Priority indication for downlink preemption and uplink cancellation

Abstract

Methods, systems, and devices are provided for determining an operation state for a user equipment (UE) corresponding to how the UE applies a preemption indication.SOLUTION: In a wireless communication system, base stations 105 - b transmit a grant indicating time-frequency resources scheduled for UE115 - c. The UE identifies a priority of a channel associated with the scheduled resources. The base station determines the number of scheduled resources to be preempted or canceled and indicates these resources to the UE using the preemption indication. The UE determines the remaining time-frequency resources based on the preemption indication, the priority of the channel, the operation state, or a combination thereof.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] cross reference

[0001] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 977,037 by HOSSEINI et al., entitled "PRIORITY INDICATION FOR DOWNLINK PREEMPTION AND UPLINK CANCELLATION," filed February 14, 2020, and U.S. Patent Application No. 17 / 173,580 by HOSSEINI et al., entitled "PRIORITY INDICATION FOR DOWNLINK PREEMPTION AND UPLINK CANCELLATION," filed February 11, 2021, each of which is assigned to the assignee of the present application.

[0002] BACKGROUND OF THE INVENTION

[0002] The following relates generally to wireless communication, and more particularly to priority indication for downlink preemption and uplink cancellation. [Background technology]

[0003] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasts. These systems may be capable of supporting 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), LTE-Advanced (LTE-A), or LTE-A Pro systems, and fifth-generation (5G) systems, sometimes referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communication system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, sometimes known as user equipment (UE). Summary of the Invention

[0004] The described techniques relate to improved methods, systems, devices, and apparatuses that support priority indication for downlink preemption and uplink cancellation. Generally, the described techniques enable a base station to determine an operation state for a user equipment (UE), which may correspond to how the UE applies a preemption indication (e.g., a downlink preemption indication (DLPI) or an uplink cancellation indication (ULCI)). The base station may indicate the operation state to the UE using a parameter of a configuration message, within an information element of the configuration message, via control signaling, or the like. Furthermore, the base station may send a grant indicating scheduled time-frequency resources for a channel for the UE, and the UE may identify a priority of the channel associated with the scheduled time-frequency resource. The base station may determine the number of scheduled resources to be preempted or canceled and may indicate these resources to the UE using a preemption indication. The UE may determine the remaining time-frequency resources based on the preemption indication, the channel priority, and the operating state, and may use the remaining time-frequency resources to communicate with the base station.

[0005] A method of wireless communication in a UE is described. The method may include receiving, from a base station, a configuration message including parameters indicating an operation state by the UE to apply a preemption instruction based on a priority of a channel associated with the preemption instruction, identifying a priority of the channel and a scheduled time-frequency resource for the channel, receiving an instance of the preemption instruction, determining a remaining portion of the identified time-frequency resource based on the received instance of the preemption instruction and the identified priority of the channel, and communicating with the base station using the remaining portion of the time-frequency resource.

[0006] An apparatus for wireless communication in a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive, from a base station, a configuration message including parameters indicating an operation state by the UE to apply a preemption instruction based on a priority of a channel associated with the preemption instruction, identify a priority of the channel and time-frequency resources scheduled for the channel, receive an instance of the preemption instruction, determine a remaining portion of the identified time-frequency resources based on the received instance of the preemption instruction and the identified priority of the channel, and communicate with the base station using the remaining portion of the time-frequency resources.

[0007] Another apparatus for wireless communication in a UE is described. The apparatus may include means for receiving, from a base station, a configuration message including parameters indicating an operation state by the UE to apply a preemption instruction based on a priority of a channel associated with the preemption instruction, identifying a priority of the channel and scheduled time-frequency resources for the channel, receiving an instance of the preemption instruction, determining a remaining portion of the identified time-frequency resources based on the received instance of the preemption instruction and the identified priority of the channel, and communicating with the base station using the remaining portion of the time-frequency resources.

[0008] A non-transitory computer-readable medium storing code for wireless communication in a UE is described. The code may include instructions executable by a processor to receive, from a base station, a configuration message including parameters indicating an operation state by the UE to apply a preemption indication based on a priority of a channel associated with the preemption indication, identify a priority of the channel and time-frequency resources scheduled for the channel, receive an instance of the preemption indication, determine a remaining portion of the identified time-frequency resources based on the received instance of the preemption indication and the identified priority of the channel, and communicate with the base station using the remaining portion of the time-frequency resources.

[0009] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the preemption indication includes a DLPI.

[0010]

[0010] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for determining a set of time-frequency resources of the identified time-frequency resources scheduled for the channel, and refraining from monitoring the set of time-frequency resources based on a DLPI, where the set of time-frequency resources is non-overlapping with the remainder of the time-frequency resources.

[0011]

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining a set of time-frequency resources scheduled for a second channel associated with a second priority different from the priority of the channel, and monitoring the set of time-frequency resources for the second channel based on an operating state and DLPI associated with the priority, such that the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second channel may be associated with a different carrier than the channel.

[0013]

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for receiving a message indicating a set of time-frequency resources for the DLPI, monitoring the set of time-frequency resources for the DLPI, and receiving an instance of a preemption indication may be based on the monitoring.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the preemption indication includes a ULCI.

[0015]

[0015] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for determining a set of time-frequency resources of the identified time-frequency resources scheduled for the channel, and refraining from transmitting an uplink message using the set of time-frequency resources based on an ULCI, where the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0016]

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining a set of time-frequency resources scheduled for a second channel associated with a second priority different from the priority of the channel, and transmitting the second channel using the set of time-frequency resources based on the operating state and ULCI associated with the priority, where the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second channel may be associated with a different carrier than the channel.

[0018]

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for receiving a message indicating a set of time-frequency resources for the ULCI, monitoring the set of time-frequency resources for the ULCI, and receiving an instance of a preemption indication may be based on the monitoring.

[0019]

[0019] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for configuring a UE to monitor both DLPI and ULCI.

[0020]

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, configuring a UE to monitor both DLPI and ULCI may include operations, features, means, or instructions for receiving a first message that configures the UE to monitor DLPI and receiving a second message that configures the UE to monitor ULCI.

[0021]

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for determining a set of channels including channels to which the UE may apply a preemption indication based on an operating state.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the set of channels includes at least two channels with different priorities.

[0023]

[0023] A method of wireless communication in a base station is described. The method may include determining an operating state for a UE to apply the preemption indication based on a priority of a channel associated with the preemption indication, sending a configuration message to the UE including a parameter indicating the operating state, sending a grant to the UE indicating time-frequency resources scheduled for the channel, sending an instance of the preemption indication, determining a remaining portion of the identified time-frequency resources based on the instance of the preemption indication and the priority of the channel, and communicating with the UE using the remaining portion of the time-frequency resources.

[0024]

[0024] An apparatus for wireless communication in a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: determine an operating state for a UE to apply a preemption indication based on a priority of a channel associated with the preemption indication; send to the UE a configuration message including a parameter indicating the operating state; send to the UE a grant indicating scheduled time-frequency resources for the channel; send an instance of the preemption indication; determine a remaining portion of the identified time-frequency resources based on the instance of the preemption indication and the priority of the channel; and communicate with the UE using the remaining portion of the time-frequency resources.

[0025] Another apparatus for wireless communication in a base station is described. The apparatus may include means for determining an operating state for a UE to apply a preemption indication based on a priority of a channel associated with the preemption indication, sending a configuration message to the UE including a parameter indicating the operating state, sending a grant to the UE indicating scheduled time-frequency resources for the channel, sending an instance of the preemption indication, determining a remaining portion of the identified time-frequency resources based on the instance of the preemption indication and the priority of the channel, and communicating with the UE using the remaining portion of the time-frequency resources.

[0026] A non-transitory computer-readable medium storing code for wireless communications in a base station is described. The code may include instructions executable by a processor to: determine an operating state for a UE to apply a preemption indication based on a priority of a channel associated with the preemption indication; send a configuration message to the UE including a parameter indicating the operating state; send a grant to the UE indicating time-frequency resources scheduled for the channel; send an instance of the preemption indication; determine a remaining portion of the identified time-frequency resources based on the instance of the preemption indication and the priority of the channel; and communicate with the UE using the remaining portion of the time-frequency resources.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the preemption indication includes a DLPI.

[0028]

[0028] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for refraining from transmitting a channel using time-frequency resources based on the DLPI.

[0029]

[0029] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining a set of time-frequency resources for a second channel associated with a second priority different from the priority of the channel, and transmitting the second channel using the set of time-frequency resources based on an operating state and DLPI associated with the priority, where the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second channel may be associated with a different carrier than the channel.

[0031]

[0031] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for transmitting a message indicating a set of time-frequency resources for the DLPI and transmitting the DLPI using the set of time-frequency resources.

[0032] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the preemption indication includes a ULCI.

[0033]

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining a set of time-frequency resources of the identified time-frequency resources scheduled for the channel, and refraining from monitoring the set of time-frequency resources for uplink messages from the UE based on an ULCI, where the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0034]

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining a set of time-frequency resources for a second channel associated with a second priority different from the priority of the channel, and monitoring the set of time-frequency resources for the second channel based on the operating state and ULCI associated with the priority, such that the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0035]

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second channel may be associated with a different carrier than the channel.

[0036]

[0036] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for transmitting a message indicating a set of time-frequency resources for the ULCI and transmitting the ULCI using the set of time-frequency resources.

[0037]

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for configuring a UE to monitor both DLPI and ULCI.

[0038]

[0038] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, configuring the UE to monitor both DLPI and ULCI may include operations, features, means, or instructions for sending a first message that configures the UE to monitor DLPI and sending a second message that configures the UE to monitor ULCI. [Brief explanation of the drawings]

[0039] [Figure 1]

[0039] FIG. 1 illustrates an example of a wireless communication system that supports priority indication for downlink preemption and uplink cancellation according to aspects of the present disclosure. [Figure 2] FIG. 1 illustrates an example of a wireless communication system that supports priority indication for downlink preemption and uplink cancellation, according to aspects of the present disclosure. [Figure 3]

[0040] FIG. 10 illustrates an example process flow for supporting priority indication for downlink preemption, according to an aspect of the disclosure. [Figure 4] FIG. 10 illustrates an example process flow for supporting priority indication for downlink preemption, according to an aspect of the disclosure. [Figure 5]

[0041] 1 is a block diagram of a device that supports priority indication for downlink preemption and uplink cancellation, according to an aspect of the disclosure. [Figure 6] 1 is a block diagram of a device that supports priority indication for downlink preemption and uplink cancellation, according to an aspect of the disclosure. [Figure 7]

[0042] 1 is a block diagram of a preemption manager that supports priority indication for downlink preemption and uplink cancellation, according to an aspect of the disclosure. [Figure 8]

[0043] FIG. 1 illustrates a diagram of a system including a device that supports priority indication for downlink preemption and uplink cancellation, according to an aspect of the disclosure. [Figure 9]

[0044] 1 is a block diagram of a device that supports priority indication for downlink preemption and uplink cancellation, according to an aspect of the disclosure. [Figure 10]1 is a block diagram of a device that supports priority indication for downlink preemption and uplink cancellation, according to an aspect of the disclosure. [Figure 11]

[0045] 1 is a block diagram of a preemption manager that supports priority indication for downlink preemption and uplink cancellation, according to an aspect of the disclosure. [Figure 12]

[0046] FIG. 1 illustrates a diagram of a system including a device that supports priority indication for downlink preemption and uplink cancellation, according to an aspect of the disclosure. [Figure 13]

[0047] 10 is a flowchart illustrating a method for supporting priority indication for downlink preemption and uplink cancellation, according to an aspect of the present disclosure. [Figure 14] 10 is a flowchart illustrating a method for supporting priority indication for downlink preemption and uplink cancellation, according to an aspect of the present disclosure. [Figure 15] 10 is a flowchart illustrating a method for supporting priority indication for downlink preemption and uplink cancellation, according to an aspect of the present disclosure. [Figure 16] 10 is a flowchart illustrating a method for supporting priority indication for downlink preemption and uplink cancellation, according to an aspect of the present disclosure. [Figure 17] 10 is a flowchart illustrating a method for supporting priority indication for downlink preemption and uplink cancellation, according to an aspect of the present disclosure. [Figure 18] 10 is a flowchart illustrating a method for supporting priority indication for downlink preemption and uplink cancellation, according to an aspect of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0040]

[0048] In some wireless communication systems, a base station may multiplex transmissions to a group of one or more UEs using pre-allocated time-frequency resources. In some cases, a first UE in the group may be configured to communicate messages according to a given priority or may be associated with a different message type or channel type compared to a second UE in the group. For example, the first UE may transmit or receive ultra-reliable low latency communication (URLLC) messages, and the second UE may transmit or receive enhanced mobile broadband (eMBB) messages. In some cases, the second UE may be scheduled to use time-frequency resources that may also be scheduled (e.g., later) for higher priority traffic. In such cases, the base station may transmit control information (e.g., downlink control information (DCI)) indicating time-frequency resources that may be preempted (e.g., in the case of the downlink) or canceled (e.g., in the case of the uplink) by the second UE.

[0041]

[0049] Control information may be transmitted by a base station using a group common control channel (e.g., a group common physical downlink control channel (GC-PDCCH)). For example, the base station may use a sequence of bits in a DCI message, sometimes referred to as a preemption indication (e.g., a downlink preemption indication (DLPI) or an uplink cancellation indication (ULCI)), to indicate time-frequency resources to be preempted or canceled. If a first UE, a second UE, or both have a channel (e.g., a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), or other signaling such as a sounding reference signal (SRS)) scheduled over resources that overlap with resources indicated by the preemption indication, the UE may determine that the overlapping portion is to be preempted or canceled.

[0042]

[0050] In some cases, an uplink or downlink channel may be associated with a given priority level. For example, a channel may have a high priority level (e.g., relative to one or more lower priority level channels) or a low priority level (e.g., relative to one or more higher priority level channels). In some other examples, a channel may be associated with one of three or more different priorities (e.g., high, medium, or low priority). A UE may receive a preemption indication and preempt or cancel the indicated resources regardless of the operating conditions at the UE (e.g., regardless of whether the UE operates according to the URLLC standard or the eMBB standard). That is, the UE may apply the preemption indication to data regardless of the priority or channel type. In some cases, canceling or preempting a channel without considering the priority may cause unnecessary cancellation or preemption, which may result in latency and inefficiency in the system (e.g., due to the granularity of the preemption indication).

[0043]

[0051] Thus, the techniques described herein may enable a base station to configure (e.g., semi-statically or dynamically) UE behavior to apply preemption or cancellation indications to channels based on priority. For example, a base station may indicate an operational state to one or more UEs in a configuration message. The base station may indicate an operational state to one or more UEs using parameters in radio resource control (RRC) signaling, system information block (SIB) transmission, or any other signaling. The operational state may correspond to or indicate how the UE will apply preemption or cancellation indications to a set of time-frequency resources scheduled for a channel based on the priority of the channel.

[0044]

[0052] For example, in a first operation state, the UE may apply a preemption or cancellation indication to scheduled time-frequency resources regardless of the priority of the channel. In some cases, a UE operating in the first operation state may determine to preempt or cancel time-frequency resources scheduled for a high-priority channel, such as a URLLC channel, or a low-priority channel, such as an eMBB channel (e.g., regardless of the priority of the channel). The priority of a channel associated with the first UE may be relative to other channels associated with transmissions for other UEs. In some other examples, the base station may indicate a second operation state. In the second operation state, the UE may apply a preemption or cancellation indication to time-frequency resources of a low-priority channel (e.g., an eMBB channel) while maintaining scheduled communication in time-frequency resources for a high-priority channel (e.g., a URLLC channel).

[0045]

[0053] In some cases, if the UE is configured to monitor two or more preemption indications (e.g., both DLPI and ULCI), the base station may configure parameters indicating operational states for DLPI messages and ULCI messages separately. In some other cases, the base station may configure parameters for DLPI messages and ULCI messages together. Additionally or alternatively, a preemption indication may indicate resource preemption or cancellation on different carriers. In some examples, the base station may configure parameters indicating operational states for different carriers separately. In some other examples, the base station may configure parameters indicating operational states for different carriers together (e.g., by grouping configurations for different carriers in a single message). In such cases, if the preemption indication indicates resources of a first carrier, the preemption indication may apply to channels regardless of priority, and if the preemption indication indicates resources of a second carrier, some channels (e.g., low-priority channels or channels with priorities below a given priority threshold) may be preempted or canceled.

[0046]

[0054] Aspects of the present disclosure are initially described in the context of a wireless communication system. Additional aspects of the present disclosure are described with reference to process flows. Aspects of the present disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts relating to priority indication for downlink preemption and uplink cancellation.

[0047]

[0055] 1 illustrates an example of a wireless communication system 100 supporting priority indication for downlink preemption and uplink cancellation in accordance with aspects of the present disclosure. 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 using low-cost and low-complexity devices, or any combination thereof.

[0048]

[0056] The base stations 105 may be dispersed throughout a geographic area to form the wireless communication system 100 and may be devices of different forms or with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals according to one or more radio access technologies.

[0049]

[0057] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be fixed, mobile, or both at different times. The UEs 115 may be devices of different forms or with different capabilities. Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), as shown in FIG. 1.

[0050]

[0058] The base stations 105 may communicate with the core network 130, with each other, or both. For example, the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface). The base stations 105 may communicate with each other over the backhaul links 120 (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0051]

[0059] One or more of the base stations 105 described herein may include or be referred to by those skilled in the art as a base transceiver station, radio base station, access point, radio transceiver, Node B, eNode B (eNB), Next Generation Node B or GigaNode B (any of which may be referred to as gNB), Home Node B, Home eNode B, or other suitable terminology.

[0052]

[0060] The UE 115 may include or be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where a “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. The UE 115 may also include or 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, the UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine-type communication (MTC) device, among other examples, which may be implemented in various objects, such as an appliance, a vehicle, a meter, or the like, among other examples.

[0053]

[0061] The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may act as relays at times, as shown in FIG. 1, as well as base stations 105 and network equipment, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples.

[0054]

[0062] The UE 115 and the base station 105 may wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, the carrier used for the communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP)) that may be operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling that coordinates the operation of the carrier, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0055]

[0063] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition or control signaling that coordinates operation for other carriers. Carriers may be associated with frequency channels (e.g., Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Numbers (EARFCNs)) and may be arranged according to a channel raster for discovery by UE 115. A carrier may be operated in a standalone mode, where initial acquisition and connection may be made by UE 115 via the carrier, or a carrier may be operated in a non-standalone mode, where a connection may be established using a different carrier (e.g., of the same or different radio access technology).

[0056]

[0064] The communication links 125 shown in the wireless communication system 100 may include uplink transmissions from the UE 115 to the base station 105 or downlink transmissions 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 downlink and uplink communications (e.g., in TDD mode).

[0057]

[0065] A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)) for a carrier of a particular radio access technology. The devices of the wireless communication system 100 (e.g., the base station 105, the UE 115, or both) may have a hardware configuration that supports communication over a particular carrier bandwidth or may be configurable to support communication over 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 over a portion (e.g., a sub-band, BWP) or all of the carrier bandwidth.

[0058]

[0066] A signal waveform transmitted on a carrier may be composed of multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing an MCM technique, a resource element may consist of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and the subcarrier spacing have an inverse relationship. 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). Thus, the more resource elements and the higher the order of the modulation scheme received by the UE 115, the higher the data rate for the UE 115 may be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communications with the UE 115.

[0059]

[0067] One or more numerologies may be supported for a carrier, where the numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communication for the UE 115 may be limited to one or more active BWPs.

[0060]

[0068] The time interval for the base station 105 or the UE 115 may be, for example, T s =1 / (Δf max N f ) seconds, where Δf max may represent the maximum supported subcarrier spacing, and N fmay represent the maximum supported discrete Fourier transform (DFT) size. The communication resource time intervals may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0061]

[0069] Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into several slots. Additionally or alternatively, each frame may include a variable number of slots, and the number of slots may depend on the subcarrier spacing. Each slot may include several symbol periods (e.g., depending on the length of a cyclic prefix prepended to each symbol period). In some wireless communications systems 100, a slot may be further divided into multiple minislots containing one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the frequency operating band.

[0062]

[0070] A subframe, slot, minislot, 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)).

[0063]

[0071] Physical channels may be multiplexed on carriers according to various techniques. Physical control channels and physical data channels may be multiplexed on downlink carriers using, for example, 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)) for a physical control channel may be defined by several symbol periods and may span the system bandwidth of the carrier or a subset of the system bandwidth. One or more control regions (e.g., CORESET) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates at one or more aggregation levels configured in a cascaded manner. The aggregation level for the control channel candidates may refer to several control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for sending control information to multiple UEs 115 and a UE-specific search space set for sending control information to a specific UE 115.

[0064]

[0072] 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 for communication 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) to distinguish neighboring cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion (e.g., a sector) of a geographic coverage area 110 in which the 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 outer space between or overlapping with the geographic coverage area 110, among other examples.

[0065]

[0073] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 115 with a service subscription with the network provider that supports the macro cell. Small cells may be associated with lower-power base stations 105 compared to macro cells, and the small cells may operate in the same or different (e.g., licensed, unlicensed) frequency bands as the macro cell. A small cell may provide unrestricted access to UEs 115 with a service subscription with the network provider, or may provide restricted access to UEs 115 that have an association with the small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users at home or in the office). A base station 105 may support one or more cells and may also support communication on one or more cells using one or more component carriers.

[0066]

[0074] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, Narrowband IoT (NB-IoT), eMBB) that may provide access to different types of devices.

[0067]

[0075] In some examples, the base stations 105 are mobile and may therefore provide communication coverage to moving geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In some 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 a heterogeneous network in which different types of base stations 105 provide coverage to various geographic coverage areas 110, for example, using the same or different radio access technologies.

[0068]

[0076] The wireless communications 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 transmissions from different base stations 105 may, in some examples, not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operation.

[0069]

[0077] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technologies that enable devices to communicate with each other or with the base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that incorporate sensors or meters to measure or capture information and relay such information to a central server or application program that utilizes the information or presents the information to a human interacting with the application program. Some UEs 115 may be designed to collect information or enable automated 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 detection, physical access control, and transaction-based business billing.

[0070]

[0078] Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception rather than simultaneous transmission and reception). In some examples, half-duplex communication may be implemented at a reduced peak rate. Other power-saving techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communication, operating on a limited bandwidth (e.g., pursuant to narrowband communication), or a combination of these techniques. For example, some UEs 115 may be configured for operation using a narrowband protocol type 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 the carrier, or outside of the carrier.

[0071]

[0079] The wireless communication system 100 may be configured to support ultra-reliable or low-latency communications, or various combinations thereof. For example, the wireless communication system 100 may be configured to support URLLC or mission-critical communications. The UE 115 may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission-critical functions). Ultra-reliable communications may include private or group communications and may 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 may include service prioritization, and the mission-critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency may be used interchangeably herein.

[0072]

[0080] In some examples, the UE 115 may also be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105 or otherwise unable to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to every other UE 115 in the group. In some examples, the base station 105 facilitates scheduling of resources for D2D communication. In some other cases, D2D communication occurs between UEs 115 without the involvement of the base station 105.

[0073]

[0081] In some systems, the D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UE 115). In some examples, vehicles may communicate using vehicle-to-anything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination thereof. Vehicles may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or a network via one or more network nodes (e.g., base stations 105) using vehicle-to-network (V2N) communication, or both.

[0074]

[0082] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an Evolved Packet Core (EPC) or 5G Core (5GC) that may include at least one control plane entity (e.g., a Mobility Management Entity (MME), an Access and Mobility Management Function (AMF)) that manages access and mobility and at least one user plane entity (e.g., a Serving Gateway (S-GW), a Packet Data Network (PDN) Gateway (P-GW), or a User Plane Function (UPF)) that routes packets or interconnections to external networks. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management, for the UEs 115 served by the base stations 105 associated with the core network 130. User IP packets may be forwarded through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the network operator IP services 150. Operator IP services 150 may include access to the Internet, intranet(s), IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0075]

[0083] Some of the network devices, such as the base station 105, may include sub-components, such as an access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with the UE 115 through one or more other access network transmitting entities 145, which may be referred to as a radio head, a smart radio head, or a transmit / receive point (TRP). Each access network transmitting entity 145 may include one or more antenna panels. In some configurations, various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or integrated into a single network device (e.g., the base station 105).

[0076]

[0084] The wireless communication system 100 may typically operate using one or more frequency bands in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the 300 MHz to 3 GHz region is known as the ultra-high frequency (UHF) region or decimeter band because wavelengths range from approximately 1 decimeter to 1 meter in length. Although UHF waves may be blocked or redirected by buildings and environmental features, the waves may penetrate structures sufficiently for a macrocell to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using the smaller frequencies and longer waves in the short wave (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0077]

[0085] The wireless communication system 100 may operate in the microwave (SHF) region, using the frequency band from 3 GHz to 30 GHz, also known as the centimeter band, or the millimeter-wave (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as the millimeter 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 on each device 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, propagation of EHF transmissions may be subject to greater atmospheric attenuation and shorter distances than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of bands across these frequency regions may vary by country or regulatory body.

[0078]

[0086] The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may employ License Assisted Access (LAA), LTE-Unlicensed (LTE-U), 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 the base station 105 and the UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation in the unlicensed band may be based on a carrier aggregation configuration with component carriers operating in a licensed band (e.g., LAA). Operation in the unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0079]

[0087] The base station 105 or the UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or the UE 115 may be located in one or more antenna arrays or antenna panels that can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located in an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with the base station 105 may be located in various geographic locations. The base station 105 may have an antenna array with several rows and columns of antenna ports that the base station 105 can use to support beamforming of communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted through the antenna ports.

[0080]

[0088] The base station 105 or UE 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques are sometimes referred to as spatial multiplexing. Multiple signals may be transmitted by a transmitting device via different antennas or different combinations of antennas, for example. Similarly, multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0081]

[0089] Beamforming, sometimes referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting or receiving device (e.g., base station 105, UE 115) to shape or steer an antenna beam (e.g., transmit beam, receive beam) along a spatial path between the transmitting and receiving devices. Beamforming may be achieved by combining signals communicated via antenna elements of an antenna array such that some signals propagating in a particular orientation relative to the antenna array experience constructive interference and others experience destructive interference. Adjusting signals communicated via antenna elements may include the transmitting or 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 of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., relative to the antenna array of the transmitting or receiving device or to some other orientation).

[0082]

[0090] In some examples, transmission by a device (e.g., by the base station 105 or the UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a composite beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, where the feedback may correspond to a configured number of beams across the 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 ampliconed. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques have been described with respect to signals transmitted in one or more directions by the base station 105, the UE 115 may employ similar techniques to transmit a signal multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by the UE 115) or to transmit a signal in a single direction (e.g., to transmit data to a receiving device).

[0083]

[0091] The wireless communication system 100 may be a packet-based network operating according to a layered protocol stack. In the user plane, communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. The Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate on logical channels. The Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may also use error detection, error correction, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the RRC protocol layer may establish, configure, and maintain RRC connections between the UE 115 and the base station 105 or core network 130, which support radio bearers for user plane data. In the physical layer, transport channels may be mapped to physical channels.

[0084]

[0092] The UE 115 and the base station 105 may support retransmission of data to increase the likelihood that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is accurately received over the communication link 125. HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions). In some examples, a device may support same-slot HARQ feedback, where the device may provide HARQ feedback in a particular slot for data received in a previous symbol in that slot. In some other cases, the device may provide HARQ feedback in a subsequent slot or according to some other time interval.

[0085]

[0093] The wireless communication system 100 may support configuration of the UE 115 by the base station 105. For example, the base station 105 may configure the UE 115 in an operation state related to a preemption indication (e.g., DLPI) or a cancellation indication (e.g., ULCI, sometimes referred to as an uplink preemption indication (ULPI)). In a first operation state, the UE 115 may perform preemption or cancellation of communications scheduled on time-frequency resources on a channel regardless of the priority of the channel. In a second operation state, the UE 115 may perform preemption or cancellation of communications scheduled on time-frequency resources on a channel based on the priority of the channel. For example, the UE 115 may preempt or cancel communications scheduled over resources indicated by a preemption indication for a lower priority channel relative to another channel or relative to a priority threshold. The UE 115 may communicate with the base station 105 using the remaining time-frequency resources (e.g., the time-frequency resources that were not preempted or canceled). Thus, the UE 115 may avoid unnecessary preemption or cancellation, which may improve efficiency and reduce latency in the wireless communication system 100.

[0086]

[0094] 2 illustrates an example of a wireless communication system 200 supporting priority indications for downlink preemption and uplink cancellation in accordance with aspects of the present disclosure. In some examples, the wireless communication system 200 may implement aspects of the wireless communication system 100 and may include a UE 115-a, a UE 115-b, a base station 105-a, and a communication link 125-a, which may be examples of the UE 115, the base station 105, and the communication link 125 described with reference to FIG. 1. As described herein, the base station 105-a may configure one or more of the UE 115-a and the UE 115-b with priority indications for downlink preemption and uplink cancellation to reduce signaling overhead associated with low-granularity preemption indications (e.g., DLPI or ULCI).

[0087]

[0095] In some examples, the base station 105 may communicate with one or more UEs 115 via the communication link 125. For example, the base station 105-a may communicate with the UEs 115-a and 115-b using a group common control channel (e.g., GC-PDCCH) via the communication link 125-a. In some cases, the UEs 115 may support different priorities for communication, different channel types, or different communication types than the other UEs 115. For example, the UE 115-a may support low-latency communication such as URLLC, while the UE 115-b may support standard communication such as eMBB or other communication with higher latency compared to URLLC. Transmissions to the UEs 115-a and 115-b may be multiplexed using time-frequency resources allocated by the base station 105-a. In some cases, the UE 115-b may be scheduled to use a set of time-frequency resources that may also be allocated for higher priority (e.g., more urgent) URLLC traffic for the UE 115-a. Accordingly, the base station 105-a may transmit control information (e.g., DCI) indicating time-frequency resources that may be preempted or canceled by the UE 115-b. For example, the base station 105-a may include a sequence of bits (e.g., a 14-bit sequence) within a DCI payload (e.g., in a PDCCH or GC-PDCCH) to indicate time-frequency resources that may be preempted or canceled at the UE 115-b to enable transmission of higher priority traffic for the UE 115-a.

[0088]

[0096] In some cases, the base station 105-a may indicate time-frequency resources to be preempted by the UE 115-a, the UE 115-b, or both. This indication may be a sequence of bits in a DCI message, such as a DLPI. The base station 105-a may send the DLPI using the GC-PDCCH. If either the UE 115-a, the UE 115-b, or both receives a grant to schedule a PDSCH that overlaps with the resource indicated by the DLPI, the UE 115-a, the UE 115-b, or both may decide to preempt the overlapping time-frequency resources (e.g., by refraining from monitoring the preempted resources for the PDSCH). In some cases, the UE 115-a or the UE 115-b may use this information to set a log-likelihood ratio (LLR) associated with bits sent on the indicated time-frequency resources to 0, which may improve the decoding probability (e.g., the PDSCH decoding probability).

[0089]

[0097] In some other cases, the base station 105-a may indicate time-frequency resources to be canceled by the UE 115-a, the UE 115-b, or both. This indication may be a sequence of bits in a DCI message, such as an ULCI or ULPI. The base station 105-a may send the ULCI using a group-common PDCCH. If either the UE 115-a, the UE 115-b, or both, is scheduled to transmit an uplink message (e.g., a PUSCH or SRS) using resources that overlap with the resources indicated by the ULCI, the UE 115-a, the UE 115-b, or both, may decide to cancel transmission of the uplink message on the overlapping portion.

[0090]

[0098] In some examples, an uplink channel or a downlink channel may have an associated priority level. For example, an uplink channel, such as a dynamically granted PUSCH, may have a priority indicated in the DCI scheduling the PUSCH (e.g., by a one-bit indicator where “1” indicates high priority and “0” or no value indicates low priority). Additionally or alternatively, a physical uplink control channel (PUCCH) HARQ acknowledgment (ACK) priority may be implicitly indicated in the DCI scheduling the PUSCH or PDSCH. For example, the base station 105-a may configure the UE 115 with several codebooks (e.g., two HARQ-ACK codebooks for each UE 115). Each codebook may be configured with a priority level, which may also be the priority of the PUCCH used for HARQ-ACK for the uplink or downlink channel. The DCI scheduling the PUSCH or PDSCH may indicate to the UE 115 which codebook to use for HARQ-ACK feedback.

[0091]

[0099] In some other examples, uplink channels, such as configured grant PUSCHs or scheduling requests, may have priorities indicated via RRC signaling (e.g., an RRC-configured priority associated with each configured PUSCH transmission or each scheduling request resource). Some transmissions may be designated as or default to low priority (e.g., periodic channel state information (CSI), semi-persistent CSI, periodic SRS, or semi-periodic SRS).

[0092]

[0100] In some cases, the UE 115 may receive a DLPI or ULCI and preempt or cancel the indicated resources regardless of the operating state at the UE 115 (e.g., regardless of whether the UE 115 is scheduled for or supports a given priority, such as URLLC or eMBB standards). That is, the UE 115 may apply the DLPI or ULCI to data regardless of channel priority or regardless of which channel the base station 105 intended to preempt or cancel. In some cases, canceling or preempting channels without considering priority may cause unnecessary cancellations or preemptions, which may result in increased latency and inefficiencies in the system (e.g., due to the granularity of the preemption indication).

[0093]

[0101] In some examples, the base station 105 may semi-statically or dynamically configure the behavior of the UE 115 to apply DLPI or ULCI to the channel based on priority. For example, the base station 105-a may indicate an operational state to the UE 115-a in a configuration message 205-a and an operational state to the UE 115-b in a configuration message 205-b over communication link 125-b. Additionally or alternatively, the base station 105-a may send a single configuration message 205 for the UE 115-a and the UE 115-b over communication link 125-b indicating one or more operational states for the UE 115-a and the UE 115-b. The base station 105-a may indicate the operational state to the UE 115 using parameters in RRC signaling, SIB transmission, or any other information signaling performed by the base station 105-a.

[0094]

[0102] The operating state may correspond to how the UE 115 applies DLPI or ULCI to time-frequency resources scheduled for a channel based on the priority of the channel. For example, in a first operating state, the UE 115 may apply DLPI or ULCI to the scheduled time-frequency resources regardless of the priority of the channel. In some cases, the base station 105-a may indicate the first operating state to the UE 115-a in a configuration message 205-a. The UE 115-a may then receive a DLPI indicating the time-frequency resources for the channel to be preempted. In the first operating state, the UE 115-a may decide to preempt the time-frequency resources scheduled for a high-priority channel 215-a, such as a URLLC channel, or a low-priority channel 215-b, such as an eMBB channel (e.g., regardless of the priority of the channel).

[0095]

[0103] Additionally or alternatively, the UE 115-a may receive a ULCI indicating the time-frequency resources scheduled for the channel to be canceled. In a first operating state, the UE 115-a may determine to cancel the time-frequency resources for the high-priority channel 215-a or the low-priority channel 215-b. In some cases, the base station 105 may indicate the first operating state to the UE 115 if the high-priority channel for the UE 115 is of relatively low priority when compared to other UEs 115 that share the time-frequency resources (e.g., such that the time-frequency resources of the UE 115 may be preempted or canceled in favor of transmissions to or from the other UEs 115). That is, the priority of the channel associated with the first UE 115 may be relative to other channels associated with transmissions for the other UEs 115.

[0096]

[0104] In some cases, the base station 105 may indicate a second operating state to the UE 115. In the second operating state, the UE 115 may apply DLPI or ULCI to time-frequency resources for a low-priority channel (e.g., a low-priority channel 215-b, which may be an eMBB channel or other channel having a priority level below a given threshold) while maintaining scheduled communications in time-frequency resources for a high-priority channel (e.g., a high-priority channel 215-a, which may be a URLLC channel or other channel having a priority level above a given threshold). For example, the base station 105-a may indicate the second operating state to the UE 115-b in a configuration message 205-b. In the second operating state, the UE 115-b may decide to preempt the time-frequency resources scheduled for the low-priority channel 215-b and maintain the time-frequency resources scheduled for the high-priority channel 215-a. Additionally or alternatively, the UE 115-b may receive a ULCI indicating time-frequency resources to be canceled in the high-priority channel 215-a and the low-priority channel 215-b. In a second operating state, the UE 115-b may decide to cancel the time-frequency resources scheduled for the low-priority channel 215-b and maintain the time-frequency resources scheduled for the high-priority channel 215-a.

[0097]

[0105] In some cases, if the UE 115 is configured to monitor DLPI, ULCI, or both, the base station 105-a may separately configure parameters indicating operational states for DLPI messages and ULCI messages. In some other cases, the base station 105-a may jointly configure parameters for DLPI messages and ULCI messages. Additionally or alternatively, the DLPI and ULCI may indicate resource preemption or cancellation on different carriers. In some examples, the base station 105-a may separately configure parameters indicating operational states for different carriers. In some other examples, the base station 105-a may jointly configure parameters indicating operational states for different carriers (e.g., by grouping different carriers). In such cases, if the ULCI refers to resources on a first carrier, the ULCI may be applied to the channel regardless of priority, and if the ULCI refers to a second carrier, a low-priority channel may be canceled. Similarly, if the DLPI refers to resources on a first carrier, the DLPI may be applied to the channel regardless of priority, and if the DLPI refers to a second carrier, a low-priority channel may be preempted.

[0098]

[0106] In some examples, the PUCCH priority may not be used to indicate the PDSCH priority. In such examples, the base station 105 may configure one or more UEs 115 to apply the DLPI according to a first operating state. However, when the PUCCH priority is used to indicate the PDSCH (e.g., two priorities are involved), the base station 105 may configure one or more UEs 115 to apply the DLPI according to a second operating state.

[0099]

[0107] The techniques described herein may enable the base station 105 to configure the UE 115 in an operating state related to a preemption indication (e.g., DLPI or ULCI). In a first operating state, the UE 115 may perform preemption or cancellation of time-frequency resources regardless of relative channel priority. In a second operating state, the UE 115 may perform preemption or cancellation of time-frequency resources according to relative channel priority (e.g., preempt or cancel resources for the relatively lower priority channel 215-b). The UE 115 may communicate with the base station 105 using the remaining portion of the time-frequency resources (e.g., time-frequency resources that were not preempted or canceled). Thus, the UE 115 may avoid unnecessary preemption or cancellation, which may improve efficiency and reduce latency in the wireless communication system 200.

[0100]

[0108] 3 illustrates an example of a process flow 300 supporting priority indication for downlink preemption and uplink cancellation according to aspects of the present disclosure. In some examples, the process flow 300 may implement aspects of the wireless communication system 100 and the wireless communication system 200. The process flow 300 includes a UE 115-c and a base station 105-b, which may be examples of the UE 115 and the base station 105 described with reference to FIGS. 1 and 2, respectively. Alternative examples of the following may be implemented, with some processes being performed in a different order than described, or not being performed. In some cases, the process may include additional features not described below, or additional processes may be added.

[0101]

[0109] At 305, the base station 105-b may determine an operating state for the UE 115-c. In some cases, the operating state may correspond to how the UE 115-c applies a preemption indication (e.g., a DLPI) based on a priority of a channel associated with the preemption indication.

[0102]

[0110] At 310, the base station 105-b may send a configuration message to the UE 115-c. In some cases, the configuration message may include parameters that indicate an operating state to the UE 115-c.

[0103]

[0111] At 315, the base station 105-b may transmit a scheduling grant to the UE 115-c. The scheduling grant may indicate time-frequency resources scheduled for a channel (e.g., a downlink channel such as a PDSCH). The channel may be associated with a given priority.

[0104]

[0112] The UE 115-c may identify the time-frequency resources scheduled for the channel and the priority associated with the channel at 320. The UE 115-c may identify the time-frequency resources scheduled for the channel based on the scheduled grant sent by the base station 105-b at 315.

[0105]

[0113] At 325, the base station 105-b may determine a set of time-frequency resources scheduled for the UE 115-c that may be preempted. For example, the base station 105-b may determine resources of the set of time-frequency resources scheduled for the UE 115-c or other resources that do not overlap with the set of time-frequency resources scheduled for the UE 115-c. The base station 105-b may determine the resources to be preempted based on transmissions scheduled for the UE 115-c or other UEs 115.

[0106]

[0114] At 330, the base station 105-b may transmit a DLPI to the UE 115-c, which may indicate the set of preempted resources or some preempted resources as determined at 325. For example, the base station 105-b may transmit the DLPI using a sequence of bits (e.g., 14 bits) in a DCI message. The UE 115-c may then receive a group common control channel (e.g., GC-PDCCH) carrying the DCI. The DCI may be intended for a group of UEs 115 that includes the UE 115-c.

[0107]

[0115] In some cases, the base station 105-b may send a message indicating a set of time-frequency resources for the DLPI and may transmit the DLPI to the UE 115-c using the time-frequency resources. The UE 115-c may monitor the set of time-frequency resources and receive the DLPI based on the monitoring.

[0108]

[0116] At 335, the UE 115-c may determine time-frequency resources to be preempted, which may be indicated by the DLPI. The preempted time-frequency resources may not overlap with the set of remaining time-frequency resources (e.g., after the DLPI is applied). Additionally or alternatively, the UE 115-c may determine several channels, including the channels identified from 315, to which the UE 115-c may apply the DLPI based on the operating state. In some cases, the several channels may include two or more channels with different priorities (e.g., a relatively high priority and a relatively low priority).

[0109]

[0117] Thereafter, and optionally, at 340 and 345, the base station 105-b may refrain from transmitting using the preempted time-frequency resources, and the UE 115-c may refrain from monitoring the preempted time-frequency resources according to the first operating state. For example, when the operating state is the first operating state, the UE 115-c may apply DLPI to the channels regardless of the priority of the channels.

[0110]

[0118] Additionally or alternatively, and optionally at 350, the base station 105-b may determine a set of preempted time-frequency resources for a second channel associated with a second priority that do not overlap with the remaining time-frequency resources. The second priority may differ from the channel priority at 340 and 345. The base station 105-b may transmit using the preempted time-frequency resources. Optionally at 355, the UE 115-c may monitor the preempted time-frequency resources according to a second operating state. For example, when the operating state is the second operating state, the UE 115-c may apply a DLPI to the second channel based on the second priority (e.g., the UE 115-c may apply a DLPI to a relatively lower priority channel and refrain from applying a DLPI to a relatively higher priority channel). In some cases, the channels may be associated with different component carriers. For example, the channel may be associated with a first component carrier, and the second channel may be associated with a second component carrier different from the first component carrier.

[0111]

[0119] At 360 and 365, the base station 105-b and the UE 115-c may determine the remaining time-frequency resources based on the DLPI and the channel priority (e.g., after the DLPI is applied according to the operating state).

[0112]

[0120] At 370, the base station 105-b and the UE 115-c may communicate using the remaining portion of the time frequency resources (eg, on a channel such as a PDSCH).

[0113]

[0121] 4 illustrates an example of a process flow 400 supporting priority indication for downlink preemption and uplink cancellation according to aspects of the present disclosure. In some examples, the process flow 400 may implement aspects of the wireless communication system 100 and the wireless communication system 200. The process flow 400 includes a UE 115-d and a base station 105-c, which may be examples of the UE 115 and the base station 105 described with reference to FIGS. 1 and 2, respectively. Alternative examples of the following may be implemented, with some processes being performed in a different order than described, or not being performed. In some cases, the process may include additional features not described below, or additional processes may be added.

[0114]

[0122] At 405, the base station 105-c may determine an operating state for the UE 115-d. In some cases, the operating state may correspond to how the UE 115-d applies a preemption indication (e.g., an ULCI) based on the priority of a channel associated with the preemption indication.

[0115]

[0123] At 410, the base station 105-c may send a configuration message to the UE 115-d. In some cases, the configuration message may include parameters that indicate an operating state to the UE 115-d.

[0116]

[0124] At 415, the base station 105-c may transmit a scheduling grant to the UE 115-d. The scheduling grant may indicate time-frequency resources scheduled for a channel (e.g., an uplink channel such as a PUSCH). The channel may be associated with a given priority.

[0117]

[0125] At 420, the UE 115-d may identify the time-frequency resources scheduled for the channel and a priority associated with the channel. The UE 115-d may identify the time-frequency resources scheduled for the channel based on the scheduled grant sent by the base station 105-c at 315.

[0118]

[0126] At 425, the base station 105-c may determine some time-frequency resources scheduled for the UE 115-d that may be canceled. For example, the base station 105-c may determine resources of the set of time-frequency resources scheduled for the UE 115-d or other resources that do not overlap with the set of time-frequency resources scheduled for the UE 115-d. The base station 105-c may determine the resources to be preempted based on transmissions scheduled for the UE 115-d or other UEs 115.

[0119]

[0127] At 430, the base station 105-c may transmit an ULCI to the UE 115-d, which may indicate the set of canceled resources or some of the canceled resources as determined at 425. For example, the base station 105-c may transmit the ULCI using a sequence of bits (e.g., 14 bits) in a DCI message. The UE 115-d may then receive a group common control channel (e.g., a PDCCH) carrying the DCI. The DCI may be intended for a group of UEs 115 that includes the UE 115-d.

[0120]

[0128] In some cases, the base station 105-c may send a message indicating a set of time-frequency resources for the ULCI and may then transmit the ULCI to the UE 115-d using the time-frequency resources. The UE 115-d may monitor the set of time-frequency resources and receive the ULCI based on the monitoring.

[0121]

[0129] At 435, the UE 115-d may determine time-frequency resources to be canceled, which may be indicated by the ULCI. The canceled time-frequency resources may not overlap with the set of remaining time-frequency resources (e.g., after the ULCI is applied). Additionally or alternatively, the UE 115-d may determine several channels, including the channels identified from 415, to which the UE 115-d may apply the ULCI based on the operating state. In some cases, the several channels may include two or more channels with different priorities (e.g., a relatively high priority and a relatively low priority).

[0122]

[0130] Thereafter, and optionally at 440 and 445, the base station 105-c may refrain from monitoring the canceled time-frequency resources, and the UE 115-d may refrain from transmitting using the canceled time-frequency resources according to the first operating state. For example, when the operating state is the first operating state, the UE 115-d may apply ULCI to the channels regardless of the priority of the channels.

[0123]

[0131] Additionally or alternatively, and optionally at 450, the base station 105-c may determine a set of canceled time-frequency resources for a second channel associated with a second priority that do not overlap with the remaining time-frequency resources. The second priority may be different from the channel priority at 440 and 445. The base station 105-c may monitor the canceled time-frequency resources according to a second operating state.

[0124]

[0132] Optionally, at 455, the UE 115-d may transmit an uplink message using the canceled time-frequency resource based on the operating state and the second priority. For example, when the operating state is the second operating state, the UE 115-d may apply ULCI to the second channel based on the second priority (e.g., the UE 115-d may apply ULCI to a relatively lower priority channel and refrain from applying ULCI to a relatively higher priority channel). In some cases, the channels may be associated with different component carriers. For example, the channel may be associated with a first component carrier, and the second channel may be associated with a second component carrier different from the first component carrier.

[0125]

[0133] At 460 and 465, the base station 105-c and the UE 115-d may determine remaining time-frequency resources based on the ULCI and the channel priority (e.g., after the ULCI is applied according to the operating state). At 470, the base station 105-c and the UE 115-d may communicate using the remaining portion of the time-frequency resources (e.g., on a channel such as a PUSCH).

[0126]

[0134] 5 shows a block diagram 500 of a device 505 that supports priority indication for downlink preemption and uplink cancellation according to an aspect of the disclosure. The device 505 may be an example of an aspect of a UE 115 described herein. The device 505 may include a receiver 510, a preemption manager 515, and a transmitter 520. The device 505 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0127]

[0135] The receiver 510 may receive information such as packets, user data, or control information associated with various information channels (e.g., information related to control channels, data channels, and priority indications for downlink preemption and uplink cancellation, etc.). The information may be passed to other components of the device 505. The receiver 510 may be an example of an aspect of the transceiver 820 described with reference to FIG. 8. The receiver 510 may utilize a single antenna or a set of antennas.

[0128]

[0136] The preemption manager 515 may receive a configuration message from a base station including parameters indicating an operation state by the UE to apply the preemption indication based on a priority of a channel associated with the preemption indication (e.g., a DLPI or ULCI), identify a priority of the channel and time-frequency resources scheduled for the channel, receive an instance of the preemption indication, determine a remaining portion of the identified time-frequency resources based on the received instance of the preemption indication and the identified priority of the channel, and communicate with the base station using the remaining portion of the time-frequency resources. The preemption manager 515 may be an example of an aspect of the preemption manager 810 described herein.

[0129]

[0137] Preemption manager 515, or subcomponents thereof, may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of preemption manager 515, or subcomponents thereof, may be performed by a general-purpose processor, a digital signaling processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in this disclosure.

[0130]

[0138] The preemption manager 515, or subcomponents thereof, may be physically located in various locations, including being distributed such that portions of the functionality are implemented at different physical locations by one or more physical components. In some examples, the preemption manager 515, or subcomponents thereof, may be separate and distinct components according to various aspects of the present disclosure. In some examples, the preemption manager 515, or subcomponents thereof, may be combined with one or more other hardware components, including, but not limited to, an input / output (I / O) component, a transceiver, a network server, another computing device, one or more other components described in this disclosure, or a combination thereof, according to various aspects of the present disclosure.

[0131]

[0139] The transmitter 520 may transmit signals generated by other components of the device 505. In some examples, the transmitter 520 may be co-located with the receiver 510 in a transceiver module. For example, the transmitter 520 may be an example of an aspect of the transceiver 820 described with reference to FIG. 8. The transmitter 520 may utilize a single antenna or a set of antennas.

[0132]

[0140] 6 shows a block diagram 600 of a device 605 that supports priority indication for downlink preemption and uplink cancellation according to an aspect of the disclosure. The device 605 may be an example of an aspect of the device 505 or UE 115 described herein. The device 605 may include a receiver 610, a preemption manager 615, and a transmitter 645. The device 605 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0133]

[0141] The receiver 610 may receive information such as packets, user data, or control information associated with various information channels (e.g., information related to control channels, data channels, and priority indications for downlink preemption and uplink cancellation, etc.). The information may be passed to other components of the device 605. The receiver 610 may be an example of an aspect of the transceiver 820 described with reference to FIG. 8. The receiver 610 may utilize a single antenna or a set of antennas.

[0134]

[0142] Preemption manager 615 may be an example of an aspect of preemption manager 515 described herein. Preemption manager 615 may include an operational state component 620, a channel manager 625, a preemption indication component 630, a resource component 635, and a communication component 640. Preemption manager 615 may be an example of an aspect of preemption manager 810 described herein.

[0135]

[0143] The operational state component 620 may receive a configuration message from the base station that includes parameters indicating an operational state by the UE for applying a preemption indication based on the priority of the channel associated with the preemption indication (e.g., DLPI or ULCI).

[0136]

[0144] The channel manager 625 may identify a priority of the channel and the time-frequency resources scheduled for the channel. The preemption indication component 630 may receive an instance of a preemption indication. The resource component 635 may determine a remaining portion of the identified time-frequency resources based on the received instance of the preemption indication and the identified priority of the channel. The communication component 640 may communicate with the base station using the remaining portion of the time-frequency resources.

[0137]

[0145] The transmitter 645 may transmit signals generated by other components of the device 605. In some examples, the transmitter 645 may be co-located with the receiver 610 in a transceiver module. For example, the transmitter 645 may be an example of an aspect of the transceiver 820 described with reference to FIG. 8. The transmitter 645 may utilize a single antenna or a set of antennas.

[0138]

[0146] 7 shows a block diagram 700 of a preemption manager 705 supporting priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The preemption manager 705 may be an example of an aspect of the preemption manager 515, the preemption manager 615, or the preemption manager 810 described herein. The preemption manager 705 may include an operational state component 710, a channel manager 715, a preemption indication component 720, a resource component 725, a communication component 730, a monitoring component 735, a message receiver 740, a transmission component 745, and a configuration component 750. Each of these modules may communicate with one another directly or indirectly (e.g., via one or more buses).

[0139]

[0147] The operational state component 710 may receive a configuration message from the base station that includes parameters indicating an operational state by the UE for applying a preemption indication based on the priority of the channel associated with the preemption indication (e.g., DLPI or ULCI).

[0140]

[0148] The channel manager 715 may identify a priority of the channel and the time-frequency resources scheduled for the channel. In some examples, the channel manager 715 may determine a set of time-frequency resources scheduled for a second channel associated with a second priority different from the priority of the channel, where the set of time-frequency resources does not overlap with the remainder of the time-frequency resources. In some cases, the second channel may be associated with a different carrier than the channel.

[0141]

[0149] In some examples, the channel manager 715 may receive a message indicating a set of time-frequency resources for the ULCI. In some examples, the channel manager 715 may determine a set of channels including channels to which the UE may apply the preemption indication based on the operating state. In some cases, the set of channels includes at least two channels with different priorities.

[0142]

[0150] The preemption indication component 720 may receive an instance of a preemption indication. In some cases, the preemption indication includes a DLPI. In some cases, the preemption indication includes a ULCI.

[0143]

[0151] The resource component 725 may determine a remaining portion of the identified time-frequency resources based on the received instance of the preemption indication and the identified priority of the channel. In some examples, the resource component 725 may determine a set of time-frequency resources of the identified time-frequency resources scheduled for the channel, where the set of time-frequency resources does not overlap with the remaining portion of the time-frequency resources.

[0144]

[0152] The communication component 730 may communicate with the base station using the remaining portion of the time-frequency resources. The monitoring component 735 may refrain from monitoring the set of time-frequency resources based on the DLPI.

[0145]

[0153] In some examples, the monitoring component 735 may monitor a set of time-frequency resources for the second channel based on an operating state and a DLPI associated with a priority. In some examples, the monitoring component 735 may monitor a set of time-frequency resources for the DLPI, where receiving an instance of a preemption indication is based on the monitoring. In some examples, the monitoring component 735 may monitor a set of time-frequency resources for the ULCI, where receiving an instance of a preemption indication is based on the monitoring.

[0146]

[0154] The message receiver 740 may receive a message indicating a set of time-frequency resources for DLPI. In some examples, the message receiver 740 may receive a first message configuring the UE to monitor DLPI. In some examples, the message receiver 740 may receive a second message configuring the UE to monitor ULCI. The transmitting component 745 may refrain from transmitting an uplink message using the set of time-frequency resources based on the ULCI.

[0147]

[0155] In some examples, the transmitting component 745 may transmit the second channel using a set of time-frequency resources based on the operating state and the ULCI associated with a priority. The configuring component 750 may configure the UE to monitor both the DLPI and the ULCI.

[0148]

[0156] 8 shows a diagram of a system 800 including a device 805 that supports priority indication for downlink preemption and uplink cancellation according to an aspect of the disclosure. The device 805 may be an example of or include components of the device 505, device 605, or UE 115 described herein. The device 805 may include components for two-way voice and data communication, including components for transmitting and receiving communications, including a preemption manager 810, an I / O controller 815, a transceiver 820, an antenna 825, a memory 830, and a processor 840. These components may be in electronic communication via one or more buses (e.g., bus 845).

[0149]

[0157] The preemption manager 810 may receive, from a base station, a configuration message including parameters indicating an operation state by the UE for applying a preemption indication based on a priority of a channel associated with the preemption indication (e.g., a DLPI or ULCI), identify the priority of the channel and time-frequency resources scheduled for the channel, receive an instance of the preemption indication, determine a remaining portion of the identified time-frequency resources based on the received instance of the preemption indication and the identified priority of the channel, and communicate with the base station using the remaining portion of the time-frequency resources.

[0150]

[0158] The I / O controller 815 may manage input and output signals for the device 805. The I / O controller 815 may also manage peripherals not built into the device 805. In some cases, the I / O controller 815 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 815 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. In some other cases, the I / O controller 815 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 815 may be implemented as part of the processor. In some cases, a user may interact with the device 805 through the I / O controller 815 or through hardware components controlled by the I / O controller 815.

[0151]

[0159] The transceiver 820 may communicate bidirectionally via one or more antennas, wired links, or wireless links as described herein. For example, the transceiver 820 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 820 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and for demodulating packets received from the antenna.

[0152]

[0160] In some cases, the device 805 may include a single antenna 825 or may have two or more antennas 825 that may be capable of concurrently transmitting or receiving multiple wireless transmissions.

[0153]

[0161] The memory 830 may include random access memory (RAM) and read-only memory (ROM). The memory 830 may store computer-readable, computer-executable code 835 that includes instructions that, when executed, cause the processor to perform various functions described herein. In some cases, the memory 830 may include a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0154]

[0162] The processor 840 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, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 840 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be incorporated into the processor 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks supporting priority indication for downlink preemption and uplink cancellation).

[0155]

[0163] The code 835 may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communication. The code 835 may be stored in a non-transitory computer-readable medium, such as system memory or other type of memory. In some cases, the code 835 may not be directly executable by the processor 840, but may (e.g., when compiled and executed) cause a computer to perform functions described herein.

[0156]

[0164] 9 shows a block diagram 900 of a device 905 that supports priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The device 905 may be an example of an aspect of a base station 105 described herein. The device 905 may include a receiver 910, a preemption manager 915, and a transmitter 920. The device 905 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0157]

[0165] The receiver 910 may receive information such as packets, user data, or control information associated with various information channels (e.g., information related to control channels, data channels, and priority indications for downlink preemption and uplink cancellation, etc.). The information may be passed to other components of the device 905. The receiver 910 may be an example of an aspect of the transceiver 1220 described with reference to FIG. 12. The receiver 910 may utilize a single antenna or a set of antennas.

[0158]

[0166] The preemption manager 915 may determine an operational state for the UE to apply the preemption indication based on a priority of a channel associated with the preemption indication (e.g., a DLPI or ULCI), send a configuration message to the UE including a parameter indicating the operational state, send a grant to the UE indicating time-frequency resources scheduled for the channel, send an instance of the preemption indication, determine a remaining portion of the identified time-frequency resources based on the instance of the preemption indication and the priority of the channel, and communicate with the UE using the remaining portion of the time-frequency resources. The preemption manager 915 may be an example of an aspect of the preemption manager 1210 described herein.

[0159]

[0167] Preemption manager 915, or subcomponents thereof, may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of preemption manager 915, or subcomponents thereof, may be performed by a general-purpose processor, a DSP, an 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 this disclosure.

[0160]

[0168] The actions performed by the preemption manager 915 as described herein may be implemented to realize one or more potential advantages. One implementation may enable a base station to configure a UE with an operating state related to a preemption indication. Such configuration may enable techniques for time-frequency resource preemption or cancellation at the UE based on channel priority and operating state, which may result in higher data rates and more efficient communications (e.g., fewer communication errors), among other advantages.

[0161]

[0169] Based on implementing the configurations as described herein, a processor of a UE or base station (e.g., a processor controlling the receiver 910, the preemption manager 915, the transmitter 920, or a combination thereof) may reduce the impact or likelihood of preemption or cancellation errors in a communication system while ensuring relatively efficient communication. For example, the configuration techniques described herein may exploit the relationship between the priority of channels related to preemption indications as well as the operating state of the UE, which may achieve, among other benefits, reduced signaling overhead and power savings.

[0162]

[0170] The preemption manager 915, or subcomponents thereof, may be physically located in various locations, including being distributed such that portions of the functionality are implemented at different physical locations by one or more physical components. In some examples, the preemption manager 915, or subcomponents thereof, may be separate and distinct components according to various aspects of the present disclosure. In some examples, the preemption manager 915, or subcomponents thereof, may be combined with one or more other hardware components, including, but not limited to, an I / O component, a transceiver, a network server, another computing device, one or more other components described in this disclosure, or a combination thereof, according to various aspects of the present disclosure.

[0163]

[0171] The transmitter 920 may transmit signals generated by other components of the device 905. In some examples, the transmitter 920 may be co-located with the receiver 910 in a transceiver module. For example, the transmitter 920 may be an example of an aspect of the transceiver 1220 described with reference to FIG. 12. The transmitter 920 may utilize a single antenna or a set of antennas.

[0164]

[0172] 10 shows a block diagram 1000 of a device 1005 that supports priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The device 1005 may be an example of an aspect of a device 905 or a base station 105 described herein. The device 1005 may include a receiver 1010, a preemption manager 1015, and a transmitter 1050. The device 1005 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0165]

[0173] The receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., information related to control channels, data channels, and priority indications for downlink preemption and uplink cancellation, etc.). The information may be passed to other components of the device 1005. The receiver 1010 may be an example of an aspect of the transceiver 1220 described with reference to FIG. 12. The receiver 1010 may utilize a single antenna or a set of antennas.

[0166]

[0174] The preemption manager 1015 may be an example of an aspect of the preemption manager 915 described herein. The preemption manager 1015 may include an operational state manager 1020, a configuration transmitter 1025, an authorization component 1030, an indication transmitter 1035, a resource manager 1040, and a communication module 1045. The preemption manager 1015 may be an example of an aspect of the preemption manager 1210 described herein.

[0167]

[0175] The operational state manager 1020 may determine an operational state for the UE for applying the preemption indication based on the priority of the channel associated with the preemption indication (e.g., DLPI or ULCI). The configuration transmitter 1025 may send a configuration message to the UE including a parameter indicating the operational state. The grant component 1030 may send a grant to the UE indicating the time-frequency resources scheduled for the channel.

[0168]

[0176] The indication transmitter 1035 may transmit an instance of the preemption indication. The resource manager 1040 may determine a remaining portion of the identified time-frequency resources based on the instance of the preemption indication and the priority of the channel. The communication module 1045 may communicate with the UE using the remaining portion of the time-frequency resources.

[0169]

[0177] The transmitter 1050 may transmit signals generated by other components of the device 1005. In some examples, the transmitter 1050 may be co-located with the receiver 1010 in a transceiver module. For example, the transmitter 1050 may be an example of an aspect of the transceiver 1220 described with reference to FIG. 12. The transmitter 1050 may utilize a single antenna or a set of antennas.

[0170]

[0178] 11 shows a block diagram 1100 of a preemption manager 1105 supporting priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The preemption manager 1105 may be an example of an aspect of the preemption manager 915, the preemption manager 1015, or the preemption manager 1210 described herein. The preemption manager 1105 may include an operation state manager 1110, a configuration transmitter 1115, an authorization component 1120, an indication transmitter 1125, a resource manager 1130, a communication module 1135, a transmission manager 1140, a channel component 1145, a message transmitter 1150, a message monitor 1155, and a configuration manager 1160. Each of these modules may communicate with one another directly or indirectly (e.g., via one or more buses).

[0171]

[0179] The operational state manager 1110 may determine an operational state for the UE for applying the preemption indication based on the priority of the channel associated with the preemption indication (e.g., DLPI or ULCI). The configuration transmitter 1115 may send a configuration message to the UE including a parameter indicating the operational state. The grant component 1120 may send a grant to the UE indicating the time-frequency resources scheduled for the channel.

[0172]

[0180] The indication transmitter 1125 may transmit an instance of a preemption indication. In some cases, the preemption indication includes a DLPI. In some cases, the preemption indication includes a ULCI. In some examples, the indication transmitter 1125 may transmit a DLPI using a set of time-frequency resources. In some examples, the indication transmitter 1125 may transmit a ULCI using a set of time-frequency resources.

[0173]

[0181] The resource manager 1130 may determine a remaining portion of the identified time-frequency resources based on the instance of the preemption indication and the priority of the channel. In some examples, the resource manager 1130 may determine a set of time-frequency resources of the identified time-frequency resources scheduled for the channel, where the set of time-frequency resources does not overlap with the remaining portion of the time-frequency resources. The communication module 1135 may communicate with the UE using the remaining portion of the time-frequency resources.

[0174]

[0182] The transmission manager 1140 may refrain from transmitting a channel using time-frequency resources based on the DLPI. In some examples, the transmission manager 1140 may transmit the second channel using a set of time-frequency resources based on the operating state and the DLPI associated with the priority.

[0175]

[0183] The channel component 1145 may determine a set of time-frequency resources for a second channel associated with a second priority different from the priority of the channel, where the set of time-frequency resources does not overlap with the remainder of the time-frequency resources. In some cases, the second channel may be associated with a different carrier than the channel.

[0176]

[0184] The message transmitter 1150 may transmit a message indicating a set of time-frequency resources for the DLPI. In some examples, the message transmitter 1150 may transmit a message indicating a set of time-frequency resources for the ULCI. In some examples, the message transmitter 1150 may transmit a first message configuring the UE to monitor the DLPI. In some examples, the message transmitter 1150 may transmit a second message configuring the UE to monitor the ULCI.

[0177]

[0185] The message monitor 1155 may refrain from monitoring the set of time-frequency resources for uplink messages from the UE based on the ULCI. In some examples, the message monitor 1155 may monitor the set of time-frequency resources for the second channel based on the operating state and the ULCI being associated with a priority. The configuration manager 1160 may configure the UE to monitor both the DLPI and the ULCI.

[0178]

[0186] 12 shows a diagram of a system 1200 including a device 1205 supporting priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The device 1205 may be an example of or include components of the device 905, device 1005, or base station 105 described herein. The device 1205 may include components for two-way voice and data communication, including components for transmitting and receiving communications, including a preemption manager 1210, a network communications manager 1215, a transceiver 1220, an antenna 1225, a memory 1230, a processor 1240, and an inter-station communications manager 1245. These components may be in electronic communication via one or more buses (e.g., bus 1250).

[0179]

[0187] The preemption manager 1210 may determine an operating state for the UE for applying the preemption indication based on a priority of a channel associated with the preemption indication (e.g., DLPI or ULCI), send a configuration message to the UE including parameters indicating the operating state, send a grant to the UE indicating time-frequency resources scheduled for the channel, send an instance of the preemption indication, determine a remaining portion of the identified time-frequency resources based on the instance of the preemption indication and the priority of the channel, and communicate with the UE using the remaining portion of the time-frequency resources.

[0180]

[0188] The network communications manager 1215 may manage communications with the core network (e.g., via one or more wired backhaul links). For example, the network communications manager 1215 may manage the forwarding of data communications for client devices, such as one or more UEs 115.

[0181]

[0189] The transceiver 1220 may communicate bidirectionally via one or more antennas, wired links, or wireless links as described herein. For example, the transceiver 1220 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1220 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and for demodulating packets received from the antenna.

[0182]

[0190] In some cases, a wireless device may include a single antenna 1225. However, in some cases, the device may have two or more antennas 1225 that may be capable of concurrently transmitting or receiving multiple wireless transmissions.

[0183]

[0191] The memory 1230 may include RAM, ROM, or a combination thereof. The memory 1230 may store computer-readable code 1235 including instructions that, when executed by a processor (e.g., the processor 1240), cause the device to perform various functions described herein. In some cases, the memory 1230 may include a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0184]

[0192] Processor 1240 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1240 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be incorporated into processor 1240. Processor 1240 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1230) to cause device 1205 to perform various functions (e.g., functions or tasks supporting priority indication for downlink preemption and uplink cancellation).

[0185]

[0193] The inter-station communications manager 1245 may manage communications with other base stations 105 and may include a controller or scheduler for controlling communications with the UE 115 in cooperation with the other base stations 105. For example, the inter-station communications manager 1245 may coordinate scheduling for transmissions to the UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, the inter-station communications manager 1245 may provide an X2 interface within the LTE / LTE-A wireless communications network technology for communicating between the base stations 105.

[0186]

[0194] Code 1235 may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communication. Code 1235 may be stored on a non-transitory computer-readable medium, such as system memory or other type of memory. In some cases, code 1235 may not be directly executable by processor 1240, but may (e.g., when compiled and executed) cause a computer to perform functions described herein.

[0187]

[0195] FIG. 13 shows a flowchart illustrating a method 1300 for supporting priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The operations of method 1300 may be implemented by the UE 115 or components thereof described herein. For example, the operations of method 1300 may be performed by the preemption manager described with reference to FIGS. 5-8. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described herein.

[0188]

[0196] At 1305, the UE may receive from the base station a configuration message including parameters indicating an operational state by the UE for applying the preemption indication based at least in part on a priority of a channel associated with the preemption indication (e.g., DLPI or ULCI). The operations of 1305 may be performed according to methods described herein. In some examples, aspects of the operations of 1305 may be performed by operational state components described with reference to FIGS. 5-8.

[0189]

[0197] At 1310, the UE may identify a priority of the channel and the time-frequency resources scheduled for the channel. The operations of 1310 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1310 may be performed by a channel manager described with reference to FIGS. 5-8.

[0190]

[0198] At 1315, the UE may receive an instance of a preemption indication. The operations of 1315 may be performed according to methods described herein. In some examples, aspects of the operations of 1315 may be performed by a preemption indication component described with reference to FIGS. 5-8.

[0191]

[0199] At 1320, the UE may determine a remaining portion of the identified time-frequency resource based at least in part on the received instance of the preemption indication and the identified priority of the channel. The operations of 1320 may be performed according to methods described herein. In some examples, aspects of the operations of 1320 may be performed by resource components described with reference to FIGS. 5-8.

[0192]

[0200] At 1325, the UE may communicate with the base station using the remaining portion of the time-frequency resources. The operations of 1325 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1325 may be performed by communication components described with reference to FIGS. 5-8.

[0193]

[0201] FIG. 14 shows a flowchart illustrating a method 1400 for supporting priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The operations of method 1400 may be implemented by the UE 115 or components thereof described herein. For example, the operations of method 1400 may be performed by the preemption manager described with reference to FIGS. 5-8. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described herein.

[0194]

[0202] At 1405, the UE may receive from the base station a configuration message including parameters indicating an operational state by the UE for applying the preemption indication based at least in part on a priority of a channel associated with the preemption indication (e.g., DLPI or ULCI). The operations of 1405 may be performed according to methods described herein. In some examples, aspects of the operations of 1405 may be performed by operational state components described with reference to FIGS. 5-8.

[0195]

[0203] At 1410, the UE may identify a priority of the channel and the time-frequency resources scheduled for the channel. The operations of 1410 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1410 may be performed by a channel manager described with reference to FIGS. 5-8.

[0196]

[0204] At 1415, the UE may receive an instance of a preemption indication. The operations of 1415 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1415 may be performed by a preemption indication component described with reference to FIGS. 5-8.

[0197]

[0205] At 1420, the UE may determine that the preemption indication includes a DLPI. The operations of 1420 may be performed according to methods described herein. In some examples, aspects of the operations of 1420 may be performed by a preemption indication component described with reference to FIGS. 5-8.

[0198]

[0206] At 1425, the UE may determine a remaining portion of the identified time-frequency resource based at least in part on the received instance of the preemption indication and the identified priority of the channel. The operations of 1425 may be implemented according to methods described herein. In some examples, aspects of the operations of 1425 may be implemented by resource components described with reference to FIGS. 5-8.

[0199]

[0207] At 1430, the UE may determine a set of time frequency resources of the identified time frequency resources scheduled for the channel, where the set of time frequency resources does not overlap with the remainder of the time frequency resources. The operations of 1430 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1430 may be performed by resource components described with reference to FIGS. 5-8.

[0200]

[0208] At 1435, the UE may refrain from monitoring the set of time-frequency resources based at least in part on the DLPI. The operations of 1435 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1435 may be performed by a monitoring component described with reference to FIGS. 5-8.

[0201]

[0209] At 1440, the UE may communicate with the base station using the remaining portion of the time-frequency resources. The operations of 1440 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1440 may be performed by communication components described with reference to FIGS. 5-8.

[0202]

[0210] FIG. 15 shows a flowchart illustrating a method 1500 for supporting priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The operations of method 1500 may be implemented by the UE 115 or components thereof described herein. For example, the operations of method 1500 may be performed by the preemption manager described with reference to FIGS. 5-8. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described herein.

[0203]

[0211] At 1505, the UE may receive from the base station a configuration message including parameters indicating an operational state by the UE for applying the preemption indication based at least in part on a priority of a channel associated with the preemption indication (e.g., DLPI or ULCI). The operations of 1505 may be performed according to methods described herein. In some examples, aspects of the operations of 1505 may be performed by operational state components described with reference to FIGS. 5-8.

[0204]

[0212] At 1510, the UE may identify a priority of the channel and the time-frequency resources scheduled for the channel. The operations of 1510 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1510 may be performed by a channel manager described with reference to FIGS. 5-8.

[0205]

[0213] At 1515, the UE may receive an instance of a preemption indication. The operations of 1515 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1515 may be performed by a preemption indication component described with reference to FIGS. 5-8.

[0206]

[0214] At 1520, the UE may determine that the preemption indication includes an ULCI. The operations of 1520 may be performed according to methods described herein. In some examples, aspects of the operations of 1520 may be performed by a preemption indication component described with reference to FIGS. 5-8.

[0207]

[0215] At 1525, the UE may determine a remaining portion of the identified time-frequency resource based at least in part on the received instance of the preemption indication and the identified priority of the channel. The operations of 1525 may be performed according to methods described herein. In some examples, aspects of the operations of 1525 may be performed by resource components described with reference to FIGS. 5-8.

[0208]

[0216] At 1530, the UE may determine a set of time frequency resources of the identified time frequency resources scheduled for the channel, where the set of time frequency resources does not overlap with the remainder of the time frequency resources. The operations of 1530 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1530 may be performed by resource components described with reference to FIGS. 5-8.

[0209]

[0217] At 1535, the UE may refrain from transmitting uplink messages using the set of time-frequency resources based at least in part on the ULCI. The operations of 1535 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1535 may be performed by a transmitting component described with reference to FIGS. 5-8.

[0210]

[0218] At 1540, the UE may communicate with the base station using the remaining portion of the time-frequency resources. The operations of 1540 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1540 may be performed by communication components described with reference to FIGS. 5-8.

[0211]

[0219] FIG. 16 shows a flowchart illustrating a method 1600 for supporting priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The operations of method 1600 may be implemented by a base station 105 or components thereof described herein. For example, the operations of method 1600 may be performed by a preemption manager described with reference to FIGS. 9-12. In some examples, the base station may execute a set of instructions to control functional elements of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the functions described herein.

[0212]

[0220] At 1605, the base station may determine an operational state for the UE for applying the preemption indication based at least in part on a priority of a channel associated with the preemption indication (e.g., DLPI or ULCI). The operations of 1605 may be performed according to methods described herein. In some examples, aspects of the operations of 1605 may be performed by an operational state manager described with reference to FIGS. 9-12.

[0213]

[0221] At 1610, the base station may transmit a configuration message to the UE including parameters indicating an operational state. The operations of 1610 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1610 may be performed by a configuration transmitter described with reference to FIGS. 9-12.

[0214]

[0222] At 1615, the base station may send to the UE a grant indicating the time-frequency resources scheduled for the channel. The operations of 1615 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1615 may be performed by a granting component described with reference to FIGS. 9-12.

[0215]

[0223] At 1620, the base station may transmit an instance of a preemption indication. The operations of 1620 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1620 may be performed by an indication transmitter described with reference to FIGS. 9-12.

[0216]

[0224] At 1625, the base station may determine a remaining portion of the identified time-frequency resources based at least in part on the instance of the preemption indication and the priority of the channel. The operations of 1625 may be performed according to methods described herein. In some examples, aspects of the operations of 1625 may be performed by a resource manager described with reference to FIGS. 9-12.

[0217]

[0225] At 1630, the base station may communicate with the UE using the remaining portion of the time-frequency resources. The operations of 1630 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1630 may be performed by the communications modules described with reference to FIGS. 9-12.

[0218]

[0226] FIG. 17 shows a flowchart illustrating a method 1700 for supporting priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The operations of method 1700 may be implemented by a base station 105 described herein or components thereof. For example, the operations of method 1700 may be performed by a preemption manager described with reference to FIGS. 9-12. In some examples, the base station may execute a set of instructions to control functional elements of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the functions described herein.

[0219]

[0227] At 1705, the base station may determine an operational state for the UE for applying the preemption indication based at least in part on a priority of a channel associated with the preemption indication (e.g., DLPI or ULCI). The operations of 1705 may be performed according to methods described herein. In some examples, aspects of the operations of 1705 may be performed by an operational state manager described with reference to FIGS. 9-12.

[0220]

[0228] At 1710, the base station may transmit a configuration message to the UE including parameters indicating an operational state. The operation of 1710 may be performed in accordance with methods described herein. In some examples, aspects of the operation of 1710 may be performed by a configuration transmitter described with reference to FIGS. 9-12.

[0221]

[0229] At 1715, the base station may send to the UE a grant indicating the time-frequency resources scheduled for the channel. The operations of 1715 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1715 may be performed by a granting component described with reference to FIGS. 9-12.

[0222]

[0230] At 1720, the base station may transmit an instance of a preemption indication that includes the DLPI. The operations of 1720 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1720 may be performed by an indication transmitter described with reference to FIGS. 9-12.

[0223]

[0231] At 1725, the base station may refrain from transmitting a channel using the time-frequency resource based at least in part on the DLPI. The operations of 1725 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1725 may be performed by a transmission manager described with reference to FIGS. 9-12.

[0224]

[0232] At 1730, the base station may determine a remaining portion of the identified time-frequency resources based at least in part on the instance of the preemption indication and the priority of the channel. The operations of 1730 may be performed according to methods described herein. In some examples, aspects of the operations of 1730 may be performed by a resource manager described with reference to FIGS. 9-12.

[0225]

[0233] At 1735, the base station may communicate with the UE using the remaining portion of the time-frequency resources. The operations of 1735 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1735 may be performed by the communications modules described with reference to FIGS. 9-12.

[0226]

[0234] FIG. 18 shows a flowchart illustrating a method 1800 for supporting priority indication for downlink preemption and uplink cancellation according to an aspect of the present disclosure. The operations of method 1800 may be implemented by a base station 105 described herein or components thereof. For example, the operations of method 1800 may be performed by a preemption manager described with reference to FIGS. 9-12. In some examples, the base station may execute a set of instructions to control functional elements of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the functions described herein.

[0227]

[0235] At 1805, the base station may determine an operational state for the UE for applying the preemption indication based at least in part on a priority of a channel associated with the preemption indication (e.g., DLPI or ULCI). The operations of 1805 may be performed according to methods described herein. In some examples, aspects of the operations of 1805 may be performed by an operational state manager described with reference to FIGS. 9-12.

[0228]

[0236] At 1810, the base station may transmit a configuration message to the UE including parameters indicating an operational state. The operation of 1810 may be performed in accordance with methods described herein. In some examples, aspects of the operation of 1810 may be performed by a configuration transmitter described with reference to FIGS. 9-12.

[0229]

[0237] At 1815, the base station may send to the UE a grant indicating the time-frequency resources scheduled for the channel. The operations of 1815 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1815 may be performed by a granting component described with reference to FIGS. 9-12.

[0230]

[0238] At 1820, the base station may transmit an instance of a preemption indication that includes the ULCI. The operations of 1820 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1820 may be performed by an indication transmitter described with reference to FIGS. 9-12.

[0231]

[0239] At 1825, the base station may determine a set of time frequency resources of the identified time frequency resources scheduled for the channel, where the set of time frequency resources does not overlap with the remainder of the time frequency resources. The operations of 1825 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1825 may be performed by a resource manager described with reference to FIGS. 9-12.

[0232]

[0240] At 1830, the base station may refrain from monitoring the set of time-frequency resources for uplink messages from the UE based at least in part on the ULCI. The operations of 1830 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1830 may be performed by the message monitor described with reference to FIGS. 9-12.

[0233]

[0241] At 1835, the base station may determine a remaining portion of the identified time-frequency resources based at least in part on the instance of the preemption indication and the priority of the channel. The operations of 1835 may be performed according to methods described herein. In some examples, aspects of the operations of 1835 may be performed by a resource manager described with reference to FIGS. 9-12.

[0234]

[0242] At 1840, the base station may communicate with the UE using the remaining portion of the time-frequency resources. The operations of 1840 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1840 may be performed by the communications modules described with reference to FIGS. 9-12.

[0235]

[0243] It should be noted that the methods described herein represent possible implementations, and that the operations and steps may be rearranged or possibly modified, and that other implementations are possible. Furthermore, aspects from two or more of the methods may be combined.

[0236]

[0244] The following provides a summary of aspects of the present disclosure.

[0237]

[0245] Aspect 1: A method for wireless communication in a UE, comprising: receiving, from a base station, a configuration message comprising parameters indicating an operation state by the UE for applying a preemption instruction based at least in part on a priority of a channel associated with the preemption instruction; identifying a priority of the channel and time-frequency resources scheduled for the channel; receiving an instance of the preemption instruction; determining a remaining portion of the identified time-frequency resources based at least in part on the received instance of the preemption instruction and the identified priority of the channel; and communicating with the base station using the remaining portion of the time-frequency resources.

[0238]

[0246] Aspect 2: The method of aspect 1, wherein the preemption indication comprises an uplink cancellation indication.

[0239]

[0247] Aspect 3: The method of aspect 2, further comprising: determining a set of time-frequency resources of the identified time-frequency resources scheduled for the channel; and refraining from transmitting an uplink message using the set of time-frequency resources based at least in part on an uplink cancellation indication, wherein the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0240]

[0248] Aspect 4: The method of any of aspects 2 to 3, further comprising: determining a set of time-frequency resources scheduled for a second channel associated with a second priority different from the priority of the channel; and transmitting the second channel using the set of time-frequency resources based at least in part on an operating state and an uplink cancellation indication associated with the priority, where the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0241]

[0249] Aspect 5: The method of aspect 4, wherein the second channel is associated with a different carrier than the channel.

[0242]

[0250] Aspect 6: The method of any of aspects 2 to 5, further comprising: receiving a message indicating a set of time-frequency resources for an uplink cancellation indication; monitoring the set of time-frequency resources for the uplink cancellation indication; and receiving an instance of a preemption indication based at least in part on the monitoring.

[0243]

[0251] Aspect 7: The method of aspect 1, wherein the preemption indication comprises a downlink preemption indication.

[0244]

[0252] Aspect 8: The method of aspect 7, further comprising: determining a set of time-frequency resources of the identified time-frequency resources scheduled for the channel; and refraining from monitoring the set of time-frequency resources based at least in part on a downlink preemption indication, wherein the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0245]

[0253] Aspect 9: The method of any of aspects 7 to 8, further comprising: determining a set of scheduled time-frequency resources for a second channel associated with a second priority different from the priority of the channel; and monitoring the set of time-frequency resources for the second channel based at least in part on an operating state and a downlink preemption indication associated with the priority, wherein the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0246]

[0254] Embodiment 10: The method of embodiment 9, wherein the second channel is associated with a different carrier than the channel.

[0247]

[0255] Aspect 11: The method of any of aspects 7 to 10, further comprising: receiving a message indicating a set of time-frequency resources for a downlink preemption indication; monitoring the set of time-frequency resources for the downlink preemption indication; and receiving an instance of the preemption indication based at least in part on the monitoring.

[0248]

[0256] Aspect 12: The method of any of aspects 1 to 11, further comprising configuring a UE to monitor both a downlink preemption indication and an uplink cancellation indication.

[0249]

[0257] Aspect 13: The method of aspect 12, wherein configuring the UE to monitor both a downlink preemption indication and an uplink cancellation indication comprises receiving a first message configuring the UE to monitor a downlink preemption indication and receiving a second message configuring the UE to monitor an uplink cancellation indication.

[0250]

[0258] Aspect 14: The method of any of aspects 1 to 13, further comprising: the UE determining a plurality of channels, including a channel to which the preemption indication will be applied, based at least in part on an operating state.

[0251]

[0259] Embodiment 15: The method of embodiment 14, wherein the plurality of channels comprises at least two channels with different priorities.

[0252]

[0260] Aspect 16: A method for wireless communication in a base station, comprising: determining an operational state for a UE for applying a preemption indication based at least in part on a priority of a channel associated with the preemption indication; transmitting a configuration message to the UE comprising parameters indicative of the operational state; transmitting a grant to the UE indicating time-frequency resources scheduled for the channel; transmitting an instance of the preemption indication; determining a remaining portion of the identified time-frequency resources based at least in part on the instance of the preemption indication and the priority of the channel; and communicating with the UE using the remaining portion of the time-frequency resources.

[0253]

[0261] Aspect 17: The method of aspect 16, wherein the preemption indication comprises an uplink cancellation indication.

[0254]

[0262] Aspect 18: The method of aspect 17, further comprising: determining a set of time-frequency resources of the identified time-frequency resources scheduled for the channel; and refraining from monitoring the set of time-frequency resources for uplink messages from the UE based at least in part on an uplink cancellation indication, wherein the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0255]

[0263] Aspect 19: The method of any of aspects 17 to 18, further comprising: determining a set of time-frequency resources for a second channel associated with a second priority different from the priority of the channel; and monitoring the set of time-frequency resources for the second channel based at least in part on an operating state and an uplink cancellation indication associated with the priority, wherein the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0256]

[0264] Embodiment 20: The method of embodiment 19, wherein the second channel is associated with a different carrier than the channel.

[0257]

[0265] Aspect 21: The method of any of aspects 17 to 20, further comprising: transmitting a message indicating a set of time-frequency resources for an uplink cancellation indication; and transmitting the uplink cancellation indication using the set of time-frequency resources.

[0258]

[0266] Aspect 22: The method of aspect 16, wherein the preemption indication comprises a downlink preemption indication.

[0259]

[0267] Aspect 23: The method of aspect 22, further comprising refraining from transmitting a channel using a time-frequency resource based at least in part on the downlink preemption indication.

[0260]

[0268] Aspect 24: The method of any of aspects 22 to 23, further comprising: determining a set of time-frequency resources for a second channel associated with a second priority different from the priority of the channel; and transmitting the second channel using the set of time-frequency resources based at least in part on an operating state and a downlink preemption indication associated with the priority, where the set of time-frequency resources does not overlap with the remainder of the time-frequency resources.

[0261]

[0269] Embodiment 25: The method of embodiment 24, wherein the second channel is associated with a different carrier than the channel.

[0262]

[0270] Aspect 26: The method of any of aspects 22 to 25, further comprising: transmitting a message indicating a set of time-frequency resources for a downlink preemption indication; and transmitting the downlink preemption indication using the set of time-frequency resources.

[0263]

[0271] Aspect 27: The method of any of aspects 16 to 26, further comprising configuring the UE to monitor both a downlink preemption indication and an uplink cancellation indication.

[0264]

[0272] Aspect 28: The method of aspect 27, wherein configuring the UE to monitor both a downlink preemption indication and an uplink cancellation indication comprises transmitting a first message configuring the UE to monitor a downlink preemption indication and transmitting a second message configuring the UE to monitor an uplink cancellation indication.

[0265]

[0273] Aspect 29: An apparatus for wireless communication in 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 a method described in any of aspects 1 to 15.

[0266]

[0274] Aspect 30: An apparatus for wireless communication in a UE, the apparatus comprising at least one means for performing the method described in any of aspects 1 to 15.

[0267]

[0275] Aspect 31: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code comprising instructions executable by a processor to perform a method described in any of aspects 1 to 15.

[0268]

[0276] Aspect 32: An apparatus for wireless communication in a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method described in any of aspects 16 to 28.

[0269]

[0277] Aspect 33: An apparatus for wireless communication in a base station, the apparatus comprising at least one means for performing the method of any of aspects 16 to 28.

[0270]

[0278] Aspect 34: A non-transitory computer-readable medium storing code for wireless communication in a base station, the code comprising instructions executable by a processor to perform a method as recited in any of aspects 16 to 28.

[0271]

[0279] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described as examples, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the description, the techniques described herein may be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0272]

[0280] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0273]

[0281] The various example blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but alternatively, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0274]

[0282] 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 on or transmitted over a computer-readable medium as one or more instructions or code. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed such that portions of the functions are implemented in different physical locations.

[0275]

[0283] Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates transfer of a computer program from one place to another. Non-transitory storage media may be any available medium that can be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, Electrically Erasable Programmable Read Only Memory (EEPROM), Flash memory, Compact Disc (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disk and disc include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically and discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0276]

[0284] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (e.g., A and B and C). Also, as used herein, the phrase "based on" is not to be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" is to be construed in the same manner as the phrase "based at least in part on."

[0277]

[0285] In the accompanying figures, similar components or features may have the same reference label. Furthermore, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes among the similar components. If only a first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of a second reference label or other subsequent reference label.

[0278]

[0286] The description set forth herein with reference to the accompanying drawings describes exemplary configurations and does not necessarily represent every example that may be implemented or that falls within the scope of the claims. As used herein, the term "exemplary" means "serving as an example, instance, or illustration," and does not mean "preferred" or "advantageous over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

[0279]

[0287] The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications of the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. 1. A method for wireless communication in a user equipment (UE), comprising: receiving, from a base station, a configuration message comprising parameters indicating an operation by the UE to apply a preemption indication based at least in part on a priority of a channel associated with the preemption indication; identifying the priority of the channel and a time-frequency resource scheduled for the channel; receiving an instance of the preemption indication; determining a remaining portion of the identified time-frequency resource based at least in part on the received instance of the preemption indication and the identified priority of the channel; and communicating with the base station using the remaining portion of the time frequency resources.

2. The method of claim 1 , wherein the preemption indication comprises an uplink cancellation indication.

3. determining a set of time frequency resources of the identified time frequency resources scheduled for the channel, the set of time frequency resources not overlapping with the remaining portion of the time frequency resources; 3. The method of claim 2, further comprising: refraining from transmitting uplink messages using the set of time-frequency resources based at least in part on the uplink cancellation indication.

4. determining a set of time-frequency resources scheduled for a second channel associated with a second priority different from the priority of the channel, wherein the set of time-frequency resources does not overlap with the remaining portion of the time-frequency resources; and transmitting the second channel using the set of time-frequency resources based at least in part on the operating state and the uplink cancellation indication being associated with the priority.

5. The method of claim 4 , wherein the second channel is associated with a different carrier than the first channel.

6. receiving a message indicating a set of time-frequency resources for the uplink cancellation indication; 3. The method of claim 2, further comprising: monitoring the set of time-frequency resources for the uplink cancellation indication; and receiving the instance of the preemption indication based at least in part on the monitoring.

7. The method of claim 1 , wherein the preemption indication comprises a downlink preemption indication.

8. determining a set of time frequency resources of the identified time frequency resources scheduled for the channel, the set of time frequency resources not overlapping with the remaining portion of the time frequency resources; 8. The method of claim 7, further comprising refraining from monitoring the set of time-frequency resources based at least in part on the downlink preemption indication.

9. determining a set of time-frequency resources scheduled for a second channel associated with a second priority different from the priority of the channel, wherein the set of time-frequency resources does not overlap with the remaining portion of the time-frequency resources; 8. The method of claim 7, further comprising: monitoring the set of time-frequency resources for the second channel based at least in part on the operating state and the downlink preemption indication being associated with the priority.

10. The method of claim 9 , wherein the second channel is associated with a different carrier than the first channel.

11. receiving a message indicating a set of time-frequency resources for the downlink preemption indication; 8. The method of claim 7, further comprising: monitoring the set of time-frequency resources for the downlink preemption indication; and receiving the instance of the preemption indication based at least in part on the monitoring.

12. 10. The method of claim 1, further comprising configuring the UE to monitor both downlink preemption indications and uplink cancellation indications.

13. Configuring the UE to monitor both the downlink preemption indication and the uplink cancellation indication, receiving a first message configuring the UE to monitor for the downlink preemption indication; and receiving a second message that configures the UE to monitor the uplink cancellation indication.

14. The method of claim 1 , further comprising: determining a plurality of channels, including the channel, to which the UE will apply the preemption indication based at least in part on the operating conditions.

15. The method of claim 14 , wherein the plurality of channels comprises at least two channels with different priorities.

16. 1. A method for wireless communication in a base station, comprising: determining an operational state for a user equipment (UE) for applying the preemption indication based at least in part on a priority of a channel associated with the preemption indication; sending a configuration message to the UE, the configuration message comprising a parameter indicating the operating state; sending a grant to the UE indicating scheduled time-frequency resources for the channel; transmitting an instance of said preemption indication; determining a remaining portion of the identified time-frequency resource based at least in part on the instance of the preemption indication and the priority of the channel; and communicating with the UE using the remaining portion of the time frequency resources.

17. 17. The method of claim 16, wherein the preemption indication comprises an uplink cancellation indication.

18. determining a set of time frequency resources of the identified time frequency resources scheduled for the channel, the set of time frequency resources not overlapping with the remaining portion of the time frequency resources; 18. The method of claim 17, further comprising: refraining from monitoring the set of time-frequency resources for uplink messages from the UE based at least in part on the uplink cancellation indication.

19. determining a set of time-frequency resources for a second channel associated with a second priority different from the priority of the channel, wherein the set of time-frequency resources does not overlap with the remaining portion of the time-frequency resources; 20. The method of claim 17, further comprising: monitoring the set of time-frequency resources for the second channel based at least in part on the operating state and the uplink cancellation indication being associated with the priority.

20. 20. The method of claim 19, wherein the second channel is associated with a different carrier than the channel.

21. transmitting a message indicating a set of time-frequency resources for the uplink cancellation indication; 20. The method of claim 17, further comprising: transmitting the uplink cancellation indication using the set of time-frequency resources.

22. The method of claim 16 , wherein the preemption indication comprises a downlink preemption indication.

23. 23. The method of claim 22, further comprising refraining from transmitting the channel using the time-frequency resource based at least in part on the downlink preemption indication.

24. determining a set of time-frequency resources for a second channel associated with a second priority different from the priority of the channel, wherein the set of time-frequency resources does not overlap with the remaining portion of the time-frequency resources; 23. The method of claim 22, further comprising: transmitting the second channel using the set of time-frequency resources based at least in part on the operating state and the downlink preemption indication being associated with the priority.

25. 25. The method of claim 24, wherein the second channel is associated with a different carrier than the channel.

26. transmitting a message indicating a set of time-frequency resources for the downlink preemption indication; 23. The method of claim 22, further comprising: transmitting the downlink preemption indication using the set of time-frequency resources.

27. 17. The method of claim 16, further comprising configuring the UE to monitor both downlink preemption indications and uplink cancellation indications.

28. Configuring the UE to monitor both the downlink preemption indication and the uplink cancellation indication, transmitting a first message configuring the UE to monitor the downlink preemption indication; and transmitting a second message configuring the UE to monitor the uplink cancellation indication.

29. 1. An apparatus for wireless communication in a user equipment (UE), comprising: means for receiving, from a base station, a configuration message comprising parameters indicative of an operation by the UE to apply a preemption indication based at least in part on a priority of a channel associated with the preemption indication; means for identifying the priority of the channel and the time-frequency resources scheduled for the channel; means for receiving an instance of said preemption indication; means for determining a remaining portion of the identified time-frequency resource based at least in part on the received instance of the preemption indication and the identified priority of the channel; means for communicating with the base station using the remaining portion of the time frequency resources.

30. 30. The apparatus of claim 29, wherein the preemption indication comprises an uplink cancellation indication.

31. means for determining a set of time frequency resources of the identified time frequency resources scheduled for the channel, the set of time frequency resources not overlapping with the remaining portion of the time frequency resources; and means for refraining from transmitting uplink messages using the set of time-frequency resources based at least in part on the uplink cancellation indication.

32. means for determining a set of time-frequency resources scheduled for a second channel associated with a second priority different from the priority of the channel, the set of time-frequency resources not overlapping with the remaining portion of the time-frequency resources; and means for transmitting the second channel using the set of time-frequency resources based at least in part on the operating state and the uplink cancellation indication being associated with the priority.

33. 33. The apparatus of claim 32, wherein the second channel is associated with a different carrier than the channel.

34. means for receiving a message indicating a set of time-frequency resources for the uplink cancellation indication; 31. The apparatus of claim 30, further comprising: means for monitoring the set of time-frequency resources for the uplink cancellation indication; and wherein receiving the instance of the preemption indication is based at least in part on the monitoring.

35. 30. The apparatus of claim 29, wherein the preemption indication comprises a downlink preemption indication.

36. means for determining a set of time frequency resources of the identified time frequency resources scheduled for the channel, the set of time frequency resources not overlapping with the remaining portion of the time frequency resources; and means for refraining from monitoring the set of time-frequency resources based at least in part on the downlink preemption indication.

37. means for determining a set of time-frequency resources scheduled for a second channel associated with a second priority different from the priority of the channel, the set of time-frequency resources not overlapping with the remaining portion of the time-frequency resources; and means for monitoring the set of time-frequency resources for the second channel based at least in part on the operating state and the downlink preemption indication being associated with the priority.

38. means for receiving a message indicating a set of time-frequency resources for the downlink preemption indication; 36. The apparatus of claim 35, further comprising: means for monitoring the set of time-frequency resources for the downlink preemption indication; and wherein receiving the instance of the preemption indication is based at least in part on the monitoring.

39. 30. The apparatus of claim 29, further comprising: means for configuring the UE to monitor both downlink preemption indications and uplink cancellation indications.

40. 30. The apparatus of claim 29, further comprising: means for determining a plurality of channels, including the channel, to which the UE will apply the preemption indication based at least in part on the operating conditions.

41. 1. An apparatus for wireless communication at a base station, comprising: means for determining an operational state for a user equipment (UE) for applying the preemption indication based at least in part on a priority of a channel associated with the preemption indication; means for transmitting to the UE a configuration message comprising a parameter indicative of the operating state; means for transmitting to the UE a grant indicating scheduled time-frequency resources for the channel; means for transmitting an instance of said preemption indication; means for determining a remaining portion of the identified time-frequency resource based at least in part on the instance of the preemption indication and the priority of the channel; and means for communicating with the UE using the remaining portion of the time-frequency resources.

42. 42. The apparatus of claim 41, wherein the preemption indication comprises an uplink cancellation indication.

43. means for determining a set of time frequency resources of the identified time frequency resources scheduled for the channel, the set of time frequency resources not overlapping with the remaining portion of the time frequency resources; and means for refraining from monitoring the set of time-frequency resources for uplink messages from the UE based at least in part on the uplink cancellation indication.

44. means for determining a set of time-frequency resources for a second channel associated with a second priority different from the priority of the channel, the set of time-frequency resources not overlapping with the remaining portion of the time-frequency resources; and means for monitoring the set of time-frequency resources for the second channel based at least in part on the operating state and the uplink cancellation indication being associated with the priority.

45. means for transmitting a message indicating a set of time-frequency resources for the uplink cancellation indication; and means for transmitting the uplink cancellation indication using the set of time-frequency resources.

46. 42. The apparatus of claim 41, wherein the preemption indication comprises a downlink preemption indication.

47. 47. The apparatus of claim 46, further comprising: means for refraining from transmitting the channel using the time-frequency resource based at least in part on the downlink preemption indication.

48. means for determining a set of time-frequency resources for a second channel associated with a second priority different from the priority of the channel, the set of time-frequency resources not overlapping with the remaining portion of the time-frequency resources; and means for transmitting the second channel using the set of time-frequency resources based at least in part on the operating state and the downlink preemption indication being associated with the priority.

49. means for transmitting a message indicating a set of time-frequency resources for the downlink preemption indication; and means for transmitting the downlink preemption indication using the set of time-frequency resources.

50. 42. The apparatus of claim 41, further comprising: means for configuring the UE to monitor both downlink preemption indications and uplink cancellation indications.

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