Method and apparatus for multiple control resource set (CORESET) PDCCH aggregation

Abstract

A method of wireless communication may include a UE and a base station. The base station may configure a search space associated with a first CORESET and a second CORESET for the UE, and send a PDCCH within the configured search space. The UE may monitor the PDCCH based on the configuration of the search space, wherein at least one PDCCH candidate may include components associated with different CORESETs at different monitoring occasions. The PDCCH candidates may include a first subset within the first CORESET and a second subset within the second CORESET. The PDCCH candidates may include a third subset, the third subset includes a first and a second component, and at least one of the first and the second components itself may be a PDCCH candidate within the first or second subset of PDCCH candidates.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of and priority to U.S. Provisional Application No. 63 / 055,805, filed on July 23, 2020, and entitled “METHOD AND APPARATUS FOR MULTI-CORESET PDCCH AGGREGATION,” and U.S. Patent Application No. 17 / 370,785, filed on July 8, 2021, and entitled “METHODS AND APPARATUS FOR MULTI-CORESET PDCCH AGGREGATION,” which are expressly incorporated herein by reference in their entirety. Technical Field

[0003] The present disclosure relates generally to communication systems, and more particularly to methods and apparatus for improving coverage of a physical downlink control channel (PDCCH) using multiple control resource sets (CORESET) PDCCH aggregation. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of communication services, such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of these 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 telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, or even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., Internet of Things (IoT)) and other requirements. 5G NR includes services related to enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Certain aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. 5G NR technology needs to be further improved. These improvements may also be applicable to other multiple access technologies and telecommunication standards that adopt these technologies. Summary of the invention

[0006] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of these aspects. This summary is not an extensive overview of all contemplated aspects.

[0007] It is not intended to identify key or critical elements of all aspects, nor is it intended to 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] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. An apparatus for wireless communication may include a UE and / or a base station. The base station may send a search space configuration for a search space to the UE, the search control configuration configuring the search space to be associated with a first CORESET and a second CORESET, and sending a PDCCH within the configured search space. The UE may receive the search space configuration for the search space. The UE may also monitor the PDCCH based on the search space configuration received from the base station. In one aspect, at least one PDCCH candidate may include components associated with different CORESETs at different monitoring occasions. The PDCCH candidate may include a first subset within the first CORESET and a second subset within the second CORESET. The first or second component itself may be a PDCCH candidate within the first or second subset of the PDCCH candidate. The PDCCH candidate may have an aggregation level greater than a threshold, which may be explicitly configured by one of downlink control information (DCI) or a media access control (MAC) control element (CE) (MAC-CE), or implicitly configured based on another dynamic signaling.

[0009] To accomplish the foregoing and related ends, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are indicative of only some of the various ways in which the principles of the various aspects may be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0011] Figure 2A is a diagram illustrating an example of a first frame according to aspects of the present disclosure.

[0012] Figure 2B is a diagram illustrating an example of DL channels within a subframe according to aspects of the present disclosure.

[0013] Figure 2C is a diagram illustrating an example of a second frame according to aspects of the present disclosure.

[0014] Figure 2D is a diagram illustrating an example of UL channels within a subframe according to aspects of the present disclosure.

[0015] Figure 3 is a diagram showing an example of a base station and a user equipment (UE) in an access network.

[0016] Figure 4 An example of a search space associated with multiple CORESETs is shown.

[0017] Figure 5 is a call flow diagram of a method of wireless communication.

[0018] Figure 6 is a flow chart of a method of wireless communication.

[0019] Figure 7 is a flow chart of a method of wireless communication.

[0020] Figure 8 is a flow chart of a method of wireless communication.

[0021] Fig. 9 is a flow chart of a method of wireless communication.

[0022] Fig.10 is a diagram illustrating an example of a hardware implementation for an example apparatus.

[0023] Fig.11 is a diagram illustrating an example of a hardware implementation for an example apparatus. DETAILED DESCRIPTION

[0024] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configuration in which the concepts described herein may 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 may be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid confusing these concepts.

[0025] 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, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0026] For example, an element, or any part of an element, or any combination of elements may be implemented as a "processing system" including 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 chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gating logic, discrete hardware circuits, and other suitable hardware configured to perform various functions described throughout this disclosure. One or more processors in a processing system may execute software. Software should be broadly interpreted as instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes, functions, etc., whether referring to software, firmware, middleware, microcode, hardware description languages, or other.

[0027] Therefore, in one or more example embodiments, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, these functions may be stored in or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media may be any available media that a computer can access. As an example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of computer-readable media of this type, or any other media that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.

[0028] Although aspects and implementations are described in this application by the description of some examples, it will be understood by those skilled in the art that additional implementations and use cases can be generated in many different arrangements and scenarios. The innovation described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, implementations and / or uses can be generated via integrated chip implementations and other devices based on non-module components (e.g., end users, vehicles, communication devices, computing devices, industrial equipment, retail / purchase equipment, medical devices, artificial intelligence (AI) enabling devices, etc.). Although some examples may or may not be specifically for use cases or applications, various applicability of the described innovations may occur. Implementations may include a range from chip-level or modular components to non-modular, non-chip-level implementations and further to clusters, distributed, or original equipment manufacturers (OEM) devices or systems that merge one or more aspects of the described innovations. In some practical settings, the device that merges the described aspects and features may also include additional components and features for the implementations and practices of the aspects claimed and described. For example, the transmission and reception of wireless signals necessarily include multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, (multiple) processors, interleavers, adders / summers, etc.). It is intended that the innovations described herein can be practiced in various devices of various sizes, shapes, and configurations, chip-level components, systems, distributed arrangements, aggregated or non-aggregated components, end-user devices, etc.

[0029] Figure 1 1 is a diagram showing an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). A macro cell includes a base station. A small cell includes a femto cell, a pico cell, and a micro cell.

[0030] A base station 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). A base station 102 configured for 5G NR (collectively referred to as the Next Generation RAN (NG-RAN)) may interface with the core network 190 via a second backhaul link 184. The base station 102 may perform one or more of the following functions, among other functions: transmitting user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and device tracking, RAN information management (RIM), paging, positioning, and warning messaging. The base stations 102 may communicate with each other directly or indirectly (eg, via the EPC 160 or the core network 190) via the third backhaul link 134 (eg, an X2 interface). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 may be wired or wireless.

[0031] Base stations 102 may communicate wirelessly with UEs 104. Each base station 102 may provide communication coverage for a respective geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' may have a coverage area 110' that overlaps with the coverage area 110 of one or more macro base stations 102. A network including small cells and macro cells may be considered a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group, which may be considered a closed subscriber group (CSG). A communication link 120 between a base station 102 and a UE 104 may include an uplink (UL) (also referred to as a reverse link) transmission from the UE 104 to the base station 102 and / or a downlink (downlink) (also referred to as a forward link) transmission from the base station 102 to the UE 104. The communication link 120 may use multiple input multiple output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link may be through one or more carriers. The base station 102 / UE 104 can use spectrum of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth for each carrier allocated in a carrier aggregation of a total of Yx MHz (e.g., for x component carriers) for transmission on each. The carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​than for UL). The component carrier may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell), and the secondary component carrier may be referred to as a secondary cell (SCell).

[0032] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL WWAN spectrum. The D2D communication link 158 may 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). The D2D communication may be through various wireless D2D communication systems, such as, for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0033] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 (e.g., in a 5 GHz unlicensed spectrum, etc.). When communicating in an unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) prior to communication to determine whether the channel is available.

[0034] The small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, the small cell 102' can adopt NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) used by the Wi-Fi AP 150. The small cell 102' adopting NR in the unlicensed spectrum can expand the coverage of the access network and / or increase the capacity of the access network.

[0035] The electromagnetic spectrum is often subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5GNR, two initial operating bands have been identified as frequency range designations FR1 (410MHz–7.125GHz) and FR2 (24.25GHz–52.6GHz). Although a portion of FR1 is greater than 6GHz, FR1 is often (interchangeably) referred to as the "Sub-6 GHz" band in various documents and articles. FR2 (often referred to as "millimeter wave" in documents and articles) sometimes presents a similar naming problem, although it is different from the extremely high frequency (EHF) band (30GHz–300GHz), which the International Telecommunication Union (ITU) identifies as a "millimeter wave" band.

[0036] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR research identifies the operating bands for these mid-band frequencies as the frequency range name FR3 (7.125GHz-24.25GHz). The bands falling into FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus the features of FR1 and / or FR2 can be effectively extended to the mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands are identified as frequency range names FR4a or FR4-1 (52.6GHz-71GHz), FR4 (52.6GHz-114.25GHz), and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls into the EHF band.

[0037] In view of the above aspects, unless otherwise specifically stated, it should be understood that if the term "Sub-6GHz" or the like is used in this document, it can broadly represent a frequency that can be less than 6GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used in this document, it can broadly represent a frequency that can include mid-band frequencies, can be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or can be within the EHF band.

[0038] The base station 102, whether a small cell 102' or a large cell (e.g., a macro base station), may include and / or be referred to as an eNB, a gNodeB (gNB), or other types of base stations. Some base stations, such as gNB 180, may operate in traditional sub-6 GHz spectrum, millimeter wave frequencies, and / or near millimeter wave frequencies to communicate with UE 104. When the gNB 180 operates in millimeter wave or near millimeter wave frequencies, the gNB 180 may be referred to as a millimeter wave base station. The millimeter wave base station 180 may use beamforming 182 with the UE 104 to compensate for path loss and short distances. The base station 180 and the UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0039] Base station 180 may transmit beamformed signals in one or more transmit directions 182' to UE 104. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182". UE 104 may also transmit beamformed signals in one or more transmit directions to base station 180. Base station 180 may receive beamformed signals in one or more receive directions from UE 104. Base station 180 / UE 104 may perform beam training to determine the best receive and transmit directions for each of base station 180 / UE 104. The transmit and receive directions for base station 180 may be the same or not. The transmit and receive directions for UE 104 may be the same or not.

[0040] The EPC 160 may 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 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. Typically, the MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides IP address allocation to the UE as well as other functions. The PDN gateway 172 and the BM-SC 170 are connected to IP services 176. The IP services 176 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and may be used to schedule MBMS transmissions. The MBMS Gateway 168 may be used to distribute MBMS services to base stations 102 belonging to a multicast broadcast single frequency network (MBSFN) area that broadcasts specific services, and may be responsible for session management (start / stop) and collecting eMBMS-related billing information.

[0041] The core network 190 may 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 may communicate with a unified data management (UDM) 196. The AMF 192 is a control node that handles signaling between the UE 104 and the core network 190. Typically, the AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to an IP service 197. The IP service 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a packet switching (PS) stream (PSS) service, and / or other IP services.

[0042] A base station may include and / or be referred to as a gNB, Node B, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmit receive point (TRP), or some other suitable term. Base station 102 provides an access point to EPC 160 or core network 190 for UE 104. Examples of UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablets, smart devices, wearable devices, vehicles, electrical meters, gas pumps, large or small kitchen appliances, medical devices, implants, sensors / actuators, displays, or any other similar functional devices. Some UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, mobile phone, user agent, mobile client, client or some other suitable term. In some scenarios, the term UE may also apply to one or more companion devices, such as in a device constellation arrangement. One or more of these devices may access the network together and / or individually.

[0043] Refer to Figure 1 In some aspects, the UE 104 may include a multi-CORESET PDCCH aggregation component 198 configured to receive a search space configuration for a search space, the search space configuration configuring the search space to be associated with multiple activated CORESETs, and monitor the PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions. In some aspects, the base station 180 may include a multi-CORESET PDCCH aggregation component 199 configured to send a search space configuration for a search space, the search space configuration configuring the search space to be associated with multiple activated CORESETs, and send the PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions. Although the following description may focus on 5G NR, the concepts described herein may be applicable to other similar fields, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0044] Figure 2A FIG200 is a diagram showing an example of a first subframe within a 5G NR frame structure. Figure 2B FIG230 is a diagram showing an example of DL channels within a 5G NR subframe. Figure 2C FIG250 is a diagram showing an example of a second subframe within a 5G NR frame structure. Figure 2D 280 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL, or the 5G NR frame structure may be time division duplex (TDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL. Figure 2A , 2C In the example provided, the 5GNR frame structure is assumed to be TDD, with subframe 4 configured with slot format 28 (mostly DL), where D is DL, U is UL, and F is used flexibly between DL / UL, and subframe 3 configured with slot format 1 (all UL). Although subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are all DL and UL, respectively. Other slot formats 2-61 include a mix of DL, UL and flexible symbols. The UE is 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 following description also applies to the 5G NR frame structure of TDD.

[0045] Figures 2A-2DThe frame structure is shown, and aspects of the present disclosure are applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. A subframe may also include a microslot, which may include 7, 4, or 2 symbols. Depending on whether the cyclic prefix (CP) is conventional or extended, each slot may include 14 or 12 symbols. For a conventional CP, each slot may include 14 symbols, and for an extended CP, each slot may include 12 symbols. The symbols on the DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols. The symbols on the UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) extended 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 is based on the CP and parameter set. The parameter set defines the subcarrier spacing (SCS) and effectively defines a symbol length / duration equal to 1 / SCS.

[0046]

[0047]

[0048] For normal CP (14 symbols / slot), different parameter sets μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, parameter set 2 allows 4 slots per subframe. Accordingly, for normal CP and parameter set μ, there are 14 symbols / slot and 2 μ timeslots / subframe. The subcarrier spacing can be equal to 2 μ *15kHz, where μ is parameter set 0-4. Thus, parameter set μ=0 has a subcarrier spacing of 15kHz, and parameter set μ=4 has a subcarrier spacing of 240kHz. The symbol length / duration is inversely proportional to the subcarrier spacing. Figures 2A-2D An example of a parameter set μ=2 with a normal CP of 14 symbols per slot and 4 slots per subframe is provided. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a set of frames, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP can have a specific parameter set and CP (normal or extended).

[0049] The frame structure can be represented using a resource grid. Each time slot includes a resource block (RB) (also called a physical RB (PRB)) extending 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0050] like Figure 2A As shown, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) for channel estimation at the UE (indicated as R for a particular configuration, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0051] Figure 2B An example of each DL channel within a subframe of a frame is shown. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE includes six RE groups (REGs), and each REG includes 12 consecutive REs in the OFDM symbol of the RB. The PDCCH within a BWP can be called a control resource set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during a PDCCH monitoring opportunity on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs can be located at higher and / or lower frequencies on the channel bandwidth. The primary synchronization signal (PSS) can be located within symbol 2 of a specific subframe of the frame. The PSS is used by the UE 104 to determine subframe / symbol timing and physical layer identification. The secondary synchronization signal (SSS) can be within symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the physical layer cell identity group number and the radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the position of the DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information such as system information blocks (SIBs) that are not sent through the PBCH, and paging messages.

[0052] like Figure 2CAs shown, some of the REs carry DM-RS for channel estimation at the base station (indicated as R for one specific configuration, but other DM-RS configurations are possible). The UE can send DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS can be sent in the first one or two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS can be sent in different configurations. The UE can send a sounding reference signal (SRS). The SRS can be sent in the last symbol of the subframe. The SRS can have a comb structure, and the UE can send the SRS on one of the combs. The SRS can be used by the base station for channel quality estimation to achieve frequency-dependent scheduling on the UL.

[0053] Figure 2D An example of each UL channel within a subframe of a frame is shown. The PUCCH may be positioned as indicated in a configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and hybrid automatic repeat request (HARQ) acknowledgement (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUSCH carries data and may additionally be used to carry buffer status reports (BSRs), power headroom reports (PHRs), and / or UCI.

[0054] Figure 33 is a block diagram of a base station 310 communicating with a UE 350 in an access network. In the DL, IP packets from the EPC 160 may be provided to a controller / processor 375. The controller / processor 375 implements the functions of Layer 3 and Layer 2. 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 functions associated with broadcasting of system information (e.g., MIB, SIB), 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 for UE measurement reporting; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with transmission of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs to transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0055] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functions associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection on the transmission channel, forward error correction (FEC) encoding / decoding of the transmission channel, interleaving, rate matching, mapping to physical channels, modulation / demodulation channels of physical channels, and MIMO antenna processing. The TX processor 316 processes the mapping to signal clusters 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 may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and / or 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. The channel estimate from the channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. The channel estimate may be derived from a reference signal and / or channel condition feedback sent by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX may modulate a radio frequency (RF) carrier with a corresponding spatial stream for transmission.

[0056] At the UE 350, each receiver 354RX receives a signal through its respective antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functions associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined into a single OFDM symbol stream by the RX processor 356. 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 includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols and reference signals on each subcarrier are recovered and demodulated by determining the most likely signal cluster point sent by the base station 310. These soft decisions can be based on channel estimates calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by the base station 310. The data and control signals are then provided to the controller / processor 359 which implements Layer 3 and Layer 2 functions.

[0057] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0058] Similar to the functions described in conjunction with the DL transmission of the base station 310, the controller / processor 359 provides RRC layer functions associated with the acquisition of system information (e.g., MIB, SIB), RRC connection, and measurement reporting; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification); RLC layer functions related to the transmission 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 functions related to mapping between logical channels and transport channels, multiplexing of MAC SDUs to transport blocks (TBs), demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization

[0059] Channel estimates derived by the channel estimator 358 from a reference signal or feedback sent by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a corresponding spatial stream for transmission.

[0060] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality at the UE 350. 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.

[0061] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. The memory 376 may be referred to as a computer readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the UE 350. The IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0062] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform Figure 1 At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform Figure 1 199 aspects.

[0063] In 5G NR, PDCCH is sent through a control resource set (CORESET), which can have 1, 2, or 3 OFDM symbols. That is, the base station can send PDCCH to the UE in the CORESET, and the CORESET can have multiple OFDM symbols in the time domain. For example, the CORESET can be allocated 1, 2, or 3 OFDM symbols in the time domain.

[0064] The set of potential PDCCH candidates is called a search space, and the search space is associated with a CORESET. That is, the base station can configure the search space to include a set of potential PDCCH candidates, and indicate the configuration of the search space to the UE. For example, the base station can indicate the configuration of the search space to the UE through an RRC message. The UE can monitor the search space to receive the PDCCH from the base station. The search space for receiving the PDCCH can be UE-specific. That is, the UE can be configured to monitor a UE-specific search space including PDCCH candidates to receive the PDCCH. The search space that is not UE-specific can be a common search space, and the UE can monitor the common search space. Each search space can be associated with a CORESET.

[0065] The search space may have configurable monitoring opportunities to define the periodicity of the search space (in units of the number of time slots) and a set of symbols indicating the start of each monitoring opportunity in the monitored time slot (so, each time slot may have multiple monitoring opportunities). That is, the base station may configure the monitoring opportunities of the search space to define the periodicity of the search space by the number of time slots. Thus, the periodicity of the search space may be defined in the number of periodic time slots to which the monitoring opportunities are allocated. Furthermore, each of the monitored time slots may include multiple monitoring opportunities, and the set of symbols may indicate the start of each monitoring opportunity in the monitored time slot.

[0066] For each search space, a set of aggregation levels for PDCCH candidates may be configured (may be a subset of possible aggregation levels: {1, 2, 4, 8, 16}), and the aggregation level may be the same for all monitoring occasions. That is, a PDCCH candidate may include at least one control channel element (CCE, reference Figure 4, CCE 402), and the number of CCEs allocated in the frequency domain for each of the PDCCH candidates can be defined by the aggregation level of each of the PDCCH candidates. For example, a PDCCH candidate with aggregation level 2 may include 2 CCEs aggregated in the PDCCH candidate across the frequency domain, and a PDCCH candidate with aggregation level 4 may include 4 CCEs aggregated in the PDCCH candidate across the frequency domain.

[0067] Increasing the number of OFDM symbols used for PDCCH transmission can be a way to increase the coverage of PDCCH. That is, the coverage of PDCCH can be increased by increasing the number of OFDM symbols that PDCCH transmits in the time domain. Similarly, PDCCHs included in different bandwidth parts (BWPs) or different component carriers (CCs) can improve performance by increasing frequency diversity. That is, by increasing frequency diversity by allocating PDCCHs on different BWPs or different CCs, the performance of PDCCH can be improved by increasing frequency diversity. For example, a group-common DCI can activate pre-configured monitoring aggregation (i.e., grouping of repeated PDCCH monitoring opportunities for the same PDCCH). That is, multiple PDCCH monitoring opportunities can form a group of PDCCH monitoring opportunities, and a group-common DCI can be sent to a UE to activate pre-configured monitoring aggregation between the group of PDCCH monitoring opportunities.

[0068] The present disclosure provides a method and / or apparatus to improve coverage of a PDCCH. In some aspects, a method of wireless communication may include a UE and a base station with improved coverage of a PDCCH. A search space may be configured with a first CORESET and a second CORESET, and a PDCCH may be sent within the configured search space. Here, at least one PDCCH candidate may include components associated with different CORESETs in different monitoring occasions.

[0069] Figure 4An example of a search space 400 associated with a plurality of CORESETs 410 and 420 is shown. The search space 400 may be associated with a plurality of activated CORESETs 410 and 420 at the same time. That is, the search space 400 may be associated with a plurality of CORESETs including a first CORESET 410 and a second CORESET 420. Here, the search space 400 associated with the first CORESET 410 and the second CORESET 420 may refer to a search space 400 associated with the first CORESET 410 and the second CORESET 420, both of which are activated, and different from the search space 400 that is switched between the first CORESET 410 and the second CORESET 420 or activates the first CORESET 410 and the second CORESET 420.

[0070] In one aspect, the activated CORESETs associated with the search space may be on different bandwidth parts (BWPs) and / or different carrier components (CCs). For example, a first CORESET 410 and a second CORESET 420 associated with the search space 400 may be on different BWPs. In other words, the search space 400 may be associated with a first CORESET 410 in a first BWP and a second CORESET 420 in a second BWP different from the first BWP. For example, a first CORESET 410 and a second CORESET 420 associated with the search space 400 may be on different CCs. In other words, the search space 400 may be associated with a first CORESET 410 in a first CC and a second CORESET 420 in a second CC different from the first CC.

[0071] In one aspect, different monitoring occasions of the search space can be associated with different CORESETs. For example, the first CORESET 410 and the second CORESET 420 can be associated with different monitoring occasions of the search space 400. In other words, the search space 400 can include a first monitoring occasion associated with the first CORESET 410 and a second monitoring occasion associated with the second CORESET 420. Likewise, one monitoring occasion can be associated with multiple CORESETs. For example, the first CORESET 410 and the second CORESET 420 can be associated with one monitoring occasion of the search space 400.

[0072] A plurality of CORESETs including a first CORESET 410 and a second CORESET 420 may include a plurality of PDCCH candidates having different aggregation levels. For example, the first CORESET 410 may include a first PDCCH candidate 412 having aggregation level 2, and the second CORESET 420 may include a second PDCCH candidate 422 having aggregation level 4.

[0073] In one aspect, the search space may include PDCCH candidates having components across multiple CORESETs. For example, the first CORESET 410 and the second CORESET 420 may include a third PDCCH candidate having an aggregation level of 8, wherein the first CORESET 410 includes a first component 414 of the third PDCCH candidate, and the second CORESET 420 includes a second component 424 of the third PDCCH candidate. That is, the third PDCCH candidate having an aggregation level of 8 may include the first component 414 in the first CORESET 410 and the second component 424 in the second CORESET 420.

[0074] In one aspect, aggregation across multiple CORESETs may be used for aggregation levels above a certain threshold. That is, in response to determining that the level of PDCCH candidate aggregation is greater than a threshold, PDCCH candidates having components across multiple CORESETs associated with a single search space may be applied. For example, in response to determining that the aggregation level 8 of the third PDCCH candidate is greater than a threshold, the third PDCCH candidate may be aggregated across the first CORESET 410 and the second CORESET 420, wherein the first component 414 is in the first CORESET 410 and the second component 424 is in the second CORESET 420.

[0075] In one aspect, the minimum threshold may be defined in a standard specification. That is, a set of parameters or rules may be pre-defined and agreed upon between the base station and the UE when considering the threshold to apply aggregation of PDCCH candidates across multiple CORESETs associated with a single search space.

[0076] In one aspect, the minimum threshold may depend on the frequency segment, frequency band, subcarrier spacing, and / or number of OFDM symbols of the associated CORESET and / or the size of the CORESET in number of RBs.

[0077] In one aspect, the threshold may be equal to the maximum aggregation level supported by a single CORESET. For example, the maximum PDCCH aggregation level supported by a single CORESET may be 32 and / or 64. Figure 4, the maximum PDCCH aggregation level supported by the first CORESET 410 and the second CORESET 420 may be 8, and thus a third PDCCH candidate with aggregation level 8 may be used across the first CORESET 410 and the second CORESET 420 , where the first component 414 is in the first CORESET 410 and the second component 424 is in the second CORESET 420 .

[0078] The threshold may be configured as part of the search space configuration. That is, the base station may configure the threshold for the UE as part of the search space configuration for the UE. For example, the threshold may be changed by explicit dynamic signaling (e.g., UE-specific or group-common DCI or MAC-CE), and the threshold may be changed by an implicit indication based on another dynamic signaling (e.g., an indication of coverage enhancement). That is, the base station may explicitly instruct the UE to change the threshold to apply aggregation of PDCCHs across multiple CORESETs based on dynamic signaling from the base station (such as DCI or MAC-CE), or implicitly based on another dynamic signaling (such as an indication of enhanced coverage of the PDCCH).

[0079] For PDCCH candidates with aggregation across one or more CORESETs, the components on each CORESET may be PDCCH candidates of the search space. That is, the first component 414 of the third PDCCH may be the fourth PDCCH candidate of the search space 400 in the first CORESET 410, and the second component 424 of the third PDCCH may be the fifth PDCCH candidate of the search space 400 in the second CORESET 420.

[0080] Figure 5 The present invention is a call flow diagram 500 of a method of wireless communication. The call flow diagram 500 may include a UE 502 and a base station 504. The base station 504 may configure a search space with a first CORESET and a second CORESET, and a PDCCH may be sent within the configured search space, wherein at least one PDCCH candidate may include components associated with different CORESETs in different monitoring occasions. The UE 502 may monitor the PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate may include components associated with different CORESETs in different monitoring occasions.

[0081] At 506, the base station 504 may transmit a search space configuration for the search space, the search space configuration configuring the search space to be associated with the plurality of activated CORESETs. The UE 502 may receive the search space configuration for the search space, the search space configuration configuring the search space to be associated with the plurality of activated CORESETs.

[0082] At 507, the base station 504 may send a configuration indicating an aggregation level (AL) threshold, and the UE 502 may receive the configuration indicating the AL threshold. In some aspects, the PDCCH candidates in the third subset of PDCCH candidates may each have an AL greater than the AL threshold. For example, the AL threshold may be 16, and the PDCCH candidates in the first subset of PDCCH candidates may each have an AL equal to 2. n AL, where n≥5. A configuration indicating the AL threshold may be sent from the base station 504 to the UE 502. The configuration may be implicitly based on other signaling within one of the DCI or MAC-CE, or implicitly sent and received based on other signaling within one of the DCI or MAC-CE.

[0083] At 508, the base station 504 may transmit a PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions.

[0084] At 510, the UE 502 may monitor the PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions. That is, the UE 502 may monitor the PDCCH within the configured search space to receive the PDCCH sent from the base station 504 at 508. For example, the UE 502 may monitor physical resources within a specific area in a downlink resource grid as indicated by the search space configuration to receive the PDCCH.

[0085] In one aspect, the UE 502 may monitor a PDCCH candidate in one of the multiple activated CORESETs based on a monitoring occasion in one or more monitoring occasions. That is, the UE 502 may monitor a PDCCH candidate in a first CORESET in the multiple activated CORESETs based on a first monitoring occasion, and monitor a PDCCH candidate in a second CORESET in the multiple activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion. The multiple activated CORESETs may be associated with multiple different BWPs, or the multiple activated CORESETs may be associated with multiple different CCs.

[0086] In some aspects, the UE 502 may monitor PDCCH candidates within a plurality of activated CORESETs. In one aspect, the UE 502 may monitor a first subset of PDCCH candidates within a first CORESET in the plurality of activated CORESETs in a monitoring occasion and monitor a second subset of PDCCH candidates within a second CORESET in the plurality of activated CORESETs in the monitoring occasion. The first subset of PDCCH candidates monitored within the first CORESET and the second subset of PDCCH candidates monitored within the second CORESET may be based on the monitoring occasion.

[0087] In another aspect, the UE 502 may monitor a third subset of PDCCH candidates in a first CORESET and a second CORESET in a plurality of activated CORESETs, wherein a first component of each PDCCH candidate in the third subset of PDCCH candidates is in the first CORESET, and a second component of each PDCCH candidate in the third subset of PDCCH candidates is in the second CORESET. The first component and the second component may be based on a monitoring opportunity. At least one of the first components may itself be a PDCCH candidate in the first subset of PDCCH candidates, or the second component may itself be a PDCCH candidate in the second subset of PDCCH candidates.

[0088] Figure 6 600 is a flow chart of a method of wireless communication. The method may be performed by a UE (e.g., UE 104 / 502; apparatus 1002). The UE may monitor a PDCCH within a configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate may include components associated with different CORESETs in different monitoring occasions.

[0089] At 602, the UE may receive a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs. For example, at 506, the UE 502 may receive a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs. In addition, 602 may be performed by a search space configuration component 1040.

[0090] At 603, the UE may receive a configuration indicating an AL threshold. In some aspects, each of the PDCCH candidates in the third subset of PDCCH candidates has an AL greater than the AL threshold. For example, the AL threshold may be 16, and each of the PDCCH candidates in the first subset of PDCCH candidates has an AL equal to 2. n, where n≥5. A configuration indicating an AL threshold may be sent from a base station to a UE. The configuration may be implicitly based on other signaling within one of a DCI or a MAC-CE, or implicitly received based on other signaling within one of a DCI or a MAC-CE. For example, at 507, UE 502 may receive a configuration indicating an AL threshold. In addition, 604 may be performed by a search space configuration component 1040.

[0091] At 604, the UE may monitor the PDCCH in the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions. That is, the UE may monitor the PDCCH in the configured search space to receive (e.g., at 704, refer to Figure 6 ) from the base station. For example, the UE may monitor physical resources within a specific area in a downlink resource grid as indicated by the search space configuration to receive the PDCCH. For example, at 510, the UE 502 may monitor the PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions. In addition, 604 may be performed by the PDCCH monitoring component 1042.

[0092] In one aspect, the UE may monitor a PDCCH candidate in one of the multiple activated CORESETs based on a monitoring occasion in one or more monitoring occasions. That is, the UE may monitor a PDCCH candidate in a first CORESET in the multiple activated CORESETs based on a first monitoring occasion, and monitor a PDCCH candidate in a second CORESET in the multiple activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion. The multiple activated CORESETs may be associated with multiple different BWPs, or the multiple activated CORESETs may be associated with multiple different CCs.

[0093] In some aspects, the UE may monitor PDCCH candidates within multiple activated CORESETs. In one aspect, the UE may monitor a first subset of PDCCH candidates within a first CORESET of the multiple activated CORESETs in a monitoring opportunity and monitor a second subset of PDCCH candidates within a second CORESET of the multiple activated CORESETs in the monitoring opportunity. The first subset of PDCCH candidates monitored within the first CORESET and the second subset of PDCCH candidates monitored within the second CORESET may be based on one monitoring opportunity.

[0094] In another aspect, the UE may monitor a third subset of PDCCH candidates in a first CORESET and a second CORESET in a plurality of activated CORESETs, the first component of each PDCCH candidate in the third subset of PDCCH candidates being in the first CORESET, and the second component of each PDCCH candidate in the third subset of PDCCH candidates being in the second CORESET. The first component and the second component may be based on a monitoring opportunity. At least one of the first components may itself be a PDCCH candidate in the first subset of PDCCH candidates, or the second component may itself be a PDCCH candidate in the second subset of PDCCH candidates.

[0095] Figure 7 700 is a flow chart of a method of wireless communication. The method may be performed by a UE (e.g., UE 104 / 502; apparatus 1002). The UE may monitor a PDCCH within a configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate may include components associated with different CORESETs in different monitoring occasions.

[0096] At 702, the UE may receive a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs. For example, at 506, the UE 502 may receive a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs. In addition, 702 may be performed by a search space configuration component 1040.

[0097] At 704, the UE may monitor the PDCCH in the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions. That is, the UE may monitor the PDCCH in the configured search space to receive (e.g., at 704, refer to Figure 7 ) from the base station. For example, the UE may monitor physical resources within a specific area in a downlink resource grid as indicated by the search space configuration to receive the PDCCH. For example, at 510, the UE 502 may monitor the PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions. In addition, 704 may be performed by the PDCCH monitoring component 1042.

[0098] In one aspect, the UE may monitor a PDCCH candidate in one of the multiple activated CORESETs based on a monitoring occasion in one or more monitoring occasions. That is, the UE may monitor a PDCCH candidate in a first CORESET in the multiple activated CORESETs based on a first monitoring occasion, and monitor a PDCCH candidate in a second CORESET in the multiple activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion. The multiple activated CORESETs may be associated with multiple different BWPs, or the multiple activated CORESETs may be associated with multiple different CCs.

[0099] In some aspects, the UE may monitor PDCCH candidates within multiple activated CORESETs. In one aspect, the UE may monitor a first subset of PDCCH candidates within a first CORESET in the multiple activated CORESETs in a monitoring occasion and monitor a second subset of PDCCH candidates within a second CORESET in the multiple activated CORESETs in the monitoring occasion. The first subset of PDCCH candidates monitored within the first CORESET and the second subset of PDCCH candidates monitored within the second CORESET may be based on the monitoring occasion.

[0100] In another aspect, the UE may monitor a third subset of PDCCH candidates in a first CORESET and a second CORESET in a plurality of activated CORESETs, the first component of each PDCCH candidate in the third subset of PDCCH candidates being in the first CORESET, and the second component of each PDCCH candidate in the third subset of PDCCH candidates being in the second CORESET. The first component and the second component may be based on a monitoring opportunity. At least one of the first components may itself be a PDCCH candidate in the first subset of PDCCH candidates, or the second component may itself be a PDCCH candidate in the second subset of PDCCH candidates.

[0101] Figure 8 800 is a flow chart of a method of wireless communication. The method may be performed by a base station (e.g., base station 102 / 180 / 504; apparatus 1102). The base station may configure a search space having a first CORESET and a second CORESET, and a PDCCH may be sent within the configured search space, wherein at least one PDCCH candidate may include components associated with different CORESETs in different monitoring occasions.

[0102] At 802, the base station may send a search space configuration for the search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs. For example, at 506, the base station 504 may send a search space configuration for the search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs. In addition, 802 may be performed by a search space configuration component 1140.

[0103] At 803, the base station may send a configuration indicating an AL threshold. In some aspects, each of the PDCCH candidates in the third subset of PDCCH candidates has an AL greater than the AL threshold. For example, the AL threshold may be 16, and each of the PDCCH candidates in the first subset of PDCCH candidates has an AL equal to 2. n , where n≥5. A configuration indicating an AL threshold may be sent from the base station to the base station. The configuration may be implicitly based on other signaling within one of the DCI or MAC-CE, or implicitly received based on other signaling within one of the DCI or MAC-CE. For example, at 507, the base station 504 may send a configuration indicating an AL threshold. In addition, 803 may be performed by the search space configuration component 1140.

[0104] At 804, the base station may transmit a PDCCH in a configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes a component associated with a different CORESET in different monitoring occasions. For example, at 508, the base station 504 may transmit a PDCCH in a configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes a component associated with a different CORESET in different monitoring occasions. In addition, 804 may be performed by the PDCCH transmission component 1142.

[0105] In one aspect, the base station may send a PDCCH candidate to the UE in one of the multiple activated CORESETs based on a monitoring occasion in one or more monitoring occasions. That is, the base station may send a PDCCH candidate in a first CORESET in the multiple activated CORESETs based on a first monitoring occasion, and monitor the PDCCH candidate in a second CORESET in the multiple activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion. Multiple activated CORESETs may be associated with multiple different BWPs, or multiple activated CORESETs may be associated with multiple different CCs.

[0106] In some aspects, the base station may send PDCCH candidates within a plurality of activated CORESETs. In one aspect, the base station may send a first subset of PDCCH candidates within a first CORESET of the plurality of activated CORESETs in a monitoring occasion and monitor a second subset of PDCCH candidates within a second CORESET of the plurality of activated CORESETs in the monitoring occasion. The first subset of PDCCH candidates monitored within the first CORESET and the second subset of PDCCH candidates monitored within the second CORESET may be based on the monitoring occasion.

[0107] In another aspect, the base station may send a third subset of PDCCH candidates in a first CORESET and a second CORESET in a plurality of activated CORESETs, the first component of each PDCCH candidate in the third subset of PDCCH candidates being in the first CORESET, and the second component of each PDCCH candidate in the third subset of PDCCH candidates being in the second CORESET. The first component and the second component may be based on a monitoring occasion. At least one of the first components may itself be a PDCCH candidate in the first subset of PDCCH candidates, or the second component may itself be a PDCCH candidate in the second subset of PDCCH candidates.

[0108] Fig. 9 900 is a flow chart of a method of wireless communication. The method may be performed by a base station (e.g., base station 102 / 180 / 504; apparatus 1102). The base station may configure a search space having a first CORESET and a second CORESET, and a PDCCH may be sent within the configured search space, wherein at least one PDCCH candidate may include components associated with different CORESETs in different monitoring occasions.

[0109] At 902, the base station may send a search space configuration for the search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs. For example, at 506, the base station 504 may send a search space configuration for the search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs. In addition, 902 may be performed by a search space configuration component 1140.

[0110] At 904, the base station may transmit a PDCCH in a configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes a component associated with a different CORESET in different monitoring occasions. For example, at 508, the base station 504 may transmit a PDCCH in a configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes a component associated with a different CORESET in different monitoring occasions. In addition, 904 may be performed by a PDCCH transmission component 1142.

[0111] In one aspect, the base station may send a PDCCH candidate to the UE in one of the multiple activated CORESETs based on a monitoring occasion in one or more monitoring occasions. That is, the base station may send a PDCCH candidate in a first CORESET in the multiple activated CORESETs based on a first monitoring occasion, and monitor the PDCCH candidate in a second CORESET in the multiple activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion. Multiple activated CORESETs may be associated with multiple different BWPs, or multiple activated CORESETs may be associated with multiple different CCs.

[0112] In some aspects, the base station may send PDCCH candidates within a plurality of activated CORESETs. In one aspect, the base station may send a first subset of PDCCH candidates within a first CORESET of the plurality of activated CORESETs in a monitoring occasion and monitor a second subset of PDCCH candidates within a second CORESET of the plurality of activated CORESETs in the monitoring occasion. The first subset of PDCCH candidates monitored within the first CORESET and the second subset of PDCCH candidates monitored within the second CORESET may be based on the monitoring occasion.

[0113] In another aspect, the base station may send a third subset of PDCCH candidates in a first CORESET and a second CORESET in a plurality of activated CORESETs, the first component of each PDCCH candidate in the third subset of PDCCH candidates being in the first CORESET, and the second component of each PDCCH candidate in the third subset of PDCCH candidates being in the second CORESET. The first component and the second component may be based on a monitoring occasion. At least one of the first components may itself be a PDCCH candidate in the first subset of PDCCH candidates, or the second component may itself be a PDCCH candidate in the second subset of PDCCH candidates.

[0114] Fig.101000 is a diagram illustrating an example of a hardware implementation for an apparatus 1002. The apparatus 1002 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 802 may include a cellular baseband processor 1004 (also referred to as a modem) coupled to a cellular RF transceiver 1022. In some aspects, the apparatus 1002 may also include one or more subscriber identity module (SIM) cards 1020, an application processor 1006 coupled to a secure digital (SD) card 1008 and a screen 1010, a Bluetooth module 1012, a wireless local area network (WLAN) module 1014, a global positioning system (GPS) module 1016, or a power supply 1018. The cellular baseband processor 1004 communicates with the UE 104 and / or the BS 102 / 180 via the cellular RF transceiver 1022. The cellular baseband processor 1004 may include a computer-readable medium / memory. The computer-readable medium / memory may be non-transitory. The cellular baseband processor 1004 is responsible for general processing, including the execution of software stored on a computer-readable medium / memory. When executed by the cellular baseband processor 1004, the software causes the cellular baseband processor 1004 to perform the various functions described above. The computer-readable medium / memory may also be used to store data that the cellular baseband processor 1004 operates on when executing the software. The cellular baseband processor 1004 also includes a receiving component 1030, a communication manager 1032, and a transmitting component 1034. The communication manager 1032 includes one or more of the components shown. The components within the communication manager 1032 may be stored in a computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 1004. The cellular baseband processor 1004 may be a component of the UE 350 and may include a memory 360 and / or at least one of a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the device 1002 may be a modem chip and include only the baseband processor 1004, while in another configuration, the device 1002 may be the entire UE (e.g., see Figure 3 350), and includes additional modules of device 1002.

[0115] The communication manager 1032 includes a search space configuration component 1040 configured to receive a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs, and receiving a configuration indicating an AL threshold, e.g., as described with respect to 602, 603, and 702. The communication manager 1032 also includes a PDCCH monitoring component 1042 configured to monitor a PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions, e.g., as described with respect to 604 and 804.

[0116] The apparatus may include executing Figure 5 , 6 and 7 additional components of each of the boxes in the algorithm of the flowchart. Thus, Figure 5 , 6 Each block in the flowcharts of and 7 may be performed by a component, and the apparatus may include one or more of those components. The component may be one or more hardware components specifically configured to perform the stated process / algorithm, implemented by a processor configured to perform the stated process / algorithm, stored in a computer-readable medium to be implemented by a processor, or some combination thereof.

[0117] As shown, the apparatus 1002 may include various components configured for various functions. In one configuration, the apparatus 1002, and in particular the cellular baseband processor 1004, includes a component for receiving a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of activated CORESETs, and a component for monitoring a PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes a component associated with different CORESETs in different monitoring occasions. The apparatus 1002 includes a component for monitoring a PDCCH candidate within one of the plurality of activated CORESETs based on a monitoring occasion in the one or more monitoring occasions, a component for monitoring a PDCCH candidate within a first CORESET in the plurality of activated CORESETs based on a first monitoring occasion, and a component for monitoring a PDCCH candidate within a second CORESET in the plurality of activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion. The apparatus 1002 includes a component for monitoring PDCCH candidates in a plurality of activated CORESETs, a component for monitoring a first subset of PDCCH candidates in a first CORESET in the plurality of activated CORESETs in a monitoring opportunity, and a component for monitoring a second subset of PDCCH candidates in a second CORESET in the plurality of activated CORESETs in the monitoring opportunity. The apparatus 1002 includes a component for monitoring a third subset of PDCCH candidates in a first CORESET and a second CORESET in the plurality of activated CORESETs, the first component of each PDCCH candidate in the third subset of PDCCH candidates being in the first CORESET, and the second component of each PDCCH candidate in the third subset of PDCCH candidates being in the second CORESET. The apparatus 1002 includes a component for receiving a configuration indicating an AL threshold. These components may be one or more of the components of the apparatus 1002 configured to perform the functions listed by these components. As described above, the apparatus 1002 may include a TX processor 368, an RX processor 356, and a controller / processor 359. As such, in one configuration, these components may be the TX processor 368, RX processor 356, and controller / processor 359 configured to perform the functions recited by these components.

[0118] Fig.111100 is a diagram illustrating an example of a hardware implementation for an apparatus 1102. The apparatus 1102 may be a base station, a component of a base station, or may implement base station functionality. In some aspects, the apparatus 802 may include a baseband unit 1104. The baseband unit 1104 may communicate with the UE 104 via a cellular RF transceiver 1122. The baseband unit 1104 may include a computer-readable medium / memory. The baseband unit 1104 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. When executed by the baseband unit 1104, the software enables the baseband unit 1104 to perform the various functions described above. The computer-readable medium / memory may also be used to store data that the baseband unit 1104 operates on when executing the software. The baseband unit 1104 also includes a receiving component 1130, a communication manager 1132, and a sending component 1134. The communication manager 1132 includes one or more of the components shown. The components within the communication manager 1132 may be stored in a computer-readable medium / memory and / or configured as hardware within the baseband unit 1104. The baseband unit 1104 may be a component of the base station 310 and may include a memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375.

[0119] The communication manager 1132 includes a search space configuration component 1140 configured to send a search space configuration for the search space, the search space configuration configuring the search space to be associated with multiple activated CORESETs, and sending a configuration indicating an AL threshold, such as described with respect to 802, 803, and 902. The communication manager 1132 also includes a PDCCH sending component 1142 configured to send a PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions, such as described with respect to 804 and 904.

[0120] The apparatus may include executing Figure 5 , 8 and 9 additional components of each of the boxes in the algorithm of the flowchart. Thus, Figure 5 , 8 Each block in the flowcharts of and 9 may be performed by a component, and the apparatus may include one or more of those components. The component may be one or more hardware components specifically configured to perform the stated process / algorithm, implemented by a processor configured to perform the stated process / algorithm, stored in a computer-readable medium to be implemented by a processor, or some combination thereof.

[0121] As shown, the apparatus 1102 may include various components configured for various functions. In one configuration, the apparatus 1102, and in particular the baseband unit 1104, includes a component for sending a search space configuration for a search space, the search space configuration configuring the search space to be associated with multiple activated CORESETs, and a component for sending a PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions. The apparatus 1102 includes a component for sending a PDCCH candidate within one of the multiple activated CORESETs based on a monitoring occasion in the one or more monitoring occasions, a component for sending a PDCCH candidate within a first CORESET in the multiple activated CORESETs based on a first monitoring occasion, and a component for sending a PDCCH candidate within a second CORESET in the multiple activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion. The apparatus 1102 includes a component for sending PDCCH candidates within a plurality of activated CORESETs, a component for sending a first subset of PDCCH candidates within a first CORESET in the plurality of activated CORESETs in a monitoring opportunity, and a component for sending a second subset of PDCCH candidates within a second CORESET in the plurality of activated CORESETs in the monitoring opportunity. The apparatus 1102 includes a component for sending a third subset of PDCCH candidates within a first CORESET and a second CORESET in the plurality of activated CORESETs, the first component of each PDCCH candidate in the third subset of PDCCH candidates being within the first CORESET, and the second component of each PDCCH candidate in the third subset of PDCCH candidates being within the second CORESET. The apparatus 1102 includes a component for sending a configuration indicating an AL threshold. These components may be one or more of the components of the apparatus 1102 configured to perform the functions listed by these components. As described above, the apparatus 1102 may include a TX processor 316, an RX processor 370, and a controller / processor 375. As such, in one configuration, these components may be the TX processor 316, RX processor 370, and controller / processor 375 configured to perform the functions recited by these components.

[0122] An apparatus for wireless communication may include a UE and / or a base station. The base station may send a search space configuration for a search space to the UE, the search control configuration configuring the search space to be associated with a first CORESET and a second CORESET, and sending a PDCCH within the configured search space. The UE may receive a search space configuration for the search space. The UE may also monitor the PDCCH based on the search space configuration received from the base station. In one aspect, at least one PDCCH candidate may include components associated with different CORESETs at different monitoring times. The PDCCH candidate may include a first subset within the first CORESET and a second subset within the second CORESET. The first or second component itself may be a PDCCH candidate within the first or second subset of the PDCCH candidate. The PDCCH candidate may have an aggregation level greater than a threshold, which may be explicitly configured by one of the DCI or MAC-CE, or implicitly configured based on another dynamic signaling.

[0123] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is an illustration of an exemplary method. It is understood that the specific order or hierarchy of the blocks in the process / flowchart can be rearranged according to design preferences. In addition, some blocks can be combined or omitted. The attached method claims present the elements of each block in a sample order and are not meant to be limited to the specific order or hierarchy presented.

[0124] The previous description is provided to enable those skilled in the art to practice 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. Therefore, the claims are not intended to be limited to the aspects shown herein, but to conform to the full scope consistent with the claim language, wherein the reference to the singular element is not intended to represent "one and only one", unless specifically stated, but to represent "one or more". Terms such as "if", "when..." and "when..." should be interpreted as meaning "under..." conditions, rather than implying an instantaneous time relationship or reaction. That is, these phrases, for example, "when..." do not imply an instantaneous action in response to an action occurring or during an action occurring, but only imply that an action will occur if a condition is met, but the action does not require a specific or instantaneous time constraint. The word "exemplary" is used herein to represent "used as an example, instance or illustration". Any aspect described herein as "exemplary" is not necessarily interpreted as being superior to or better than other aspects. Unless specifically stated, 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 a combination thereof" include any combination of A, B, and / 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 a combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, wherein any such combination may include one or more members of A, B, or C. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is expressly recited in the claims. The words “module,” “mechanism,” “element,” “device,” etc. may not replace the word “component.” Therefore, any claim element should not be interpreted as a component-plus-function unless the element is explicitly recited using the phrase “component for…”

[0125] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein without limitation.

[0126] Aspect 1 is an apparatus for wireless communication, the apparatus comprising at least one processor coupled to a memory and configured to receive a search space configuration for a search space, the search space configuration configuring the search space to be associated with multiple activated CORESETs, and monitoring PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions.

[0127] Aspect 2 is the apparatus of aspect 1, wherein to monitor the PDCCH within the configured search space, at least one processor and memory are configured to monitor PDCCH candidates within one of the plurality of activated CORESETs based on a monitoring opportunity in one or more monitoring opportunities.

[0128] Aspect 3 is an apparatus of Aspects 1 and 2, wherein in order to monitor PDCCH candidates in one of a plurality of activated CORESETs, at least one processor and a memory are configured to monitor PDCCH candidates in a first CORESET in the plurality of activated CORESETs based on a first monitoring opportunity, and to monitor PDCCH candidates in a second CORESET in the plurality of activated CORESETs based on a second monitoring opportunity, the second monitoring opportunity being different from the first monitoring opportunity.

[0129] Aspect 4 is the apparatus of any one of aspects 1 to 3, wherein to monitor the PDCCH within the configured search space, at least one processor and memory are configured to monitor PDCCH candidates within a plurality of activated CORESETs.

[0130] Aspect 5 is the apparatus of Aspect 4, wherein in order to monitor PDCCH within a configured search space, at least one processor and memory are also configured to monitor a first subset of PDCCH candidates within a first CORESET among multiple activated CORESETs during a monitoring opportunity, and to monitor a second subset of PDCCH candidates within a second CORESET among multiple activated CORESETs during the monitoring opportunity.

[0131] Aspect 6 is the apparatus of aspect 5, wherein a first subset of PDCCH candidates monitored in the first CORESET and a second subset of PDCCH candidates monitored in the second CORESET are based on the monitoring opportunity.

[0132] Aspect 7 is the apparatus of Aspect 5, wherein in order to monitor PDCCH within a configured search space, at least one processor and a memory are also configured to monitor a third subset of PDCCH candidates within a first CORESET and a second CORESET among a plurality of activated CORESETs, the first component of each PDCCH candidate in the third subset of PDCCH candidates being within the first CORESET, and the second component of each PDCCH candidate in the third subset of PDCCH candidates being within the second CORESET.

[0133] Aspect 8 is the apparatus of aspect 7, wherein the first component and the second component are based on the monitoring opportunity.

[0134] Aspect 9 is the apparatus of any one of aspects 7 and 8, wherein at least one of the first components is itself a PDCCH candidate within the first subset of PDCCH candidates, or the second component is itself a PDCCH candidate within the second subset of PDCCH candidates.

[0135] Aspect 10 is the apparatus of any one of aspects 7 to 9, wherein the PDCCH candidates in the third subset of PDCCH candidates each have an AL greater than an AL threshold.

[0136] Aspect 11 is the apparatus of aspect 10, wherein the AL threshold is 16, and each of the PDCCH candidates in the first subset of PDCCH candidates has an AL value equal to 2. n AL, where n≥5.

[0137] Aspect 12 is the apparatus of any one of aspects 10 and 11, wherein the at least one processor and the memory are further configured to receive a configuration indicating an AL threshold.

[0138] Aspect 13 is the apparatus of aspect 12, wherein the configuration is explicitly received through one of DCI or MAC-CE.

[0139] Aspect 14 is the apparatus of any one of Aspects 12 and 13, wherein the configuration is received implicitly based on other signaling within one of DCI or MAC-CE.

[0140] Aspect 15 is the apparatus of any one of aspects 1 to 14, further comprising a transceiver coupled to the at least one processor, wherein the plurality of active CORESETs are associated with a plurality of different BWPs.

[0141] Aspect 16 is the apparatus of any one of Aspects 1 to 15, wherein the plurality of activated CORESETs are associated with a plurality of different CCs.

[0142] Aspect 17 is a method for wireless communication implementing any one of aspects 1 to 16.

[0143] Aspect 18 is an apparatus for wireless communication, comprising means for implementing any one of aspects 1 to 16.

[0144] Aspect 19 is a computer readable medium storing computer executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 1 to 16.

[0145] Aspect 20 is an apparatus for wireless communication, the apparatus comprising at least one processor coupled to a memory and configured to send a search space configuration for a search space, the search space configuration configuring the search space to be associated with multiple activated CORESETs, and to send a PDCCH within the configured search space during one or more monitoring occasions, wherein at least one PDCCH candidate includes components associated with different CORESETs in different monitoring occasions.

[0146] Aspect 21 is the apparatus of aspect 20, wherein to send the PDCCH within the configured search space, at least one processor and memory are configured to send the PDCCH candidate within one of the plurality of activated CORESETs based on a monitoring occasion in one or more monitoring occasions.

[0147] Aspect 22 is an apparatus of Aspects 20 and 21, wherein in order to send a PDCCH candidate in one of a plurality of activated CORESETs, at least one processor and a memory are configured to send the PDCCH candidate in a first CORESET in the plurality of activated CORESETs based on a first monitoring opportunity, and to send the PDCCH candidate in a second CORESET in the plurality of activated CORESETs based on a second monitoring opportunity, the second monitoring opportunity being different from the first monitoring opportunity.

[0148] Aspect 23 is the apparatus of any one of aspects 20 to 22, wherein to transmit the PDCCH within the configured search space, at least one processor and memory are configured to transmit PDCCH candidates within a plurality of activated CORESETs.

[0149] Aspect 24 is an apparatus of any one of Aspects 20 to 23, wherein in order to send PDCCH within a configured search space, at least one processor and memory are also configured to send a first subset of PDCCH candidates within a first CORESET among multiple activated CORESETs during a monitoring opportunity, and to send a second subset of PDCCH candidates within a second CORESET among multiple activated CORESETs during the monitoring opportunity.

[0150] Aspect 25 is the apparatus of aspect 24, wherein a first subset of PDCCH candidates monitored within the first CORESET and a second subset of PDCCH candidates monitored within the second CORESET are based on the monitoring opportunity.

[0151] Aspect 26 is the apparatus of Aspect 24, wherein in order to send PDCCH within the configured search space, at least one processor and memory are also configured to send a third subset of PDCCH candidates within a first CORESET and a second CORESET among multiple activated CORESETs, the first component of each PDCCH candidate in the third subset of PDCCH candidates being within the first CORESET, and the second component of each PDCCH candidate in the third subset of PDCCH candidates being within the second CORESET.

[0152] Aspect 27 is the apparatus of aspect 26, wherein the first component and the second component are based on the monitoring occasion.

[0153] Aspect 28 is the apparatus of any one of Aspects 26 and 27, wherein at least one of the first components is itself a PDCCH candidate within the first subset of PDCCH candidates, or the second component is itself a PDCCH candidate within the second subset of PDCCH candidates.

[0154] Aspect 29 is the apparatus of any one of aspects 26 to 28, wherein the PDCCH candidates in the third subset of PDCCH candidates each have an AL greater than an AL threshold.

[0155] Aspect 30 is the apparatus of aspect 29, wherein the AL threshold is 16, and each of the PDCCH candidates in the first subset of PDCCH candidates has an AL threshold equal to 2. n AL, where n≥5.

[0156] Aspect 31 is the apparatus of any one of aspects 29 to 30, wherein the at least one processor and the memory are further configured to send a configuration indicating an AL threshold.

[0157] Aspect 32 is the apparatus of aspect 31, wherein the configuration is explicitly transmitted through one of DCI or MAC-CE.

[0158] Aspect 33 is the apparatus of any one of Aspects 31 to 32, wherein the configuration is implicitly transmitted based on other signaling within one of DCI or MAC-CE.

[0159] Aspect 34 is the apparatus of any one of Aspects 20 to 33, further comprising a transceiver coupled to the at least one processor, wherein the plurality of active CORESETs are associated with a plurality of different BWPs.

[0160] Aspect 35 is the apparatus of any one of Aspects 20 to 34, wherein the plurality of activated CORESETs are associated with a plurality of different CCs.

[0161] Aspect 36 is a method for implementing wireless communication of any one of aspects 20 to 35.

[0162] Aspect 37 is an apparatus for wireless communication, comprising means for implementing any one of aspects 20 to 35.

[0163] Aspect 38 is a computer readable medium storing computer executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 20 to 35.

Claims

1. An apparatus for performing wireless communication at a user equipment UE, comprising: Memory; as well as at least one processor coupled to the memory, the at least one processor and the memory being configured to: Receiving a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of active control resource sets CORESETs, wherein the active CORESETs associated with the search space are on different bandwidth parts BWP and / or different carrier components CC; as well as A physical downlink control channel (PDCCH) is monitored within a configured search space during one or more monitoring occasions, at least one PDCCH candidate including components associated with different CORESETs in different monitoring occasions.

2. The apparatus of claim 1 , wherein to monitor the PDCCH within the configured search space, the at least one processor and the memory are configured to: Monitoring PDCCH candidates in a first CORESET of the plurality of activated CORESETs based on a first monitoring opportunity; and The PDCCH candidate is monitored in a second CORESET of the plurality of activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion.

3. The apparatus of claim 1 , wherein to monitor the PDCCH within the configured search space, the at least one processor and the memory are configured to: monitoring a first subset of PDCCH candidates in a first CORESET of the plurality of activated CORESETs in a monitoring occasion; and A second subset of the PDCCH candidates is monitored in a second CORESET of the plurality of activated CORESETs in the monitoring occasion.

4. The apparatus of claim 3, wherein the first subset of the PDCCH candidates monitored in the first CORESET and the second subset of the PDCCH candidates monitored in the second CORESET are based on the monitoring occasion.

5. The apparatus of claim 3, wherein to monitor the PDCCH within the configured search space, the at least one processor and the memory are further configured to: A third subset of the PDCCH candidates is monitored in the first CORESET and the second CORESET in the multiple activated CORESETs, a first component of each PDCCH candidate in the third subset of the PDCCH candidates being in the first CORESET, and a second component of each PDCCH candidate in the third subset of the PDCCH candidates being in the second CORESET. The apparatus of claim 5 , wherein the first component and the second component are based on the monitoring occasion.

7. The apparatus of claim 5, wherein at least one of the first components is itself a PDCCH candidate within the first subset of the PDCCH candidates, or the second component is itself a PDCCH candidate within the second subset of the PDCCH candidates.

8. The apparatus of claim 5, wherein each of the PDCCH candidates in the third subset of the PDCCH candidates has an AL greater than an aggregation level AL threshold.

9. The apparatus of claim 8, wherein the AL threshold is 16, and each of the PDCCH candidates in the first subset of the PDCCH candidates has an AL threshold equal to 2. n The AL, where n≥5.

10. The apparatus of claim 8, wherein the at least one processor and the memory are further configured to receive a configuration indicating the AL threshold.

11. The apparatus according to claim 10, wherein the configuration is received through a dedicated signal of at least one of downlink control information DCI or media access control MAC control element CE (MAC-CE), or based on other signals within at least one of the DCI or the MAC-CE.

12. The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor, wherein the plurality of activated CORESETs are associated with a plurality of different bandwidth parts (BWPs) or with a plurality of different component carriers (CCs).

13. A method for wireless communication at a user equipment UE, comprising: Receiving a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of active control resource sets CORESETs, wherein the active CORESETs associated with the search space are on different bandwidth parts BWP and / or different carrier components CC; as well as A physical downlink control channel (PDCCH) is monitored within a configured search space during one or more monitoring occasions, at least one PDCCH candidate including components associated with different CORESETs in different monitoring occasions.

14. The method according to claim 13, further comprising: monitoring a PDCCH candidate in a first CORESET of the plurality of activated CORESETs based on a first monitoring opportunity; as well as The PDCCH candidate is monitored in a second CORESET of the plurality of activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion.

15. The method according to claim 13, further comprising: monitoring a first subset of PDCCH candidates in a first CORESET of the plurality of activated CORESETs in a monitoring occasion; as well as A second subset of the PDCCH candidates is monitored in a second CORESET of the plurality of activated CORESETs in the monitoring occasion.

16. An apparatus for wireless communication at a base station, comprising: Memory; as well as at least one processor, coupled to the memory and configured to: Sending a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of active control resource sets CORESET, wherein the active CORESETs associated with the search space are on different bandwidth parts BWP and / or different carrier components CC; as well as A physical downlink control channel (PDCCH) is transmitted within the configured search space during one or more monitoring occasions, at least one PDCCH candidate including components associated with different CORESETs in different monitoring occasions.

17. The apparatus of claim 16, wherein to transmit the PDCCH within the configured search space, the at least one processor and the memory are configured to: Sending a PDCCH candidate in a first CORESET of the plurality of activated CORESETs based on a first monitoring occasion; and The PDCCH candidate is sent in a second CORESET of the plurality of activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion.

18. The apparatus of claim 16, wherein to transmit the PDCCH within the configured search space, the at least one processor and the memory are configured to: transmitting a first subset of PDCCH candidates in a first CORESET of the plurality of activated CORESETs in a monitoring occasion; and A second subset of the PDCCH candidates is transmitted in a second CORESET of the plurality of activated CORESETs in the monitoring occasion.

19. The apparatus of claim 18, wherein the first subset of the PDCCH candidates within the first CORESET and the second subset of the PDCCH candidates within the second CORESET are based on the monitoring occasion.

20. The apparatus of claim 18, wherein to transmit the PDCCH within the configured search space, the at least one processor and the memory are further configured to: A third subset of the PDCCH candidates is sent within the first CORESET and the second CORESET in the multiple activated CORESETs, a first component of each PDCCH candidate in the third subset of the PDCCH candidates is within the first CORESET, and a second component of each PDCCH candidate in the third subset of the PDCCH candidates is within the second CORESET.

21. The apparatus of claim 20, wherein the first component and the second component are based on the monitoring occasion.

22. The apparatus of claim 20, wherein at least one of the first components is itself a PDCCH candidate within the first subset of the PDCCH candidates, or the second component is itself a PDCCH candidate within the second subset of the PDCCH candidates.

23. The apparatus of claim 20, wherein the PDCCH candidates in the third subset of the PDCCH candidates each have an AL greater than an aggregation level AL threshold.

24. The apparatus of claim 23, wherein the AL threshold is 16, and the PDCCH candidates in the first subset of PDCCH candidates each have an AL threshold equal to 2. n The AL, where n≥5.

25. The apparatus of claim 23, wherein the at least one processor is further configured to send a configuration indicative of the AL threshold.

26. The apparatus according to claim 25, wherein the configuration is sent through a dedicated signal of at least one of downlink control information DCI or media access control MAC control element CE (MAC-CE), or based on other signals within at least one of the DCI or the MAC-CE.

27. The apparatus of claim 16, further comprising a transceiver coupled to the at least one processor, wherein the plurality of activated CORESETs are associated with a plurality of different bandwidth parts (BWPs) or with a plurality of different component carriers (CCs).

28. A method for wireless communication at a base station, comprising: Sending a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of active control resource sets CORESET, wherein the active CORESETs associated with the search space are on different bandwidth parts BWP and / or different carrier components CC; as well as A physical downlink control channel (PDCCH) is transmitted within a configured search space during one or more monitoring occasions, at least one PDCCH candidate including components associated with different CORESETs in different monitoring occasions.

29. The method according to claim 28, further comprising: Sending a PDCCH candidate in a first CORESET of the plurality of activated CORESETs based on a first monitoring occasion; as well as The PDCCH candidate is sent in a second CORESET of the plurality of activated CORESETs based on a second monitoring occasion, the second monitoring occasion being different from the first monitoring occasion.

30. The method of claim 28, further comprising: sending a first subset of PDCCH candidates in a first CORESET of the plurality of activated CORESETs in a monitoring occasion; as well as A second subset of the PDCCH candidates is transmitted in a second CORESET of the plurality of activated CORESETs in the monitoring occasion.

31. An apparatus for wireless communication at a user equipment UE, comprising: means for receiving a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of active control resource sets CORESETs, wherein the active CORESETs associated with the search space are on different bandwidth parts BWP and / or different carrier components CC; as well as Means for monitoring a physical downlink control channel (PDCCH) within a configured search space during one or more monitoring occasions, at least one PDCCH candidate comprising components associated with different CORESETs in different monitoring occasions.

32. An apparatus for wireless communication at a base station, comprising: means for sending a search space configuration for a search space, the search space configuration configuring the search space to be associated with a plurality of active control resource sets CORESETs, wherein the active CORESETs associated with the search space are on different bandwidth parts BWP and / or different carrier components CC; as well as Means for transmitting a physical downlink control channel (PDCCH) within the configured search space during one or more monitoring occasions, at least one PDCCH candidate comprising components associated with different CORESETs in different monitoring occasions.

33. A computer-readable medium storing a code for wireless communication at a user equipment (UE), the code comprising instructions which, when executed by a processor, cause the processor to perform the method according to any one of claims 13-15.

34. A computer-readable medium storing code for wireless communication at a base station, the code comprising instructions which, when executed by a processor, cause the processor to perform the method according to any one of claims 28-30.

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