheduled by the base station for a lower priority sidelink transmission.

[0103] In sidelink communication, the priority of the sidelink transmission can be determined using the number of bits in the sidelink control indicator (SCI) or the physical sidelink control channel (PSCCH). For example, three bits can be used to indicate the transmission priority (e.g., up to 8 priority levels). In the case where the base station 105-a identifies the sidelink data to be transmitted, the base station 105-a can configure a threshold value for each UE 115 (such as a threshold priority associated with the priority indication 210). In some examples, the base station 105-a can determine the threshold value based on the target number of resources to be allocated that can be used for high priority transmission. The UE 115 with the sidelink data to be transmitted can be associated with a priority (e.g., based on a three-bit indicator), and the priority can be compared with the priority indication 210 transmitted by the base station. In some examples, the priority of the sidelink data can be lower than the threshold priority of the priority indication 210, and the UE 115 can not transmit the sidelink data. In some other examples, the priority of the sidelink data can be higher than the threshold priority of the priority indication 210, and the UE 115 can transmit the sidelink data.

[0104] In some cases, the priority bit can be associated with each transmission, and the bit can be compared to determine the preemption. For example, the three bits of the side link transmission can be compared with the three bits of another side link transmission to determine whether the side link transmission can preempt other side link transmissions. In some other cases, the device can implement thresholding to determine the priority of the side link transmission, or the device can implement a decision algorithm or other decision-making process. For example, a priority value (for example, a value from 0 to 7) can be associated with the side link transmission, and it can be determined based on comparing the priority value with a threshold value (such as the priority threshold value included in the priority indication 210) whether the side link transmission preempts the standard uplink transmission. In some cases, the side link transmission with a priority between 0 and 5 can be considered as a low priority, and the side link transmission can not preempt the standard uplink transmission. The side link transmission with a priority between 6 and 7 can be a high priority, and the side link transmission can preempt the standard uplink transmission. However, the uplink URLLC transmission can preempt the side link transmission associated with any priority value. In some embodiments, the priority definitions for uplink access and sidelink may be different (eg, priority thresholds may be different, priority values ​​may be different, priorities assigned to different communication types or directions may be different, etc.).

[0105] In some examples, base station 105-a may send a grant (e.g., a configuration grant) to one or more UEs 115 in wireless coverage area 110-a that may indicate resources allocated for sidelink transmissions. In some cases, the configuration grant may indicate periodic resources that UE 115 may use to schedule sidelink transmissions. In some cases, base station 105-a may determine to use the resources indicated by the grant for high priority uplink or sidelink transmissions (e.g., uplink or sidelink transmissions that meet a priority threshold), which may improve the reliability of high priority uplink or sidelink communications and the probability of success of high priority transmissions. For example, base station 105-a may identify an increase in high priority traffic and may determine to use the resources allocated in the configuration grant to transmit the higher priority traffic. In this case, base station 105-a may transmit a cancellation indication 205 to one or more of UEs 115-a, 115-b, 115-c, or 115-d, which instructs UE 115 to cancel or refrain from scheduling lower priority transmissions (e.g., transmissions having a priority lower than a priority threshold included in priority indication 210). Priority indication 210 may indicate a priority threshold p so as to cancel transmissions having a priority less than priority threshold p in the time-frequency resources indicated by the grant (e.g., cancellation indication 205 may include priority indication 210 for a set of time-frequency resources to which the cancellation indication applies). In some cases, cancellation indication 205 may reduce the amount of traffic or interference to increase the reliability of high priority transmissions.

[0106] Figure 3 An example of a wireless communication system 300 that supports preferential cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. In some examples, the wireless communication system 300 can implement aspects of the wireless communication system 100 or 200. For example, the wireless communication system 300 can include a wireless communication system that can be used as a reference. Figure 1 The described corresponding device examples include communications between each UE 115 and a base station 105-b.

[0107] In some examples, a high priority URLLC uplink transmission 305 may preempt a sidelink transmission 315 in a time-frequency resource (e.g., a time slot) allocated for a low priority sidelink communication. The base station 105-b may indicate periodic resources for sidelink transmissions between UEs in the wireless coverage area 110b. Based on identifying URLLC data to be transmitted, the base station 105-b may use the periodic resources for the URLLC transmission, or the base station 105-b may use the periodic resources for other sidelink transmissions as well as the URLLC transmission.

[0108] To improve reliability of URLLC uplink transmissions and reduce interference, in some cases base station 105-b may provide one or more transmission cancellation indications 310 to UE 115-a, 115-b, 115-c, or 115-d, which command UE 115 to cancel or refrain from scheduling lower priority transmissions, such as sidelink transmissions 315 or other transmissions having a priority below a priority threshold.

[0109] In some examples, the cancellation indication 310 may include a priority indication indicating a priority threshold p so as to cancel a transmission having a priority less than p (e.g., a sidelink transmission 315). In some cases, the cancellation indication 310 may reduce interference from a lower priority transmission during the transmission of a higher priority URLLC transmission 305. In some examples, a UE (such as one or more of UEs 115-a, 115-b, 115-c, or 115-d) may receive the cancellation indication 310. One or more UEs 115 may send the cancellation indication 310 including the priority indication p to one or more other UEs (e.g., one or more of UEs 115-a, 115-b, 115-c, or 115-d) using a sidelink transmission to notify the other UEs to cancel or suppress scheduling of a lower priority transmission (e.g., a transmission having a priority less than the priority threshold included in the priority indication).

[0110] Figure 4 An example of a wireless communication system 400 that supports preferential cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. In some examples, the wireless communication system 400 can implement aspects of the wireless communication systems 100, 200, or 300. For example, the wireless communication system 400 can include a wireless communication system that can be used as a reference. Figure 1 The described corresponding device examples include communications between each UE 115 (eg, UE 115 - c ) and a base station 105 - c .

[0111] In some examples, a high priority URLLC sidelink transmission 405 can preempt another lower priority sidelink transmission 410 in the time-frequency resources (e.g., time slots, mini-slots, symbols) allocated for sidelink communications. In some examples, the base station 105-c can indicate periodic resources for sidelink transmissions between UEs in the wireless coverage area 110-c. Based on the identification of high priority sidelink data to be transmitted (e.g., URLLC sidelink transmission), the base station 105-c can use periodic resources for URLLC sidelink transmissions, or the base station 105-c can use periodic resources for lower priority sidelink transmissions and URLLC sidelink transmissions, or use them for URLLC sidelink transmissions that replace lower priority sidelink transmissions. In some cases, UE 115-b can transmit a scheduling request 420 to notify the base station 105-c of the high priority sidelink transmission 405.

[0112] To improve reliability of sidelink URLLC transmissions and reduce interference between high priority and low priority sidelink communications, in some cases base station 105-c may provide one or more transmission cancellation indications 415 to UE 115-a, 115-b, 115-c, or 115-d, commanding UE 115 to cancel or refrain from scheduling lower priority transmissions, such as sidelink transmission 410 or other transmissions having a priority below a priority threshold.

[0113] Additionally or alternatively, base station 105-c may transmit cancellation indication 415 using common periodic resources that may be allocated to one or more of UEs 115-a, 115-b, 115-c, or 115-d in coverage area 110-c. In some examples, cancellation indication 415 may include a priority indication indicating a priority threshold p to cancel transmissions (e.g., sidelink transmissions 410) having a priority less than p. In some cases, cancellation indication 415 may reduce interference from lower priority sidelink transmissions during transmissions of higher priority sidelinks.

[0114] In some examples, the cancellation indication 415 can be used to improve the reliability of high priority transmissions. In some examples, one or more of UEs 115-a, 115-b, 115-c, or 115-d can receive the cancellation indication 415. One or more UEs 115 can use a sidelink transmission to send the cancellation indication 415 including the priority indication p to one or more other UEs (e.g., one or more of UEs 115-a, 115-b, 115-c, or 115-d) to notify the one or more other UEs to cancel or refrain from scheduling a lower priority transmission (e.g., a transmission having a priority less than a priority threshold included in the priority indication).

[0115] Figure 5 An example of a wireless communication system 500 that supports preferential cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. In some examples, the wireless communication system 500 can implement aspects of the wireless communication systems 100, 200, 300, or 400. For example, the wireless communication system 500 can include a wireless communication system that can be used as a reference. Figure 1 The described corresponding device examples include communications between each UE 115 (e.g., UE 115-d) and base station 105-d.

[0116] In some examples, a high priority URLLC sidelink transmission 505 may preempt a low priority uplink transmission in a time-frequency resource (e.g., a time slot) allocated for uplink eMBB communications between a UE 115-a and a base station 105-d. The base station 105-d may indicate periodic resources for uplink transmissions between one or more of the UEs 115-a, 115-b, 115-c, or 115-d and the base station 105-d. Based on identifying a high priority (e.g., URLLC) sidelink transmission 505, the base station 105-d may use periodic resources for transmitting the high priority sidelink transmission. In some cases, the base station 105-d may identify a high priority sidelink transmission based on receiving a scheduling request 510 from the UE 115-b.

[0117] To improve the reliability of the sidelink URLLC transmission and reduce interference from lower priority transmissions, in some cases, the base station 105-d may transmit a transmission cancellation indication 515 to one or more of the UEs 115-a, 115-b, 115-c, or 115-d, which instructs the UE to cancel or refrain from scheduling lower priority transmissions, such as eMBB uplink transmissions (e.g., transmissions with a priority below a priority threshold). In this case, the base station 105-d may transmit the cancellation indication 515 to the one or more UEs using configured periodic resources.

[0118] In some examples, the cancellation indication 515 may include a priority indication indicating a priority threshold p so as to cancel uplink transmissions having a priority less than p. In some examples, issuing the cancellation indication 515 may reduce interference and total signaling traffic from lower priority uplink transmissions and may increase the reliability of higher priority transmissions. In some examples, one or more of UEs 115-a, 115-b, 115-c, or 115-d may receive the cancellation indication 515 including the priority indication p and may transmit the cancellation indication to other UEs to notify the other UEs to cancel or refrain from scheduling lower priority transmissions (e.g., transmissions having a priority less than the priority threshold included in the priority indication).

[0119] Figure 6 An example of a process flow diagram 600 is shown to support preferential cancellation of sidelinks and uplinks according to aspects of the present disclosure. In some examples, the process flow diagram 600 can implement aspects of the wireless communication system 100, 200, 300, 400, or 500. For example, the process flow diagram 600 can describe a method that can be used as a reference. Figure 1 The described corresponding devices illustrate communication between a base station 105 - e and a UE 115 - e .

[0120] At 605, the base station 105-e may transmit a grant to the UE 115-e. The grant may be a configuration grant indicating a set of time-frequency resources allocated for use by the UE 115-e for sidelink or uplink transmissions. In some cases, the set of time-frequency resources may be periodic.

[0121] In 610, the UE 115-e may receive the grant and identify a set of time-frequency resources configured for the UE 115-e or a group of UEs including the UE 115-e.

[0122] In 615, the base station 105-e may determine a priority of a message to be transmitted via a portion of the set of time-frequency resources allocated to the UE 115-e. In some examples, the message may be an uplink message or a sidelink message. Based on the priority of the message, the base station 105-e may determine a priority threshold. The priority threshold may be the same as the priority of the message, or may be less than or greater than the priority of the message. This determination may be made based on channel conditions, network traffic, capacity, link budget, etc.

[0123] In some examples, base station 105-e may identify a transmission of an uplink message by another UE via a portion of a set of time-frequency resources. Base station 105-e may determine a priority threshold based on the uplink message to be transmitted by the other UE. In some cases, the priority threshold may correspond to a priority value (e.g., an indication of high priority or low priority) of the uplink message.

[0124] In 620, the base station 105-e may transmit an indication (e.g., a cancel indication) commanding the UE 115-e to cancel a transmission having a second priority less than a priority threshold. Based on the priority of the message, the cancel indication may command the UE 115-e to cancel the transmission or suppress the message scheduled on a portion of the set of time-frequency resources. The base station 105-e may transmit the cancel indication to one or more UEs in a group of UEs (e.g., including the UE 115-e and other UEs). In some cases, the cancel indication may cancel the sidelink transmission having the second priority. In some examples, the base station 105-e may identify the transmission of the uplink message by receiving a scheduling request for the transmission of the uplink message from the other UE.

[0125] In some other examples, the base station 105-e may identify the transmission of a sidelink message by other UEs via a portion of a set of time-frequency resources. In some cases, the base station 105-e may identify the transmission of a sidelink message by receiving a scheduling request for the transmission of a sidelink message to a third UE from other UEs of a group of UEs including UE 115-e. The base station 105-e may determine a priority threshold based on the sidelink message, the priority threshold corresponding to the sidelink message (e.g., a priority value of the sidelink message). The base station 105-e may transmit an indication to one or more UEs in a group of UEs (e.g., including UE 115-e and other UEs) based on the sidelink message. In some cases, the cancellation indication may include the priority threshold and may include an indication of a portion of a set of time-frequency resources.

[0126] At 625, UE 115-e may receive an indication (e.g., a cancel indication) commanding UE 115-e to cancel transmissions having a priority less than a priority threshold. In some examples, the cancel indication may command UE 115-e to cancel transmissions during at least a portion of the set of time-frequency resources.

[0127] At 630, the UE 115-e may determine whether to transmit one or more messages via at least a portion of the set of time-frequency resources. In some examples, the one or more messages may be sidelink or uplink messages. In some examples, the UE 115-e may determine that the one or more messages have a second priority greater than a priority threshold, and the UE 115-e may transmit the one or more messages based on determining that the priority of the one or more messages exceeds the priority threshold.

[0128] In some examples, UE 115-e may determine that one or more messages have a second priority that is less than a priority threshold. UE 115-e may refrain from transmitting the one or more messages based on the determination of the second priority.

[0129] In some other examples, the UE 115-e may identify resources scheduled for the uplink message. In some cases, the scheduled resources may overlap at least partially with a set of time-frequency resources indicated by the grant transmitted by the base station 105-e. In this case, the UE 115-e may refrain from transmitting the uplink message based on the indication and based on the uplink message having the second priority.

[0130] At 635, UE 115-e may transmit a preemption indication to a second UE 115-f. In some examples, the preemption indication may indicate cancellation of transmission of one or more messages from UE 115-e. In some other examples, UE 115-e may transmit an indication of a priority threshold to UE 115-f, which may indicate cancellation of transmissions having a priority less than the priority threshold. In some cases, the priority threshold may be included in the preemption indication.

[0131] Figure 7 A block diagram 700 of a device 705 supporting priority cancellation of a sidelink and an uplink according to aspects of the present disclosure is shown. The device 705 may be an example of aspects of the UE 115 described herein. The device 705 may include a receiver 710, a communication manager 715, and a transmitter 720. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0132] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to priority cancellation of sidelinks and uplinks, etc.). The information may be passed to other components of the device 705. The receiver 710 may be a reference Fig.10 Examples of various aspects of the transceiver 1020 are described. The receiver 710 may utilize a single antenna or a collection of antennas.

[0133] The communication manager 715 may receive from the base station a UE grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE, receive from the base station an indication commanding the UE to cancel transmissions having a priority lower than a priority threshold during at least a portion of the set of time-frequency resources, and determine, based on the indication, whether to transmit one or more messages via at least a portion of the set of time-frequency resources. The communication manager 715 may be an example of aspects of the communication manager 1010 described herein.

[0134] The communication manager 715 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 715 or its subcomponents may be performed by a general purpose processor, a DSP, an application specific integrated circuit (ASIC), an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0135] The communication manager 715 or its subcomponents may be physically located in different locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to aspects of the present disclosure, the communication manager 715 or its subcomponents may be separate and distinct components. In some examples, according to aspects of the present disclosure, the communication manager 715 or its subcomponents may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0136] Transmitter 720 can transmit signals generated by other components of device 705. In some examples, transmitter 720 can be co-located with receiver 710 in a transceiver module. For example, transmitter 720 can be a reference Fig.10 Examples of various aspects of the transceiver 1020 are described. The transmitter 720 may utilize a single antenna or a collection of antennas.

[0137] In some examples, the communication manager 715 may be implemented as an integrated circuit or chipset for a mobile device modem, and the receiver 710 and transmitter 720 may be implemented as analog components (e.g., amplifiers, filters, antennas, etc.) coupled to the mobile device modem to enable wireless transmission and reception.

[0138] The communication manager 715 described herein can be implemented to achieve one or more potential advantages. Each embodiment can enable mitigation of interference suffered by transmissions exceeding a threshold priority (e.g., such as URLLC transmissions). At least one embodiment can reduce delays and improve the reliability of high priority transmissions, and can reduce the number of signaling conflicts that occur between low priority and high priority data.

[0139] Based on implementing the priority cancellation techniques described herein, one or more processors of device 705 (e.g., a processor controlling one or more of or in conjunction with receiver 710, communications manager 715, and transmitter 720) can reduce delays in high priority transmissions and can increase the likelihood that high priority transmissions are successfully transmitted by network devices.

[0140] Figure 8 A block diagram 800 of a device 805 that supports priority cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The device 805 can be an example of aspects of the device 705 or UE 115 described herein. The device 805 may include a receiver 810, a communication manager 815, and a transmitter 835. The device 805 may also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0141] The receiver 810 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to priority cancellation of sidelinks and uplinks, etc.). The information may be passed to other components of the device 805. The receiver 810 may be a reference Fig.10 Examples of various aspects of the transceiver 1020 are described. The receiver 810 may utilize a single antenna or a collection of antennas.

[0142] Communications manager 815 may be an example of aspects of communications manager 715 described herein. Communications manager 815 may include authorization receiver 820, cancellation indication receiver 825, and communications priority component 830. Communications manager 815 may be an example of aspects of communications manager 1010 described herein.

[0143] The grant receiver 820 may receive a UE grant from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE.

[0144] The cancellation indication receiver 825 may receive an indication from the base station instructing the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources.

[0145] Communication priority component 830 can determine whether to transmit one or more messages via at least a portion of the set of time-frequency resources based on the indication.

[0146] Transmitter 835 can transmit signals generated by other components of device 805. In some examples, transmitter 835 can be co-located with receiver 810 in a transceiver module. For example, transmitter 835 can be a reference Fig.10 Examples of various aspects of the transceiver 1020 are described. The transmitter 835 can utilize a single antenna or a collection of antennas.

[0147] Fig. 9 A block diagram 900 of a communication manager 905 is shown that supports priority cancellation of sidelinks and uplinks according to aspects of the present disclosure. The communication manager 905 can be an example of aspects of the communication manager 715, the communication manager 815, or the communication manager 1010 described herein. The communication manager 905 can include an authorization receiver 910, a cancellation indication receiver 915, a communication priority component 920, a preemption indication component 925, and a resource identification module 930. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0148] The grant receiver 910 may receive a UE grant from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE. In some cases, the granted set of time-frequency resources is periodic.

[0149] Resource identification module 930 may identify additional resources scheduled for uplink messages from the UE, wherein the additional resources at least partially overlap with a set of time-frequency resources indicated by the grant.

[0150] The cancel indication receiver 915 can receive an indication from the base station instructing the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the time-frequency resource set. The communication priority component 920 can determine whether to transmit one or more messages via at least a portion of the time-frequency resource set based on the indication.

[0151] In some other examples, the communication priority component 920 can transmit an indication of a priority threshold to the second UE, which indicates to cancel the transmission having a priority less than the priority threshold. In some examples, the communication priority component 920 can determine to transmit one or more messages based on the one or more messages having a second priority greater than the priority threshold.

[0152] In some examples, the communication priority component 920 can determine to suppress transmission of one or more messages based on the one or more messages having a second priority less than a priority threshold. In some examples, the communication priority component 920 can suppress transmission of uplink messages based on the indication and the uplink message having a second priority.

[0153] In some cases, an indication of a priority threshold is included in the preemption indication.In some cases, the one or more messages are sidelink messages or uplink messages.

[0154] Preemption indication component 925 may transmit a preemption indication to the second UE indicating cancellation of transmission of one or more messages from the UE based on determining to refrain from transmission.

[0155] Fig.10 A schematic diagram of a system 1000 including a device 1005 that supports priority cancellation of sidelinks and uplinks according to various aspects of the present disclosure is shown. The device 1005 may be an example of a device 705, a device 805, or a UE 115 described herein or include components thereof. The device 1005 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communication manager 1010, an I / O controller 1015, a transceiver 1020, an antenna 1025, a memory 1030, and a processor 1040. These components may be in electronic communication via one or more buses (e.g., a bus 1045).

[0156] The communication manager 1010 can receive a UE authorization from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE, receive an indication from the base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources, and determine, based on the indication, whether to transmit one or more messages via at least a portion of the set of time-frequency resources.

[0157] I / O controller 1015 can manage input and output signals for device 1005. I / O controller 1015 can also manage peripheral devices that are not integrated into device 1005. In some cases, I / O controller 1015 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1015 can utilize an operating system, such as Or other known operating systems. In other cases, I / O controller 1015 can represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1015 can be implemented as part of a processor. In some cases, a user can interact with device 1005 via I / O controller 1015 or via hardware components controlled by I / O controller 1015.

[0158] The transceiver 1020 can communicate bidirectionally via one or more antennas, wired or wireless links as described herein. For example, the transceiver 1020 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1020 can also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and demodulate packets received from the antenna.

[0159] In some cases, a wireless device may include a single antenna 1025. However, in some cases, a device may have more than one antenna 1025 capable of transmitting or receiving multiple wireless transmissions simultaneously.

[0160] Memory 1030 may include RAM and ROM. Memory 1030 may store computer-readable, computer-executable code 1035 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 1030 may contain, among other things, a BIOS that may control basic hardware or software operations (such as interaction with peripheral components or devices).

[0161] Processor 1040 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1040 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into processor 1040. Processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1030) to cause device 1005 to perform various functions (e.g., functions or tasks that support priority cancellation of sidelinks and uplinks).

[0162] The code 1035 may include instructions to implement various aspects of the present disclosure, including instructions to support wireless communications. The code 1035 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 1035 may not be directly executable by the processor 1040, but may (e.g., when the code 1035 is compiled and executed) cause the computer to perform the functions described herein.

[0163] Fig.11 A block diagram 1100 of a device 1105 supporting preferential cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the base station 105 described herein. The device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1120. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0164] The receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to priority cancellation of sidelinks and uplinks, etc.). The information may be passed to other components of the device 1105. The receiver 1110 may be a reference Fig.14 Examples of various aspects of the transceiver 1420 are described. The receiver 1110 may utilize a single antenna or a collection of antennas.

[0165] The communication manager 1115 may: transmit to the UE a grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; determine a priority of a message for transmission via a portion of the set of time-frequency resources, the message being one of the uplink or the sidelink; and, based on the priority of the message, transmit an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during the portion of the set of time-frequency resources. The communication manager 1115 may be an example of aspects of the communication manager 1410 described herein.

[0166] The communication manager 1115 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1115 or its subcomponents may be performed by a general purpose processor, a DSP, an application specific integrated circuit (ASIC), an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0167] The communication manager 1115 or its subcomponents may be physically located in different locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to aspects of the present disclosure, the communication manager 1115 or its subcomponents may be separate and distinct components. In some examples, according to aspects of the present disclosure, the communication manager 1115 or its subcomponents may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0168] Transmitter 1120 can transmit signals generated by other components of device 1105. In some examples, transmitter 1120 can be co-located with receiver 1110 in a transceiver module. For example, transmitter 1120 can be a reference Fig.14 Examples of various aspects of the transceiver 1420 are described. The transmitter 1120 may utilize a single antenna or a collection of antennas.

[0169] Fig.12 A block diagram 1200 of a device 1205 supporting preferential cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The device 1205 may be an example of aspects of the device 1105, or base station 105, described herein. The device 1205 may include a receiver 1210, a communication manager 1215, and a transmitter 1230. The device 1205 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0170] The receiver 1210 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to priority cancellation of sidelinks and uplinks, etc.). The information may be passed to other components of the device 1205. The receiver 1210 may be a reference Fig.14 Examples of various aspects of the transceiver 1420 are described. The receiver 1210 may utilize a single antenna or a collection of antennas.

[0171] The communications manager 1215 may be an example of aspects of the communications manager 1115 described herein. The communications manager 1215 may include a grant transmitter 1220 and a cancel indication transmitter 1225. The communications manager 1215 may be an example of aspects of the communications manager 1410 described herein.

[0172] The grant transmitter 1220 may transmit to the UE a grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE.

[0173] The cancel indication transmitter 1225 can determine the priority of a message for transmission via a portion of the time-frequency resource set, which message is one of an uplink or a sidelink; and, based on the priority of the message, transmit an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during the portion of the time-frequency resource set.

[0174] Transmitter 1230 can transmit signals generated by other components of device 1205. In some examples, transmitter 1230 can be co-located with receiver 1210 in a transceiver module. For example, transmitter 1230 can be a reference Fig.14 Examples of various aspects of transceiver 1420 are described. Transmitter 1230 may utilize a single antenna or a collection of antennas.

[0175] Fig.13 A block diagram 1300 of a communication manager 1305 is shown that supports priority cancellation of sidelinks and uplinks according to aspects of the present disclosure. The communication manager 1305 can be an example of aspects of the communication manager 1115, the communication manager 1215, or the communication manager 1410 described herein. The communication manager 1305 can include a grant transmitter 1310, a cancellation indication transmitter 1315, an uplink transmission receiver 1320, a communication priority component 1325, a scheduling request receiver 1330, and a sidelink identification module 1335. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0176] The grant transmitter 1310 may transmit to the UE a grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE. In some cases, the granted set of time-frequency resources is periodic.

[0177] The cancel indication transmitter 1315 may determine a priority for a message for transmission via a portion of the time-frequency resource set, the message being one of an uplink or sidelink message. In some examples, the cancel indication transmitter 1315 may transmit an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during a portion of the time-frequency resource set based on the priority of the message.

[0178] In some examples, the cancel indication transmitter 1315 may transmit an indication to one or more UEs in the group of UEs based on an uplink message to cancel the sidelink transmission with a second priority. In some examples, the cancel indication transmitter 1315 may transmit an indication to one or more UEs based on a sidelink message, the cancel indication including a priority threshold.

[0179] In some cases, the cancellation indication includes a priority threshold. In some cases, the cancellation indication includes an indication of a portion of a set of time-frequency resources.

[0180] The uplink transmission receiver 1320 may identify a transmission of an uplink message by a second UE via a portion of a set of time-frequency resources. The communication priority component 1325 may determine a priority threshold based on the uplink message. The sidelink identification module 1335 may identify a transmission of a sidelink message by a second UE via a portion of a set of time-frequency resources.

[0181] Scheduling request receiver 1330 may receive a scheduling request for transmission of an uplink message from a second UE. In some examples, scheduling request receiver 1330 may receive a scheduling request for transmission of a sidelink message from a second UE of a group of UEs to a third UE.

[0182] In some examples, the communication priority component 1325 can determine a priority threshold based on the sidelink message, wherein the priority threshold corresponds to the sidelink message. In some cases, the priority threshold corresponds to the priority value of the uplink message. In some cases, the priority threshold corresponds to the priority value of the sidelink message.

[0183] Fig.14 A schematic diagram of a system 1400 including a device 1405 that supports priority cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The device 1405 may be an example of or include components of the device 1105, device 1205, or base station 105 described herein. The device 1405 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communication manager 1410, a network communication manager 1415, a transceiver 1420, an antenna 1425, a memory 1430, a processor 1440, and an inter-station communication manager 1445. These components may be in electronic communication via one or more buses (e.g., bus 1450).

[0184] The communications manager 1410 may transmit to the UE an authorization indicating a set of time-frequency resources configured for sidelink or uplink communications of the UE; determine a priority of a message for transmission via a portion of the set of time-frequency resources, the message being one of the uplink or the sidelink; and, based on the priority of the message, transmit an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during the portion of the set of time-frequency resources.

[0185] The network communications manager 1415 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1415 may manage the transmission of data communications for client devices (such as one or more UEs 115).

[0186] The transceiver 1420 may communicate bidirectionally via one or more antennas, wired or wireless links as described herein. For example, the transceiver 1420 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1420 may also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0187] In some cases, a wireless device may include a single antenna 1425. However, in some cases, a device may have more than one antenna 1425 capable of transmitting or receiving multiple wireless transmissions simultaneously.

[0188] Memory 1430 may include RAM, ROM, or a combination thereof. Memory 1430 may store computer readable code 1435 including instructions that, when executed by a processor (e.g., processor 1440), cause the device to perform various functions described herein. In some cases, memory 1430 may include, among other things, a BIOS that may control basic hardware or software operations (such as interaction with peripheral components or devices).

[0189] Processor 1440 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1440 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into processor 1440. Processor 1440 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1430) to cause device 1405 to perform various functions (e.g., functions or tasks that support priority cancellation of sidelinks and uplinks).

[0190] The inter-site communication manager 1445 may manage communications with other base stations 105 and may include a controller or scheduler for controlling communications with UE 115 in coordination with other base stations 105. For example, the inter-site communication manager 1445 may coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, the inter-site communication manager 1445 may provide an X2 interface in an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0191] The code 1435 may include instructions to implement various aspects of the present disclosure, including instructions to support wireless communications. The code 1435 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 1435 may not be directly executable by the processor 1440, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein.

[0192] Fig.15 A flow chart illustrating a method 1500 for supporting priority cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1500 may be implemented by reference to Figures 7 to 10 The communication manager described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0193] In 1505, the UE may receive a UE grant from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be described with reference to Figures 7 to 10 Describes the authorization receiver implementation.

[0194] In 1510, the UE may receive an indication from a base station instructing the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of a set of time-frequency resources. The operations of 1510 may be performed according to methods described herein. In some examples, aspects of the operations of 1510 may be described with reference to Figures 7 to 10 The described cancellation directive receiver performs.

[0195] In 1515, the UE may determine, based on the indication, whether to transmit one or more messages via at least a portion of the set of time-frequency resources. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be described with reference to Figures 7 to 10Describes the communication priority component implementation.

[0196] Fig.16 A flow chart illustrating a method 1600 for supporting priority cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1600 may be implemented by reference to Figures 7 to 10 The communication manager described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0197] In 1605, the UE may receive a UE grant from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be described with reference to Figures 7 to 10 Describes the authorization receiver implementation.

[0198] In 1610, the UE may receive an indication from a base station instructing the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of a set of time-frequency resources. The operations of 1610 may be performed according to methods described herein. In some examples, aspects of the operations of 1610 may be described with reference to Figures 7 to 10 The described cancellation directive receiver performs.

[0199] In 1615, the UE may determine, based on the indication, whether to transmit one or more messages via at least a portion of the set of time-frequency resources. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be described with reference to Figures 7 to 10 Describes the communication priority component implementation.

[0200] At 1620, the UE may determine to refrain from transmitting the one or more messages based on the one or more messages having a second priority less than a priority threshold. The operations of 1620 may be performed according to methods described herein. In some examples, aspects of the operations of 1620 may be described with reference to Figures 7 to 10 Describes the communication priority component implementation.

[0201] Fig.17 A flow chart illustrating a method 1700 for supporting priority cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1700 may be implemented by reference to Figures 7 to 10The communication manager described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0202] In 1705, the UE may receive a UE grant from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be described with reference to Figures 7 to 10 Describes the authorization receiver implementation.

[0203] In 1710, the UE may receive an indication from a base station instructing the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of a set of time-frequency resources. The operations of 1710 may be performed according to methods described herein. In some examples, aspects of the operations of 1710 may be described with reference to Figures 7 to 10 The described cancellation directive receiver performs.

[0204] In 1715, the UE may determine, based on the indication, whether to transmit one or more messages via at least a portion of the set of time-frequency resources. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be described with reference to Figures 7 to 10 Describes the communication priority component implementation.

[0205] At 1720, the UE may determine to refrain from transmitting the one or more messages based on the one or more messages having a second priority less than a priority threshold. The operations of 1720 may be performed according to methods described herein. In some examples, aspects of the operations of 1720 may be described with reference to Figures 7 to 10 Describes the communication priority component implementation.

[0206] In 1725, the UE may transmit, to the second UE, a preemption indication indicating cancellation of transmission of one or more messages from the UE based on the determination to suppress transmission. The operations of 1725 may be performed according to the methods described herein. In some examples, aspects of the operations of 1725 may be described with reference to Figures 7 to 10 The preemption instructions described in this document are executed by the component.

[0207] Fig.18 A flow chart illustrating a method 1800 for supporting priority cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1800 may be implemented by reference to Figures 7 to 10The communication manager described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0208] In 1805, the UE may receive a UE grant from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE. The operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be described with reference to Figures 7 to 10 Describes the authorization receiver implementation.

[0209] In 1810, the UE may receive an indication from a base station instructing the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of a set of time-frequency resources. The operations of 1810 may be performed according to methods described herein. In some examples, aspects of the operations of 1810 may be described with reference to Figures 7 to 10 The described cancellation directive receiver performs.

[0210] In 1815, the UE may determine, based on the indication, whether to transmit one or more messages via at least a portion of the set of time-frequency resources. The operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be described with reference to Figures 7 to 10 Describes the communication priority component implementation.

[0211] In 1820, the UE may determine to transmit the one or more messages based on the one or more messages having a second priority greater than a priority threshold. The operations of 1820 may be performed according to the methods described herein. In some examples, aspects of the operations of 1820 may be described with reference to Figures 7 to 10 Describes the communication priority component implementation.

[0212] Fig.19 A flow chart illustrating a method 1900 for supporting priority cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The operations of the method 1900 may be implemented by the base station 105 or components thereof as described herein. For example, the operations of the method 1900 may be implemented by reference to Figures 11 to 14 The communication manager described herein performs. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0213] In 1905, the base station may transmit to the UE a grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE. The operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be described with reference to Figures 11 to 14 Describes the authorization transporter implementation.

[0214] At 1910, a base station may determine a priority for a message to be transmitted via a portion of a set of time-frequency resources, the message being one of an uplink or a sidelink. The operations of 1910 may be performed according to methods described herein. In some examples, aspects of the operations of 1910 may be described with reference to Figures 11 to 14 The cancellation instruction described is executed by the transporter.

[0215] In 1915, the base station may transmit an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during a portion of the set of time-frequency resources based on the priority of the message. The operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be described with reference to Figures 11 to 14 The cancellation instruction described is executed by the transporter.

[0216] Fig. 20 A flow chart illustrating a method 2000 for supporting priority cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The operations of the method 2000 may be implemented by the base station 105 or components thereof as described herein. For example, the operations of the method 2000 may be implemented by reference to Figures 11 to 14 The communication manager described herein performs. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0217] In 2005, the base station may transmit to the UE a grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE. The operations of 2005 may be performed according to the methods described herein. In some examples, aspects of the operations of 2005 may be described by reference to Figures 11 to 14 Describes the authorization transporter implementation.

[0218] At 2010, the base station may determine a priority for a message to be transmitted via a portion of a set of time-frequency resources, the message being one of an uplink or a sidelink. The operations of 2010 may be performed according to the methods described herein. In some examples, aspects of the operations of 2010 may be described with reference to Figures 11 to 14 The cancellation instruction described is executed by the transporter.

[0219] In 2015, the base station may transmit, based on the priority of the message, an indication commanding the UE to cancel transmissions having a second priority less than the priority threshold during a portion of the set of time-frequency resources. The operations of 2015 may be performed according to the methods described herein. In some examples, aspects of the operations of 2015 may be described with reference to Figures 11 to 14 The cancellation instruction described is executed by the transporter.

[0220] In 2020, the base station may identify a transmission of an uplink message by a second UE via a portion of the set of time-frequency resources. The operations of 2020 may be performed according to the methods described herein. In some examples, aspects of the operations of 2020 may be described with reference to Figures 11 to 14 An uplink transmission receiver is described that performs the following.

[0221] In 2025, the base station may determine a priority threshold based on the uplink message. The operations of 2025 may be performed according to the methods described herein. In some examples, aspects of the operations of 2025 may be described by reference to Figures 11 to 14 Describes the communication priority component implementation.

[0222] In 2030, the base station may transmit, based on the uplink message, to one or more UEs in the group of UEs an indication for canceling the sidelink transmission having the second priority. The operation of 2030 may be performed according to the method described herein. In some examples, various aspects of the operation of 2030 may be described with reference to Figures 11 to 14 The cancellation instruction described is executed by the transporter.

[0223] Fig.21 A flow chart illustrating a method 2100 for supporting priority cancellation of sidelinks and uplinks according to aspects of the present disclosure is shown. The operations of the method 2100 may be implemented by the base station 105 or components thereof as described herein. For example, the operations of the method 2100 may be implemented by reference to Figures 11 to 14 The communication manager described herein performs. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0224] In 2105, the base station may transmit to the UE a grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE. The operations of 2105 may be performed according to the methods described herein. In some examples, aspects of the operations of 2105 may be described with reference to Figures 11 to 14 Describes the authorization transporter implementation.

[0225] At 2110, the base station may determine a priority for a message to be transmitted via a portion of the set of time-frequency resources, the message being one of an uplink or a sidelink. The operations of 2110 may be performed according to methods described herein. In some examples, aspects of the operations of 2110 may be described with reference to Figures 11 to 14 The cancellation instruction described is executed by the transporter.

[0226] In 2115, the base station may transmit an indication commanding the UE to cancel transmissions having a second priority less than the priority threshold during a portion of the set of time-frequency resources based on the priority of the message. The operations of 2115 may be performed according to the methods described herein. In some examples, aspects of the operations of 2115 may be described with reference to Figures 11 to 14 The cancellation instruction described is executed by the transporter.

[0227] At 2120, the base station may identify a transmission of a sidelink message by a second UE via a portion of the set of time-frequency resources. The operations of 2120 may be performed according to methods described herein. In some examples, aspects of the operations of 2120 may be described with reference to Figures 11 to 14 The sidelink identification module described is executed.

[0228] In 2125, the base station may determine a priority threshold based on the sidelink message, wherein the priority threshold corresponds to the sidelink message. The operations of 2125 may be performed according to the methods described herein. In some examples, aspects of the operations of 2125 may be described with reference to Figures 11 to 14 Describes the communication priority component implementation.

[0229] In 2130, the base station may transmit an indication to one or more UEs in the group of UEs based on the sidelink message, the cancellation indication including the priority threshold. The operation of 2130 may be performed according to the methods described herein. In some examples, aspects of the operation of 2130 may be described with reference to Figures 11 to 14 The cancellation instruction described is executed by the transporter.

[0230] The following provides an overview of various aspects of the present disclosure:

[0231] Aspect 1: A method for performing wireless communications at a UE, comprising: receiving a UE authorization from a base station indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; receiving an indication from the base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources; and, based at least in part on the indication, determining whether to transmit one or more messages via at least a portion of the set of time-frequency resources.

[0232] Aspect 2: The method according to aspect 1 also includes: determining to suppress transmission of one or more messages based at least in part on the one or more messages having a second priority less than a priority threshold.

[0233] Aspect 3: The method according to aspect 2 also includes: transmitting a preemption indication to the second UE indicating cancellation of transmission of one or more messages from the UE based at least in part on the determination to suppress transmission.

[0234] Aspect 4: The method according to any one of aspects 2 to 3 further includes: transmitting an indication of a priority threshold to the second UE, the indication indicating that transmissions having a priority less than the priority threshold are cancelled.

[0235] Aspect 5: The method according to aspect 4, wherein an indication of a priority threshold is included in the preemption indication.

[0236] Aspect 6: The method according to any one of Aspects 2 to 5 further includes: identifying additional resources scheduled for uplink messages from the UE, wherein the additional resources at least partially overlap with a set of time-frequency resources indicated by the authorization; and suppressing transmission of the uplink message at least partially based on the indication and the uplink message having a second priority.

[0237] Aspect 7: The method according to any one of aspects 1 to 6 further includes: determining to transmit one or more messages based at least in part on the one or more messages having a second priority greater than a priority threshold.

[0238] Aspect 8: The method according to any one of aspects 1 to 7, wherein the one or more messages are sidelink messages or uplink messages.

[0239] Aspect 9: The method according to any one of Aspects 1 to 8, wherein the authorized time-frequency resource set is periodic.

[0240] Aspect 10: A method for performing wireless communications at a base station, comprising: transmitting to a UE an authorization indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; determining a priority of a message for transmission via a portion of the set of time-frequency resources, the message being one of the uplink or the sidelink; and, based at least in part on the priority of the message, transmitting an indication commanding the UE to cancel transmissions having a second priority less than a priority threshold during a portion of the set of time-frequency resources.

[0241] Aspect 11: The method according to Aspect 10 also includes: identifying the transmission of an uplink message performed by a second UE via a portion of the time-frequency resource set; determining a priority threshold based at least in part on the uplink message; and transmitting an indication to cancel a sidelink transmission with a second priority to one or more UEs in the group of UEs based at least in part on the uplink message.

[0242] Aspect 12: The method according to aspect 11, wherein identifying the transmission of the uplink message includes: receiving a scheduling request for the transmission of the uplink message from the second UE.

[0243] Aspect 13: The method according to any one of aspects 11 to 12, wherein the priority threshold corresponds to the priority value of the uplink message.

[0244] Aspect 14: The method according to any one of Aspects 10 to 13 further includes: identifying the transmission of a sidelink message performed by a second UE via a portion of a time-frequency resource set; determining a priority threshold based at least in part on the sidelink message, wherein the priority threshold corresponds to the sidelink message; and transmitting an indication to one or more UEs in the group of UEs based at least in part on the sidelink message, wherein the indication includes the priority threshold.

[0245] Aspect 15: The method according to aspect 14 further includes: receiving a scheduling request for transmission of a sidelink message from a second UE of the group of UEs to a third UE.

[0246] Aspect 16: A method according to any one of Aspects 14 to 15, wherein the priority threshold corresponds to a priority value of the sidelink message.

[0247] Aspect 17: A method according to any one of aspects 10 to 16, wherein the indication includes a priority threshold.

[0248] Aspect 18: A method according to any one of aspects 10 to 17, wherein the indication comprises an indication of a portion of a set of time-frequency resources.

[0249] Aspect 19: The method according to any one of Aspects 10 to 18, wherein the authorized time-frequency resource set is periodic.

[0250] Aspect 20: An apparatus for performing wireless communication at a 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 the method described in any one of Aspects 1 to 9.

[0251] Aspect 21: An apparatus for performing wireless communication at a UE, comprising: at least one device configured to execute the method described in any one of aspects 1 to 9.

[0252] Aspect 22: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 1 to 9.

[0253] Aspect 23: An apparatus for performing wireless communications 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 the method described in any one of Aspects 10 to 19.

[0254] Aspect 24: An apparatus for performing wireless communication at a base station, comprising: at least one device configured to execute the method of any one of Aspects 10 to 19.

[0255] Aspect 25: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform the method of any one of aspects 10 to 19.

[0256] It should be noted that the methods described herein describe possible implementations, and that operations and steps may be rearranged or otherwise modified, and that other implementations are possible. In addition, aspects from two or more methods may be combined.

[0257] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Seamless OFDM (Flash-OFDM), and other systems and radio technologies not explicitly mentioned herein.

[0258] The information and signals described herein may be represented using a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0259] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in another case, 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, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0260] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted on a computer-readable medium. Other examples and implementations fall within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or any combination thereof. Features that implement the functions may also be physically located in different locations, including being distributed so that portions of the functions are implemented at different physical locations.

[0261] Computer-readable medium includes both non-transitory computer storage medium and communication medium, including any medium that is convenient to transfer a computer program from one place to another place.Non-transitory storage medium can be any available medium that can be accessed by a general or special computer.For example (but not limitation), non-transitory computer-readable medium can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage device, disk storage device or other magnetic storage device, or can be used to carry or store the desired program code device (mean) in the form of an instruction or data structure and can be accessed by a general or special computer or a general or special processor. Any other non-transitory medium. In addition, any connection is properly referred to as computer-readable medium. For example, if coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology (such as infrared, radio and microwave) are used to transmit software from a website, server or other remote sources, coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology (such as infrared, radio and microwave) are included in the definition of computer-readable medium. Disk and disc as used herein include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0262] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items followed by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list consisting of at least one of A, B, or C refers to A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be understood to refer to a closed set of conditions. For example, an example step described as "based on condition A" can 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 understood to be the same as the phrase "based at least in part on."

[0263] In the drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes the similar component. If only the first reference number is used in the specification, the description applies to any one of the similar components having the same first reference number, without regard to the second reference number or other subsequent reference numbers.

[0264] The description herein in conjunction with the accompanying drawings records example configurations and does not represent all examples that may be implemented or fall within the scope of the claims. The term "example" as used herein means "as an example, instance, or illustration," rather than "preferably" or "more advantageous than other examples." The detailed description includes specific details to provide an understanding of the described techniques. However, these techniques may be implemented without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0265] The description herein is to enable one of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure are obvious to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is to be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment UE, comprising: receiving, from a base station, a UE grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; receiving an indication from a base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources; determining, based at least in part on the indication, whether to transmit one or more messages via at least a portion of the set of time-frequency resources; determining to refrain from transmitting the one or more messages based at least in part on the one or more messages having a second priority level that is less than the priority threshold; identifying additional resources scheduled for uplink messages from the UE, wherein the additional resources at least partially overlap with the set of time-frequency resources indicated by the grant; as well as Based at least in part on the indication and the uplink message having the second priority, refraining from transmitting the uplink message.

2. The method according to claim 1, further comprising: Based at least in part on the determination to refrain from transmitting, a preemption indication is transmitted to the second UE indicating cancellation of transmission of one or more messages from the UE.

3. The method according to claim 1, further comprising: An indication of the priority threshold is transmitted to the second UE, the indication indicating that transmissions having a priority less than the priority threshold are to be cancelled.

4. The method according to claim 3, wherein: An indication of the priority threshold is included in the preemption indication.

5. The method according to claim 1, further comprising: A determination is made to transmit the one or more messages based at least in part on the one or more messages having a second priority that is greater than a priority threshold.

6. The method according to claim 1, wherein: One or more of the messages are sidelink messages or uplink messages.

7. The method according to claim 1, wherein: The authorized time-frequency resource set is periodic.

8. An apparatus for wireless communication at a user equipment UE, comprising: Means for receiving, from a base station, a UE grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; means for receiving an indication from a base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of a set of time-frequency resources; means for determining, based at least in part on the indication, whether to transmit one or more messages via the at least a portion of the set of time-frequency resources; means for determining to refrain from transmitting the one or more messages based at least in part on the one or more messages having a second priority level less than the priority threshold; means for identifying additional resources scheduled for uplink messages from the UE, wherein the additional resources at least partially overlap with the set of time-frequency resources indicated by the grant; and Means for refraining from transmitting the uplink message based at least in part on the indication and the uplink message having the second priority.

9. The apparatus according to claim 8, further comprising: Means for transmitting to a second UE a preemption indication indicating cancellation of transmission of one or more messages from the UE based at least in part on a determination to refrain from transmitting.

10. The apparatus according to claim 8, further comprising: Means for transmitting an indication of a priority threshold to a second UE, the indication indicating that transmissions having a priority less than the priority threshold are to be cancelled.

11. The device according to claim 10, wherein: An indication of the priority threshold is included in the preemption indication.

12. The apparatus according to claim 8, further comprising: Means for determining to transmit one or more messages based at least in part on the one or more messages having a second priority greater than a priority threshold.

13. The device according to claim 8, wherein: One or more of the messages are sidelink messages or uplink messages.

14. The device according to claim 8, wherein: The authorized time-frequency resource set is periodic.

15. An apparatus for performing wireless communication at a user equipment UE, the apparatus comprising: Memory; as well as at least one processor coupled to the memory, the at least one processor being configured to: receiving, from a base station, a UE grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; receiving an indication from a base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources; determining, based at least in part on the indication, whether to transmit one or more messages via at least a portion of the set of time-frequency resources; determining to refrain from transmitting the one or more messages based at least in part on the one or more messages having a second priority level that is less than the priority threshold; identifying additional resources scheduled for uplink messages from the UE, wherein the additional resources at least partially overlap with the set of time-frequency resources indicated by the grant; as well as Based at least in part on the indication and the uplink message having the second priority, refraining from transmitting the uplink message.

16. A non-transitory computer-readable storage medium having stored thereon instructions for wireless communication at a user equipment (UE), the instructions being executed by a processor to: receiving, from a base station, a UE grant indicating a set of time-frequency resources configured for sidelink or uplink communication of the UE; receiving an indication from a base station commanding the UE to cancel transmissions having a priority less than a priority threshold during at least a portion of the set of time-frequency resources; determining, based at least in part on the indication, whether to transmit one or more messages via at least a portion of the set of time-frequency resources; determining to refrain from transmitting the one or more messages based at least in part on the one or more messages having a second priority level that is less than the priority threshold; identifying additional resources scheduled for uplink messages from the UE, wherein the additional resources at least partially overlap with the set of time-frequency resources indicated by the grant; as well as Based at least in part on the indication and the uplink message having the second priority, refraining from transmitting the uplink message.

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