Blind decoding limit and overbooking for physical downlink control channel repetition

Abstract

Methods, systems, and devices for wireless communication are described. Generally, individual physical downlink control channel (PDCCH) candidates of a first search space (SS) set in a first transmission time interval (TTI) can be linked to corresponding PDCCH candidates of a second SS set in a second TTI. A UE can count a combination of the PDCCH candidates in the first TTI and the PDCCH candidates in the second TTI against only the blind decoding (BD) limit of the second TTI, or against the BD limit of the first TTI and the BD limit of the second TTI. The first SS set and the second SS set can be in the same TTI. With respect to the BD limit, the UE can consider the first set of PDCCH candidates, the second set of PDCCH candidates, and the combination of the first set of PDCCH candidates and the second set of PDCCH candidates together or separately, or any combination thereof.

Description

[0001] Cross-references to related applications

[0002] This patent application claims the benefits of U.S. Provisional Patent Application No. 63 / 136,295, filed January 12, 2021, entitled "BLIND DECODING LIMITS AND OVERBOOKING FOR PHYSICAL DOWNLINK CONTROL CHANNEL REPETITION," and U.S. Patent Application No. 17 / 573,250, filed January 11, 2022, entitled "BLIND DECODING LIMITS AND OVERBOOKING FOR PHYSICAL DOWNLINK CONTROL CHANNEL REPETITION," each of which has been assigned to the assignee of this application. Technical Field

[0003] The following description relates to wireless communications, including blind decoding limits and overbooking for repeated physical downlink control channels. Background Technology

[0004] Wireless communication systems are widely deployed to provide various types of telecommunications services, such as voice, video, packet data, messaging, and broadcasting. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems, such as Long Term Evolution (LTE) systems, improved LTE (LTE-A) systems, or LTE-A Pro systems, and fifth-generation (5G) systems, which may be called New Radio (NR) systems. These systems may employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each of which simultaneously supports communication for multiple communication devices, also referred to as User Equipment (UE). In some examples, the UE may support Physical Downlink Control Channel (PDCCH) repetition. Summary of the Invention

[0005] The described technology relates to improved methods, systems, devices, and apparatuses supporting blind decoding (BD) limits and over-booking for physical downlink control channel (PDCCH) repetition. Typically, a user equipment (UE) may receive a configuration message indicating that individual PDCCH candidates in a first search space (SS) set during a first transmission time interval (TTI) (e.g., a time slot or span) are linked to corresponding PDCCH candidates in a second SS set during a second TTI. The UE may be limited (e.g., by BD limits) regarding the total number of PDCCH candidates allowed to be monitored in a given TTI. The UE can count the PDCCH candidates in the first SS set against the BD limit of the first TTI, and can count the PDCCH candidates in the second SS set against the BD limit of the second TTI. The UE can count the combination of PDCCH candidates in the first TTI and the second TTI only for the BD limit of the second TTI, or it can count the combination of PDCCH candidates in the first TTI and the second TTI for both the BD limit of the first TTI and the BD limit of the second TTI (for example, the PDCCH candidates in the first SS set can be counted twice for the BD limit of the first TTI, or the PDCCH candidates in the second SS can be counted twice for the BD limit of the second TTI, or both of the above operations can be performed). Additionally, for the purpose of the oversubscription process, the UE may consider combining PDCCH candidates with other PDCCH candidates in the TTI or separating them from other PDCCH candidates.

[0006] In some examples, the techniques described herein can also describe how a UE can be configured with a first set of SS and a second set of SS within the same TTI. In such examples, the UE can consider a first set of PDCCH candidates from the first set of SS, a second set of PDCCH candidates from the second set of SS, and combinations of the first set of PDCCH candidates and the second set of PDCCH candidates in such a way that they are all together, all separate, or any combination thereof (e.g., in relation to overbooking procedures, the combination of the first set of PDCCH candidates can be combined with only one of the first set of PDCCH candidates and the second set of PDCCH candidates).

[0007] A method for wireless communication at a UE is described. The method may include: receiving a configuration message from a base station, the configuration message indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI; determining the total number of downlink control channel candidates associated with the second SS set to be counted for a BD limit of the second TTI by counting each downlink control channel candidate in the second group of downlink control channel candidates twice.

[0008] An apparatus for wireless communication at a UE is described. The apparatus may include at least one processor and a memory coupled (e.g., operatively coupled, communicatively coupled, functionally coupled, electronically coupled, or electrically coupled) to the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to: receive a configuration message from a base station indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second SS set of a second TTI following the first TTI; and determine the total number of downlink control channel candidates associated with the second SS set to be counted for a BD limit of the second TTI by counting each downlink control channel candidate in the second set of downlink control channel candidates twice.

[0009] Another apparatus for wireless communication at a UE is described. This apparatus may include: a unit for receiving a configuration message from a base station, the configuration message indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI; and a unit for determining the total number of downlink control channel candidates associated with the second SS set to be counted for a BD limit for the second TTI by counting each downlink control channel candidate in the second group of downlink control channel candidates twice.

[0010] A non-transitory computer-readable medium is described, storing code for wireless communication at a UE. The code may include instructions executable by a processor to: receive a configuration message from a base station indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second TTI following the first TTI; and determine the total number of downlink control channel candidates associated with the second SS set to be counted for a BD limit of the second TTI by counting each downlink control channel candidate in the second set of downlink control channel candidates twice.

[0011] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining that an overbooking condition exists associated with an overbooking of downlink control channel candidates within the second TTI; and evaluating the overbooking condition based on a corresponding number of downlink control channel candidates in the second set and each combination of each downlink control channel candidate in the first set and a corresponding downlink control channel candidate in the second set, wherein the monitoring of downlink control channel transmission may be further based on the evaluation of the overbooking condition.

[0012] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, units, or instructions for performing the following: determining whether the overbooking condition is satisfied can be done by evaluating together the total number of downlink control channel candidates associated with the second SS set.

[0013] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, units, or instructions for performing the following: determining whether the overbooking condition is satisfied can be done by separately evaluating the combination of the second set of downlink control channel candidates and each downlink control channel candidate in the first set of downlink control channel candidates with the corresponding downlink control channel candidate in the second set of downlink control channel candidates.

[0014] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining, based on the configuration message, to count the first set of downlink control channel candidates, the second set of downlink control channel candidates, and the third set of downlink control channel candidates for a BD limit per TTI, wherein the third set of downlink control channel candidates includes combinations of each downlink control channel candidate in the first set of downlink control channel candidates and corresponding downlink control channel candidates in the second set of downlink control channel candidates; monitoring downlink control channel transmission during the second TTI based on the count of the BD limit for the second TTI, counting the second set of downlink control channel candidates and the third set of downlink control channel candidates for the BD limit for the second TTI; and monitoring downlink control channel transmission during the second TTI based on the count of the BD limit for the second TTI.

[0015] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining that an overbooking condition exists associated with an overbooking of downlink control channel candidates within the first TTI; evaluating the overbooking condition based on a corresponding number of downlink control channel candidates in the first group and each combination of each downlink control channel candidate in the first group with a corresponding downlink control channel candidate in the second group, wherein the monitoring of downlink control channel transmission may be further based on the evaluation of the overbooking condition.

[0016] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, evaluating the overbooking condition may also include operations, features, units, or instructions for determining whether the overbooking condition is satisfied by evaluating together the total number of downlink control channel candidates associated with the first SS set.

[0017] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, units, or instructions for performing the following: determining whether the overbooking condition is satisfied can be done by separately evaluating the first set of downlink control channel candidates and the combination of each downlink control channel candidate in the first set of downlink control channel candidates with the corresponding downlink control channel candidate in the second set of downlink control channel candidates.

[0018] In some examples of the methods, apparatuses and non-transitory computer-readable media described herein, the second TTI includes one of a time slot or a time span, and the first TTI includes one of a time slot or a time span.

[0019] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving instructions from the base station for performing the following: combinations of each downlink control channel candidate in the first set of downlink control channel candidates with corresponding downlink control channel candidates in the second set of downlink candidates, and the number of downlink control channel candidates in the second set of downlink control channel candidates, separately for the BD limit of the second TTI, wherein determining the total number of downlink control channel candidates associated with the second SS set may be based on the instructions.

[0020] In some examples of the methods, apparatuses and non-transitory computer-readable media described herein, the other downlink control channel candidates associated with the second TTI correspond to a third set of SSs, or a UE-specific SS, or a common SS.

[0021] A method for wireless communication at a UE is described. The method may include: receiving a configuration message from a base station, the configuration message indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second SS set of the TTI; determining that there exists an overbooking condition associated with overbooking of downlink control channel candidates within the TTI; evaluating the overbooking condition based on the corresponding numbers of the first set of downlink control channel candidates and the second set of downlink control channel candidates; and monitoring downlink control channel transmission during the TTI based on the evaluation of the overbooking condition.

[0022] An apparatus for wireless communication at a UE is described. The apparatus may include at least one processor and a memory coupled (e.g., operatively coupled, communicatively coupled, functionally coupled, electronically coupled, or electrically coupled) to the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to: receive a configuration message from a base station indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second SS set of the TTI; determine that an overbooking condition exists associated with overbooking of downlink control channel candidates within the TTI; evaluate the overbooking condition based on the corresponding numbers of the first set of downlink control channel candidates and the second set of downlink control channel candidates; and monitor downlink control channel transmissions during the TTI based on the evaluation of the overbooking condition.

[0023] Another apparatus for wireless communication at a UE is described. This apparatus may include: a unit for receiving a configuration message from a base station, the configuration message indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of the TTI; a unit for determining that there is an overbooking condition associated with overbooking of downlink control channel candidates within the TTI; a unit for evaluating the overbooking condition based on the corresponding numbers of the first group of downlink control channel candidates and the second group of downlink control channel candidates; and a unit for monitoring downlink control channel transmission during the TTI based on the evaluation of the overbooking condition.

[0024] A non-transitory computer-readable medium is described, storing code for wireless communication at a UE. The code may include instructions executable by a processor to: receive a configuration message from a base station indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second SS set of the TTI; determine that an overbooking condition exists associated with overbooking of downlink control channel candidates within the TTI; evaluate the overbooking condition based on the corresponding numbers of the first set of downlink control channel candidates and the second set of downlink control channel candidates; and monitor downlink control channel transmissions during the TTI based on the evaluation of the overbooking condition.

[0025] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, units, or instructions for determining whether the overbooking condition is met by evaluating the number of a first group of downlink control channel candidates, a second group of downlink control channel candidates, and a third group of downlink control channel candidates, wherein the third group includes combinations of each downlink control channel candidate in the first group of downlink control channel candidates and corresponding downlink control channel candidates in the second group of downlink control channel candidates.

[0026] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for: comparing a first index value associated with the first SS set and a second index value associated with the second SS set; determining whether the oversubscription condition is met by counting each downlink control channel candidate in the second set of downlink control channel candidates twice, based on the determination that the second index value associated with the second SS set is greater than the first index value associated with the first SS set.

[0027] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, units, or instructions for performing the following: determining whether the overbooking condition is satisfied by evaluating together the number of the first set of downlink control channel candidates and each combination of each downlink control channel candidate in the first set of downlink control channel candidates with the corresponding downlink control channel candidate in the second set of downlink control channel candidates.

[0028] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for: comparing the last monitoring time of the first SS set with the last monitoring time of the second SS set; determining that the last monitoring time of the first SS set may be later in time than the last monitoring time of the second SS set; and determining, based on the determination that the last monitoring time of the first SS set may be later in time than the last monitoring time of the second SS set, whether to monitor the number of downlink control channel candidates in the first group, and each combination of each downlink control channel candidate in the first group with the corresponding downlink control channel candidate in the second group.

[0029] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: comparing a first index value associated with the first SS set and a second index value associated with the second SS set; and determining the number of the second group of downlink control channel candidates and the third group of downlink control channel candidates to be monitored together based on determining that the second index value associated with the second SS set is greater than the first index value associated with the first SS set.

[0030] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: comparing a first index value of a first control resource set associated with the first SS set and a second index of a second control resource set associated with the second SS set; and based on the comparison, determining whether to monitor the number of the first set of downlink control channel candidates, and each combination of each downlink control channel candidate in the first set of downlink control channel candidates with a corresponding downlink control channel candidate in the second set of downlink control channel candidates.

[0031] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, units, or instructions for performing the following: determining whether the overbooking condition is satisfied by evaluating, separately from each other, the first set of downlink control channel candidates, the second set of downlink control channel candidates, and combinations of each downlink control channel candidate in the first set of downlink control channel candidates and corresponding downlink control channel candidates in the second set of downlink control channel candidates.

[0032] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the TTI includes one of a time slot or a time span. Attached Figure Description

[0033] Figure 1 Examples of wireless communication systems supporting blind decoding (BD) limits and overbooking for repeated Physical Downlink Control Channel (PDCCH) operations are shown in accordance with various aspects of this disclosure.

[0034] Figure 2 Examples of wireless communication systems supporting BD restrictions and overbooking for PDCCH repetition are shown in accordance with various aspects of this disclosure.

[0035] Figure 3 Examples of monitoring schemes for repeated BD limits and overbooking in PDCCH are shown, based on various aspects of this disclosure.

[0036] Figure 4 Based on various aspects of this disclosure, examples of monitoring schemes supporting BD limits and overbooking for PDCCH repetition are shown.

[0037] Figure 5 and Figure 6 A block diagram illustrating the support for PDCCH duplicate BD restrictions and overbooking of equipment in accordance with various aspects of this disclosure.

[0038] Figure 7 A block diagram is shown illustrating a communication manager that supports various aspects of this disclosure regarding BD limits and overbooking for PDCCH duplication.

[0039] Figure 8 A schematic diagram of a system that supports BD restrictions and overbooking for PDCCH repetitions is shown in accordance with various aspects of this disclosure.

[0040] Figures 9 to 11 A flowchart illustrating methods for supporting repeated BD restrictions and overbooking for PDCCH in accordance with various aspects of this disclosure is shown. Detailed Implementation

[0041] Some wireless communication systems can support Physical Downlink Control Channel (PDCCH) monitoring and PDCCH repetition. In some examples, the number of PDCCH candidates that can be monitored within a time slot or span may be limited by blind decoding (BD) constraints. However, in some cases, overbooking can be allowed (e.g., configuring more PDCCH candidates than the BD limit for a Transmission Time Interval (TTI)). Overbooked User Equipment (UE) can identify the configured PDCCH candidates and determine whether to monitor the configured PDCCH candidates based on one or more rules.

[0042] Additionally, the UE can be configured with PDCCH repetition. In this case, the base station can transmit control information multiple times across multiple repetitions. Regarding PDCCH repetition, PDCCH candidates in a first search space (SS) set can be linked to PDCCH candidates in a second SS set. The UE can perform a soft combination procedure by combining control signaling received in the first PDCCH candidate in the first SS set with control signaling received in the second SS set. Therefore, the UE can monitor (e.g., the first set of PDCCH candidates in the first SS set), the second set of PDCCH candidates (e.g., the second SS set), and a third set of PDCCH candidates (e.g., by combining the first set of PDCCH candidates with the second set of PDCCH candidates). In such an example, the UE may need to refer to BD limits to determine how to count the third set of PDCCH candidates and may also determine how to perform an oversubscription procedure based on this count.

[0043] The UE can be configured to count the BD limits of PDCCH candidates for each TTI (e.g., time slot or span) for two links used for repetition as three monitored PDCCH candidates. If the monitoring timings of the SS sets for the two links are in different TTIs, the UE can count a third set of PDCCH candidates (a combined set of PDCCH candidates consisting of the first and second repetitions) for the BD limits of both TTIs. Alternatively, in some examples, the UE can count only the third set of PDCCH candidates for the BD limits of one TTI (e.g., the second or subsequent TTI). The UE can then consider overbooking procedures for both TTIs. For example, the individual PDCCH candidates associated with the second TTI can be counted together with the combined PDCCH candidates, and the UE can determine whether to monitor or discard all items in the second and third sets of PDCCH candidates.

[0044] When the monitoring of the linked SS set occurs within a single TTI, the UE can count the repetition of combinations (e.g., the third set of PDCCH candidates) against the BD limit of that TTI. (For example, the UE can count the first set of PDCCH candidates twice against the BD limit of the TTI, or count the second set of PDCCH candidates twice against the TTI limit, or perform both of the above operations.) In such cases, the UE can evaluate the oversubscription conditions of each set of PDCCH candidates individually or in various combinations. For example, the UE can evaluate (e.g., determine whether to monitor or discard) all items in the first set, second set, and third set of PDCCH candidates together. Alternatively, the UE can evaluate (e.g., determine whether to monitor or discard) each set of PDCCH candidates individually. Or, the UE can evaluate (e.g., determine whether to monitor or discard) one set of PDCCH candidates (e.g., the first set of PDCCH candidates) individually, and can evaluate the second set and third set of PDCCH candidates together (e.g., the second set of PDCCH candidates and a combination of the first set and the second set of PDCCH candidates).

[0045] The techniques described herein can be implemented to achieve one or more advantages. For example, the described techniques can lead to improved system efficiency, more efficient use of available resources, more efficient use of UE computing resources, and so on.

[0046] The various aspects of this disclosure are initially described in the context of wireless communication systems. These aspects are further illustrated and described with reference to wireless communication systems and monitoring schemes. The various aspects of this disclosure are further illustrated and described through apparatus diagrams, system diagrams, and flowcharts relating to BD limits and over-prescription for PDCCH repetition.

[0047] Figure 1 Examples of wireless communication systems 100 supporting BD limits and over-prescription for PDCCH duplication are shown according to various aspects of this disclosure. Wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, wireless communication system 100 may be a Long Term Evolution (LTE) network, an improved LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0048] Base station 105 may be distributed across a geographical area to form wireless communication system 100, and may be devices of different forms or with different capabilities. Base station 105 and UE 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110, on which UE 115 and base station 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographical area where base station 105 and UE 115 may support signal transmission according to one or more radio access technologies.

[0049] UE 115 may be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, mobile, or both at different times. UE 115 may be devices of different forms or with different capabilities. Figure 1 Some example UE 115s are shown in the document. The UE 115 described herein may be able to communicate with various types of devices, such as other UE 115s, base station 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), such as... Figure 1 As shown.

[0050] Base station 105 can communicate with core network 130, communicate with each other, or perform both of the above operations. For example, base station 105 can be connected to core network 130 through one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base station 105 can communicate with each other directly (e.g., directly between base stations 105) or indirectly (e.g., via core network 130) on backhaul links 120 (e.g., via X2, Xn, or other interfaces), or perform both of the above operations. In some examples, backhaul link 120 can be or includes one or more radio links.

[0051] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, a base station transceiver, a radio base station, an access point, a wireless transceiver, a node B, an evolved node B (eNodeB, eNB), a next-generation node B or a gigabit node B (any of which may be referred to as gNB), a home node B, a home evolved node B, or other suitable terms.

[0052] UE 115 may include or may be referred to as a mobile device, wireless device, remote device, handheld device, or user device, or some other appropriate term, wherein “device” may also be referred to as a unit, station, terminal, or client, etc. UE115 may also include, or be referred to as, personal electronic devices, such as cellular phones, personal digital assistants (PDAs), multimedia / entertainment devices (e.g., radios, MP3 players, or video devices), cameras, gaming devices, navigation / positioning devices (e.g., GNSS (Global Navigation Satellite System) devices (based on, for example, GPS, BeiDou, GLONASS, or Galileo, or terrestrial devices), tablet computers, laptop computers, personal computers, netbooks, smartbooks, personal computers, smart devices, wearable devices (e.g., smartwatches, smart clothing, smart glasses, virtual reality goggles, smart wristbands, smart jewelry (e.g., smart rings, smart bracelets)), drones, robots / robotic devices, vehicles, in-vehicle equipment, meters (e.g., parking meters, electricity meters, gas meters, water meters), monitors, air pumps, electrical appliances (e.g., kitchen appliances, washing machines, dryers), location tags, medical / healthcare devices, implants, sensors / actuators, displays, or any other suitable devices configured to communicate via wireless or wired media. In some examples, UE 115 may include or may be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, etc., and the above devices can be implemented in various items such as home appliances, vehicles, instruments, etc.

[0053] The UE 115 described in this document may be able to communicate with various types of devices, such as other UE 115s that can sometimes act as repeaters, as well as base station 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, and other examples, such as... Figure 1 As shown.

[0054] UE 115 and base station 105 can communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating the operation of the carrier, user data, or other signaling. Wireless communication system 100 can support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used in conjunction with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers.

[0055] In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition or control signaling that coordinates operation against other carriers. The carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located based on a channel raster used for UE 115 discovery. The carrier may operate in standalone mode, in which case the UE 115 may perform initial acquisition and connection via the carrier, or the carrier may operate in non-standalone mode, in which case different carriers (e.g., the same or different radio access technologies) are used to anchor the connection.

[0056] The communication link 125 shown in the wireless communication system 100 may include uplink transmission from UE 115 to base station 105, or downlink transmission from base station 105 to UE 115. The carrier may carry downlink communication or uplink communication (e.g., in FDD mode) or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).

[0057] A carrier can be associated with a specific bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth can be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth can be one of a plurality of defined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) can have a hardware configuration that supports communication on a specific carrier bandwidth, or may be configurable to support communication on one carrier bandwidth in a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 can be configured to operate on a portion (e.g., a subband, BWP) or the entire carrier bandwidth.

[0058] The signal waveform transmitted on a carrier can consist of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as Orthogonal Frequency Division Multiplexing (OFDM) or Discrete Fourier Transform Extended OFDM (DFT-S-OFDM). In a system employing MCM, a resource element can consist of one symbol period (e.g., the duration of a modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element can depend on the modulation scheme (e.g., the order of the modulation scheme, the decoding rate of the modulation scheme, or both). Therefore, the more resource elements UE 115 receives and the higher the order of the modulation scheme, the higher the data rate can be for UE 115. Wireless communication resources can refer to a combination of radio frequency spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers can further increase the data rate or data integrity used for communication with UE 115.

[0059] It can support one or more digital schemes (numerologies) for a carrier, where the digital scheme can include subcarrier spacing (Δf) and a cyclic prefix. A carrier can be divided into one or more BWPs with the same or different digital schemes. In some examples, UE 115 can be configured with multiple BWPs. In some examples, a single BWP for a carrier can be active at a given time, and communication for UE 115 can be restricted to one or more active BWPs.

[0060] It can be in the basic unit of time (which may refer to, for example, T) s =1 / (Δf) max ·N f The sampling period is ) seconds, where Δfmax This can represent the maximum supported subcarrier spacing, and N. f The time interval for base station 105 or UE 115 can be represented as a multiple of the maximum supported Discrete Fourier Transform (DFT) size. The time interval for communication resources can be organized based on radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0061] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., this depends on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple micro-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N) f (Number) sampling periods. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.

[0062] A subframe, time slot, micro-time slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a TTI. In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Alternatively or additionally, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0063] Physical channels can be multiplexed on a carrier using various techniques. For example, time division multiplexing (TDM), frequency division multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels on a downlink carrier. A control region (e.g., a control resource set (CORESET)) for physical control channels can be defined by multiple symbol periods and can extend over the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more UEs 115 can monitor or search for control regions for control information based on one or more SS sets, and each SS set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with encoded information in a control information format having a given payload size. The SS set may include a common SS set configured to send control information to multiple UEs 115 and a UE-specific SS set configured to send control information to a specific UE 115.

[0064] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used for (e.g., via a carrier) communication with base station 105, and may be associated with an identifier used to distinguish neighboring cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), etc.). In some examples, a cell may also refer to a portion of geographic coverage area 110 or a geographic coverage area 110 (e.g., a sector) over which a logical communication entity operates. Depending on various factors such as the capabilities of base station 105, the range of such cells can range from small areas (e.g., structures, subsets of structures) to large areas. For example, a cell may be or include buildings, subsets of buildings, or external space between or overlapping geographic coverage areas 110, and other examples.

[0065] Macro cells typically cover a relatively large geographical area (e.g., a radius of several kilometers) and allow unrestricted access by UE 115 with a service subscription from a network provider supporting the macro cell. In contrast, small cells can be associated with low-power base station 105 and can operate as macro cells in the same or different (e.g., licensed, unlicensed) frequency bands. Small cells can provide unrestricted access to UE 115 with a service subscription from a network provider, or restricted access to UE 115 associated with a small cell (e.g., UE 115 in a Closed Subscriber Group (CSG), UE 115 associated with a user in a residence or office). Base station 105 can support one or more cells and can also support communication on one or more cells using one or more component carriers.

[0066] In some examples, a carrier can support multiple cells, and different cells can be configured based on different protocol types that can provide access for different types of devices (e.g., MTC, Narrowband IoT (NB-IoT), Evolved Mobile Broadband (eMBB)).

[0067] In some examples, base station 105 may be mobile, and therefore provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. Wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 use the same or different radio access technologies to provide coverage for various geographic coverage areas 110.

[0068] The wireless communication system 100 can support synchronous or asynchronous operation. For synchronous operation, base stations can have similar frame timings, and transmissions from different base stations 105 can be approximately time-aligned. For asynchronous operation, base stations 105 can have different frame timings, and in some examples, transmissions from different base stations 105 can be time-unaligned. The techniques described herein can be used for both synchronous and asynchronous operation.

[0069] Some UEs 115 (such as MTC or IoT devices) can be low-cost or low-complexity devices, and can provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with each other or with base station 105 without human intervention. In some examples, M2M communication or MTC can include communication from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application that utilizes or presents the information to humans interacting with the application. Some UEs 115 can be designed to collect information or automate the behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, climate and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based service billing. In one aspect, the techniques disclosed herein may be applicable to MTC UEs or IoT UEs. MTC UE or IoT UE can include MTC / enhanced MTC (eMTC, also known as CAT-M, Cat M1) UE, NB-IoT (also known as CAT NB1) UE, and other types of UE. eMTC and NB-IoT can refer to technologies that can evolve from these technologies or can be future technologies based on these technologies. For example, eMTC can include FeMTC (further eMTC), eFeMTC (enhanced further eMTC), and mMTC (massive MTC), and NB-IoT can include eNB-IoT (enhanced NB-IoT) and FeNB-IoT (further enhanced NB-IoT).

[0070] Some UE 115s can be configured to operate in a power-saving mode, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication can be performed at a reduced peak rate. Other power-saving techniques for UE 115 include: entering a power-saving deep sleep mode when not engaged in active communication, operating on limited bandwidth (e.g., for narrowband communication), or a combination of these techniques. For example, some UE 115s can be configured to operate with narrowband protocol types associated with a defined portion or range (e.g., a set of subcarriers or a resource block (RB)) used within a carrier, within a carrier's guard band, or outside the carrier.

[0071] Wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private or group communication and can be supported by one or more mission-critical services (such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData)). Support for mission-critical functions can include service prioritization and the use of mission-critical services for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency are used interchangeably herein.

[0072] In some examples, UE 115 may also be able to communicate directly with other UE 115s on a device-to-device (D2D) communication link 135 (e.g., using peer-to-peer (P2P) or D2D protocols). One or more UE 115s utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UE 115s in such a group may be outside the geographic coverage area 110 of base station 105, or otherwise unable to receive transmissions from base station 105. In some examples, multiple groups of UE 115s communicating via D2D communication may utilize a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UE 115s without involving base station 105.

[0073] In some systems, the D2D communication link 135 may be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles may communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles may signal information related to traffic conditions, signal control, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure such as roadside units, or use vehicle-to-network (V2N) communication to communicate with the network via one or more network nodes (e.g., base station 105), or both.

[0074] Core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC), and can include at least one control plane entity (e.g., a mobility management entity (MME), access and mobility management function (AMF)) managing access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), packet data network (PDN) gateway (P-GW), or user plane function (UPF)) routing or interconnecting packets to external networks. The control plane entity can manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by base station 105 associated with core network 130. User IP packets can be transmitted through the user plane entity, which can provide IP address allocation and other functions. The user plane entity can connect to IP services 150 for one or more network operators. IP services 150 can include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0075] Some network devices (such as base station 105) may include sub-components of, for example, access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with UE 115 through one or more other access network transport entities 145 (which may be referred to as a radio headend, smart radio headend, or transmit / receive point (TRP)). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio headends and ANCs) or incorporated into a single network device (e.g., base station 105).

[0076] Wireless communication system 100 can operate using one or more frequency bands (typically in the range of 300 MHz to 300 GHz). The region from 300 MHz to 3 GHz is generally referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength range extends from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but the waves can be sufficiently permeable to penetrate structures for use in macrocells to provide service to UE 115 located indoors. Transmission of UHF waves can be associated with smaller antennas and shorter distances (e.g., less than 100 km) compared to transmission using smaller frequencies and longer waves in the lower high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0077] The wireless communication system 100 can also operate in the ultra-high frequency (SHF) region using a frequency band from 3 GHz to 30 GHz (also referred to as the centimeter band) or in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also referred to as the millimeter band). In some examples, the wireless communication system 100 can support millimeter-wave (mmW) communication between the UE 115 and the base station 105, and the EHF antennas of the corresponding device can be even smaller and more closely spaced compared to UHF antennas. In some examples, this can facilitate the use of antenna arrays within the device. However, propagation to EHF transmissions may suffer even greater atmospheric attenuation and shorter distances compared to SHF or UHF transmissions. The techniques disclosed herein can be employed across transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may vary depending on the country or regulatory authority.

[0078] Wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, wireless communication system 100 can employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed frequency band (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in an unlicensed radio frequency spectrum band, devices (such as base station 105 and UE 115) can employ carrier sensing for collision detection and avoidance. In some cases, operation in the unlicensed frequency band can be based on carrier aggregation configurations that cooperate with component carriers operating in a licensed frequency band (e.g., LAA). Operation in the unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0079] Base station 105 or UE 115 may be equipped with multiple antennas, which can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels (which may support MIMO operation or transmit or receive beamforming). For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have antenna arrays with multiple rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, antenna panels may support radio frequency beamforming for signals transmitted via antenna ports.

[0080] Base station 105 or UE 115 can use MIMO communication to employ multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such a technique can be called spatial multiplexing. For example, the transmitting device can transmit the multiple signals via different antennas or different combinations of antennas. Similarly, the receiving device can receive the multiple signals via different antennas or different combinations of antennas. Each of the multiple signals can be referred to as a separate spatial stream and can carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers can be associated with different antenna ports used for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO) and multi-user MIMO (MU-MIMO), where in SU-MIMO, multiple spatial layers are transmitted to the same receiving device, and in MU-MIMO, multiple spatial layers are transmitted to multiple devices.

[0081] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105, UE 115) to form or guide antenna beams (e.g., transmit beam, receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array such that some signals propagating in a specific orientation relative to the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements can include applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with the transmitting or receiving device. The adjustments associated with each antenna element can be defined by a beamforming weight set associated with a specific orientation (e.g., relative to the antenna array of the transmitting or receiving device, or relative to some other orientation).

[0082] Base station 105 or UE 115 may use beam scanning technology as part of beamforming operations. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Base station 105 may transmit several signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) multiple times in different directions. For example, base station 105 may transmit signals based on different beamforming weight sets associated with different transmission directions. The transmissions in different beam directions may be used (e.g., by a transmitting device such as base station 105 or a receiving device such as UE 115) to identify the beam direction that base station 105 will later transmit or receive.

[0083] Some signals (such as data signals associated with a specific receiving device) may be transmitted by base station 105 in a single beam direction (e.g., the direction associated with the receiving device, such as UE 115). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions, and UE 115 may report to base station 105 an indication of the signal it received with the highest signal quality, or also report an acceptable signal quality.

[0084] In some examples, multiple beam directions can be used to perform transmissions by a device (e.g., base station 105 or UE 115), and the device can use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from base station 105 to UE 115). UE 115 can report feedback indicating precoding weights for one or more beam directions, and this feedback can correspond to a configured number of beams across the system bandwidth or one or more subbands. Base station 105 can transmit reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)), which can be precoded or unprecoded. UE 115 can provide feedback for beam selection, which can be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may employ similar techniques to transmit signals multiple times in different directions (e.g., to identify beam directions for subsequent transmission or reception by UE 115) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0085] When receiving various signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105, a receiving device (e.g., directional listening) can attempt multiple receiving configurations. For example, the receiving device can attempt multiple receiving directions by: receiving via different antenna subarrays; processing the received signal according to different antenna subarrays; receiving according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets); or processing the received signal according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array. Any of these methods can be referred to as "listening" according to different receiving configurations or receiving directions. In some examples, the receiving device can use a single receiving configuration to receive along a single beam direction (e.g., when receiving data signals). A single receiver configuration may be aligned on a beam direction determined by listening according to different receiver configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening according to multiple beam directions).

[0086] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP-based. The Radio Link Control (RLC) layer can perform packet segmentation and reassembly for communication on logical channels. The Media Access Control (MAC) layer can perform priority processing and multiplexing of logical channels to transport channels. The MAC layer can also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide the establishment, configuration, and maintenance of RRC connections (which support radio bearers for user plane data) between the UE 115 and the base station 105 or core network 130. At the physical layer, transport channels can be mapped to physical channels.

[0087] UE 115 and base station 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique used to increase the likelihood of data being correctly received on communication link 125. HARQ can include a combination of error detection (e.g., using Cyclic Redundancy Check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Repeat Request (ARQ)). HARQ can improve throughput at the MAC layer under poor radio conditions (e.g., low signal and noise conditions). In some examples, the device can support same-slot HARQ feedback, where the device can provide HARQ feedback for data received in a previous symbol within a specific time slot. In other cases, the device can provide HARQ feedback in subsequent time slots or according to some other time interval.

[0088] Typically, UE 115 can receive a configuration message from the base station indicating that each PDCCH candidate in a first SS set in a first TTI (e.g., time slot or span) is linked to a corresponding PDCCH candidate in a second SS set in a second TTI. UE 115 may be limited (e.g., BD limit) relative to the total number of PDCCH candidates allowed to be monitored in a given TTI. UE 115 may count the PDCCH candidates in the first SS set against the BD limit of the first TTI, and may count the PDCCH candidates in the second SS against the BD limit of the second TTI. UE 115 may count the combination of PDCCH candidates in the first TTI and the PDCCH candidates in the second TTI against the BD limit of the second TTI only, or it may count the combination of PDCCH candidates in the first TTI and the second TTI against both the BD limit of the first TTI and the BD limit of the second TTI. Additionally, for oversubscription purposes, UE 115 may consider combining PDCCH candidates with other PDCCH candidates in the TTI or separating them from other PDCCH candidates.

[0089] In some examples, the techniques described herein can also describe how a UE can be configured with a first set of SS and a second set of SS within the same TTI. In such an example, UE 115 can consider a first set of PDCCH candidates from the first set of SS, a second set of PDCCH candidates from the second set of SS, and combinations of the first set of PDCCH candidates and the second set of PDCCH candidates in such a way that they are all together, all separate, or any combination thereof (e.g., in relation to an overbooking process, the combination of the first set of PDCCH candidates can be combined with only one of the first set of PDCCH candidates and the second set of PDCCH candidates).

[0090] Figure 2 An example of a wireless communication system 200 supporting BD limits and overbooking for PDCCH duplication is shown, according to various aspects of this disclosure. The wireless communication system 200 may include a base station 205 and a UE 215, which may be a reference... Figure 1 Examples of corresponding devices described. In some aspects, base station 205 may be the serving base station or cell of UE 215, and may support repeat-based PDCCH candidates configured for UE 215.

[0091] In some aspects, UE 215 may be configured with one or more cores in the BWP of the serving cell. For example, UE 215 may be configured with three, five, or some other number of cores in the BWP configured by base station 205. Typically, each core may be associated with an active Transport Configuration Indicator (TCI) state. For example, as part of the core configuration for UE 215 by base station 205, RRC configuration may be performed for UE 215: the number of resource blocks (RBs) in the frequency domain and the number of symbols in the time domain (e.g., one, two, or three OFDM symbols) for the core.

[0092] In some examples, the wireless communication system 200 can support PDCCH monitoring in one or more search space (SS) sets. In some aspects, each SS set can be associated with a CORESET. For example, up to ten SS sets can exist in a component carrier (CC) BWP. As part of the SS set configuration, RRC signaling can be used to configure the associated CORESET, the period and offset of the monitored time slot, and the symbols to be monitored in that time slot in the time domain, or the DCI format to be monitored, and the number of PDCCH candidates for a given aggregation level (AL). PDCCH candidates can be defined as part of the SS set configuration. For example, PDCCH candidates with a given AL in a given PDCCH candidate index can be defined in a given SS set. DCI can be transmitted in a PDCCH candidate. For example, base station 205 may be configured with a first SS set including multiple PDCCH monitoring opportunities 210 (e.g., monitoring opportunity 210-a, monitoring opportunity 210-b, and monitoring opportunity 210-c), and a second SS set including multiple PDCCH monitoring opportunities 220 (e.g., monitoring opportunity 220-a, monitoring opportunity 220-b, and monitoring opportunity 220-c). Each monitoring opportunity may be configured with one or more PDCCH candidates (e.g., PDCCH candidate 225 included in monitoring opportunity 210, PDCCH candidate 230 included in monitoring opportunity 220, etc.).

[0093] UE 215 can monitor PDCCH candidates in various SS sets to receive one or more DCI messages. UE 215 can determine that the PDCCH candidate has passed Cyclic Redundancy Check (CRC) verification (e.g., UE 215 can attempt blind decoding of each PDCCH candidate with BD, where the PDCCH candidate passes the CRC check corresponding to the successfully decoded DCI).

[0094] In some wireless communication systems, there may be limitations (e.g., a maximum number) on the monitored PDCCH candidates that the UE 215 can attempt to blindly decode (e.g., blind decoding limit, which may also be referred to as maximum blind decoding count, BD limit, monitored PDCCH candidate limit, etc.). The blind decoding limit (BD limit) can be based on a given TTI (e.g., a slot, span, or other duration in the time domain). For example, for four or fewer downlink serving cells configured, a separate BD limit per downlink serving cell can be supported based on the basic unit of the limit for one CC. The BD limit for four or fewer downlink serving cells can be fixed and can depend on the subcarrier spacing (SCS) of the slots per serving cell. For example, depending on the SCS configuration, the maximum number of monitored PDCCH candidates per slot or downlink BWP with different SCS configurations for a single serving cell can be in the range of 20-44. In some examples, depending on the SCS configuration and other factors, the maximum number of non-overlapping CCEs per TTI in a downlink BWP with different SCS configurations for a single serving cell can be in the range of 32-56. For more than four downlink serving cells, UE 215 can indicate its total capacity to base station 205 (e.g., via a PDCCH-BlindDetectionCA parameter value that is an integer greater than or equal to four). A total limit can be defined across downlink serving cells with the same SCS based on the indicated capacity, the number of downlink CCs with the same SCS, and the total number of CCs. This BD limit can be a per-scheduled cell limit and can be defined as a minimum of the total limit, along with a basic unit of the limit indicated by the SCS (e.g., 20-44 or 32-56, etc.).

[0095] Therefore, in any given TTI, a UE can be configured with one or more PDCCH candidates. PDCCH candidates can correspond to different SSSs. The UE can count some or all of the PDCCH candidates against the BD limit.

[0096] Some wireless communication systems can enable PDCCH transmission with two active TCI states. Variations of this approach may include a CORESET with two active TCI states, a set of SSs associated with two different CORESETs, or two sets of SSs associated with a corresponding CORESET. In the case where a CORESET is associated with two active TCI states, base station 205 may configure a PDCCH candidate (in a given set of SSs) to be associated with both TCI states of the CORESET. In another approach where a CORESET can be associated with two active TCI states, base station 205 may configure two sets of PDCCH candidates (in a given set of SSs) to be associated with each of the two active TCI states of the CORESET. In yet another approach where a CORESET can be associated with two active TCI states, base station 205 may configure two sets of PDCCH candidates to be associated with two corresponding sets of SSs, where both sets of SSs are associated with a CORESET, and each set of SSs is associated with only one TCI state of the CORESET. Typically, the set of PDCCH candidates may include one or more PDCCH candidates, and the PDCCH candidates in the set correspond to the repetition or opportunity of DCI that can be indicated to UE 215.

[0097] Various SS sets of PDCCH candidate sets can provide repeat-based PDCCH candidates, where each PDCCH candidate is linked to other PDCCH candidates. For example, PDCCH candidate 225 in the first SS set may be located in monitoring time slot 210-a and may be linked to PDCCH candidate 230 located in monitoring time slot 220-a in the second SS set. PDCCH candidate 225 and PDCCH candidate 230 may be located in the same time slot or in different time slots. In some examples, base station 205 may use PDCCH repeat on two linked PDCCH candidates to send DCI messages. For example, base station 205 may send a first repeat of the DCI message on PDCCH candidate 225 and a second repeat of the DCI message on PDCCH candidate 230. In some examples, UE 215 may perform a soft combination procedure on PDCCH candidate 225 and PDCCH candidate 230 to produce a soft-combined PDCCH candidate 235. The UE may treat the soft-combined PDCCH candidate 235 as another monitored PDCCH candidate.

[0098] In some examples, two or more PDCCH candidates may be explicitly linked together (e.g., base station 205 may configure a link to UE 215 before UE 215 attempts to perform BD on the PDCCH candidates). In some examples, two or more PDCCH candidates may not be explicitly linked together, and UE 215 may identify or otherwise determine the link after or before decoding. However, some wireless communication systems do not provide a mechanism or other indication of how to count one or more PDCCH candidates when monitoring BD limits configured for UE 215. For example, UE 215 may count the number of PDCCH candidates 225 against the BD limit of the time slot in which PDCCH candidate 225 resides, and may count the number of PDCCH candidates 230 against the BD limit of the time slot in which PDCCH candidate 230 resides. However, UE 215 may also need to determine whether and how to count the set of soft-combined PDCCH candidates 235 against the BD limit. For example, if UE 215 monitors PDCCH candidate 225 and PDCCH candidate 230 during different TTIs, UE 215 can determine whether to count soft-combined PDCCH candidate 235 for the BD limit of the first time slot or the second time slot or both.

[0099] Therefore, the wireless communication system 200 can support PDCCH repetition, where each PDCCH repetition corresponds to a PDCCH candidate, and two or more PDCCH candidates can be linked together (as possible repetitions of the same DCI). The aspects of the described techniques provide different methods for calculating the number of PDCCH candidates "for monitoring" to be applied to BD constraints for the UE.

[0100] In some examples, the wireless communication system 200 may support an oversubscription process. When oversubscription is supported, base station 205 may be allowed to configure PDCCH candidates for UE 215 that exceed the BD limit for the primary scheduling cell (e.g., for BD and CCE). However, UE 215 may not be able to detect additional PDCCH candidates exceeding the BD limit. In such an example, UE 215 may determine whether to monitor or discard (e.g., ignore or avoid monitoring) one or more configured PDCCH candidates. For example, in the first step of the oversubscription process, UE 215 may exclude blind decoding or CCE corresponding to a common SS from the limit (e.g., PDCCH candidates from a common SS may have a higher priority than those from other SSs and may not be excluded or discarded). Alternatively or additionally, UE 215 may monitor (e.g., perform blind decoding on them) the remaining SSs (e.g., UE-specific SSs (USS)), starting with the lowest index value and continuing to monitor USSs with increasing index values. After monitoring (e.g., performing a BD procedure) on the PDCCH candidates of the USS, UE 215 can determine whether the number of remaining BD procedures within the BD limit exceeds the number of PDCCH candidates configured for the next USS. If so, UE 215 can perform blind decoding on the PDCCH candidates of that USS. UE 215 can continue this process until the remaining number of allowed blind decodings is less than the number of PDCCH candidates in the next USS. At this point, UE 215 can stop monitoring (e.g., it can discard all remaining configured PDCCH candidates). This process can be called an oversubscription process, or determining oversubscription conditions. In some examples, oversubscription is supported or allowed only in the primary cell (Pcell) and not in the secondary cell (Scell). Oversubscription can be considered and performed with reference to the per-scheduled cell limit of the primary cell.

[0101] In some examples, the wireless communication system 200 may support span-based PDCCH monitoring. A span may refer to a Time Interval (TTI) defined according to (X,Y) symbols, where X may refer to the minimum time interval between the first symbols of two consecutive spans (e.g., in terms of the number of symbols), and where Y may refer to the number of symbols in each span. Each PDCCH monitoring event may reside within a single span. In some examples, a BD limit may be defined for each span. In some examples, if the primary cell is configured with span-based PDCH monitoring, the oversubscription process described herein may be supported on the first span of each time slot (e.g., but not on subsequent spans). In other spans, the UE 215 may not expect to monitor more PDCCH candidates than the BD limit (e.g., the UE 215 may not expect the number of PDCCH candidates and the corresponding number of non-overlapping CCEs per span on the primary cell to be greater than the corresponding number the UE can monitor on each span of the primary cell). The TTI described herein may refer to a time slot (e.g., for time slot-based PDCCH monitoring) or a span (e.g., for span-based PDCCH monitoring).

[0102] As described above, UE 215 can support PDCCH repetition, where two PDCCH candidates can be linked together for possible repetition of the same DCI. These two PDCCH candidates (e.g., PDCCH candidate 225 and PDCCH candidate 235) can reside in different SS sets (e.g., associated with corresponding CORESET) and can be linked together for PDCCH repetition. In some examples, to count PDCCH candidates against BD limits, UE 215 can treat soft-combined PDCCH candidate 235 as a third set of PDCCH candidates (e.g., when UE 215 decodes each PDCCH candidate 225, each PDCCH candidate 230, and each soft-combined PDCCH candidate 235 separately). Because BD limits can be defined for each TTI, if PDCCH candidate 225 is in the first TTI while PDCCH candidate 230 is in a different time slot, UE 215 may need to determine whether to count the soft-combined PDCCH candidate 235 against the BD limit of one of these two TTIs. Because the overbooking process can be based on the SS set index (e.g., starting from the lowest index), UE 215 can determine how to apply the overbooking process to the soft-combined PDCCH candidate 235 (e.g., whether to consider the soft-combined PDCCH candidate 235 together with other PDCCH candidates, consider it separately, etc.).

[0103] As described above, UE 215 can count the soft-combined PDCCH candidate 235 for the BD limits of one or more time slots. Additionally, if an overbooking procedure is supported for a time slot, UE 215 can determine whether and how to apply the soft-combined PDCCH candidate 235 to the overbooking procedure for that time slot. When the monitoring time is in different TTIs, the technique for counting the soft-combined PDCCH candidate 235 for the BD limits of one or more TTIs and performing the overbooking procedure based on this count is referenced. Figure 3 Described. Reference Figure 4 A technique is described for performing an overbooking process when PDCCH candidates from different SS sets are in the same TTI.

[0104] Figure 3 Examples of a monitoring scheme 300 supporting BD limits and overbooking for PDCCH duplication are shown, according to various aspects of this disclosure. In some examples, the monitoring scheme 300 may be implemented by, or may include, various aspects of, wireless communication system 100 or wireless communication system 200. For example, the UE and the base station may communicate using the monitoring scheme 300, and the UE and the base station may be references. Figure 1 and Figure 2 Examples of the corresponding devices described.

[0105] In some examples, such as reference Figure 2 As described, a UE can be configured with multiple SS sets. Each SS set may include one or more monitoring times 310, and each monitoring time may include one or more PDCCH candidates. In some examples, SS sets can be linked for PDCCH repetition. In such examples, PDCCH candidates in different monitoring times 310 can be linked to each other. For example, monitoring time 310-a may be located in a first TTI 305-a (e.g., a time slot or span, etc.). Monitoring time 310-a may be associated with a first SS set. Monitoring time 310-b may be located in a second TTI 305-b (e.g., a second time slot, a second span, etc.). Monitoring time 310-b may be associated with a second SS set. PDCCH candidates 320 in monitoring time 310-a may be linked to individual PDCCH candidates 325 in monitoring time 310-b.

[0106] The UE can be configured to count the PDCCH candidates for links used for PDCCH duplication as a set of three separately monitored PDCCH candidates against BD restrictions, as referenced. Figure 2In a more detailed description, for example, the base station may send a configuration message to the UE instructing each PDDCH candidate 320 in the first SS set of TTI 305-a to be associated with, or linked to, the corresponding PDDCH candidate 325 in the second SS set of the second TTI 305-b. The UE may be configured to count PDDCH candidate 320-a against the BD limit of TTI 305-a, and to count PDDCH candidate 325-a (e.g., which may be linked to PDDCH candidate 320-a) against the BD limit of TTI 305-b. However, the UE may also be configured to count third-monitored PDDCH candidates (e.g., soft-combined PDDCH candidates) against the BD limit. In other words, the UE can soft-combine PDCCH candidate 320-a and PDCCH candidate 325-a, and can count the soft-combine PDCCH candidates against BD restrictions (e.g., any one or both of TTI 305-a and TTI 305-b). In some examples, the base station can send instructions to count the combination of PDCCH candidates as a third set of PDCCH candidates against one or more BD restrictions. Therefore, in some examples, the UE can count the first set 320 of PDCCH candidates (e.g., PDCCH candidate 320-a, PDCCH candidate 320-b, or PDCCH candidate 320-c) against the BD limit of TTI 305-a, count the second set 325 of PDCCH candidates (e.g., PDCCH candidate 325-a, PDCCH candidate 325-b, or PDCCH candidate 325-c) against the BD limit of TTI 305-b, and count the third set of PDDCH candidates (e.g., a combination of PDCCH candidate 320 and PDCCH candidate 325) against the BD limit of TTI 305-a, TTI 305-b, or both. (For example, the UE can count the first set 325 of PDCCH candidates against the BD limit of TTI 305-a, or against the BD limit of TTI 305-b, or both twice, or count the second set 325 of PDCCH candidates against the BD limit of TTI 305-b.) The BD limit of 305-b, or the BD limit of TTI 305-a, or both, or any combination thereof.

[0107] In some examples, the UE can count the third set of PDCCH candidates against the BD limits of both TTI 305-a and TTI 305-b. In such an example, the UE can count the total number of PDCCH candidates 320 against the BD limit of TTI 305-a, and can further count the total number of the third set of PDCCH candidates (e.g., a combination of PDCCH candidates 320 and linked PDCCH candidates 325) against the BD limit of TTI 305-a. Similarly, the UE can count the total number of PDCCH candidates 325 against the BD limit of TTI 305-b, and can further count the total number of the third set of PDCCH candidates (e.g., a combination of PDCCH candidates 320 and linked PDCCH candidates 325) against the BD limit of TTI 305-b. For example, if monitoring timing 310-a of the first SS set includes 10 PDCCH candidates 320, the UE can count the 20 PDCCH candidates against the BD limit of TTI 305-a (e.g., per slot or per span BD limit for TTI 305-a), and similarly, it can count the 20 PDDCH candidates against the BD limit of TTI 305-b (e.g., per slot or per span BD limit for TTI 305-b). For example, if we assume the SCS is 30kHz and the BD limit for each TTI is 36, then neither monitoring timing 310-a nor monitoring timing 310-b will exceed their respective BD limits.

[0108] In some examples, the UE may count the third set of PDDCH candidates against the BD limit of only one TTI 305 (e.g., based on the timing of the two TTIs, the index values ​​of each SS set, etc.). For example, the UE may count only the third set of PDDCH candidates against the BD limit of a later TTI 305 (e.g., TTI 305-b). In such an example, the UE may count the total number of PDCCH candidates 320 against the BD limit of TTI 305-a. The UE may count the total number of PDCCH candidates 325 against the BD limit of TTI 305-b, and may further count the total number of the third set of PDCCH candidates (e.g., a combination of PDDCH candidates 320 and linked PDDCH candidates 325) against the BD limit of TTI 305-b. For example, if monitoring timing 310-a of the first SS set includes 10 PDDCH candidates 320, the UE can count the 10 PDDCH candidates 320 against the BD limit of TTI 305-a (e.g., per slot or per span BD limit for TTI 305-a), and can count the 20 PDDCH candidates against the BD limit of TTI 305-b (e.g., per slot or per span BD limit for TTI 305-b). For example, if we assume the SCS is 30kHz and the BD limit for each TTI is 36, then neither monitoring timing 310-a nor monitoring timing 310-b will exceed their respective BD limits.

[0109] In the two examples above, the UE may count or otherwise determine the total number of PDDCH candidates associated with the second SS set (e.g., in TTI 305-b) to count against the BD limit of TTI 305-b by counting each PDDCH candidate 325 of the second TTI 305-b and counting each combination of each PDDCH candidate 320 with its corresponding PDDCH candidate 325. The UE may compare the total number of PDDCH candidates (e.g., combinations of PDDCH candidates 325 and PDDCH candidates) with the BD limit, and may also compare any number of other PDDCH candidates associated with the second TTI 305-b (e.g., other PDDCH candidates in the USS, CSS, other SS sets, etc., located in TTI 305-b) with the BD limit. In some examples (e.g., where the UE counts a third set of PDDCH candidates against the corresponding BD limits of two TTIs 305), the UE may additionally determine the total number of PDDCH candidates associated with the first SS set to be counted against the BD limit of the first TTI 305-a by counting each PDDCH candidate 320 and each combination of PDDCH candidate 320 with its associated PDDCH candidate 325. The UE may then compare the counted PDDCH candidates, and the total number of any other PDDCH candidates associated with the first TTI 305-a, with the BD limit for TTI 305-a.

[0110] In some examples, the UE can also determine that there is an overbooking condition for TTI 305. For example, see reference... Figure 2 In more detail, for a given TTI 305, the base station can configure the UE with more PDDCH candidates than it is allowed to monitor under the BD limit. In such an example, the UE can assess the overbooking condition of a given TTI 305 based on the number of PDDCH candidates in that TTI 305, and can also consider the number of PDDCH candidate combinations counted against the BD limit of that TTI 305.

[0111] In the scenario described herein, where the UE counts the combination of PDCCH candidate 320 and linked PDDCH candidate 325 against the BD limit of TTI305-b, the UE can determine whether the oversubscription condition is met by evaluating the total number of PDDCH candidates counted against the BD limit. In such an example, for reference... Figure 2As part of the described oversubscription process, the UE can determine whether the number of remaining available PDCCH candidates counted against the BD limit exceeds the total number of PDDCH candidates (which includes a combination of PDDCH candidate 325 and PDDCH candidates). If so, the UE can count the total number of PDDCH candidates against the BD limit and can monitor the total number of all PDDCH candidates. Otherwise, the UE can discard the total number of all PDDCH candidates (e.g., it can disregard the control signaling of the PDDCH candidates) and terminate the oversubscription process.

[0112] In some examples, the UE can determine whether the oversubscription condition is met by evaluating PDCCH candidate 325 separately from evaluating combinations of PDDCH candidate 320 and PDDCH candidate 325. For example, as part of the oversubscription process, the UE can determine whether the number of remaining available PDDCH candidates for the BD limit count for TTI 305-b exceeds the number of PDDCH candidates 325. If not, the UE can discard PDDCH candidates 325 and terminate the oversubscription process (e.g., it can avoid counting any more PDCCH candidates for the BD limit of TTI 305-b). Otherwise, the UE can count the number of PDDCH candidates 325 against the BD limit and then re-evaluate whether the remaining number of updated PDDCH candidates for the BD limit count for TTI 305-b exceeds the number of combinations of PDDCH candidates 320 and PDDCH candidate 325. If so, the UE can count these combinations against the BD limit. If not, the UE can discard combinations of PDDCH candidates and terminate the oversubscription process. In some examples, the UE may consider the combination (e.g., based on index value, etc.) before considering PDDCH candidate 325.

[0113] As described herein, if the UE counts the PDDCH candidate combinations only for the BD limit of the subsequent TTI 305-b, the UE can consider the combinations of PDDCH candidates (e.g., together with or separately from the individual PDDCH candidates 325 of TTI 305-b) with respect to the overbooking conditions of TTI 305-b. If the UE counts the combinations of PDDCH candidates for both TTI 305-a and 305-b's BD limit, the UE can consider the combinations of PDDCH candidates (e.g., together with or separately from the individual PDDCH candidates 320 of TTI 305-a and the individual PDDCH candidates 325 of TTI 305-b) with respect to the overbooking conditions of TTI 305-a and TTI 305-b, respectively.

[0114] The techniques described herein can be applied to slot-based PDDCH repeat and overbooking processes, or span-based PDCCH repeat and overbooking processes, and TTI 305 can be an example of a slot, span, or other duration.

[0115] In some examples, the monitoring timing can be within the same TTI, as in the reference. Figure 4 A more detailed description.

[0116] Figure 4 Examples of a monitoring scheme 400 supporting BD limits and overbooking for PDCCH duplication according to various aspects of this disclosure are shown. In some examples, the monitoring scheme 400 may be implemented by, or may be derived from, various aspects of wireless communication system 100 or wireless communication system 200. For example, the UE and the base station may communicate using the monitoring scheme 400, and the UE and the base station may be references Figure 1 and Figure 2 Examples of the corresponding devices described.

[0117] In some examples, the base station can configure the UE with one or more SS sets. For example, the base station can send a configuration message indicating that each PDDCH candidate 420 in monitoring time 410-a of the first SS set is linked to a corresponding PDDCH candidate 425 in a second monitoring time 410-b of the second SS set, all of which are within the same TTI 405 (e.g., time slot or span). In such an example, the UE can determine that an oversubscription condition exists (e.g., associated with an oversubscription of PDDCH candidates within TTI 405). For example, the base station can configure the UE with more PDDCH candidates than is allowed to be monitored under the BD limit of TTI 405. The total number of PDDCH candidates in the TTI may include PDDCH candidate 420 in monitoring time 410-a of the first SS set, PDDCH candidate 425 in monitoring time 410-b of the second SS set, one or more PDDCH candidates of the CSS in monitoring time 410-c of the CSS, one or more PDDCH candidates of the USS in monitoring time 410-d of the USS, and so on.

[0118] In some examples, the UE can be configured to repeat PDCCH across multiple SS sets. For example, the first and second SS sets in TTI 405 can be linked such that each PDDCH candidate 420 (e.g., 10 PDCCH candidates 420 including PDCCH candidate 420-a, PDCCH candidate 420-b, or PDCCH candidate 420-c) can be linked with PDCCH candidates 425 (e.g., 10 PDCCH candidates 425-a, PDCCH candidate 425-b, and PDCCH candidate 425-c) that have the same index across SS sets. The base station can configure the UE to count two PDCCH candidates linked for repetition as three monitored PDDCH candidates against the BD limit per TTI for oversubscription purposes (e.g., on a Pcell).

[0119] In some examples, the UE can determine whether the oversubscription condition is met by considering the individual candidates from the two SSS sets together with the combined PDCCH candidates (e.g., counting the next set of PDCCH candidates against the BD limit if it does not exceed the BD limit, or discarding PDCCH candidates and terminating the oversubscription process). In such examples, the total number of PDCCH candidates monitored or discarded is based on the oversubscription process (e.g., including PDCCH candidate 420, PDCCH candidate 425, and combinations of PDCCH candidate 420 and PDCCH candidate 425).

[0120] In some examples, the UE can determine whether the oversubscription condition is met by considering the combination of PDCCH candidate 420 and PDCCH candidate 425 together with PDCCH candidates from one of the two SS sets (e.g., counting the next set of PDCCH candidates against the BD limit if it does not exceed the BD limit, or discarding PDCCH candidates and terminating the oversubscription process). For example, the UE can evaluate PDCCH candidate 420 together with the combination of PDCCH candidate 420 and PDCCH candidate 425, or evaluate PDCCH candidate 425 separately. In such examples, PDCCH candidate 420 can be discarded along with the combination of PDCCH candidate 420 and PDCCH candidate 425 based on the oversubscription process, or the combination of PDCCH candidate 420 and PDCCH candidate 425 can be monitored. Then, the UE can consider PDCCH candidate 425 separately.

[0121] In some examples, the UE can determine which of the two SS sets to group the combination of PDCCH candidates with. For example, the UE can group the combination of PDCCH candidates with PDCCH candidates 420-a of the first SS set based on the timing of monitoring time 410-a. Alternatively, the UE can choose an earlier monitoring time (e.g., monitoring time 410-a) and group the combination of PDCCH candidates with PDCCH candidates 420 of the first SS set. Or, the UE can choose a later monitoring time (e.g., monitoring time 410-b) and group the combination of PDCCH candidates with PDCCH candidates 425 of the second SS set. In some examples, the UE can group the combination of PDCCH candidates based on the index value of the SS set. For example, the UE can group the combination of PDCCH candidates with PDCCH candidates 420 of the first SS set based on a first SS set with an index value higher (or lower) than the second SS set. In some examples, the UE can group the combination of PDCCH candidates based on the index value of the CORESET associated with each SS set. For example, the UE can group the combination of PDCCH candidates with the PDDCH candidates 420 of the first SS set based on the first SS set associated with the CORESET having a higher (or lower) index value than the CORESET associated with the second SS set.

[0122] In some examples, the UE can determine whether the oversubscription condition is met by considering the combination of PDCCH candidate 420 and PDCCH candidate 425, and PDCCH candidate 420 and PDCCH candidate 425 separately (e.g., it can count the next set of PDCCH candidates against the BD limit if it does not exceed the BD limit, or it can discard PDCCH candidates and terminate the oversubscription process). For example, the UE can evaluate PDCCH candidate 420, PDCCH candidate 425, and the combination of PDCCH candidate 420 and PDCCH candidate 425 separately relative to the oversubscription condition. In such examples, based on the oversubscription process, PDCCH candidate 420 can be completely discarded or completely monitored, PDCCH candidate 425 can be completely discarded or completely monitored, and the combination of PDCCH candidate 420 and PDCCH candidate 425 can be completely discarded or completely monitored, with the above processes being independent of each other.

[0123] In some examples, the first SS set and the second SS set can be used for PDCCH repetition in the same TTI 405. Each of the first monitoring timing 410-a and the second monitoring timing 410-b can each include 10 PDCCH candidates, and each PDDCH candidate 420 can be linked to a PDCCH candidate 425 with the same index value. The CSS monitoring timing 410-c can include 6 PDCCH candidates. The USS monitoring timing 410-d (e.g., part of the regular S set and not used for PDCCH repetition) can include 8 PDCCH candidates. In some examples, assuming the SCS is 39kHz, the BD limit for TTI 405 can be 36 PDCCH candidates. Therefore, to perform the oversubscription process, the UE can first exclude the 6 PDCCH candidates of the CSS, resulting in a remaining number of available PDCCH candidates of 30 (e.g., 36-6). If the SS set of monitoring time 410-d has a lower index than the first SS set and the second SS set, the UE can first monitor the 8 individual PDCCH candidates in monitoring time 410-d, thereby generating a remaining BD-limited budget of 22 PDCCH candidates (e.g., 30-8).

[0124] In such an example, the UE can then evaluate the oversubscription conditions for the first SS set and the second SS set (which includes combinations of PDCCH candidates), as described above. That is, the UE can compare the number of PDCCH candidates 420 with the BD limit, the number of PDCCH candidates 425 with the BD limit, the number of combinations of PDCCH candidates with the BD limit, or within subgroups. For example, as described herein, the UE can consider PDCCH candidates 420, PDCCH candidates 425, and combined PDCCH candidates together (e.g., a total of 30 PDCCH candidates). In such an example, because the total number of PDCCH candidates exceeds the remaining BD limit budget (e.g., 22 PDCCH candidates), the UE can discard (e.g., ignore or avoid monitoring) all items in PDCCH candidates 420, PDCCH candidates 425, and combined PDCCH candidates.

[0125] In some examples, as described herein, the UE may consider PDCCH candidate 420 individually and may consider PDCCH candidate 425 together with a combination of PDCCH candidates. In such an example, if the first SS set used for monitoring timing 410-a has a lower index number than the second SS set, the UE may consider PDCCH candidate 420 first. Because the number of PDCCH candidates 420 does not exceed the remaining BD limit budget (e.g., 22 PDCCH candidates), the UE may monitor PDCCH candidates 420 and count them against the BD limit for TTI 405, resulting in a remaining BD limit budget of 12 PDCCH candidates. In such an example, the UE may then consider PDCCH candidate 425 and a combination of PDCCH candidates (e.g., 20 PDCCH candidates), which may exceed the remaining BD limit budget of 12 PDCCH candidates. This may cause the UE to discard the combination of PDCCH candidate 425 and PDCCH candidates. Therefore, in an example as described herein, the UE compares the first index value associated with the first SS set and the second index value associated with the second SS set (e.g., if the second index value associated with the second SS set is greater than the first index value associated with the first SS set), and the UE can determine whether the overbooking condition is met by counting each PDCCH candidate 425 twice.

[0126] In some examples, as described herein, for the purpose of the oversubscription process, the UE may consider each item in the PDDCH candidate 420, PDCCH candidate 425, and combined PDCCH candidates individually. For example, the UE may determine that the number of PDCCH candidates 420 (e.g., 10) is less than the available remaining BD limit budget (e.g., 22 PDCCH candidates), and that PDCCH candidate 420 can be monitored. Subsequently, the UE may determine that the number of PDCCH candidates 425 (e.g., 10) is less than the updated remaining BD limit budget (e.g., 12 PDCCH candidates), and that PDCCH candidate 425 can be monitored. The UE may also determine that the number of combinations of PDCCH candidates 420 and PDCCH candidates 425 (e.g., 10) is greater than the updated remaining BD limit budget (e.g., 2 PDCCH candidates), and that monitoring of such combinations of PDCCH candidates can be avoided.

[0127] Figure 5A block diagram 500 illustrates a device 505 supporting BD limits and overbooking for PDCCH duplication according to various aspects of this disclosure. Device 505 may be an example of various aspects of UE 115 as described herein. Device 505 may include a receiver 510, a transmitter 515, and a communications manager 520. Device 505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0128] Receiver 510 may provide a unit for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to BD restrictions and overbooking for PDCCH repetition). Information may be transmitted to other components of the device 505. Receiver 510 may utilize a single antenna or a set of antennas.

[0129] Transmitter 515 may provide a unit for transmitting signals generated by other components of the device 505. For example, transmitter 515 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to BD restrictions and oversubscription for PDCCH repetition). In some examples, transmitter 515 may be co-located with receiver 510 in a transceiver module. Transmitter 515 may utilize a single antenna or a set of antennas.

[0130] The communication manager 520, receiver 510, transmitter 515, or various combinations thereof may be examples of units for performing various aspects of BD limiting and oversubscription for PDCCH repetition as described herein. For example, the communication manager 520, receiver 510, transmitter 515, or various combinations or components thereof may support methods for performing one or more of the functions described herein.

[0131] In some examples, the communication manager 520, receiver 510, transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured or otherwise supporting units for performing the functions described herein. In some examples, the processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in memory by the processor).

[0132] Additionally or alternatively, in some examples, the communication manager 520, receiver 510, transmitter 515, or various combinations or components thereof may be implemented in hardware, software (e.g., software executed by a processor), or any combination thereof. If implemented in software executed by a processor, the functionality of the communication manager 520, receiver 510, transmitter 515, or various combinations or components thereof may be performed by a general-purpose processor, DSP, central processing unit (CPU), graphics processing unit (GPU), ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., units configured or otherwise supported for performing the functions described in this disclosure).

[0133] In some examples, the communication manager 520 may be configured to use or otherwise cooperate with the receiver 510, transmitter 515, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 520 may receive information from the receiver 510, send information to the transmitter 515, or integrate with or combine with the receiver 510, transmitter 515, or both to receive information, send information, or perform various other operations as described herein.

[0134] Communication manager 520 may support wireless communication at the UE according to the examples disclosed herein. For example, communication manager 520 may be configured or otherwise support: a unit for receiving a configuration message from a base station indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI. Communication manager 520 may be configured or otherwise support: a unit for determining the total number of downlink control channel candidates associated with the second SS set to be counted for the BD limit of the second TTI by counting each downlink control channel candidate in the second group of downlink control channel candidates twice. Communication manager 520 may be configured or otherwise support: a unit for monitoring downlink control channel transmissions during a second TTI based on the count of the BD limit for the second TTI.

[0135] Alternatively or concurrently, the communication manager 520 may support wireless communication at the UE according to the examples disclosed herein. For example, the communication manager 520 may be configured or otherwise support: a unit for receiving a configuration message from a base station indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second SS set of the TTI. The communication manager 520 may be configured or otherwise support: a unit for determining the existence of overbooking conditions associated with overbooking of downlink control channel candidates within the TTI. The communication manager 520 may be configured or otherwise support: a unit for evaluating overbooking conditions based on the corresponding numbers of the first set of downlink control channel candidates and the second set of downlink control channel candidates. The communication manager 520 may be configured or otherwise support: a unit for monitoring downlink control channel transmissions during the TTI based on the evaluation of the overbooking conditions.

[0136] By including or configuring the communication manager 520 according to the examples described herein, the device 505 (e.g., a processor that controls or otherwise couples to the receiver 510, transmitter 515, communication manager 520, or a combination thereof) can support techniques for PDCCH monitoring, resulting in improved system efficiency, more efficient use of available resources, more efficient use of UE computing resources, and so on.

[0137] Figure 6 A block diagram 600 illustrates device 605 supporting BD limits and overbooking for PDCCH duplication according to various aspects of this disclosure. Device 605 may be an example of some aspects of device 505 or UE 115 as described herein. Device 605 may include receiver 610, transmitter 615, and communication manager 620. Device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0138] Receiver 610 may provide a unit for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to BD restrictions and overbooking for PDCCH repetition). Information may be transmitted to other components of the device 605. Receiver 610 may utilize a single antenna or a set of antennas.

[0139] Transmitter 615 may provide a unit for transmitting signals generated by other components of the device 605. For example, transmitter 615 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to BD restrictions and oversubscription for PDCCH repetition). In some examples, transmitter 615 may be co-located with receiver 610 in a transceiver module. Transmitter 615 may utilize a single antenna or a set of antennas.

[0140] Device 605 or its various components may be examples of units for performing various aspects of BD limiting and overbooking for PDCCH repetition as described herein. For example, communication manager 620 may include configuration message manager 625, control channel candidate manager 630, monitoring manager 635, overbooking condition manager 640, or any combination thereof. Communication manager 620 may be examples of various aspects of communication manager 520 as described herein. In some examples, communication manager 620 or its various components may be configured to use receiver 610, transmitter 615, or both, or otherwise cooperate with receiver 610, transmitter 615, or both, to perform various operations (e.g., receiving, monitoring, transmitting). For example, communication manager 620 may receive information from receiver 610, send information to transmitter 615, or integrate with receiver 610, transmitter 615, or a combination thereof to receive information, send information, or perform various other operations as described herein.

[0141] Communication manager 620 may support wireless communication at the UE according to the examples disclosed herein. Configuration message manager 625 may be configured or otherwise supported as a unit for receiving configuration messages from a base station indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI. Control channel candidate manager 630 may be configured or otherwise supported as a unit for determining the total number of downlink control channel candidates associated with the second SS set to be counted for the BD limit of the second TTI by counting each downlink control channel candidate in the second group of downlink control channel candidates twice. Monitoring manager 635 may be configured or otherwise supported as a unit for monitoring downlink control channel transmissions during the second TTI based on the count of the BD limit for the second TTI.

[0142] Alternatively or concurrently, the communication manager 620 may support wireless communication at the UE according to the examples disclosed herein. The configuration message manager 625 may be configured or otherwise supported as a unit for receiving configuration messages from a base station indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second SS set of the TTI. The overbooking condition manager 640 may be configured or otherwise supported as a unit for determining the existence of overbooking conditions associated with overbooking of downlink control channel candidates within the TTI. The overbooking condition manager 640 may be configured or otherwise supported as a unit for evaluating overbooking conditions based on the corresponding numbers of the first and second sets of downlink control channel candidates. The monitoring manager 635 may be configured or otherwise supported as a unit for monitoring downlink control channel transmissions during the TTI based on the evaluation of the overbooking conditions.

[0143] Figure 7 A block diagram 700 illustrates a communication manager 720 supporting BD limiting and overbooking for PDCCH repetition according to various aspects of this disclosure. The communication manager 720 may be an example of aspects of the communication manager 520, communication manager 620, or both described herein. The communication manager 720, or its various components, may be examples of units for performing the various aspects of BD limiting and overbooking for PDCCH repetition as described herein. For example, the communication manager 720 may include a configuration message manager 725, a control channel candidate manager 730, a monitoring manager 735, an overbooking condition manager 740, a candidate count manager 745, a monitoring timing manager 750, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0144] Communication Manager 720 may support wireless communication at the UE according to the examples disclosed herein. Configuration Message Manager 725 may be configured or otherwise supported as a unit for receiving configuration messages from a base station indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI. Control Channel Candidate Manager 730 may be configured or otherwise supported as a unit for determining the total number of downlink control channel candidates associated with the second SS set to be counted for the BD limit of the second TTI by counting each downlink control channel candidate in the second group of downlink control channel candidates twice. Monitoring Manager 735 may be configured or otherwise supported as a unit for monitoring downlink control channel transmissions during the second TTI based on the count of the BD limit for the second TTI.

[0145] In some examples, the overbooking condition manager 740 may be configured or otherwise supported as a unit for determining the existence of overbooking conditions associated with overbooking of downlink control channel candidates within a second TTI. In some examples, the overbooking condition manager 740 may be configured or otherwise supported as a unit for evaluating overbooking conditions based on a corresponding number of downlink control channel candidates in the second set and each combination of each downlink control channel candidate in the first set and its corresponding downlink control channel candidate in the second set, wherein monitoring of downlink control channel transmission is further based on the evaluation of the overbooking conditions.

[0146] In some examples, to support the evaluation of overbooking conditions, the overbooking condition manager 740 may be configured or otherwise supported as a unit for determining whether overbooking conditions are met by evaluating together the total number of downlink control channel candidates associated with the second SS set.

[0147] In some examples, to support the evaluation of overbooking conditions, the overbooking condition manager 740 may be configured or otherwise support a unit for determining whether overbooking conditions are met by separately evaluating combinations of each downlink control channel candidate in the second set of downlink control channel candidates and the corresponding downlink control channel candidates in the second set of downlink control channel candidates.

[0148] In some examples, the candidate count manager 745 may be configured or otherwise supported to: determine, at least in part, the counting of a first set of downlink control channel candidates, a second set of downlink control channel candidates, and a third set of downlink control channel candidates for a BD limit per TTI based on configuration messages, wherein the third set of downlink control channel candidates includes combinations of each downlink control channel candidate in the first set of downlink control channel candidates and corresponding downlink control channel candidates in the second set of downlink control channel candidates; and to monitor downlink control channel transmission during a second TTI based on the count of the BD limit for the second TTI. In some examples, the candidate count manager 745 may be configured or otherwise supported to: count the second set of downlink control channel candidates and the third set of downlink control channel candidates for a BD limit for the second TTI. In some examples, the monitoring manager 735 may be configured or otherwise supported to: monitor downlink control channel transmission during a second TTI based at least in part on the count of the BD limit for the second TTI.

[0149] In some examples, the overbooking condition manager 740 may be configured or otherwise supported as a unit for determining the existence of overbooking conditions associated with overbooking of downlink control channel candidates within a first TTI. In some examples, the overbooking condition manager 740 may be configured or otherwise supported as a unit for evaluating overbooking conditions based on a corresponding number of downlink control channel candidates in a first set and each combination of each downlink control channel candidate in the first set with a corresponding downlink control channel candidate in a second set, wherein monitoring of downlink control channel transmission is further based on the evaluation of the overbooking conditions.

[0150] In some examples, to support the evaluation of overbooking conditions, the overbooking condition manager 740 may be configured or otherwise supported as a unit for determining whether overbooking conditions are met by evaluating together the total number of downlink control channel candidates associated with the first SS set.

[0151] In some examples, to support the evaluation of overbooking conditions, the overbooking condition manager 740 may be configured or otherwise support a unit for determining whether overbooking conditions are met by separately evaluating the combination of a first set of downlink control channel candidates and each downlink control channel candidate in the first set of downlink control channel candidates with the corresponding downlink control channel candidate in the second set of downlink control channel candidates.

[0152] In some examples, the second TTI includes either a time slot or a time span. In some examples, the first TTI includes either a time slot or a time span.

[0153] In some examples, the candidate count manager 745 may be configured or otherwise supported to receive instructions from the base station for separately counting the combination of each downlink control channel candidate in the first group of downlink control channel candidates with the corresponding downlink control channel candidate in the second group of downlink candidates, and the number of downlink control channel candidates in the second group of downlink control channel candidates, against the BD limit of the second TTI, wherein the determination of the total number of downlink control channel candidates associated with the second SS set is based on the instructions.

[0154] Alternatively or additionally, the communication manager 720 may support wireless communication at the UE according to the examples disclosed herein. In some examples, the configuration message manager 725 may be configured or otherwise supported as a unit for receiving a configuration message from a base station indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second SS set of the TTI. The overbooking condition manager 740 may be configured or otherwise supported as a unit for determining that there are overbooking conditions associated with overbooking of downlink control channel candidates within the TTI. In some examples, the overbooking condition manager 740 may be configured or otherwise supported as a unit for evaluating overbooking conditions based on the corresponding number of downlink control channel candidates in the first set and the second set. In some examples, the monitoring manager 735 may be configured or otherwise supported as a unit for monitoring downlink control channel transmissions during the TTI based on the evaluation of overbooking conditions.

[0155] In some examples, the monitoring manager 735 may be configured or otherwise supported as a unit for comparing a first index value associated with a first SS set and a second index value associated with a second SS set. In some examples, the monitoring manager 735 may be configured or otherwise supported as a unit for determining whether an oversubscription condition is met by counting each downlink control channel candidate in the second set of downlink control channel candidates twice, based on the determination that the second index value associated with the second SS set is greater than the first index value associated with the first SS set.

[0156] In some examples, to support the evaluation of overbooking conditions, the overbooking condition manager 740 may be configured or otherwise support a unit for determining whether overbooking conditions are met by evaluating together the number of downlink control channel candidates in the first group, the number of downlink control channel candidates in the second group, and each combination of each downlink control channel candidate in the first group and the corresponding downlink control channel candidate in the second group.

[0157] In some examples, to support the evaluation of overbooking conditions, the overbooking condition manager 740 may be configured or otherwise support: a unit for determining whether an overbooking condition is met by evaluating the number of downlink control channel candidates in a first group or a second group of downlink control channel candidates and a third group of downlink control channel candidates, wherein the third group includes a combination of each downlink control channel candidate in the first group of downlink control channel candidates and the corresponding downlink control channel candidate in the second group of downlink control channel candidates.

[0158] In some examples, the monitoring timing manager 750 may be configured or otherwise supported as a unit for comparing the last monitoring timing of the first SS set with the last monitoring timing of the second SS set. In some examples, the monitoring timing manager 750 may be configured or otherwise supported as a unit for determining that the last monitoring timing of the first SS set is later in time than the last monitoring timing of the second SS set. In some examples, the monitoring timing manager 750 may be configured or otherwise supported as a unit for determining, based on the determination that the last monitoring timing of the first SS set is later in time than the last monitoring timing of the second SS set, the number of downlink control channel candidates in the first group to be monitored, and each combination of each downlink control channel candidate in the first group with the corresponding downlink control channel candidate in the second group.

[0159] In some examples, the monitoring manager 735 may be configured or otherwise supported as a unit for comparing a first index value associated with a first SS set and a second index value associated with a second SS set. In some examples, the monitoring manager 735 may be configured or otherwise supported as a unit for determining the number of second and third downlink control channel candidates to be monitored together based on the determination that the second index value associated with the second SS set is greater than the first index value associated with the first SS set.

[0160] In some examples, the monitoring manager 735 may be configured or otherwise supported as a unit for comparing a first index value of a first control resource set associated with a first SS set and a second index of a second control resource set associated with a second SS set. In some examples, the monitoring manager 735 may be configured or otherwise supported as a unit for determining, based on the comparison, whether to monitor the number of downlink control channel candidates in the first group, and each combination of each downlink control channel candidate in the first group with a corresponding downlink control channel candidate in the second group.

[0161] In some examples, to support the evaluation of overbooking conditions, the overbooking condition manager 740 may be configured or otherwise support a unit for determining whether overbooking conditions are met by evaluating, separately from each other, a first set of downlink control channel candidates, a second set of downlink control channel candidates, and combinations of each downlink control channel candidate in the first set of downlink control channel candidates with the corresponding downlink control channel candidate in the second set of downlink control channel candidates.

[0162] In some examples, the TTI includes either a time slot or a time span.

[0163] Figure 8 A schematic diagram of a system 800 including device 805 supporting BD limits and overbooking for PDCCH repetition is shown according to various aspects of this disclosure. Device 805 may be an example of device 505, device 605, or UE 115 as described herein, or a component including device 505, device 605, or UE 115. Device 805 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 805 may include components for bidirectional voice and data communication, including components for transmitting communication and components for receiving communication, such as a communication manager 820, an input / output (I / O) controller 810, a transceiver 815, an antenna 825, a memory 830, a code 835, and a processor 840. These components may communicate electronically via one or more buses (e.g., bus 845) or be otherwise coupled (e.g., operative coupling, communicative coupling, functional coupling, electronic coupling, electrical coupling).

[0164] I / O controller 810 can manage input and output signals for device 805. I / O controller 810 can also manage peripheral devices not integrated into device 805. In some cases, I / O controller 810 can represent physical connections or ports to external peripheral devices. In some cases, I / O controller 810 can utilize, for example... This could be an operating system such as I / O controller 810 or another known operating system. Alternatively, I / O controller 810 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, I / O controller 810 may be implemented as part of a processor (such as processor 840). In some cases, a user may interact with device 805 via I / O controller 810 or via hardware components controlled by I / O controller 810.

[0165] In some cases, the device 805 may include a single antenna 825. However, in other cases, the device 805 may have more than one antenna 825, which are capable of simultaneously transmitting or receiving multiple wireless transmissions. The transceiver 815 may communicate bidirectionally via one or more antennas 825, a wired link, or a wireless link, as described herein. For example, the transceiver 815 may represent a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. The transceiver 815 may also include a modem for modulating packets to provide modulated packets to one or more antennas 825 for transmission, and for demodulating packets received from one or more antennas 825. As described herein, the transceiver 815, or the transceiver 815 and one or more antennas 825, may be an example of transmitter 515, transmitter 615, receiver 510, receiver 610, or any combination thereof or component thereof.

[0166] Memory 830 may include random access memory (RAM) and read-only memory (ROM). Memory 830 may store computer-readable, computer-executable code 835, including instructions that, when executed by processor 840, cause device 805 to perform the various functions described herein. Code 835 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 835 may not be directly executable by processor 840, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 830 may contain a basic I / O system (BIOS) and other things that control basic hardware or software operations (such as interaction with peripheral components or devices).

[0167] Processor 840 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, GPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 840 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 840. Processor 840 may be configured to execute computer-readable instructions stored in memory (e.g., memory 830) to cause device 805 to perform various functions (e.g., functions or tasks supporting BD limits and overbooking for PDCCH repetition). For example, device 805 or components of device 805 may include processor 840 and memory 830 coupled to processor 840, processor 840 and memory 830 being configured to perform the various functions described herein.

[0168] The communication manager 820 may support wireless communication at the UE according to the examples disclosed herein. For example, the communication manager 820 may be configured or otherwise support: a unit for receiving a configuration message from a base station indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI. The communication manager 820 may be configured or otherwise support: a unit for determining the total number of downlink control channel candidates associated with the second SS set to be counted for the BD limit of the second TTI by counting each downlink control channel candidate in the second group of downlink control channel candidates twice. The communication manager 820 may be configured or otherwise support: a unit for monitoring downlink control channel transmissions during a second TTI based on the count of the BD limit for the second TTI.

[0169] Alternatively or concurrently, the communication manager 820 may support wireless communication at the UE according to the examples disclosed herein. For example, the communication manager 820 may be configured or otherwise support: a unit for receiving a configuration message from a base station indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second SS set of the TTI. The communication manager 820 may be configured or otherwise support: a unit for determining the existence of overbooking conditions associated with overbooking of downlink control channel candidates within the TTI. The communication manager 820 may be configured or otherwise support: a unit for evaluating overbooking conditions based on the corresponding numbers of the first set of downlink control channel candidates and the second set of downlink control channel candidates. The communication manager 820 may be configured or otherwise support: a unit for monitoring downlink control channel transmissions during the TTI based on the evaluation of the overbooking conditions.

[0170] By including or configuring the communication manager 820 according to the examples described herein, the device 805 can support technologies for PDCCH monitoring, resulting in improved system efficiency, more efficient use of available resources, more efficient use of UE computing resources, and so on.

[0171] In some examples, the communication manager 820 may be configured to use, or otherwise cooperate with, transceiver 815, one or more antennas 825, or any combination thereof, to perform various operations (e.g., receiving, monitoring, transmitting). Although the communication manager 820 is shown as a separate component, in some examples, one or more functions described with reference to the communication manager 820 may be supported or performed by processor 840, memory 830, code 835, or any combination thereof. For example, code 835 may include instructions executable by processor 840 to cause device 805 to perform various aspects of BD limits and oversubscription for PDCCH repetition as described herein, or processor 840 and memory 830 may be additionally configured to perform or support such operations.

[0172] Figure 9 A flowchart illustrating method 900 for supporting BD restrictions and overbooking for PDCCH duplication according to various aspects of this disclosure is shown. Operation of method 900 can be implemented by a UE or its components as described herein. For example, operation of method 900 can be implemented by, as referred to... Figures 1 to 8The UE 115 described herein is used to perform this function. In some examples, the UE may execute a set of instructions to control the functional units of the UE to perform the described function. Alternatively or concurrently, the UE may use dedicated hardware to perform aspects of the described function.

[0173] At 905, the method may include: receiving a configuration message from a base station indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI. The operation of 905 can be performed according to the examples disclosed herein. In some examples, aspects of the operation of 905 may be provided by reference to... Figure 7 The described configuration message manager 725 is used to execute this.

[0174] At 910, the method may include: determining the total number of downlink control channel candidates associated with the second SS set to be counted for the BD limit of the second TTI by counting each downlink control channel candidate in the second set of downlink control channel candidates twice. The operation at 910 can be performed according to the examples disclosed herein. In some examples, aspects of the operation at 910 may be as described in reference... Figure 7 The control channel candidate manager 730 described herein is used to perform this action.

[0175] At 915, the method may include: monitoring downlink control channel transmissions during the second TTI based on a count of the BD limit for the second TTI. The operation of 915 can be performed according to the examples disclosed herein. In some examples, aspects of the operation of 915 may be derived from, as referenced... Figure 7 The monitoring manager 740 described is used to perform this.

[0176] Figure 10 A flowchart illustrating method 1000 for supporting BD restrictions and overbooking for PDCCH duplication according to various aspects of this disclosure is shown. Operation of method 1000 can be implemented by a UE or its components as described herein. For example, operation of method 1000 can be implemented by, as described in reference... Figures 1 to 8 The UE 115 described herein is used to perform this function. In some examples, the UE may execute a set of instructions to control the functional units of the UE to perform the described function. Alternatively or concurrently, the UE may use dedicated hardware to perform aspects of the described function.

[0177] At 1005, the method may include: receiving a configuration message from a base station, the configuration message indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI. The operation at 1005 can be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1005 may be determined by reference to... Figure 7 The described configuration message manager 725 is used to execute this.

[0178] At 1010, the method may include: determining the total number of downlink control channel candidates associated with the second SS set to be counted for the BD limit of the second TTI by counting each downlink control channel candidate in the second set of downlink control channel candidates twice. The operation of 1010 can be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1010 may be as described in reference... Figure 7 The control channel candidate manager 730 described herein is used to perform this action.

[0179] At 1015, the method may include: monitoring downlink control channel transmissions during the second TTI based on a count of the BD limit for the second TTI. The operation at 1015 can be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1015 may be determined by reference to... Figure 7 The monitoring manager 740 described is used to perform this.

[0180] At 1020, the method may include: determining, based on a configuration message, to count the first set of downlink control channel candidates, the second set of downlink control channel candidates, and the third set of downlink control channel candidates for a BD limit per TTI, wherein the third set of downlink control channel candidates includes combinations of each downlink control channel candidate in the first set of downlink control channel candidates and corresponding downlink control channel candidates in the second set of downlink control channel candidates; and monitoring downlink control channel transmission during the second TTI based on the count of the BD limit for the second TTI. The operation at 1020 can be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1020 may be determined by reference to... Figure 7 The candidate count manager 750 described is used to perform this.

[0181] At 1025, the method may include: counting the second set of downlink control channel candidates and the third set of downlink control channel candidates against the BD limit for the second TTI. The operation at 1025 can be performed according to the examples disclosed herein.

[0182] At 1030, the method may include: monitoring downlink control channel transmissions during the second TTI based on a count performed against a BD limit for the second TTI. The operation of 1030 can be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1030 may be derived as described in reference... Figure 7 The monitoring manager 740 described is used to perform this.

[0183] Figure 11 A flowchart illustrating method 1100 for supporting BD restrictions and overbooking for PDCCH duplication according to various aspects of this disclosure is shown. Operation of method 1100 can be implemented by a UE or its components as described herein. For example, operation of method 1100 can be implemented by, as described in reference... Figures 1 to 8 The UE 115 described herein is used to perform this function. In some examples, the UE may execute a set of instructions to control the functional units of the UE to perform the described function. Alternatively or concurrently, the UE may use dedicated hardware to perform aspects of the described function.

[0184] At 1105, the method may include: receiving a configuration message from a base station indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of the TTI. The operation of 1105 can be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1105 may be determined by reference to... Figure 7 The described configuration message manager 725 is used to execute this.

[0185] At 1110, the method may include: determining that an overbooking condition exists associated with an overbooking of a downlink control channel candidate within the TTI. The operation at 1110 can be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1110 may be determined by reference to... Figure 7 The overbooking conditions manager 745 described is used to perform this.

[0186] At 1115, the method may include: evaluating overbooking conditions based on the corresponding numbers of the first set of downlink control channel candidates and the second set of downlink control channel candidates. The operation at 1115 can be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1115 may be determined by reference to... Figure 7 The overbooking conditions manager 745 described is used to perform this.

[0187] At 1120, the method may include: monitoring downlink control channel transmissions during the TTI based on an assessment of overbooking conditions. The operation at 1120 can be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1120 may be determined by reference to... Figure 7 The monitoring manager 740 described is used to perform this.

[0188] Aspect 1: A method for wireless communication at a UE, comprising: receiving a configuration message from a base station, the configuration message indicating that each downlink control channel candidate in a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI; determining the total number of downlink control channel candidates associated with the second SS set to be counted for a BD limit for the second TTI by counting each downlink control channel candidate in the second group of downlink control channel candidates twice.

[0189] Aspect 2: The method according to aspect 1 further includes: determining that there is an overbooking condition associated with overbooking of downlink control channel candidates within the second TTI; and evaluating the overbooking condition at least in part based on the corresponding number of the second set of downlink control channel candidates and each combination of each downlink control channel candidate in the first set of downlink control channel candidates and the corresponding downlink control channel candidate in the second set of downlink control channel candidates, wherein the monitoring of downlink control channel transmission is further based at least in part on the evaluation of the overbooking condition.

[0190] Aspect 3: According to the method of aspect 2, wherein evaluating the overbooking condition includes determining whether the overbooking condition is met by jointly evaluating the total number of downlink control channel candidates associated with the second SS set.

[0191] Aspect 4: The method according to any one of Aspects 2 to 3, wherein evaluating the overbooking condition comprises: determining whether the overbooking condition is met by separately evaluating the combination of the second set of downlink control channel candidates and each downlink control channel candidate in the first set of downlink control channel candidates with the corresponding downlink control channel candidate in the second set of downlink control channel candidates.

[0192] Aspect 5: The method according to any one of Aspects 1 to 4 further comprises: determining, at least in part based on the configuration message, to count the first set of downlink control channel candidates, the second set of downlink control channel candidates, and the third set of downlink control channel candidates for a BD limit per TTI, wherein the third set of downlink control channel candidates includes combinations of each downlink control channel candidate in the first set of downlink control channel candidates and corresponding downlink control channel candidates in the second set of downlink control channel candidates; and monitoring downlink control channel transmission during the second TTI based on the count of the BD limit for the second TTI; counting the second set of downlink control channel candidates and the third set of downlink control channel candidates for the BD limit of the second TTI; and monitoring downlink control channel transmission during the second TTI based at least in part on the count of the BD limit for the second TTI.

[0193] Aspect 6: The method according to aspect 6 further includes: determining that there is an overbooking condition associated with overbooking of downlink control channel candidates within the first TTI; and evaluating the overbooking condition at least in part based on the corresponding number of downlink control channel candidates in the first group and each combination of each downlink control channel candidate in the first group and a corresponding downlink control channel candidate in the second group, wherein the monitoring of downlink control channel transmission is further based at least in part on the evaluation of the overbooking condition.

[0194] Aspect 7: According to the method of aspect 6, wherein evaluating the overbooking condition includes determining whether the overbooking condition is met by jointly evaluating the total number of downlink control channel candidates associated with the first SS set.

[0195] Aspect 8: The method according to any one of Aspects 6 to 7, wherein evaluating the overbooking condition comprises: determining whether the overbooking condition is satisfied by separately evaluating the first set of downlink control channel candidates and the combination of each downlink control channel candidate in the first set of downlink control channel candidates with the corresponding downlink control channel candidate in the second set of downlink control channel candidates.

[0196] Aspect 9: The method according to any one of Aspects 1 to 8, wherein the second TTI includes one of a time slot or a time span, and the first TTI includes one of a time slot or a time span.

[0197] Aspect 10: The method according to any one of Aspects 1 to 9 further comprises: receiving from the base station instructions for: separately counting combinations of each downlink control channel candidate in the first set of downlink control channel candidates with corresponding downlink control channel candidates in the second set of downlink candidates and the number of downlink control channel candidates in the second set of downlink control channel candidates with respect to the BD limit of the second TTI, wherein determining the total number of downlink control channel candidates associated with the second SS set is at least partially based on the instructions.

[0198] Aspect 11: The method according to any one of Aspects 1 to 10, wherein the other downlink control channel candidates associated with the second TTI correspond to a third SS set, or a UE-specific SS, or a common SS.

[0199] Aspect 12: A method for wireless communication at a UE, comprising: receiving a configuration message from a base station, the configuration message indicating that each downlink control channel candidate in a first set of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second SS set of the TTI; determining that there exists an overbooking condition associated with overbooking of downlink control channel candidates within the TTI; evaluating the overbooking condition at least in part based on the corresponding numbers of the first set of downlink control channel candidates and the second set of downlink control channel candidates; and monitoring downlink control channel transmissions during the TTI at least in part based on the evaluation of the overbooking condition.

[0200] Aspect 13: The method according to aspect 12 further includes: comparing a first index value associated with the first SS set and a second index value associated with the second SS set; and determining whether the overbooking condition is met by counting each downlink control channel candidate in the second group of downlink control channel candidates twice, based at least in part on determining that the second index value associated with the second SS set is greater than the first index value associated with the first SS set.

[0201] Aspect 14: According to the method of aspect 12, wherein evaluating the overbooking condition includes: determining whether the overbooking condition is met by jointly evaluating the number of the first group of downlink control channel candidates, the number of the second group of downlink control channel candidates, and each combination of each downlink control channel candidate in the first group of downlink control channel candidates and the corresponding downlink control channel candidate in the second group of downlink control channel candidates.

[0202] Aspect 15: The method according to any one of Aspects 12 to 14, wherein evaluating the overbooking condition comprises: determining whether the overbooking condition is met by evaluating the number of the first group of downlink control channel candidates or the second group of downlink control channel candidates and the third group of downlink control channel candidates, wherein the third group comprises a combination of each downlink control channel candidate in the first group of downlink control channel candidates and a corresponding downlink control channel candidate in the second group of downlink control channel candidates.

[0203] Aspect 16: The method according to aspect 15 further includes: comparing the last monitoring time of the first SS set with the last monitoring time of the second SS set; determining that the last monitoring time of the first SS set is later in time than the last monitoring time of the second SS set; and determining, at least in part, whether to monitor the number of the first group of downlink control channel candidates, and each combination of each downlink control channel candidate in the first group of downlink control channel candidates with the corresponding downlink control channel candidate in the second group of downlink control channel candidates, based on the determination that the last monitoring time of the first SS set is later in time than the last monitoring time of the second SS set.

[0204] Aspect 17: The method according to any one of Aspects 15 to 16 further comprises: comparing a first index value associated with the first SS set and a second index value associated with the second SS set; and determining, at least in part, the number of the second group of downlink control channel candidates and the third group of downlink control channel candidates to be monitored together based on determining that the second index value associated with the second SS set is greater than the first index value associated with the first SS set.

[0205] Aspect 18: The method according to any one of Aspects 15 to 17 further comprises: comparing a first index value of a first control resource set associated with the first SS set and a second index of a second control resource set associated with the second SS set; and determining, at least in part based on the comparison, whether to monitor the number of the first set of downlink control channel candidates, and each combination of each downlink control channel candidate in the first set of downlink control channel candidates with a corresponding downlink control channel candidate in the second set of downlink control channel candidates.

[0206] Aspect 19: The method according to any one of Aspects 12 to 18, wherein evaluating the overbooking condition comprises: determining whether the overbooking condition is satisfied by separately evaluating the first set of downlink control channel candidates, the second set of downlink control channel candidates, and combinations of each downlink control channel candidate in the first set of downlink control channel candidates and corresponding downlink control channel candidates in the second set of downlink control channel candidates.

[0207] Aspect 20: The method according to any one of Aspects 12 to 19, wherein the TTI includes one of a time slot or a time span.

[0208] Aspect 21: An apparatus for wireless communication at a UE, comprising: at least one processor; and a memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to perform the method according to any one of aspects 1 to 11.

[0209] Aspect 22: An apparatus for wireless communication at a UE, comprising: at least one unit for performing the method described in any one of aspects 1 to 11.

[0210] Aspect 23: A non-transitory computer-readable medium storing code for wireless communication at a UE, said code including instructions executable by a processor to perform the methods described in any one of Aspects 1 to 11.

[0211] Aspect 24: An apparatus for wireless communication at a UE, comprising: at least one processor; and a memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to perform the method according to any one of aspects 12 to 20.

[0212] Aspect 25: An apparatus for wireless communication at a UE, comprising: at least one unit for performing the method described in any one of aspects 12 to 20.

[0213] Aspect 26: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code including instructions executable by a processor to perform the methods described in any one of Aspects 12 to 20.

[0214] It should be noted that the methods described in this paper describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods can be combined.

[0215] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in much of the description, the technologies described herein are applicable to areas beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the technologies described may be applicable to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0216] The information and signals described herein can be represented using any of a variety of different technologies and processes. For example, the data, instructions, commands, information, signals, bits, symbols, and chips mentioned in the description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0217] The various illustrative blocks and components described herein can be implemented or performed using general-purpose processors, DSPs, ASICs, CPUs, GPUs, FPGAs, or other programmable logic devices, 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, it may be any processor, controller, microcontroller, or state machine. Processors can also be implemented as combinations of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration).

[0218] The functionality described herein may be implemented in hardware, software executed by a processor, or any combination thereof. Regardless of whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, software should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, etc. If implemented in software executed by a processor, the functionality may be stored as one or more instructions or code on or transmitted through a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functionality described herein may be implemented using software executed by a processor, hardware, hardwiring, or any combination of these. Features implementing the functionality may also be physically located in various locations, including being distributed such that portions of the functionality are implemented in different physical locations. Regardless of whether it is called software, middleware, microcode, hardware description language, or otherwise, software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, etc. If implemented in software executed by a processor, the function can be stored as one or more instructions or code on or transmitted through a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, hardwiring, or any combination of these. Features implementing the function can also be physically located in various locations, including being distributed such that portions of the function are implemented in different physical locations.

[0219] Computer-readable media include both non-transitory computer storage media and communication media, wherein the communication media includes any medium that facilitates the transfer of a computer program from one place to another. Non-transitory storage media can be any available medium that can be accessed by a general-purpose computer or a special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, phase-change memory, compressed optical disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code units in the form of instructions or data structures, and that can be accessed by a general-purpose computer or a special-purpose computer, or a general-purpose processor or a special-purpose processor. Additionally, any connection is appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs, where disks typically copy data magnetically, while optical discs use lasers to copy data optically. The combinations described above are also included within the scope of computer-readable media.

[0220] As used herein (including in the claims), the word "or" as used in a list of entries (e.g., a list of entries beginning with phrases such as "at least one of" or "one or more of") indicates an inclusive list, such that a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (e.g., A and B and C). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same way as the phrase "at least partially based on". As used herein, the term "and / or," when used in a list of two or more entries, means any of the listed entries that may be adopted by itself, or any combination of two or more of the listed entries that may be adopted. For example, if a component is described as containing components A, B, and / or C, then the component may contain a single A; a single B; a single C; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C.

[0221] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by a dash followed by a second reference numeral, used to differentiate between similar components. If only the first reference numeral is used in the specification, the description applies to any one of the similar components having the same first reference numeral, regardless of the second reference numeral or other subsequent reference numerals.

[0222] The exemplary configurations described herein, illustrated in conjunction with the accompanying drawings, are not representative of all examples that can be implemented or are within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," and not "preferred" or "advantageous over other examples." Specific details are included in the detailed descriptions to provide an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0223] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is given the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: receiving, from a base station, a configuration message indicating that each of a first group of downlink control channel candidates in a first search space set of a first transmission time interval is associated with a corresponding downlink control channel candidate in a second group of downlink control channel candidates in a second search space set of a second transmission time interval after the first transmission time interval; determining a total number of downlink control channel candidates associated with the second search space set to be counted against a blind decoding limit for the second transmission time interval by counting each of the second group of downlink control channel candidates twice; and monitoring for a downlink control channel transmission during the second transmission time interval based at least in part on the counting against the blind decoding limit for the second transmission time interval.

2. The method of claim 1, further comprising: determining, based at least in part on the configuration message, to count the first group of downlink control channel candidates, the second group of downlink control channel candidates, and a third group of downlink control channel candidates against a blind decoding limit per transmission time interval, wherein the third group of downlink control channel candidates comprises a combination of each of the first group of downlink control channel candidates and a corresponding downlink control channel candidate of the second group of downlink control channel candidates; counting the second group of downlink control channel candidates and the third group of downlink control channel candidates against the blind decoding limit for the second transmission time interval; and monitoring for a downlink control channel transmission during the second transmission time interval based at least in part on the counting against the blind decoding limit for the second transmission time interval.

3. The method of claim 1, further comprising: determining that an overbooking condition is associated with an overbooking of downlink control channel candidates within the first transmission time interval; and evaluating the overbooking condition based at least in part on a respective number of the first group of downlink control channel candidates and each combination of each of the first group of downlink control channel candidates and a corresponding downlink control channel candidate of the second group of downlink control channel candidates, wherein the monitoring for a downlink control channel transmission is further based at least in part on the evaluating of the overbooking condition. evaluating the overbooking condition comprises: determining whether the overbooking condition is satisfied by evaluating a total number of downlink control channel candidates associated with the first search space set together.

4. The method of claim 3, wherein, evaluating the overbooking condition comprises: determining whether the overbooking condition is satisfied by evaluating a total number of downlink control channel candidates associated with the first search space set together.

5. The method of claim 3, wherein, ​ determining whether the overbooking condition is satisfied by evaluating the overbooking condition separately for each combination of a respective downlink control channel candidate in the first set of downlink control channel candidates and a corresponding downlink control channel candidate in the second set of downlink control channel candidates.

6. The method of claim 1, further comprising: determining that an overbooking condition associated with overbooking of downlink control channel candidates within the second transmission time interval exists; and evaluating the overbooking condition based at least in part on a respective number of the second set of downlink control channel candidates and each combination of a respective downlink control channel candidate in the first set of downlink control channel candidates and a corresponding downlink control channel candidate in the second set of downlink control channel candidates, wherein the monitoring for downlink control channel transmissions is further based at least in part on the evaluation of the overbooking condition.

7. The method of claim 6, wherein, evaluating the overbooking condition comprises: determining whether the overbooking condition is satisfied by evaluating a total number of downlink control channel candidates associated with the second search space set together.

8. The method of claim 6, wherein, evaluating the overbooking condition comprises: determining whether the overbooking condition is satisfied by evaluating the overbooking condition separately for each combination of a respective downlink control channel candidate in the first set of downlink control channel candidates and a corresponding downlink control channel candidate in the second set of downlink control channel candidates.

9. The method of claim 1, wherein: the second transmission time interval comprises one of a slot or a time span, and the first transmission time interval comprises one of a slot or a time span.

10. The method of claim 1, further comprising: receiving, from the base station, an instruction to separately count, for the second transmission time interval, a combination of a respective downlink control channel candidate in the first set of downlink control channel candidates and a corresponding downlink control channel candidate in the second set of downlink control channel candidates and a number of downlink control channel candidates in the second set of downlink control channel candidates for the blind decoding limit, wherein determining the total number of downlink control channel candidates associated with the second search space set is based at least in part on the instruction.

11. An apparatus for wireless communication at a user equipment (UE), comprising: at least one processor; and a memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to: receive, from a base station, a configuration message indicating that a respective downlink control channel candidate in a first set of downlink control channel candidates in a first search space set of a first transmission time interval is associated with a corresponding downlink control channel candidate in a second set of downlink control channel candidates in a second search space set of a second transmission time interval after the first transmission time interval; determining a total number of downlink control channel candidates associated with the second search space set to count against a blind decoding limit for the second transmission time interval by counting each of the second set of downlink control channel candidates twice; and monitoring for a downlink control channel transmission during the second transmission time interval based at least in part on the counting against the blind decoding limit for the second transmission time interval.

12. The apparatus of claim 11, wherein, The instructions can be further executable by the at least one processor to cause the apparatus to: determine to count the first set of downlink control channel candidates, the second set of downlink control channel candidates, and a third set of downlink control channel candidates against a blind decoding limit per transmission time interval based at least in part on the configuration message, wherein the third set of downlink control channel candidates comprises a combination of individual downlink control channel candidates of the first set of downlink control channel candidates with corresponding downlink control channel candidates of the second set of downlink control channel candidates; count the second set of downlink control channel candidates and the third set of downlink control channel candidates against the blind decoding limit for the second transmission time interval; and monitor for a downlink control channel transmission during the second transmission time interval based at least in part on the counting against the blind decoding limit for the second transmission time interval.

13. The apparatus of claim 11, wherein, The instructions can be further executable by the at least one processor to cause the apparatus to: determine that an overbooking condition is associated with an overbooking of downlink control channel candidates within the first transmission time interval; and evaluate the overbooking condition based at least in part on a respective number of the first set of downlink control channel candidates and each combination of individual downlink control channel candidates of the first set of downlink control channel candidates with corresponding downlink control channel candidates of the second set of downlink control channel candidates, wherein the monitoring for a downlink control channel transmission is further based at least in part on the evaluation of the overbooking condition.

14. The apparatus of claim 13, wherein, The instructions to evaluate the overbooking condition can be executable by the at least one processor to cause the apparatus to: determine whether the overbooking condition is satisfied by evaluating a total number of downlink control channel candidates associated with the first search space set together.

15. The apparatus of claim 13, wherein, The instructions to evaluate the overbooking condition can be executable by the at least one processor to cause the apparatus to: determine whether the overbooking condition is satisfied by evaluating the first set of downlink control channel candidates and the combinations of individual downlink control channel candidates of the first set of downlink control channel candidates with corresponding downlink control channel candidates of the second set of downlink control channel candidates separately.

16. The apparatus of claim 11, wherein, The instructions can be further executable by the at least one processor to cause the apparatus to: determining that an overbooking condition associated with overbooking of downlink control channel candidates in the second transmission time interval exists; and evaluating the overbooking condition based at least in part on a respective number of the second set of downlink control channel candidates and each combination of a respective downlink control channel candidate of the first set of downlink control channel candidates and a corresponding downlink control channel candidate of the second set of downlink control channel candidates, wherein the monitoring for downlink control channel transmissions is further based at least in part on the evaluation of the overbooking condition.

17. The apparatus of claim 16, wherein, The instructions to evaluate the overbooking condition can be executable by the at least one processor to cause the apparatus to: determine whether the overbooking condition is satisfied by separately evaluating the combination of a respective downlink control channel candidate of the first set of downlink control channel candidates and a corresponding downlink control channel candidate of the second set of downlink control channel candidates.

18. The apparatus of claim 16, wherein, The instructions to evaluate the overbooking condition can be executable by the at least one processor to cause the apparatus to: determine whether the overbooking condition is satisfied by evaluating a total number of downlink control channel candidates associated with the second search space set together.

19. The apparatus of claim 11, wherein: the second transmission time interval comprises one of a slot or a time span; and the first transmission time interval comprises one of a slot or a time span.

20. The apparatus of claim 11, wherein, The instructions can be further executable by the at least one processor to cause the apparatus to: receive, from the base station, instructions to separately count a combination of a respective downlink control channel candidate of the first set of downlink control channel candidates and a corresponding downlink control channel candidate of the second set of downlink control channel candidates and a number of downlink control channel candidates of the second set of downlink control channel candidates against the blind decoding limit for the second transmission time interval, wherein determining the total number of downlink control channel candidates associated with the second search space set is based at least in part on the instructions.

21. An apparatus for wireless communication at a user equipment (UE), comprising: means for receiving, from a base station, a configuration message indicating that a respective downlink control channel candidate of a first set of downlink control channel candidates in a first search space set of a first transmission time interval is associated with a corresponding downlink control channel candidate of a second set of downlink control channel candidates in a second search space set of a second transmission time interval after the first transmission time interval; means for determining a total number of downlink control channel candidates associated with the second search space set to be counted against a blind decoding limit for the second transmission time interval by counting each downlink control channel candidate of the second set of downlink control channel candidates twice; and means for monitoring, during the second transmission time interval, for a downlink control channel transmission based at least in part on the counting of the blind decoding limit for the second transmission time interval.

22. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by at least one processor to: receive, from a base station, a configuration message indicating that individual downlink control channel candidates of a first group of downlink control channel candidates in a first search space set of a first transmission time interval are associated with corresponding downlink control channel candidates of a second group of downlink control channel candidates in a second search space set of a second transmission time interval after the first transmission time interval; determine a total number of downlink control channel candidates associated with the second search space set to count against a blind decoding limit for the second transmission time interval by counting each downlink control channel candidate of the second group of downlink control channel candidates twice; and monitor, during the second transmission time interval, for a downlink control channel transmission based at least in part on the counting of the blind decoding limit for the second transmission time interval.

23. An apparatus for wireless communication at a user equipment (UE), comprising: a controller associated with a memory device, wherein the controller is configured to cause the apparatus to: receive, from a base station, a configuration message indicating that individual downlink control channel candidates of a first group of downlink control channel candidates in a first search space set of a first transmission time interval are associated with corresponding downlink control channel candidates of a second group of downlink control channel candidates in a second search space set of a second transmission time interval after the first transmission time interval; determine a total number of downlink control channel candidates associated with the second search space set to count against a blind decoding limit for the second transmission time interval by counting each downlink control channel candidate of the second group of downlink control channel candidates twice; and monitor, during the second transmission time interval, for a downlink control channel transmission based at least in part on the counting of the blind decoding limit for the second transmission time interval.

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