Blind decoding limiting and overbooking for physical downlink control channel repetition - Patents.com

Abstract

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

Description

Claiming priority

[0001] cross reference

[0001] This patent application claims the benefit of U.S. Provisional Patent Application No. 63 / 136,295, entitled "BLIND DECODING LIMITS AND OVERBOOKING FOR PHYSICAL DOWNLINK CONTROL CHANNEL REPETITION," filed on January 12, 2021, by KHOSHNEVISAN et al., and U.S. Patent Application No. 17 / 573,250, entitled "BLIND DECODING LIMITS AND OVERBOOKING FOR PHYSICAL DOWNLINK CONTROL CHANNEL REPETITION," filed on January 11, 2022, by KHOSHNEVISAN et al., each of which is assigned to the assignee of this application. [Technical field]

[0002] The following relates to wireless communications, including blind decoding limitations and overbooking for physical downlink control channel repetitions. [Background technology]

[0003]

[0003] Wireless communication systems have been widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasts. These systems may be capable of supporting 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), LTE Advanced (LTE-A), or LTE-A Pro systems, and fifth generation (5G) systems, sometimes referred to as 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 Spread 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 simultaneously supporting communication for multiple communication devices, which may in some cases be known as user equipment (UE). In some examples, the UE may support physical downlink control channel (PDCCH) repetition. Summary of the Invention

[0004]

[0004] The described techniques relate to improved methods, systems, devices, and apparatuses that support blind decoding (BD) limit and overbooking for physical downlink control channel (PDCCH) repetitions. In general, a user equipment (UE) can receive a configuration message indicating that individual PDCCH candidates of a first search space (SS) set in a first transmission time interval (TTI) (e.g., slot or span) are linked to corresponding PDCCH candidates of a second SS set in a second TTI. The UE may be limited in terms of the total number of PDCCH candidates that are allowed to be monitored in a given TTI (e.g., BD limit). The UE can count PDCCH candidates in the first SS set toward a BD limit of the first TTI and can count PDCCH candidates in the second SS set toward a BD limit of the second TTI. The UE may count a combination of a PDCCH candidate in a first TTI and a PDCCH candidate in a second TTI towards the BD restriction of the second TTI only, or may count a combination of a PDCCH candidate in a first and a second TTI towards both the BD restriction of the first TTI and the BD restriction of the second TTI (e.g., a PDCCH candidate in a first SS set may be counted twice towards the BD restriction of the first TTI, or a PDCCH candidate in a second SS set may be counted twice towards the BD restriction of the second TTI, or both). Furthermore, the UE may consider a combination of PDCCH candidates together or separately from other PDCCH candidates in a TTI for the purpose of the overbooking procedure.

[0005] In some examples, the techniques described herein may also describe how a UE may be configured with a first SS set and a second SS set in the same TTI. In such examples, the UE may consider a first set of PDCCH candidates of the first SS set, a second set of PDCCH candidates of the second SS set, and a combination of the first set of PDCCH candidates and the second set of PDCCH candidates, all together, all separately, or any combination thereof (e.g., the combination of the first set of PDCCH candidates may be grouped with only one of the first set of PDCCH candidates and the second set of PDCCH candidates for an overbooking procedure).

[0006] A method for wireless communication in a UE is described, which may include receiving, from a base station, a configuration message indicating that each one of a first group of downlink control channel candidates in a first SS set of a first TTI is to be associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI, and determining a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit for the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice.

[0007] An apparatus for wireless communication in a UE is described. The apparatus may include at least one processor and a memory (e.g., operatively, communicatively, functionally, electronically, or electrically) coupled to the at least one processor, the memory storing instructions that may be executable by the at least one processor to cause the apparatus to receive a configuration message from a base station indicating that each one of a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI, and determine a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit for the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice.

[0008] Another apparatus for wireless communication in a UE is described, which may include means for receiving a configuration message from a base station indicating that each one of a first group of downlink control channel candidates in a first SS set of a first TTI is to be associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI, and means for determining a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit for the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice.

[0009] A non-transitory computer-readable medium storing code for wireless communication in a UE is described, which may include instructions executable by a processor to receive, from a base station, a configuration message indicating that each one of a first group of downlink control channel candidates in a first SS set of a first TTI is to be associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI following the first TTI, and determine a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit for the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice.

[0010]

[0010] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in the second TTI, and evaluating the overbooking condition based on the respective numbers of the second group of downlink control channel candidates and each combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates, and monitoring the downlink control channel transmissions may be further based on the evaluation of the overbooking condition.

[0011]

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include an operation, feature, means, or instruction for determining whether the overbooking condition may be met by evaluating together a total number of downlink control channel candidates associated with the second SS set.

[0012]

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, means, or instructions for determining whether the overbooking condition may be met by evaluating a second group of downlink control channel candidates separate from the combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0013]

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining 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 to count towards a BD limit per TTI based on a configuration message, where the third group of downlink control channel candidates comprises a combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates, monitoring downlink control channel transmissions during the second TTI based on counting the BD limit for the second TTI, counting the second group of downlink control channel candidates and the third group of downlink control channel candidates towards the BD limit for the second TTI, and monitoring downlink control channel transmissions during the second TTI based on counting towards the BD limit for the second TTI.

[0014]

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in the first TTI and evaluating the overbooking condition based on the respective numbers of the first group of downlink control channel candidates and each combination of an individual one of the first group of downlink control channel candidates with a corresponding one of the second group of downlink control channel candidates, and monitoring the downlink control channel transmissions may be further based on the evaluation of the overbooking condition.

[0015]

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include an operation, feature, means, or instruction for determining whether the overbooking condition may be met by jointly evaluating a total number of downlink control channel candidates associated with the first SS set.

[0016]

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, means, or instructions for determining whether the overbooking condition may be met by evaluating a first group of downlink control channel candidates separate from a combination of an individual one of the first group of downlink control channel candidates with a corresponding one of the second group of downlink control channel candidates.

[0017]

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification, 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.

[0018]

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include an operation, feature, means, or instruction for receiving from the base station an instruction to count combinations of individual ones of the first group of downlink control channel candidates and corresponding ones of the second group of downlink control channel candidates separately from the number of downlink control channel candidates in the second group of downlink control channel candidates toward the BD limit of the second TTI, and determining the total number of downlink control channel candidates associated with the second SS set may be based on the instruction.

[0019]

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification, the other downlink control channel candidate associated with the second TTI corresponds to a third SS set, or a UE-specific SS, or a common SS.

[0020] A method for wireless communication in a UE is described, which may include receiving a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of a TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI, determining that an overbooking condition exists associated with overbooking of the downlink control channel candidates in the TTI, evaluating the overbooking condition based on respective numbers of the first group of downlink control channel candidates and the second group of downlink control channel candidates, and monitoring downlink control channel transmissions during the TTI based on the evaluation of the overbooking condition.

[0021] An apparatus for wireless communication in a UE is described. The apparatus may include at least one processor and a memory (e.g., operatively, communicatively, functionally, electronically, or electrically) coupled to the at least one processor, the memory storing instructions that may be executable by the at least one processor to cause the apparatus to receive a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of a TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI, determine that an overbooking condition exists associated with overbooking of the downlink control channel candidates in the TTI, evaluate the overbooking condition based on a respective number of the first group of downlink control channel candidates and the second group of downlink control channel candidates, and monitor downlink control channel transmissions during the TTI based on the evaluation of the overbooking condition.

[0022] Another apparatus for wireless communication in a UE is described, which may include means for receiving a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of a TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI, means for determining that an overbooking condition exists associated with overbooking of the downlink control channel candidates in the TTI, means for evaluating the overbooking condition based on a respective number of the first group of downlink control channel candidates and the second group of downlink control channel candidates, and means for monitoring downlink control channel transmissions during the TTI based on the evaluation of the overbooking condition.

[0023] A non-transitory computer-readable medium storing code for wireless communication in a UE is described. The code may include instructions executable by a processor to receive, from a base station, a configuration message indicating that a respective one of a first group of downlink control channel candidates in a first SS set of a TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI, determine that an overbooking condition exists associated with overbooking of the downlink control channel candidates in the TTI, evaluate the overbooking condition based on a respective number of the first group of downlink control channel candidates and the second group of downlink control channel candidates, and monitor downlink control channel transmissions during the TTI based on the evaluation of the overbooking condition.

[0024]

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, means, or instructions for determining whether the overbooking condition may be met by evaluating a number of the first group of downlink control channel candidates or the second group of downlink control channel candidates, and a third group of downlink control channel candidates, the third group comprising a combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0025]

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining whether an overbooking condition may be met by counting each downlink control channel candidate in the second group of downlink control channel candidates twice based on comparing a first index value associated with the first SS set to a second index value associated with the second SS set and 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.

[0026]

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, means, or instructions for determining whether the overbooking condition may be satisfied by jointly evaluating the number of the first group of downlink control channel candidates and each combination of an individual one of the first group of downlink control channel candidates with a corresponding one of the second group of downlink control channel candidates.

[0027]

[0027] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for comparing the last monitoring opportunity of the first SS set with the last monitoring opportunity of the second SS set, determining that the last monitoring opportunity of the first SS set may be at a later time than the last monitoring opportunity of the second SS set, and determining whether to monitor the number of the first group of downlink control channel candidates and each combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates based on determining that the last monitoring opportunity of the first SS set may be at a later time than the last monitoring opportunity of the second SS set.

[0028]

[0028] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include an operation, feature, means, or instruction for determining a number of the second group of downlink control channel candidates and the third group of downlink control channel candidates to monitor together based on comparing a first index value associated with the first SS set to a second index value associated with the second SS set and 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.

[0029]

[0029] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include an operation, feature, means, or instruction for comparing a first index value of a first control resource set associated with a first SS set to a second index value of a second control resource set associated with a second SS set, and determining, based on the comparison, whether to monitor the number of first groups of downlink control channel candidates and each combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0030]

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, evaluating the overbooking condition may include operations, features, means, or instructions for determining whether the overbooking condition may be met by evaluating a first group of downlink control channel candidates, a second group of downlink control channel candidates, and a combination of each one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates separately from each other.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the TTI includes one of a time slot or a time span. [Brief description of the drawings]

[0032] [Figure 1] FIG. 1 illustrates an example of a wireless communication system that supports blind decoding (BD) restrictions and overbooking on physical downlink control channel (PDCCH) repetitions in accordance with an aspect of the present disclosure. [Diagram 2]

[0033] FIG. 2 illustrates an example of a wireless communication system that supports BD restrictions and overbooking on PDCCH repetitions, according to an aspect of the present disclosure. [Diagram 3]

[0034] FIG. 1 illustrates an example of a monitoring scheme that supports BD restrictions and overbooking on PDCCH repetitions, according to an aspect of the disclosure. [Figure 4]

[0035] FIG. 1 illustrates an example of a monitoring scheme that supports BD restrictions and overbooking on PDCCH repetitions, according to an aspect of the disclosure. [Diagram 5]

[0036] 1 is a block diagram of a device that supports BD restriction and overbooking on PDCCH repetitions, according to an aspect of the disclosure. [Figure 6] 1 is a block diagram of a device that supports BD restriction and overbooking on PDCCH repetitions, according to an aspect of the disclosure. [Figure 7]

[0037] 1 illustrates a block diagram of a communications manager supporting BD restrictions and overbooking on PDCCH repetitions, according to an aspect of the disclosure. [Figure 8]

[0038] FIG. 1 illustrates a diagram of a system including a device that supports BD restrictions and overbooking on PDCCH repetitions, according to an aspect of the disclosure. [Figure 9]

[0039] 1 is a flow chart illustrating a method for supporting BD restrictions and overbooking on PDCCH repetitions according to an aspect of the disclosure. [Figure 10]1 is a flow chart illustrating a method for supporting BD restrictions and overbooking on PDCCH repetitions according to an aspect of the disclosure. [Figure 11] 1 is a flow chart illustrating a method for supporting BD restrictions and overbooking on PDCCH repetitions according to an aspect of the disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033]

[0040] Some wireless communication systems may support physical downlink control channel (PDCCH) monitoring and PDCCH repetition. In some examples, the number of PDCCH candidates that may be monitored within a slot or span may be limited by a blind decoding (BD) limit. Nevertheless, in some cases, overbooking (e.g., configuring a number of PDCCH candidates that exceeds the BD limit for a transmission time interval (TTI)) may be allowed. An overbooked user equipment (UE) may identify configured PDCCH candidates and determine whether to monitor the configured PDCCH candidates based on one or more rules.

[0034]

[0041] Furthermore, the UE may be configured with PDCCH repetitions. In such a case, the base station may transmit control information multiple times across multiple repetitions. For the PDCCH repetitions, the PDCCH candidates of a first search space (SS) set may be linked with the PDCCH candidates of a second SS set. The UE may perform a soft combining procedure by combining the control signaling received in the first PDCCH candidate in the first SS set with the control signaling received in the second SS set. Thus, the UE may monitor a first set of PDCCH candidates (e.g., of the first SS set), a second set of PDCCH candidates (e.g., of 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 determine how to count the third set of PDCCH candidates with reference to the BD restriction, and may also determine how to perform an overbooking procedure based on the counting.

[0035]

[0042] The UE may be configured to count two linked PDCCH candidates for a repetition as three monitored PDCCH candidates toward the BD limit per TTI (e.g., slot or span). If the monitoring opportunities for the two linked SS sets are located in different TTIs, the UE may count the third set of PDCCH candidates (the combined PDCCH candidates constituting the first and second repetitions) toward the BD limit of both TTIs. Or, in some examples, the UE may count only the third set of PDCCH candidates toward the BD limit of one TTI (e.g., the second or subsequent TTI). The UE may then consider an overbooking procedure for the two TTIs. For example, the individual PDCCH candidates associated with the second TTI may be counted together with the combined PDCCH candidate, and the UE may determine whether to monitor or drop all of the second set of PDCCH candidates and the third set of PDCCH candidates.

[0036]

[0043] If the monitoring opportunities for the linked SS sets lie within a single TTI, the UE may count the combined repetitions (e.g., the third set of PDCCH candidates) against the BD limit for that TTI (e.g., the UE may count the first set of PDCCH candidates twice toward the BD limit for the TTI, or the second set of PDCCH candidates twice toward the TTI limit, or both). In such a case, the UE may evaluate the overbooking condition for each set of PDCCH candidates separately or in various combinations. For example, the UE may evaluate (e.g., decide to monitor or abandon) the first set of PDCCH candidates, the second set of PDCCH candidates, and the third set of PDCCH candidates all together. Or, the UE may evaluate (e.g., decide to monitor or abandon) each set of PDCCH candidates separately. Alternatively, the UE may separately evaluate (e.g., determine whether to monitor or abandon) one set of PDCCH candidates (e.g., a first set of PDCCH candidates) and may jointly evaluate a second and third set of PDCCH candidates (e.g., a combination of the second set of PDCCH candidates and the first and second sets of PDCCH candidates).

[0037]

[0044] The techniques described herein may be implemented to realize one or more advantages. For example, the techniques described may result in improved system efficiency, more efficient utilization of available resources, more efficient use of UE computational resources, etc.

[0038]

[0045] Aspects of the present disclosure are first described in the context of a wireless communication system. Aspects of the present disclosure are further illustrated by and described with reference to a wireless communication system and a monitoring scheme. Aspects of the present disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow charts relating to BD restrictions and overbooking for PDCCH repetitions.

[0039]

[0046] 1 illustrates an example of a wireless communication system 100 supporting BD restrictions and overbooking on PDCCH repetitions according to aspects of the disclosure. The 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, the wireless communication system 100 may be a Long Term Evolution (LTE) network, a LTE-Advanced (LTE-A) network, a LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0040]

[0047] The base stations 105 may be distributed throughout a geographic area to form the wireless communication system 100 and may be devices of different forms or with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals according to one or more radio access technologies.

[0041]

[0048] The UEs 115 may be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be fixed or mobile, or both, at different times. The UEs 115 may be devices of different forms or with different capabilities. Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), as shown in FIG. 1.

[0042]

[0049] The base stations 105 may communicate with the core network 130, or with each other, or both. For example, the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface). The base stations 105 may communicate with each other over the backhaul links 120 (e.g., via an X2, Xn, or other interface), either directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0043]

[0050] One or more of the base stations 105 described herein may include or be referred to as a base transceiver station, radio base station, access point, radio transceiver, Node B, eNode B (eNB), next generation Node B or giganode B (any of which may be referred to as gNB), Home Node B, Home eNode B, or other suitable terminology by those skilled in the art.

[0044]

[0051] The UE 115 may include or be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where a "device" may be referred to as a unit, a station, a terminal, or a client, among other examples. The UE 115 may also be a mobile phone, a personal digital assistant (PDA), a multimedia / entertainment device (e.g., a radio, an MP3 player, or a video device), a camera, a game console, a navigation / positioning device (e.g., a GNSS (Global Navigation Satellite System) device based on GPS (Global Positioning System), Beidou, GLONASS, or Galileo, or a ground-based device), a tablet computer, a laptop computer, a personal computer, a netbook, a smartbook, a personal computer, a smart device, a wearable device (e.g., a smart watch, a smart clothing, a smart The UE 115 may include or be referred to as a personal electronic device such as glasses, virtual reality goggles, smart wristbands, smart jewelry (e.g., smart rings, smart bracelets), drones, robots / robotic devices, vehicles, vehicular devices, meters (e.g., parking meters, electric meters, gas meters, water meters), monitors, gas pumps, appliances (e.g., kitchen appliances, washers, dryers), location tags, medical / healthcare devices, implants, sensors / actuators, displays, or any other suitable device configured to communicate via wireless or wired media. In some examples, the UE 115 may include or 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, among other examples, which may be implemented within various objects such as appliances, or vehicles, meters, among other examples.

[0045]

[0052] The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may at times act as relays, as well as base stations 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.

[0046]

[0053] The UE 115 and the base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure to support the communication link 125. For example, a carrier used for the 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 that coordinates operation for the carrier, user data, or other signaling. The wireless communication system 100 can support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0047]

[0054] In some examples (e.g., in a carrier aggregation configuration), a carrier may have acquisition or control signaling that coordinates the operation of other carriers. A 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 arranged according to a channel raster for discovery by the UE 115. A carrier may operate in a standalone mode where initial acquisition and connection may be made by the UE 115 over the carrier, or a carrier may operate in a non-standalone mode where a connection is established using a different carrier (e.g., of the same or different radio access technology).

[0048]

[0055] The communication links 125 shown in the wireless communication system 100 may include uplink transmissions from the UE 115 to the base station 105 or downlink transmissions from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry downlink and uplink communications (e.g., in TDD mode).

[0049]

[0056] A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 Megahertz (MHz)) for a carrier of a particular radio access technology. The devices (e.g., the base station 105, the UE 115, or both) of the wireless communication system 100 may have a hardware configuration that supports communication on a particular carrier bandwidth or may be configurable to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a sub-band, BWP) or all of the carrier bandwidth.

[0050]

[0057] A signal waveform transmitted on a carrier may be composed of multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may be composed of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Thus, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate for the UE 115 may be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time 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 for communication with the UE 115.

[0051]

[0058] One or more numerologies for a carrier may be supported, where the numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communication for the UE 115 may be limited to one or more active BWPs.

[0052]

[0059] The time interval for the base station 105 or the UE 115 may be, for example, T s =1 / (Δf max N f ) seconds, where Δf maxLet denote the maximum supported subcarrier spacing, and N f may represent the maximum discrete Fourier transform (DFT) size supported. The communication resource time intervals may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., in the range of 0 to 1023).

[0053]

[0060] Each frame may include multiple consecutively numbered subframes or slots, and each subframe or 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 several slots. Alternatively, each frame may include a variable number of slots, and the number of slots may depend on the subcarrier spacing. Each slot may include several symbol periods (e.g., depending on the length of a cyclic prefix prepended to each symbol period). In some wireless communications systems 100, a slot may be further divided into multiple minislots containing one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f A symbol period may contain multiple sampling periods (number of symbol periods). The duration of a symbol period may depend on the subcarrier spacing or the frequency operating band.

[0054]

[0061] A subframe, slot, minislot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a TTI. In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., within a burst of shortened TTI (sTTI)).

[0055]

[0062] The physical channels may be multiplexed on the carriers according to various techniques. The physical control channels and the physical data channels may be multiplexed on the downlink carriers, for example, using one or more of a time division multiplexing (TDM), a frequency division multiplexing (FDM), or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for the physical control channel may be defined by a number of symbol periods and may extend across the system bandwidth of the carrier or a subset of the system bandwidth. One or more control regions (e.g., a CORESET) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more SS sets, and each SS set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level for the control channel candidates may refer to a number of control channel resources (e.g., control channel elements (CCEs)) associated with the coding information for a control information format having a given payload size. The SS sets may include a common SS set configured to send control information to multiple UEs 115 and a UE-specific SS set for sending control information to a particular UE 115 .

[0056]

[0063] Each base station 105 can provide communication coverage via one or more cells, e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof. The term "cell" can refer to a logical communication entity used to communicate with the base station 105 (e.g., on a carrier) and may be associated with an identifier (e.g., physical cell identifier (PCID), virtual cell identifier (VCID), etc.) to distinguish neighboring cells. In some examples, a cell can also refer to a geographic coverage area 110 or a portion (e.g., a sector) of the geographic coverage area 110 in which the logical communication entity operates. Such a cell may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area depending on various factors such as the capabilities of the base station 105. For example, a cell may be or include a building, a subset of a building, or an outside space between or overlapping with the geographic coverage area 110, among other examples.

[0057]

[0064] A macro cell generally covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs 115 subscribing to the service of a network provider supporting the macro cell. Small cells may be associated with lower power base stations 105 compared to macro cells, and small cells may operate within the same or different (e.g., licensed, unlicensed) frequency bands as the macro cell. Small cells may provide unrestricted access to UEs 115 subscribing to the service of a network provider, or may provide restricted access to UEs 115 that have an association with the small cell (e.g., UEs 115 in a Closed Subscriber Group (CSG), UEs 115 associated with a user in a home or office). A base station 105 may support one or more cells and may also support communication on one or more cells using one or more component carriers.

[0058]

[0065] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, Narrowband IoT (NB-IoT), enhanced Mobile Broadband (eMBB)) that can provide access to different types of devices.

[0059]

[0066] In some examples, the base stations 105 are mobile and thus may provide communication coverage to moving geographic coverage areas 110. In some examples, the 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, the overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include a heterogeneous network in which different types of base stations 105 provide coverage to various geographic coverage areas 110, e.g., using the same or different radio access technologies.

[0060]

[0067] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing and transmissions from different base stations 105 may not be aligned in time, in some examples. The techniques described herein may be used for either synchronous or asynchronous operation.

[0061]

[0068] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technologies that allow devices to communicate with each other or with the base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that utilizes the information or presents the information to a human interacting with the application program. Some UEs 115 may be designed to collect information or enable automated 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, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business billing. In an aspect, the techniques disclosed herein may be applicable to MTC or IoT UEs. MTC or IoT UE may include MTC / enhanced MTC (eMTC, also called CAT-M, Cat M1) UE, NB-IoT UE (also called CAT NB1), as well as other types of UE. eMTC and NB-IoT may refer to future technologies that may evolve from or be based on these technologies. For example, eMTC may include FeMTC (further eMTC), eFeMTC (further enhanced eMTC), and mMTC (Major MTC), and NB-IoT may include eNB-IoT (enhanced NB-IoT) and FeNB-IoT (further enhanced NB-IoT).

[0062]

[0069] Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception, rather than transmission and reception simultaneously). In some examples, the half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for the UE 115 include entering a power saving deep sleep mode when not engaged in active communication, operating on a limited bandwidth (e.g., pursuant to narrowband communication), or a combination of these techniques. For example, some UEs 115 may be configured for operation using a narrowband protocol type associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of the carrier, or outside of the carrier.

[0063]

[0070] The wireless communication system 100 may be configured to support ultra-reliable or low-latency communications, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communications (URLLC) or mission-critical communications. The UE 115 may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission-critical functions). Ultra-reliable communications may include private or group communications and may 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 may include service prioritization, and the mission-critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency may be used interchangeably herein.

[0064]

[0071] In some examples, the UE 115 may also be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105 or may not otherwise be able to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to every other UE 115 in the group. In some examples, the base station 105 facilitates scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of the base station 105.

[0065]

[0072] 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, the vehicles may communicate using vehicle-to-anything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination thereof. The vehicles may signal information regarding traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, the vehicles in the V2X system may communicate with a roadside infrastructure, such as roadside units, or a network via one or more network nodes (e.g., base stations 105) using vehicle-to-network (V2N) communication, or both.

[0066]

[0073] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) that may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) that manages access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) that routes packets or interconnection to external networks. The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the base stations 105 associated with the core network 130. User IP packets may be forwarded through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0067]

[0074] Some of the network devices, such as the base station 105, may include subcomponents, such as an access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with the UE 115 through one or more other access network transmitting entities 145, which may be referred to as a radio head, a smart radio head, or a transmit / receive point (TRP). Each access network transmitting entity 145 may include one or more antenna panels. In some configurations, various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or integrated into a single network device (e.g., the base station 105).

[0068]

[0075] The wireless communication system 100 may operate using one or more frequency bands typically ranging from 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the 300 MHz to 3 GHz region is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter in length. Although UHF waves may be blocked or redirected by buildings and environmental features, the waves can penetrate structures well enough for a macrocell to serve UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0069]

[0076] The wireless communication system 100 may also operate in the Super High Frequency (SHF) region, using a frequency band from 3 GHz to 30 GHz, also known as the centimeter band, or the Extremely High Frequency (EHF) region of the spectrum, also known as the millimeter band (e.g., from 30 GHz to 300 GHz). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of the respective devices may be smaller and more closely spaced than the UHF antennas. In some examples, this may facilitate the use of antenna arrays within the devices. However, propagation of EHF transmissions may experience greater atmospheric attenuation and be shorter range than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of bands across these frequency regions may vary by country or regulatory body.

[0070]

[0077] The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band, such as the 5 GHz Industrial, Scientific, and Medical (ISM) band. When operating in an unlicensed radio frequency spectrum band, devices such as the base station 105 and the UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation in an unlicensed band may be based on a carrier aggregation configuration with a component carrier operating in a licensed band (e.g., LAA). Operation in an unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0071]

[0078] The base station 105 or UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located in one or more antenna arrays or antenna panels that may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located in an antenna assembly such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located in diverse geographic locations. The base station 105 may have an antenna array with several rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panels may support radio frequency beamforming for signals transmitted through the antenna ports.

[0072]

[0079] A base station 105 or a UE 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The multiple signals may be transmitted by a transmitting device, for example, via different antennas or different combinations of antennas. Similarly, the multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). The different spatial layers may be associated with different antenna ports used for channel measurements and reporting. MIMO techniques include single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0073]

[0080] Beamforming, sometimes referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used in a transmitting or receiving device (e.g., base station 105, UE 115) to shape or steer an antenna beam (e.g., transmit beam, receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals communicated through antenna elements of an antenna array such that some signals propagating in a particular orientation relative to the antenna array encounter constructive interference and other signals encounter destructive interference. Adjustment of signals communicated through antenna elements may include the transmitting or receiving device applying an amplitude offset, a phase offset, or both to signals conveyed through antenna elements associated with the device. The adjustment associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., relative to the antenna array of the transmitting or receiving device or to some other orientation).

[0074]

[0081] The base station 105 or the UE 115 may use beam sweeping techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform a beamforming operation for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by the base station 105 in different directions. For example, the base station 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. The transmission of different beam directions may be used (e.g., by a transmitting device such as the base station 105 or by a receiving device such as the UE 115) to identify beam directions for subsequent transmission or reception by the base station 105.

[0075]

[0082] Some signals, such as data signals associated with a particular receiving device, may be transmitted by the base station 105 in a single beam direction (e.g., a direction associated with a receiving device, such as the UE 115). In some examples, a beam direction associated with a transmission along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, the UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions and may report to the base station 105 an indication of the signal received by the UE 115 with the highest signal quality or an otherwise acceptable signal quality.

[0076]

[0083] In some examples, transmission by a device (e.g., by the base station 105 or the UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a composite beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may transmit a reference signal (e.g., cell-specific reference signal (CRS), channel state information reference signal (CSI-RS)) that may be precoded or amplicoded. The UE 115 may provide feedback for beam selection, which may 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 have been described with respect to signals transmitted by the base station 105 in one or more directions, the UE 115 may employ similar techniques to transmit a signal multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by the UE 115) or to transmit a signal in a single direction (e.g., to transmit data to a receiving device).

[0077]

[0084] A receiving device (e.g., UE 115) may attempt multiple receiving configurations (e.g., directional listening) when receiving various signals, such as synchronization signals, reference signals, beam selection signals, or other control signals, from the base station 105. For example, the receiving device may attempt multiple receiving directions by receiving via different antenna subarrays, by processing signals received according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing signals received according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different receiving configurations or receiving directions. In some examples, the receiving device may use a single receiving configuration to receive along a single beam direction (e.g., when receiving a data signal). The single receive configuration may be aligned to a beam direction determined based on listening along different receive 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 along multiple beam directions).

[0078]

[0085] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. The Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate on logical channels. The Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may 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 may provide establishment, configuration, and maintenance of an RRC connection between the UE 115 and the base station 105 or core network 130, which supports radio bearers for user plane data. In the physical layer, the transport channels may be mapped to physical channels.

[0079]

[0086] The UE 115 and the base station 105 can support retransmission of data to increase the likelihood that the data is successfully received. Hybrid Automatic Repeat Request (HARQ) feedback is one technique for increasing the likelihood that the data is correctly received on the communication link 125. HARQ may include a combination of error detection (e.g., using a Cyclic Redundancy Check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Repeat Request (ARQ)). HARQ can improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions). In some examples, the device can support same-slot HARQ feedback, where the device can provide HARQ feedback in a particular slot for data received in a previous symbol in that slot. In other cases, the device can provide HARQ feedback in a subsequent slot or according to some other time interval.

[0080]

[0087] In general, the UE 115 may receive a configuration message from the base station indicating that each PDCCH candidate of a first SS set in a first TTI (e.g., slot or span) is linked to a corresponding PDCCH candidate of a second SS set in a second TTI. The UE 115 may be limited in terms of the total number of PDCCHs that it is allowed to monitor in a given TTI (e.g., BD limit). The UE 115 may count PDCCH candidates in the first SS set toward the BD limit of the first TTI and may count PDCCH candidates in the second SS toward the BD limit of the second TTI. The UE 115 may count a combination of PDCCH candidates in the first TTI and PDCCH candidates in the second TTI toward the BD limit of only the second TTI, or may count a combination of PDCCH candidates in the first and second TTIs toward both the BD limit of the first TTI and the BD limit of the second TTI. Furthermore, the UE 115 may consider combinations of PDCCH candidates together or separately from other PDCCH candidates within a TTI for the purpose of the overbooking procedure.

[0081]

[0088] In some examples, the techniques described herein may also describe how a UE may be configured with a first SS set and a second SS set in the same TTI. In such examples, the UE 115 may consider a first set of PDCCH candidates for the first SS set, a second set of PDCCH candidates for the second SS set, and a combination of the first set of PDCCH candidates and the second set of PDCCH candidates, all together, all separately, or any combination thereof (e.g., the combination of the first set of PDCCH candidates may be grouped with only one of the second set of PDCCH candidates and the first set of PDCCH candidates for an overbooking procedure).

[0082]

[0089] 2 illustrates an example of a wireless communication system 200 supporting BD restrictions and overbooking on PDCCH repetitions in accordance with aspects of the disclosure. The wireless system 200 may include a base station 205 and a UE 215, which may be examples of corresponding devices described with reference to FIG. 1. In some aspects, the base station 205 may be a serving base station or cell for the UE 215 and may support repetition-based PDCCH candidates configured for the UE 215.

[0083]

[0090] In some aspects, the UE 215 may be configured with one or more CORESETs within the BWP of the serving cell. For example, the UE 215 may be configured with three, five, or some other number of CORESETs within the BWP configured by the base station 205. In general, each CORESET may be associated with one active transmission configuration indicator (TCI) state. For example, as part of the configuration of a CORESET for the UE 215 by the base station 205, the number of resource blocks (RBs) of the CORESET in the frequency domain and the number of symbols (e.g., one, two, or three OFDM symbols) of the CORESET in the time domain may be RRC configured for the UE 215.

[0084]

[0091] In some examples, the wireless communication system 200 may support PDCCH monitoring in one or more search space (SS) sets. In some aspects, each SS set may be associated with one CORESET. For example, there may be up to 10 SS sets in the BWP of a component carrier (CC). As part of the SS set configuration, RRC signaling may be used to configure the associated CORESET, the periodicity and offset of monitored slots and symbols to be monitored within the slots in the time domain, or the DCI format to be monitored, the number of PDCCH candidates for a given aggregation level (AL). PDCCH candidates may be defined as part of the SS set configuration. For example, PDCCH candidates with a given AL in a given PDCCH candidate index may be defined in a given SS set. DCI may be conveyed within one PDCCH candidate. For example, base station 205 may configure 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 comprised of one or more PDCCH candidates (e.g., PDCCH candidate 225 included in monitoring opportunity 210, PDCCH candidate 230 included in monitoring opportunity 220, etc.).

[0085]

[0092] The UE 215 may monitor PDCCH candidates in various SS sets to receive one or more DCI messages. The UE 215 may determine that the PDCCH candidates pass a cyclic redundancy check (CRC) check (e.g., the UE 215 may attempt to blind decode each PDCCH candidate in a BD attempt where the PDCCH candidate passes a CRC check corresponding to a successfully decoded DCI).

[0086]

[0093] In some wireless communication systems, there may be a limit (e.g., a maximum number) of monitored PDCCH candidates that the UE 215 may attempt to blind decode (e.g., a blind decoding limit, which may also be referred to as a maximum blind decode count, a BD limit, a limit of monitored PDCCH candidates, etc.). The blind decoding limit (BD limit) may be based on a given TTI (e.g., a slot, a span, or other duration in the time domain). For example, for four or less configured downlink serving cells, a separate BD limit may be supported per downlink serving cell according to the base unit of the limit for one CC. The BD limit for four or less downlink serving cells may be fixed and may depend on the subcarrier spacing (SCS) of slots per serving cell. For example, the maximum number of monitored PDCCH candidates per slot or downlink BWP with different SCS configurations for a single serving cell may range from 20 to 44 depending on the SCS configuration. In some examples, the maximum number of non-overlapping CCEs per TTI in a downlink BWP with different SCS configurations for a single serving cell may range from 32 to 56 depending on the SCS configuration and other factors. For more than four downlink serving cells, the UE 215 may indicate its total capacity to the base station 205 (e.g., via a PDCCH-BlindDetectionCA parameter value that is an integer equal to or greater than four). A total limit may 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. The BD limit may be a per scheduled cell limit and may be defined as the minimum of the total limit and the base unit of the indicated limit with reference to the SCS (e.g., 20 to 44, or 32 to 56, etc.).

[0087]

[0094] Thus, within any given TTI, the UE 215 may be configured with one or more PDCCH candidates. The PDCCH candidates may correspond to different SSSs. The UE may count some or all of the PDCCH candidates towards the BD limit.

[0088]

[0095] Some wireless communication systems may allow PDCCH transmissions with two active TCI states. Variations of this approach may include one CORESET with two active TCI states, one SS set associated with two different CORESETs, or two SS sets associated with corresponding CORESETs. In a situation where one CORESET is associated with two active TCI states, base station 205 may configure one PDCCH candidate (within a given SS set) to be associated with both TCI states of the CORESET. In another approach where one CORESET may be associated with two active TCI states, base station 205 may configure two sets of PDCCH candidates (within a given SS set) to be associated with two active TCI states of the CORESET, respectively. In yet another approach where one CORESET may be associated with two active TCI states, base station 205 may configure two sets of PDCCH candidates to be associated with two corresponding SS sets, where both SS sets are associated with the CORESET and each SS set is associated with only one TCI state of the CORESET. In general, the set of PDCCH candidates may include a single or multiple PDCCH candidates, where the PDCCH candidates in the set correspond to repetitions or occasions on which DCI may be indicated to the UE 215.

[0089]

[0096] A set of PDCCH candidates in various SS sets may provide a repetition-based PDCCH candidate, with each PDCCH candidate linked to the other PDCCH candidates. For example, a PDCCH candidate 225 in a first SS set may be located in a monitoring opportunity 210-a and may be linked to a PDCCH candidate 230 located in a monitoring opportunity 220-a in a second SS set. The PDCCH candidate 225 and the PDCCH candidate 230 may be located in the same slot or in different slots. In some examples, the base station 205 may transmit a DCI message using PDCCH repetition on the two linked PDCCH candidates. For example, the base station 205 may transmit a first repetition of the DCI message on the PDCCH candidate 225 and a second repetition of the DCI message on the PDCCH candidate 230. In some examples, the UE 215 may perform a soft combining procedure on the PDCCH candidate 225 and the PDCCH candidate 230 resulting in a soft combined PDCCH candidate 235. The UE may further consider the soft combining PDCCH candidates 235 as PDCCH candidates to be monitored.

[0090]

[0097] In some examples, two or more PDCCH candidates may be explicitly linked together (e.g., the base station 205 may configure a link to the UE 215 before the UE 215 attempts to perform BD of the PDCCH candidates). In some examples, two or more PDCCH candidates may not be explicitly linked together, and the UE 215 may identify or otherwise determine the link before or after decoding. However, some wireless communication systems do not provide a mechanism or other indication of how one or more PDCCH candidates are counted when monitoring is applied to the BD limit configured for the UE 215. For example, the UE 215 may count the number of PDCCH candidates 225 toward the BD limit of the slot in which the PDCCH candidate 225 is located and may count the number of PDCCH candidates 230 toward the BD limit of the slot in which the PDCCH candidate 230 is located. However, the UE 215 may also need to determine whether and how to count a set of soft-combined PDCCH candidates 235 toward the BD limit. For example, if the UE 215 monitors the PDCCH candidate 225 and the PDCCH candidate 230 during different TTIs, the UE 215 can determine whether to count the soft-combined PDCCH candidate 235 toward the BD limit of the first slot, or the second slot, or both.

[0091]

[0098] Accordingly, the wireless communication system 200 may support PDCCH repetitions, where each PDCCH repetition corresponds to a PDCCH candidate, and two or more PDCCH candidates may be linked together as possible repetitions of the same DCI. Aspects of the described techniques provide different approaches for how to count the number of PDCCH candidates "to monitor" toward the UE's BD limitation as applied.

[0092]

[0099] In some examples, the wireless communication system 200 may support an overbooking procedure. If overbooking is supported, the base station 205 may be permitted to configure the UE 215 with PDCCH candidates that exceed the BD limit (e.g., for BD and CCE) for the primary scheduling cell. However, the UE 215 may not be able to monitor additional PDCCH candidates that exceed the BD limit. In such examples, the UE 215 may decide to monitor or abandon (ignore or refrain from monitoring) one or more configured PDCCH candidates. For example, in a first step of the overbooking procedure, the UE 215 may exclude blind decodes or CCEs corresponding to common SSs from the limit (e.g., PDCCH candidates from common SSs may have a higher priority than PDCCH candidates from other SSs and may not be excluded or abandoned). Additionally or alternatively, the UE 215 may monitor (e.g., perform blind decodes on) the remaining SSs (e.g., UE-specific SSs (USSs)) starting with the lowest index value and continue to monitor the USSs with increasing index values. After monitoring (e.g., performing BD procedures) for the PDCCH candidates of the USS, the UE 215 may determine whether the remaining number of BD procedures within the BD limit exceeds the number of PDCCH candidates configured for the next USS. If so, the UE 215 may blind decode the PDCCH candidates of that USS. The UE 215 may continue this process until the remaining number of allowed blind decodes is less than the number of PDCCH candidates in the next USS. At that point, the UE 215 may stop monitoring (e.g., may discard all remaining configured PDCCH candidates). This process may be referred to as an overbooking procedure or determining an overbooking condition. In some examples, overbooking is supported or allowed only in a primary cell (Pcell) and not for a secondary cell (Scell).Overbooking may be viewed and performed with reference to the per-schedule cell limit of the primary cell.

[0093]

[0100] In some examples, the wireless communication system 200 may support span-based PDCCH monitoring. A span may refer to a TTI defined in units of (X, Y) symbols, where X may refer to the minimum time interval (e.g., in number of symbols) between the first symbols of two consecutive spans, and Y may refer to the number of symbols in each span. Each PDCCH monitoring opportunity may be located within a single span. In some examples, a BD limit may be defined per span. In some examples, if a primary cell is configured with span-based PDCCH monitoring, the overbooking procedures described herein may be supported for the first span of each slot (e.g., not supported for subsequent spans). In other spans, the UE 215 may not expect to monitor a number of PDCCH candidates that exceeds the BD limit (e.g., the UE 215 may not expect the number of PDCCH candidates per span on the primary cell and the corresponding number of non-overlapping CCEs to be greater than the corresponding number that the UE can monitor the primary cell per span). The TTI described herein may refer to a slot (eg, in the case of slot-based PDCCH monitoring) or a span (eg, in the case of span-based PDCCH monitoring).

[0094]

[0101] As described above, the UE 215 may support PDCCH repetition, and two PDCCH candidates may be linked together for possible repetitions of the same DCI. Two PDCCH candidates (e.g., PDCCH candidate 225 and PDCCH candidate 230) may be located in different SS sets (e.g., associated with corresponding CORESETs) and may be linked together for PDCCH repetition. In some examples, for purposes of counting PDCCH candidates toward the BD limit, the UE 215 may consider the soft-combined PDCCH candidate 235 as a third set of PDCCH candidates (e.g., when the UE 215 decodes each PDCCH candidate 225, each PDCCH candidate 230, and each soft-combined PDCCH candidate 235 individually). Since the BD limit may be defined per TTI, if the PDCCH candidate 225 is in a first TTI and the PDCCH candidate 230 is in a different slot, the UE 215 may need to decide to count the soft-combined PDCCH candidate 235 towards the BD limit of one of the two TTIs. Since the overbooking procedure may be based on the SS set index (e.g., starting with the smallest index value), the UE 215 can decide how to apply the overbooking procedure to the soft-combined PDCCH candidate 235 (e.g., whether to consider the soft-combined PDCCH candidate 235 together with other PDCCH candidates, separately, etc.).

[0095]

[0102] As described above, the UE 215 may count the soft-combined PDCCH candidates 235 towards the BD limit of one or more slots. Additionally, the UE 215 may determine whether or how to apply the soft-combined PDCCH candidates 235 to an overbooking procedure for a slot if the overbooking procedure is supported for that slot. Techniques for counting the soft-combined PDCCH candidates 235 towards the BD limit of one or more TTIs when the monitoring occasions are located in different TTIs and performing an overbooking procedure based on such counting are described with reference to FIG. 3. Techniques for performing an overbooking procedure when PDCCH candidates of different SS sets are located in the same TTI are described with reference to FIG. 4.

[0096]

[0103] 3 illustrates an example of a monitoring scheme 300 supporting BD restrictions and overbooking on PDCCH repetitions in accordance with aspects of the disclosure. In some examples, the monitoring scheme 300 may be performed by or include aspects of the wireless communication system 100 or the wireless communication system 200. For example, a UE and a base station may communicate using the monitoring scheme 300, where the UE and the base station may be examples of corresponding devices described with reference to FIGS. 1 and 2.

[0097]

[0104] In some examples, a UE may be configured with multiple SS sets, as described with reference to FIG. 2. Each SS set may include one or more monitoring opportunities 310, and each monitoring opportunity may include one or more PDCCH candidates. In some examples, the SS sets may be linked for PDCCH repetition. In such examples, PDCCH candidates in different monitoring opportunities 310 may be linked together. For example, the monitoring opportunity 310-a may be located in a first TTI 305-a (e.g., a slot, or a span, etc.). The monitoring opportunity 310-a may be associated with the first SS set. The monitoring opportunity 310-b may be located in a second TTI 305-b (e.g., a second slot, a second span, etc.). The monitoring opportunity 310-b may be associated with the second SS set. The PDCCH candidates 320 in the monitoring opportunity 310-a may be linked to respective PDCCH candidates 325 in the monitoring opportunity 310-b.

[0098]

[0105] The UE may be configured to count linked PDCCH candidates for the PDCCH repetitions toward the BD limit as three separate monitored sets of PDCCH candidates, as described in more detail with reference to FIG. 2. For example, the base station may send a configuration message to the UE indicating that an individual PDCCH candidate 320 in a first SS set of TTI 305-a is associated or linked to a corresponding PDCCH candidate 325 in a second SS set of a second TTI 305-b. The UE may be configured to count the PDCCH candidate 320-a toward the BD limit for the TTI 305-a and count the PDCCH candidate 325-a (which may be linked to the PDCCH candidate 320-a) toward the BD limit for the TTI 305-b. However, the UE may also be configured to count a third monitored PDCCH candidate (e.g., a soft-combined PDCCH candidate) toward the BD limit. That is, the UE may soft-combine PDCCH candidate 320-a and PDCCH candidate 325-a and count the soft-combined PDCCH candidate toward a BD limit (e.g., for either TTI 305-a, TTI 305-b, or both). In some examples, the base station may send an instruction to count the combination of PDCCH candidates as a third set of PDCCH candidates toward one or more BD limits.Thus, in some examples, the UE may count a first set of PDCCH candidates 320 (e.g., PDCCH candidate 320-a, PDCCH candidate 320-b, or PDCCH candidate 320-c) toward the BD limit for TTI 305-a, a second set of PDCCH candidates 325 (e.g., PDCCH candidate 325-a, PDCCH candidate 325-b, or PDCCH candidate 325-c) toward the BD limit for TTI 305-b, and a third set of PDCCH candidates (e.g., PDCCH candidate 320-c, PDCCH candidate 320-d, PDCCH candidate 320-e, PDCCH candidate 320-f, PDCCH candidate 320-g, PDCCH candidate 320-h, PDCCH candidate 320-i, PDCCH candidate 320-j, PDCCH candidate 320-k, PDCCH candidate 320-k, PDCCH candidate 320-k, PDCCH candidate 320-p ... A combination of PDCCH candidates 325 may be counted toward the BD limit of TTI 305-a, TTI 305-b, or both (e.g., the UE may count a first set of PDCCH candidates 320 twice toward the BD limit of TTI 305-a or the BD limit of TTI 305-b, or both, or may count a second set of PDCCH candidates 325 twice toward the BD limit of TTI 305-b or the BD limit of TTI 305-a, or both, or any combination thereof).

[0099]

[0106] In some examples, the UE may count the third set of PDCCH candidates toward the BD limit for both TTI 305-a and TTI 305-b. In such examples, the UE may count the total number of PDCCH candidates 320 toward the BD limit for TTI 305-a and may further count the total number of the third set of PDCCH candidates (e.g., combinations of the PDCCH candidates 320 with linked PDCCH candidates 325) toward the BD limit for TTI 305-a. Similarly, the UE may count the total number of PDCCH candidates 325 toward the BD limit for TTI 305-b and may further count the total number of the third set of PDCCH candidates (e.g., combinations of the PDCCH candidates 320 with linked PDCCH candidates 325) toward the BD limit for TTI 305-b. For example, if the monitoring opportunity 310-a of the first SS set includes 10 PDCCH candidates 320, the UE may count 20 PDCCH candidates toward the BD limit for TTI 305-a (e.g., the per-slot or per-span BD limit for TTI 305-a) and similarly, may count 20 PDCCH candidates toward the BD limit for TTI 305-b (e.g., the per-slot or per-span BD limit for TTI 305-b). For example, assuming an SCS of 30 KHz and a BD limit per TTI of 36, neither the monitoring opportunity 310-a nor the monitoring opportunity 310-b may exceed their respective BD limits.

[0100]

[0107] In some examples, the UE may count the third set of PDCCH candidates toward the BD limitation of only one TTI 305 (e.g., based on the timing of the two TTIs, index values ​​for the respective SS sets, etc.). For example, the UE may only count the third set of PDCCH candidates toward the BD limitation of a later TTI 305 (e.g., TTI 305-b). In such examples, the UE may count the total number of PDCCH candidates 320 toward the BD limitation of TTI 305-a. The UE may count the total number of PDCCH candidates 325 toward the BD limitation of TTI 305-b, and may further count the total number of the third set of PDCCH candidates (e.g., combinations of PDCCH candidates 320 with linked PDCCH candidates 325) toward the BD limitation of TTI 305-b. For example, if the monitoring opportunity 310-a of the first SS set includes 10 PDCCH candidates 320, the UE may count the 10 PDCCH candidates 320 toward the BD limit for the TTI 305-a (e.g., the per-slot or per-span BD limit for the TTI 305-a) and may count the 20 PDCCH candidates toward the BD limit for the TTI 305-b (e.g., the per-slot or per-span BD limit for the TTI 305-b). For example, assuming an SCS of 30 KHz and a BD limit per TTI of 36, neither the monitoring opportunity 310-a nor the monitoring opportunity 310-b may exceed their respective BD limits.

[0101]

[0108] In both examples described above, the UE may count or otherwise determine the total number of PDCCH candidates associated with the second SS set (e.g., within the TTI 305-b) to count toward the BD limit for the TTI 305-b by counting each PDCCH candidate 325 in the second TTI 305-b and counting each combination of individual PDCCH candidates 320 with a corresponding PDCCH candidate 325. The UE may compare the total number of PDCCH candidates (e.g., combinations of PDCCH candidates 325 and PDCCH candidates) to the BD limit, and may also compare any number of other PDCCH candidates associated with the second TTI 305-b (e.g., other PDCCH candidates in USSs, CSSs, other SS sets, etc. located within the TTI 305-b) to the BD limit. In some examples (e.g., the UE counts the third set of PDCCH candidates toward the BD limit for each of both TTIs 305), the UE may further determine the total number of PDCCH candidates associated with the first SS set to count toward the BD limit for the first TTI 305-a by counting each PDCCH candidate 320 and each combination of the PDCCH candidate 320 with its associated PDCCH candidate 325. The UE may compare the total number of counted PDCCH candidates, and any other PDCCH candidates associated with the first TTI 305-a, to the BD limit for the TTI 305-a.

[0102]

[0109] In some examples, the UE may also determine that an overbooking condition exists for a TTI 305. For example, as described in further detail with reference to Figure 2, the base station may configure the UE with more PDCCH candidates than permitted to be monitored under the BD limit for a given TTI 305. In such examples, the UE may evaluate an overbooking condition for a given TTI 305 based on the number of PDCCH candidates in that TTI 305 and may also consider the number of combinations of PDCCH candidates counted toward the BD limit for that TTI 305.

[0103]

[0110] In the case described herein where the UE counts the combination of PDCCH candidates 320 and linked PDCCH candidates 325 towards the BD limit of TTI 305-b, the UE can determine whether the overbooking condition is met by evaluating the total number of PDCCH candidates counted together towards the BD limit. In such an example, as part of the overbooking procedure described with reference to FIG. 2, the UE can determine whether the remaining available number of PDCCH candidates counted towards the BD limit exceeds the total number of PDCCH candidates (including the PDCCH candidates 325 and the combination of PDCCH candidates). If so, the UE can count the total number of PDCCH candidates towards the BD limit and can monitor all of the total number of PDCCH candidates. If not, the UE can discard all of the total number of PDCCH candidates (e.g., cannot monitor them due to control signaling) and can terminate the overbooking procedure.

[0104]

[0111] In some examples, the UE may determine whether an overbooking condition is met by evaluating the PDCCH candidate 325 separately from the combination of the PDCCH candidate 320 and the PDCCH candidate 325. For example, as part of the overbooking procedure, the UE may determine whether the remaining available number of PDCCH candidates counted toward the BD limit for the TTI 305-b exceeds the number of PDCCH candidates 325. If not, the UE may discard the PDCCH candidate 325 and terminate the overbooking procedure (e.g., no more PDCCH candidates may be counted toward the BD limit for the TTI 305-b). If not, the UE may count the number of PDCCH candidates 325 toward the BD limit and then re-evaluate whether the updated remaining number of PDCCH candidates counted toward the BD limit for the TTI 305-b exceeds the number of the combination of the PDCCH candidate 320 and the PDCCH candidate 325. If so, the UE may count the combination toward the BD limit. If not, the UE may discard the combination of PDCCH candidates and may terminate the overbooking procedure. In some examples, the UE may consider the combination prior to considering the PDCCH candidates 325 (e.g., based on an index value, etc.).

[0105]

[0112] As described herein, if the UE counts only the PDCCH candidate combinations towards the BD limit of the latter TTI 305-b, the UE may consider the PDCCH candidate combinations with respect to the overbooking conditions of the TTI 305-b (e.g., together with or separately from the individual PDCCH candidates 325 of the TTI 305-b). If the UE counts the PDCCH candidate combinations towards the BD limit of both the TTI 305-a and the TTI 305-b, the UE may consider the PDCCH candidate combinations with respect to the overbooking conditions of the TTI 305-a and the TTI 305-b (e.g., together with or separately from the individual PDCCH candidates 320 and 325 of the TTI 305-a and the TTI 305-b, respectively).

[0106]

[0113] The techniques described herein may be applied to slot-based PDCCH repetition and overbooking procedures or span-based PDCCH repetition and overbooking procedures, where the TTI 305 may be an example of a slot, span, or other time duration.

[0107]

[0114] In some examples, the monitoring opportunities may be located within the same TTI, as described in more detail with reference to FIG.

[0108]

[0115] 4 illustrates an example of a monitoring scheme 400 supporting BD restrictions and overbooking on PDCCH repetitions in accordance with aspects of the disclosure. In some examples, the monitoring scheme 400 may be performed by or may be implemented by aspects of the wireless communication system 100 or the wireless communication system 200. For example, a UE and a base station may communicate using the monitoring scheme 400, and the UE and the base station may be examples of corresponding devices described with reference to FIGS. 1 and 2.

[0109]

[0116] In some examples, the base station may configure the UE with one or more SS sets. For example, the base station may transmit a configuration message indicating that individual PDCCH candidates 420 in a monitoring opportunity 410-a of a first SS set, all during the same TTI 405 (e.g., slot or span), are linked to corresponding PDCCH candidates 425 located in a second monitoring opportunity 410-b of a second SS set. In such an example, the UE may determine that an overbooking condition exists (e.g., associated with overbooking of PDCCH candidates in the TTI 405). For example, the base station may configure the UE with more PDCCH candidates than the UE is permitted to monitor under the BD restriction for the TTI 405. The total number of PDCCH candidates in the TTI may include a PDCCH candidate 420 located within a monitoring opportunity 410-a of a first SS set, a PDCCH candidate 425 located within a monitoring opportunity 410-b of a second SS set, one or more PDCCH candidates for a CSS located within a CSS monitoring opportunity 410-c, one or more PDCCH candidates for a USS located within a USS monitoring opportunity 410-d, etc.

[0110]

[0117] In some examples, the UE may be configured for PDCCH repetition across multiple SS sets. For example, the first SS set and the second SS set in the TTI 405 may be linked such that each PDCCH candidate 420 (e.g., 10 PDCCH candidates 420 including PDCCH candidate 420-a, PDCCH candidate 420-b, or PDCCH candidate 420-c) may be linked to a PDCCH candidate 425 (e.g., 10 PDCCH candidates 425 including PDCCH candidate 425-a, PDCCH candidate 425-b, and PDCCH candidate 425-c) having the same index value across the SS sets. The base station may configure the UE to count the two PDCCH candidates linked for repetition as three monitored PDCCH candidates toward the BD limit per TTI for overbooking purposes (e.g., on a Pcell).

[0111]

[0118] In some examples, the UE may determine whether an overbooking condition is met by considering the individual candidates in the two SS sets together with the combined PDCCH candidate (e.g., may count the next set of PDCCH candidates toward the BD limit without exceeding the BD limit, or may discard the PDCCH candidates and terminate the overbooking procedure). In such examples, based on the overbooking procedure, the total number of PDCCH candidates (e.g., including PDCCH candidate 420, PDCCH candidate 425, and a combination of PDCCH candidate 420 and PDCCH candidate 425) is monitored or discarded.

[0112]

[0119] In some examples, the UE can determine whether the overbooking condition is met by considering the combination of PDCCH candidate 420 and PDCCH candidate 425 together with one PDCCH candidate of the two SS sets (e.g., can count the next set of PDCCH candidates toward the BD limit without exceeding the BD limit, or can discard the PDCCH candidate and terminate the overbooking procedure). For example, the UE can evaluate the PDCCH candidate 420 together with the combination of PDCCH candidate 420 and PDCCH candidate 425 and can evaluate the PDCCH candidate 425 separately. In such examples, based on the overbooking procedure, the PDCCH candidate 420 together with the combination of PDCCH candidate 420 and PDCCH candidate 425 may be all discarded or all monitored. Then, separately, the UE can consider the PDCCH candidate 425.

[0113]

[0120] In some examples, the UE may determine which of the two SS sets the combination of PDCCH candidates should be grouped with. For example, the UE may group the combination of PDCCH candidates with PDCCH candidates 420-a of the first SS set based on the timing of the monitoring occasion 410-a. For example, the UE may select an earlier monitoring occasion (e.g., monitoring occasion 410-a) and group the combination of PDCCH candidates with PDCCH candidates 420 of the first SS set. Alternatively, the UE may select a later monitoring occasion (e.g., monitoring occasion 410-b) and group the combination of PDCCH candidates with PDCCH candidates 425 of the second SS set. In some examples, the UE may group the combination of PDCCH candidates with PDCCH candidates 420 of the first SS set based on the index value of the SS set. For example, the UE may group the combination of PDCCH candidates with PDCCH candidates 420 of the first SS set based on the first SS set having a larger (or smaller) index value than the second SS set. In some examples, the UE may group combinations of PDCCH candidates based on an index value of a CORESET associated with the respective SS set. For example, the UE may group combinations of PDCCH candidates 420 and PDCCH candidates of a first SS set based on a first SS set associated with a CORESET having a larger (or smaller) index value than a CORESET associated with a second SS set.

[0114]

[0121] In some examples, the UE can determine whether an overbooking condition is met by considering the combination of PDCCH candidates 420 and PDCCH candidates 425, and the PDCCH candidates 420 and PDCCH candidates 425 separately (e.g., can count the next set of PDCCH candidates toward the BD limit without exceeding the BD limit, or can discard the PDCCH candidates and terminate the overbooking procedure). For example, the UE can evaluate the PDCCH candidates 420 separately for the overbooking condition, evaluate the PDCCH candidates 425 separately for the overbooking condition, and evaluate the combination of the PDCCH candidates 420 and PDCCH candidates 425 separately for the overbooking condition. In such an example, based on the overbooking procedure, the PDCCH candidates 420 may all be abandoned or all be monitored, the PDCCH candidates 425 may all be abandoned or all be monitored, and the combination of the PDCCH candidates 420 and the PDCCH candidates 425 may all be abandoned or all be monitored, independent of one another.

[0115]

[0122] In some examples, the first SS set and the second SS set may be used for PDCCH repetitions within the same TTI 405. Each of the first monitoring opportunity 410-a and the second monitoring opportunity 410-b may include 10 PDCCH candidates, respectively, and each PDCCH candidate 420 may be linked to a PDCCH candidate 425 having the same index value. The CSS monitoring opportunity 410-c may include six PDCCH candidates. The USS monitoring opportunity 410-d (e.g., part of the normal SS set and not used for PDCCH repetitions) may include eight PDCCH candidates. In some examples, assuming a 39 KHz SCS, the BD limit for the TTI 405 may be 36 PDCCH candidates. Thus, to perform the overbooking procedure, the UE may first exclude the six 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 the monitoring opportunity 410-d has a smaller index than the first SS set and the second SS set, the UE may initially monitor the eight individual PDCCH candidates in the monitoring opportunity 410-d, resulting in a remaining BD restriction budget of 22 PDCCH candidates (e.g., 30-8).

[0116]

[0123] In such an example, the UE may then evaluate the overbooking conditions for the first SS set and the second SS set including the combination of PDCCH candidates to the BD limit, as described above. That is, the UE may compare the number of PDCCH candidates 420 to the BD limit, compare the number of PDCCH candidates 425 to the BD limit, and compare the number of combinations of PDCCH candidates to the BD limit, either together, separately, or in subgroups. For example, as described herein, the UE may consider the PDCCH candidates 420, the PDCCH candidates 425, and the 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 may discard (e.g., ignore or refrain from monitoring) all of the PDCCH candidates 420, the PDCCH candidates 425, and the combined PDCCH candidates.

[0117]

[0124] In some examples, as described herein, the UE may consider the PDCCH candidates 420 separately and may consider the PDCCH candidates 425 together with the combined PDCCH candidates. In such examples, the first SS set during the monitoring occasion 410-a has a lower index number than the second SS set, and the UE may consider the PDCCH candidates 420 first. Because the number of PDCCH candidates 420 does not exceed the remaining BD restriction budget (e.g., 22 PDCCH candidates), the UE may monitor the PDCCH candidates 420 and count them toward the BD restriction of the TTI 405, resulting in a remaining BD restriction budget of 12 PDCCH candidates. In such examples, the UE may then consider the PDCCH candidates 425 together with the combination of PDCCH candidates (e.g., 20 PDCCH candidates), which may exceed the remaining BD restriction budget of 12 PDCCH candidates. This may result in the UE discarding the PDCCH candidates 425 and the combination of PDCCH candidates. Thus, in such an example described herein in which the UE compares a first index value associated with a first SS set to a second index value associated with a second SS set (e.g., the second index value associated with the second SS set is greater than the first index value associated with the first SS set), the UE can determine whether the overbooking condition is met by counting each PDCCH candidate 425 twice.

[0118]

[0125] In some examples, as described herein, the UE may consider each of the PDCCH candidates 420, the PDCCH candidates 425, and the combined PDCCH candidates separately for purposes of the overbooking procedure. For example, the UE may determine that the number of PDCCH candidates 420 (e.g., 10) is less than the available remaining BD restricted budget (e.g., 22 PDCCH candidates) and may monitor the PDCCH candidates 420. The UE may then determine that the number of PDCCH candidates 425 (e.g., 10) is less than the updated remaining BD restricted budget (e.g., 12 PDCCH candidates) and may monitor the PDCCH candidates 425. The UE may also determine that the number of combinations of the PDCCH candidates 420 and the PDCCH candidates 425 (e.g., 10) is greater than the updated remaining BD restricted budget (e.g., 2 PDCCH candidates) and may refrain from monitoring the combination of the PDCCH candidates.

[0119]

[0126] 5 illustrates a block diagram 500 of a device 505 supporting BD restrictions and overbooking for PDCCH repetitions according to an aspect of the disclosure. The device 505 may be an example of an aspect of a UE 115 described herein. The device 505 may include a receiver 510, a transmitter 515, and a communications manager 520. The device 505 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0120]

[0127] The receiver 510 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various traffic channels (e.g., control channels, data channels, traffic channels related to BD restrictions and overbooking for PDCCH repetitions). The information may be passed to other components of the device 505. The receiver 510 may utilize a single antenna or a set of multiple antennas.

[0121]

[0128] The transmitter 515 may provide a means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 may transmit information such as packets, user data, control information, or any combination thereof associated with various traffic channels (e.g., control channels, data channels, traffic channels related to BD restrictions and overbooking on PDCCH repetitions). In some examples, the transmitter 515 may be co-located with the receiver 510 within a transceiver module. The transmitter 515 may utilize a single antenna or a set of multiple antennas.

[0122]

[0129] The communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be examples of means for performing various aspects of the BD restriction and overbooking for PDCCH repetitions described herein. For example, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0123]

[0130] In some examples, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in a communications management circuit). The hardware may include a processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in this disclosure. In some examples, the processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by the processor executing instructions stored in the memory).

[0124]

[0131] Additionally or alternatively, in some examples, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in hardware, software (e.g., executed by a processor), or any combination thereof. If implemented in software executed by a processor, the functions of the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be performed by a general-purpose processor (e.g., configured as or otherwise supporting a means for performing the functions described in this disclosure), a DSP, a central processing unit (CPU), a graphics processing unit (GPU), an ASIC, an FPGA, or any combination thereof, or other programmable logic device.

[0125]

[0132] In some examples, the communications manager 520 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise working in conjunction with the receiver 510, the transmitter 515, or both. For example, the communications manager 520 may receive information from the receiver 510, send information to the transmitter 515, or be integrated in combination with the receiver 510, the transmitter 515, or both to receive information, transmit information, or perform various other operations described herein.

[0126]

[0133] The communications manager 520 can support wireless communications in a UE according to examples disclosed herein. For example, the communications manager 520 can be configured as or otherwise support a means for receiving a configuration message from a base station indicating that an individual one of a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI after the first TTI. The communications manager 520 can be configured as or otherwise support a means for determining a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit of the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice. The communications manager 520 can be configured as or otherwise support a means for monitoring downlink control channel transmissions during the second TTI based on the count of the BD limit of the second TTI.

[0127]

[0134] Additionally or alternatively, the communications manager 520 can support wireless communications in the UE according to examples disclosed herein. For example, the communications manager 520 can be configured as or otherwise support a means for receiving a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI. The communications manager 520 can be configured as or otherwise support a means for determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in the TTI. The communications manager 520 can be configured as or otherwise support a means for evaluating an overbooking condition based on a respective number of the first group of downlink control channel candidates and the second group of downlink control channel candidates. The communications manager 520 can be configured as or otherwise support a means for monitoring downlink control channel transmissions during the TTI based on an evaluation of the overbooking condition.

[0128]

[0135] By including or configuring a communications manager 520 according to the examples described herein, the device 505 (e.g., a processor controlling or otherwise coupled to the receiver 510, the transmitter 515, the communications manager 520, or a combination thereof) can support techniques for PDCCH monitoring that result in improved system efficiency, more efficient utilization of available resources, more efficient use of UE computational resources, etc.

[0129]

[0136] 6 illustrates a block diagram 600 of a device 605 supporting BD restriction and overbooking for PDCCH repetitions according to an aspect of the disclosure. The device 605 may be an example of an aspect of the device 505 or UE 115 described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0130]

[0137] The receiver 610 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various traffic channels (e.g., control channels, data channels, traffic channels related to BD restrictions and overbooking on PDCCH repetitions). The information may be passed to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.

[0131]

[0138] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information such as packets, user data, control information, or any combination thereof associated with various traffic channels (e.g., control channels, data channels, traffic channels related to BD restrictions and overbooking on PDCCH repetitions). In some examples, the transmitter 615 may be co-located with the receiver 610 within a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.

[0132]

[0139] The device 605 or various components thereof may be an example of a means for implementing various aspects of BD restriction and overbooking on PDCCH repetitions described herein. For example, the communications manager 620 may include a configuration message manager 625, a control channel candidate manager 630, a monitoring manager 635, an overbooking condition manager 640, or any combination thereof. The communications manager 620 may be an example of an aspect of the communications manager 520 described herein. In some examples, the communications manager 620 or various components thereof may be configured to use or otherwise cooperate with the receiver 610, the transmitter 615, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communications manager 620 may be integrated in combination with the receiver 610, the transmitter 615, or both to receive information from the receiver 610, send information to the transmitter 615, or receive information, transmit information, or perform various other operations described herein.

[0133]

[0140] The communication manager 620 can support wireless communication in the UE according to examples disclosed herein. For example, the configuration message manager 625 can be configured as or otherwise support a means for receiving a configuration message from a base station indicating that an individual one of a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI after the first TTI. The control channel candidate manager 630 can be configured as or otherwise support a means for determining a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit of the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice. The monitoring manager 635 can be configured as or otherwise support a means for monitoring downlink control channel transmissions during the second TTI based on the count of the BD limit of the second TTI.

[0134]

[0141] Additionally or alternatively, the communications manager 620 can support wireless communications in the UE according to examples disclosed herein. The configuration message manager 625 can be configured as or otherwise support a means for receiving a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI. The overbooking condition manager 640 can be configured as or otherwise support a means for determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in the TTI. The overbooking condition manager 640 can be configured as or otherwise support a means for evaluating an overbooking condition based on the respective numbers of the first group of downlink control channel candidates and the second group of downlink control channel candidates. The monitoring manager 635 can be configured as or otherwise support a means for monitoring downlink control channel transmissions during the TTI based on an evaluation of the overbooking condition.

[0135]

[0142] FIG. 7 illustrates a block diagram 700 of a communications manager 720 supporting BD restriction and overbooking on PDCCH repetitions according to an aspect of the disclosure. Communications manager 720 may be an example of an aspect of communications manager 520, communications manager 620, or both described herein. Communications manager 720, or various components thereof, may be an example of a means for implementing various aspects of BD restriction and overbooking on PDCCH repetitions described herein. For example, communications 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 opportunity manager 750, or any combination thereof. Each of these components may communicate with one another directly or indirectly (e.g., via one or more buses).

[0136]

[0143] The communications manager 720 can support wireless communications in the UE according to examples disclosed herein. For example, the configuration message manager 725 can be configured as or otherwise support a means for receiving a configuration message from a base station indicating that an individual one of a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI after the first TTI. The control channel candidate manager 730 can be configured as or otherwise support a means for determining a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit of the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice. The monitoring manager 735 can be configured as or otherwise support a means for monitoring downlink control channel transmissions during the second TTI based on the count of the BD limit of the second TTI.

[0137]

[0144] In some examples, the overbooking condition manager 740 may be configured as or otherwise support a means for determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in the second TTI. In some examples, the overbooking condition manager 740 may be configured as or otherwise support a means for evaluating an overbooking condition based on each combination of a respective one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates and a respective number of the second group of downlink control channel candidates, and the monitoring of the downlink control channel transmissions is further based on the evaluation of the overbooking condition.

[0138]

[0145] In some examples, to support evaluation of an overbooking condition, the overbooking condition manager 740 may be configured with or otherwise support a means for determining whether an overbooking condition is met by evaluating the total number of downlink control channel candidates that are associated with the second SS set together.

[0139]

[0146] In some examples, to support evaluation of an overbooking condition, the overbooking condition manager 740 may be configured with or otherwise support a means for determining whether an overbooking condition is met by evaluating a second group of downlink control channel candidates, separate from the combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0140]

[0147] In some examples, the candidate count manager 745 may be configured as or otherwise support a means for determining to count 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 toward a BD limit per TTI based at least in part on the configuration message, where the third group of downlink control channel candidates comprises a combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates, and for monitoring downlink control channel transmissions during the 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 as or otherwise support a means for counting the second group of downlink control channel candidates and the third group of downlink control channel candidates toward a BD limit for the second TTI. In some examples, the monitoring manager 735 may be configured with or otherwise support a means for monitoring downlink control channel transmissions during the second TTI based at least in part on counting towards the BD limit for the second TTI.

[0141]

[0148] In some examples, the overbooking condition manager 740 may be configured as or otherwise support a means for determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in the first TTI. In some examples, the overbooking condition manager 740 may be configured as or otherwise support a means for evaluating an overbooking condition based on each combination of a respective one of the first group of downlink control channel candidates with a corresponding one of the second group of downlink control channel candidates and a respective number of the first group of downlink control channel candidates, and the monitoring of the downlink control channel transmissions is further based on the evaluation of the overbooking condition.

[0142]

[0149] In some examples, to support evaluation of an overbooking condition, the overbooking condition manager 740 may be configured as or otherwise support a means for determining whether an overbooking condition is met by evaluating a total number of downlink control channel candidates that are together associated with the first SS set.

[0143]

[0150] In some examples, to support evaluation of an overbooking condition, the overbooking condition manager 740 may be configured as or otherwise support a means for determining whether an overbooking condition is met by evaluating a first group of downlink control channel candidates separate from a combination of an individual one of the first group of downlink control channel candidates with a corresponding one of the second group of downlink control channel candidates.

[0144]

[0151] In some examples, the second TTI includes one of a timeslot or a timespan. In some examples, the first TTI includes one of a timeslot or a timespan.

[0145]

[0152] In some examples, the candidate count manager 745 may be configured or otherwise support a means for receiving, from the base station, an instruction to count combinations of individual ones of the first group of downlink control channel candidates and corresponding ones of the second group of downlink control channel candidates, separately from the number of downlink control channel candidates in the second group of downlink control channel candidates, toward the BD limit for the second TTI, and determining the total number of downlink control channel candidates associated with the second SS set may be based on the instruction.

[0146]

[0153] Additionally or alternatively, the communications manager 720 can support wireless communications in the UE according to examples disclosed herein. In some examples, the configuration message manager 725 can be configured as or otherwise support a means for receiving a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI. The overbooking condition manager 740 can be configured as or otherwise support a means for determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in the TTI. In some examples, the overbooking condition manager 740 can be configured as or otherwise support a means for evaluating an overbooking condition based on the respective numbers of the first group of downlink control channel candidates and the second group of downlink control channel candidates. In some examples, the monitoring manager 735 can be configured as or otherwise support a means for monitoring downlink control channel transmissions during the TTI based on an evaluation of the overbooking condition.

[0147]

[0154] In some examples, the monitor manager 735 may be configured or otherwise support a means for comparing a first index value associated with a first SS set to a second index value associated with a second SS set. In some examples, the monitor manager 735 may be configured or otherwise support a means for determining whether an overbooking condition is met by counting each downlink control channel candidate of the second group of downlink control channel candidates twice 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.

[0148]

[0155] In some examples, to support evaluation of an overbooking condition, the overbooking condition manager 740 may be configured with or otherwise support a means for determining whether an overbooking condition is met by jointly evaluating the number of a first group of downlink control channel candidates, the number of a second group of downlink control channel candidates, and each combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0149]

[0156] In some examples, to support evaluation of an overbooking condition, the overbooking condition manager 740 may be configured with or otherwise support a means for determining whether an overbooking condition is met by evaluating a number of the first group of downlink control channel candidates or the second group of downlink control channel candidates, and a third group of downlink control channel candidates, the third group comprising a combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0150]

[0157] In some examples, the monitoring opportunity manager 750 may be configured as or otherwise support a means for comparing a last monitoring opportunity of a first SS set with a last monitoring opportunity of a second SS set. In some examples, the monitoring opportunity manager 750 may be configured as or otherwise support a means for determining that the last monitoring opportunity of the first SS set is later in time than the last monitoring opportunity of the second SS set. In some examples, the monitoring manager 735 may be configured as or otherwise support a means for determining whether to monitor a number of the first group of downlink control channel candidates and each combination of a respective one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates based on determining that the last monitoring opportunity of the first SS set is later in time than the last monitoring opportunity of the second SS set.

[0151]

[0158] In some examples, the monitoring manager 735 may be configured or otherwise support a means for comparing a first index value associated with a first SS set to a second index value associated with a second SS set. In some examples, the monitoring manager 735 may be configured or otherwise support a means for determining to jointly monitor a number of a second group of downlink control channel candidates and a third group of downlink control channel candidates 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.

[0152]

[0159] In some examples, the monitoring manager 735 may be configured or otherwise support a means for comparing a first index value of a first control resource set associated with a first SS set to 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 support a means for determining, based on the comparison, whether to monitor the number of first groups of downlink control channel candidates and each combination of a respective one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0153]

[0160] In some examples, to support evaluation of an overbooking condition, the overbooking condition manager 740 may be configured with or otherwise support a means for determining whether an overbooking condition is met by evaluating a first group of downlink control channel candidates, a second group of downlink control channel candidates, and a combination of each one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates separately from each other.

[0154]

[0161] In some examples, the TTI includes one of a time slot or a time span.

[0155]

[0162] FIG. 8 illustrates a diagram of a system 800 including a device 805 supporting BD restrictions and overbooking for PDCCH repetitions according to an aspect of the disclosure. The device 805 may be an example of or include components of the device 505, device 605, or UE 115 described herein. The device 805 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. The device 805 may include components for two-way voice and data communication, including components for transmitting and receiving communications, such as a communications manager 820, an input / output (I / O) controller 810, a transceiver 815, an antenna 825, a memory 830, code 835, and a processor 840. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 845).

[0156]

[0163] The I / O controller 810 can manage input and output signals for the device 805. The I / O controller 810 can also manage peripherals that are not built into the device 805. In some cases, the I / O controller 810 can represent a physical connection or port to an external peripheral. In some cases, the I / O controller 810 can utilize an operating system, such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. Additionally or alternatively, the I / O controller 810 can represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I / O controller 810 may be implemented as part of a processor, such as the processor 840. In some cases, a user can interact with the device 805 through the I / O controller 810 or through hardware components controlled by the I / O controller 810.

[0157]

[0164] In some cases, the device 805 may include a single antenna 825. However, in some other cases, the device 805 may have two or more antennas 825 that may be 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 may communicate bidirectionally with another wireless transceiver. The transceiver 815 may also include a modem for modulating packets and providing the modulated packets to the one or more antennas 825 for transmission and demodulating packets received from the one or more antennas 825. The transceiver 815, or the transceiver 815 and the one or more antennas 825, may be an example of the transmitter 515, the transmitter 615, the receiver 510, the receiver 610, or any combination or components thereof described herein.

[0158]

[0165] The memory 830 may include random access memory (RAM) and read only memory (ROM). The memory 830 may store computer readable, computer executable code 835 including instructions that, when executed by the processor 840, cause the device 805 to perform various functions described herein. The code 835 may be stored in a non-transitory computer readable medium, such as a system memory or another type of memory. In some cases, the code 835 may not be directly executable by the processor 840, but may (e.g., when compiled and executed) cause a computer to perform functions described herein. In some cases, the memory 830 may include a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0159]

[0166] The processor 840 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a GPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 840 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be incorporated into the processor 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks supporting BD restrictions and overbooking for PDCCH repetitions). For example, the device 805 or a component of the device 805 may include a processor 840 and a memory 830 coupled to the processor 840, where the processor 840 and the memory 830 are configured to perform various functions described herein.

[0160]

[0167] The communications manager 820 can support wireless communications in a UE according to examples disclosed herein. For example, the communications manager 820 can be configured as or otherwise support a means for receiving a configuration message from a base station indicating that an individual one of a first group of downlink control channel candidates in a first SS set of a first TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI after the first TTI. The communications manager 820 can be configured as or otherwise support a means for determining a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit of the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice. The communications manager 820 can be configured as or otherwise support a means for monitoring downlink control channel transmissions during the second TTI based on the count of the BD limit of the second TTI.

[0161]

[0168] Additionally or alternatively, the communications manager 820 can support wireless communications in the UE according to examples disclosed herein. For example, the communications manager 820 can be configured as or otherwise support a means for receiving a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of the TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI. The communications manager 820 can be configured as or otherwise support a means for determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in the TTI. The communications manager 820 can be configured as or otherwise support a means for evaluating an overbooking condition based on a respective number of the first group of downlink control channel candidates and the second group of downlink control channel candidates. The communications manager 820 can be configured as or otherwise support a means for monitoring downlink control channel transmissions during the TTI based on an evaluation of the overbooking condition.

[0162]

[0169] By including or configuring a communications manager 820 according to examples described herein, the device 805 can support techniques for PDCCH monitoring that result in improved system efficiency, more efficient utilization of available resources, more efficient use of UE computational resources, and the like.

[0163]

[0170] In some examples, the communications manager 820 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 815, the one or more antennas 825, or any combination thereof. Although the communications manager 820 is shown as a separate component, in some examples, one or more functions described with reference to the communications manager 820 may be supported by or performed by the processor 840, the memory 830, the code 835, or any combination thereof. For example, the code 835 may include instructions executable by the processor 840 to cause the device 805 to perform various aspects of BD restriction and overbooking on PDCCH repetitions as described herein, or the processor 840 and the memory 830 may be otherwise configured to perform or support such operations.

[0164]

[0171] FIG. 9 illustrates a flow chart illustrating a method 900 for supporting BD restrictions and overbooking on PDCCH repetitions according to an aspect of the disclosure. The operations of the method 900 may be implemented by a UE or components thereof as described herein. For example, the operations of the method 900 may be performed by the UE 115 described with reference to FIGS. 1-8. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0165]

[0172] At 905, the method may include receiving a configuration message from the base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of a first TTI is to be associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI after the first TTI. The operations of 905 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 905 may be performed by a configuration message manager 725 described with reference to FIG.

[0166]

[0173] At 910, the method may include determining a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit for the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice. The operations of 910 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 910 may be performed by the control channel candidate manager 730 described with reference to FIG. 7.

[0167]

[0174] 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 operations of 915 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 915 may be performed by the monitoring manager 735 described with reference to FIG.

[0168]

[0175] FIG. 10 illustrates a flow chart illustrating a method 1000 for supporting BD restrictions and overbooking on PDCCH repetitions according to aspects of the disclosure. The operations of method 1000 may be implemented by a UE or components thereof described herein. For example, the operations of method 1000 may be performed by the UE 115 described with reference to FIGS. 1-8. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0169]

[0176] At 1005, the method may include receiving a configuration message from the base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of a first TTI is to be associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI after the first TTI. The operations of 1005 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1005 may be performed by a configuration message manager 725 described with reference to FIG.

[0170]

[0177] At 1010, the method may include determining a total number of downlink control channel candidates associated with the second SS set to be counted toward the BD limit for the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice. The operations of 1010 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1010 may be performed by the control channel candidate manager 730 described with reference to FIG. 7.

[0171]

[0178] 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 operations of 1015 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1015 may be performed by a monitoring manager 735 described with reference to FIG.

[0172]

[0179] At 1020, the method may include determining to count 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 toward a BD limit per TTI based on the configuration message, where the third group of downlink control channel candidates comprises a combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates, and monitoring downlink control channel transmissions during the second TTI based on the count of the BD limit for the second TTI. The operations of 1020 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1020 may be performed by a candidate count manager 745 described with reference to FIG. 7.

[0173]

[0180] At 1025, the method may include counting the second group of downlink control channel candidates and the third group of downlink control channel candidates toward a BD limit for the second TTI. The operations of 1025 may be performed in accordance with examples disclosed herein.

[0174]

[0181] At 1030, the method may include monitoring downlink control channel transmissions during the second TTI based on counting toward the BD limit for the second TTI. The operations of 1030 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1030 may be performed by a monitoring manager 735 described with reference to FIG.

[0175]

[0182] FIG. 11 illustrates a flow chart illustrating a method 1100 for supporting BD restrictions and overbooking on PDCCH repetitions according to aspects of the disclosure. The operations of method 1100 may be implemented by a UE or components thereof described herein. For example, the operations of method 1100 may be performed by a UE 115 described with reference to FIGS. 1-8. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0176]

[0183] At 1105, the method may include receiving a configuration message from the base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of the TTI is to be associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI. The operations of 1105 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1105 may be performed by a configuration message manager 725 described with reference to FIG.

[0177]

[0184] At 1110, the method may include determining that an overbooking condition exists associated with overbooking of downlink control channel candidates within the TTI. The operations of 1110 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1110 may be performed by an overbooking condition manager 740 described with reference to FIG.

[0178]

[0185] At 1115, the method may include evaluating an overbooking condition based on the respective numbers of the first group of downlink control channel candidates and the second group of downlink control channel candidates. The operations of 1115 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1115 may be performed by an overbooking condition manager 740 described with reference to FIG.

[0179]

[0186] At 1120, the method may include monitoring downlink control channel transmissions during the TTI based on an evaluation of the overbooking condition. The operations of 1120 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1120 may be performed by a monitoring manager 735 described with reference to FIG.

[0180]

[0187] Aspect 1: A method for wireless communication in a UE, comprising: receiving, from a base station, a configuration message indicating that each one of a first group of downlink control channel candidates in a first SS set of a first TTI is to be associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of a second TTI after the first TTI; and determining a total number of downlink control channel candidates associated with the second SS set to be counted toward a BD limit for the second TTI by counting each downlink control channel candidate of the second group of downlink control channel candidates twice.

[0181]

[0188] Aspect 2: The method of aspect 1, further comprising: determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in a second TTI; and evaluating the overbooking condition based at least in part on each combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates and a respective number of the second group of downlink control channel candidates; and wherein monitoring the downlink control channel transmission is further based at least in part on the evaluation of the overbooking condition.

[0182]

[0189] Aspect 3: The method of aspect 2, wherein evaluating the overbooking condition comprises determining whether the overbooking condition is met by evaluating a total number of downlink control channel candidates that are together associated with the second SS set.

[0183]

[0190] Aspect 4: The method of any of aspects 2 to 3, wherein evaluating the overbooking condition comprises determining whether the overbooking condition is met by evaluating a second group of downlink control channel candidates separate from a combination of each one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0184]

[0191] Aspect 5: The method of any of aspects 1 to 4, further comprising: determining 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 to count towards a BD limit per TTI based at least in part on the configuration message, where the third group of downlink control channel candidates comprises a combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates; monitoring downlink control channel transmissions during the second TTI based on the counting of the BD limit for the second TTI; counting the second group of downlink control channel candidates and the third group of downlink control channel candidates towards the BD limit for the second TTI; and monitoring downlink control channel transmissions during the second TTI based at least in part on the counting towards the BD limit for the second TTI.

[0185]

[0192] Aspect 6: The method of aspect 1, further comprising: determining that an overbooking condition exists associated with overbooking of downlink control channel candidates in the first TTI; and evaluating the overbooking condition based at least in part on each combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates and a respective number of the first group of downlink control channel candidates; and wherein monitoring the downlink control channel transmission is further based at least in part on the evaluation of the overbooking condition.

[0186]

[0193] Aspect 7: The method of aspect 6, wherein evaluating the overbooking condition comprises determining whether the overbooking condition is met by evaluating a total number of downlink control channel candidates that are together associated with the first SS set.

[0187]

[0194] Aspect 8: The method of any of aspects 6 to 7, wherein evaluating the overbooking condition comprises determining whether the overbooking condition is met by evaluating a first group of downlink control channel candidates separate from a combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0188]

[0195] Aspect 9: The method of any of aspects 1 to 8, wherein the second TTI comprises one of a timeslot or a timespan, and the first TTI comprises one of a timeslot or a timespan.

[0189]

[0196] Aspect 10: The method of any of aspects 1 to 9, further comprising receiving instructions from the base station to count combinations of individual ones of the first group of downlink control channel candidates and corresponding ones of the second group of downlink control channel candidates separately from the number of downlink control channel candidates in the second group of downlink control channel candidates toward the BD limit for the second TTI, wherein determining a total number of downlink control channel candidates associated with the second SS set is based at least in part on the instructions.

[0190]

[0197] Aspect 11: The method of any of aspects 1 to 10, wherein the other downlink control channel candidate associated with the second TTI corresponds to a third SS set, or a UE-specific SS, or a common SS.

[0191]

[0198] Aspect 12: A method for wireless communication in a UE, comprising: receiving a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first SS set of a TTI is associated with a corresponding one of a second group of downlink control channel candidates in a second SS set of the TTI; determining that an overbooking condition exists associated with overbooking of the downlink control channel candidates in the TTI; evaluating the overbooking condition based at least in part on a respective number of the first group of downlink control channel candidates and the second group of downlink control channel candidates; and monitoring downlink control channel transmissions during the TTI based at least in part on the evaluation of the overbooking condition.

[0192]

[0199] Aspect 13: The method of aspect 12, further comprising: comparing a first index value associated with the first SS set to a second index value associated with the second SS set; and determining whether an overbooking condition is met by counting each downlink control channel candidate of 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.

[0193]

[0200] Aspect 14: The method of aspect 12, wherein evaluating the overbooking condition comprises determining whether the overbooking condition is met by jointly evaluating a number of first groups of downlink control channel candidates, a number of second groups of downlink control channel candidates, and each combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0194]

[0201] Aspect 15: The method of any of aspects 12-14, wherein evaluating the overbooking condition comprises determining whether the overbooking condition is met by evaluating a number of the first group of downlink control channel candidates or the second group of downlink control channel candidates, and a third group of downlink control channel candidates, wherein the third group comprises a combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0195]

[0202] Aspect 16: The method of aspect 15, further comprising: comparing the last monitoring opportunity of the first SS set with the last monitoring opportunity of the second SS set; determining that the last monitoring opportunity of the first SS set is later in time than the last monitoring opportunity of the second SS set; and determining whether to monitor a number of first groups of downlink control channel candidates and each combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates based at least in part on determining that the last monitoring opportunity of the first SS set is later in time than the last monitoring opportunity of the second SS set.

[0196]

[0203] Aspect 17: The method of any of aspects 15 to 16, further comprising: comparing a first index value associated with the first SS set to a second index value associated with the second SS set; and determining to jointly monitor a number of the second group of downlink control channel candidates and a third group of downlink control channel candidates 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.

[0197]

[0204] Aspect 18: The method of any of aspects 15 to 17, further comprising: comparing a first index value of a first control resource set associated with a first SS set to a second index of a second control resource set associated with a second SS set; and determining, based at least in part on the comparison, whether to monitor a number of first groups of downlink control channel candidates and each combination of an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates.

[0198]

[0205] Aspect 19: The method of any of aspects 12 to 18, wherein evaluating the overbooking condition comprises determining whether the overbooking condition is met by evaluating a first group of downlink control channel candidates, a second group of downlink control channel candidates, and a combination of each one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates separately from each other.

[0199]

[0206] Aspect 20: The method of any of aspects 12 to 19, wherein the TTI comprises one of a time slot or a time span.

[0200]

[0207] Aspect 21: An apparatus for wireless communication in 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 any of the methods of aspects 1 to 11.

[0201]

[0208] Example 22: An apparatus for wireless communication in a UE, comprising at least one means for performing the method of any of Examples 1 to 11.

[0202]

[0209] Aspect 23: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code comprising instructions executable by a processor to perform the method of any of aspects 1 to 11.

[0203]

[0210] Aspect 24: An apparatus for wireless communication in 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 any of the methods of aspects 12 to 20.

[0204]

[0211] Aspect 25: An apparatus for wireless communication in a UE, comprising at least one means for performing the method of any of aspects 12 to 20.

[0205]

[0212] Aspect 26: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code comprising instructions executable by a processor to perform the method of any of aspects 12 to 20.

[0206]

[0213] It should be noted that the methods described herein describe possible implementations, that the acts and steps may be rearranged or otherwise modified, and that other implementations are possible. Additionally, aspects from two or more of the methods may be combined.

[0207]

[0214] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described as examples, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable to other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described herein are applicable to other systems and radio technologies, including various other wireless communication systems such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDM, and future systems and radio technologies not explicitly mentioned herein.

[0208]

[0215] The information and signals described herein may be represented using any of a wide variety of technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0209]

[0216] The various example blocks and components described in connection with the disclosure herein may be implemented or performed using a general purpose processor, a DSP, an ASIC, a CPU, a GPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but alternatively, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0210]

[0217] The functions described herein may be implemented in hardware, software executed by a processor, or any combination thereof. Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, should be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, among other examples. When implemented in software executed by a processor, the functions may be stored on or transmitted over a computer-readable medium as one or more instructions or code. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, depending on the nature of the software, the functions described herein may be implemented using software executed by a processor, hardware, hardwiring, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed such that parts of the functions are implemented in different physical locations. Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, or functions, whether referred to as software, middleware, microcode, hardware description language, or otherwise. When implemented in software executed by a processor, the functions may be stored on or transmitted over a computer-readable medium as one or more instructions or code. Other examples and implementations are within the scope of this disclosure and the appended claims.For example, due to the nature of the software, the functions described herein may be implemented using software executed by a processor, hardware, hardwiring, or any combination thereof. Features that implement the functions may also be physically located in various locations, including being distributed such that portions of the functions are implemented in different physical locations.

[0211]

[0218] Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates transfer of a computer program from one place to another. Non-transitory storage media may be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, Electrically Erasable Programmable ROM (EEPROM), flash memory, phase-change memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer readable media. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc, where disks typically reproduce data magnetically and discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer readable media.

[0212]

[0219] As used herein, including in the claims, "or" used within a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such as, for example, 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). Also, the phrase "based on" used herein should not be interpreted as a reference to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the disclosure. In other words, the phrase "based on" used herein should be interpreted similarly to the phrase "based at least in part on". As used herein, the term "and / or" when used within a list of two or more items means that any one of the listed items may be utilized alone, or any combination of two or more of the listed items may be utilized. For example, if a composition is described as containing components A, B, and / or C, the composition can include only A, only B, only 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.

[0213]

[0220] In the accompanying figures, similar components or features may have the same reference label. Furthermore, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes the similar components. If only a first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of the second reference label, or any other subsequent reference label.

[0214]

[0221] The description set forth herein with respect to the accompanying drawings describes exemplary configurations and does not necessarily represent all examples that may 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 does not mean "preferred" or "advantageous over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0215]

[0222] The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. 1. A method for wireless communication in a user equipment (UE), comprising: receiving a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first search space set in a first transmission time interval is to be linked to a corresponding one of a second group of downlink control channel candidates in a second search space set in a second transmission time interval following the first transmission time interval; determining a total number of downlink control channel candidates linked to the second search space set to be counted towards 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; monitoring a downlink control channel transmission during the second transmission time interval based at least in part on the count of the blind decode limit for the second transmission time interval; A method comprising:

2. determining 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 toward a blind decoding limit per transmission time interval based at least in part on the configuration message, where the third group of downlink control channel candidates comprises a combination of an individual one of the first group of downlink control channel candidates and a corresponding one 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 toward the blind decoding limit for the second transmission time interval; monitoring a downlink control channel transmission during the second transmission time interval based at least in part on the counting toward the blind decode limit for the second transmission time interval; The method of claim 1 further comprising:

3. determining that an overbooking condition exists associated with an overbooking of downlink control channel candidates within the first transmission time interval; 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 a respective one of the first group of downlink control channel candidates with a corresponding one of the second group of downlink control channel candidates, wherein the monitoring of downlink control channel transmissions is further based at least in part on the evaluation of the overbooking condition. The method of claim 1 further comprising:

4. Evaluating the overbooking condition includes: determining whether the overbooking condition is met by evaluating the total number of downlink control channel candidates that are jointly associated with the first search space set; or determining whether the overbooking condition is met by evaluating the first group of downlink control channel candidates separately from the combination of each one of the first group of downlink control channel candidates with a corresponding one of the second group of downlink control channel candidates; The method of claim 3 comprising:

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

6. Evaluating the overbooking condition includes: determining whether the overbooking condition is met by evaluating the total number of downlink control channel candidates that are jointly associated with the second search space set; or determining whether the overbooking condition is met by evaluating the second group of downlink control channel candidates separately from the combination of each one of the first group of downlink control channel candidates with a corresponding one of the second group of downlink control channel candidates; The method of claim 5 comprising:

7. the second transmission time interval comprises one of a timeslot or a timespan; the first transmission time interval comprises one of a timeslot or a timespan. The method of claim 1.

8. receiving instructions from the base station to count combinations of individual ones of the first group of downlink control channel candidates and corresponding ones of the second group of downlink control channel candidates separately from a number of downlink control channel candidates in the second group of downlink control channel candidates toward 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. The method of claim 1 further comprising:

9. 1. A method for wireless communication in a user equipment (UE), comprising: receiving a configuration message from a base station indicating that a respective one of a first group of downlink control channel candidates in a first search space set of transmission time intervals is to be linked to a corresponding one of a second group of downlink control channel candidates in a second search space set of said transmission time intervals; determining that an overbooking condition exists associated with an overbooking of downlink control channel candidates within the transmission time interval; evaluating the overbooking condition based at least in part on a respective population of the first group of downlink control channel candidates and the second group of downlink control channel candidates; monitoring a downlink control channel transmission during the transmission time interval based at least in part on the assessment of the overbooking condition; and evaluating the overbooking condition comprises: comparing a first index value associated with the first search space set to a second index value associated with the second search space set; 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 search space set is greater than the first index value associated with the first search space set; and A method comprising:

10. 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 an individual one of the first group of downlink control channel candidates and a corresponding one of the second group of downlink control channel candidates; The method of claim 9 comprising:

11. Evaluating the overbooking condition includes: determining whether the overbooking condition is met by evaluating the first group of downlink control channel candidates, the second group of downlink control channel candidates, and combinations of individual ones of the first group of downlink control channel candidates and corresponding ones of the second group of downlink control channel candidates separately from each other; The method of claim 9 comprising:

12. The method of claim 9 , wherein the transmission time interval comprises one of a time slot or a time span.

13. An apparatus for wireless communication in a user equipment (UE), comprising: At least one processor; a memory coupled to the at least one processor; 13. An apparatus comprising: a memory for storing instructions executable by the at least one processor to cause the apparatus to perform a method according to any one of claims 1 to 12.

14. 13. A non-transitory computer readable medium storing code for wireless communication in a user equipment (UE), the code comprising instructions executable by the at least one processor to perform the method of any one of claims 1 to 12.

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