Physical downlink control channel (PDCCH) aggregation across monitoring opportunities

Abstract

Certain aspects of the present disclosure provide techniques for physical downlink control channel (PDCCH) aggregation across monitoring opportunities. A method, which may be performed by a user equipment (UE), comprises: a unit for determining a policy for monitoring one or more physical downlink control channels (PDCCHs), where the policy allows a control channel element (CCE) of a single PDCCH candidate to be mapped across a plurality of PDCCH monitoring opportunities; and monitoring a signal from the network entity via the one or more PDCCHs according to the determined policy.

Description

[0001] This application is a divisional application of the application filed on September 23, 2022, with application number 202080098998.7 and invention name “Physical Downlink Control Channel (PDCCH) Aggregation Across Monitoring Opportunities”. Technical Field

[0002] Aspects of the present disclosure relate to wireless communications, and in particular to techniques for physical downlink control channel (PDCCH) aggregation across monitoring opportunities, which may be desirable for reduced capability user equipment or low complexity user equipment. Background Art

[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access systems include the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) system, the LTE Advanced (LTE-A) system, the Code Division Multiple Access (CDMA) system, the Time Division Multiple Access (TDMA) system, the Frequency Division Multiple Access (FDMA) system, the Orthogonal Frequency Division Multiple Access (OFDMA) system, the Single Carrier Frequency Division Multiple Access (SC-FDMA) system, and the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, etc.

[0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. New radio (e.g., 5GNR) is an example of an emerging telecommunication standard. NR is an enhancement set to the LTE mobile standard released by 3GPP. NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using OFDM with cyclic prefix (CP) on downlink (DL) and uplink (UL), thereby better supporting mobile broadband Internet access. For these purposes, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0005] However, as the demand for mobile broadband access continues to grow, there is a need for further improvements to LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ these technologies. Summary of the invention

[0006] The systems, methods, and devices of the present disclosure each have several aspects, no one of which is solely responsible for its desired attributes. Without limiting the scope of the present disclosure as expressed by the claims below, some features will now be briefly discussed. After considering this discussion, and particularly after reading the section entitled "Detailed Description of the Invention," one will understand how the features of the present disclosure provide advantages including PDCCH transmission and monitoring strategies desired for reduced capability UEs or low complexity UEs.

[0007] Certain aspects of the subject matter described in the present disclosure may be implemented in a method for wireless communication by a user equipment (UE). The method generally includes: determining a strategy for monitoring one or more physical downlink control channels (PDCCHs), wherein the strategy allows mapping of control channel elements (CCEs) of a single PDCCH candidate across multiple PDCCH monitoring opportunities; and monitoring a signal from a network entity via the one or more PDCCHs according to the determined strategy.

[0008] Certain aspects of the subject matter described in the present disclosure may be implemented in a method for wireless communication by a network entity. The method generally includes: determining a strategy for sending signals via one or more physical downlink control channels (PDCCHs), wherein the strategy allows mapping of control channel elements (CCEs) of a single PDCCH candidate across multiple PDCCH monitoring opportunities; and sending signals to the UE via the one or more PDCCHs according to the determined strategy.

[0009] Aspects of the present disclosure provide methods for apparatus, processors, and computer-readable media for performing the methods described herein.

[0010] To achieve the above and related purposes, one or more aspects include the features fully described and particularly pointed out in the claims below. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are only indicative of some of the various ways in which the principles of the different aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order that the above-mentioned features of the present disclosure may be fully understood, a more specific description of the invention briefly summarized above may be obtained by referring to various aspects (some of which are shown in the accompanying drawings). However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope of the present disclosure, as the description may be suitable for other equally effective aspects.

[0012] Figure 1is a block diagram conceptually illustrating an example wireless communication network in accordance with certain aspects of the present disclosure.

[0013] Figure 2 is a block diagram conceptually illustrating designs of example base stations (BSs) and user equipment (UEs) in accordance with certain aspects of the present disclosure.

[0014] Figure 3 2 is an example frame format for particular wireless communication systems (e.g., New Radio (NR)) in accordance with certain aspects of the present disclosure.

[0015] Figure 4 is an example of a control region for a particular wireless communication system (e.g., NR) according to certain aspects of the present disclosure.

[0016] Figure 5 Illustrated is a signaling flow for physical downlink control channel (PDCCH) aggregation across monitoring opportunities, in accordance with certain aspects of the present disclosure.

[0017] Figure 6 Illustrated is an example of PDCCH aggregation across monitoring opportunities in accordance with certain aspects of the present disclosure.

[0018] Figure 7

[0013] Examples of sequential and interleaved PDCCH aggregation across monitoring opportunities are described in accordance with certain aspects of the present disclosure.

[0019] Figure 8 Examples of additional offsets for PDCCH aggregation are described in accordance with certain aspects of the present disclosure.

[0020] Fig. 9 is a flow chart illustrating example operations for wireless communications by a UE in accordance with certain aspects of the present disclosure.

[0021] Fig.10 is a flow diagram illustrating example operations for wireless communications by a network entity (eg, a BS) in accordance with certain aspects of the present disclosure.

[0022] Fig.11 A communication device (eg, UE or BS) according to aspects of the present disclosure is illustrated, which may include various components configured to perform operations for the techniques disclosed herein.

[0023] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements in the drawings. It is contemplated that elements disclosed in one aspect may be beneficially utilized on other aspects without specific recitation. DETAILED DESCRIPTION

[0024] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for physical downlink control channel (PDCCH) aggregation across PDCCH monitoring opportunities. Various strategies described herein can improve PDCCH monitoring and reduce PDCCH blocking for reduced capability UEs.

[0025] The following description provides an example of PDCCH monitoring in a communication system, and does not limit the scope, applicability or examples described in the claims. Without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Various examples may be appropriately omitted, replaced or added to various processes or components. For example, the described method may be performed in an order different from the order described, and various steps may be added, omitted or combined. In addition, the features described with respect to some examples may be combined in some other examples. For example, any number of aspects described herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method that is practiced using other structures, functions or structures and functions other than the various aspects of the disclosure described herein. It should be understood that any aspect disclosed herein may be implemented by one or more elements of the claims. In this article, the word "exemplary" is used to mean "used as an example, instance or illustration". Any aspect described as "exemplary" in this article is not necessarily interpreted as being superior to or advantageous over other aspects.

[0026] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, subcarrier, frequency channel, tone, subband, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs.

[0027] The techniques described herein can be used for various wireless networks and radio technologies. Although various aspects may be described herein using terms typically associated with 3G, 4G, and / or new radio (e.g., 5G NR) wireless technologies, various aspects of the present disclosure may be applied to communication systems based on other generations.

[0028] NR access can support various wireless communication services, such as enhanced mobile broadband (eMBB) for broadband (e.g., 80 MHz and above), millimeter wave (mmW) for high carrier frequencies (e.g., 24 GHz to 53 GHz or above), massive machine type communication MTC (mMTC) for non-backward compatible MTC technology, and / or mission critical services targeting ultra-reliable low latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet their respective quality of service (QoS) requirements. In addition, these services can coexist in the same subframe. NR can support beamforming, and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. MIMO configuration in DL can support up to 8 transmit antennas with multi-layer DL transmission of up to 8 streams and up to 2 streams per UE. Multi-layer transmission with up to 2 streams per UE can be supported. Aggregation of multiple cells can be supported with up to 8 serving cells.

[0029] Figure 1 An example wireless communication network 100 is shown in which aspects of the present disclosure may be performed. For example, the wireless communication network 100 may be a NR system (e.g., a 5G NR network).

[0030] like Figure 1 As shown, according to aspects of the present disclosure, BS 110a includes a PDCCH manager 112 that applies various policies for PDCCH monitoring to a reduced capability UE. According to aspects of the present disclosure, as a reduced capability UE, UE 120a includes a PDCCH manager 122 that applies various policies for monitoring PDCCH.

[0031] like Figure 1 As shown, the wireless communication network 100 may include multiple BSs 110a-z (each also individually referred to as BS 110 or collectively referred to as BS 110 herein) and other network entities. BS 110 may provide communication coverage for a specific geographic area (sometimes referred to as a "cell"), which may be stationary or may move according to the location of the mobile BS 110. In some examples, BS 110 may be interconnected with each other and / or connected to one or more other BSs or network nodes (not shown) in the wireless communication network 100 through various types of backhaul interfaces (e.g., direct physical connections, wireless connections, virtual networks, etc.) using any suitable transport network. Figure 1In the example shown, BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. For pico cell 102x, BS 110x may be a pico BS. For femto cells 102y and 102z, BSs 110y and 110z may be femto BSs, respectively. A BS may support one or more cells.

[0032] BS 110 communicates with UEs 120a-y (each UE is also referred to herein individually as UE 120 or collectively as UE 120) in the wireless communication network 100. UEs 120 (e.g., 120x, 120y, etc.) may be dispersed throughout the wireless communication network 100, and each UE 120 may be stationary or mobile. The wireless communication network 100 may also include a relay station (e.g., relay station 110r), also referred to as a relay or the like, which receives transmissions of data and / or other information from an upstream station (e.g., BS 110a or UE 120r) and sends transmissions of data and / or other information to a downstream station (e.g., UE 120 or BS 110), or relays transmissions between UEs 120 to facilitate communication between devices.

[0033] The network controller 130 may communicate with a set of BSs 110 and provide coordination and control (e.g., via a backhaul) for these BSs 110. In various aspects, the network controller 130 may communicate with a core network 132 (e.g., a 5G core network (5GC)), which provides various network functions, such as access and mobility management, session management, user plane functions, policy control functions, authentication server functions, unified data management, application functions, network exposure functions, network repository functions, network slice selection functions, etc.

[0034] Figure 2 It is shown (for example, Figure 1 1. The wireless communication network 100 of FIG. 1 shows example components of a BS 110a and a UE 120a, which may be used to implement aspects of the present disclosure.

[0035] At BS110a, the transmit processor 220 may receive data from the data source 212 and control information from the controller / processor 240. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC-PDCCH), etc. The data may be for a physical downlink shared channel (PDSCH), etc. The medium access control (MAC)-control element (MAC-CE) is a MAC layer communication structure that may be used for control command exchange between wireless nodes. The MAC-CE may be carried in a shared channel (e.g., a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), or a physical sidelink shared channel (PSSCH)).

[0036] The processor 220 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols, such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH demodulation reference signal (DMRS), and a channel state information reference signal (CSI-RS). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols (if applicable), and may provide an output symbol stream to a modulator (MOD) 232a-232t. Each modulator 232 may process its own output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a-232t may be transmitted via antennas 234a-234t, respectively.

[0037] At UE 120a, antennas 252a-252r may receive downlink signals from BS110a and may provide received signals to demodulators (DEMODs) in transceivers 254a-254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all demodulators 254a-254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120a to a data sink 260, and provide decoded control information to a controller / processor 280.

[0038] On the uplink, at the UE 120a, a transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH)) and control information from a controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by a demodulator in a transceiver 254a-254r (e.g., for SC-FDM, etc.), and transmitted to the BS 110a. At the BS 110a, the uplink signal from the UE 120a may be received by the antenna 234, processed by the modulator 232, detected by the MIMO detector 236 if applicable, and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120a. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller / processor 240 .

[0039] Memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively.A scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0040] The antenna 252, processors 266, 258, 264 and / or controller / processor 280 of the UE 120a, and / or the antenna 234, processors 220, 230, 238 and / or controller / processor 240 of the BS 110a may be used to perform the various techniques and methods described herein. Figure 2As shown, the controller / processor 240 of BS 110a has a PDCCH manager 241, which can apply various strategies for PDCCH monitoring to UEs with reduced capabilities according to various aspects described herein. Figure 2 As shown, the controller / processor 280 of UE 120a has a PDCCH manager 281, which can apply various strategies for PDCCH monitoring according to various aspects described herein. Although shown at the controller / processor, other components of UE 120a and BS 110a can be used to perform the operations described herein.

[0041] NR can utilize orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) on the uplink and downlink. NR can support half-duplex operation using time division duplex (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) divide the system bandwidth into multiple orthogonal subcarriers, which are also commonly referred to as tones, bins, etc. Each subcarrier can be modulated with data. Modulation symbols can be sent in the frequency domain using OFDM and in the time domain using SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers can depend on the system bandwidth. The minimum resource allocation (also called a resource block (RB)) can be 12 consecutive subcarriers. The system bandwidth can also be divided into subbands. For example, a subband can cover multiple RBs. NR can support a basic subcarrier spacing (SCS) of 15KHz, and other SCSs (e.g., 30KHz, 60KHz, 120KHz, 240KHz, etc.) can be defined for the basic SCS.

[0042] Figure 3 300 is a diagram showing an example of a frame format for NR. The transmission timeline for each of the downlink and uplink may be divided into units of radio frames. Each radio frame may have a predetermined duration (e.g., 10 ms) and may be divided into 10 subframes, each of which is 1 ms and indexed from 0 to 9. Depending on the SCS, each subframe may include a variable number of slots (e.g., 1, 2, 4, 8, 16... slots). Depending on the SCS, each slot may include a variable number of symbol periods (e.g., 7, 12, or 14 symbols). The symbol period in each slot may be assigned an index. A mini slot, which may be referred to as a subslot structure, refers to a transmission time interval having a duration less than a slot (e.g., 2, 3, or 4 symbols). Each symbol in a slot may indicate a link direction (e.g., DL, UL, or flexible) for data transmission, and the link direction of each subframe may be dynamically switched. The link direction may be based on a slot format. Each slot may include DL / UL data and DL / UL control information.

[0043] In NR, synchronization signal blocks (SSBs) are transmitted. In certain aspects, SSBs may be transmitted in bursts, where each SSB in the burst corresponds to a different beam direction for UE-side beam management (e.g., including beam selection and / or beam refinement). SSBs include PSS, SSS, and two-symbol PBCH. They may be transmitted at fixed time slot locations (e.g., Figure 3 0-3) shown in . PSS and SSS can be used by UE for cell search and acquisition. PSS can provide half-frame timing, and SS can provide CP length and frame timing. PSS and SSS can provide cell identification. PBCH carries some basic system information, such as downlink system bandwidth, timing information within radio frames, SS burst set period, system frame number, etc. SSB can be organized into SS bursts to support beam scanning. Additional system information such as rest minimum system information (RMSI), system information block (SIB), and other system information (OSI) can be sent in the physical downlink shared channel (PDSCH) in certain subframes. SSB can be sent up to 64 times, for example, for mmW, up to 64 different beam directions can be sent. Multiple transmissions of SSB are called SS burst sets. SSBs in an SS burst set can be sent in the same frequency region, and SSBs in different SS burst sets can be sent in different frequency regions.

[0044] Figure 44 is an example of a control resource set (CORESET) within a carrier bandwidth across time slots in NR. As shown, a carrier bandwidth (CBW) 402 may have multiple bandwidth parts (BWPs) 404, 406 at respective subcarrier spacings (SCSs). In this example, BWP 404 is configured with a single CORESET 408, while BWP 606 is configured with CORESETs 410, 412. In various aspects, a BXP may be configured as multiple CORESETs. Each of CORESETs 408, 410, 412 includes a set of physical resources within a specific region in a downlink resource grid and is used, for example, to carry downlink control information (DCI). In a CORESET, a set of resource blocks (RBs) and the number of consecutive OFDM symbols in which the CORESET is located may be configurable using a CORESET configuration, and the time domain position of the OFDM symbol may be configurable using a corresponding PDCCH search space (SS) set. A search space set can be configured with a type of SS set (e.g., a common search space (CSS) set or a UE-specific search space (USS) set), a DCI format to monitor, monitoring opportunities, and the number of PDCCH candidates for each aggregation level (AL) in the SS set. In other words, a search space set is a collection of one or more search spaces, where each search space corresponds to an AL (e.g., the number of control channel elements for PDCCH candidates). The configuration flexibility of the control region (i.e., CORESET and associated search space set), including time, frequency, digital schemes, and operating points, enables NR to handle a wide range of use cases for control signaling (e.g., various expected delays and / or various channel conditions). In some wireless communication systems (e.g., LTE), PDCCH is allocated across the entire system bandwidth, while NR PDCCH is sent in the CORESET of the active BWP (e.g., CORESET 410, 412 of BWP 406).

[0045] Example of PDCCH aggregation across monitoring opportunities for UEs with reduced capabilities

[0046] Certain wireless communication systems (e.g., 5G NR systems) provide services with relatively high data rates and low latency (such as eMBB and / or URLLC), which may result in larger UE form factors, higher UE hardware costs, higher UE complexity (e.g., memory, processor and / or transceiver circuits), and / or higher UE power consumption. 5G NR systems also provide very flexible PDCCH monitoring configurations, such as fully configurable time resources, frequency resources, and periodicity patterns for PDCCH monitoring, as described herein with reference to Figure 4As described. Under the flexible PDCCH monitoring mechanism, the 5G NR system utilizes multiple CORESETs and SS sets and flexible quasi co-location (QCL) configurations (in the form of transmission configuration indicator (TCI) states) to provide a relatively large number of potential PDCCH decodings for tracking channel changes. Therefore, the PDCCH monitoring configuration of the UE plays a role in determining the complexity (e.g., form factor, hardware cost, circuit complexity, and / or power consumption) of the UE.

[0047] The 5G NR system may also provide services for UEs with reduced capabilities. In some cases, a UE with reduced capabilities may have reduced processing capabilities (e.g., reduced memory or processing time) and / or a lower complexity transceiver (e.g., fewer transmit and / or receive paths). Therefore, compared to UEs that support higher data rates and / or lower latency, a UE with reduced capabilities may have a smaller form factor, lower hardware cost, lower circuit complexity, and / or less power consumption. For example, a UE with reduced capabilities may be a wearable wireless communication device (such as a smart watch or activity tracker), a video surveillance device, or an Industrial Internet of Things (IIoT) device.

[0048] Due to the limited total number of CCEs in the CORESET limited by the maximum UE bandwidth, and due to the use of repetition for larger ALs (e.g., repeating AL 8 or AL 16 in multiple monitoring opportunities) to compensate for the coverage loss due to the reduced number of Rx antennas, PDCCH blocking may be an issue for reduced capability UEs. Similar issues may also occur for Dynamic Spectrum Sharing (DSS) with LTE on the same frequency, where the CORESET length is limited to one symbol to avoid collisions with LTE cell-specific reference signals (CRS).

[0049] Therefore, various embodiments of the present disclosure are directed to PDCCH aggregation across multiple monitoring opportunities to reduce PDCCH blocking when PDCCH capacity in a CORESET is limited.

[0050] Figure 5The signaling flow for PDCCH aggregation across PDCCH monitoring opportunities according to certain aspects of the present disclosure is illustrated. As shown, at 502, UE 120 may send an indication to BS110 that the UE is a UE with reduced capabilities by signaling. In some cases, the indication of reduced capabilities may be sent via radio resource control (RRC) signaling (e.g., RRC capability information) or RACH signaling (e.g., a specific preamble sequence associated with a UE with reduced capabilities). At 504, BS110 may determine one or more strategies for configuring UE 120 for PDCCH monitoring via CORESET and sending and receiving signals on BWP, as further described herein. In some aspects, the BS determines the strategy based on the DSS coexistence configuration with LTE on the same carrier frequency. In various aspects, the strategy for UEs with reduced capabilities may be pre-programmed at BS110. In some cases, at least some strategies may be included in the indication of 502. That is, the indication of 502 may also include an indication of the PDCCH monitoring capability of UE 120. At 506, according to the policy determined at 504, BS 110 may send one or more CORESET configurations to UE 120. For example, as described herein, BS 110 may configure UE 120 to perform PDCCH aggregation across monitoring opportunities. At 508, UE 120 may determine a policy for monitoring PDCCH within a BWP, as further described herein. At 510, UE 120 may monitor the PDCCH sent from BS 110 according to the determined policy. For example, the policy may allow CCEs of a single PDCCH candidate to be mapped across multiple PDCCH monitoring opportunities (PMOs). In some cases, UE 120 may receive a downlink schedule or an uplink schedule via the PDCCH at 510, and at 512, UE 120 may send an uplink signal or receive a downlink signal according to the schedule.

[0051]

[00136] In certain aspects, a PDCCH monitoring policy for a reduced capability UE may include various CORESET policies.In various aspects, a CORESET policy may specify that CCEs of a PDCCH candidate may be mapped across consecutive monitoring opportunities. Figure 6 Illustrated is an example 600 of PDCCH aggregation across monitoring opportunities in accordance with certain aspects of the present disclosure.

[0052] exist Figure 6In case (a), PDCCH aggregation is not used, while in case (b), PDCCH aggregation is used. PDCCH aggregation as shown in case (b) can reduce PDCCH blocking. For example, assuming a maximum 10MHz bandwidth and a 30kHz subcarrier spacing (SCS), there are a maximum of 12 CCEs in a CORESET. Therefore, without aggregation, only one AL8 PDCCH can be sent in each PMO, as shown in case (a). This results in unused CCEs in the PMO.

[0053] As shown in case (b), the CCEs of the PDCCH candidates can be mapped across consecutive monitoring opportunities. In case (b), the first 4 CCEs of the AL8 PDCCH candidate (for UE 3) are mapped to the first PMO at time t1, and the last 4 CCEs are mapped to the second PMO at time t2. Using PDCCH aggregation, up to three AL8 PDCCHs can be sent to 3 UEs in 2 PMOs, reducing blocking by 50%. Aggregating AL8 PDCCH candidates across two PMOs provides additional performance advantages compared to repeating AL4 PDCCH candidates in two PMOs, because AL8 PDCCH provides additional coding gain compared to AL4 PDCCH with two repetitions.

[0054] The configuration of PDCCH aggregation is AL-specific, for example, based on a selectable number of opportunities for PDCCH monitoring. In one example, if the number is 1, PDCCH aggregation is not used for AL. Otherwise, PDCCH aggregation is used and the UE is required to The PDCCH candidates associated with the AL are monitored in non-overlapping consecutive PDCCH opportunities. The CCE index for the PDCCH candidates using aggregation is based on The total number of CCEs in a PDCCH monitoring opportunity is calculated, for example, using the following equation:

[0055]

[0056] Among them, the random seed used for USS Is The starting time slot of each PDCCH opportunity is given.

[0057] Figure 7 An example 700 of sequential and interleaved PDCCH aggregation across monitoring opportunities is depicted. As shown in example 700, The CCEs in a PDCCH monitoring opportunity may be aggregated or interleaved in sequence to create a total of CCEs are used to determine PDCCH candidates. In Option 1, non-interleaved (e.g., sequential) aggregation is used because the CCEs of two PMOs (PDCCH monitoring opportunities) are aggregated sequentially between the three PDCCH candidates. In Option 2, interleaved CCE aggregation is used because the CCEs of the two PMOs are aggregated in an interleaved manner, and therefore, the CCEs of the three PDCCH candidates are interleaved with each other across the two PMOs.

[0058] For option 2, it is equivalent to dividing the ALL of PDCCH candidates into This can be achieved, for example, by dividing the AL 16 into 2 x 8 CCEs and allocating CCEs for each section in the PMO as if it were an AL The PDCCH candidates are the same.

[0059] PDCCH aggregation can also be applied to Type0-PDCCH CSS sets in search space 0, which are configured by the master information block (MIB) (rather than the system information block (SIB) or RRC). PDCCH aggregation for Type0-CSS sets can be implicitly determined by the configured size of the associated CORESET 0, for example, when the set of resource blocks of CORESET0 is equal to 24 RBs, or when the total number of CCEs in CORESET0 is less than or equal to 12.

[0060] Figure 8 Depicted is an example 800 of additional offsets for PDCCH aggregation in accordance with certain aspects of the present disclosure.

[0061] For Type0-CSS, a PMO (PDCCH monitoring opportunity) associated with a specific SSB for multiplexing mode 1 may appear in two consecutive time slots every 20 ms, and PMOs for different SSBs may be time division multiplexed (TDM) and may overlap based on the configuration. For example, Table 810 depicts such an overlap.

[0062] When PDCCH aggregation is used for Type0-CSS, SSB-specific CORESET offsets may be used to support frequency division multiplexing (FDM) of PDCCH monitoring for different SSBs. For example, as shown in block 820, if PMOs for different SSBs overlap in the time domain, additional offsets may be added to CORESET0 of other SSBs to avoid collisions. The additional offsets may be configured as part of the CORESET0 configuration or may be the same size as CORESET0.

[0063] In some embodiments, an SSB-specific CORESET offset may also be applied to PDCCH repetition cases.

[0064] Fig. 9 and 10 is a flow chart depicting example operations that may be performed by a UE and a BS for PDCCH aggregation across monitoring opportunities as described herein. Fig. 9 Operation 900 may include the above-mentioned Figure 5 The operations performed by UE 120 are as follows: Fig.10 Operation 1000 may include the above-mentioned Figure 5 The operations performed by BS 110 are described.

[0065] Fig. 9 900 for wireless communications according to certain aspects of the present disclosure. For example, the operations 900 may be performed by a UE (e.g., UE 120a in the wireless communication network 100). The operations 900 may be performed as a processor on one or more processors (e.g., Figure 2 In addition, the signal transmission and reception of the UE in operation 900 can be achieved, for example, through one or more antennas (e.g., Figure 2 In some aspects, the UE's signal transmission and / or reception may be implemented via a bus interface that acquires and / or outputs signals of one or more processors (e.g., controller / processor 280). In some embodiments, as described above with respect to Figure 5 As described, operations 900 may be performed by UE 120 .

[0066] Operations 900 begin at 902, where the UE determines a strategy for monitoring one or more physical downlink control channels (PDCCHs), where the strategy allows mapping of control channel elements (CCEs) of a single PDCCH candidate across multiple PDCCH monitoring opportunities.

[0067] At 904, the UE monitors signals from a network entity (eg, BS 110) via one or more PDCCHs according to the determined policy.

[0068] Fig.10 1 is a flow chart illustrating example operations 1000 for wireless communication according to certain aspects of the present disclosure. For example, operations 1000 may be performed by a network entity (e.g., BS 110a in wireless communication network 100). Operations 1000 may be complementary to operations 900 performed by a UE. Operations 1000 may be performed as a process on one or more processors (e.g., Figure 2In addition, in operation 1000, the signal transmission and reception of the BS can be performed, for example, through one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the BS may be implemented via a bus interface that acquires and / or outputs signals by one or more processors (e.g., controller / processor 240). In some embodiments, as described above with respect to Figure 5 As described above, operation 1000 may be performed by BS 110 .

[0069] Operations 1000 begin at 1002, where a network entity determines a strategy for transmitting signals via one or more physical downlink control channels (PDCCHs), where the strategy allows mapping of control channel elements (CCEs) of a single PDCCH candidate across multiple PDCCH monitoring opportunities.

[0070] At 1004, the network entity may send a signal to the UE via one or more PDCCHs according to the determined policy.

[0071] In some embodiments, the policy dictates that the starting CCE index for a single PDCCH candidate is based on the total number of CCEs in multiple PDCCH monitoring opportunities.

[0072] In some embodiments, the policy indicates that the starting CCE index for a single PDCCH candidate is based on a slot index of a first PDCCH monitoring opportunity among a plurality of PDCCH monitoring opportunities.

[0073] In certain embodiments, the policy dictates that the CCEs of a single PDCCH candidate are to be aggregated sequentially across multiple PDCCH monitoring opportunities.

[0074] In some embodiments, the policy dictates that the CCEs of a single PDCCH candidate are to be interleaved with the CCEs of another PDCCH candidate across multiple PDCCH monitoring opportunities.

[0075] In certain embodiments, the policy is determined based on the size of the control resource set (CORESET) and the aggregation level associated with a single PDCCH candidate.

[0076] Some embodiments further include: the UE indicating to the network entity via signaling that the UE has reduced capability, and the UE receiving a policy in response to the signaling from the network entity.

[0077] In some embodiments, the UE receives the policy via signaling from a network entity.

[0078] Certain embodiments further include determining, based on a policy, additional frequency offsets between CORESETs for different synchronization signal blocks (SSBs).

[0079] Some embodiments further include: the UE monitoring one or more PDCCHs associated with the SSB in multiple PDCCH monitoring opportunities based on the additional frequency offset.

[0080] Fig.11 A communication device 1100 (eg, a UE or a BS) is illustrated, which may include various components (eg, corresponding to functional module components) configured to perform operations for the techniques disclosed herein, such as Fig. 9 and 10 The communication device 1100 includes a processing system 1102 coupled to a transceiver 1108 (e.g., a transmitter and / or a receiver). The transceiver 1108 is configured to transmit and receive signals for the communication device 1100, such as the various signals described herein, via an antenna 1110. The processing system 1102 may be configured to perform processing functions for the communication device 1100, including processing signals received by the communication device 1100 and / or to be transmitted.

[0081] The processing system 1102 includes a processor 1104, which is coupled to a computer-readable medium / memory 1112 via a bus 1106. In some aspects, the computer-readable medium / memory 1112 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 1104, cause the processor 1104 to perform Fig. 9 and 10 , or other operations for performing the various techniques discussed herein for PDCCH aggregation across monitoring opportunities. In some aspects, the computer-readable medium / memory 1112 stores code 1114 for receiving, code 1116 for sending, code 1118 for monitoring, and / or code 1120 for determining. In some aspects, the processor 1104 has circuits configured to implement the codes stored in the computer-readable medium / memory 1112. The processor 1104 includes circuits 1124 for receiving, circuits 1126 for sending, circuits 1128 for monitoring, and / or circuits 1130 for determining.

[0082] The techniques described herein can be used for various wireless communication technologies, such as NR (e.g., 5G NR), 3GPP Long Term Evolution (LTE), LTE Advanced (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, and the like. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 includes IS-2000, IS-95, and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA networks can implement radio technologies such as NR (e.g. 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). NR is an emerging wireless communication technology under development.

[0083] In 3GPP, the term "cell" can refer to a Node B (NB) and / or NB subsystem serving the coverage area, depending on the context in which the term is used. In NR systems, the terms "cell" and BS, next-generation Node B (gNB or gNodeB), access point (AP), distributed unit (DU), carrier or transmit receive point (TRP) can be used interchangeably. BSs can provide communication coverage for macro cells, pico cells, femto cells and / or other types of cells. Macro cells can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow UEs to access unrestrictedly through service subscriptions. Pico cells can cover relatively small geographic areas and can allow UEs with service subscriptions to access unrestrictedly. Femto cells can cover relatively small geographic areas (e.g., homes) and can allow UEs associated with femto cells (e.g., UEs in a closed subscriber group (CSG), UEs of users in a home, etc.) to access restricted areas. The BS of a macro cell can be called a macro BS. The BS for a pico cell can be called a pico BS. The BS for a femto cell can be called a femto BS or a home BS.

[0084] UE may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, customer premises equipment (CPE), cellular phone, smart phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet computer, camera, gaming device, netbook, smartbook, ultrabook, instrument, medical device or medical apparatus, biometric sensor / device, wearable device (such as smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), entertainment device (e.g., music device, video device, satellite radio unit, etc.), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, global positioning system device, or any other suitable device configured to communicate via wireless or wired medium. Some UEs may be considered as machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc. that can communicate with a BS, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to or to a network, for example, via a wired or wireless communication link (e.g., a wide area network such as the Internet or a cellular network). Some UEs may be considered Internet of Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.

[0085] In some examples, access to the air interface can be scheduled. The scheduling entity (e.g., BS) allocates resources for the communication between some or all devices and apparatuses in its service area or cell. The scheduling entity can be responsible for scheduling, allocating, reconfiguring and releasing resources for one or more subordinate entities. That is, for scheduled communications, the subordinate entity utilizes the resources allocated by the scheduling entity. The base station is not the only entity that can be used as a scheduling entity. In some examples, the UE can be used as a scheduling entity, and resources can be scheduled for one or more subordinate entities (e.g., one or more other UEs), and other UEs can use the resources scheduled by the UE for wireless communication. In some examples, the UE can act as a scheduling entity in a peer-to-peer (P2P) network and / or in a mesh network. In the mesh network example, in addition to communicating with the scheduling entity, the UE can also communicate directly with each other.

[0086] The methods disclosed herein include one or more steps or actions for implementing the described methods. The steps and / or actions of the methods may be interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions may be modified without departing from the scope of the claims.

[0087] As used herein, a phrase referring to "at least one" of a list of items refers to any combination of those items, including single members. For 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 with multiples of the same elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc or any other ordering of a, b, and c).

[0088] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, estimating, processing, deriving, investigating, searching (e.g., searching in a table, database, or other data structure), verifying, etc. Also, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), etc. Also, "determining" may include resolving, selecting, choosing, establishing, etc.

[0089] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but should be given the full scope consistent with the language of the claims, wherein, unless explicitly stated, the reference to an element in the singular is not intended to mean "one and only one", but "one or more". Unless otherwise specifically stated, the term "some" refers to one or more. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure are known or will be known subsequently to a person of ordinary skill in the art, which are expressly incorporated herein by reference and are intended to be covered by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recorded in the claims. No element of a claim is to be interpreted according to Chapter VI of 35 U.S.C. § 112, unless the element is explicitly recorded using the phrase "unit for...", or the phrase "step for..." is used to record the element in the case of a method claim.

[0090] The various operations of the above method can be performed by any suitable unit capable of performing the corresponding functions. The unit may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors. Generally, in the case of operations shown in the figure, these operations may have corresponding corresponding functional module components with similar numbering.

[0091] The various illustrative logic blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but alternatively, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0092] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. The bus may include any number of interconnecting buses and bridges, depending on the specific application and overall design constraints of the processing system. The bus may link together various circuits including a processor, a machine-readable medium, and a bus interface. The bus interface may also be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In a user terminal (see Figure 1 ), a user interface (e.g., keyboard, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and are not described in detail. The processor may be implemented using one or more general and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize how to best implement the described functionality for the processing system, depending on the specific application and the overall design constraints imposed on the entire system.

[0093] If implemented in software, these functions can be stored or sent as one or more instructions or codes on a computer-readable medium. Software should be broadly interpreted as referring to instructions, data, or any combination thereof, regardless of whether it is referred to as software, firmware, middleware, microcode, hardware description language, or other. Computer-readable media include both computer storage media and communication media, and communication media include any media that facilitates the transfer of computer programs from one place to another. The processor may be responsible for managing the bus and general processing, including executing software modules stored on a machine-readable storage medium. A computer-readable storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. Alternatively, the storage medium may be integrated into the processor. As an example, a machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium having instructions stored thereon separated from a wireless node, all of which may be accessed by a processor through a bus interface. Alternatively or additionally, a machine-readable medium or any portion thereof may be integrated into a processor, such as a situation where there may be a cache and / or a general register file. Examples of machine-readable storage media may include, for example, RAM (random access memory), flash memory, ROM (read-only memory), PROM (programmable read-only memory), EPROM (erasable programmable read-only memory), EEPROM (electrically erasable programmable read-only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media, or any combination of the above. Machine-readable media may be implemented in a computer program product.

[0094] A software module may include a single instruction or many instructions, and may be distributed across several different code segments, among different programs, and between multiple storage media. A computer-readable medium may include multiple software modules. A software module includes instructions that cause a processing system to perform various functions when executed by a device such as a processor. A software module may include a sending module and a receiving module. Each software module may reside in a single storage device, or may be distributed across multiple storage devices. For example, when a triggering event occurs, a software module may be loaded from a hard disk into a RAM. During the execution of a software module, a processor may load some instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register file for execution by the processor. When the functions of a software module are mentioned below, it will be understood that such functions are implemented by the processor when instructions from the software module are executed.

[0095] Moreover, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology such as infrared (IR), radio, or microwave, the definition of medium includes the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology such as infrared, radio, and microwave. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Optical discs, where disks typically reproduce data magnetically, and discs reproduce data with lasers. Thus, in some aspects, computer readable media may include non-transitory computer readable media (e.g., tangible media). Additionally, for other aspects, computer readable media may include transitory computer readable media (e.g., signals). Combinations of the above should also be included within the scope of computer readable media.

[0096] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having instructions stored (and / or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein. For example, a computer program product for performing the operations described herein and in Fig. 9 and / or Fig.10 Instructions for the operations illustrated in the figure.

[0097] In addition, it should be understood that the modules and / or other suitable units for executing the methods and techniques described herein can be appropriately downloaded and / or otherwise obtained by the user terminal and / or base station. For example, such a device can be coupled to a server to facilitate the transmission of the units for executing the methods described herein. Alternatively, the various methods described herein can be provided via a storage unit (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk, etc.), so that the user terminal and / or base station can obtain the various methods when the storage unit is coupled or provided to the device. In addition, any other suitable technology for providing the methods and techniques described herein to the device can be used.

[0098] It is to be understood that the claims are not limited to the precise configuration and components shown above. Various modifications, changes and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A wireless communication method performed by a user equipment (UE), comprising: determining a strategy for monitoring one or more physical downlink control channels (PDCCHs), wherein the strategy allows mapping control channel elements (CCEs) of a single PDCCH candidate across multiple PDCCH monitoring opportunities; and Signals from a network entity are monitored via the one or more PDCCHs according to the determined policy.

2. The method according to claim 1, wherein: The policy indicates that a starting CCE index for the single PDCCH candidate is based on a total number of CCEs in the plurality of PDCCH monitoring opportunities.

3. The method according to claim 1, wherein: The policy indicates that a starting CCE index for the single PDCCH candidate is based on a slot index of a first PDCCH monitoring opportunity among the multiple PDCCH monitoring opportunities.

4. The method according to claim 1, wherein: The strategy indicates that the CCEs of the single PDCCH candidate are to be aggregated sequentially across the multiple PDCCH monitoring opportunities.

5. The method according to claim 1, wherein: The policy indicates that the CCEs of the single PDCCH candidate are to be interleaved with CCEs of another PDCCH candidate across the multiple PDCCH monitoring opportunities.

6. The method according to claim 1, wherein: The policy is determined based on a size of a control resource set (CORESET) and an aggregation level associated with the single PDCCH candidate.

7. The method according to claim 1, further comprising: The policy is indicated to the network entity via signaling that the UE has reduced capabilities, wherein the policy is received from the network entity in response to the signaling.

8. The method according to claim 1, wherein: The policy is received via signaling from the network entity.

9. The method according to claim 1, further comprising: Based on the strategy, additional frequency offsets between CORESETs for different synchronization signal blocks (SSBs) are determined.

10. The method according to claim 9, further comprising: Based on the additional frequency offset, one or more PDCCHs associated with the SSB are monitored in the plurality of PDCCH monitoring opportunities.

11. A method of wireless communication performed by a network entity, comprising: determining a strategy for transmitting signals via one or more physical downlink control channels (PDCCHs), wherein the strategy allows mapping of control channel elements (CCEs) of a single PDCCH candidate across multiple PDCCH monitoring opportunities; and The signal is sent to the UE via the one or more PDCCHs according to the determined policy.

12. The method according to claim 11, wherein: The policy indicates that a starting CCE index for the single PDCCH candidate is based on a total number of CCEs in the plurality of PDCCH monitoring opportunities.

13. The method according to claim 11, wherein: The policy indicates that a starting CCE index for the single PDCCH candidate is based on a slot index of a first PDCCH monitoring opportunity among the multiple PDCCH monitoring opportunities.

14. The method according to claim 11, wherein: The strategy indicates that the CCEs of the single PDCCH candidate are to be aggregated sequentially across the multiple PDCCH monitoring opportunities.

15. The method according to claim 11, wherein: The policy indicates that the CCEs of the single PDCCH candidate are to be interleaved with CCEs of another PDCCH candidate across the multiple PDCCH monitoring opportunities.

16. The method according to claim 11, wherein: The policy is determined based on a size of a control resource set (CORESET) and an aggregation level associated with the single PDCCH candidate.

17. The method according to claim 11, further comprising: Signaling is received from the UE indicating that the UE has reduced capabilities, wherein the policy is determined based on the signaling.

18. The method according to claim 11, further comprising: The policy is indicated to the UE via signaling.

19. The method according to claim 11, further comprising: Based on the strategy, additional frequency offsets between CORESETs for different synchronization signal blocks (SSBs) are determined.

20. An apparatus for wireless communication by a user equipment (UE), comprising: means for determining a strategy for monitoring one or more physical downlink control channels (PDCCHs), wherein the strategy allows mapping of control channel elements (CCEs) of a single PDCCH candidate across multiple PDCCH monitoring opportunities; and Means for monitoring signals from a network entity via the one or more PDCCHs according to the determined policy.

21. An apparatus for wireless communication by a network entity, comprising: means for determining a strategy for transmitting signals via one or more physical downlink control channels (PDCCHs), wherein the strategy allows mapping of control channel elements (CCEs) of a single PDCCH candidate across multiple PDCCH monitoring opportunities; and The method further comprises: sending the signal to the UE via the one or more PDCCHs according to the determined policy.

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