Monitoring aggregated pdcch interlace enhancements

Abstract

A user equipment (UE) and a base station can be configured to implement interlace enhancement during an aggregated monitoring occasion. In some aspects, the UE can receive control resource set and search space configuration information including enhanced-coverage PDCCH procedure information and interlace enhancement information, the enhanced-coverage PDCCH procedure information identifying an aggregated monitoring occasion of a PDCCH monitoring occasion grouping with repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. Further, the UE can decode signals received on resources for the at least two PDCCH monitoring occasions based on the different interlace parameter configurations for the at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to U.S. Non-Provisional Application No. 17 / 348372, filed June 15, 2021, entitled “PDCCH INTERLEAVING ENHANCEMENT FOR MONITORING AGGREGATION”; and U.S. Provisional Application No. 63 / 039904, filed June 16, 2020, the disclosures of which are incorporated herein by reference in their entirety. Technical Field

[0003] In summary, this disclosure relates to wireless communications, and more specifically, to interleaving enhancement for PDCCH transmissions during Physical Downlink Control Channel (PDCCH) monitoring aggregation mode. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable communication with multiple users by sharing available system resources. 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, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different wireless devices to communicate at the city, country, region, and even global levels. An example telecommunications standard is 5G New Radio (NR). 5G NR is part of the Continuous Mobile Broadband Evolution (CMB) initiative released by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., in the case of the Internet of Things (IoT),) and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology.

[0006] Wireless communications between a user equipment (UE) and a base station can benefit from beamforming. Beam reliability can be necessary to ensure sufficient coverage is provided for unicast channels between the UE and the base station, such as in frequency range 2 (FR2). For example, beam reliability can be impacted for various reasons, such as a narrow beam weakening or being impacted by partial shadowing. Improvements are presented herein to address beam reliability issues for a UE. The improvements can also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. SUMMARY

[0007] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

[0008] An example implementation includes a method of wireless communication at a user equipment (UE), comprising: receiving control resource set and search space configuration information, the control resource set and search space configuration information including enhanced coverage PDCCH procedure information and interleaving enhancement information, the enhanced coverage PDCCH procedure information identifying an aggregated monitoring occasion of a PDCCH monitoring occasion grouping with repetition of a same PDCCH, the interleaving enhancement information indicating different interleaving parameter configurations for at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. The method further includes decoding a signal received on resources for the at least two PDCCH monitoring occasions based on the different interleaving parameter configurations for the at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion.

[0009] Another example implementation includes an apparatus for wireless communication at a user equipment (UE), comprising a memory and a processor in communication with the memory. The processor is configured to receive control resource set and search space configuration information, the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information and interlace enhancement information, the enhanced-coverage PDCCH procedure information identifying an aggregated monitoring occasion of a PDCCH monitoring occasion grouping with a repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. The processor is further configured to decode a signal received on resources for the at least two PDCCH monitoring occasions based on the different interlace parameter configurations for the at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion.

[0010] Another example implementation includes an apparatus for wireless communication at a user equipment (UE), comprising: means for receiving control resource set and search space configuration information, the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information and interlace enhancement information, the enhanced-coverage PDCCH procedure information identifying an aggregated monitoring occasion of a PDCCH monitoring occasion grouping with a repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. The apparatus further includes: means for decoding a signal received on resources for the at least two PDCCH monitoring occasions based on the different interlace parameter configurations for the at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion.

[0011] Another example implementation includes a computer-readable medium comprising stored instructions for wireless communication at a user equipment (UE), the instructions executable by a processor to: receive control resource set and search space configuration information, the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information and interlace enhancement information, the enhanced-coverage PDCCH procedure information identifying an aggregated monitoring occasion of a PDCCH monitoring occasion grouping with repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. The instructions are further executable by the processor to: decode a signal received on resources for the at least two PDCCH monitoring occasions based on the different interlace parameter configurations for the at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion.

[0012] Another example implementation includes a method of wireless communication at a base station, comprising: determining control resource set and search space configuration information, the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information and interlace enhancement information, the enhanced-coverage PDCCH procedure information identifying an aggregated monitoring occasion of a PDCCH monitoring occasion grouping with repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. The method further includes transmitting, to a user equipment (UE), the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information.

[0013] Another example implementation includes an apparatus for wireless communication at a base station, comprising a memory and a processor in communication with the memory. The processor is configured to: determine control resource set and search space configuration information, the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information and interlace enhancement information, the enhanced-coverage PDCCH procedure information identifying an aggregated monitoring occasion of a PDCCH monitoring occasion grouping with repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. The processor is further configured to: transmit, to a user equipment (UE), the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information.

[0014] Another example implementation includes an apparatus for wireless communication at a base station, comprising: means for determining control resource set and search space configuration information, the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information and interlace enhancement information, the enhanced-coverage PDCCH procedure information identifying an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions with repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two of the PDCCH monitoring occasion groupings in the aggregated monitoring occasion. The apparatus further includes means for transmitting, to a user equipment (UE), the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information.

[0015] Another example implementation includes a computer-readable medium comprising stored instructions for wireless communication at a base station, the instructions executable by a processor to: determine control resource set and search space configuration information, the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information and interlace enhancement information, the enhanced-coverage PDCCH procedure information identifying an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions with repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two of the PDCCH monitoring occasion groupings in the aggregated monitoring occasion. The instructions are further executable to: transmit, to a user equipment (UE), the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information.

[0016] To the accomplishment of the foregoing and related ends, one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects can be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network according to some aspects of the disclosure.

[0018] Figure 2A FIG. 2 is a diagram illustrating an example of a first 5G / NR frame.

[0019] Figure 2B FIG. 3 is a diagram illustrating an example of DL channels within a 5G / NR subframe.

[0020] Figure 2C FIG. 4 is a diagram illustrating an example of a second 5G / NR frame.

[0021] Figure 2D FIG. 1 is a diagram illustrating an example of UL channels within a 5G / NR subframe.

[0022] Figure 3 FIG. 2 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.

[0023] Figure 4 FIG. 3 is a diagram illustrating an example of beamforming between a base station and a UE in an access network, in accordance with some aspects of the present disclosure.

[0024] Figure 5 FIG. 4 is a diagram illustrating example aggregated monitoring occasions that are non-overlapping, in accordance with some aspects of the present disclosure.

[0025] Figure 6 FIG. 5 is a diagram illustrating example aggregated monitoring occasions that are overlapping, in accordance with some aspects of the present disclosure.

[0026] Figure 7 FIG. 6 is a diagram illustrating example aggregated monitoring occasions with multiple monitoring occasions in a common slot, in accordance with some aspects of the present disclosure.

[0027] Figure 8 FIG. 7 is a diagram illustrating a PDCCH interleaving enhancement procedure for aggregated monitoring occasions, in accordance with some aspects of the present disclosure.

[0028] Figure 9 FIG. 8 is a communication flow between a base station and a group of UEs that supports a PDCCH interleaving enhancement procedure for aggregated monitoring occasions, in accordance with some aspects of the present disclosure.

[0029] Figure 10 FIG. 9 is a flow diagram illustrating an example method performed by a UE that supports a PDCCH interleaving enhancement procedure for aggregated monitoring occasions, in accordance with some aspects of the present disclosure.

[0030] Figure 11 FIG. 10 is a flow diagram illustrating an example method performed by a base station that supports a PDCCH interleaving enhancement procedure for aggregated monitoring occasions, in accordance with some aspects of the present disclosure. DETAILED DESCRIPTION

[0031] The detailed description set forth below, in connection with the appended drawings and embodiments described therin, is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein can be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, structures and components are shown in block diagram form in order to avoid obscuring the concepts.

[0032] Wireless communications between a user equipment (UE) and a base station can involve beamforming. Beam reliability is a factor that helps ensure that a unicast channel between the UE and the base station is provided with sufficient coverage, such as in a frequency range 2 (FR2). For example, beam reliability can be impacted for various reasons, such as a narrow beam weakening or suffering partial shadowing. Additionally, it is important for the base station to obtain reliable channel state information (CSI) feedback from the UE so that the base station can provide new beam assignments to ensure that the UE can properly connect to the base station. Conditions that impact one UE, such as a narrow projected beam weakening or suffering partial shadowing, can impact a group of UEs that share the same or related refined beams. UEs associated with different refined beams of a wider beam can also suffer similar kinds of beam-related problems. For example, a passing bus can cause fading or blocking for a group of UEs associated with different refined beams in a related time span.

[0033] A base station can transmit a physical downlink control channel (PDCCH) on a control resource set (CORESET). A CORESET can be a set of physical resources within a downlink resource grid on which a PDCCH is transmitted. Information carried by a PDCCH can be referred to as downlink control information (DCI), and this information is mapped to physical resources in units referred to as control channel elements (CCEs). Specifically, a PDCCH channel can be carried by one, two, four, eight, or sixteen CCEs to carry various DCI payload sizes or coding rates. To transmit a PDCCH on a CORESET, each CCE of the PDCCH can be mapped onto multiple resource element groups (REGs) or REG bundles (e.g., a set of two or more REGs) in the CORESET. In some cases, the CCE-to-REG mapping can include block interleaving according to a configured interleaving parameter.

[0034] Further, the base station can transmit repetitions of the PDCCH in an aggregated monitoring occasion to mitigate beam reliability issues and assist the UE in successfully receiving the PDCCH. Each aggregated monitoring occasion can be allocated one or more CCEs. Transmission of the repetitions of the PDCCH in the aggregated monitoring occasion can be referred to as an “enhanced coverage PDCCH” procedure and can effectively generate a virtual CORESET with a larger number of orthogonal frequency-division multiplexing (OFDM) symbols.

[0035] However, in some cases, utilizing the same interleaving parameter for each monitoring occasion in a group of monitoring occasions in an aggregated monitoring occasion when performing CCE-to-REG mapping for the corresponding PDCCH can fail to provide frequency domain diversity across the aggregated monitoring occasion. Thus, in these cases, the transmission reliability and robustness of the enhanced-coverage PDCCH procedure can be limited. Accordingly, aspects presented herein provide PDCCH monitoring aggregation with interleaving enhancement, e.g., for at least two monitoring occasions, and in some aspects for each monitoring occasion, utilizing repetitions of a PDCCH with different interleaving parameters across a group of monitoring occasions in an aggregated monitoring occasion. Such repetitions of the same PDCCH with different interleaving parameters can improve PDCCH reception for a single UE or for a group of UEs that can be suffering from a weak beam or a deteriorating beam by enabling one or more UEs to decode and combine PDCCH information from more than one monitoring occasion.

[0036] More specifically, in general terms, various implementations relate to procedures for PDCCH monitoring with interleaving enhancement. In some aspects, a base station transmits multiple repetitions of a PDCCH in multiple monitoring occasions of an aggregated monitoring occasion, where different interleaving parameter configurations are applied to the PDCCH for at least two monitoring occasions in the aggregated monitoring occasion. Further, a UE can monitor each of the multiple repetitions of the aggregated monitoring occasion and process data received during the monitoring occasions based on control resource set and search space configuration information received from the base station. In some examples, the base station transmits an enhanced-coverage PDCCH procedure activation signal to activate the aggregated monitoring occasion for a group of monitoring occasions at the UE. In some examples, the enhanced-coverage PDCCH procedure activation signal can be a radio resource control (RRC) configuration message including an activation indication, a medium access control (MAC) control element (CE) including the activation signal, a UE-specific downlink control information (DCI) including the activation signal, or a group common DCI including the activation signal. In some examples, the base station determines whether to transmit the enhanced-coverage PDCCH procedure activation signal based at least in part on a frequency band associated with the base station, a size of a control resource set associated with the PDCCH, and / or a subcarrier spacing value. In some examples, a different interleaving parameter is applied to the PDCCH for each monitoring occasion. In some examples, the different interleaving parameter configurations include at least one of a different number of rows used in an interleaving procedure or a different number of cyclic shifts. In some examples, the interleaving parameter configuration applied to the PDCCH can be determined based at least in part on an initial symbol of the corresponding monitoring occasion.

[0037] Particular implementations of the subject matter described in this disclosure can be implemented to provide frequency domain diversity in enhanced coverage PDCCH procedures, ensuring that UEs suffering from beam-related issues will have proper coverage without excessive signaling overhead.

[0038] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, and other examples (collectively referred to as “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0039] By way of example, an element, or any portion of an element, or any combination of elements can be implemented as a “processing system” that includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on a chip (SoC), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system can execute software. Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, among other examples, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0040] In one or more examples, the functions described can be implemented in hardware, software, or any combination thereof. If implemented in software, the functions can be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other medium that is capable of storing computer executable instructions or data structures

[0041] Figure 1is a diagram illustrating an example of a wireless communications system and an access network 100. The wireless communications system (also referred to as a wireless wide area network (WW AN)) includes base stations 102, UEs 104, an Evolved Packet Core (EPC) 160, and another core network 190 (e.g., a 5G Core (5GC)). The base stations 102 can include macro cells (high power cellular base stations) or small cells (low power cellular base stations). The macro cells include base stations. The small cells include femtocells, picocells, and microcells.

[0042] The base stations 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with the EPC 160 through first backhaul links 132 (e.g., S I interface). The base stations 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with the core network 190 through second backhaul links 184. In addition to other functions, the base stations 102 can perform one or more of the following functions: transfer of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection setup and release, load balancing, distribution for non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment trace, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 can communicate directly or indirectly (e.g., through the EPC 160 or core network 190) with each other via third backhaul links 134 (e.g., X2 interface). The third backhaul links 134 can be wired or wireless.

[0043] The base stations 102 can wirelessly communicate with the UEs 104. Each of the base stations 102 can provide communication coverage for a respective geographic coverage area 110. There can be overlapping geographic coverage areas 110. For example, a small cell 102a can have a coverage area 110a that overlaps with one or more macrocells 102b. A network that includes both small cell and macrocells can be known as a heterogeneous network. A heterogeneous network can also include Home Evolved Node Bs (eNBs) (HeNBs), which can provide service to a restricted group known as a closed subscriber group (CSG). The communication links 120 between the base stations 102 and the UEs 104 can include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to a base station 102 or downlink (DL) (also referred to as forward link) transmissions from a base station 102 to a UE 104. The communication links 120 can use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, or transmit diversity. The communication links can be through one or more carriers, and each carrier can be a band of frequency waves having a predetermined width and can be used to transmit data between base stations 102 and UEs 104. The base stations 102 / UEs 104 can use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, among others) in each direction (uplink or downlink). The base stations 102 / UEs 104 can use spectrum of

[0044] Some UEs 104 can communicate with other UEs 104 using device-to-device (D2D) communication link 158. The D2D communication link 158 can use DL / UL WWAN spectrum. The D2D communication link 158 can use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communication can be through a variety of wireless D2D communications systems, such as for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE 802.11 standards, LTE, or NR.

[0045] The wireless communications system can also include a Wi-Fi access point (AP) 150 in communication with Wi-Fi stations (STAs) 152 via communication links 154 in a 5 GHz unlicensed frequency spectrum. When communicating in an unlicensed frequency spectrum, the STAs 152 / AP 150 can perform clear channel assessment (CCA) prior to communicating to determine whether the channel is available.

[0046] The small cells 102a can operate in a licensed and / or an unlicensed spectrum. When operating in an unlicensed spectrum, the small cells 102a can employ NR and use the same 5 GHz unlicensed spectrum as Wi-Fi APs 150. The small cells 102a employing NR in an unlicensed spectrum can boost coverage or increase capacity for access networks.

[0047] A base station 102, whether a small cell 102a or a large cell (e.g., macro base station), can include and / or be referred to as an eNB, gNodeB (gNB), or another type of base station. Some base stations, such as gNB 180 can operate in one or more frequency bands in the electromagnetic spectrum. The electromagnetic spectrum is often subdivided based on frequency / wavelength into various classes, bands, channels, and so forth. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz - 7. 125 GHz) and FR2 (24.25 GHz - 52.6 GHz). Frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. A similar naming anomaly exists for FR2, which is often referred to (interchangeably) as a “millimeter wave” band, despite being different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) which is also referred to as a “millimeter wave” band by the International Telecommunications Union (ITU).

[0048] With the above in mind, unless specifically stated otherwise, it should be appreciated that the term “sub-6 GHz,” or the like, can refer broadly to frequencies that are less than 6 GHz, can be within FR1, or can include mid-band frequencies. Also, unless specifically stated otherwise, it should be appreciated that the term “millimeter wave,” or the like, can refer broadly to frequencies that can include mid-band frequencies, can be within FR2, or can be within an EHF band. Communications using the mmW radio frequency band have extremely high path loss and a short range. The mmW base station 180 can utilize beamforming 182 with the UE 104 to compensate for the path loss and the short range. The base station 180 and the UE 104 can each include a plurality of antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0049] The base station 180 can transmit a beamformed signal to the UE 104 in one or more transmit directions 182a. The UE 104 can receive the beamformed signal from the base station 180 in one or more receive directions 182b. The UE 104 can also transmit a beamformed signal to the base station 180 in one or more transmit directions. The base station 180 can receive the beamformed signal from the UE 104 in one or more receive directions. The base station 180 / UE 104 can perform beam training to determine the best receive and transmit directions for each of the base station 180 / UE 104. The transmit and receive directions for the base station 180 can or can not be the same. The transmit and receive directions for the UE 104 can or can not be the same.

[0050] The EPC 160 can include a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 can be in communication with a home subscriber server (HSS) 174. The MME 162 is the control node that processes the signaling between the UEs 104 and the EPC 160. Generally, the MME 162 provides bearer and connection management. All user Internet protocol (IP) packets are transferred through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides UE IP address allocation as well as other functions. The PDN gateway 172 and the BM-SC 170 are connected to the IP services 176. The IP services 176 can include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, or other IP services. The BM-SC 170 can provide functions for MBMS user service provisioning and

[0051] The core network 190 can include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. The AMF 192 can be in communication with a unified data management (UDM) 196. The AMF 192 is the control node that processes the signaling between the UEs 104 and the core network 190. Generally, the AMF 192 provides QoS flow and session management. All user Internet protocol (IP) packets are transferred through the UPF 195. The UPF 195 provides UE IP address allocation as well as other functions. The UPF 195 is connected to the IP services 197. The IP services 197 can include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, or other IP services.

[0052] A base station can also include or be referred to as a gNB, NodeB, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmit reception point (TRP), or some other suitable terminology. A base station 102 provides an access point to the EPC 160 or core network 190 for a UE 104. Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similar functional device. Some of the UEs 104 can be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicle, heart monitor, and so on). The UE 104 can also be referred to as a station, a mobile, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0053] In some aspects of the disclosure, one or more UEs 104 can include a PDCCH monitoring component 140 configured to enable the UE 104 to initiate an enhanced-coverage PDCCH procedure and correctly process repetitions of PDCCHs with different interleaving configurations in an aggregated monitoring occasion. For example, the PDCCH monitoring component 140 can be configured to receive CORESET and search space configuration information from a base station 102 / 180. In some aspects, the CORESET and search space configuration can include enhanced-coverage PDCCH procedure information identifying an aggregated monitoring occasion and interleaving enhancement information indicating different interleaving parameter configurations for individual PDCCH monitoring occasions in the aggregated monitoring occasion. Further, the PDCCH monitoring component 140 can be configured to receive an enhanced-coverage PDCCH procedure activation signal to activate monitoring of PDCCHs associated with the aggregated monitoring occasion and decode signals received on resources during individual PDCCH monitoring occasions in the aggregated monitoring occasion based on the interleaving parameter configurations associated with the respective PDCCH monitoring occasions.

[0054] In some aspects, the base station 102 / 180 can include a PDCCH management component 198 configured to generate CORESET and search space configuration information and transmit the CORESET or search space configuration information to one or more UEs 104. Further, the PDCCH management component 198 can be configured to apply different interleaving parameters to the PDCCH for at least two PDCCH monitoring occasions, or in some aspects, for each PDCCH monitoring occasion, in an aggregated monitoring occasion when transmitting the same PDCCH to the one or more UEs 104.

[0055] Although the following description can be focused on 5G NR, the concepts described herein can be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0056] Figures 2A-2D Example diagrams 200, 230, 250, and 280 are included that illustrate example structures that can be used for wireless communication by base stations 102 and UEs 104 (e.g., for 5G NR communications). Figure 2A FIG. 200 is an example diagram illustrating a first subframe within a 5G / NR frame structure. Figure 2B FIG. 230 is an example diagram illustrating DL channels within a 5G / NR subframe. Figure 2C FIG. 250 is an example diagram illustrating a second subframe within a 5G / NR frame structure. Figure 2D FIG. 280 is an example diagram illustrating UL channels within a 5G / NR subframe. The 5G / NR frame structure can be FDD (where subframes within a particular set of subcarriers (carrier system bandwidth) are dedicated for either DL or UL) or TDD (where subframes within a particular set of subcarriers (carrier system bandwidth) are dedicated for both DL and UL). In Figure 2A 、 Figure 2CIn the examples provided, a 5G / NR frame structure is assumed to be TDD with subframe 4 configured with slot format 28 (with most as DL), where D is DL, U is UL, and X is flexible to use between DL / UL, and subframe 3 configured with slot format 34 (with most as UL). While subframes 3, 4 are shown with slot formats 34, 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, all UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with a slot format (dynamically through DL control information (DCI) or semi-statically / statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI). It should be noted that the description given herein also applies to a 5G / NR frame structure that is TDD.

[0057] Other wireless communication technologies can have different frame structures or different channels. A frame (10 ms) can be divided into 10 equally sized subframes (1 ms). Each subframe can include one or more slots. A subframe can also include mini-slots, which can contain 7, 4, or 2 symbols. Each slot can contain 7 or 14 symbols, depending on the slot configuration. For slot configuration 0, each slot can contain 14 symbols, while for slot configuration 1, each slot can contain 7 symbols. Symbols on the DL can be cyclic prefix (CP) OFDM (CP-OFDM) symbols. Symbols on the UL can be CP-OFDM symbols (for high throughput scenarios) or Discrete Fourier Transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also known as single carrier frequency division multiple access (SC-FDMA) symbols) (for power limited scenarios; limited to single stream transmission). The number of slots within a subframe can be based on the slot configuration and the numerology. For slot configuration 0, different numerologies m0to 5 allow for 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different numerologies 0 to 2 allow for 2, 4, and 8 slots per subframe, respectively. For slot configuration 0 and numerology m, there are 14 symbols / slot and 2 μ slots / subframe. The subcarrier spacing and symbol length / duration are a function of the numerology. The subcarrier spacing can equal 2 μ * 15 kHz, where m is the numerology 0 to 5. Thus, numerology m = 0 has a subcarrier spacing of 15 kHz, and numerology m = 5 has a subcarrier spacing of 480 kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figures 2A-2DAn example is provided of a slot configuration 0 with 14 symbols per slot and a numerology μ = 0 with 1 slot per subframe. The subcarrier spacing is 15 kHz, and the symbol duration is approximately 66.7 μs.

[0058] A resource grid can be used to represent the frame structure. Each time slot includes resource blocks (RBs) (also referred to as physical RBs (PRBs)) that extend for the full duration of the time slot in the frequency domain. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0059] As shown in Figure 2A Some of the REs carry reference (pilot) signals (RS) for the UE. The RS can include demodulation RS (DM-RS) (indicated as R for one particular configuration) and channel state information RS (CSI-RS) for channel estimation at the UE. The RS can also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS). x where 100x is the port number, although other DM-RS configurations are possible) and channel state information reference signals (CSI-RS). The RS can also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0060] Figure 2B An example of various DL channels are shown within a subframe of a frame. The physical downlink control channel (PDCCH) carries DCI within one or multiple CCEs, each CCE including nine RE groups (REGs), each REG including four consecutive REs in one OFDM symbol. The primary synchronization signal (PSS) can be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe / symbol timing and physical layer identity. The secondary synchronization signal (SSS) can be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine a physical cell identifier (PCI). Based on the PCI, the UE can determine the locations of the aforementioned DM-RS. The physical broadcast channel (PBCH), which carries a master information block (MIB), can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block. The MIB provides system bandwidth configuration information and a scheduling of SI (system information) messages. The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH (e.g., system information blocks (SIBs)), and paging messages.

[0061] As shown in Figure 2CAs illustrated, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE can transmit DM-RS for channel estimation for the physical uplink control channel (PUCCH) and for the physical uplink shared channel (PUSCH). The PUSCH DM-RS can be transmitted in the first one or two symbols of a slot. The PUCCH DM-RS can be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used. Although not shown, the UE can transmit sounding reference signals (SRS). The SRS can be used by the base station for channel quality estimation to enable frequency- dependent scheduling on the UL.

[0062] Figure 2D An example of various UL channels within a subframe of a frame is shown. The PUCCH can be positioned as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and HARQ ACK / NACK feedback. The PUSCH carries data, and can additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), or UCI.

[0063] Figure 3is a block diagram of the base station 102 / 180 in communication with the UE 104 in an access network. In the DL, IP packets from the EPC 160 can be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with, e.g., broadcasting of system information (e.g., MIB, SIBs), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter radio access technology (RAT) mobility, and measurement configuration

[0064] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, can include error detection on the transport channels, forward error correction (FEC) coding / decoding of the transport channels, interleaving, rate matching, mapping to physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols can then be split into parallel streams. Each stream can then be mapped to a OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time domain or the frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator 374 can be used to determine the coding and modulation schemes, as well as for spatial processing. The channel estimate can be derived from a reference signal or channel condition feedback transmitted by the UE 104. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can modulate an RF carrier with a respective spatial stream for transmission.

[0065] At the UE 104, each receiver 354RX receives a signal through its respective antenna 352. Each receiver 354RX recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial streams destined for the UE 104. If multiple spatial streams are destined for the UE 104, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal comprises a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 102 / 180. These soft decisions can be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and de-interleaved to recover the data and control signals that were originally transmitted by the base station 102 / 180 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.

[0066] The controller / processor 359 can be associated with a memory 360 that stores program codes and data. The memory 360 can be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using an ACK or NACK protocol to support HARQ operations.

[0067] Similar to the functionality described in connection with the DL transmission by the base station 102 / 180, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression / decompression, and security (ciphering, deciphering, integrity protection, integrity verification); RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0068] The TX processor 368 can use channel estimates provided by the channel estimator 358 to select an appropriate coding and modulation scheme to use for a given transmission and facilitate spatial processing. The spatial streams generated by the TX processor 368 can be provided to different antenna 352 via separate transmitters 354TX. Each transmitter 354TX can modulate an RF carrier with a respective spatial stream for transmission.

[0069] The UL transmission is processed at the base station 102 / 180 in a manner similar to that described in connection with the receiver function at the UE 104. Each receiver 318RX receives a signal through its respective antenna 320. Each receiver 318RX recovers information modulated onto an RF carrier and provides the information to a RX processor 370.

[0070] The controller / processor 375 can be associated with a memory 376 that stores program codes and data. The memory 376 can be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets from the UE 350. IP packets from the controller / processor 375 can be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using an ACK or NACK protocol to support HARQ operations.

[0071] In the UE 104, at least one of the TX processor 368, the RX processor 356, and the controller / processor 359 can be configured to perform aspects related to the PDCCH monitoring component 140 of FIG. 2. Figure 1

[0072] In the base station 102 / 180, at least one of the TX processor 316, the RX processor 370, and the controller / processor 375 can be configured to perform aspects related to the PDCCH management component 198 of FIG. 2. Figure 1

[0073] Figure 4 An example diagram illustrating beamforming 400 between a base station 402 and a UE 404 in an access network, in accordance with some aspects of the present disclosure, is shown. As shown, the base station 402 can transmit signals to the UE 404 in each of a plurality of directions using respective transmit beams 406(1)-(8). Further, the UE 404 can receive signals from the base station 402 using different receive beams 408(1)-(4). The UE 404 can also transmit signals to the base station 402 using different beams in one or more directions. Additionally, the base station 402 can receive signals from the UE 404 in one or more receive directions using one or more beams. Figure 4

[0074] The base station 402 and the UE 404 can perform beam training to determine the best receive and transmit directions for each of the base station 402 and the UE 404. The transmit and receive directions for the base station 402 can or can not be the same. The transmit and receive directions for the UE 404 can or can not be the same. The base station 402 can use the same beam or related beams to transmit communications to a plurality of UEs 404. For example, the base station 402 can use different beams to exchange communications with the UE 404. The base station 402 can provide reference signals to the UE 404, such that the UE 404 can perform a selection of further refinements of the beam pairs 406(1) / 408(1), 406(3) / 408(3), 406(4) / 408(4) based on measurements performed on these signals.​​​

[0075] Under some conditions, a PDCCH message can not be received correctly, which can delay or prevent the UE 404 from receiving control information in the PDCCH and exchanging other communications including data (e.g., via PDSCH) with the base station 402. For example, beam reliability can be impacted for various reasons, such as a narrow beam weakening or suffering partial shadowing. The base station 402 can use channel state information (CSI) feedback from the UE 404 or 406 to determine whether a current beam assignment is reliable and ensure that the UE 404 is able to correctly receive communications from the base station 402. Conditions that impact one UE 404, such as a narrow beam weakening or suffering partial shadowing, can impact some or all of the other UEs in a group of UEs 404 that share the same refined beam or related refined beams. Beam refinement can include using one or more wider beams to select a narrower beam for communication. For example, UEs 404 associated with different refined beams of a wider beam can also suffer from similar types of beam-related problems. For example, a passing vehicle or other moving structure can cause interference, attenuation, or blockage for a group of UEs 404 associated with different refined beams in a related time span.

[0076] The base station 402 can alleviate beam reliability problems by transmitting the PDCCH using an enhanced coverage procedure that involves transmitting multiple repetitions of the PDCCH over an aggregated monitoring occasion. The enhanced PDCCH procedure is also referred to herein as an “enhanced coverage PDCCH” procedure or an “enhanced” PDCCH procedure. However, when transmitting multiple repetitions of the PDCCH, the base station 402 can use the same interleaving parameters, leaving room for improvement in frequency domain diversity over the aggregated monitoring occasion. Aspects presented herein enable the base station 402 to improve transmission reliability and robustness by providing frequency domain diversity via interleaving enhancement.

[0077] The base station 402 can include a PDCCH management component 198, such as described in connection with Figure 1 The PDCCH management component 198 can include an enhanced interleaving component 410 that provides different interleaving configurations for at least two monitoring occasions within an aggregated monitoring occasion to provide frequency diversity in PDCCH transmissions. Further, the PDCCH management component 198 operating the enhanced interleaving component 410 can manage performance of PDCCH monitoring aggregation modes with interleaving enhancement. For example, the PDCCH management component 198 can generate control resource set and search space configuration information that includes enhanced coverage PDCCH procedure information and interleaving enhancement information corresponding to one or more aggregated monitoring occasions, the interleaving enhancement information including an interleaving parameter configuration applied to PDCCH monitoring occasions of the aggregated monitoring occasion.

[0078] As used herein, in some aspects, “control resource set and search space configuration information” can refer to field information used to configure a CORESET and / or a search space. In some aspects, control resource set and search space configuration information can include at least one of: a CCE-to-REG mapping type, a CORESET identifier, duration information, frequency domain resource information, an interleaver size, scrambling information, a REG bundling size, a shift index, a precoder granularity, DCI information, a search space identifier, monitoring information (e.g., periodicity information, offset information, symbol information, etc.), aggregation information, a search space type, search space specificity information, a DCI format, candidate information, etc. As used herein, in some aspects, “enhanced coverage procedure information” can refer to at least one of: an aggregation level or data size, or a duration, a repetition pattern, or other information about an aggregation monitoring occasion, associated with the aggregation monitoring occasion. As used herein, in some aspects, “interleaving parameter configuration” can refer to an interleaving parameter configuration for a PDCCH monitoring occasion associated with an aggregation monitoring occasion.

[0079] Further, the PDCCH management component 198 can transmit an enhanced coverage PDCCH procedure activation signal indicating initiation of an enhanced coverage PDCCH procedure and an enhanced PDCCH procedure deactivation signal indicating termination of the enhanced coverage PDCCH procedure. In some aspects, the enhanced coverage PDCCH procedure activation signal can be an RRC configuration message including an activation indication, a MAC CE including an activation signal, a UE-specific DCI including an activation signal, or a group common DCI including an activation signal. The enhanced coverage PDCCH procedure deactivation signal can be an RRC configuration message including a deactivation indication, a MAC CE including a deactivation signal, a UE-specific DCI including a deactivation signal, or a group common DCI including a deactivation signal.

[0080] Base station 402 may determine to send an enhanced coverage PDCCH procedure activation signal based on one or more of the following: Channel State Information (CSI) received from at least one UE 404 in the group of UEs 404, a quality measurement for at least one UE 404 in the group of UEs 404, or a Hybrid Automatic Repeat Request (HARQ) feedback from at least one UE 404 in the group of UEs 404. For example, base station 402 may have previously received Channel State Information, a quality measurement, or HARQ feedback from another UE and determine to send an enhanced coverage PDCCH procedure activation signal to UE 404 based on that previously received information, measurement, or feedback. Base station 402 may instruct enhanced coverage PDCCH procedures for all search spaces or subsets of search spaces in the group of UEs 404. Additionally, the base station may configure whether to activate the enhanced coverage PDCCH procedure individually for each search space. For example, the base station may configure the enhanced coverage PDCCH monitoring procedure to include one or more of the following: aggregation level or size for PDCCH monitoring, time window, repetition pattern for PDCCH, etc. Alternatively, base station 402 may determine the activation signal for transmitting enhanced coverage PDCCH process based at least in part on the frequency band associated with the base station, the size of the control resource set associated with the PDCCH, and / or the subcarrier spacing value.

[0081] UE 404 may each include a PDCCH monitoring component 140, such as combined with Figure 1 Described. For example... Figure 4 As shown, the PDCCH monitoring component 140 may include a decoding component 412 for decoding and processing PDCCH monitoring time packets within an aggregated monitoring time based on different interleaving parameter configurations for at least two PDCCH monitoring times within the PDCCH monitoring time. For example, the PDCCH monitoring component 140 operating the decoding component 412 may be configured to receive control resource set and search space configuration information, including enhanced coverage PDCCH process information and interleaving enhancement information corresponding to one or more aggregated monitoring times. The interleaving enhancement information includes interleaving parameter configurations applied to the PDCCH monitoring times of the aggregated monitoring times. Additionally, the PDCCH monitoring component 140 may be configured to receive an enhanced coverage PDCCH process activation signal from the base station 402, monitor the same PDCCH on multiple PDCCH candidates according to the aggregated monitoring times, and decode signals received on resources during each PDCCH monitoring time based on different interleaving parameter configurations associated with the corresponding PDCCH monitoring times.

[0082] Under a configured enhanced coverage PDCCH procedure for PDCCH monitoring, base station 402 can transmit an initial transmission of a PDCCH and can repeat the PDCCH transmission as one or more repetitions, thereby repeating the same PDCCH over two or more PDCCH monitoring occasions. The two or more PDCCH monitoring occasions can be grouped together as an aggregated set of monitoring occasions. The same PDCCH can be repeated over PDCCH candidates (e.g., in the same search space and with the same PDCCH candidate index) in the multiple monitoring occasions. Further, each PDCCH can be mapped onto a CORESET using different interleaving parameters, as discussed below with respect to Figure 8 discussed in more detail. For example, in one example of how interleaving can be changed, PDCCH management component 198 operating enhanced interleaving component 410 can perform an interleaving operation using a PDCCH and a first number of rows to determine columns of REG bundles. Additionally, PDCCH management component 198 can apply a first number of cyclic shifts to the columns of REG bundles when mapping the PDCCH to a CORESET for a first monitoring occasion of an aggregated monitoring occasion, and apply a second number of cyclic shifts to the columns of REG bundles when mapping the PDCCH to the CORESET for a second monitoring occasion of the aggregated monitoring occasion. Additionally, UE 404 can employ the interleaving enhancement information to decode the CORESET and obtain the PDCCH. For example, UE 404 can identify an interleaving parameter configuration corresponding to a monitoring occasion of an aggregated monitoring occasion based on a symbol of the monitoring occasion, and use the identified interleaving parameter configuration to de-interleave the CORESET and obtain the PDCCH. In some aspects, an initial symbol of a monitoring occasion can be used as an index to identify a corresponding interleaving parameter configuration.

[0083] Additionally, in one implementation, base station 402 can repeat a PDCCH transmission via a CORESET using different refined beams. In some examples, the different refined beams can each be a sub-beam of a beam corresponding to the transmission of the PDCCH. A sub-beam can refer to a lower level beam in a set of hierarchical beams. For example, a layer 1 (LI) beam can cover multiple L2 beams, each of which can cover multiple L3 beams. In one implementation, the beam corresponding to the transmission of the PDCCH is an L2 beam, and each of the different refined beams can be an L3 beam.

[0084] Each aggregation monitoring occasion can include k consecutive PDCCH monitoring occasions corresponding to the same search space. In some examples, each monitoring occasion can belong to a single aggregation monitoring occasion. For example, aggregation monitoring occasions can be associated with index n and can include monitoring occasions {4n, 4n+1, 4n+2, 4n+3}. In this example, for an aggregation monitoring occasion with n = 0, the monitoring occasions include {0, 1, 2, 3}. For an aggregation monitoring occasion with n = 1, the monitoring occasions include {4, 5, 6, 7}. For an aggregation monitoring occasion with n = 2, the monitoring occasions include {8, 9, 10, 11}. Thus, each individual monitoring occasion belongs to only a single aggregation monitoring occasion, and the monitoring occasions in different aggregation monitoring occasions do not overlap. In some other examples, a single monitoring occasion can belong to multiple aggregation monitoring occasions. For example, aggregation monitoring occasions can be associated with index n and can include monitoring occasions {n, n+1, n+2, n+3}. In this example, for an aggregation monitoring occasion with n = 0, the monitoring occasions include {0, 1, 2, 3}. For an aggregation monitoring occasion with n = 1, the monitoring occasions include {1, 2, 3, 4}. For an aggregation monitoring occasion with n = 2, the monitoring occasions include {2, 3, 4, 5}. Thus, monitoring occasion 2 and monitoring occasion 3 belong to the aggregation monitoring occasions with n = 0, n = 1, and n = 2. Similarly, monitoring occasion 4 belongs to the aggregation monitoring occasions for n = 1 and n = 2.

[0085] Figure 5 FIG. 5 includes an example illustrating a plurality of non-overlapping aggregation monitoring occasions 510 according to some aspects of the disclosure, the aggregation monitoring occasions 510 including respective non-overlapping groupings of monitoring occasions in different aggregation monitoring occasions, where at least two monitoring occasions in each aggregation monitoring occasion have different interleaving parameter configurations. A first aggregation monitoring occasion 512 includes monitoring occasions in slots 520, 522, 524, and 526. The base station 402 can transmit a same PDCCH on one or more of the plurality of monitoring occasions. For example, the base station 402 can transmit a PDCCH on a PDCCH candidate 530 in a CORESET 540 of slot 520 and can transmit repetitions of the PDCCH in PDCCH candidates 532, 534, and 536 in the CORESET 540 of slots 522, 524, and 526. That is, each of the PDCCH candidates 530, 532, 534, and 536 can include the same PDCCH. Although four slots are illustrated, aspects presented herein can apply to aggregation monitoring occasions having any number of consecutive monitoring occasions.

[0086] The second set of aggregated monitoring occasions 514 includes monitoring occasions in slots 527, 528, 529, and 531. The base station 402 can transmit the same PDCCH on one or more of the multiple monitoring occasions. For example, the base station 402 can transmit a PDCCH on PDCCH candidate 537 in CORESET 540, and can transmit repetitions of the PDCCH in PDCCH candidates 538, 539, and 541 in CORESET 540 of slots 528, 529, and 531. That is, each of the PDCCH candidates 537, 538, 539, and 541 can include the same PDCCH.

[0087] Figure 6 FIG. 6 is an example illustrating a plurality of overlapping aggregated monitoring occasions 610 according to some aspects of the disclosure, where at least two monitoring occasions in each aggregated monitoring occasion have different interlace parameter configurations. A first set of aggregated monitoring occasions 612 includes consecutive monitoring occasions in slots 620, 622, 624, and 626 in candidates 630, 632, 634, and 636 of CORESET 640. A second set of aggregated monitoring occasions 614 includes consecutive monitoring occasions in slots 622, 624, 626, and 628 in candidates 632, 634, 636, and 638 of CORESET 640. A third set of aggregated monitoring occasions 616 includes consecutive monitoring occasions in slots 624, 626, 628, and 629 in candidates 634, 636, 638, and 639 of CORESET 640. As illustrated, individual monitoring occasions can belong to multiple sets of aggregated monitoring occasions. As one example, a set of aggregated monitoring occasions can be based on {m, m+1, m+2, m+3}, which results in some monitoring occasions belonging to multiple sets.

[0088] Figure 7 FIG. 7 is an example illustrating a plurality of aggregated monitoring occasions 710 according to some aspects of the disclosure, the aggregated monitoring occasions 710 having a grouping of monitoring occasions within a common slot, where at least two monitoring occasions in each aggregated monitoring occasion have different interlace parameter configurations. A first set of aggregated monitoring occasions 712 includes monitoring occasions in slot 720. The base station 402 can transmit the same PDCCH on one or more of the multiple monitoring occasions. For example, the base station 402 can transmit a PDCCH on PDCCH candidate 730 in CORESET 740 of slot 720, and can transmit repetitions of the PDCCH in PDCCH candidates 732, 734, and 736 in CORESET 740 of slot 720. That is, each of the PDCCH candidates 730, 732, 734, and 736 can include the same PDCCH.

[0089] The second aggregation monitoring occasion 714 includes monitoring occasions in the slot 722. The base station 402 can transmit the same PDCCH on one or more of the multiple monitoring occasions. For example, the base station 402 can transmit a PDCCH on a PDCCH candidate 737 in the CORESET 540 and can transmit repetitions of the PDCCH in PDCCH candidates 738, 739, and 741 in the CORESET 740 of the slot 722. That is, each of the PDCCH candidates 737, 738, 739, and 741 can include the same PDCCH.

[0090] Figure 8 An example enhanced interleaving process 800 for aggregated monitoring occasions is shown, in which at least two monitoring occasions in each aggregated monitoring occasion have different interleaving parameter configurations, in accordance with some aspects of the disclosure. As described herein, the base station 402 can transmit repetitions of the same PDCCH on multiple PDCCH candidates in multiple respective PDCCH monitoring occasions of an aggregated monitoring occasion. In this example, the PDCCH can be represented as multiple CCEs 802(1)-(N), where N is any positive integer. Further, in this case, the CCEs 802(1)-(N) can include multiple REG bundles, each REG bundle including two REGs. For example, the first CCE 802(1) can include REG bundles 810, 811, and 812, and the second CCE 802(2) can include REG bundles 813, 814, and 815. To map the PDCCH to a CORESET for transmission during the monitoring occasions of the aggregated monitoring occasion, an interleaving component (e.g., the enhanced interleaving component 410) can perform a block interleaving operation 802 on the REG bundles 810-815, in which, for more than one monitoring occasion, different interleaving parameters can be applied to the same PDCCH. Through this block interleaving operation 802 using different interleaving parameters, adjacent CCEs for the PDCCH are broken up into dispersed REG bundles in the frequency domain.

[0091] For example, base station 402 can generate REG array 820 by placing REG bundles 810-815 into said number of rows according to a first interleaving parameter that defines the number of rows in REG array 820. Furthermore, in some cases, base station 402 can use a first value as the first interleaving parameter for a first PDCCH monitoring time for aggregation monitoring time, and use another value for another PDCCH monitoring time for aggregation monitoring time. As described in detail herein, using different values ​​for said number of rows when constructing REG array 820 for different monitoring times for aggregation monitoring time can provide frequency domain diversity on the aggregation monitoring time. In this example, the first interleaving parameter can be two rows. Alternatively, in some other aspects, the first interleaving parameter can be three or six rows, or any other value allowed, for example, according to the technical specifications for a particular communication protocol.

[0092] Furthermore, base station 402 can generate REG column 830 by reading REG bundles 810-815 column by column from REG array 820. Once base station 402 generates REG column 830, in some cases, base station 402 can apply multiple different cyclic shifts to REG column 830 according to a second interleaving parameter, which defines the number of cyclic shifts to be performed on REG column 830 for the corresponding PDCCH monitoring timing for aggregation monitoring timing.

[0093] For example, such as Figure 8 As shown, base station 402 can use a first value (i.e., one cyclic shift) as a second interleaving parameter to determine mapped REG information 840, which corresponds to the physical placement of REG bundles 810-815 on the CORESET for a first monitoring time for aggregated monitoring time. Base station 402 can also use a second value (i.e., two cyclic shifts) as a second interleaving parameter to determine mapped REG information 842, which corresponds to the physical placement of REG bundles 810-815 on the CORESET for a second monitoring time for aggregated monitoring time. As described in detail herein, using different values ​​for multiple cyclic shifts can provide frequency domain diversity on the aggregated monitoring time when determining the physical location of REG bundles 810-815 on the CORESET for different monitoring times for aggregated monitoring time.

[0094] One or both of the above operations can be performed similarly to determine the physical location of each REG bundle in multiple REG bundles for each of multiple different monitoring times for the aggregation monitoring time on the CORESET.

[0095] Although Figure 8Examples include two different cyclic shifts for determining the physical placement of the multiple REG bundles 810-815 of two different monitoring occasions of the aggregated monitoring occasion on the CORESET, but it should be understood that the base station 402 can vary one or both of the first interlace parameter (e.g., number of rows) and the second interlace parameter (e.g., number of cyclic shifts) for at least two monitoring occasions of the aggregated monitoring occasion. In some cases, the base station 402 can vary one or both of the first interlace parameter and the second interlace parameter for each monitoring occasion of the aggregated monitoring occasion. Again, such variation of one or both of the first interlace parameter and the second interlace parameter for at least two monitoring occasions of the aggregated monitoring occasion provides frequency domain diversity across the aggregated monitoring occasion.

[0096] Figure 9 is a communication flow 900 between a base station 902 (e.g., base station 402) and a UE 904 (e.g., UE 404) that supports interlace enhancement for PDCCH aggregated monitoring occasions according to some aspects of the present disclosure. In this example, the base station 902 transmits a CORESET and search space configuration 906 to the UE 904. Additionally or alternatively, in some examples, the UE 904 can be preconfigured with the CORESET and search space configuration 902 using different mechanisms. The CORESET and search space configuration 906 can include enhanced coverage PDCCH procedure information that identifies an aggregated monitoring occasion of a PDCCH monitoring occasion grouping with repetitions of a same PDCCH and interlace enhancement information that indicates different interlace parameter configurations for at least two PDCCH monitoring occasions in the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. In some aspects, the enhanced coverage PDCCH procedure information can include one or more of an aggregation level or a data size associated with a set of aggregated monitoring occasions for which the UE 904 is to monitor for PDCCH. The enhanced coverage PDCCH procedure information can also include a duration, a repetition pattern, or other information about the set of aggregated monitoring occasions. In some examples, on the UE side, the enhanced coverage PDCCH monitoring procedure can include monitoring for a same PDCCH on multiple PDCCH candidates in multiple respective monitoring occasions in a same search space with a same PDCCH candidate index.

[0097] Further, the base station 902 can transmit an enhanced-coverage PDCCH procedure activation signal 908 that includes an indication regarding an enhanced-coverage PDCCH monitoring procedure. Further, the base station 902 can transmit the enhanced-coverage PDCCH procedure activation signal 908 based at least in part on a frequency band associated with the base station, a size of a control resource set associated with the PDCCH, and / or a subcarrier spacing value. In some aspects, the indication in the enhanced-coverage PDCCH procedure activation signal 908 indicates an activation, deactivation, or continuation of an enhanced-coverage PDCCH procedure for PDCCH monitoring. In some aspects, the enhanced-coverage PDCCH procedure activation signal 908 can be an RRC configuration message including an activation indication, a MAC CE including an activation signal, a UE DCI including an activation signal, or a group common DCI including an activation signal.

[0098] At block 910, the UEs 904 can determine whether to monitor the PDCCH according to the enhanced-coverage PDCCH procedure based on their respective configurations and conditions. For example, if the enhanced-coverage PDCCH procedure activation signal 908 activates, enables, or continues the enhanced-coverage PDCCH monitoring procedure, the UEs 904 can monitor the PDCCH based on the enhanced-coverage PDCCH procedure and the CORESET and search space configuration 906. In some examples, the UEs 904 can suffer from different degrees of weak or deteriorated beam reliability, and can determine whether to activate the enhanced-coverage PDCCH procedure for PDCCH monitoring based on their respective beam reliability and configurations.

[0099] The base station 902 can transmit, based on the CORESET and search space configuration 906, an enhanced-coverage PDCCH 912 to the UE 904 including repetitions of the same PDCCH 912 over aggregated monitoring occasions. Each aggregated monitoring occasion includes at least two PDCCH monitoring occasions. In some examples, each aggregated monitoring occasion includes k consecutive PDCCH monitoring occasions corresponding to the same search space. Further, the PDCCH 912 can be transmitted using different interleaving parameter configurations during the at least two PDCCH monitoring occasions of an aggregated monitoring occasion. For example, the PDCCH can be mapped to the CORESET via a first number of rows and / or a first number of cyclic shifts during a first PDCCH monitoring occasion and via a second number of rows and / or a second number of cyclic shifts during a second PDCCH monitoring occasion. In some aspects, a different interleaving parameter configuration can be used to map the PDCCH 912 to the CORESET for each PDCCH monitoring occasion of an aggregated monitoring occasion. Further, at block 914, the UE 904 can employ the interleaving parameter configurations to decode the CORESET and access the PDCCH 912. Further, in some such examples, each monitoring occasion can belong to a single aggregated monitoring occasion set, such as described with reference to Figure 5 and Figure 7 illustrated and described. In some other examples, the monitoring occasions can belong to multiple aggregated monitoring occasion sets, such as described with reference to Figure 6 illustrated and described.

[0100] In some examples, the base station 902 can transmit an enhanced-coverage PDCCH procedure deactivation signal 916 including an indication of a deactivation of the enhanced-coverage PDCCH procedure for PDCCH monitoring. In response to receiving such a deactivation indication, the UE 904 can cease, at block 918, monitoring for PDCCH based on the enhanced-coverage PDCCH procedure. In some aspects, the enhanced-coverage PDCCH procedure deactivation signal 916 can be an RRC configuration message including the deactivation indication, a MAC CE including the deactivation signal, a UE-specific DCI including the deactivation signal, or a group-common DCI including the deactivation signal. Additionally or alternatively, in some examples, the UE 904 can cease, at block 910, monitoring for the PDCCH 912 based on the enhanced-coverage PDCH procedure after a timer for the enhanced-coverage PDCCH procedure for PDCCH monitoring expires.

[0101] Additionally, the base station 902 can transmit the second PDCCH 920 without an enhanced coverage PDCCH procedure after deactivating the enhanced coverage PDCCH procedure for the PDCCH. The PDCCH 920 can be transmitted without repetition, and the procedure of monitoring the PDCCH 920 can be referred to as a “regular PDCCH monitoring procedure.”

[0102] Figure 10 is a flowchart of a method 1000 of interlace enhancement for aggregated monitoring occasions. The method can be performed by a UE (e.g., the UE 104, 404, 904) that can include the memory 360 and can be the entire UE 104 or a component of the UE 104, such as the PDCCH monitoring component 140, the TX processor 368, the RX processor 356, and / or the controller / processor 359. Figure 1 and 3 the UE 104 of FIG. 1, which can include the memory 360 and can be the entire UE 104 or a component of the UE 104, such as the PDCCH monitoring component 140, the TX processor 368, the RX processor 356, and / or the controller / processor 359; Figure 4 the UE 404 of FIG. 4; and / or Figure 9 the UE 904 of FIG. 9) performs.

[0103] At block 1002, the method 1000 includes receiving control resource set and search space configuration information, the control resource set and search space configuration information including enhanced coverage PDCCH procedure information and interlace enhancement information, the enhanced coverage PDCCH procedure information identifying an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions with repetitions of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. For example, the PDCCH monitoring component 140 can receive the CORESET and search space configuration 906. Additionally, the CORESET and search space configuration 902 can include the enhanced coverage PDCCH procedure information and the interlace enhancement information. The enhanced coverage PDCCH procedure information can include one or more of an aggregation level or a data size associated with the aggregated monitoring occasion in which the UE 904 is to monitor for the PDCCH 912. Additionally, the enhanced coverage PDCCH procedure information can include a duration, a repetition pattern, or other information about the aggregated monitoring occasion. The interlace enhancement information can indicate different interlace parameter configurations for each of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. For example, as described in detail with respect to FIG. 9, the interlace enhancement information can indicate that the decoding component 412 should employ a first interlace parameter configuration (e.g., two number of rows and one cyclic shift) when decoding resources transmitted during a first monitoring occasion of the aggregated monitoring occasion and a second interlace parameter configuration (e.g., two number of rows and two cyclic shifts) when decoding resources transmitted during a second monitoring occasion of the aggregated monitoring occasion. Figure 8 As described in detail with respect to FIG. 9, the interlace enhancement information can indicate that the decoding component 412 should employ a first interlace parameter configuration (e.g., two number of rows and one cyclic shift) when decoding resources transmitted during a first monitoring occasion of the aggregated monitoring occasion and a second interlace parameter configuration (e.g., two number of rows and two cyclic shifts) when decoding resources transmitted during a second monitoring occasion of the aggregated monitoring occasion. As described in detail with respect to FIG. 9, the interlace enhancement information can indicate that the decoding component 412 should employ a first interlace parameter configuration (e.g., two number of rows and one cyclic shift) when decoding resources transmitted during a first monitoring occasion of the aggregated monitoring occasion and a second interlace parameter configuration (e.g., two number of rows and two cyclic shifts) when decoding resources transmitted during a second monitoring occasion of the aggregated monitoring occasion.

[0104] In some aspects, the different interleaving parameter configurations include a different number of rows, a different number of cyclic shifts, and one or more combinations of the different number of rows and the different number of cyclic shifts for interleaving one or more resource element group bundles of a control resource set for each PDCCH monitoring occasion of the grouping of PDCCH monitoring occasions. In some aspects, each PDCCH monitoring occasion of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion can occur during different monitoring slots of a plurality of monitoring slots. Alternatively, each PDCCH monitoring occasion of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion can occur within a same monitoring slot.

[0105] Thus, a UE 104, UE 404, UE 904, TX processor 368, RX processor 356, and / or controller / processor 359 executing PDCCH monitoring component 140 can provide means for receiving control resource set and search space configuration information including enhanced coverage PDCCH procedure information and interleaving enhancement information, the enhanced coverage PDCCH procedure information identifying an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions with repetitions of a same PDCCH, the interleaving enhancement information indicating different interleaving parameter configurations for at least two PDCCH monitoring occasions of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion.

[0106] At block 1004, the method 1000 can optionally include receiving an enhanced coverage PDCCH procedure activation signal for activating the aggregated monitoring occasion of the grouping of PDCCH monitoring occasions.

[0107] For example, the PDCCH monitoring component 140 can receive an enhanced coverage PDCCH procedure activation signal 908 indicating that the base station 902 initiates a coverage enhancement mode. In some aspects, the enhanced coverage PDCCH procedure activation signal 908 can be an RRC configuration message including an activation indication, a MAC CE including an activation signal, a UE-specific DCI including an activation signal, or a group common DCI including an activation signal. Further, the base station 902 can transmit the enhanced coverage PDCCH procedure activation signal 908 to the UE 904 based at least in part on a frequency band associated with the base station, a size of a CORESET associated with the PDCCH, and / or a subcarrier spacing value. For example, the base station can transmit the enhanced coverage PDCCH procedure activation signal 908 based at least in part on the bandwidth of the CORESET being above a first threshold for a first frequency band (e.g., FR1) or the bandwidth of the CORESET being above a second threshold for a second frequency band (e.g., FR2).

[0108] Accordingly, the UE 104, UE 404, UE 904, TX processor 368, RX processor 356, and / or controller / processor 359 executing the PDCCH monitoring component 140 can provide means for receiving an enhanced coverage PDCCH procedure activation signal for activating the aggregated monitoring occasions of the PDCCH monitoring occasion grouping.

[0109] At block 1006, the method 1000 can include decoding a signal received on resources for at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping based on different interleaving parameter configurations for the at least two PDCCH monitoring occasions.

[0110] For example, the UE 404 can receive the CORESET 540 including the PDCCH candidate 530. Further, the decoding component 412 can decode the CORESET 540 using the interleaving enhancement information to obtain the PDCCH candidate 530. In some aspects, the decoding component 412 can use the interleaving enhancement information to determine a particular interleaving parameter configuration corresponding to the first PDCCH monitoring occasion of the first aggregated monitoring occasion and employ the interleaving parameter configuration to perform de-interleaving and / or cyclic shifting, as described herein. Additionally, the interleaving parameter configuration corresponding to the first PDCCH monitoring occasion of the aggregated monitoring occasion can be different from the interleaving parameter configuration corresponding to the second PDCCH monitoring occasion of the aggregated monitoring occasion in order to achieve frequency diversity on the monitoring occasions of the aggregated monitoring occasion.

[0111] In some aspects, the interleaving enhancement information indicates different interleaving parameter configurations for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion, and decoding a signal received on resources for at least two PDCCH monitoring occasions includes decoding a signal received in resources for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion based on the different interleaving parameter configurations.

[0112] Accordingly, the UE 104, UE 404, UE 904, TX processor 368, RX processor 356, and / or controller / processor 359 executing the PDCCH monitoring component 140 and the decoding component 412 can provide means for receiving an enhanced coverage PDCCH procedure activation signal for activating the aggregated monitoring occasions of the PDCCH monitoring occasion grouping.

[0113] Figure 11 is a flowchart of a method 1100 for interleaving enhancement for aggregated monitoring occasions. The method can be performed by a base station (e.g., the base station 102, 310, 502, 602, 702, 802, 902, 1002, 1102, 1202, 1302, 1402, 1502, which can be an example of a device 300, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500). Figure 1 and Figure 3a base station 102 / 180 that can include memory 376 and that can be an entire base station or a component of a base station, such as the PDCCH management component 198, TX processor 316, RX processor 370, and / or controller / processor 375; Figure 4 a base station 402; Figure 9 a base station 902) to perform.

[0114] At block 1102, the method 1100 includes determining control resource set and search space configuration information, the control resource set and search space configuration information including enhanced coverage PDCCH procedure information and interleaving enhancement information, the enhanced coverage PDCCH procedure information identifying an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions with a repetition of a PDCCH, the interleaving enhancement information indicating different interleaving parameter configurations for at least two of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. For example, the PDCCH management component 198 can generate the CORESET and search space configuration 906 including the enhanced coverage PDCCH procedure information and the interleaving enhancement information. The enhanced coverage PDCCH procedure information can include one or more of an aggregation level or a data size associated with a set of aggregated monitoring occasions in which the UE 904 is to monitor for the PDCCH 912. Additionally, the enhanced coverage PDCCH procedure information can include a duration, a repetition pattern, or other information regarding the aggregated monitoring occasion. The interleaving enhancement information can indicate different interleaving parameter configurations for each of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion. For example, as described in detail with respect to FIG. 6, the interleaving enhancement information can indicate that the decoding component 412 should employ a first interleaving parameter configuration (e.g., two number of rows and one cyclic shift) when decoding resources transmitted during a first monitoring occasion of the aggregated monitoring occasion and a second interleaving parameter configuration (e.g., two number of rows and two cyclic shifts) when decoding resources transmitted during a second monitoring occasion of the aggregated monitoring occasion. Figure 8 As described in detail with respect to FIG. 6, the interleaving enhancement information can indicate that the decoding component 412 should employ a first interleaving parameter configuration (e.g., two number of rows and one cyclic shift) when decoding resources transmitted during a first monitoring occasion of the aggregated monitoring occasion and a second interleaving parameter configuration (e.g., two number of rows and two cyclic shifts) when decoding resources transmitted during a second monitoring occasion of the aggregated monitoring occasion.

[0115] In some aspects, the different interleaving parameter configurations include a different number of rows, a different number of cyclic shifts, and one or more combinations of the different number of rows and the different number of cyclic shifts for interleaving one or more resource element groups of the control resource set for each of the PDCCH monitoring occasion grouping. In some aspects, each of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion can occur during different monitoring slots of a plurality of monitoring slots. Alternatively, each of the PDCCH monitoring occasion grouping in the aggregated monitoring occasion can occur within the same monitoring slot.

[0116] Thus, the base station 102, the base station 402, the base station 902, the TX processor 316, the RX processor 370, and / or the controller / processor 375 executing the PDCCH management component 198 can provide means for determining control resource set and search space configuration information including enhanced coverage PDCCH procedure information and interleaving enhancement information, the enhanced coverage PDCCH procedure information identifying an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions with a repetition of a PDCCH, the interleaving enhancement information indicating different interleaving parameter configurations for at least two PDCCH monitoring occasions in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion.

[0117] At block 1104, the method 1100 can include transmitting, to a UE, control resource set and search space configuration information including enhanced coverage PDCCH procedure information. For example, the PDCCH management component 198 can transmit the CORESET and search space configuration 906 to one or more UEs (e.g., the UE 404).

[0118] Thus, the base station 102, the base station 402, the base station 902, the TX processor 316, the RX processor 370, and / or the controller / processor 375 executing the PDCCH management component 198 can provide means for transmitting, to a UE, control resource set and search space configuration information including enhanced coverage PDCCH procedure information.

[0119] At block 1106, the method 1100 can optionally include transmitting an enhanced coverage PDCCH procedure activation signal for activating the aggregated monitoring occasion of the grouping of PDCCH monitoring occasions.

[0120] For example, the PDCCH management component 198 can transmit, to the UE 404, an enhanced coverage PDCCH procedure activation signal 908 indicating to initiate an enhanced coverage mode. In some aspects, the enhanced coverage PDCCH procedure activation signal 908 can be a radio resource control (RRC) configuration message including an activation indication, a medium access control (MAC) control element (CE) including an activation signal, a UE-specific downlink control information (DCI) including an activation signal, or a group common downlink control information (DCI) including an activation signal. Moreover, the base station 402 can transmit the enhanced coverage PDCCH procedure activation signal 908 to the UE 404 based at least in part on a frequency band associated with the base station, a size of a control resource set associated with the PDCCH, and / or a subcarrier spacing value. For example, the base station can transmit the enhanced coverage PDCCH procedure activation signal 908 based at least in part on a bandwidth of the CORESET being above a first threshold for a first frequency band (e.g., FR1) (e.g., 40 Mbps) or a bandwidth of the CORESET being above a second threshold for a second frequency band (e.g., FR2) (e.g., 100 Mbps).

[0121] Thus, the base station 102, the base station 402, the base station 902, the TX processor 316, the RX processor 370, and / or the controller / processor 375 executing the PDCCH management component 198 can provide means for transmitting an enhanced coverage PDCCH procedure activation signal for activating an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions.

[0122] At block 1108, the method 1000 can optionally include transmitting a same PDCCH on resources of at least two PDCCH monitoring occasions of the grouping of PDCCH monitoring occasions based on different interlace parameter configurations for the at least two PDCCH monitoring occasions of the grouping of PDCCH monitoring occasions.

[0123] For example, the PDCCH management component 198 can transmit the CORESET 540 including the PDCCH candidates 530-532. In particular, the enhanced interlacing component 410 can map the PDCCH candidates 530-532 to the CORESET 540. As described herein, the enhanced interlacing component 410 can employ a first interlace parameter configuration to map the PDCCH candidate 530 to the CORESET 540 and a second interlace parameter configuration to map the PDCCH candidate 532 to the CORESET 540. Moreover, the first interlace parameter configuration and the second interlace parameter configuration can configure the enhanced interlacing component 410 to employ at least a different number of rows or a different number of cyclic shifts when interlacing the REG bundles 810-815 corresponding to the PDCCH candidates 530-532.

[0124] In some aspects, the base station 902 can interlace one or more resource element group bundles of a control resource set for at least two PDCCH monitoring occasions of a PDCCH monitoring occasion grouping in an aggregated monitoring occasion based on different interlace parameter configurations for the at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping and transmit a same PDCCH on resources for the at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping based on the different interlace parameter configurations for the at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping.

[0125] In some aspects, the base station 902 can interlace one or more resource element group bundles of a control resource set for each PDCCH monitoring occasion of a PDCCH monitoring occasion grouping in an aggregated monitoring occasion based on different interlace parameter configurations for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping and transmit a same PDCCH on resources for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping based on the different interlace parameter configurations for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping.

[0126] Thus, a base station 102, base station 402, base station 902, TX processor 316, RX processor 370, and / or controller / processor 375 executing a PDCCH management component 198 and an enhanced interlace component 4XX can provide means for transmitting a same PDCCH on resources for at least two PDCCH monitoring occasions of a PDCCH monitoring occasion grouping in an aggregated monitoring occasion based on different interlace parameter configurations for the at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping.

[0127] The particular order or hierarchy of blocks in the disclosed process flowcharts should not be construed as limiting. The particular order or hierarchy of blocks in the process flowcharts can be re-arranged based on design. Furthermore, some blocks can be combined or omitted. The attached method claims give express

[0128] The foregoing description is provided to enable any person skilled in the art to implement the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. The claims are not intended to be limited to the aspects shown herein, but are given the full scope consistent with the text claims, wherein reference to the singular form of an element is not intended to mean "one and only one," but rather "one or more." Unless expressly stated otherwise, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "A, B, C, or any combination thereof" include any combination of A, B, or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" can be A only, B only, C only, A and B, A and C, B and C, or A and B and C, wherein any such combination may contain one or more members of A, B, or C. All structural and functional equivalents of the elements described throughout the various aspects of this disclosure are expressly incorporated herein by reference and intended to be included by the claims, and such structural and functional equivalents are known to or will be known later to those skilled in the art. Furthermore, nothing disclosed herein is intended to be offered to the public, whether or not such disclosure is expressly stated in the claims. The terms "module", "mechanism", "element", "device", etc., may not be a substitute for the term "unit". Therefore, no claim element is to be interpreted as a unit plus a function unless the element is expressly stated using the phrase "unit for...".

[0129] Example Terms

[0130] A. A method of wireless communication at a user equipment (UE), comprising: receiving control resource set and search space configuration information including enhanced coverage physical downlink control channel (PDCCH) procedure information and interleaving enhancement information, the enhanced coverage PDCCH procedure information identifying an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions with repetition of a same PDCCH, the interleaving enhancement information indicating different interleaving parameter configurations for at least two PDCCH monitoring occasions in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion; and decoding a signal received on resources for the at least two PDCCH monitoring occasions based on the different interleaving parameter configurations for the at least two PDCCH monitoring occasions in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion.

[0131] B. The method of paragraph A, wherein the different interleaving parameter configurations include a different number of rows for interleaving one or more resource element group bundles of the control resource set for each of the grouping of PDCCH monitoring occasions.

[0132] C. The method of paragraph A, wherein the different interleaving parameter configurations include a different number of cyclic shifts for interleaving one or more resource element group bundles of the control resource set for each of the grouping of PDCCH monitoring occasions.

[0133] D. The method of paragraph A, the different interleaving parameter configurations including a different number of rows, a different number of cyclic shifts, or one or more combinations of the different number of rows and the different number of cyclic shifts for interleaving one or more resource element group bundles of the control resource set for each of the grouping of PDCCH monitoring occasions.

[0134] E. The method of paragraph D, further comprising determining a number of cyclic shifts of the different number of cyclic shifts for a separate PDCCH monitoring occasion in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion based on an initial symbol of the separate PDCCH monitoring occasion.

[0135] F. The method of any of paragraphs A-E, wherein the interleaving enhancement information indicates different interleaving parameter configurations for each of the PDCCH monitoring occasions in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion, and wherein decoding the signal received on the resources for the at least two PDCCH monitoring occasions comprises decoding the signal received on the resources for each of the PDCCH monitoring occasions in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion based on the different interleaving parameter configurations.

[0136] G. The method of any of paragraphs A-E, further comprising receiving an enhanced- coverage PDCCH procedure activation signal that activates the aggregated monitoring occasion of the grouping of PDCCH monitoring occasions.

[0137] H. The method of paragraph G, wherein receiving the enhanced-coverage PDCCH procedure activation signal comprises receiving an activation indication in a radio resource control (RRC) configuration message.

[0138] I. The method of paragraph G, wherein receiving the enhanced-coverage PDCCH procedure activation signal comprises receiving an activation indication in a medium access control (MAC) control element (CE).

[0139] J. The method of paragraph G, wherein receiving the enhanced-coverage PDCCH procedure activation signal comprises receiving an activation indication in a UE-specific downlink control information (DCI).

[0140] K. The method of paragraph G, wherein receiving the enhanced-coverage PDCCH procedure activation signal comprises receiving an activation indication in a group-common downlink control information (DCI).

[0141] L. The method of paragraph G, wherein receiving the enhanced-coverage PDCCH procedure activation signal comprises receiving the enhanced-coverage PDCCH procedure activation signal from a base station based at least in part on a frequency band associated with the base station, a size of a control resource set associated with the PDCCH, and / or a subcarrier spacing value.

[0142] M. The method of any of paragraphs A-L, wherein each of the PDCCH monitoring occasions in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion occurs during different monitoring slots.

[0143] N. The method of any of paragraphs A-L, wherein each of the PDCCH monitoring occasions in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion occurs within a same monitoring slot.

[0144] O. A UE for wireless communication, comprising a memory storing computer executable instructions; and at least one processor coupled with the memory and configured to execute the computer executable instructions to perform the method of any of paragraphs A-N.

[0145] P. A UE for wireless communication, comprising means for performing the method of any of paragraphs A-N.

[0146] Q. A non-transitory computer-readable medium storing computer-executable code that, when executed by a processor, causes the processor to perform the method of any of paragraphs A-N.

[0147] R. A method of wireless communication at a base station, comprising: determining control resource set and search space configuration information, the control resource set and search space configuration information including enhanced coverage physical downlink control channel (PDCCH) procedure information and interlace enhancement information, the enhanced coverage PDCCH procedure information identifying an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions with a repetition of a PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two of the PDCCH monitoring occasion groupings in the aggregated monitoring occasion; and transmitting, to a user equipment (UE), the control resource set and search space configuration information including the enhanced coverage PDCCH procedure information.

[0148] S. The method of paragraph R, wherein the different interlace parameter configurations include different numbers of rows for interleaving one or more resource element group bundles of the control resource set for each of the groupings of PDCCH monitoring occasions.

[0149] T. The method of paragraph R, wherein the different interlace parameter configurations include different numbers of cyclic shifts for interleaving one or more resource element group bundles of the control resource set for each of the groupings of PDCCH monitoring occasions.

[0150] U. The method of paragraph R, wherein the different interlace parameter configurations include different numbers of rows, different numbers of cyclic shifts, or one or more combinations of the different numbers of rows and the different numbers of cyclic shifts for interleaving one or more resource element group bundles of the control resource set for each of the groupings of PDCCH monitoring occasions.

[0151] V. The method of paragraph U, further comprising determining a number of cyclic shifts for an individual PDCCH monitoring occasion of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion based on an initial symbol of the individual PDCCH monitoring occasion.

[0152] X. The method of any of paragraphs R-V, further comprising: interleaving one or more resource element group bundles of the control resource set for the at least two PDCCH monitoring occasions of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion based on the different interleaving parameter configurations for the at least two PDCCH monitoring occasions of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion; and transmitting the same PDCCH on resources for the at least two PDCCH monitoring occasions of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion based on the different interleaving parameter configurations for the at least two PDCCH monitoring occasions of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion.

[0153] Y. The method of any of paragraphs R-X, wherein the interleaving enhancement information indicates different interleaving parameter configurations for each PDCCH monitoring occasion of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion, and the method further comprises: interleaving one or more resource element group bundles of the control resource set for each PDCCH monitoring occasion of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion based on the different interleaving parameter configurations for each PDCCH monitoring occasion of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion; and transmitting the same PDCCH on resources for each PDCCH monitoring occasion of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion based on the different interleaving parameter configurations for each PDCCH monitoring occasion of the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion.

[0154] Z. The method of any of paragraphs R-Y, further comprising transmitting an enhanced-coverage PDCCH procedure activation signal to activate the aggregated monitoring occasion of the grouping of PDCCH monitoring occasions.

[0155] AA. The method of paragraph Z, wherein transmitting the enhanced-coverage PDCCH procedure activation signal comprises transmitting an activation indication in a radio resource control (RRC) configuration message.

[0156] AB. The method of paragraph Z, wherein transmitting the enhanced-coverage PDCCH procedure activation signal comprises transmitting an activation indication in a medium access control (MAC) control element (CE).

[0157] AC, The method of paragraph Z, wherein transmitting the enhanced-coverage PDCCH procedure activation signal comprises transmitting an activation indication in UE-specific downlink control information (DCI) and / or group common downlink control information (DCI).

[0158] AD, The method of paragraph Z, wherein transmitting the enhanced-coverage PDCCH procedure activation signal comprises determining to transmit the enhanced-coverage PDCCH procedure indicator based at least in part on a frequency band associated with the base station, a size of a control resource set associated with the PDCCH, and / or a subcarrier spacing value.

[0159] AE, The method of any of paragraphs R-AD, wherein each PDCCH monitoring occasion in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion occurs during a different monitoring slot of a plurality of monitoring slots.

[0160] AF, The method of any of paragraphs R-AD, wherein each PDCCH monitoring occasion in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion occurs during a same monitoring slot.

[0161] AG, A base station for wireless communication, comprising a memory that stores computer-executable instructions; and at least one processor coupled with the memory and configured to execute the computer-executable instructions to perform the method of any of paragraphs R-AF.

[0162] AH, A base station for wireless communication, comprising means for performing the method of any of paragraphs R-AF.

[0163] AI, A non-transitory computer-readable medium storing computer-executable code that, when executed by a processor, causes the processor to perform the method of any of paragraphs R-AF.

Claims

1. A method of wireless communication at a user equipment (UE), comprising: receiving an enhanced-coverage physical downlink control channel (PDCCH) procedure activation signal for activating aggregated monitoring of a group of PDCCH monitoring occasions; receiving control resource set and search space configuration information based on the enhanced-coverage PDCCH procedure activation signal, the control resource set and search space configuration information including enhanced-coverage PDCCH procedure information and interlace enhancement information, the enhanced-coverage PDCCH procedure information identifying aggregated monitoring occasions of the group of PDCCH monitoring occasions with repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two of the PDCCH monitoring occasions in the group of PDCCH monitoring occasions; and decoding a signal received on resources for the at least two of the PDCCH monitoring occasions in the group of PDCCH monitoring occasions based on the different interlace parameter configurations.

2. The method of claim 1, wherein, the different interlace parameter configurations include different numbers of rows for interleaving one or more resource element group bundles of the control resource set for each of the PDCCH monitoring occasions in the group of PDCCH monitoring occasions.

3. The method of claim 1, wherein, the different interlace parameter configurations include different numbers of cyclic shifts for interleaving one or more resource element group bundles of the control resource set for each of the PDCCH monitoring occasions in the group of PDCCH monitoring occasions.

4. The method of claim 1, wherein, the different interlace parameter configurations include different numbers of rows, different numbers of cyclic shifts, or one or more combinations of the different numbers of rows and the different numbers of cyclic shifts for interleaving one or more resource element group bundles of the control resource set for each of the PDCCH monitoring occasions in the group of PDCCH monitoring occasions.

5. The method of claim 4, further comprising: determining a number of cyclic shifts of the different numbers of cyclic shifts for a separate PDCCH monitoring occasion of the group of PDCCH monitoring occasions in the aggregated monitoring occasion based on an initial symbol of the separate PDCCH monitoring occasion.

6. The method of claim 1, wherein, the interlace enhancement information indicates different interlace parameter configurations for each of the PDCCH monitoring occasions in the group of PDCCH monitoring occasions in the aggregated monitoring occasion, and wherein decoding the signal received on the resources for the at least two of the PDCCH monitoring occasions includes decoding the signal received on the resources for each of the PDCCH monitoring occasions in the group of PDCCH monitoring occasions in the aggregated monitoring occasion based on the different interlace parameter configurations.

7. The method of claim 1, wherein, receiving the enhanced-coverage PDCCH procedure activation signal includes receiving an activation indication in a radio resource control (RRC) configuration message.

8. The method of claim 1, wherein, receiving the enhanced-coverage PDCCH procedure activation signal includes receiving an activation indication in a medium access control (MAC) control element (CE).

9. The method of claim 1, wherein, Receiving the enhanced coverage PDCCH procedure activation signal includes receiving an activation indication in a UE-specific downlink control information (DCI).

10. The method of claim 1, wherein, Receiving the enhanced coverage PDCCH procedure activation signal includes receiving an activation indication in a group common downlink control information (DCI).

11. The method of claim 1, wherein, Receiving the enhanced coverage PDCCH procedure activation signal includes receiving the enhanced coverage PDCCH procedure activation signal from a base station based at least in part on a frequency band associated with the base station, a size of a control resource set associated with the PDCCH, and / or a subcarrier spacing value.

12. The method of claim 1, wherein, Each PDCCH monitoring occasion in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion occurs during a different monitoring slot of a plurality of monitoring slots.

13. The method of claim 1, wherein, Each PDCCH monitoring occasion in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion occurs within a same monitoring slot.

14. A user equipment for wireless communication, comprising: memory storing computer-executable instructions; and at least one processor coupled with the memory and configured to execute the computer-executable instructions to perform the method of any of claims 1-13.

15. A method of wireless communication at a base station, comprising: determining control resource set and search space configuration information including enhanced coverage physical downlink control channel (PDCCH) procedure information and interlace enhancement information, the enhanced coverage PDCCH procedure information identifying an aggregated monitoring occasion of a grouping of PDCCH monitoring occasions with repetition of a same PDCCH, the interlace enhancement information indicating different interlace parameter configurations for at least two PDCCH monitoring occasions in the grouping of PDCCH monitoring occasions in the aggregated monitoring occasion; transmitting an enhanced coverage PDCCH procedure activation signal for activating aggregated monitoring of the grouping of PDCCH monitoring occasions; and transmitting, based on the enhanced coverage PDCCH procedure activation signal, the control resource set and search space configuration information including enhanced coverage PDCCH procedure information to a user equipment (UE).

16. The method of claim 15, wherein, the different interlace parameter configurations include different numbers of rows for interleaving one or more resource element group bundles of the control resource set for each PDCCH monitoring occasion in the grouping of PDCCH monitoring occasions.

17. The method of claim 15, wherein, the different interlace parameter configurations include different numbers of cyclic shifts for interleaving one or more resource element group bundles of the control resource set for each PDCCH monitoring occasion in the grouping of PDCCH monitoring occasions.

18. The method of claim 15, wherein, the different interlace parameter configurations include different numbers of rows, different numbers of cyclic shifts, or one or more combinations of the different numbers of rows and the different numbers of cyclic shifts for interleaving one or more resource element group bundles of the control resource set for each PDCCH monitoring occasion in the grouping of PDCCH monitoring occasions.

19. The method of claim 18, further comprising: determine a number of cyclic shifts for a separate PDCCH monitoring occasion of the separate PDCCH monitoring occasion grouping in the aggregation of monitoring occasions based on an initial symbol of the separate PDCCH monitoring occasion.

20. The method of claim 15, further comprising: interleaving one or more resource element group bundles of the control resource set for the at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping based on the different interleaving parameter configurations for the at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping in the aggregation of monitoring occasions; and transmitting the same PDCCH on resources for the at least two PDCCH monitoring occasions of the PDCCH monitoring occasion grouping based on the different interleaving parameter configurations for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping in the aggregation of monitoring occasions.

21. The method of claim 15, wherein, the interleaving enhancement information indicates different interleaving parameter configurations for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping in the aggregation of monitoring occasions, and the method further comprises: interleaving one or more resource element group bundles of the control resource set for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping based on the different interleaving parameter configurations for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping in the aggregation of monitoring occasions; and transmitting the same PDCCH on resources for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping based on the different interleaving parameter configurations for each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping in the aggregation of monitoring occasions.

22. The method of claim 15, wherein, transmitting the enhanced-coverage PDCCH procedure activation signal includes transmitting an activation indication in a radio resource control (RRC) configuration message.

23. The method of claim 15, wherein, transmitting the enhanced-coverage PDCCH procedure activation signal includes transmitting an activation indication in a medium access control (MAC) control element (CE).

24. The method of claim 15, wherein, transmitting the enhanced-coverage PDCCH procedure activation signal includes transmitting an activation indication in a specific to UE downlink control information (DCI) and / or group common downlink control information (DCI).

25. The method of claim 15, wherein, transmitting the enhanced-coverage PDCCH procedure activation signal includes determining to transmit the enhanced-coverage PDCCH procedure activation signal based at least in part on a frequency band associated with the base station, a size of a control resource set associated with the PDCCH, and / or a subcarrier spacing value.

26. The method of claim 15, wherein, each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping in the aggregation of monitoring occasions occurs during different monitoring slots of a plurality of monitoring slots.

27. The method of claim 15, wherein, each PDCCH monitoring occasion of the PDCCH monitoring occasion grouping in the aggregation of monitoring occasions occurs during a same monitoring slot.

28. A base station for wireless communication, comprising: memory storing computer-executable instructions; and at least one processor coupled with the memory and configured to execute the computer-executable instructions to perform the method of any of claims 15-27.

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