Indication of power boosting for physical downlink control channel and its impact on search space

Abstract

Aspects presented herein can improve the efficiency of power boosting of PDCCH by a base station and blind PDCCH detection / decoding performed by a UE. In one aspect, a UE receives a power boosting indication for a PDCCH from a base station. The UE determines at least one search space based on the power boosting indication from the base station. The UE monitors for the PDCCH with the indicated power boosting from the base station in the at least one search space. In another aspect, a base station sends a power boosting indication for a PDCCH to a UE. The base station applies a power boosting to the PDCCH. The base station sends the PDCCH with the power boosting to the UE.

Description

[0001] Cross-reference to related applications

[0002] This application claims the rights and priorities of the following applications: U.S. Provisional Application Serial No. 63 / 065,377, filed August 13, 2020, entitled “INDICATION OF POWER BOOSTING FOR PHYSICAL DOWNLINK CONTROL CHANNEL AND ITSIMPACT ON SEARCH SPACE”; and U.S. Patent Application No. 17 / 374,324, filed July 13, 2021, entitled “INDICATION OF POWER BOOSTING FOR PHYSICAL DOWNLINK CONTROLCHANNEL AND ITS IMPACT ON SEARCH SPACE”, the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] In summary, this disclosure relates to communication systems, and more specifically, to wireless communications involving power enhancement. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

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

[0006] The following provides a brief overview of one or more aspects to offer a basic understanding of such aspects. This overview is not a comprehensive summary of all anticipated aspects, nor is it intended to identify key or important elements of all aspects, nor to depict 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 follows.

[0007] In one aspect of this disclosure, a method, computer-readable medium, and apparatus for wireless communication at a user equipment (UE) are provided. In some aspects, the apparatus receives a power boost indication for a physical downlink control channel (PDCCH) from a base station. The apparatus monitors PDCCHs with the indicated power boost from the base station in at least one search space based on the power boost indication from the base station.

[0008] In one aspect of this disclosure, a method, computer-readable medium, and apparatus for wireless communication at a base station are provided. In some aspects, the apparatus sends a power boost indication for a PDCCH to a UE. The apparatus applies a power boost to the PDCCH. The apparatus sends a PDCCH with the power boost to the UE.

[0009] To achieve the foregoing and related objectives, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and drawings set forth certain illustrative features of one or more aspects in detail. However, these features indicate only a few of the various ways in which the principles of each aspect may be employed, and the description is intended to include all such aspects and their equivalents. Attached Figure Description

[0010] Figure 1This is a diagram illustrating examples of wireless communication systems and access networks based on the aspects given in this document.

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

[0012] Figure 2B This is a diagram illustrating an example of a DL channel within a subframe according to various aspects of this disclosure.

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

[0014] Figure 2D This is a diagram illustrating an example of a UL channel within a subframe according to various aspects of this disclosure.

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

[0016] Figure 4 This is a diagram illustrating, according to various aspects of this disclosure, the time and frequency for multiple bandwidth portions (BWPs) and an example of the control resource set (CORESET) for each BWP.

[0017] Figure 5 This is an example communication flow between the UE and the base station based on various aspects of this disclosure.

[0018] Figure 6 This is a flowchart of various wireless communication methods presented in this paper.

[0019] Figure 7 This is a flowchart of various wireless communication methods presented in this paper.

[0020] Figure 8 This is a diagram illustrating an example hardware implementation of the example device according to the aspects given herein.

[0021] Figure 9 This is a flowchart of various wireless communication methods presented in this paper.

[0022] Figure 10 This is a flowchart of various wireless communication methods presented in this paper.

[0023] Figure 11 This is a diagram illustrating an example hardware implementation of the example device according to the aspects given herein. Detailed Implementation

[0024] The specific embodiments described below with reference to the accompanying drawings are intended as descriptions of various configurations and not as representing the only configuration in which the concepts described herein can be practiced. Specific details are included in the specific embodiments for the purpose of providing a comprehensive understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0025] Several aspects of a telecommunications system will now be described with reference to various apparatuses and methods. These apparatuses and methods will be described in detail below, and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented in hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0026] For example, an element, or any part of an element, or any combination of elements, can 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, system-on-a-chip (SoCs), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionalities described herein. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, software should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc.

[0027] Accordingly, in one or more example embodiments, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or code on a computer-readable medium. A computer-readable medium includes a computer storage medium. The storage medium can be any available medium accessible by a computer. By way of example, and not limitation, such a computer-readable medium 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 the types described above, or any other medium capable of storing computer-executable code accessible by a computer in the form of instructions or data structures.

[0028] While aspects and implementations are described herein by way of example, those skilled in the art will understand that additional implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, implementations and / or uses may arise via integrated chip implementations and other devices based on non-modular components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchasing devices, medical devices, AI-enabled devices, etc.). While some examples may or may not be specific to a particular use case or application, a wide variety of applicability to the described innovations can exist. Implementations can range from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating the described aspects and features may also include additional components and features for the implementation and enforcement of the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily involve several components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The innovations intended to be described herein can be implemented in a variety of devices, chip-level components, systems, distributed arrangements, aggregated or decomposed components, end-user equipment, etc., with different sizes, shapes, and constructions.

[0029] Figure 1This is a diagram illustrating 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)). Base station 102 may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.

[0030] In some aspects, UE 104 may include a PDCCH monitoring modification component 198, which is configured to modify PDCCH monitoring based on the presence and / or level of power boost associated with the monitored PDCCH. For example, PDCCH monitoring modification component 198 may be configured to receive a power boost indication for the PDCCH from base station 102 / 180; and to monitor PDCCHs with the indicated power boost from the base station in at least one search space based on the power boost indication from the base station. For example, the UE may determine one or more search spaces to monitor based on the power boost indication from the base station. Alternatively, in some aspects, PDCCH monitoring modification component 198 may be configured to request the base station to reduce the carrier aggregation level for the PDCCH to a threshold. In some aspects, base station 102 / 180 may include a power boost indication component 199, which is configured to apply a power boost to the PDCCH. The power boost indication component 199 may indicate to the UE before transmission that a PDCCH with a power boost will be transmitted, allowing the UE to modify its PDCCH monitoring at least in part based on the power boost. Alternatively, the power boost indication component 199 may modify or configure the carrier aggregation level for transmitting the PDCCH at least in part based on the power boost applied to the PDCCH.

[0031] Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with EPC 160 via a first backhaul link 132 (e.g., S1 interface). Base station 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with core network 190 via a second backhaul link 184. Among other functions, base station 102 can also perform one or more of the following functions: transmission of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection 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), user and device tracking, RAN information management (RIM), paging, location, and delivery of warning messages. Base stations 102 can communicate directly or indirectly with each other on a third backhaul link 134 (e.g., an X2 interface) (e.g., via EPC 160 or core network 190). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 can be wired or wireless.

[0032] Base station 102 can communicate wirelessly with UE 104. Each base station 102 in the base station 102 can provide communication coverage for a corresponding geographic coverage area 110. Overlapping geographic coverage areas 110 may exist. For example, a small cell 102' may have a coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include a Home Evolved Node B (eNB) (HeNB), which can provide services to restricted groups referred to as Closed Subscriber Groups (CSGs). The communication link 120 between base station 102 and UE 104 may include uplink (UL) (also referred to as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also referred to as forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technology, which includes spatial multiplexing, beamforming, and / or transmit diversity. The communication link may be via one or more carriers. Base station 102 / UE 104 may use spectrum allocated in carrier aggregation for up to a total of Yx MHz (x component carriers) for transmission in each direction, with a bandwidth of up to Y MHz per carrier (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). Carriers may be adjacent to each other or may not be adjacent to each other. Carrier allocation may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL than to UL). Component carriers may include primary component carriers and one or more secondary component carriers. The primary component carrier may be referred to as the primary cell (PCell), and the secondary component carrier may be referred to as the secondary cell (SCell).

[0033] Some UEs 104 can communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 can use DL / UL WWAN spectrum. D2D communication link 158 can use one or more sideline channels, such as the Physical Sideline Broadcast Channel (PSBCH), Physical Sideline Discovery Channel (PSDCH), Physical Sideline Shared Channel (PSSCH), and Physical Sideline Control Channel (PSCCH). D2D communication can be achieved through a variety of wireless D2D communication systems, such as, for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0034] 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, for example, in an unlicensed spectrum such as 5 GHz. When communicating in unlicensed spectrum, the STA 152 / AP 150 may perform a free channel assessment (CCA) before communication to determine whether the channel is available.

[0035] Small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102' can employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as the unlicensed spectrum used by Wi-Fi AP 150. Small cell 102' employing NR in unlicensed spectrum can improve coverage of the access network and / or increase the capacity of the access network.

[0036] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc., based on frequency / wavelength. In 5G NR, the two initial operating bands have been designated as frequency range names FR1 (410MHz-7.125GHz) and FR2 (24.25GHz-52.6GHz). Although a portion of FR1 is greater than 6GHz, in various documents and articles, FR1 is often (interchangeably) referred to as the "sub-6GHz" band. Similar naming issues sometimes arise regarding FR2; although FR2 differs from the extremely high frequency (EHF) band (30GHz-300GHz), it is often (interchangeably) referred to in documents and articles as the "millimeter wave" band, which is designated as such by the International Telecommunication Union (ITU).

[0037] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR studies have designated the operating bands for these mid-band frequencies as the frequency range name FR3 (7.125GHz–24.25GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the characteristics of FR1 and / or FR2 to mid-band frequencies. Additionally, higher frequency bands are currently being explored to extend 5G NR operation above 52.6GHz. For example, three higher operating frequency bands have been designated as the 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 within the EHF band.

[0038] In light of the foregoing, unless otherwise specifically stated, it should be understood that the terms "sub-6GHz" and the like (if used herein) can broadly refer to frequencies that are less than 6GHz, within FR1, or may include intermediate frequency band frequencies. Furthermore, unless otherwise specifically stated, it should be understood that the terms "millimeter wave" and the like (if used herein) can broadly refer to frequencies that may include intermediate frequency band frequencies, within FR2, FR4, FR4-a or FR4-1 and / or FR5, or within the EHF band.

[0039] 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, gNodeB (gNB), or another type of base station. Some base stations (such as gNB 180) may operate in conventional sub-6 GHz spectrum, millimeter wave frequencies, and / or near-millimeter wave frequencies to communicate with UE 104. When gNB 180 operates in millimeter wave or near-millimeter wave frequencies, gNB 180 may be referred to as a millimeter wave base station. Millimeter wave base station 180 may utilize beamforming 182 with UE 104 to compensate for path loss and short range. Base station 180 and UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming.

[0040] Base station 180 may transmit beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182'. UE 104 may also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 may receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beam training to determine the optimal 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 different. The transmit and receive directions for UE 104 may be the same or different.

[0041] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 can communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Generally, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP Service 176. IP Service 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, and / or other IP services. The BM-SC 170 can provide functions for MBMS user service provisioning and delivery. The BM-SC 170 can serve as an entry point for MBMS transmissions to content providers, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS gateway 168 can distribute MBMS services to base stations 102 belonging to areas of a Multicast-Broadcast Single Frequency Network (MBSFN) that broadcasts specific services, and can be responsible for session management (start / stop) and collecting billing information related to eMBMS.

[0042] Core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 can communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that processes signaling between UE 104 and core network 190. Typically, AMF 192 provides QoS streaming and session management. All user Internet Protocol (IP) packets are transmitted through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP service 197. IP service 197 may include the Internet, intranet, IP Multimedia Subsystem (IMS), packet-switched (PS) streaming service, and / or other IP services.

[0043] Base stations may include and / or be referred to as gNB, Node B, eNB, access point, base transceiver, wireless base station, wireless transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), Transmitter Receiver Point (TRP), or some other suitable term. Base station 102 provides UE 104 with access to EPC 160 or core network 190. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radio units, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet computers, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similarly functional devices. Some UEs in UE 104 may be referred to as IoT devices (e.g., parking meters, air pumps, ovens, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, user station, mobile unit, user unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile user station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. In some scenarios, the term UE may also be applied to one or more accompanying devices (such as in a device constellation arrangement). One or more of these devices may jointly access the network and / or individually access the network.

[0044] Figure 2A This is a schematic diagram 200 showing an example of the first subframe within a 5G NR frame structure. Figure 2B This is a schematic diagram 230 showing an example of a DL channel within a 5G NR subframe. Figure 2C This is a schematic diagram 250 showing an example of a second subframe within a 5G NR frame structure. Figure 2D This is a schematic diagram 280 illustrating an example of a UL channel within a 5G NR subframe. The 5G NR frame structure can be Frequency Division Duplex (FDD) (where, for a specific set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to either DL or UL), or Time Division Duplex (TDD) (where, for a specific set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to both DL and UL). In the process of... Figure 2A , Figure 2CIn the provided example, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (most of which are DL), where D is DL, U is UL, and F is flexible between DL / UL, and subframe 3 is configured with slot format 1 (all of which are 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 all UL, respectively. Other slot formats 2-61 include a mixture of DL, UL, and flexible symbols. The UE is configured with a slot format via the received Slot Format Indicator (SFI) (dynamically configured via DL Control Information (DCI) or semi-statically / statically configured via Radio Resource Control (RRC) signaling). Note that the following description also applies to the 5G NR frame structure as TDD.

[0045] Figure 2A-2D The frame structure is illustrated, and aspects of this disclosure are applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 equal-sized subframes (1 ms). Each subframe may include one or more time slots. Subframes may also include micro-time slots, which may include 7, 4, or 2 symbols. Each time slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For normal CP, each time slot may include 14 symbols, and for extended CP, each time slot may include 12 symbols. Symbols on the DL may be CP Orthogonal Frequency Division Multiplexing (OFDM) (CP-OFDM) symbols. Symbols on the UL may be CP-OFDM symbols (for high-throughput scenarios) or Discrete Fourier Transform (DFT) Spread Spectrum OFDM (DFT-s-OFDM) symbols (also known as Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols) (for power-constrained scenarios; limited to a single stream transmission). The number of time slots within a subframe is based on the CP and the digital scheme (numerology). The digital scheme defines the subcarrier spacing (SCS) and, in effect, the symbol length / duration (which can be equal to 1 / SCS).

[0046]

[0047] For a standard CP (14 symbols / slot), different digital schemes μ0 through 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For an extended CP, digital scheme 2 allows 4 slots per subframe. Accordingly, for both the standard CP and digital scheme μ0, there are 14 symbols / slot and 2 slots per subframe. μ One time slot / subframe. The subcarrier spacing can be equal to 2. μ*15kHz, where μ is the digital scheme from 0 to 4. Therefore, digital scheme μ = 0 has a subcarrier spacing of 15kHz, and digital scheme μ = 4 has a subcarrier spacing of 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figure 2A-2D Examples are provided for a standard CP (with 14 symbols per time slot) and a digital scheme μ=2 (with 4 time slots per subframe). The time slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a frame set, one or more different bandwidth portions (BWPs) can exist that are frequency-division multiplexed (see [link to relevant documentation]). Figure 2B Each BWP can have a specific digital scheme and CP (normal or extended).

[0048] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also known as a physical RB (PRB)), which extends 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.

[0049] As in 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). The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0050] Figure 2BExamples of various DL channels within a subframe of a frame are 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 comprising six RE Groups (REGs), each REG comprising 12 consecutive REs within an OFDM symbol of an RB. The PDCCH within a BWP can be referred to as 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 PDCCH monitoring on a CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs can span the channel bandwidth at larger and / or lower frequencies. The Primary Synchronization Signal (PSS) can be within symbol 2 of a specific subframe of the frame. The PSS is used by 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 Identifier Group Number and radio frame timing. Based on the Physical Layer Identifier and Physical Layer Cell Identifier Group Number, the UE can determine the Physical Cell Identifier (PCI). Based on the PCI, the UE can determine the location of the DM-RS. The Physical Broadcast Channel (PBCH), carrying the Master Information Block (MIB), can logically be grouped with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block (also known as an SS block (SSB)). The MIB provides the number of RBs and the System Frame Number (SFN) in the system bandwidth. The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not transmitted via the PBCH (such as System Information Block (SIB)), and paging messages.

[0051] As in Figure 2C As shown, some of the REs in the diagram carry DM-RS for channel estimation at the base station (indicated as R for a specific configuration, but other DM-RS configurations are possible). The UE can transmit 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 transmitted in the first one or two symbols preceding the PUSCH. The PUCCH DM-RS can be transmitted in different configurations depending on whether a short or long PUCCH is transmitted and the specific PUCCH format used. The UE can transmit a Sounding Reference Signal (SRS). The SRS can be transmitted in the last symbol of a subframe. The SRS can have a comb structure, and the UE can transmit the SRS on one of the combs. The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0052] Figure 2D Examples of various UL channels within a subframe of a frame are shown. The PUCCH can be positioned as indicated in one 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) acknowledgment (ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUCCH carries data and may additionally be used to carry buffer status reports (BSR), power headroom reports (PHR), and / or UCIs.

[0053] Figure 3 This is a block diagram illustrating communication between base station 310 and UE 350 in the access network. In the DL, IP packets from EPC 160 can be provided to controller / processor 375. Controller / processor 375 implements Layer 3 and Layer 2 functionality. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Serving Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer. The controller / processor 375 provides: RRC layer functionality associated with: broadcasting 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 functionality associated with: header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with: transmission of upper-layer packet data units (PDUs), error correction via ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with: mapping between logical channels and transport channels, MAC... Multiplexing of SDU to transport block (TB), demultiplexing of MACSDU from TB, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0054] Transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functionality associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection of the transport channel, forward error correction (FEC) encoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. TX processor 316 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase phase shift keying (M-PSK), M-order quadrature amplitude modulation (M-QAM)). The encoded and modulated symbols can then be divided into parallel streams. Each stream can then be mapped to OFDM subcarriers, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and then combined using inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. Channel estimation from channel estimator 374 can be used to determine coding and modulation schemes and for spatial processing. The channel estimation can be derived from reference signals transmitted by UE 350 and / or channel condition feedback. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can use the corresponding spatial stream to modulate a radio frequency (RF) carrier for transmission.

[0055] At UE 350, each receiver 354RX receives signals via its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and RX processor 356 implement Layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for UE 350. If multiple spatial streams are destined for UE 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal consists of a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, along with a reference signal, are recovered and demodulated by determining the most probable signal constellation point transmitted by base station 310. These soft decisions can be based on a channel estimate calculated by channel estimator 358. The soft decisions are then decoded and de-interleaved to recover the data and control signals originally transmitted by base station 310 on the physical channel. The data and control signals are then provided to controller / processor 359, which implements layer 3 and layer 2 functionality.

[0056] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0057] Similar to the functionality described in conjunction with DL transmissions performed by base station 310, controller / processor 359 provides: RRC layer functionality associated with: system information (e.g., MIB, SIB) acquisition, RRC connection and measurement reporting; PDCP layer functionality associated with: header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with: transmission of upper-layer PDUs, error correction via ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with: mapping between logical channels and transport channels, multiplexing of MAC SDUs to TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority processing, and logical channel prioritization.

[0058] The channel estimate derived by the channel estimator 358 from the reference signal or feedback transmitted by the base station 310 can be used by the TX processor 368 to select appropriate coding and modulation schemes, as well as to facilitate spatial processing. The spatial stream generated by the TX processor 368 can be provided to different antennas 352 via a separate transmitter 354TX. Each transmitter 354TX can use the corresponding spatial stream to modulate the RF carrier for transmission.

[0059] UL transmission at base station 310 is handled in a manner similar to that described for the receiver functions integrated at UE 350. Each receiver 318RX receives signals via its corresponding antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides the information to the RX processor 370.

[0060] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport channel and the logical channel to recover IP packets from the UE 350. 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 ACK and / or NACK protocols to support HARQ operation.

[0061] At least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform and Figure 1 This relates to various aspects of the PDCCH monitoring modification component 198.

[0062] At least one of the TX processor 316, RX processor 370, and controller / processor 375 can be configured to perform operations related to... Figure 1 All aspects related to the power boost indicator component 199.

[0063] Communication networks can support the use of Bandwidth Parts (BWPs), where a BWP can be a contiguous set of Physical Resource Blocks (PRBs) on a given component carrier (CC). Therefore, a BWP can include frequency resources that are contiguous in frequency. Radio devices / entities, such as UEs or base stations, can transmit and / or receive data and / or control channels within a BWP. BWPs can provide the network or radio devices with greater flexibility in allocating resources within a given CC, as BWPs can enable multiplexing of different signals and signal types to use spectrum and UE power more efficiently. A CC can be divided into multiple BWPs (e.g., one to four BWPs per CC) for uplink and / or downlink transmissions. For example, for each serving cell, a UE can be configured with up to four downlink BWPs and up to four uplink BWPs. Although multiple BWPs can be defined in the downlink and uplink, at a given time on an active serving cell, there can be one active BWP in the downlink and one active BWP in the uplink. The active BWP can define the UE's operating bandwidth within the operating bandwidth of the serving cell. The UE can send or receive data without using a BWP configured for the UE but which is not activated (e.g., deactivated or otherwise inactive).

[0064] BWP can also be configured with various parameters, which may include digital scheme, frequency location, bandwidth size, and / or control resource set (CORESET). CORESET can define the frequency domain resource blocks (RBs) and time domain duration (e.g., the number of consecutive symbols) of the control area of ​​the PDCCH. For example, a CORESET can correspond in time and frequency to the set of physical resources that the UE can use to monitor the PDCCH and / or downlink control information (DCI), and each CORESET can include one or more RBs in the frequency domain and one or more symbols in the time domain. As an example, a CORESET can include multiple RBs in the frequency domain and one, two, or three consecutive symbols in the time domain. A resource element (RE) is a unit that indicates a subcarrier in frequency on a single symbol in time. A control channel element (CCE) can include a resource element group (REG), for example, six REGs, where each REG may correspond to one RB during one OFDM symbol period (e.g., 12 REs). REGs within a CORESET can be numbered in ascending order in a time-priority manner, starting from zero (0) for the lowest-numbered resource block in the first OFDM symbol and control resource set. A UE can be configured with multiple CORESETs (e.g., up to three), each of which can be associated with a CCE-to-REG mapping. In some examples, a CORESET identifier (ID) can be assigned to a CORESET. If the UE is configured to use up to four (4) BWPs in a transmission, the UE can be configured with up to twelve (12) CORESETs on the serving cell, where each CORESET can be assigned an index from zero (0) to eleven (11) (e.g., CORESET#0, CORESET#1, CORESET#2, ..., CORESET#11, etc.). A CORESET with an ID equal to zero (e.g., CORESET#0) can be configured by a Master Information Block (MIB).

[0065] After the UE receives the PDCCH payload, it can perform blind decoding on the PDCCH payload because the UE may not know the control channel structure of the PDCCH, such as the number of control channels and the number of CCEs mapped to each control channel. Since a base station can transmit multiple PDCCHs in a given time (e.g., within a single subframe), and one or more PDCCHs in a transmission may not be dedicated to a single UE (they may be dedicated to multiple UEs), the UE can find the PDCCH dedicated to the UE in a transmission by monitoring the set of PDCCH candidates (e.g., the set of consecutive CCEs that can be mapped to the PDCCH) over a given duration (e.g., each subframe). For example, the UE can attempt to blindly decode each PDCCH candidate using a Radio Network Temporary Identifier (RNTI) associated with or assigned to the UE. If the Cyclic Redundancy Check (CRC) of the PDCCH candidate is demasked by the UE's RNTI without a CRC error, the UE can determine that the PDCCH candidate carries the UE's control information (e.g., dedicated to the UE).

[0066] When a UE performs blind decoding against a set of PDCCH candidates, the set of PDCCH candidates to be monitored by the UE (e.g., by the base station) can be configured based on a search space (SS) set. For example, the SS set associated with a CORESET can define a slot pattern and / or the start symbol of the control area within a slot. The UE can determine the slots used to monitor the SS set based on the period, offset, and / or duration associated with the SS set. In some examples, there may be multiple types of SS sets, such as a common SS (CSS) set typically monitored by a group of UEs in a cell and a UE-specific SS (USS) set monitored by a particular UE. For example, the Type 0-PDCCH CSS set can be used to schedule the PDCCH of System Information Block 1 (SIB1), the Type 0A-PDCCH CSS set can be used to schedule the PDCCH of other System Information (OSI), the Type 1-PDCCH CSS set can be used to schedule the PDCCH associated with random access, the Type 2-PDCCH CSS set can be used to schedule the PDCCH of paging messages, the Type 3-PDCCH CSS set can be used to schedule all other PDCCHs monitored in the CSS, the USS set can be used to schedule the PDCCH of UE-specific data, and so on.

[0067] CORESETs can be defined at the cell level, and a list of CORESETs to be monitored by the UE can be indicated to the UE in an active BWP. In other words, the base station can configure multiple CORESETs and multiple SS sets for the UE in an active BWP. For example, the base station can configure up to three (3) CORESETs and / or up to ten (10) SS sets per BWP for the UE. Since the UE can be configured with multiple BWPs (e.g., up to four BWPs), the UE can be configured with up to 40 SS sets and 12 CORESETs, where each SS set can be assigned an index of 0-39, and each CORESET can be assigned an index of 0-11. Each SS set can be associated with a CORESET. For example, each CORESET ID configured for the UE can be mapped to a specific BWP, and each SS set ID configured for the UE can be mapped to a specific BWP. Figure 4 Example time-frequency graph 400 is shown, illustrating multiple BWPs and a CORESET for each BWP. In some examples, the SS may include, for example, a set of CCEs at different aggregation levels. The SS may also indicate the number of candidates to be decoded (e.g., in which the UE performs decoding).

[0068] There may be limitations on the number of PDCCH blind decodings that can be performed by the UE and / or the total number of CCEs covered by PDCCH candidates that can be monitored by the UE, where per-slot limits can be defined / configured for the UE. In some examples, when the PDCCH blind detection limit for the UE is reached or exceeded, the UE may be configured to discard the SS with the last or largest SS index, since there may be no difference between candidates within the SS. In other examples, for higher frequencies and / or larger subcarrier intervals (e.g., which may correspond to shorter symbols), the available time for the UE to process PDCCHs may be relatively short compared to lower frequencies and / or smaller subcarrier intervals. This may further put pressure on the blind detection limit for the UE, for example, by reducing the number of blind detections that can be performed by the UE in a given time period. On the other hand, since the UE may consume power while performing blind decoding, the UE may be able to reduce its power consumption (e.g., enable power saving) when the number of PDCCH blind decodings and / or the number of CCEs covered by monitored candidates is reduced.

[0069] In some examples, to enhance transmission coverage and reliability, the base station can apply power boosting to PDCCH transmission, whereby the base station can increase or concentrate transmission power on control resources and / or on specific PDCCHs. This can provide the UE with improved coverage for performing blind detection of PDCCH candidates, such as PDCCH candidates with low aggregation levels.

[0070] The aspects presented in this paper can improve the efficiency of PDCCH power boosting performed by the base station and / or the efficiency of blind PDCCH detection / decoding performed by the UE. These aspects enable the base station to dynamically indicate the use of power boosting to the UE, wherein the indication can dynamically change the active subset of the search space or the set of search space monitored by the UE (e.g., a subset of PDCCH candidates actively monitored by the UE).

[0071] Figure 5 Communication flow 500 between UE 502 and base station 504 according to various aspects of this disclosure illustrates an example of dynamic power boost indication for PDCCH. At 506, base station 504 may dynamically indicate or broadcast to UE 502 or a group of UEs including UE 502 whether base station 504 will apply a power boost to one or more PDCCHs and / or one or more control resources to be sent to UE 502 (e.g., as at 510) or the group of UEs.

[0072] After receiving a power boost indication, UE 502 may modify a subset of PDCCH candidates actively monitored by UE 502 (e.g., an active subset of SSs or a set of SSs, etc.). For example, in the presence of a PDCCH power boost, at 511, UE 502 may determine at least one SS based at least in part on the power boost indication.

[0073] At 509, base station 504 may apply a power boost to one or more PDCCHs based on the power boost indication sent at 506, and at 510, base station 504 may send a PDCCH with the indicated power boost to UE 502.

[0074] At 512, UE 502 can monitor PDCCH, where UE 502 can constrain / limit its PDCCH blind detection to PDCCH candidates with lower aggregation levels or aggregation levels below a threshold (e.g., aggregation levels equal to or less than four (4) etc.) (e.g., received at 510). For example, UE 502 can have SS candidates with aggregation levels of 16, 8, 4, 2 and / or 1 etc. When UE 502 receives a PDCCH power boost indication from base station 504, UE 502 can limit SS candidates (e.g., PDCCH candidates) with aggregation levels up to four (4). This allows UE 502 to focus PDCCH candidate monitoring on PDCCH candidates with lower aggregation levels to reduce the number of monitored PDCCH candidates while still satisfying its blind detection constraints. By reducing the number of monitored PDCCH candidates, UE 502 can also reduce the power consumed during blind detection. In some examples, this can also increase the likelihood / probability of UE 502 successfully decoding a PDCCH dedicated to UE 502, since there may be fewer PDCCH candidates to be monitored and decoded. In some examples, base station 504 can apply PDCCH power boosting as a power pooling on CORESET bandwidth (e.g., a CORESET associated with an SS or set of SS), and / or base station 504 can apply PDCCH power boosting as a power pooling on a single PDCCH.

[0075] In one example, base station 504 may indicate a PDCCH power boost via group common DCI (GC-DCI) (e.g., for a group of UEs), via a UE-specific DCI, and / or via a downlink medium access control-control element (MAC-CE) (e.g., at 506).

[0076] In another example, as shown at 514, base station 504 may configure a set of active aggregation levels (e.g., for active PDCCH candidates) corresponding to a PDCCH power boost for UE 502, wherein base station 504 may configure different aggregation level sets or associate different aggregation level sets with different levels of power boost. For example, base station 504 may configure level 4 aggregation (e.g., aggregation with an aggregation level equal to or less than four (4)) / associate level 4 aggregation with a first-level PDCCH power boost, and base station 504 may configure level 8 aggregation (e.g., aggregation with an aggregation level equal to or less than eight (8)) with a second-level PDCCH power boost. Thus, when UE 502 receives an indication / configuration from base station 504 indicating a first-level PDCCH power boost, UE 502 may monitor PDCCHs with carrier aggregation levels up to four, and when UE 502 receives an indication / configuration from base station 504 indicating a second-level PDCCH power boost, UE 502 may monitor PDCCHs with carrier aggregation levels up to eight. In some examples, base station 504 can configure or define these rules or settings for UE 502 via SS configuration. Therefore, these rules or settings can be part of the SS configuration for UE 502.

[0077] In some examples, as shown at 508, UE 502 may request base station 504 to reduce the aggregation level of the PDCCH and / or recommend to base station 504 the maximum active aggregation level for the PDCCH. The request and / or recommendation from UE 502 may be based on a set of predefined and / or preconfigured options. For example, to reduce power consumption when UE 502 is at low power (or below a threshold power), UE 502 may request base station 504 to reduce the aggregation level of the PDCCH to two (2), or request / recommend that the aggregation level of the PDCCH not exceed one number (e.g., requesting that the maximum aggregation level be set to 4), etc. UE 502 may submit the request via UCI and / or MAC-CE (e.g., for uplink) (e.g., at 508). In some examples, UE 502 may implicitly indicate the aggregation level request / recommendation to base station 504 via other signaling (e.g., by indicating UE capabilities or UE power consumption limits, etc.). For example, if UE502 indicates to base station 504 that it is a UE with reduced capabilities (e.g., having lower capabilities compared to other UEs) or that the UE is configured with certain power consumption limits, base station 504 can configure a lower aggregation level for UE502 based on these implicit indications.

[0078] In some examples, the aspects described herein can be configured to apply to all search spaces or to a subset of search spaces. For example, the dynamic indications for power boosts for PDCCHs and / or their impact on blind detection of active PDCCHs described herein can be applied to all search spaces, or they can be applied to a subset of search spaces. In such examples, the UE can determine whether the power boost indication should be applied to all search spaces or to a subset of search spaces based on the search space type (e.g., whether the search space is CSS or USS), the associated RNTI, and / or its configuration, etc. For example, base station 504 can apply PDCCH power boosts to a UE-specific search space but not to a common search space, etc. Therefore, when the UE is configured with a UE-specific search space, UE 502 can anticipate PDCCH power boosts, and when the UE is configured with a common search space, UE 502 can anticipate PDCCH power boosts.

[0079] Figure 6 This is a flowchart 600 of a wireless communication method. The method can be performed by a UE or a component of a UE (e.g., UE 104, 350, 502; device 802; processing system, which may include memory 360 and may be the entire UE 350 or components of UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). The method enables the UE to modify its PDCCH and / or search space monitoring, at least in part, based on whether the PDCCH is associated with a power boost.

[0080] At position 602, the UE can receive a power boost indication for the PDCCH from the base station, such as in conjunction with... Figure 5 Described. For example, at 506, UE 502 can receive a power boost indication for PDCCH from base station 504. The reception of the power boost indication can be, for example... Figure 8 The power boost indication process is performed by the device 802 in the device 802, specifically by the power boost indication process component 840 and / or the receiving component 830. In one example, the UE may receive the power boost indication in a group common DCI, a UE-specific DCI, or a downlink MAC-CE.

[0081] At 604, the UE may request the base station to reduce the carrier aggregation level for one or more PDCCH candidates or indicate a recommended carrier aggregation level for one or more PDCCH candidates, for example, in combination with Figure 5 Described. For example, at 508, UE 502 may request base station 504 to reduce the aggregation level used for PDCCH or recommend the maximum active aggregation level to base station 504. The request or recommendation for the aggregation level may be made by, for example... Figure 8The aggregation level request component 842 and / or transmission component 834 of the device 802 perform this action. For example, the UE may request the base station to reduce carrier aggregation from 16 to 8 or from 8 to 4, or the UE may request the base station not to apply carrier aggregation higher than level 4, etc. The UE may send this request to the base station via UCI or uplink MAC CE.

[0082] In one example, the UE can implicitly notify the base station to reduce the carrier aggregation level or keep the carrier aggregation level below a threshold. For example, the UE can indicate UE capabilities (e.g., reduced UE capabilities) or power limits (e.g., the maximum power allowed for UE operation) to the base station. The UE can then monitor one or more PDCCH candidates with carrier aggregation levels below the threshold based on the UE capabilities or power limits.

[0083] In some examples, such as at 606, before the UE determines at least one search space based on the power indication and / or before the UE monitors the PDCCH using the modified search space, the UE may receive the configuration for one or more PDCCH candidates based on the power boost associated with each carrier aggregation level, for example, by combining... Figure 5 As described in section 514. The reception of configuration can be, for example, by... Figure 8 The aggregation configuration process component 844 and / or receiving component 830 of the device 802 are executed.

[0084] In one example, the base station can associate a first carrier aggregation level with a first power boost, and associate a second carrier aggregation level with a second power boost, and so on. In such an example, the base station can apply a first power boost to the PDCCH and can use the first carrier aggregation level to transmit the PDCCH, and the base station can apply a second power boost to the PDCCH and can use the second carrier aggregation level to transmit the PDCCH. In such an example, the first power boost and the second power boost can be different.

[0085] For example, as shown at 608, the UE can determine at least one search space based on a power boost indication from the base station, such as by combining... Figure 5 Described. For example, at 511, UE 502 can determine at least one SS based at least in part on a power boost indication. The determination of at least one search space can be, for example... Figure 8 The search space determination component 846 of the device 802 in the middle is executed.

[0086] In one example, the power boost indicator can be applied to every search space for the PDCCH. In another example, the power boost indicator can be applied to a subset of the search space for the PDCCH.

[0087] At 610, the UE can monitor a PDCCH with the indicated power boost from the base station in at least one search space based on a power boost indication from the base station, for example, by combining... Figure 5 Described. For example, at 512, UE 502 can monitor the PDCCH, where UE 502 can limit its blind detection of the PDCCH to PDCCH candidates with lower aggregation levels (e.g., those received at 510). Monitoring of PDCCHs with indicated power boosts can be performed by, for example... Figure 8 The device 802 uses the PDCCH monitoring component 848 and / or receiving component 830 to perform this function.

[0088] In one example, the UE can perform blind decoding for at least a subset of one or more PDCCH candidates based on a carrier aggregation level associated with one or more PDCCH candidates. In such an example, the UE can perform blind decoding for a subset of one or more PDCCH candidates having a carrier aggregation level below a threshold (e.g., below level 4), for example, by combining... Figure 5 Described.

[0089] Figure 7 This is a flowchart 700 of a wireless communication method. The method can be performed by a UE or a component of a UE (e.g., UE 104, 350, 502; device 802; processing system, which may include memory 360 and may be the entire UE 350 or components of UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). The method enables the UE to modify its PDCCH and / or search space monitoring, at least in part, based on whether the PDCCH is associated with a power boost.

[0090] At 702, the UE can receive a power boost indication for the PDCCH from the base station, for example, in conjunction with... Figure 5 Described. For example, at 506, UE 502 can receive a power boost indication for PDCCH from base station 504. The reception of the power boost indication can be, for example... Figure 8 The power boost indication process is performed by the device 802 in the device 802, specifically by the power boost indication process component 840 and / or the receiving component 830. In one example, the UE may receive the power boost indication in a group common DCI, a UE-specific DCI, or a downlink MAC-CE.

[0091] In one example, the UE may request the base station to reduce the carrier aggregation level for one or more PDCCH candidates or indicate a recommended carrier aggregation level for one or more PDCCH candidates, for example, in combination with Figure 5Described. For example, at 508, UE 502 may request base station 504 to reduce the aggregation level used for PDCCH or recommend the maximum active aggregation level to base station 504. The request or recommendation for the aggregation level may be made by, for example... Figure 8 The aggregation level request component 842 and / or transmission component 834 of the device 802 perform this action. For example, the UE may request the base station to reduce carrier aggregation from 16 to 8 or from 8 to 4, or the UE may request the base station not to apply carrier aggregation higher than level 4, etc. The UE may send this request to the base station via UCI or uplink MAC CE.

[0092] In one example, the UE can implicitly notify the base station to reduce the carrier aggregation level or keep the carrier aggregation level below a threshold. For example, the UE can indicate UE capabilities (e.g., reduced UE capabilities) or power limits (e.g., the maximum power allowed for UE operation) to the base station. The UE can then monitor one or more PDCCH candidates with carrier aggregation levels below the threshold based on the UE capabilities or power limits.

[0093] In some examples, before the UE determines at least one search space based on the power indication and / or before the UE monitors the PDCCH using the modified search space, the UE may receive the configuration for one or more PDCCH candidates based on the power boost associated with each carrier aggregation level, such as combining... Figure 5 As described in section 514. The reception of configuration can be, for example, by... Figure 8 The aggregation configuration process component 844 and / or receiving component 830 of the device 802 are executed.

[0094] In one example, the base station can associate a first carrier aggregation level with a first power boost, and associate a second carrier aggregation level with a second power boost, and so on. In such an example, the base station can apply a first power boost to the PDCCH and can use the first carrier aggregation level to transmit the PDCCH, and the base station can apply a second power boost to the PDCCH and can use the second carrier aggregation level to transmit the PDCCH. In such an example, the first power boost and the second power boost can be different.

[0095] In some aspects, the UE can determine at least one search space based on power boost indications from the base station, for example, by combining... Figure 5 Described. For example, at 511, UE 502 can determine at least one SS based at least in part on a power boost indication. The determination of at least one search space can be, for example... Figure 8 The search space determination component 846 of the device 802 in the middle is executed.

[0096] In one example, the power boost indicator can be applied to every search space for the PDCCH. In another example, the power boost indicator can be applied to a subset of the search space for the PDCCH.

[0097] At 710, the UE can monitor a PDCCH with the indicated power boost from the base station in at least one search space based on a power boost indication from the base station, for example, by combining... Figure 5 Described. For example, at 512, UE 502 can monitor the PDCCH, where UE 502 can limit its blind detection of the PDCCH to PDCCH candidates with lower aggregation levels (e.g., those received at 510). Monitoring of PDCCHs with indicated power boosts can be performed by, for example... Figure 8 The device 802 uses the PDCCH monitoring component 848 and / or receiving component 830 to perform this function.

[0098] In one example, the UE can perform blind decoding for at least a subset of one or more PDCCH candidates based on a carrier aggregation level associated with one or more PDCCH candidates. In such an example, the UE can perform blind decoding for a subset of one or more PDCCH candidates having a carrier aggregation level below a threshold (e.g., below level 4), for example, by combining... Figure 5 Described.

[0099] Figure 8Figure 800 illustrates an example of a hardware implementation for device 802. Device 802 is a UE and includes a cellular baseband processor 804 (also referred to as a modem) coupled to a cellular RF transceiver 822 and one or more Subscriber Identity Module (SIM) cards 820, an application processor 806 coupled to a Secure Digital Card (SD) card 808 and a screen 810, a Bluetooth module 812, a Wireless Local Area Network (WLAN) module 814, a Global Positioning System (GPS) module 816, and a power supply 818. The cellular baseband processor 804 communicates with the UE 104 and / or BS 102 / 180 via the cellular RF transceiver 822. The cellular baseband processor 804 may include a computer-readable medium / memory. The computer-readable medium / memory may be non-transitory. The cellular baseband processor 804 is responsible for general processing, which includes executing software stored on the computer-readable medium / memory. When executed by the cellular baseband processor 804, the software causes the cellular baseband processor 804 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the cellular baseband processor 804 during software execution. The cellular baseband processor 804 also includes a receiving component 830, a communication manager 832, and a transmitting component 834. The communication manager 832 includes one or more components shown. Components within the communication manager 832 can be stored in the computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 804. The cellular baseband processor 804 can be a component of the UE 350 and can 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 802 can be a modem chip and only include the cellular baseband processor 804, and in another configuration, the device 802 can be the entire UE (e.g., see...). Figure 3 (350) and includes an additional module of device 802.

[0100] Communication manager 832 includes power boost indication process component 840, which is configured to receive a power boost indication for PDCCH from a base station, for example, as in combination with Figure 6 602 and / or Figure 7 As described in section 702. The communication manager 832 includes an aggregation level request component 842, which is configured to request a base station to reduce the carrier aggregation level for one or more PDCCH candidates or to indicate a recommended carrier aggregation level for one or more PDCCH candidates, for example, as in combination with... Figure 6As described in section 604. The communication manager 832 includes an aggregation configuration process component 844, which is configured to receive configurations for one or more PDCCH candidates based on a power boost associated with each carrier aggregation level, for example, as in combination with... Figure 6 As described in 606. The communication manager 832 also includes a search space determination component 846, configured to determine at least one search space based on a power boost indication from the base station, for example, as in conjunction with... Figure 6 As described in 608. The communication manager 832 also includes a PDCCH monitoring component 848, configured to monitor PDCCHs from the base station with indicated power increases in at least one search space, for example, as in combination with... Figure 6 610 and / or Figure 7 The description of 710.

[0101] The device may include functions that perform Figure 6 and Figure 7 The flowchart shows the algorithm's additional components in each box. Therefore, the algorithm can be executed by these components. Figure 6 and Figure 7 Each box in the flowchart, and the apparatus may include one or more of those components. A component may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0102] In one configuration, apparatus 802 (and more specifically, cellular baseband processor 804) includes: units for receiving a power boost indication for PDCCH from a base station (e.g., power boost indication process component 840 and / or receiving component 830). Apparatus 802 includes: units for requesting the base station to reduce the carrier aggregation level for one or more PDCCH candidates or indicating a recommended carrier aggregation level for one or more PDCCH candidates (e.g., aggregation level request component 842 and / or transmitting component 834). Apparatus 802 includes: units for receiving a configuration of the carrier aggregation level for one or more PDCCH candidates based on a power boost associated with each carrier aggregation level (e.g., aggregation configuration process component 844 and / or receiving component 830). Apparatus 802 includes: units for determining at least one search space based on the power boost indication from the base station (e.g., search space determination component 846). Apparatus 802 includes: units for monitoring PDCCHs with the indicated power boost from the base station in at least one search space (PDCCH monitoring component 848 and / or receiving component 830).

[0103] The aforementioned unit may be one or more components of the device 802 configured to perform the functions described therein. As described above, the device 802 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Therefore, in one configuration, the aforementioned unit may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions described therein.

[0104] Figure 9 This is a flowchart 900 of a wireless communication method. The method can be performed by a base station or components of a base station (e.g., base stations 102, 180, 310, 504; apparatus 1102; processing system, which may include memory 376 and may be the entire base station 310 or components of base station 310, such as TX processor 316, RX processor 370, and / or controller / processor 375). The method enables the base station to apply a power boost to the PDCCH before transmitting the PDCCH and to indicate the power boost to the UE, allowing the UE to modify its PDCCH monitoring at least in part based on the indicated power boost. The method also enables the base station to associate or modify the carrier aggregation level used for transmitting the PDCCH at least in part based on the power boost applied to the PDCCH.

[0105] At position 902, the base station can send a power boost indication for the PDCCH to the UE, for example, in conjunction with... Figure 5 Described. For example, at 506, base station 504 can send a power boost indication for PDCCH to UE 502. The transmission of the power boost indication can be, for example, Figure 11 The power boost indication component 1140 and / or transmission component 1134 of the device 1102 perform this function. In one example, the base station may transmit the power boost indication in a group common DCI, a UE-specific DCI, or a downlink MAC CE, etc.

[0106] In one example, as shown at 904, the base station can receive from the UE a request to reduce the carrier aggregation level for one or more PDCCH candidates or an indication to recommend a carrier aggregation level for one or more PDCCH candidates, for example, in combination with Figure 5 Described. For example, at 508, base station 504 can receive from UE 502 a request to reduce the aggregation level for PDCCH or a recommendation not to send PDCCH with an aggregation level higher than a threshold (e.g., 4). Reception of the request or recommendation can be, for example, by... Figure 11 The aggregation level request process component 1142 and / or receiving component 1130 of the device 1102 are executed.

[0107] In one example, in response to a UE's request, the base station may send one or more PDCCH candidates with a reduced carrier aggregation level or a recommended carrier aggregation level based on the request or indication. In such an example, the base station may receive the request or indication from the UE via UCI or uplink MAC-CE.

[0108] In another example, the base station may receive UE capabilities or power consumption limits from the UE. For example, the base station may receive an indication from the UE indicating UE capabilities (e.g., reduced UE capabilities) or power consumption limits (e.g., the maximum power allowed for UE operation). In response, the base station may transmit a PDCCH with carrier aggregation at a lower level or below a threshold.

[0109] In another example, as shown at 906, the base station can transmit a configuration for at least a subset of one or more PDCCH candidates based on a power boost associated with each carrier aggregation level, such as combining... Figure 5 Described. For example, at 514, base station 504 can configure a set of active aggregation levels (e.g., for active PDCCH candidates) corresponding to PDCCH power boosts for UE 502, wherein base station 504 can configure or associate different sets of aggregation levels corresponding to different power boost levels. The transmission of the configuration can be, for example, by Figure 11 The aggregation configuration component 1144 and / or sending component 1134 of the device 1102 are executed.

[0110] At position 908, the base station can apply power boosting to the PDCCH, for example, by combining... Figure 5 Described. For example, at 509, base station 504 can apply a power boost to one or more PDCCHs based on a power boost indication. The application of the power boost can be, for example, by Figure 11 The power boosting application component 1146 of the device 1102 in the middle is executed.

[0111] In one example, the base station can apply a power boost as a power concentration over the CORESET bandwidth where it transmits PDCCH. In such an example, the base station can apply the power boost to a single PDCCH.

[0112] In another example, the power boost can be applied to every search space for the PDCCH, or the power boost can be applied to a subset of the search space for the PDCCH.

[0113] At position 910, the base station can send a PDCCH with power boost to the UE, for example, by combining... Figure 5Described. For example, at 510, base station 504 can send a PDCCH with an indicated power boost to UE 502. The transmission of the PDCCH with the power boost can be, for example, by Figure 11 The PDCCH power boosting component 1148 and / or the transmitting component 1134 of the device 1102 in the middle are performed.

[0114] Figure 10 This is a flowchart 1000 of a wireless communication method. The method can be performed by a base station or components of a base station (e.g., base stations 102, 180, 310, 504; apparatus 1102; processing system, which may include memory 376 and may be the entire base station 310 or components of base station 310, such as TX processor 316, RX processor 370, and / or controller / processor 375). The method enables the base station to apply a power boost to the PDCCH before transmitting the PDCCH and indicate this power boost to the UE, allowing the UE to modify its PDCCH monitoring at least partially based on the indicated power boost. The method also enables the base station to associate or modify the carrier aggregation level used for transmitting the PDCCH at least partially based on the power boost applied to the PDCCH.

[0115] At position 1002, the base station can send a power boost indication for the PDCCH to the UE, for example, in conjunction with... Figure 5 Described. For example, at 506, base station 504 can send a power boost indication for PDCCH to UE 502. The transmission of the power boost indication can be, for example, Figure 11 The power boost indication component 1140 and / or transmission component 1134 of the device 1102 perform this function. In one example, the base station may transmit the power boost indication in a group common DCI, a UE-specific DCI, or a downlink MAC CE, etc.

[0116] In one example, the base station can receive from the UE a request to reduce the carrier aggregation level for one or more PDCCH candidates, or an indication to recommend a carrier aggregation level for one or more PDCCH candidates, for example, in combination with Figure 5 Described. For example, at 508, base station 504 can receive from UE 502 a request to reduce the aggregation level for PDCCH or a recommendation not to send PDCCH with an aggregation level higher than a threshold (e.g., 4). Reception of the request or recommendation can be, for example, by... Figure 11 The aggregation level request process component 1142 and / or receiving component 1130 of the device 1102 are executed.

[0117] In another example, in response to a UE's request, the base station may send one or more PDCCH candidates with a reduced carrier aggregation level or a recommended carrier aggregation level based on a request or indication. In such an example, the base station may receive the request or indication from the UE via UCI or uplink MAC-CE.

[0118] In another example, the base station may receive UE capabilities or power consumption limits from the UE. For example, the base station may receive an indication from the UE indicating UE capabilities (e.g., reduced UE capabilities) or power consumption limits (e.g., the maximum power allowed for UE operation). In response, the base station may transmit a PDCCH with carrier aggregation at a lower level or below a threshold.

[0119] In another example, the base station may transmit a configuration for at least a subset of one or more PDCCH candidates based on a power boost associated with each carrier aggregation level, such as by combining... Figure 5 Described. For example, at 514, base station 504 can configure a set of active aggregation levels (e.g., for active PDCCH candidates) corresponding to PDCCH power boosts for UE 502, wherein base station 504 can configure or associate different sets of aggregation levels corresponding to different power boost levels. The transmission of the configuration can be, for example, by Figure 11 The aggregation configuration component 1144 and / or sending component 1134 of the device 1102 are executed.

[0120] At position 1008, the base station can apply power boosting to the PDCCH, for example, by combining... Figure 5 Described. For example, at 509, base station 504 can apply a power boost to one or more PDCCHs based on a power boost indication. The application of the power boost can be, for example, by Figure 11 The power boosting application component 1146 of the device 1102 in the middle is executed.

[0121] In one example, the base station can apply a power boost as a power concentration over the CORESET bandwidth where it transmits PDCCH. In such an example, the base station can apply the power boost to a single PDCCH.

[0122] In another example, the power boost can be applied to every search space for the PDCCH, or the power boost can be applied to a subset of the search space for the PDCCH.

[0123] At position 1010, the base station can send a PDCCH with power boost to the UE, for example, by combining... Figure 5Described. For example, at 510, base station 504 can send a PDCCH with an indicated power boost to UE 502. The transmission of the PDCCH with the power boost can be, for example, by Figure 11 The PDCCH power boosting component 1148 and / or the transmitting component 1134 of the device 1102 in the middle are performed.

[0124] Figure 11 Figure 1100 illustrates an example of a hardware implementation for device 1102. Device 1102 is a BS and includes a baseband unit 1104. The baseband unit 1104 can communicate with a UE 104 via a cellular RF transceiver. The baseband unit 1104 may include computer-readable media / memory. The baseband unit 1104 is responsible for general processing, which includes executing software stored on the computer-readable media / memory. When executed by the baseband unit 1104, the software causes the baseband unit 1104 to perform the various functions described above. The computer-readable media / memory can also be used to store data manipulated by the baseband unit 1104 when executing the software. The baseband unit 1104 also includes a receiving component 1130, a communication manager 1132, and a transmitting component 1134. The communication manager 1132 includes one or more components shown. The components within the communication manager 1132 may be stored in the computer-readable media / memory and / or configured as hardware within the baseband unit 1104. The baseband unit 1104 may be a component of the BS 310 and may include at least one of the memory 376 and / or the TX processor 316, the RX processor 370, and the controller / processor 375.

[0125] Communication manager 1132 includes power boost indication component 1140, which is configured to send a power boost indication for PDCCH to the UE, for example, as in combination with Figure 9 902 and / or Figure 10 As described in 1002. Communication manager 1132 includes aggregation level request procedure component 1142, which is configured to receive from the UE a request to reduce the carrier aggregation level for one or more PDCCH candidates or an indication to recommend a carrier aggregation level for one or more PDCCH candidates, for example, as in combination with... Figure 8 As described in 904. The communication manager 1132 includes an aggregation configuration component 1144, which is configured to transmit a configuration for at least a subset of one or more PDCCH candidates based on a power boost associated with each carrier aggregation level, for example, as combined with... Figure 8As described in 906. The communication manager 1132 also includes a power boost application component 1146, which is configured to apply a power boost to the PDCCH, for example, as in conjunction with... Figure 9 908 and / or Figure 10 As described in 1008. The communication manager 1132 includes a PDCCH power boosting component 1148, which is configured to send a PDCCH with power boost to the UE, for example, as in conjunction with... Figure 9 910 and / or Figure 10 The 1010 description.

[0126] The device may include functions that perform Figure 9 and Figure 10 The flowchart shows the algorithm as an additional component in each box. Therefore, it can be executed by the component. Figure 9 and Figure 10 Each box in the flowchart, and the apparatus may include one or more of those components. A component may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0127] In one configuration, apparatus 1102 (and specifically, baseband unit 1104) includes: units for transmitting a power boost indication for PDCCH to the UE (e.g., power boost indication component 1140 and / or transmission component 1134). Apparatus 1102 includes: units for receiving from the UE a request to reduce the carrier aggregation level for one or more PDCCH candidates or an indication to recommend a carrier aggregation level for one or more PDCCH candidates (e.g., aggregation level request process component 1142 and / or receiving component 1130). Apparatus 1102 includes: units for transmitting a configuration of carrier aggregation levels for at least a subset of one or more PDCCH candidates based on a power boost associated with each carrier aggregation level (e.g., aggregation configuration component 1144 and / or transmission component 1134). Apparatus 1102 includes: units for applying a power boost to the PDCCH (e.g., power boost application component 1146). The apparatus 1102 includes: a unit for transmitting a PDCCH with power boost to the UE (e.g., a PDCCH power boost component 1148 and / or a transmission component 1134).

[0128] The aforementioned unit may be one or more components of the device 1102 configured to perform the functions described therein. As described above, the device 1102 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Therefore, in one configuration, the aforementioned unit may be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions described therein.

[0129] The following aspects are illustrative only and may be combined with, but not limited to, other aspects or teachings described herein.

[0130] Aspect 1 is an apparatus for wireless communication, the apparatus including at least one processor coupled to a memory and configured to: receive a power boost indication for a PDCCH from a base station; and monitor, based on the power boost indication from the base station, the PDCCH having the indicated power boost in at least one search space.

[0131] Aspect 2 is the apparatus according to aspect 1, wherein the power boost indication is received in a group common DCI, a UE-specific DCI, or a downlink MAC CE.

[0132] Aspect 3 is an apparatus according to any one of Aspects 1 and 2, wherein the UE performs blind decoding for at least a subset of the one or more PDCCH candidates based on a carrier aggregation level associated with one or more PDCCH candidates.

[0133] Aspect 4 is an apparatus according to any one of aspects 1 to 3, wherein the blind decoding is performed on the subset of the one or more PDCCH candidates having a carrier aggregation level below a threshold.

[0134] Aspect 5 is an apparatus according to any one of aspects 1 to 4, wherein the at least one processor is further configured to receive a configuration for the one or more PDCCH candidates based on a power boost associated with each carrier aggregation level.

[0135] Aspect 6 is an apparatus according to any one of aspects 1 to 5, wherein the at least one processor is further configured to: send a request to the base station to reduce the carrier aggregation level for the one or more PDCCH candidates or to indicate a recommended carrier aggregation level for the one or more PDCCH candidates.

[0136] Aspect 7 is an apparatus according to any one of aspects 1 to 6, wherein the at least one processor is further configured to send the request to the base station via UCI or uplink MAC CE.

[0137] Aspect 8 is an apparatus according to any one of aspects 1 to 7, wherein the at least one processor is further configured to: indicate UE capabilities or power consumption limits to the base station; and monitor the one or more PDCCH candidates having carrier aggregation levels below a threshold based on the UE capabilities or the power consumption limits.

[0138] Aspect 9 is an apparatus according to any one of aspects 1 to 8, wherein the UE capability is a reduced UE capability.

[0139] Aspect 10 is an apparatus according to any one of aspects 1 to 9, wherein the power boost indication is applied to each search space for the PDCCH.

[0140] Aspect 11 is an apparatus according to any one of aspects 1 to 10, wherein the power boost indication is applied to a subset of the search space for the PDCCH.

[0141] Aspect 12 is the apparatus according to any one of aspects 1 to 11, further comprising: a transceiver coupled to the at least one processor.

[0142] Aspect 13 is a method for implementing wireless communication in any of aspects 1 to 12.

[0143] Aspect 14 is a device for wireless communication, which includes units for implementing any one of aspects 1 to 12.

[0144] Aspect 15 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 12.

[0145] Aspect 16 is an apparatus for wireless communication, the apparatus including at least one processor coupled to a memory and configured to: send a power boost indication for a PDCCH to a UE; apply a power boost to the PDCCH; and send the PDCCH with the power boost to the UE.

[0146] Aspect 17 is the apparatus according to aspect 16, wherein the power boost indication is transmitted in a group common DCI, a UE-specific DCI, or a downlink MAC CE.

[0147] Aspect 18 is an apparatus according to any one of aspects 16 and 17, wherein the power boost is applied as a power concentration on the CORESET bandwidth in which the PDCCH is transmitted or the power boost is applied to the PDCCH.

[0148] Aspect 19 is an apparatus according to any one of aspects 16 to 18, wherein the at least one processor is further configured to: transmit a configuration of a carrier aggregation level for at least a subset of one or more PDCCH candidates based on a power boost associated with each carrier aggregation level.

[0149] Aspect 20 is an apparatus according to any one of aspects 16 to 19, wherein the at least one processor is further configured to: receive from the UE a request to reduce the carrier aggregation level for one or more PDCCH candidates or an indication to recommend a carrier aggregation level for the one or more PDCCH candidates; and transmit the one or more PDCCH candidates having the reduced carrier aggregation level or the recommended carrier aggregation level based on the request or the indication.

[0150] Aspect 21 is an apparatus according to any one of aspects 16 to 20, wherein the request or the instruction is received from the UE via UCI or uplink MAC CE.

[0151] Aspect 22 is an apparatus according to any one of aspects 16 to 21, wherein the at least one processor is further configured to: receive UE capability or power consumption limits from the UE; and transmit the one or more PDCCHs having a carrier aggregation level below a threshold.

[0152] Aspect 23 is an apparatus according to any one of aspects 16 to 22, wherein the UE capability is a reduced UE capability.

[0153] Aspect 24 is an apparatus according to any one of aspects 16 to 23, wherein the power boost indication is applied to each search space of the PDCCH.

[0154] Aspect 25 is an apparatus according to any one of aspects 16 to 24, wherein the power boost indication is applied to a subset of the search space for the PDCCH.

[0155] Aspect 26 is the apparatus according to any one of aspects 16 to 25, further comprising: a transceiver coupled to the at least one processor.

[0156] Aspect 27 is a method for implementing wireless communication in any of aspects 16 to 26.

[0157] Aspect 28 is an apparatus for wireless communication, the apparatus including units for implementing any one of aspects 16 to 26.

[0158] Aspect 29 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 16 to 26.

[0159] It should be understood that the specific order or hierarchy of the boxes in the disclosed process / flowchart is illustrative of the example method. It should be understood that the specific order or hierarchy of the boxes in the process / flowchart may be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims give the elements of the individual boxes in a sample order, and are not intended to limit one to the given specific order or hierarchy.

[0160] The foregoing description is provided to enable any person skilled in the art to implement the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are given the full scope consistent with the textual claims, wherein reference to the singular form of an element, unless expressly stated otherwise, is not intended to mean “one and only one,” but rather “one or more.” Terms such as “if,” “when,” and “at the same time as” should be interpreted as meaning “under the condition of,” rather than implying a direct temporal relationship or reaction. That is, these phrases (e.g., “when”) do not imply an immediate action in response to the occurrence of an action or during the occurrence of such action, but merely that the action will occur if the condition is met, without requiring a specific or immediate temporal constraint on the occurrence of the action. The term “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred over or superior to other aspects. Unless expressly stated otherwise, the term “some” refers to one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, 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 any 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 contain one or more members of A, B, or C. All structural and functional equivalents of the elements throughout the various aspects described in this disclosure are expressly incorporated herein by reference and intended to be included by the claims, and such structural and functional equivalents are known to or will be known later to those skilled in the art. Furthermore, nothing disclosed herein is intended to be offered to the public, whether or not such disclosure is explicitly stated in the claims. Terms such as “module,” “mechanism,” “element,” and “device” are not necessarily substitutes for the term “unit.” Therefore, no claim element should be interpreted as a unit plus a function unless the element is explicitly stated using the phrase “unit for…”.

Claims

1. An apparatus for wireless communication at a user equipment (UE), comprising: Memory; as well as At least one processor, coupled to the memory, is configured to: Receive power boost indication from the base station for the Physical Downlink Control Channel (PDCCH); At the UE, the aggregation level used to perform blind decoding of the PDCCH is constrained to be below a threshold based on the power boost indication from the base station; as well as Based on the power boost indication from the base station, monitor the PDCCH with the indicated power boost from the base station in at least one search space.

2. The apparatus according to claim 1, wherein, The power boost indication is received in Group Common Downlink Control Information (DCI), UE-specific DCI, or Downlink Media Access Control (MAC) Control Element (CE).

3. The apparatus according to claim 1, wherein, The UE performs blind decoding for at least a subset of the one or more PDCCH candidates based on a carrier aggregation level associated with one or more PDCCH candidates.

4. The apparatus according to claim 3, wherein, The UE performs the blind decoding for the subset of one or more PDCCH candidates with a carrier aggregation level below a threshold.

5. The apparatus according to claim 3, wherein, The at least one processor is further configured to: The configuration for the one or more PDCCH candidates is received based on the power boost associated with each carrier aggregation level.

6. The apparatus according to claim 3, wherein, The at least one processor is further configured to: Send a request to the base station to reduce the carrier aggregation level for the one or more PDCCH candidates or indicate a recommended carrier aggregation level for the one or more PDCCH candidates.

7. The apparatus according to claim 6, wherein, The at least one processor is configured to send the request to the base station via uplink control information (UCI) or uplink media access control (MAC) control element (CE).

8. The apparatus according to claim 1, wherein, The at least one processor is further configured to: Indicate the UE capability or power consumption limit to the base station; and Monitor one or more PDCCH candidates with a carrier aggregation level below a threshold based on the UE capability or the power consumption limit.

9. The apparatus according to claim 8, wherein, The UE capability mentioned is a reduced UE capability.

10. The apparatus according to claim 1, wherein, The power boost indication is applied to each search space for the PDCCH.

11. The apparatus according to claim 1, wherein, The power boost indication is applied to a subset of the search space for the PDCCH.

12. The apparatus according to claim 1, further comprising: A transceiver coupled to the at least one processor.

13. A method for wireless communication at a user equipment (UE), comprising: Receive power boost indication from the base station for the Physical Downlink Control Channel (PDCCH); At the UE, the aggregation level used to perform blind decoding of the PDCCH is constrained to be below a threshold based on the power boost indication from the base station; as well as Based on the power boost indication from the base station, monitor the PDCCH with the indicated power boost from the base station in at least one search space.

14. The method of claim 13, wherein the UE performs blind decoding for at least a subset of the one or more PDCCH candidates based on a carrier aggregation level associated with one or more PDCCH candidates.

15. The method according to claim 14, wherein, The UE performs the blind decoding for the subset of one or more PDCCH candidates with a carrier aggregation level below a threshold.

16. The method of claim 14, further comprising: The configuration for the one or more PDCCH candidates is received based on the power boost associated with each carrier aggregation level.

17. The method of claim 14, further comprising: Send a request to the base station to reduce the carrier aggregation level for the one or more PDCCH candidates or indicate a recommended carrier aggregation level for the one or more PDCCH candidates.

18. The method of claim 13, further comprising: Indicate the UE capability or power consumption limit to the base station; as well as Monitor one or more PDCCH candidates with a carrier aggregation level below a threshold based on the UE capability or the power consumption limit.

19. An apparatus for wireless communication at a base station, comprising: Memory; as well as At least one processor, coupled to the memory, is configured to: Send a power boost indication for the physical downlink control channel (PDCCH) to the user equipment (UE), wherein the power boost indication is used by the UE to constrain the aggregation level used to perform blind decoding of the PDCCH to be below a threshold based on the power boost indication; Power boost is applied to the PDCCH; as well as Send the PDCCH with the power boost to the UE.

20. The apparatus according to claim 19, wherein, The power boost indication is sent in a group common downlink control information (DCI), a UE-specific DCI, or a downlink media access control (MAC) control element (CE).

21. The apparatus according to claim 19, wherein, The power boost is applied as a power concentration on the control resource set (CORESET) bandwidth in which the PDCCH is transmitted, or the power boost is applied to the PDCCH.

22. The apparatus according to claim 19, wherein, The at least one processor is further configured to: The configuration for at least a subset of one or more PDCCH candidates is transmitted based on the power boost associated with each carrier aggregation level.

23. The apparatus according to claim 19, wherein, The at least one processor is further configured to: The UE receives a request to reduce the carrier aggregation level for one or more PDCCH candidates or an indication to recommend the carrier aggregation level for the one or more PDCCH candidates; and Based on the request or the instruction, send one or more PDCCH candidates with a reduced carrier aggregation level or a recommended carrier aggregation level.

24. The apparatus according to claim 23, wherein, The request or instruction is received from the UE via uplink control information (UCI) or uplink media access control (MAC) control element (CE).

25. The apparatus according to claim 19, wherein, The at least one processor is further configured to: Receive UE capability or power consumption limits from the UE; and Transmit one or more PDCCHs with a carrier aggregation level below the threshold.

26. The apparatus according to claim 25, wherein, The UE capability mentioned is a reduced UE capability.

27. The apparatus according to claim 19, wherein, The power boost indication is applied to each search space for the PDCCH.

28. The apparatus according to claim 19, wherein, The power boost indication is applied to a subset of the search space for the PDCCH.

29. The apparatus of claim 19, further comprising: A transceiver coupled to the at least one processor.

30. A method for wireless communication at a base station, comprising: Send a power boost indication for the physical downlink control channel (PDCCH) to the user equipment (UE), wherein the power boost indication is used by the UE to constrain the aggregation level used to perform blind decoding of the PDCCH to be below a threshold based on the power boost indication; Power boost to the PDCCH; and Send the PDCCH with the power boost to the UE.

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