Control channel elements and blind decoding limits for physical downlink control channel

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) can receive configuration information for a plurality of carriers, where a number of carriers of the plurality of carriers exceeds a threshold associated with a monitoring capability of the UE, where the monitoring capability is for span-based monitoring of the plurality of carriers, where a distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decodes satisfies a per-span capability of the UE, where the distribution is among a plurality of carrier sets, and where each carrier set of the plurality of carrier sets is associated with a respective subcarrier spacing and a respective span configuration. The UE can receive communications on the plurality of carriers in accordance with the distribution. Numerous other aspects are described.

Description

[0001] Cross-references to related applications

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 958,243, filed January 7, 2020, entitled "CONTROL CHANNEL ELEMENT AND BLIND DECODE LIMITS FOR PHYSICAL DOWNLINK CONTROL CHANNEL", and U.S. Non-Provisional Patent Application No. 17 / 248,042, filed January 6, 2021, entitled "CONTROL CHANNEL ELEMENT AND BLIND DECODE LIMITS FOR PHYSICAL DOWNLINK CONTROL CHANNE", which are hereby expressly incorporated by reference.

[0003] open field

[0004] Various aspects of this disclosure generally relate to wireless communications, and specifically to techniques and apparatuses for limiting control channel elements (CCE) and blind decoding (BD) for the physical downlink control channel (PDCCH).

[0005] background

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

[0007] Wireless communication networks may include several base stations (BSs) capable of supporting communication between several user equipments (UEs). UEs can communicate with the base stations (BSs) via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, while an uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a B-node, gNB, access point (AP), radio headend, transmit / receive point (TRP), new radio (NR) BS, 5G B-node, etc.

[0008] The multiple access technologies mentioned above have been adopted in various telecommunications standards to provide a common protocol enabling different user equipment to communicate at the city, country, region, and even global levels. New Radio (NR) (also known as 5G) is an enhancement set to the LTE mobile standard issued by the 3rd Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) (CP-OFDM) on the downlink (DL), CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation to improve spectral efficiency, reduce costs, improve service, utilize new spectrum, and better integrate with other open standards. However, with the continued growth in demand for mobile broadband access, there is a need for further improvements to LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and telecommunications standards that employ them.

[0009] Overview

[0010] In some aspects, a wireless communication method performed by a user equipment (UE) may include: receiving configuration information for a plurality of carriers, wherein the number of carriers exceeds a threshold associated with a monitoring capability of the UE, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, wherein the distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies the per-span capability of the UE, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and receiving communication on the plurality of carriers according to the distribution.

[0011] In some aspects, a wireless communication method performed by a base station may include: transmitting configuration information for a plurality of carriers, wherein the number of carriers exceeds a threshold associated with a monitoring capability of a UE, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, wherein the distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies the per-span capability of the UE, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and transmitting communication on the plurality of carriers according to the distribution.

[0012] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: receive configuration information for a plurality of carriers, wherein the number of carriers exceeds a threshold associated with a monitoring capability of the UE, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, wherein the distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies a per-span capability of the UE, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and receive communication on the plurality of carriers according to the distribution.

[0013] In some aspects, a non-transient computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more processors may cause the processors to: receive configuration information for a plurality of carriers, wherein the number of carriers exceeds a threshold associated with a monitoring capability of the UE, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, wherein the distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies the UE's per-span capability, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and receive communication on the plurality of carriers according to the distribution.

[0014] In some aspects, an apparatus for wireless communication may include: means for receiving configuration information for a plurality of carriers, wherein the number of carriers exceeds a threshold associated with a monitoring capability of a UE, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, wherein the distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies the per-span capability of the UE, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and means for receiving communication on the plurality of carriers according to the distribution.

[0015] In some aspects, a non-transient computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a base station, the one or more processors may cause the processors to: transmit configuration information for a plurality of carriers, wherein the number of carriers exceeds a threshold associated with a UE's monitoring capability, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, wherein the distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies the UE's per-span capability, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and transmit communication on the plurality of carriers according to the distribution.

[0016] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: transmit configuration information for a plurality of carriers, wherein the number of carriers exceeds a threshold associated with a UE's monitoring capability, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, wherein the distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies the UE's per-span capability, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and transmit communication on the plurality of carriers according to the distribution.

[0017] In some aspects, an apparatus for wireless communication may include: means for transmitting configuration information for a plurality of carriers, wherein the number of carriers exceeds a threshold associated with a monitoring capability of a UE, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, wherein the distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies the per-span capability of the UE, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and means for transmitting communication on the plurality of carriers according to the distribution.

[0018] The aspects generally include, as substantially described herein with reference to the accompanying drawings and explained as illustrated in the drawings, methods, apparatus (equipment), systems, computer program products, non-transient computer-readable media, user equipment, base stations, wireless communication equipment and / or processing systems.

[0019] The foregoing has broadly outlined the features and technical advantages of the examples according to this disclosure in an effort to facilitate a better understanding of the following detailed description. Additional features and advantages will be described thereafter. The disclosed concepts and specific examples can be readily used as the basis for modifications or the design of other structures for implementing the same purposes as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, in both their organization and manner of operation, and their associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each drawing is provided for illustrative and descriptive purposes and not for defining limitations on the claims. Brief description of the attached diagram

[0021] To gain a more detailed understanding of the features described above in this disclosure, reference can be made to various aspects of the above brief overview, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and should not be considered as limiting its scope, as other equivalent aspects are permissible in this description. Identical reference numerals in different drawings may identify the same or similar elements.

[0022] Figure 1 This is a diagram illustrating examples of wireless communication networks according to various aspects of this disclosure.

[0023] Figure 2 This is a diagram illustrating an example of communication between a base station and a UE in a wireless communication network according to various aspects of this disclosure.

[0024] Figure 3 This is a diagram illustrating an example of the span in a time slot used for monitoring the physical downlink control channel according to various aspects of this disclosure.

[0025] Figure 4 This is a diagram illustrating an example of the distribution of blind decoding or non-overlapping control channel elements among multiple carriers used for physical downlink control channel monitoring, according to various aspects of this disclosure.

[0026] Figure 5 This is a diagram illustrating an example of the span on a pair of carriers used for monitoring the physical downlink control channel according to various aspects of this disclosure.

[0027] Figure 6 These are illustrations of example processes performed by a user equipment, for example, according to various aspects of this disclosure.

[0028] Figure 7 This is a diagram illustrating, for example, an example process performed by a base station according to various aspects of this disclosure.

[0029] Detailed description

[0030] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be implemented in many different forms and should not be construed as being limited to any specific structure or function given throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or method of practice. Furthermore, the scope of this disclosure is intended to cover such apparatus or methods practiced using additional structures, functionalities, or structures and functionalities that complement or supplement the various aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be implemented by one or more elements of the claims.

[0031] Several aspects of a telecommunications system will now be described with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and explained in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0032] Figure 1 This is a diagram illustrating a wireless network 100 in which various aspects of this disclosure may be practiced. Wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. Wireless network 100 may include several BS 110s (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, B-node, gNB, 5G B-node (NB), access point, transmit / receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0033] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. Macrocells can cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UEs with a service subscription. Picocells can cover a relatively small geographic area and allow unrestricted access by UEs with a service subscription. Femtocells can cover a relatively small geographic area (e.g., a residential area) and allow restricted access by UEs associated with that femtocell (e.g., UEs in a Closed Subscriber Group (CSG)). A BS used for macrocells may be referred to as a macro BS. A BS used for picocells may be referred to as a pico BS. A BS used for femtocells may be referred to as a femto BS or a home BS. Figure 1 In the example shown, BS 110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “B node,” “5G NB,” and “cell” are used interchangeably herein.

[0034] In some respects, the cell may not be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile BS. In some respects, BSs may interconnect with each other and / or interconnect to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (such as direct physical connections, virtual networks, and / or the like of any suitable transport network).

[0035] The wireless network 100 may also include a relay station. A relay station is an entity capable of receiving data transmissions from an upstream station (e.g., a BS or a UE) and transmitting those data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE capable of relaying transmissions for other UEs. Figure 1 In the example shown, relay BS 110d can communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS can also be referred to as a relay station, relay base station, relay, etc.

[0036] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs may have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0037] Network controller 130 can be coupled to a set of Base Stations (BSs) and can provide coordination and control over these BSs. Network controller 130 can communicate with each BS via backhaul. These BSs can also communicate with each other directly or indirectly, for example, via wireless or wired backhaul.

[0038] UE 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE may be a cellular phone (e.g., a smartphone), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet, camera, gaming device, netbook, smartbook, ultrabook, medical device or equipment, biometric sensor / device, wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), entertainment device (e.g., music or video device, or satellite radio), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0039] Some UEs can be considered Machine-Type Communication (MTC) UEs, or evolved or enhanced Machine-Type Communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. Wireless nodes can provide connectivity to or to a network (e.g., a wide area network such as the Internet) or a cellular network, for example, via wired or wireless communication links. Some UEs can be considered Internet of Things (IoT) devices, and / or can be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs can be considered Customer Premises Equipment (CPE). UE 120 can be included within a housing that houses the components of UE 120, such as processor components, memory components, etc.

[0040] Generally, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific Radio Access Technology (RAT) and can operate on one or more frequencies. A RAT may also be referred to as a radio technology, air interface, etc. A frequency may also be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5GRAT networks can be deployed.

[0041] In some respects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary). For example, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this scenario, UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0042] Devices in the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating band with a first frequency range (FR1) and / or an operating band with a second frequency range (FR2), where the first frequency range (FR1) spans from 410 MHz to 7.125 GHz and the second frequency range (FR2) spans from 24.25 GHz to 52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred to as intermediate frequency bands. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as the "sub-6 GHz band." Similarly, although different from the extremely high frequency (EHF) band (30 GHz–300 GHz) designated as the "millimeter wave" band by the International Telecommunication Union (ITU), FR2 is often referred to as the "millimeter wave" band. Therefore, unless otherwise stated, it should be understood that, if used herein, the term "sub-6GHz," etc., can broadly refer to frequencies less than 6GHz, frequencies within FR1, and / or intermediate frequency band frequencies (e.g., greater than 7.125GHz). Similarly, unless otherwise stated, it should be understood that, if used herein, the term "millimeter wave," etc., can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequency band frequencies (e.g., less than 24.25GHz). It is conceivable that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0043] As indicated above, Figure 1 This is provided as an example. Other examples may differ from the one provided. Figure 1 The example described.

[0044] Figure 2 A block diagram of a design 200 for base station 110 and UE 120 is shown. Base station 110 and UE 120 can be Figure 1 One of the base stations and one of the UEs. Base station 110 may be equipped with T antennas 234a to 234t, and UE 120 may be equipped with R antennas 252a to 252r, wherein generally T≥1 and R≥1.

[0045] At base station 110, transmit processor 220 can receive data destined for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQI) received from each UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for each UE, and provide data symbols for all UEs. Transmit processor 220 can also process system information (e.g., semi-static resource allocation information (SRPI) and control information (e.g., CQI requests, grants, upper-layer signaling, etc.) and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signal (PSS) and secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and can provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 can process its own output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted via T antennas 234a to 234t, respectively. According to the aspects described in more detail below, position coding can be used to generate synchronization signals to convey additional information.

[0046] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 can obtain the received symbols from all R demodulators 254a to 254r, perform MIMO detection on these received symbols where applicable, and provide detected symbols. Receiver processor 258 can process (e.g., demodulate and decode) these detected symbols, provide the decoded data for UE 120 to data sink 260, and provide the decoded control information and system information to controller / processor 280. The channel processor can determine the Reference Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Received Quality (RSRQ), Channel Quality Indicator (CQI), and so on. In some respects, one or more components of the UE 120 may be included in the housing.

[0047] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., reports including RSRP, RSSI, RSRQ, CQI, etc.). Transmit processor 264 can also generate reference symbols for one or more reference signals. Symbols from transmit processor 264 can be pre-encoded by TX MIMO processor 266 where applicable, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to base station 110. At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 where applicable, and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. The receiver processor 238 can provide decoded data to the data sink 239 and decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0048] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2Any other component may perform one or more techniques associated with control channel elements (CCE) and blind decoding (BD) restrictions for the physical downlink control channel (PDCCH), as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component that can execute or direct, for example Figure 6 The operation of process 600 and / or other processes as described herein. Memory 242 and 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include: a non-transient computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions may be executed or direct, when executed by one or more processors of base station 110 and / or UE 120, for example... Figure 6 The operation of process 600 and / or other processes as described herein. Scheduler 246 can schedule the UE for data transmission on the downlink and / or uplink.

[0049] In some aspects, UE 120 may include: means for receiving configuration information for a plurality of carriers; means for determining, for the plurality of carriers, a distribution of at least one of a plurality of non-overlapping CCEs or a plurality of blind decodings that satisfy the UE's per-span capability; means for receiving communication on the plurality of carriers according to the distribution; means for determining, at least in part, the effective number of carriers for the given subcarrier interval based on the total number of carriers of the plurality of carriers, the number of carriers at a given subcarrier interval, and a threshold associated with the monitoring capability, wherein the threshold identifies the total number of carriers for which the UE supports per-span blind detection or CCE limitations; and means for determining, at least in part, the effective number of carriers for the given subcarrier interval based on a first carrier... The means for determining the distribution with respect to the first carrier and the second carrier based on the corresponding per-span capability of the first carrier and the second carrier, and the effective number of carriers; means for selecting corresponding time slots of the plurality of carriers; means for determining a set of values ​​for a set of carriers among the plurality of carriers based at least in part on: dividing the corresponding maximum number of blind decodings or the corresponding maximum number of non-overlapping CCEs of the corresponding span set across the corresponding time slots of the carrier set by the corresponding maximum number of blind decodings or non-overlapping CCEs indicated by the corresponding per-span capability for the corresponding span set; means for determining the distribution such that the sum of the set of values ​​does not exceed the total number of carriers for which the UE supports per-span blind detection or CCE limits; and so on. In some aspects, such means may include a combination of Figure 2One or more components of the UE120 described, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0050] In some aspects, BS 110 may include: means for transmitting configuration information for a plurality of carriers; means for determining, for the plurality of carriers, a distribution of at least one of a plurality of non-overlapping CCEs or a plurality of blind decodings satisfying the per-span capability of the UE; means for transmitting communication on the plurality of carriers according to the distribution; means for determining, at least in part, the effective number of carriers for the given subcarrier interval based on the total number of carriers of the plurality of carriers, the number of carriers at a given subcarrier interval, and a threshold associated with the monitoring capability, wherein the threshold identifies the total number of carriers for which the UE supports per-span blind detection or CCE limitations; and means for determining, at least in part, the effective number of carriers for the given subcarrier interval based on a first carrier... The means for determining the distribution with respect to the first carrier and the second carrier based on the corresponding per-span capability of the first carrier and the second carrier, and the effective number of carriers; means for selecting corresponding time slots of the plurality of carriers; means for determining a set of values ​​for a set of carriers among the plurality of carriers based at least in part on: dividing the corresponding maximum number of blind decodings or the corresponding maximum number of non-overlapping CCEs of the corresponding span set across the corresponding time slots of the carrier set by the corresponding maximum number of blind decodings or non-overlapping CCEs indicated by the corresponding per-span capability for the corresponding span set; means for determining the distribution such that the sum of the set of values ​​does not exceed the total number of carriers for which the UE supports per-span blind detection or CCE limits; and so on. In some aspects, such means may include a combination of Figure 2 One or more components of the BS 110 described, such as antenna 234, DEMOD 232, MIMO detector 236, receiver processor 238, controller / processor 240, transmitter processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.

[0051] As indicated above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 The example described.

[0052] In some RATs, two sets of scheduling downlink control information (DCI) formats are supported: a backoff DCI for downlink (DL) and / or uplink (UL) scheduling (e.g., DCI formats 1-0 and 0-0 in 5G / NR), and a non-backoff DCI for DL / UL scheduling (e.g., DCI formats 1-1 and 0-1 in 5G / NR). In some deployments (such as Enhanced Ultra-Reliable Low Latency Communication (eURLLC) that supports deployment), two additional DCI formats can be used: DCI format 2-0 for UL scheduling and DCI format 2-1 for DL ​​scheduling. The two additional DCI formats can have flexible sizes, meaning that the bit width of many fields in both additional DCI formats is configurable. Therefore, these two additional DCI formats can be configured to have a small size to improve physical downlink control channel (PDCCH) reliability or to have a larger size to improve scheduling flexibility and / or provide more functionality. The choice between these two approaches (e.g., small size or large size) can be made by the scheduler.

[0053] In some RATs (such as 3GPP Release 15 for 5G / NR), different PDCCH monitoring capabilities are defined. As an example, Feature Group (FG) 3-1 (which may be mandatory for Release 15 UEs) can instruct the UE to monitor all PDCCH candidates within the first few symbols of the data used for scheduling slots. As another example, FG 3-5b (which may be optional for Release 15 UEs) can be defined at least in part based on the concept of a span. A span is the number of consecutive symbols in a slot in which the UE is configured to monitor the PDCCH. Each PDCCH monitoring event occurs within a span. A slot can include multiple spans, and a span can include one or more PDCCH candidates. Different span configurations can be supported. Figure 3 Let's describe the span configuration in more detail.

[0054] In 5G / NR networks, base stations transmit PDCCH (e.g., including control information such as DCI) based at least in part on search space sets. A given search space set defines candidates for carrying PDCCH within that search space set, where each candidate is associated with one or more CCEs. A CCE can consist of multiple resource element groups (REGs). A REG can include a resource block and an OFDM symbol. One or more search space sets can be associated with a control resource set (CORESET). In 5G / NR networks, base stations can flexibly schedule and transmit PDCCH. In other words, PDCCH transmission in 5G / NR networks is not limited to a specific set of frequency resources and / or time resources in a given radio frame, as is the case in LTE networks. PDCCH frequency and time domain resources are configured on a per-CORESET basis. Therefore, once a UE is configured to have a CORESET, the UE has information identifying which resource blocks in the frequency domain are assigned to the search space set associated with that CORESET and information identifying the number of consecutive symbols occupied by that search space set.

[0055] To receive a PDCCH associated with one or more candidates of a given search space set that varies from UE to UE (i.e., a search space set that may carry control information that varies from one or more specific UEs), the UE may attempt to decode the PDCCH in the candidates of that search space set. For example, the UE may determine one or more CCE indices associated with the candidates and may attempt to decode the PDCCH (e.g., using a blind decoding procedure). In some cases (e.g., 3GPP Release 15 for 5G / NR), the number of non-overlapping CCEs and BDs is limited on a per-slot basis. Therefore, a large number of CCEs / BDs (in extreme cases, all CCEs / BDs) can be configured within a single span. This significantly increases the complexity for the UE, especially when attempting to conform to a processing timeline suitable for supporting Ultra-Reliable Low Latency Communication (URLLC) applications. On the other hand, if the scheduler chooses to distribute CCEs / BDs across different spans, the number of CCEs / BDs per span may be insufficient. For example, with a subcarrier spacing (SCS) of 30 kHz and a span capability of (X,Y) = (2,2), each span can have 8 CCEs. Therefore, only one candidate with a clustering level of 8 can be supported. Figure 3 To describe the span capability in more detail.

[0056] To address the aforementioned issues, 3GPP Release 16 for 5G / NR introduced PDCCH monitoring capabilities, at least partially based on UE span configuration. To improve scheduling flexibility, the number of non-overlapping CCEs and BDs per time slot has increased compared to 3GPP Release 15 for 5G / NR. Furthermore, to reduce UE complexity, per-span CCE / BD limits (also known as per-span capabilities) can be specified. This PDCCH monitoring capability may be referred to herein as span-based monitoring capability or Release 16 monitoring capability, while per-slot-based PDCCH monitoring capability may be referred to as slot-based monitoring capability or Release 15 monitoring capability. In other words, slot-based monitoring monitors which CCE / BD limits are defined per time slot, while span-based monitoring monitors which CCE / BD limits are defined per span.

[0057] A UE can report its PDCCH surveillance capabilities for a set of scenarios. For example, a UE can report its PDCCH surveillance capabilities for scenarios 1, 2, and 3. The PDCCH surveillance capability for scenario 1 indicates the number of component carriers (CCs) for which the UE can perform slot-based surveillance. The PDCCH surveillance capability for scenario 2 indicates the number of CCs for which the UE can perform span-based surveillance. The threshold number of CCs for scenario 2 can be less than 4. The PDCCH surveillance capability for scenario 3 indicates the number of CCs for which the UE can perform slot-based surveillance and the number of CCs for which the UE can perform span-based surveillance across different cells. As used herein, slot-based surveillance can refer to a per-slot surveillance configuration (e.g., version 15 surveillance configuration) where the CCE and BD limits are per-slot. Each of the CC numbers (for slot-based surveillance and span-based surveillance) can be less than 4. The sum of the number of CCs for which the UE can perform span-based surveillance and slot-based surveillance can be no greater than 4 and can be less than or not less than 4. In some cases, UEs can report the number of CCs that they can perform for span-based surveillance and slot-based surveillance separately.

[0058] In some situations, a UE may be configured with more carriers than a threshold identified by its PDCCH monitoring capabilities. For example, if a UE is configured with both version 15 and version 16 PDCCH across different carriers, and if the number of DL carriers exceeds the UE's capacity to monitor version 15 PDCCH and / or version 16 PDCCH, the number of non-overlapping CCEs to be received or BDs to be performed may exceed the UE's capacity on one or more carriers. Therefore, it may be beneficial to split CCEs and / or BDs among carriers with different PDCCH monitoring capabilities (e.g., based on slots versus spans), different SCSs, and different span modes. However, there may be ambiguity regarding how this distribution should be performed, particularly when the UE is configured with both version 15 and version 16 PDCCH.

[0059] In some respects, this distribution can be performed separately for the carrier set associated with version 16 PDCCH (e.g., version 16 carriers) and the carrier set associated with version 15 PDCCH (e.g., version 15 carriers). In this case, the UE or BS can separately determine the number of non-overlapping CCEs or BDs across carriers and per scheduled cell for carriers configured with version 15 PDCCH and version 16 PDCCH. For carriers configured with version 15 PDCCH, the value... (cap (upper limit value), cells (cells)) can represent the number of CCs for which the UE can perform slot-based surveillance, and the distribution of BD (e.g., represented by M in the following formula) and non-overlapping CCE (e.g., represented by C in the following formula) can be determined as follows:

[0060] If the UE is configured with a DL bandwidth portion (BWP) having an SCS configuration μ downlink cells, of which Therefore, the UE does not need to monitor more than [number] times per time slot for each scheduled cell on the active DL BWP of the scheduling cell. (total, slot, max) PDCCH candidates or more Non-overlapping CCEs.

[0061] If the UE is configured with a DL BWP having SCS configuration μ downlink cells, of which If the DL BWP of the activated cell is the active DL BWP of that activated cell, and the DL BWP of the deactivated cell is a DL BWP with an index provided by the firstActiveDownlinkBWP-Id for that deactivated cell, then the UE does not need to [receive information from...]. The scheduling cells of each downlink cell (various) are monitored per time slot on the active DL BWP, with more than [number missing] cells monitored per time slot. There are more than 10 PDCCH candidates Non-overlapping CCEs.

[0062] For each scheduled cell, the UE does not need to monitor more than [number] times per slot on the active DLBWP with SCS configuration μ in the scheduled cell. There are more than 10 PDCCH candidates Non-overlapping CCEs.

[0063] However, there may be ambiguity regarding how CCE and / or BD should be distributed across version 16 carriers, particularly across different span configurations and different SCSs. For example, per-span CCE and BD limitations or capabilities may present additional challenges that do not exist with the slot-based limitations or capabilities of version 15. Furthermore, different span configurations can be associated with different CCE and / or BD limitations. Therefore, version 15 techniques for distributing CCE and / or BD across carrier sets may be inefficient or inappropriate for distributing CCE and / or BD across carrier sets that exceed UE capabilities associated with version 16 PDCCHs.

[0064] Some of the techniques and apparatuses described herein provide a distribution of BD and / or CCE across multiple carriers when the number of multiple carriers associated with version 16 PDCCH exceeds the UE's capacity. For example, some of the techniques and apparatuses described herein provide a distribution of BD and / or CCE based at least in part on the corresponding SCS and / or span configuration of the multiple carriers. In this way, span-based constraints on CCE and / or BD can be implemented for carrier combinations associated with a combination of per-span monitoring or per-span and per-timeslot monitoring, which improves consistency with UE capabilities, increases scheduling flexibility, and reduces complexity.

[0065] Figure 3 This is a diagram illustrating an example of the span in a time slot used for monitoring the physical downlink control channel according to various aspects of this disclosure. Figure 3The set of time slots associated with the corresponding span configuration is shown, indicated by reference numeral 310. The span configuration can identify the minimum gap X and the maximum span duration Y between the starting symbols of two spans. If the UE monitors the PDCCH on the cell according to the combination (X,Y), the UE supports PDCCH monitoring opportunities in any symbol of the time slot with a minimum time separation of X symbols between the first symbols of two consecutive spans (including spanning time slots). A span begins at the first symbol where the PDCCH monitoring opportunity begins and ends at the last symbol where the PDCCH monitoring opportunity ends, wherein the number of symbols in the span is up to Y.

[0066] The spans corresponding to the span configurations (2,2), (4,3), and (7,3) are indicated by reference numerals 320, 330, and 340, respectively. The spans indicated by reference numeral 320 are shown using alternating diagonal shading because these spans are adjacent to each other and would otherwise be difficult to distinguish. The spans indicated by reference numerals 330 and 340 are separated by symbols not included in the spans, which are indicated by white rectangles.

[0067] The minimum gap X for span configurations (2,2), (4,3), and (7,3) is indicated by reference numerals 350, 360, and 370, respectively. It should be noted that X defines the minimum gap, therefore the starting symbols of a pair of spans associated with span configuration (2,2) can be two or more symbols separated from each other. Furthermore, the maximum span duration Y defines the maximum span duration, so span 330 can have a span of one or two symbols while still within the definition of span configuration (4,3).

[0068] Span configuration can be associated with per-span capabilities for the number of BDs and / or the number of non-overlapping CCEs within a span. The per-span capability for the number of BDs can identify the maximum number of BDs that can be configured in the spans shown by reference numerals 320 / 330 / 340, and the per-span capability for the number of non-overlapping CCEs can identify the maximum number of non-overlapping CCEs that can be configured in the spans shown by reference numerals 320 / 330 / 340. These per-span capabilities can also be referred to as BD limits and CCE limits, respectively.

[0069] The UE can report its capability to support one or more span configurations. For example, the UE can report that it supports one or more of the span configurations (2,2), (4,3), and (7,3). The UE can determine which span configuration should be used for communication based at least in part on the search space configuration. For example, the search space configuration can indicate search space candidates, and the UE can identify the span configuration aligned with the search space candidates. In cases where the search space configuration is aligned with two or more span configurations, the UE can use the largest CCE limit and / or BD limit among the CCE limits and / or BD limits associated with the two or more span configurations.

[0070] As indicated above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0071] Figure 4 This is a diagram illustrating example 400 of the distribution of blind decoding or non-overlapping control channel elements among multiple carriers used for physical downlink control channel monitoring, according to various aspects of this disclosure. As shown, example 400 includes UE 120 and BS 110. The operations described in conjunction with examples 400 and 500 are primarily described by referring to the determination of the distribution of BD. However, these operations can also be readily applied to determine the distribution of CCE. For example, a reference to variable M (which is generally used herein to refer to a constraint for BD) can also be understood to refer to variable C (which is generally used herein to refer to a constraint for CCE).

[0072] like Figure 4 As shown by reference numeral 410 in the accompanying drawings, UE 120 may be configured with multiple carriers. For example, BS 110 may provide UE 120 with configuration information for these multiple carriers. In some aspects, this configuration information may indicate whether each of the multiple carriers is associated with a version 15 (e.g., slot-based) PDCCH monitoring configuration (e.g., a version 15 carrier) or with a version 16 (e.g., span-based) PDCCH monitoring configuration (e.g., a version 16 carrier).

[0073] As indicated by reference numeral 420 in the attached figure, UE 120 may determine that the number of carriers associated with span-based BD or CCE monitoring exceeds a threshold. For example, multiple carriers may include two or more carriers associated with a PDCCH (e.g., version 16 PDCCH) configured for span-based monitoring. UE 120 may determine that the number of carriers exceeds the threshold if the number of two or more carriers exceeds a threshold associated with the monitoring capability for span-based monitoring of multiple carriers. In some aspects, this threshold may be referred to herein as... In some respects, UE 120 can perform operations related to Figure 4 The operation described by reference numerals 430 and 440 does not determine whether the number of carriers associated with each span of BD or CCE monitoring exceeds a threshold. For example, UE 120 may optionally determine whether the number of carriers exceeds a threshold.

[0074] As indicated by reference numeral 430 in the attached figure, UE 120 can determine a distribution of non-overlapping CCEs or BDs across multiple carriers that satisfy UE 120's per-span capabilities. For example, different carriers may be associated with different capabilities (e.g., for slot-based surveillance versus span-based surveillance), different SCSs, and / or different span configurations. UE 120 can determine this distribution to satisfy UE 120's per-slot surveillance capabilities while taking into account the different capabilities, SCSs, and / or span configurations. As indicated by reference numeral 440 in the attached figure, UE 120 can receive communications on multiple carriers based on this distribution. An example of determining the distribution is provided below.

[0075] In some respects, this paper refers to "hard splitting." Hard splitting can refer to dividing multiple carriers into two or more carrier groups, at least in part, based on one or more properties of multiple carriers. For example, if a carrier set is hard split at least in part based on an SCS, then all carriers in the carrier set associated with a first SCS can be placed in a first group, all carriers associated with a second SCS can be placed in a second group, and so on. As another example, multiple carriers can be hard split into a version 15 carrier group and a version 16 carrier group. The carrier group formed by hard splitting multiple carriers can be associated with a set of BDs or CCEs to be distributed within that carrier group. "Soft splitting" can be performed within a group formed by hard splitting multiple carriers. For example, the CCEs or BDs of a carrier group can be soft split within that carrier group, at least in part, based on one or more rules, as described below.

[0076] In some respects, UE 120 can distribute non-overlapping CCEs and / or BDs at least partially based on SCS and span configuration. As an example, UE 120 can hard split multiple carriers based on their SCS and span configurations to form a carrier group with the same SCS and span configuration, and can soft split the non-overlapping CCEs and / or BDs of that carrier group within a carrier group. For example, let... This represents the carrier group associated with a specific span configuration (x, y) and an SCS of type u. Let... (span) represents the per-span limit for the number of pairs of BDs for a given span under an (x,y) configuration for a carrier with an SCS of u. In this case, Give the total number of BDs for one span across each carrier with SCS = u and span configuration (x, y). Furthermore, on each scheduled carrier and for a given span, UE 120 can at least partially base its calculations on the fact that UE 120 is not expected to perform more than... The rules for each BD are used to distribute BDs and / or non-overlapping CCEs. In some respects, BS 110 is applied as long as the per-span constraint given by the minimum condition above is met. The distribution across the span. The operations described above can be performed using the equations described elsewhere in this document for determining the BD and / or CCE distribution for a version 15 carrier. UE 120 and / or BS110 can target the number of non-overlapping CCEs (e.g., using...). and To perform similar operations.

[0077] Consider the first example, where UE 120 is configured with four version 16 carriers and associated with a threshold number of five version 16 carriers. In this example, two carriers (CC1 and CC2) have a span configuration of (2,2) and an SCS of 30 kHz, and two carriers (CC3 and CC4) have a span configuration of (4,3) and an SCS of 30 kHz. Furthermore, UE 120 has per-span capability for a (2,2) span of w and a per-span capability for a (4,3) span of z. In this scenario, there are a total of [missing information - likely related to a specific capability or capability]. There are BDs. Furthermore, on each span, UE 120 can distribute no more than min{w,2.5w} = w BDs. Additionally, a span across CC3 and a span across CC4 have a total of There are BDs. On each cell, UE 120 can distribute no more than min{z,2.5z} = z BDs. Now consider the second example, where UE 120 is configured with 4 version 16 carriers and associated with a threshold number of 3 version 16 carriers (thus exceeding the capacity of UE 120). In this case, there are a total of one span across CC1 and one span across CC2. There are BDs, and in each span, UE 120 can distribute no more than min{w,1.5w} = w BDs. Furthermore, there are a total of BDs in one span across CC3 and one span across CC4. There are BDs, and on each span, UE 120 can distribute no more than min{z,1.5z} = z BDs.

[0078] In some respects, if the UE supports multiple span configurations, and if the span mode is valid for multiple supported span configurations, the UE 120 can select a span configuration with a maximum CCE / BD limit per span. In this case, a hard split of the multiple carriers based at least in part on the span configuration can take into account, or can be performed based at least in part on, the selection of a span configuration with a maximum CCE / BD limit per span.

[0079] In some aspects, UE 120 may determine M based at least in part on the corresponding spans of the first carrier and the second carrier. For example, the numerical value M may be an upper bound of a BD limit for the span, and consistency with M may be determined by referring to the number of BDs in the first span on the first carrier and the second span on the second carrier. In a first aspect, referred to as Definition 1, the first span and the second span may be any span on the first carrier and the second carrier. For example, Definition 1 may indicate that the number of BDs for any combination of spans on the first carrier and the second carrier does not exceed a BD limit for the span. In a second aspect, referred to as Definition 2, the first span may be any span on the first carrier, and the second span may be a span on the second carrier that overlaps at least partially with the first carrier in time. For example, Definition 2 may indicate that the number of BDs for any combination of a span on the first carrier and a span on the second carrier that overlaps with that span on the first carrier does not exceed a BD limit for the span. In the third aspect, referred to as Definition 3, the first span can be any span on the first carrier, and the second span can be a span on the second carrier that begins with the same symbol (e.g., the same OFDM symbol) as that span on the first carrier. For example, Definition 3 can indicate that the number of BDs for any combination of a span on the first carrier and a span on the second carrier that begins with the same OFDM symbol as that span on the first carrier does not exceed the BD limit for the span.

[0080] Figure 5 This is a diagram illustrating example 500 of the span on a pair of carriers used for monitoring the physical downlink control channel according to various aspects of this disclosure. Figure 5 The following explanations are provided to describe Definitions 1 and 2. As shown, Example 500 includes CC1 and CC2. CC1 includes span 1 and span 2, and CC2 includes span 3 and span 4. As shown, span 3 partially overlaps with span 1 and span 2 in time, although span 3 does not begin with the same OFDM symbol as span 1 or span 2. According to Definition 1 (described in conjunction with reference to reference numeral 430 above), the following conditions may be met on any combination of spans from CC1 (e.g., span 1 or span 2) and spans from CC2 (e.g., span 3 or span 4). Specifically, the number of BDs in span i of CC1 plus the number of BDs in span j of CC2 should not exceed [a certain value]. Furthermore, the number of BDs in no span should exceed the per-span capacity defined for the span configuration under consideration. In some respects, Definition 1 can be applied to fully aligned spans (such as spans associated with the same start symbol and length).

[0081] According to Definition 2, since span 1 of CC1 overlaps with span 3 of CC2 and span 2 of CC1 also overlaps with span 3 of CC2, the maximum blind decoding or non-overlapping CCE for spans 1 and 3 is... And for maximum blind decoding or non-overlapping CCE for spans 2 and 3. Furthermore, M (e.g., the maximum number of blind decodes) for each of the four spans can be less than the per-span limit configured for the corresponding span. In some respects, Definition 2 can be applied to non-fully aligned spans (such as spans associated with different start symbols and lengths).

[0082] Return to Figure 4 In some respects, UE 120 can distribute non-overlapping CCEs and / or BDs at least partially based on SCS, span configuration, and number of spans per timeslot. As an example, UE 120 can hard split multiple carriers based on SCS, span configuration, and the number of spans per timeslot to form a carrier group with the same SCS, span configuration, and number of spans per timeslot. UE 120 can soft split the non-overlapping CCEs and / or BDs of this carrier group within the carrier group. In this case, let... This represents the number of carriers that satisfy a span configuration (x, y) with n spans per time slot and configured with SCS = u. Let... This represents a constraint on the number of BDs summed over several spans of a given carrier with an (x,y) span configuration for a carrier having SCS = u. The total number of BDs can be provided across carriers with SCS = u, (x, y) span configuration and n spans per time slot.

[0083] As an example, consider version 16PDCCH. UE120 has 2 slots and is configured with 6 carriers. For this example, the BD per slot is limited to 16 for a (2,2) span configuration, 36 for a (4,3) span configuration, and 56 for a (7,3) span configuration. The 6 carriers are CC1, CC2, CC3, CC4, CC5, and CC6. CC1 and CC2 have a 30kHz SCS, a (2,2) span configuration, and 7 spans per slot, meaning the total BD limit in the slots for CC1 and CC2 is 7 * 16 = 112. CC3 has a 15kHz SCS, a (2,2) span configuration, and 2 spans per slot, meaning the total BD limit in the slots for CC3 is 2 * 16 = 32. CC4 and CC5 have a 30kHz SCS, a (4,3) span configuration, and 3 spans per slot, which means the total BD limit in the slots for CC4 and CC5 is 3*36=108. CC6 has a 15kHz SCS, a (7,3) span configuration, and 1 span per slot, which means the total BD limit in the slots for CC6 is 1*56=56.

[0084] Based on the above values, all spans across CC1 and CC2 are: In this scenario, the 16 BDs per span limit can still be adhered to. All spans across CC3 are... There are 16 BDs. In this case, the limit of 16 BDs per span can still be followed. Similar operations can be performed for CC4, CC5, and CC6.

[0085] In some respects, UE 120 can distribute non-overlapping CCEs and / or BDs at least partially based on SCS and span configuration. As an example, UE 120 can use a formula based on the SCS of multiple carriers. The multiple carriers are hard-split to form a carrier group with the same SCS. UE120 can soft-split the non-overlapping CCEs and / or BDs of the carrier group within the carrier group, at least in part, based on span configuration. In this case, for each carrier, UE120 can divide the maximum number of BDs across different spans by the per-span BD limit of the associated span configuration. UE120 can then sum these values ​​across carriers with a given SCS. UE120 can distribute the BDs and / or CCEs such that the sum is less than or equal to the value obtained by dividing the maximum number of BDs by the per-span BD limit of the associated span configuration. As an example, consider a carrier group with... UE 120. In this example, four carriers are configured with version 16 PDCCH:

[0086] • CC1 with SCS = 30kHz, span configuration (2,2) and BD limit of 16 per span

[0087] • CC2 with SCS = 30kHz, span configuration (4,3) and BD limit of 36 per span

[0088] • CC3 with SCS = 15kHz, span configuration (2,2) and BD limit of 16 per span

[0089] • CC4 with SCS = 15kHz, span configuration (7,3) and a BD limit of 56 per span.

[0090] For a 30kHz SCS, UE 120 can determine the effective carrier number as 2*2 / 4 = 1. For a 15kHz SCS, UE 120 can determine the effective carrier number as 2*2 / 4 = 1. UE 120 can then distribute the BD with the carrier having a 30kHz SCS and the BD with the carrier having a 15kHz SCS, as shown below:

[0091] • Max(BD number of spans across CC1) / 16 + Max(BD number of spans across CC2) / 36 <= 1

[0092] • Max(number of BDs across CC3) / 16 + Max(number of BDs across CC4) / 56 <= 1

[0093] • For each carrier, the span limit should be met according to the corresponding span configuration.

[0094] In some respects, UE 120 can perform soft splitting across carriers configured with version 16 PDCCH and having the same or different SCS and / or span configurations. For example, UE 120 can select the time slot of the carrier with the smallest SCS value among a plurality of carriers. For the other carriers among the plurality of carriers, UE 120 can select all time slots that overlap temporally with the time slot of the carrier with the smallest SCS value. UE 120 can obtain the maximum number of BDs across different spans across the time slot defined by the minimum SCS, and can divide the maximum number of BDs by the per-span BD limit of the span configuration associated with that span to determine the set of values ​​corresponding to the plurality of carriers. UE 120 can distribute the BDs such that the sum of the set of values ​​is less than or equal to the value indicated by pddch-BlindDetectionCA-r16.

[0095] As an example, consider a threshold of 2 for span-based monitoring (e.g., The UE is shown in the example. In this example, four carriers are configured with version 16 PDCCH: an SCS of 30 kHz, a span configuration of (2,2), and a CC1 with a BD limit of 16 per span.

[0096] • Features an SCS of 30 kHz, a span configuration of (4,3), and a BD limit of 16 per span for the CC2.

[0097] • CC3 with SCS = 15kHz, a span configuration of (2,2), and a BD limit of 16 per span.

[0098] • CC4 with SCS = 15kHz, a span configuration of (7,3), and a BD limit of 56 per span.

[0099] In the above time slot configuration, UE 120 can select a single time slot of CC3 and CC4, and can select two time slots of CC1 and CC2 that overlap with the single time slot of CC3 and CC4. For CC1, UE 120 can obtain the maximum number of BDs across the span of the two time slots, and divide it by a BD limit of 16 per span. For CC2, UE 120 can obtain the maximum number of BDs across the span of the two time slots, and divide it by a BD limit of 36 per span. For CC3, UE 120 can obtain the maximum number of BDs across the span of the time slot, and divide it by a BD limit of 16 per span. For CC3, UE 120 can obtain the maximum number of BDs across the span of the time slot, and divide it by a BD limit of 56 per span. UE 120 can distribute the BDs such that the sum of the values ​​determined above does not exceed 2. And it enables UE 120 to meet per-span capability for each span based on the SCS and span configuration of the corresponding carrier.

[0100] As indicated above, Figure 4 and Figure 5 This is provided as one or more examples. Other examples may differ from those provided. Figure 4 and 5 The content described.

[0101] Figure 6 This is a diagram illustrating, for example, an example process 600 performed by a UE according to various aspects of this disclosure. Example process 600 is an example in which a UE (e.g., UE 120, etc.) performs operations associated with CCE and BD restrictions for the PDCCH.

[0102] like Figure 6As shown, in some aspects, process 600 may include receiving configuration information for multiple carriers (block 610). For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may receive configuration information for multiple carriers as described above. In some aspects, the number of carriers exceeds a threshold associated with the UE's monitoring capability. In some aspects, the monitoring capability is used for span-based monitoring of the multiple carriers. In some aspects, the distribution of at least one of multiple non-overlapping control channel elements (CCEs) or multiple blind decoders satisfies the UE's per-span capability. For example, this distribution may be in multiple carrier sets, and each carrier set in the multiple carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration.

[0103] For example, further Figure 6 As shown, in some aspects, process 600 may include determining a distribution of at least one of a plurality of non-overlapping CCEs or a plurality of blind decodes that satisfy the UE's per-span capability for the plurality of carriers (box 620). For example, the UE (e.g., using controller / processor 280, etc.) may optionally (as indicated by the dashed border of box 620) determine a distribution of at least one of a plurality of non-overlapping CCEs or a plurality of blind decodes that satisfy the UE's per-span capability for the plurality of carriers, at least in part, based on the number of carriers exceeding a threshold, as described above.

[0104] As in Figure 6 As further illustrated, in some aspects, process 600 may include receiving communication on the plurality of carriers according to the distribution (block 630). For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may receive communication on the plurality of carriers according to the distribution, as described above.

[0105] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0106] In the first aspect, the per-span capability is a first per-span capability and specific to a first span configuration, a first carrier set of the plurality of carriers is associated with the first span configuration, and a second carrier set of the plurality of carriers is associated with a second per-span capability specific to a second span configuration.

[0107] In the second aspect, either alone or in combination with the first aspect, the distribution is based at least in part on the first per-span capacity and the second per-span capacity.

[0108] In the third aspect, either alone or in combination with one or more of the first and second aspects, the distribution is based at least in part on a rule that indicates that for a given span associated with a given subcarrier spacing and a given span configuration, the UE will not receive more than the minimum of the following two numbers of non-overlapping CCEs or will not perform more than the minimum of the following two numbers of blind decoding: the maximum number of blind decoding or non-overlapping CCEs indicated by the per-span capability for the given span, and the maximum total number of blind decoding or non-overlapping CCEs across the corresponding span of the multiple carriers.

[0109] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, the corresponding span includes a combination of a first span on a first carrier and a second span on a second carrier among the plurality of carriers.

[0110] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the corresponding span includes a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers, the second span at least partially overlapping the first span.

[0111] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the second span begins with the same modulation symbol as the first span.

[0112] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, when the UE supports multiple span configurations for a given span and the search space or control resource set configuration is aligned with the multiple span configurations, the given span configuration is the span configuration among the multiple span configurations associated with the maximum number of non-overlapping CCEs or blind decodings per span.

[0113] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the distribution is based at least in part on a rule that indicates that for a given span associated with a given subcarrier spacing, a given span configuration, and a given number of spans per time slot, the UE will not receive more than the minimum of the following two numbers of non-overlapping CCEs or will not perform more than the minimum of the following two numbers of blind decoding: the maximum number of blind decoding or non-overlapping CCEs indicated by the per-span capability for the given span, and the maximum total number of blind decoding or non-overlapping CCEs across the corresponding spans of the multiple carriers.

[0114] In the ninth aspect, determining the distribution, either alone or in combination with one or more of the first to eighth aspects, further comprises: determining the effective number of carriers for the given subcarrier interval based at least in part on the total number of carriers of the plurality of carriers, the number of carriers for a given subcarrier interval, and a threshold associated with the surveillance capability, wherein the threshold identifies the total number of carriers for which the UE supports per-span blind detection or CCE limitation; and determining the distribution with respect to the first and second carriers based at least in part on the corresponding per-span capability of the first and second carriers associated with the given subcarrier interval and the effective number of carriers.

[0115] In the tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the respective span capability of the first carrier and the second carrier is at least partially based on the respective span configuration of the first carrier and the second carrier.

[0116] In the eleventh aspect, determining the distribution, either alone or in combination with one or more of the first to tenth aspects, further includes: selecting corresponding time slots of the plurality of carriers; determining a set of values ​​for a set of carriers in the plurality of carriers based at least in part on: dividing the corresponding maximum number of blind decodes or the corresponding maximum number of non-overlapping CCEs of the corresponding span set across the corresponding time slots of the carrier set by the corresponding maximum number of blind decodes or non-overlapping CCEs indicated by the corresponding per-span capability for the corresponding span set; and determining the distribution such that the sum of the set of values ​​does not exceed a threshold associated with the surveillance capability of the UE.

[0117] In the twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the distribution is based at least in part on a rule regarding the capacity per span for each span in the respective span set.

[0118] In the thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the number of carriers of the plurality of carriers exceeds a threshold associated with the UE's monitoring capability, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, and wherein the distribution is determined at least in part based on the number of carriers exceeding the threshold.

[0119] In the fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the configuration involves a larger plurality of carriers including the plurality of carriers, wherein the larger plurality of carriers includes one or more carriers associated with a slot-based monitoring configuration, wherein the plurality of carriers are associated with a span-based monitoring configuration, and wherein the distribution is based at least in part on a hard split between the plurality of carriers and the one or more carriers.

[0120] although Figure 6 An example box of process 600 is shown, but in some respects, process 600 may include... Figure 6The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 600 can be executed in parallel.

[0121] Figure 7 This is a diagram illustrating, for example, an example process 700 performed by a base station according to various aspects of this disclosure. Example process 700 is an example in which a base station (e.g., BS 110, etc.) performs operations associated with CCE and BD restrictions for the PDCCH.

[0122] like Figure 7 As shown, in some aspects, process 700 may include transmitting configuration information for multiple carriers (block 710). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may transmit configuration information for multiple carriers as described above. In some aspects, the number of carriers exceeds a threshold associated with the UE's monitoring capability. In some aspects, the monitoring capability is used for span-based monitoring of the multiple carriers. In some aspects, the distribution of at least one of multiple non-overlapping control channel elements (CCEs) or multiple blind decoders satisfies the UE's per-span capability. For example, this distribution may be in multiple carrier sets, and each carrier set in the multiple carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration.

[0123] For example, further Figure 7 As shown, in some aspects, process 700 may optionally (as indicated by the dashed border of box 720) include determining a distribution of at least one of multiple non-overlapping CCEs or multiple blind decodes that satisfy the UE's per-span capability for the plurality of carriers (box 720). For example, a base station (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, etc.) may determine a distribution of at least one of multiple non-overlapping CCEs or multiple blind decodes that satisfy the UE's per-span capability for the plurality of carriers, as described above.

[0124] As in Figure 7 As further shown, in some aspects, process 700 may include transmitting communication on the plurality of carriers according to the distribution (block 730). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may transmit communication on the plurality of carriers according to the distribution, as described above.

[0125] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0126] In a first aspect, the number of carriers of the plurality of carriers exceeds a threshold associated with the UE’s monitoring capability, which is used for span-based monitoring of the plurality of carriers and determines the distribution based at least in part on the number of carriers exceeding the threshold.

[0127] In the second aspect, either alone or in combination with the first aspect, the per-span capability is a first per-span capability and specific to a first span configuration, a first set of carriers of the plurality of carriers is associated with the first span configuration, and a second set of carriers of the plurality of carriers is associated with a second per-span capability specific to a second span configuration.

[0128] In the third aspect, either alone or in combination with one or more of the first and second aspects, the distribution is based at least in part on the first per-span capability and the second per-span capability.

[0129] In the fourth aspect, alone or in combination with one or more of the first to third aspects, the distribution is based at least in part on a rule that indicates that for a given span associated with a given subcarrier spacing and a given span configuration, the UE will not receive more than the minimum of the following two numbers of non-overlapping CCEs or will not perform more than the minimum of the following two numbers of blind decoding: the maximum number of blind decoding or non-overlapping CCEs indicated by the per-span capability for the given span, and the maximum total number of blind decoding or non-overlapping CCEs across the corresponding span of the multiple carriers.

[0130] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the corresponding span includes a combination of a first span on a first carrier and a second span on a second carrier among the plurality of carriers.

[0131] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the corresponding span includes a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers, the second span at least partially overlapping the first span.

[0132] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the second span begins with the same code as the first span.

[0133] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, when the UE supports multiple span configurations for a given span and the search space or control resource set configuration is aligned with the multiple span configurations, the given span configuration is the span configuration among the multiple span configurations associated with the maximum number of non-overlapping CCEs or blind decodings per span.

[0134] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the distribution is based at least in part on a rule that indicates that for a given span associated with a given subcarrier spacing, a given span configuration, and a given number of spans per time slot, the UE will not receive more than the minimum of the following two numbers of non-overlapping CCEs or will not perform more than the minimum of the following two numbers of blind decoding: the maximum number of blind decoding or non-overlapping CCEs indicated by the per-span capability for the given span, and the maximum total number of blind decoding or non-overlapping CCEs across the corresponding spans of the multiple carriers.

[0135] In the tenth aspect, determining the distribution, either alone or in combination with one or more of the first to ninth aspects, further comprises: determining, at least in part, the effective number of carriers for the given subcarrier interval based on the total number of carriers of the plurality of carriers, the number of carriers for a given subcarrier interval, and a threshold associated with the monitoring capability for span-based monitoring of the plurality of carriers, wherein the threshold identifies the total number of carriers for which the UE supports per-span blind detection or CCE limitation; and determining the distribution with respect to the first carrier and the second carrier based at least in part on the corresponding per-span capability of the first carrier and the second carrier associated with the given subcarrier interval and the effective number of carriers.

[0136] In the eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, the respective span capability of the first carrier and the second carrier is at least partially based on the respective span configuration of the first carrier and the second carrier.

[0137] In the twelfth aspect, determining the distribution, either alone or in combination with one or more of the first to eleventh aspects, further includes: selecting corresponding time slots of the plurality of carriers; determining a set of values ​​for a set of carriers in the plurality of carriers based at least in part on: dividing the corresponding maximum number of blind decodes or the corresponding maximum number of non-overlapping CCEs of the corresponding span set across the corresponding time slots of the carrier set by the corresponding maximum number of blind decodes or non-overlapping CCEs indicated by the corresponding per-span capability for the corresponding span set; and determining the distribution such that the sum of the set of values ​​does not exceed a threshold associated with the surveillance capability of the UE.

[0138] In the thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the distribution is based at least in part on a rule regarding the capacity per span for each span in the respective span set.

[0139] In the fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the configuration involves a larger plurality of carriers including the plurality of carriers, wherein the larger plurality of carriers includes one or more carriers associated with a slot-based monitoring configuration, wherein the plurality of carriers are associated with a span-based monitoring configuration, and wherein the distribution is based at least in part on a hard split between the plurality of carriers and the one or more carriers.

[0140] although Figure 7 An example box of process 700 is shown, but in some respects, process 700 may include... Figure 7 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 700 can be executed in parallel.

[0141] The following provides an overview of some aspects of this disclosure:

[0142] Aspect 1: A wireless communication method performed by a user equipment (UE), comprising: receiving configuration information for a plurality of carriers, wherein the number of carriers of the plurality of carriers exceeds a threshold associated with a surveillance capability of the UE, wherein the surveillance capability is used for span-based surveillance of the plurality of carriers, wherein the distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies a per-span capability of the UE, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and receiving communication on the plurality of carriers according to the distribution.

[0143] Aspect 2: The method of Aspect 1, wherein the number of carriers of the plurality of carriers exceeds a threshold associated with the monitoring capability of the UE, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, and wherein the distribution is determined at least in part based on the number of carriers exceeding the threshold.

[0144] Aspect 3: The method of any of Aspects 1-2, wherein the per-span capability is a first per-span capability and specific to a first span configuration, wherein a first carrier set in the plurality of carrier sets is associated with the first span configuration, and wherein a second carrier set in the plurality of carrier sets is associated with a second per-span capability specific to a second span configuration.

[0145] Aspect 4: The method of aspect 3, wherein the distribution is based at least in part on the first per-span capability and the second per-span capability.

[0146] Aspect 5: The method of any of Aspects 1-4, wherein the distribution is based at least in part on a rule that indicates that for a given span associated with a given subcarrier spacing and a given span configuration, the UE will not receive more than the minimum of the following two numbers of non-overlapping CCEs or will not perform more than the minimum of the following two numbers of blind decoding: the maximum number of blind decoding or non-overlapping CCEs indicated by the per-span capability for the given span, and the maximum total number of blind decoding or non-overlapping CCEs across the corresponding span of the multiple carriers.

[0147] Aspect 6: The method of aspect 5, wherein the corresponding span includes a combination of a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers.

[0148] Aspect 7: The method of aspect 5, wherein the corresponding span includes a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers, wherein the second span at least partially overlaps with the first span.

[0149] Aspect 8: The method of aspect 7, wherein the second span begins with the same code as the first span.

[0150] Aspect 9: The method of aspect 5, wherein when the UE supports multiple span configurations for the given span and the search space or control resource set configuration is aligned with the multiple span configurations, the given span configuration is the span configuration among the multiple span configurations associated with the maximum number of non-overlapping CCEs or blind decodings per span.

[0151] Aspect 10: The method of any of Aspects 1-9, wherein the distribution is based at least in part on a rule indicating that for a given span associated with a given subcarrier spacing, a given span configuration, and a given number of spans per time slot, the UE will not receive more than the minimum of the following or will not perform more than the minimum of the following: the maximum number of blind decodings or non-overlapping CCEs indicated by the per-span capability for the given span, and the maximum total number of blind decodings or non-overlapping CCEs across the corresponding spans of the multiple carriers.

[0152] Aspect 11: The method of any of Aspects 1-10, wherein determining the distribution further comprises: determining, at least in part, the effective number of carriers for the given subcarrier interval based on the total number of carriers of the plurality of carriers, the number of carriers of a given subcarrier interval, and a threshold associated with a monitoring capability for span-based monitoring of the plurality of carriers, wherein the threshold identifies the total number of carriers for which the UE supports per-span blind detection or CCE limitation; and determining the distribution with respect to the first carrier and the second carrier based at least in part on the corresponding per-span capability of the first and second carriers associated with the given subcarrier interval and the effective number of carriers.

[0153] Aspect 12: The method of aspect 11, wherein the respective per-span capability of the first carrier and the second carrier is at least partially based on the respective span configuration of the first carrier and the second carrier.

[0154] Aspect 13: The method of any of Aspects 1-12, determining the distribution further includes: selecting corresponding time slots of the plurality of carriers; determining a set of values ​​for a set of carriers in the plurality of carriers based at least in part on: dividing the corresponding maximum number of blind decodes or the corresponding maximum number of non-overlapping CCEs of the corresponding span set across the corresponding time slots of the carrier set by the corresponding maximum number of blind decodes or non-overlapping CCEs indicated by the corresponding per-span capability for the corresponding span set; and determining the distribution such that the sum of the set of values ​​does not exceed a threshold associated with the surveillance capability of the UE.

[0155] Aspect 14: The method of aspect 13, wherein the distribution is based at least in part on a rule that does not exceed the capacity per span for each span in the corresponding span set.

[0156] Aspect 15: A method for performing wireless communication by a base station, comprising: transmitting configuration information for a plurality of carriers, wherein the number of carriers of the plurality of carriers exceeds a threshold associated with a monitoring capability of a user equipment (UE), wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, wherein for the plurality of carriers, a distribution of at least one of a plurality of non-overlapping control channel elements (CCEs) or a plurality of blind decoders satisfies the per-span capability of the UE, wherein the distribution is in a plurality of carrier sets, and wherein each carrier set in the plurality of carrier sets is associated with a corresponding subcarrier spacing and a corresponding span configuration; and transmitting communication on the plurality of carriers according to the distribution.

[0157] Aspect 16: The method of aspect 15, wherein the number of carriers of the plurality of carriers exceeds a threshold associated with the monitoring capability of the UE, wherein the monitoring capability is used for span-based monitoring of the plurality of carriers, and wherein the distribution is determined at least in part based on the number of carriers exceeding the threshold.

[0158] Aspect 17: The method of any of Aspects 15-16, wherein the per-span capability is a first per-span capability and specific to a first span configuration, wherein a first carrier group of the plurality of carriers is associated with the first span configuration, and wherein a second carrier group of the plurality of carriers is associated with a second per-span capability specific to a second span configuration.

[0159] Aspect 18: The method of aspect 17, wherein the distribution is based at least in part on a first per-span capability and a second per-span capability.

[0160] Aspect 19: The method of any of Aspects 15-18, wherein the distribution is based at least in part on a rule indicating that for a given span associated with a given subcarrier spacing and a given span configuration, the UE will not receive more than the minimum of the following two numbers of non-overlapping CCEs or will not perform more than the minimum of the following two numbers of blind decoding: the maximum number of blind decoding or non-overlapping CCEs indicated by the per-span capability for the given span, and the maximum total number of blind decoding or non-overlapping CCEs across the corresponding span of the plurality of carriers.

[0161] Aspect 20: The method of aspect 19, wherein the corresponding span includes a combination of a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers.

[0162] Aspect 21: The method of aspect 19, wherein the corresponding span includes a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers, wherein the second span at least partially overlaps with the first span.

[0163] Aspect 22: The method of aspect 19, wherein the second span begins with the same symbol as the first span.

[0164] Aspect 23: The method of aspect 17, wherein when the UE supports multiple span configurations for the given span and the search space or control resource set configuration is aligned with the multiple span configurations, the given span configuration is the span configuration among the multiple span configurations associated with the maximum number of non-overlapping CCEs or blind decodings per span.

[0165] Aspect 24: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform methods as described in one or more of aspects 1-23.

[0166] Aspect 25: An apparatus for wireless communication, comprising: a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform methods as described in one or more aspects of aspects 1-23.

[0167] Aspect 26: An apparatus for wireless communication, comprising: at least one means for performing a method as described in one or more aspects of aspects 1-23.

[0168] Aspect 27: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in one or more of aspects 1-23.

[0169] Aspect 28: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform methods as described in one or more aspects of aspects 1-23.

[0170] The foregoing disclosure provides explanations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the foregoing disclosure or may be obtained through practice.

[0171] As used herein, the term "component" is intended to be interpreted broadly as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented using hardware, firmware, and / or a combination of hardware and software.

[0172] As used in this article, depending on the context, satisfying the threshold can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0173] It will be apparent that the systems and / or methods described herein can be implemented in various forms, including hardware, firmware, and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limited in any way. Therefore, the operation and behavior of these systems and / or methods are described herein without reference to any specific software code—it is understood that software and hardware can be designed to implement these systems and / or methods, at least in part, based on the description herein.

[0174] Although specific combinations of features are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the aspects. In fact, many of these features can be combined in ways not specifically described in the claims and / or disclosed in the specification. The phrase “at least one of” refers to any combination of these items, including single members. As an example, “at least one of a, b, or c” is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination having multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0175] The elements, actions, or instructions used herein should not be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “a certain” are intended to include one or more items and are used interchangeably with “one or more.” Additionally, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.) and are used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Moreover, as used herein, the terms “have,” “contain,” “include,” etc., are intended to be open-ended terms. Furthermore, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated.

Claims

1. A user equipment (UE) for wireless communication, comprising: at least one memory; and one or more processors coupled to the at least one memory, the one or more processors individually or in any combination configured to: receive configuration information for a plurality of carriers, wherein a number of carriers of the plurality of carriers associated with span-based monitoring exceeds a threshold associated with a span-based monitoring capability of the UE, wherein a distribution of at least one of a number of non-overlapping control channel element (CCE) or a number of blind decodes satisfies a per-span capability of the UE, wherein the distribution is among a plurality of carrier sets, and wherein each carrier set of the plurality of carrier sets is associated with a respective subcarrier spacing and a respective span configuration, wherein the distribution is based at least in part on a rule that indicates, for a given span associated with a given subcarrier spacing and a given span configuration, when the UE supports multiple span configurations and a search space or control resource set configuration is aligned with the multiple span configurations, the given span configuration is a span configuration of the multiple span configurations associated with a maximum number of non-overlapping CCEs or blind decodes per span; and receive communications via the plurality of carriers in accordance with the distribution.

2. The UE of claim 1, wherein determining the distribution is based at least in part on the number of carriers exceeding the threshold.

3. The UE of claim 1, wherein, the per-span capability is a first per-span capability and is specific to a first span configuration, wherein a first carrier set of the plurality of carrier sets is associated with the first span configuration, and wherein a second carrier set of the plurality of carrier sets is associated with a second per-span capability that is specific to a second span configuration.

4. The UE of claim 3, wherein, the distribution is based at least in part on the first span configuration and the second span configuration.

5. The UE of claim 1, wherein the UE will not receive a number of non-overlapping CCEs or perform a number of blind decodes that exceeds a minimum of: a maximum number of blind decodes or non-overlapping CCEs indicated by the per-span capability for the given span, and a total number of maximum blind decodes or non-overlapping CCEs across respective spans of the plurality of carriers.

6. The UE of claim 5, wherein, the respective spans include a combination of a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers.

7. The UE of claim 5, wherein, the respective spans include a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers, wherein the second span at least partially overlaps the first span.

8. The UE of claim 7, wherein, the second span starts at a same symbol as the first span.

9. The UE of claim 1, wherein, the distribution is based at least in part on a rule that indicates, for a given span associated with a given subcarrier spacing, a given span configuration, and a given number of spans per slot, the UE will not receive a number of non-overlapping CCEs or perform a number of blind decodes that exceeds a minimum of: a maximum number of blind decodes or non-overlapping CCEs indicated by the per-span capability for the given span, and a maximum number of blind decodes or non-overlapping CCEs across respective spans of the plurality of carriers.

10. The UE of claim 1, wherein the one or more processors, when determining the distribution, are configured to: determine, based at least in part on a total number of carriers of the plurality of carriers, a number of carriers of a given subcarrier spacing, and the threshold, an effective number of carriers for the given subcarrier spacing, wherein the threshold identifies a total number of carriers for which the UE supports a per-span blind detection or CCE limit; and determine the distribution with respect to a first carrier and a second carrier associated with the given subcarrier spacing based at least in part on respective per-span capabilities of the first carrier and the second carrier and the effective number of carriers.

11. The UE of claim 10, wherein, the respective per-span capabilities of the first carrier and the second carrier are based at least in part on respective span configurations of the first carrier and the second carrier.

12. The UE of claim 1, wherein the one or more processors, when determining the distribution, are configured to: select respective time slots of the plurality of carriers; determine a set of values for a set of carriers of the plurality of carriers based at least in part on dividing a respective maximum number of blind decodes or a respective maximum number of non-overlapping CCEs across a respective set of spans of the respective time slots of the set of carriers by a respective maximum number of blind decodes or non-overlapping CCEs indicated by a respective per-span capability for the respective set of spans; and determine the distribution such that a sum of the set of values does not exceed the threshold.

13. The UE of claim 12, wherein, the distribution is based at least in part on a rule that no more than the per-span capability for each span of the respective set of spans.

14. The UE of claim 1, wherein, the configuration information relates to a larger plurality of carriers that includes the plurality of carriers, wherein the larger plurality of carriers includes one or more carriers associated with a time-slot-based monitoring configuration, wherein the plurality of carriers is associated with a span-based monitoring configuration, and wherein the distribution is based at least in part on a hard split between the plurality of carriers and the one or more carriers.

15. A network entity for wireless communication, comprising: at least one memory; and one or more processors coupled to the at least one memory, the one or more processors individually or in any combination configured to: transmitting configuration information for a plurality of carriers, wherein a number of carriers of the plurality of carriers that are associated with span-based monitoring exceeds a threshold associated with a span-based monitoring capability of a user equipment (UE), wherein a distribution of at least one of a number of non-overlapping control channel elements (CCEs) or a number of blind decodes across the plurality of carriers satisfies a per-span capability of the UE, wherein the distribution is among a plurality of carrier sets, and wherein each carrier set of the plurality of carrier sets is associated with a respective subcarrier spacing and a respective span configuration, wherein the distribution is based at least in part on a rule that indicates, for a given span associated with a given subcarrier spacing and a given span configuration, the given span configuration is a span configuration of a plurality of span configurations that is associated with a largest number of non-overlapping CCEs or blind decodes per span when the UE supports the plurality of span configurations and a search space or control resource set configuration is aligned with the plurality of span configurations; and transmitting communications via the plurality of carriers in accordance with the distribution.

16. The network entity of claim 15, wherein determining the distribution is based at least in part on the number of carriers exceeding the threshold.

17. The network entity of claim 15, wherein, the per-span capability is a first per-span capability and is specific to a first span configuration, wherein a first group of carriers of the plurality of carriers is associated with the first span configuration, and wherein a second group of carriers of the plurality of carriers is associated with a second per-span capability that is specific to a second span configuration.

18. The network entity of claim 17, wherein, the distribution is based at least in part on the first per-span capability and the second per-span capability.

19. The network entity of claim 15, wherein the UE will not receive a number of non-overlapping CCEs or perform a number of blind decodes that exceeds a minimum of: a maximum number of blind decodes or non-overlapping CCEs indicated by the per-span capability for the given span, and a maximum total number of blind decodes or non-overlapping CCEs across respective spans of the plurality of carriers.

20. The network entity of claim 19, wherein, the respective spans include a combination of a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers.

21. The network entity of claim 19, wherein, the respective spans include a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers, wherein the second span at least partially overlaps the first span.

22. The network entity of claim 21, wherein, the second span starts at a same symbol as the first span.

23. A method of wireless communication performed by a user equipment (UE), comprising: receiving configuration information for a plurality of carriers, wherein a number of carriers of the plurality of carriers that are associated with span-based monitoring exceeds a threshold associated with a span-based monitoring capability of the UE, wherein a distribution of at least one of a number of non-overlapping control channel elements (CCEs) or a number of blind decodes satisfies a per-span capability of the UE, wherein the distribution is among a plurality of carrier sets, and wherein each carrier set of the plurality of carrier sets is associated with a respective subcarrier spacing and a respective span configuration, wherein the distribution is based at least in part on a rule that indicates, for a given span associated with a given subcarrier spacing and a given span configuration, the given span configuration is a span configuration of a plurality of span configurations that is associated with a maximum number of non-overlapping CCEs or blind decodes per span when the UE supports the plurality of span configurations and a search space or control resource set configuration is aligned with the plurality of span configurations; and receiving communications via the plurality of carriers in accordance with the distribution.

24. The method of claim 23, wherein determining the distribution is based at least in part on the number of carriers exceeding the threshold.

25. The method of claim 23, wherein, the per-span capability is a first per-span capability and is specific to a first span configuration, wherein a first carrier set of the plurality of carrier sets is associated with the first span configuration, and wherein a second carrier set of the plurality of carrier sets is associated with a second per-span capability that is specific to a second span configuration.

26. The method of claim 25, wherein, the distribution is based at least in part on the first per-span capability and the second per-span capability.

27. The method of claim 23, wherein the UE will not receive a number of non-overlapping CCEs or perform a number of blind decodes that exceeds a minimum of: a maximum number of blind decodes or non-overlapping CCEs indicated by the per-span capability for the given span, and a total number of blind decodes or non-overlapping CCEs across the respective span of the plurality of carriers.

28. The method of claim 27, wherein, the respective span includes a combination of a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers.

29. The method of claim 27, wherein, the respective span includes a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers, wherein the second span at least partially overlaps the first span.

30. The method of claim 29, wherein, the second span starts at a same symbol as the first span.

31. The method of claim 23, wherein, the distribution is based at least in part on a rule that indicates, for a given span associated with a given subcarrier spacing, a given span configuration, and a given number of spans per time slot, the UE will not receive a number of non-overlapping CCEs or perform a number of blind decodes that exceeds a minimum of: a maximum number of blind decodes or non-overlapping CCEs indicated by the per-span capability for the given span, and a total number of blind decodes or non-overlapping CCEs across the respective span of the plurality of carriers.

32. The method of claim 23, wherein, determining the distribution further comprises: determining a number of active carriers for the given subcarrier spacing based at least in part on a total number of carriers of the plurality of carriers, a number of carriers of the given subcarrier spacing, and the threshold, where the threshold identifies a total number of carriers for which the UE supports per-span blind detection or CCE limitation; and determining the distribution with respect to the first carrier and the second carrier based at least in part on respective per-span capabilities of the first carrier and the second carrier and the number of active carriers.

33. The method of claim 32, wherein, the respective per-span capabilities of the first carrier and the second carrier are based at least in part on respective span configurations of the first carrier and the second carrier.

34. The method of claim 23, wherein, determining the distribution further comprises: selecting respective time slots of the plurality of carriers; determining a set of values for a set of carriers of the plurality of carriers based at least in part on dividing a respective maximum number of blind decodes or a respective maximum number of non-overlapping CCEs of a respective set of spans across respective time slots of the set of carriers by a respective maximum number of blind decodes or non-overlapping CCEs indicated by a respective per-span capability for the respective set of spans; and determining the distribution such that a sum of the set of values does not exceed the threshold.

35. The method of claim 34, wherein, the distribution is based at least in part on a rule that the per-span capability is not exceeded with respect to each span of the respective set of spans.

36. A method of wireless communication performed by a network entity, comprising: transmitting configuration information for a plurality of carriers, wherein a number of carriers of the plurality of carriers associated with span-based monitoring exceeds a threshold associated with a span-based monitoring capability of a user equipment (UE), wherein a distribution of at least one of a number of non-overlapping control channel element (CCE) or a number of blind decodes for the plurality of carriers satisfies a per-span capability of the UE, wherein the distribution is among a plurality of sets of carriers, and wherein each set of carriers of the plurality of sets of carriers is associated with a respective subcarrier spacing and a respective span configuration, wherein the distribution is based at least in part on a rule that indicates, for a given span associated with a given subcarrier spacing and a given span configuration, when the UE supports multiple span configurations and a search space or control resource set configuration is aligned with the multiple span configurations, the given span configuration is a span configuration of the multiple span configurations associated with a maximum number of non-overlapping CCEs or blind decodes per span; and transmitting a communication via the plurality of carriers in accordance with the distribution.

37. The method of claim 36, wherein determining the distribution is based at least in part on the number of carriers exceeding the threshold.

38. The method of claim 36, wherein, the per-span capability is a first per-span capability and is specific to a first span configuration, wherein a first group of carriers of the plurality of carriers is associated with the first span configuration, and wherein a second group of carriers of the plurality of carriers is associated with a second per-span capability that is specific to a second span configuration.

39. The method of claim 38, wherein, the distribution is based at least in part on the first per-span capability and the second per-span capability.

40. The method of claim 36, wherein the UE will not receive more than a minimum of the following two: a number of non-overlapping CCEs or perform more than a minimum of the following two: a maximum number of blind decodes or non-overlapping CCEs indicated by the per-span capability for the given span, and 41. The method of claim 40, wherein, a maximum total number of blind decodes or non-overlapping CCEs across the respective spans of the plurality of carriers.

42. The method of claim 40, wherein, the respective spans include a combination of a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers.

43. The method of claim 42, wherein, the respective spans include a first span on a first carrier of the plurality of carriers and a second span on a second carrier of the plurality of carriers, wherein the second span at least partially overlaps the first span. the second span starts at a same symbol as the first span. the second span starts at a same symbol as the first span.

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