Control Resource Set for New Radio

Abstract

Aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration of multiple search space sets for a control resource set (CORESET), the multiple search space sets including one or more of a first type of search space set configured with multiple frequency-domain monitoring positions or a second type of search space set not configured with multiple frequency-domain monitoring positions. The UE may receive physical downlink control channel communications at least in part based on monitoring the multiple search space sets according to determining that the CORESET is associated with a search space set of the same type. Numerous other aspects are described.

Description

[0001] Cross - Reference to Related Applications

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 975,466, titled "CONTROL RESOURCE SET FOR NEW RADIO IN UNLICENSED SPECTRUM", filed on February 12, 2020, and U.S. Non - Provisional Patent Application No. 17 / 248,124, titled "CONTROL RESOURCE SET FOR NEW RADIO", filed on January 11, 2021, which are hereby incorporated by reference in their entirety.

[0003] Field of the Disclosure

[0004] Aspects of the present disclosure generally relate to wireless communications and relate to techniques and apparatus for control resource sets for New Radio in Unlicensed Spectrum (NR - U).

[0005] Background

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

[0007] A wireless communication network may include several base stations (BSs) capable of supporting communication of several user equipments (UEs). The UEs may communicate with the BSs via downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a B - node, gNB, access point (AP), radio head, transmission and reception point (TRP), New Radio (NR) BS, 5G B - node, and so on.

[0008] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipments to communicate at the urban, national, regional, and even global levels. NR (which may also be referred to as 5G) is an enhanced set of the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the downlink (DL), CP-OFDM and / or SC-FDM (e.g., also referred to as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation to improve spectral efficiency, reduce costs, improve services, utilize new spectrums, and better integrate with other open standards. However, as the demand for mobile broadband access continues to grow, there is a need for further improvement of LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that adopt these technologies.

[0009] Overview

[0010] In some aspects, a wireless communication method performed by a user equipment (UE) may include: receiving a configuration of a plurality of search space sets for a control resource set (CORESET), the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency domain monitoring positions or a second type of search space set not configured with a plurality of frequency domain monitoring positions; and receiving physical downlink control channel (PDCCH) communication at least partially based on monitoring the plurality of search space sets in accordance with determining that the CORESET is associated with a search space set of the same type.

[0011] In some aspects, a wireless communication method performed by a base station (BS) may include: transmitting a configuration of a plurality of search space sets for a CORESET, the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency domain monitoring positions or a second type of search space set not configured with a plurality of frequency domain monitoring positions; and transmitting PDCCH communication in the CORESET at least partially based on the CORESET being associated with a search space set of the same type.

[0012] In some aspects, a wireless communication method performed by a UE may include: monitoring a CORESET for PDCCH communication, the CORESET having frequency domain resources in a plurality of resource block sets; and selectively receiving PDCCH communication in the CORESET at least partially based on whether a corresponding listen-before-talk (LBT) operation for the plurality of resource block sets is successful.

[0013] In some aspects, a wireless communication method performed by a BS may include: performing respective LBT operations for a plurality of resource block sets of frequency domain resources including a CORESET; and selectively transmitting PDCCH communication in the CORESET based at least in part on whether the respective LBT operations for the plurality of resource block sets are successful.

[0014] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: receive a configuration for a plurality of search space sets for a CORESET, the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency domain monitoring positions or a second type of search space set not configured with a plurality of frequency domain monitoring positions; and receive PDCCH communication based at least in part on monitoring the plurality of search space sets in accordance with determining that the CORESET is associated with a search space set of the same type.

[0015] In some aspects, a BS for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: transmit a configuration for a plurality of search space sets for a CORESET, the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency domain monitoring positions or a second type of search space set not configured with a plurality of frequency domain monitoring positions; and transmit PDCCH communication in the CORESET based at least in part on the CORESET being associated with a search space set of the same type.

[0016] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: monitor a CORESET for PDCCH communication, the CORESET having frequency domain resources in a plurality of resource blocks; and selectively receive PDCCH communication in the CORESET based at least in part on whether the respective LBT operations for the plurality of resource blocks are successful.

[0017] In some aspects, a BS for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: perform respective LBT operations for a plurality of resource block sets of frequency domain resources including a CORESET; and selectively transmit PDCCH communication in the CORESET based at least in part on whether the respective LBT operations for the plurality of resource block sets are successful.

[0018] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to: receive a configuration of a plurality of search space sets for a CORESET, the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency-domain monitoring positions or a second type of search space set not configured with a plurality of frequency-domain monitoring positions; and receive PDCCH communication at least in part based on determining that the CORESET is associated with a search space set of the same type by monitoring the plurality of search space sets.

[0019] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a BS, the one or more instructions may cause the one or more processors to: transmit a configuration of a plurality of search space sets for a CORESET, the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency-domain monitoring positions or a second type of search space set not configured with a plurality of frequency-domain monitoring positions; and transmit PDCCH communication in the CORESET at least in part based on the CORESET being associated with a search space set of the same type.

[0020] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to: monitor a CORESET for PDCCH communication, the CORESET having frequency-domain resources in a plurality of resource block sets; and selectively receive PDCCH communication in the CORESET at least in part based on whether a respective LBT operation for the plurality of resource block sets is successful.

[0021] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a BS, the one or more instructions may cause the one or more processors to: perform a respective LBT operation for a plurality of resource block sets including the frequency-domain resources of a CORESET; and selectively transmit PDCCH communication in the CORESET at least in part based on whether a respective LBT operation for the plurality of resource block sets is successful.

[0022] In some aspects, a device for wireless communication may include: means for receiving a configuration of a plurality of search space sets for a CORESET, the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency-domain monitoring positions or a second type of search space set not configured with a plurality of frequency-domain monitoring positions; and means for receiving PDCCH communications based at least in part on monitoring the plurality of search space sets, in accordance with determining that the CORESET is associated with a search space set of the same type.

[0023] In some aspects, a device for wireless communication may include: means for transmitting a configuration of a plurality of search space sets for a CORESET, the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency-domain monitoring positions or a second type of search space set not configured with a plurality of frequency-domain monitoring positions; and means for transmitting PDCCH communications in the CORESET based at least in part on the CORESET being associated with a search space set of the same type.

[0024] In some aspects, a device for wireless communication may include: means for monitoring a CORESET for PDCCH communications, the CORESET having frequency-domain resources in a plurality of resource block sets; and means for selectively receiving PDCCH communications in the CORESET based at least in part on whether a respective LBT operation for the plurality of resource block sets is successful.

[0025] In some aspects, a device for wireless communication may include: means for performing respective LBT operations for a plurality of resource block sets including the frequency-domain resources of a CORESET; and means for selectively transmitting PDCCH communications in the CORESET based at least in part on whether the respective LBT operations for the plurality of resource block sets are successful.

[0026] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems substantially as described herein with reference to the figures and the specification and as illustrated in the figures and the specification.

[0027] The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with this disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both as to their organization and method of operation, as well as associated advantages, will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the drawings is provided for the purpose of illustration and description, and is not to be construed as limiting the definition of the claims. Brief Description of the Drawings

[0029] To enable a more particular understanding of the features described above in accordance with this disclosure, reference may be had to the aspects, some of which are illustrated in the drawings. It should be noted, however, that the drawings illustrate only certain typical aspects of this disclosure and are not to be considered as limiting its scope, for the description may admit to other equally effective aspects. Like reference numerals in the different drawings may identify the same or similar elements.

[0030] Figure 1 is a block diagram illustrating an example of a wireless communication network in accordance with various aspects of this disclosure.

[0031] Figure 2 is a block diagram illustrating an example of a base station (BS) and a user equipment (UE) in communication in a wireless communication network in accordance with various aspects of this disclosure.

[0032] Figure 3 is a diagram illustrating an example of a control resource set (CORESET) structure.

[0033] Figures 4 - 5 is a diagram illustrating an example of a CORESET for new radio in accordance with various aspects of this disclosure.

[0034] Figure 6 is a diagram illustrating an example of a process, such as may be performed by a UE, in accordance with various aspects of this disclosure.

[0035] Figure 7 is a diagram illustrating an example of a process, such as may be performed by a BS, in accordance with various aspects of this disclosure.

[0036] Figure 8 is a diagram illustrating an example of a process, such as may be performed by a UE, in accordance with various aspects of this disclosure.

[0037] Figure 9 is a diagram illustrating an example of a process, such as may be performed by a BS, in accordance with various aspects of this disclosure.

[0038] Detailed Description

[0039] Aspects of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings. However, the present disclosure may be implemented in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of the present disclosure. For example, any number of the aspects set forth herein may be used to implement an apparatus or practice a method. Additionally, the scope of the present disclosure is intended to cover such apparatus or methods practiced using other structures, functionality, or a combination of structures and functionality that complement or are additional to the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be implemented by one or more elements of a claim.

[0040] Certain aspects of a telecommunications system will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in detail hereinafter and illustrated in the drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

[0041] It should be noted that although aspects may be described herein using terminology typically associated with 3G and / or 4G wireless technologies, aspects of the present disclosure may be applied in communication systems based on other generations, such as 5G and later generations, including NR technology.

[0042] Figure 1 FIG. 11 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include several BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmission reception point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to the coverage area of a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0043] A BS can provide communication coverage for macro cells, pico cells, femto cells, and / or another type of cell. A macro cell can cover a relatively large geographical area (e.g., with a radius of several kilometers) and can allow unconstrained access by UEs with service subscriptions. A pico cell can cover a relatively small geographical area and can allow unconstrained access by UEs with service subscriptions. A femto cell can cover a relatively small geographical area (e.g., a residence) and can allow constrained access by UEs associated with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG)). A BS for a macro cell can be referred to as a macro BS. A BS for a pico cell can be referred to as a pico BS. A BS for a femto cell can be referred to as a femto BS or a home BS. In Figure 1 the example shown in, BS 110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "B node", "5G NB", and "cell" can be used interchangeably herein.

[0044] In some aspects, a cell may not have to be stationary, and the geographical area of a cell can move according to the location of a mobile BS. In some aspects, BSs can be interconnected with each other and / or interconnected to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as direct physical connections, virtual networks, and / or analogs using any suitable transport network.

[0045] The wireless network 100 can also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send the transmission of the data to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay transmissions for other UEs. In Figure 1 the example shown in, relay station 110d can communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay station can also be referred to as a relay BS, a relay base station, a relay, etc.

[0046] The wireless network 100 can be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0047] The network controller 130 can be coupled to the set of BSs and can provide coordination and control for these BSs. The network controller 130 can communicate with each BS via a backhaul. These BSs can also communicate with each other directly or indirectly via a wireless or wired backhaul.

[0048] UEs 120 (e.g., 120a, 120b, 120c) can be dispersed throughout the wireless network 100, and each UE can be stationary or mobile. UEs can also be referred to as access terminals, terminals, mobile stations, subscriber units, stations, and so on. A UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, a superbook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0049] Some UEs may be considered machine type communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to a network (e.g., a wide area network such as the Internet or a cellular network) or provide connectivity to the network, for example, via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, and / or may be implemented as narrowband IoT (NB-IoT) devices. Some UEs may be considered customer premise equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, etc. In some aspects, the processor component and the memory component may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., a memory) may be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, etc.

[0050] Generally, any number of wireless networks may be deployed in a given geographical area. Each wireless network may support a specific radio access technology (RAT) and may operate on one or more frequencies. The RAT may also be referred to as a radio technology, an air interface, etc. The frequency may also be referred to as a carrier, a frequency channel, etc. Each frequency may support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, an NR or 5G RAT network may be deployed.

[0051] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., communicate with each other without using the base station 110 as an intermediary). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), a mesh network, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0052] As indicated above, Figure 1 is provided as an example. Other examples may be different from the example regarding Figure 1 described.

[0053] Figure 2FIG. 200 is a block diagram showing a design 200 of a base station 110 and a UE 120, where the base station 110 and the UE 120 can be Figure 1 one of each base station and one of each UE in. The base station 110 may be equipped with T antennas 234a to 234t, and the UE 120 may be equipped with R antennas 252a to 252r, where generally T≥1 and R≥1.

[0054] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCSs) for the UE at least in part based on the channel quality indicator (CQI) received from each UE, process (e.g., encode and modulate) the data for the UE at least in part based on the MCS selected for each UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRSs)) and synchronization signals (e.g., primary synchronization signals (PSSs) and secondary synchronization signals (SSSs)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and / or reference symbols when applicable, and provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 may process its respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from the modulators 232a to 232t may be transmitted via the T antennas 234a to 234t, respectively. According to various aspects described in more detail below, position coding may be utilized to generate synchronization signals to convey additional information.

[0055] At the UE 120, antennas 252a through 252r may receive downlink signals from the base station 110 and / or other base stations and may provide the received signals to demodulators (DEMOD) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, down-convert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. The MIMO detector 256 may obtain the received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols when applicable, and provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide the decoded data for the UE 120 to the data sink 260, and provide the decoded control information and system information to the controller / processor 280. The channel processor may determine the reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of the UE 120 may be included in a housing.

[0056] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 when applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, the uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 when applicable, and further processed by the receive processor 238 to obtain the decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and provide the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0057] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component(s) may perform one or more techniques associated with a control resource set for NR (e.g., NR in unlicensed spectrum (NR-U)), as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 any other component(s) may perform or direct, for example Figure 6 process 600, Figure 7 process 700, Figure 8 process 800, Figure 9 process 900, and / or the operation of other processes as described herein. The memories 242 and 282 may store data and program code for the base station 110 and the UE 120, respectively. In some aspects, the memory 242 and / or the memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, when the one or more instructions are executed by one or more processors of the base station 110 and / or the UE 120 (e.g., executed directly, or after compilation, conversion, interpretation, etc.), they may perform or direct, for example Figure 6 process 600, Figure 7 process 700, Figure 8 process 800, Figure 9 process 900, and / or the operation of other processes as described herein. In some aspects, executing the instructions may include running the instructions, converting the instructions, compiling the instructions, interpreting the instructions, etc. The scheduler 246 may schedule the UE for data transmission on the downlink and / or uplink.

[0058] In some aspects, the UE 120 may include: means for receiving a configuration of a plurality of search space sets for a CORESET, the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency-domain monitoring positions or a second type of search space set not configured with a plurality of frequency-domain monitoring positions; means for receiving physical downlink control channel (PDCCH) communications based at least in part on monitoring the plurality of search space sets in accordance with determining that the CORESET is associated with the same type of search space set; means for monitoring the CORESET for PDCCH communications, the CORESET having frequency-domain resources in a plurality of resource block sets; means for selectively receiving PDCCH communications in the CORESET based at least in part on whether a corresponding listen-before-talk (LBT) operation for the plurality of resource block sets is successful, etc. In some aspects, such means may include in combination with Figure 2One or more components of the described UE 120, such as the controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and so on.

[0059] In some aspects, the base station 110 may include: means for transmitting configurations of multiple search space sets for a CORESET, the multiple search space sets including one or more of a first type of search space set configured with multiple frequency-domain monitoring positions or a second type of search space set not configured with multiple frequency-domain monitoring positions; means for transmitting PDCCH communications in the CORESET at least in part based on the CORESET being associated with the same type of search space set; means for performing respective LBT operations on multiple resource block sets including the frequency-domain resources of the CORESET; means for selectively transmitting PDCCH communications in the CORESET at least in part based on whether the respective LBT operations for the multiple resource block sets are successful, and so on. In some aspects, such means may include one or more components of the base station 110 described in conjunction with Figure 2 antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and so on.

[0060] As indicated above, Figure 2 is provided as an example. Other examples may be different from the example described with respect to Figure 2 the example described.

[0061] Figure 3 is a diagram illustrating an example 300 of a CORESET structure in accordance with various aspects of the present disclosure. As Figure 3 shown, the CORESET structure 305 may include a CORESET 310 in a bandwidth part (BWP) 315. The CORESET 310 may include a specific RB group each containing six resource blocks (RBs). The specific RB group of the CORESET 310 may be identified by frequency-domain resource parameters (e.g., frequencyDomainResources) configured for the CORESET. The frequency-domain resource parameters may be a bit map that maps the RB group to the CORESET 310 according to an RB grid having a specific offset 320 from the lowest frequency of the BWP 315. As shown, the CORESET 310 may include RBs across multiple RB sets (shown as RB set 0, RB set 1, RB set 2, and RB set 3).

[0062] As Figure 3As shown, the CORESET structure 330 may include a CORESET 335 in the BWP 340. In some aspects, the BWP 315 and the BWP 340 may be the same BWP or different BWPs. As shown, the CORESET 335 may include RBs in an RB set located in a specific bandwidth, such as the LBT bandwidth for NR-U (i.e., the bandwidth in which the transmitter performs the LBT operation before transmission). The CORESET configuration of the CORESET 335 may include the frequency-domain resource parameters and the RB offset parameters (e.g., rb-Offset) described above.

[0063] In some cases, the search space configuration associated with the CORESET 335 may include a frequency-domain monitoring location parameter (e.g., freqMonitorLocations-r16). The frequency-domain monitoring location parameter may be a bit map that identifies the RB set (e.g., one or more of RB set 0, RB set 1, RB set 2, or RB set 3) that will be the frequency-domain monitoring location of the search space. As shown, RB set 0, RB set 2, and RB set 3 may be frequency-domain monitoring locations (e.g., the frequency-domain monitoring location bit map has the value 1011).

[0064] When the frequency-domain monitoring location is configured in the search space configuration, the frequency-domain resource parameters of the CORESET configuration may be interpreted differently than when the frequency-domain monitoring location is not configured. For example, when the frequency-domain monitoring location is configured, the frequency-domain resource parameters of the CORESET configuration may be interpreted as identifying only the RB group in the first RB set (e.g., RB set 0) identified as the frequency-domain monitoring location for the CORESET 335. The RB groups identified by the frequency-domain resource parameters outside the first RB set may be ignored. In addition, the frequency-domain resource parameters may be interpreted as mapping the RB group to the CORESET 335 according to an RB grid that has an offset of 345 (according to the RB offset parameter of the CORESET configuration) from the lowest frequency of the first RB set. The CORESET 335 may include RBs in other RB sets that are identified as the frequency-domain monitoring location according to the RB offset parameter (e.g., RB set 2 and RB set 3) and follow the pattern in which the RB group in the first RB set (e.g., RB set 0) is mapped to the CORESET 335.

[0065] In some radio communication systems, a CORESET may be configured with multiple search space sets (e.g., a CORESET may be associated with multiple search space sets configured for the CORESET). In this case, one or more of the search space sets may be configured with multiple frequency-domain monitoring positions, and one or more of the search space sets may not be configured with multiple frequency-domain monitoring positions. As described above, the frequency-domain resource parameters of the CORESET may be interpreted differently at least in part based on whether the search space set is configured with multiple frequency-domain monitoring positions. In particular, different offsets may be used at least in part based on whether the search space set is configured with multiple frequency-domain monitoring positions, thereby defining different RB grids.

[0066] As a result, channel estimation performed for control channel elements (CCEs) defined according to one particular RB grid may not be applicable to CCEs defined according to another particular RB grid, thereby reducing channel estimation efficiency. In addition, defining CCEs according to multiple different RB grids may increase the complexity of the CCE count for overbooking. Some of the techniques and apparatuses described herein enable search space sets configured for a CORESET to be of the same type, such that these search space sets use the same offset and thereby define the same RB grid.

[0067] In addition, in some radio communication systems, a CORESET may include frequency-domain resources in multiple RB sets, as described above in connection with CORESET structure 305. That is, a CORESET may include frequency-domain resources in multiple LBT bandwidths. In some cases, the corresponding LBT operations for one or more RB sets may succeed, while the corresponding LBT operations for one or more other RB sets may not succeed. As a result, the PDCCH may be partially transmitted (e.g., in the frequency-domain resources of the RB sets associated with successful LBT operations), thereby degrading the performance of the PDCCH. In some of the techniques and apparatuses described herein, the PDCCH for a CORESET in multiple resource blocks is selectively transmitted at least in part based on whether the corresponding LBT operations for the multiple resource blocks sets are successful, thereby improving the performance of the PDCCH.

[0068] As indicated above, Figure 3 is provided as an example. Other examples may be different from the example described with respect to Figure 3 above.

[0069] Figure 4 is a diagram illustrating an example 400 of a CORESET for NR-U in accordance with various aspects of the present disclosure. As Figure 4As shown, UE 120 and BS 110 can communicate in conjunction with PDCCH communication. In some aspects, UE 120 and BS 110 can operate in unlicensed spectrum. For example, UE 120 and BS 110 can operate in NR-U.

[0070] As indicated by reference numeral 405, BS 110 can transmit and UE 120 can receive a CORESET configuration (e.g., via radio resource control (RRC) signaling). The CORESET configuration can identify the resources (e.g., RBs) included in the CORESET for UE 120.

[0071] As indicated by reference numeral 410, BS 110 can transmit and UE 120 can receive one or more search space set configurations (e.g., via RRC signaling). That is, BS 110 can configure one or more search space sets for the CORESET (e.g., the CORESET can be associated with one or more search space sets). In some aspects, the search space sets of the CORESET can be of the same type. The first type of search space set can be configured with multiple frequency domain monitoring positions (e.g., the configuration of the search space set can include a frequency domain monitoring position parameter (freqMonitorLocations-r16)). The second type of search space set can not be configured with multiple frequency domain monitoring positions (e.g., the configuration of the search space set can not include a frequency domain monitoring position parameter (freqMonitorLocations-r16)).

[0072] Thus, all search space sets can be configured with multiple frequency domain monitoring positions, or all search space sets can not be configured with multiple frequency domain monitoring positions. In addition, since they are of the same type, all search space sets can be on the same RB grid. In this way, UE 120 can, for example, determine that the search space sets configured for the CORESET will be of the same type and include CCEs according to the same RB grid when receiving the CORESET configuration.

[0073] As indicated by reference numeral 415, BS 110 can transmit one or more PDCCHs to UE on one or more PDCCH candidates of the search space set, and UE 120 can monitor the search space set for the one or more PDCCHs. For example, UE 120 can perform channel estimation on the CCEs of the CORESET when monitoring the search space set. Since the search space sets are of the same type, UE 120 can perform channel estimation with improved efficiency.

[0074] As indicated above, Figure 4 is provided as an example. Other examples can be different from the examples described with respect to Figure 4 above.

[0075] Figure 5 FIG. 500 is a diagram illustrating an example 500 of a CORESET for NR-U according to various aspects of the present disclosure. As Figure 5 shown, UE 120 and BS 110 may communicate in conjunction with PDCCH communication. In some aspects, UE 120 and BS 110 may operate in unlicensed spectrum. For example, UE 120 and BS 110 may operate in NR-U.

[0076] As indicated by reference numeral 505, BS 110 may transmit and UE 120 may receive a CORESET configuration (e.g., via RRC signaling). The CORESET configuration may identify resources (e.g., RBs) included in the CORESET for UE 120. Accordingly, UE 120 may monitor the CORESET for PDCCH communication from BS 110 according to the CORESET configuration.

[0077] In some aspects, the frequency-domain resources of the CORESET may be in multiple RB sets. The multiple RB sets may be in respective LBT bandwidths (i.e., the bandwidths in which BS 110 performs an LBT operation before transmitting). For example, the first RB set may be in the first LBT bandwidth, the second RB set may be in the second LBT bandwidth, and so on. In some aspects, the RB sets may be configured without guard bands between the RB sets (e.g., adjacent RB sets may have a guard band setting of zero value).

[0078] As indicated by reference numeral 510, BS 110 may perform respective LBT operations for multiple RB sets including the frequency-domain resources of the CORESET. For example, BS 110 may perform a first LBT operation for the first RB set and a second LBT operation for the second RB set, and so on. BS 110 may use the LBT operation to determine whether the frequency-domain resources of the RB set (e.g., a channel) are idle for transmission by BS 110 (e.g., when the energy measurement of the resource meets a threshold, the resource is idle). If BS 110 performs an LBT operation on the frequency-domain resources of the RB set and the resource is idle, this may be considered a successful LBT operation. If BS 110 performs an LBT operation on the frequency-domain resources of the RB set and the resource is not idle, this may be considered an unsuccessful LBT operation.

[0079] As indicated by reference numeral 515, the BS 110 may selectively transmit PDCCH communications in the CORESET and the UE 120 may selectively receive PDCCH communications in the CORESET, at least in part based on whether the respective LBT operations for multiple resource block sets are successful. In some aspects, when all LBT operations are successful, the BS 110 may capture a transmission opportunity in the multiple RB sets and may transmit PDCCH communications during the transmission opportunity. In some aspects, when at least one LBT operation is unsuccessful, the BS 110 may not transmit PDCCH communications. In this way, partial transmissions of PDCCH communications can be avoided, thereby improving the performance of PDCCH communications.

[0080] As indicated above, Figure 5 is provided as an example. Other examples may be different from the example Figure 5 described herein.

[0081] Figure 6 is a diagram illustrating an example process 600 performed by a UE, for example, in accordance with various aspects of the present disclosure. The example process 600 is an example of operations performed by a UE (e.g., UE 120, etc.) associated with a CORESET for NR.

[0082] As shown in Figure 6 In some aspects, process 600 may include receiving a configuration of multiple search space sets for a CORESET, the multiple search space sets including one or more of a first type of search space set configured with multiple frequency-domain monitoring positions or a second type of search space set not configured with multiple frequency-domain monitoring positions (block 610). For example, the UE (e.g., using the controller / processor 280, etc.) may receive a configuration of multiple search space sets for a CORESET, as described above. In some aspects, the multiple search space sets include one or more of a first type of search space set configured with multiple frequency-domain monitoring positions or a second type of search space set not configured with multiple frequency-domain monitoring positions.

[0083] As Figure 6 further shown in, in some aspects, process 600 may include receiving PDCCH communications at least in part based on monitoring the multiple search space sets according to determining that the CORESET is associated with the same type of search space set (block 620). For example, the UE (e.g., using the antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may receive PDCCH communications at least in part based on monitoring the multiple search space sets according to determining that the CORESET is associated with the same type of search space set, as described above.

[0084] The process 600 may include additional aspects, such as any individual aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0085] In a first aspect, the plurality of search space sets of the CORESET are not configured with a plurality of frequency-domain monitoring positions.

[0086] In a second aspect, one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions.

[0087] In a third aspect, one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions, and one or more of the plurality of search space sets are not configured with a plurality of frequency-domain monitoring positions.

[0088] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the CORESET is configured with a resource block offset.

[0089] In a fifth aspect, alone or in combination with one or more of the first to third aspects, the CORESET is not configured with a resource block offset.

[0090] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the UE operates in unlicensed spectrum.

[0091] Although Figure 6 example blocks of process 600 are shown, in some aspects, process 600 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to the blocks depicted in Figure 6 . Additionally or alternatively, two or more blocks of process 600 may be executed in parallel.

[0092] Figure 7 is a diagram illustrating an example process 700, such as performed by a BS, in accordance with various aspects of the present disclosure. Example process 700 is an example of operations performed by a BS (e.g., BS 110, etc.) associated with a CORESET for NR.

[0093] As in Figure 7As shown, in some aspects, process 700 may include transmitting a configuration of a plurality of search space sets for a CORESET, the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency domain monitoring positions or a second type of search space set not configured with a plurality of frequency domain monitoring positions (block 710). For example, a BS (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may transmit a configuration of a plurality of search space sets for a CORESET, as described above. In some aspects, the plurality of search space sets includes one or more of a first type of search space set configured with a plurality of frequency domain monitoring positions or a second type of search space set not configured with a plurality of frequency domain monitoring positions.

[0094] As Figure 7 As further shown, in some aspects, process 700 may include transmitting PDCCH communications in the CORESET at least in part based on the CORESET being associated with a search space set of the same type (block 720). For example, a BS (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may transmit PDCCH communications in the CORESET at least in part based on the CORESET being associated with a search space set of the same type, as described above.

[0095] Process 700 may include additional aspects, such as any individual aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0096] In a first aspect, the plurality of search space sets of the CORESET are not configured with a plurality of frequency domain monitoring positions.

[0097] In a second aspect, one or more of the plurality of search space sets are configured with a plurality of frequency domain monitoring positions.

[0098] In a third aspect, one or more of the plurality of search space sets are configured with a plurality of frequency domain monitoring positions, and one or more of the plurality of search space sets are not configured with a plurality of frequency domain monitoring positions.

[0099] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the CORESET is configured with a resource block offset.

[0100] In a fifth aspect, alone or in combination with one or more of the first to third aspects, the CORESET is not configured with a resource block offset.

[0101] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the UE operates in unlicensed spectrum.

[0102] Although Figure 7 example boxes of process 700 are shown, in some aspects, process 700 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently compared to those depicted in Figure 7 . Additionally or alternatively, two or more boxes of process 700 may be executed in parallel.

[0103] Figure 8 is a diagram illustrating an example process 800, such as may be performed by a UE, in accordance with various aspects of the present disclosure. Example process 800 is an example of operations performed by a UE (e.g., UE 120, etc.) associated with a CORESET for NR.

[0104] As shown in Figure 8 , in some aspects, process 800 may include monitoring a CORESET for PDCCH communications, the CORESET having frequency domain resources in a plurality of resource block sets (block 810). For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may monitor a CORESET for PDCCH communications, the CORESET having frequency domain resources in a plurality of resource block sets, as described above.

[0105] As further shown in Figure 8 , in some aspects, process 800 may include selectively receiving PDCCH communications in the CORESET (block 820) at least in part based on whether a respective LBT operation for the plurality of resource block sets was successful. For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may selectively receive PDCCH communications in the CORESET at least in part based on whether a respective LBT operation for the plurality of resource block sets was successful, as described above.

[0106] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0107] In a first aspect, the UE operates in unlicensed spectrum. In a second aspect, alone or in combination with the first aspect, a plurality of resource block sets are within a respective LBT bandwidth.

[0108] In a third aspect, alone or in combination with one or more of the first and second aspects, PDCCH communication is received when all LBT operations are successful. In a fourth aspect, alone or in combination with one or more of the first to third aspects, PDCCH communication is not received when at least one LBT operation is unsuccessful.

[0109] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, a plurality of resource block sets are configured without a guard band between the resource block sets.

[0110] Although Figure 8 example blocks of process 800 are shown, in some aspects, process 800 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently compared to the blocks depicted in Figure 8 . Additionally or alternatively, two or more blocks of process 800 may be executed in parallel.

[0111] Figure 9 is a diagram illustrating an example process 900, such as performed by a BS, in accordance with various aspects of the present disclosure. Example process 900 is an example of operations performed by a BS (e.g., BS 110, etc.) associated with a CORESET for NR.

[0112] As shown in Figure 9 , in some aspects, process 900 may include performing respective LBT operations (block 910) for a plurality of resource block sets for a frequency domain resource including a CORESET. For example, a BS (e.g., using controller / processor 240, etc.) may perform respective LBT operations for a plurality of resource block sets for a frequency domain resource including a CORESET, as described above.

[0113] As further shown in Figure 9 , in some aspects, process 900 may include selectively transmitting PDCCH communication in the CORESET (block 920) at least in part based on whether the respective LBT operations for the plurality of resource block sets are successful. For example, a BS (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may selectively transmit PDCCH communication in the CORESET at least in part based on whether the respective LBT operations for the plurality of resource block sets are successful, as described above.

[0114] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0115] In a first aspect, the BS operates in an unlicensed spectrum. In a second aspect, individually or in combination with the first aspect, the plurality of resource block sets are within respective LBT bandwidths.

[0116] In a third aspect, individually or in combination with one or more of the first and second aspects, PDCCH communication is transmitted when all LBT operations are successful. In a fourth aspect, individually or in combination with one or more of the first to third aspects, PDCCH communication is not transmitted when at least one LBT operation is unsuccessful.

[0117] In a fifth aspect, individually or in combination with one or more of the first to fourth aspects, the plurality of resource block sets are configured without a guard band between the resource block sets.

[0118] Although Figure 9 example blocks of process 900 are shown, in some aspects, process 900 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to the blocks depicted in Figure 9 . Additionally or alternatively, two or more blocks of process 900 may be executed in parallel.

[0119] An overview of some aspects of the present disclosure is provided below:

[0120] Aspect 1: A wireless communication method performed by a user equipment (UE), comprising: receiving a configuration of a plurality of search space sets for a control resource set (CORESET), the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency domain monitoring positions or a second type of search space set not configured with a plurality of frequency domain monitoring positions; and receiving physical downlink control channel (PDCCH) communication based at least in part on monitoring the plurality of search space sets based on determining that the CORESET is associated with a search space set of the same type.

[0121] Aspect 2: The method of aspect 1, wherein the plurality of search space sets of the CORESET are not configured with a plurality of frequency domain monitoring positions.

[0122] Aspect 3: The method of aspect 1, wherein one or more of the plurality of search space sets are configured with a plurality of frequency domain monitoring positions.

[0123] Aspect 4: The method of aspect 1, wherein one or more of the plurality of search space sets are configured with a plurality of frequency domain monitoring positions and one or more of the plurality of search space sets are not configured with a plurality of frequency domain monitoring positions.

[0124] Aspect 5: The method of any one of aspects 1-4, wherein the CORESET is configured with a resource block offset.

[0125] Aspect 6: The method according to any one of Aspects 1-4, wherein the CORESET is not configured with a resource block offset.

[0126] Aspect 7: The method according to any one of Aspects 1-6, wherein the UE operates in an unlicensed spectrum.

[0127] Aspect 8: A wireless communication method performed by a base station (BS), comprising: transmitting a configuration of a plurality of search space sets for a control resource set (CORESET), the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency-domain monitoring positions or a second type of search space set not configured with a plurality of frequency-domain monitoring positions; and transmitting physical downlink control channel (PDCCH) communication in the CORESET at least in part based on the CORESET being associated with a search space set of the same type.

[0128] Aspect 9: The method according to Aspect 8, wherein the plurality of search space sets of the CORESET are not configured with a plurality of frequency-domain monitoring positions.

[0129] Aspect 10: The method according to Aspect 8, wherein one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions.

[0130] Aspect 11: The method according to Aspect 8, wherein one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions, and one or more of the plurality of search space sets are not configured with a plurality of frequency-domain monitoring positions.

[0131] Aspect 12: The method according to any one of Aspects 8-11, wherein the CORESET is configured with a resource block offset.

[0132] Aspect 13: The method according to any one of Aspects 8-11, wherein the CORESET is not configured with a resource block offset.

[0133] Aspect 14: The method according to any one of Aspects 8-13, wherein the BS operates in an unlicensed spectrum.

[0134] Aspect 15: A wireless communication method performed by a user equipment (UE), comprising: monitoring a control resource set (CORESET) for physical downlink control channel (PDCCH) communication, the CORESET having frequency-domain resources in a plurality of resource block sets; and selectively receiving PDCCH communication in the CORESET at least in part based on whether a corresponding listen-before-talk (LBT) operation for the plurality of resource block sets is successful.

[0135] Aspect 16: The method according to Aspect 15, wherein the UE operates in an unlicensed spectrum.

[0136] Aspect 17: The method according to any one of aspects 15 - 16, wherein the plurality of resource block sets are within the respective LBT bandwidth.

[0137] Aspect 18: The method according to any one of aspects 15 - 17, wherein when all LBT operations are successful, PDCCH communication is received.

[0138] Aspect 19: The method according to any one of aspects 15 - 17, wherein when at least one LBT operation is unsuccessful, PDCCH communication is not received.

[0139] Aspect 20: The method according to any one of aspects 15 - 19, wherein the plurality of resource block sets are configured without a guard band between the resource block sets.

[0140] Aspect 21: A wireless communication method performed by a base station (BS), comprising: performing respective listen - before - talk (LBT) operations for a plurality of resource block sets of a frequency - domain resource including a control resource set (CORESET); and selectively transmitting physical downlink control channel (PDCCH) communication in the CORESET at least in part based on whether the respective LBT operations for the plurality of resource block sets are successful.

[0141] Aspect 22: The method according to aspect 21, wherein the BS operates in an unlicensed spectrum.

[0142] Aspect 23: The method according to any one of aspects 21 - 22, wherein the plurality of resource block sets are within the respective LBT bandwidth.

[0143] Aspect 24: The method according to any one of aspects 21 - 23, wherein when all LBT operations are successful, PDCCH communication is transmitted.

[0144] Aspect 25: The method according to any one of aspects 21 - 23, wherein when at least one LBT operation is unsuccessful, PDCCH communication is not transmitted.

[0145] Aspect 26: The method according to any one of aspects 21 - 25, wherein the plurality of resource block sets are configured without a guard band between the resource block sets.

[0146] Aspect 27: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to perform the method according to one or more of aspects 1 - 7.

[0147] Aspect 28: A device for wireless communication, including a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to execute the method of one or more of Aspects 1-7.

[0148] Aspect 29: A device for wireless communication, including at least one means for executing the method of one or more of Aspects 1-7.

[0149] Aspect 30: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to execute the method of one or more of Aspects 1-7.

[0150] Aspect 31: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a device, cause the device to execute the method of one or more of Aspects 1-7.

[0151] Aspect 32: A device for wireless communication at a device, including: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to execute the method of one or more of Aspects 8-14.

[0152] Aspect 33: A device for wireless communication, including a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to execute the method of one or more of Aspects 8-14.

[0153] Aspect 34: A device for wireless communication, including at least one means for executing the method of one or more of Aspects 8-14.

[0154] Aspect 35: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to execute the method of one or more of Aspects 8-14.

[0155] Aspect 36: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a device, cause the device to execute the method of one or more of Aspects 8-14.

[0156] Aspect 37: A device for wireless communication at a device, including: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to execute the method of one or more of Aspects 15-20.

[0157] Aspect 38: A device for wireless communication, including a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to execute the method of one or more of aspects 15 - 20.

[0158] Aspect 39: A device for wireless communication, including at least one means for executing the method of one or more of aspects 15 - 20.

[0159] Aspect 40: A non - transient computer - readable medium storing code for wireless communication, the code including instructions executable by a processor to execute the method of one or more of aspects 15 - 20.

[0160] Aspect 41: A non - transient computer - readable medium storing an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a device, cause the device to execute the method of one or more of aspects 15 - 20.

[0161] Aspect 42: A means for wireless communication at a device, including: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to execute the method of one or more of aspects 21 - 26.

[0162] Aspect 43: A device for wireless communication, including a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to execute the method of one or more of aspects 21 - 26.

[0163] Aspect 44: A device for wireless communication, including at least one means for executing the method of one or more of aspects 21 - 26.

[0164] Aspect 45: A non - transient computer - readable medium storing code for wireless communication, the code including instructions executable by a processor to execute the method of one or more of aspects 21 - 26.

[0165] Aspect 46: A non - transient computer - readable medium storing an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a device, cause the device to execute the method of one or more of aspects 21 - 26.

[0166] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired through practice of the aspects.

[0167] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented with hardware, firmware, and / or a combination of hardware and software.

[0168] As used herein, depending on the context, meeting a threshold may mean that a value is greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0169] It will be apparent that the systems and / or methods described herein may be implemented in different forms of hardware, firmware, and / or a combination of hardware and software. The actual specific control hardware or software code for implementing these systems and / or methods does not limit the aspects. Thus, the operation and behavior of these systems and / or methods are described herein without reference to specific software code — it being understood that software and hardware can be designed to implement these systems and / or methods at least in part based on the description herein.

[0170] Although specific feature combinations are recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the respective aspects. In fact, many of these features may be combined in ways not specifically recited in the claims and / or not disclosed in the specification. Although each of the dependent claims listed below may directly depend on only one claim, the disclosure of the respective aspects includes each dependent claim in combination with each other claim in this group of claims. A phrase that recites "at least one of" a list of items refers to any combination of those items, including a single member. As an example, "at least one of a, b, or c" is intended to cover: a, b, c, a - b, a - c, b - c, and a - b - c, and any combination with multiple identical elements (e.g., a - a, a - a - a, a - a - b, a - a - c, a - b - b, a - c - c, b - b, b - b - b, b - b - c, c - c, and c - c - c, or any other ordering of a, b, and c).

[0171] The elements, acts, or instructions used herein should not be construed as critical or essential, unless expressly described as such. Also, as used herein, the articles "a" and "an" are intended to include one or more items and may be used interchangeably with "one or more." Additionally, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.) and may be used interchangeably with "one or more." Where only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, the terms "having," "containing," "including," etc. are intended to be open-ended terms. Additionally, the phrase "based on" is intended to mean "at least partially based on," unless otherwise expressly stated.

Claims

1. A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: receive a configuration of a plurality of search space sets for a control resource set (CORESET), the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency-domain monitoring positions or a second type of search space set not configured with a plurality of frequency-domain monitoring positions; and receive physical downlink control channel (PDCCH) communication at least in part based on monitoring the plurality of search space sets according to determining that the CORESET is associated with a search space set of the same type.

2. The UE according to claim 1, wherein the plurality of search space sets of the CORESET are not configured with a plurality of frequency-domain monitoring positions.

3. The UE according to claim 1, wherein one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions.

4. The UE according to claim 1, wherein one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions, and one or more other search space sets of the plurality of search space sets are not configured with a plurality of frequency-domain monitoring positions.

5. The UE according to claim 1, wherein the CORESET is configured with a resource block offset.

6. The UE according to claim 1, wherein the CORESET is not configured with a resource block offset.

7. The UE according to claim 1, wherein the UE operates in an unlicensed spectrum.

8. A wireless communication method performed by a user equipment (UE), comprising: receiving a configuration of a plurality of search space sets for a control resource set (CORESET), the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency-domain monitoring positions or a second type of search space set not configured with a plurality of frequency-domain monitoring positions; and receiving physical downlink control channel (PDCCH) communication at least in part based on monitoring the plurality of search space sets according to determining that the CORESET is associated with a search space set of the same type.

9. The method according to claim 8, wherein the plurality of search space sets of the CORESET are not configured with a plurality of frequency-domain monitoring positions.

10. The method according to claim 8, wherein one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions.

11. The method according to claim 8, wherein one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions, and one or more other search space sets of the plurality of search space sets are not configured with a plurality of frequency-domain monitoring positions.

12. The method according to claim 8, wherein the CORESET is configured with a resource block offset.

13. The method according to claim 8, wherein the CORESET is not configured with a resource block offset.

14. The method according to claim 8, wherein the UE operates in an unlicensed spectrum.

15. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set including: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to perform the following operations: Receiving a configuration of a plurality of search space sets for a control resource set (CORESET), the plurality of search space sets including one or more of a first type of search space set configured with a plurality of frequency-domain monitoring positions or a second type of search space set not configured with a plurality of frequency-domain monitoring positions; And Receiving physical downlink control channel (PDCCH) communications at least in part based on monitoring the plurality of search space sets according to determining that the CORESET is associated with a search space set of the same type.

16. The non-transitory computer-readable medium of claim 15, wherein the plurality of search space sets of the CORESET are not configured with a plurality of frequency-domain monitoring positions.

17. The non-transitory computer-readable medium of claim 15, wherein one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions.

18. The non-transitory computer-readable medium of claim 15, wherein one or more of the plurality of search space sets are configured with a plurality of frequency-domain monitoring positions, and one or more other search space sets of the plurality of search space sets are not configured with a plurality of frequency-domain monitoring positions.

19. The non-transitory computer-readable medium of claim 15, wherein the CORESET is configured with a resource block offset.

20. The non-transitory computer-readable medium of claim 15, wherein the CORESET is not configured with a resource block offset.

21. The non-transitory computer-readable medium of claim 15, wherein the UE operates in an unlicensed spectrum.

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