Search space set monitoring for physical downlink control channel repetition

Abstract

Methods, systems, and devices for wireless communication are described. Generally, physical downlink control channel (PDCCH) candidates in a first search space (SS) set and a second SS set can be located in the same slot. A UE can determine that the SS sets are linked when the two SS sets have the same periodicity and the same offset. The UE can expect the same number of monitoring occasions for each SS set within a slot, and can determine that a monitoring occasion with a first index value in the first SS set is linked with a monitoring occasion with the same index value in the second SS set. The UE can determine that monitoring occasions for different SS sets with the same periodicity but different offsets are located in different slots, and satisfy a rule such that a first PDCCH repetition is located in an earlier slot than a second PDDCH repetition.

Description

[0001] Cross-references

[0002] This patent application claims priority to the following applications: U.S. Patent Application No. 17 / 573,234, filed January 11, 2022, entitled “SEARCH SPACE SET MONITORING FOR PHYSICAL DOWNLINK CONTROLCHANNEL REPETITION” by KHOSHNEVISAN et al.; and U.S. Provisional Patent Application No. 63 / 136,632, filed January 12, 2021, entitled “SEARCH SPACE SET MONITORING FOR PHYSICAL DOWNLINK CONTROL CHANNEL REPETITION”; each of the above applications is assigned to the assignee of this application. Technical Field

[0003] The following discussion relates to wireless communications, including the monitoring of search space sets for repeated physical downlink control channels. Background Technology

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

[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support search space (SS) set monitoring for physical downlink control channel (PDCCH) repetition. Generally, a user equipment (UE) can determine whether a monitoring occasion of a first SS set is linked to a monitoring occasion of a second SS set when the different SS sets are in a same slot or different slots. For example, the UE can determine that PDCCH candidates in the first SS set and the second SS set are located in a same slot based on a monitoring pattern for the SS sets as configured by a base station. The UE can determine that the SS sets located in the same slot are linked when the two SS sets have a same periodicity and a same offset. In some examples, the duration of the monitoring pattern can also be the same. In some examples, the UE can expect a same number of monitoring occasions for each SS set within a slot (e.g., a radio resource control (RRC) parameter monitoring symbolsWithinSlot can be the same for each SS set). The UE can determine that each SS set has the same number of monitoring occasions and that a monitoring occasion with a first index value in the first SS set is linked with a monitoring occasion with the same index value in the second SS set.

[0006] In some examples, the UE can determine that the monitoring occasions for the different SS sets are located in different slots based on an indication from the base station, in which the two SS sets have a same periodicity but different offsets. The UE can determine that one or more rules are satisfied such that a first PDCCH repetition in the first SS set is always located in an earlier slot compared to a second PDDCH repetition in the second SS set.

[0007] A method for wireless communication at a UE is described. The method can include receiving, from a base station, a configuration indicating a first monitoring pattern for a first SS set within a transmission time interval and a second monitoring pattern for a second SS set within the transmission time interval, receiving, from the base station, an indication that a first set of downlink control channel candidates in the first SS set are linked with a second set of downlink control channel candidates in the second SS set for downlink control channel repetition, and monitoring the first set of downlink control channel candidates of the first SS set and the second set of downlink control channel candidates of the second SS set based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

[0008] An apparatus for wireless communication at a UE is described. The apparatus can include at least one processor, memory coupled (e.g., operatively, communicatively, functionally, electronically, or electrically) to the at least one processor, the memory storing instructions that are executable by the at least one processor to cause the apparatus to receive, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a transmission time interval and a second monitoring pattern for a second set of SSs within the transmission time interval, receive, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition, and monitor the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

[0009] Another apparatus for wireless communication at a UE is described. The apparatus can include means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a transmission time interval and a second monitoring pattern for a second set of SSs within the transmission time interval, means for receiving, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition, and means for monitoring the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

[0010] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code can include instructions executable by a processor to receive, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a transmission time interval and a second monitoring pattern for a second set of SSs within the transmission time interval, receive, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition, and monitor the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

[0011] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for verifying that a number of monitoring occasions of the first monitoring mode can be the same as a number of monitoring occasions of the second monitoring mode, where monitoring the first set of downlink control channel candidates and the second set of downlink control channel candidates can be further based on the verifying.

[0012] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for determining that a first monitoring occasion of the first SS set can be linked with a second monitoring occasion of the second SS set based on verifying that the first monitoring mode and the second monitoring mode can have a same number of monitoring occasions.

[0013] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for determining that a monitoring occasion from each of the first SS and the second SS can be linked based on a time ordering of the monitoring occasions within the first SS and the second SS, respectively, based on verifying that the first monitoring mode and the second monitoring mode can have a same number of monitoring occasions.

[0014] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for determining that a monitoring occasion from each of the first SS and the second SS can be linked based on a sequence of index values associated with the monitoring occasions within the first SS and the second SS, respectively, based on verifying that the first monitoring mode and the second monitoring mode can have a same number of monitoring occasions.

[0015] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for determining that a first downlink control channel candidate of the first set of downlink control channel candidates located in the first monitoring occasion can be linked with a second downlink control channel candidate of the second set of downlink control channel candidates located in the second monitoring occasion based on determining that the first monitoring occasion can be linked with the second monitoring occasion.

[0016] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for receiving, based on the monitoring, a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate, and combining the first repetition of the downlink control message and the second repetition of the downlink control message.

[0017] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for verifying that a duration of the first set of SSs within the period of the monitoring mode can be the same as a duration of the second set of SSs within the period of the monitoring mode, where monitoring the first group of downlink control channel candidates and the second group of downlink control channel candidates can be further based on the verifying.

[0018] A method for wireless communication is described that can be performed at a UE. The method can include receiving, from a base station, a configuration indicating a first monitoring mode for a first set of SSs within a first transmission time interval and a second monitoring mode for a second set of SSs within a second transmission time interval, receiving, from the base station, an indication that a first group of downlink control channel candidates in the first set of SSs are linked with a second group of downlink control channel candidates in the second set of SSs for downlink control channel repetition, and monitoring the first group of downlink control channel candidates of the first set of SSs and the second group of downlink control channel candidates of the second set of SSs based on the first set of SSs and the second set of SSs having a same periodicity but different offsets.

[0019] An apparatus for wireless communication is described that can be performed at a UE. The apparatus can include at least one processor, memory coupled (e.g., operatively, communicatively, functionally, electronically, or electrically) to the at least one processor, the memory storing instructions that are executable by the at least one processor to cause the apparatus to receive, from a base station, a configuration indicating a first monitoring mode for a first set of SSs within a first transmission time interval and a second monitoring mode for a second set of SSs within a second transmission time interval, receive, from the base station, an indication that a first group of downlink control channel candidates in the first set of SSs are linked with a second group of downlink control channel candidates in the second set of SSs for downlink control channel repetition, and monitor the first group of downlink control channel candidates of the first set of SSs and the second group of downlink control channel candidates of the second set of SSs based on the first set of SSs and the second set of SSs having a same periodicity but different offsets.

[0020] Another apparatus for wireless communication at a UE is described. The apparatus can include means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a first transmission time interval and a second monitoring pattern for a second set of SSs within a second transmission time interval, receiving, from the base station, an indication that a first group of downlink control channel candidates in the first set of SSs are linked with a second group of downlink control channel candidates in the second set of SSs for downlink control channel repetition, and monitoring the first group of downlink control channel candidates of the first set of SSs and the second group of downlink control channel candidates of the second set of SSs based on the first set of SSs and the second set of SSs having a same periodicity but different offsets.

[0021] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code can include instructions executable by a processor to receive, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a first transmission time interval and a second monitoring pattern for a second set of SSs within a second transmission time interval, receive, from the base station, an indication that a first group of downlink control channel candidates in the first set of SSs are linked with a second group of downlink control channel candidates in the second set of SSs for downlink control channel repetition, and monitor the first group of downlink control channel candidates of the first set of SSs and the second group of downlink control channel candidates of the second set of SSs based on the first set of SSs and the second set of SSs having a same periodicity but different offsets.

[0022] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for comparing the first monitoring pattern and the second monitoring pattern to determine whether a set of one or more rules can be satisfied and determining that a first downlink control channel candidate of the first group of downlink control channel candidates can be linked with a second downlink control channel candidate of the second group of downlink control channel candidates based on the set of one or more rules being satisfied.

[0023] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for determining that the one or more rules can be satisfied based at least in part on: a first slot number of the first transmission time interval, a first frame number associated with the first transmission time interval, a first offset of the first SS set, a second slot number of the second transmission time interval, a second frame number associated with the second transmission time interval, a second offset of the second SS set, or any combination thereof, where the second frame number multiplied by a number of slots per frame plus the second slot number can be greater than the first frame number multiplied by the number of slots per frame plus the second slot number, the first frame number multiplied by the number of slots per frame plus the second slot number can be greater than the second frame number multiplied by a number of frames per slot plus the second slot number minus a period of time of a same periodicity of the first SS set and the second SS set.

[0024] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for ordering the first SS set and the second SS set, where determining that the one or more rules can be satisfied can be based on ordering the first SS set and the second SS set.

[0025] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for receiving an indication from a base station that the first SS set can be ordered before the second SS set.

[0026] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for identifying a first index for the first SS set and a second index for the second SS set, where comparing the first monitoring pattern and the second monitoring pattern includes comparing the first index to the second index.

[0027] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for receiving, based on the one or more rules being satisfied, a first repetition of a downlink control message on a first downlink control channel candidate and a second repetition of the downlink control message on a second downlink control channel candidate, and combining the first repetition of the downlink control message and the second repetition of the downlink control message.

[0028] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for determining that the first transmission time interval can be located before the second transmission time interval based on determining whether the one or more rules can be satisfied.

[0029] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, a duration of the first set of SSs within the period of the monitoring mode can be the same as a duration of the second set of SSs within the period of the monitoring mode.

[0030] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the duration includes a transmission time interval.

[0031] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the duration includes a set of consecutive transmission time intervals.

[0032] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for verifying that a number of monitoring occasions of the first monitoring mode can be the same as a number of monitoring occasions of the second monitoring mode, determining that a first monitoring occasion of the first set of SSs can be linked with a second monitoring occasion of the second set of SSs based on verifying that the first monitoring mode and the second monitoring mode can have the same number of monitoring occasions, and determining that a first downlink control channel candidate of the first group of downlink control channel candidates can be linked with a second downlink control channel candidate of the second group of downlink control channel candidates based on determining that the first monitoring occasion can be linked with the second monitoring occasion.

[0033] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for receiving, based on the monitoring, a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate, and combining the first repetition of the downlink control message and the second repetition of the downlink control message. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 An example of a wireless communications system that supports search space (SS) set monitoring for physical downlink control channel (PDCCH) repetition is shown in accordance with aspects of the present disclosure.

[0035] Figure 2 An example of a wireless communications system that supports SS set monitoring for PDCCH repetition is shown in accordance with aspects of the present disclosure.

[0036] Figure 3 An example illustrating a timeline that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown.

[0037] Figure 4 An example illustrating a timeline that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown.

[0038] Figure 5 An example illustrating a timeline that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown.

[0039] Figure 6 An example illustrating a timeline that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown.

[0040] Figure 7 And Figure 8 A block diagram of a device that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown.

[0041] Figure 9 A block diagram of a communications manager that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown.

[0042] Figure 10 A diagram illustrating a system including a device that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown.

[0043] Figures 11 to 14 A flow diagram illustrating a method that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0044] Some wireless communication systems can support physical downlink control channel (PDCCH) monitoring, as well as PDCCH repetition across different search space (SS) sets. A user equipment (UE) can be configured with PDCCH repetition. In such examples, a base station can transmit control information multiple times across multiple repetitions. PDCCH candidates of a first SS set can be linked with PDCCH candidates of a second SS set. The UE can perform a soft combining procedure by combining control signaling received in a first PDCCH candidate in the first SS set with control signaling received in the second SS set. Thus, the UE can monitor a first set of PDDCH candidates (e.g., in the first SS set), a second set of PDCCH candidates (e.g., in 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). Each SS set can be defined in terms of a monitoring slot periodicity and offset, as well as other parameters (e.g., duration, number of monitoring occasions, etc.). Thus, monitoring occasions of an SS set can be interspersed across slots in a slot-to-slot PDCCH repetition scenario, across individual symbols of a slot in a slot- within-slot PDCCH repetition scenario, or both. The UE can benefit from knowing how to determine which monitoring occasions of a first SS set are linked with which monitoring occasions of a second SS set to successfully monitor linked PDCCH candidates and combine repetitions of control signals.

[0045] Techniques for determining whether monitoring occasions of a first SS set are linked to monitoring occasions of a second SS set when the different SS sets are in the same slot or in different slots. For example, a UE can determine that PDCCH candidates in a first SS set and a second SS set are in the same slot based on a monitoring pattern for the SS sets as configured by RRC parameters (e.g., such as the monitoringSlotPeriodicityAndOffset parameter). When the two SS sets have the same periodicity and the same offset, the UE can determine that the SS sets in the same slot are linked. In some examples, the duration of the monitoring pattern can also be the same. In such examples, the UE can expect the same number of monitoring occasions for each SS set within a slot (e.g., the RRC parameter monitoring symbolsWithinSlot can be the same for each SS set). The UE can determine that each SS set has the same number of monitoring occasions, and that a monitoring occasion with a first index value in the first SS set is linked with a monitoring occasion with the same index value in the second SS set.

[0046] In some examples, a UE can determine that monitoring occasions for different SS sets are located in different slots based on a monitoring pattern (e.g., as configured for each SS set by an RRC parameter such as monitoringSlotPeriodicityAndOffset), where two SS sets have a same periodicity but different offsets. The UE can determine that one or more rules are satisfied such that a first PDCCH repetition in a first SS set is always located in an earlier slot compared to a second PDDCH repetition in a second SS set. In such examples, the UE can determine that a monitoring occasion with a first index value in the first SS set is linked with a monitoring occasion with a same index value in the second SS set.

[0047] Aspects of the disclosure are first described in the context of a wireless communication system and timelines. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts related to SS set monitoring for PDCCH repetition.

[0048] Figure 1 An example of a wireless communication system 100 that supports SS set monitoring for PDCCH repetition is shown in accordance with aspects of the present disclosure. The wireless communication system 100 can 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 can be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 can 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.

[0049] The base stations 105 can be dispersed throughout the geographic area 100 and can be geographic distributed in different forms or have different capabilities. The base stations 105 and UEs 115 can wirelessly communicate with one another via one or more communication links 125. Each base station 105 can provide communication coverage for a respective geographic area 110 over which UEs 115 and the base stations 105 can establish one or more communication links 125. The coverage area 110 can be an example of a geographic area over which a base station 105 and a UE 115 can support the transfer of data according to one or more radio access technologies.

[0050] The UEs 115 can be dispersed throughout the coverage areas 110 of the wireless communications system 100, and each UE 115 can be stationary, or mobile, or both at different times. The UEs 115 can be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein can be able to communicate 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. Figure 1 The UEs 115 described herein can be able to communicate as relay devices facilitating communication for other UEs 115. Figure 1

[0051] The base stations 105 can communicate with the core network 130, or with one another, or both. For example, the base stations 105 can interface with the core network 130 through one or more backhaul links 120 (e.g., via an SI, N2, N3, or other interface). The base stations 105 can communicate with one another over the backhaul links 120 (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between base stations 105), or indirectly (e.g., via core network 130), or both. In some examples, the backhaul links 120 can be or include one or more wireless links.

[0052] One or more of the base stations 105 described herein can include or can be referred to by a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next-generation NodeB or giga-NodeB (either of which can be referred to as a gNB), a Home NodeB, a Home eNodeB, or other suitable terminology.

[0053] ​A UE 115 can include or can 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 the “device” can also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 can also include or can be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA), a multimedia / entertainment device (e.g., a wireless unit, a MP3 player, or a video device), a camera, a gaming device, a navigation / positioning device (e.g., a GNSS (global navigation satellite system) device based on, for example, GPS (global positioning system), Beidou, GLONASS, or Galileo, or a terrestrial-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, smart clothing, smart glasses, virtual reality glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)), a drone, a robotic / robotic device, a vehicle, a vehicular device, an instrument (e.g., a parking meter, an electricity meter, a gas meter, a water meter), a monitor, a gas pump, an appliance (e.g., a kitchen appliance, a washing machine, a dryer), a location marker, a medical / healthcare device, an implant, a sensor / actuator, a display, or any other suitable device configured to communicate via a wireless or wired medium. In some examples, a UE 115 can include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which can be implemented in various objects such as appliances, or vehicles, instruments, among other examples.

[0054] The UEs 115 described herein can be able to communicate with various types of devices, such as other UEs 115 that can sometimes act as relays or devices that can sometimes function as a base station 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. Figure 1

[0055] ​The UEs 115 and the base stations 105 can wirelessly communicate with one another via one or more communication links 125 over one or more carriers. The term “carrier” can refer to a set of radio frequency spectrum resources (e.g., frequency channels) with a defined physical layer structure (e.g., IEEE 802.11) used for communicating communications links 125. For example, the carrier can include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP) that is used for operations 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 can carry acquisition signaling (e.g., synchronization signals, system information), control signaling (e.g., control channels), user data (e.g., data channels), or other signaling. The wireless communications system 100 can support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers.

[0056] In some examples (e.g., in carrier aggregation configurations), a carrier can also have acquisition signaling or control signaling that coordinates operations for other carriers. A carrier can be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN)) and can be positioned according to a channel raster to facilitate discovery by UEs 115. A carrier can be operated in a standalone mode where initial acquisition and connection can be initiated by a UE 115 via the carrier, or the carrier can be operated in a non-standalone mode where connection is anchored via a different carrier (e.g., of a same or a different radio access technology).

[0057] The communication links 125 shown in wireless communications system 100 can include uplink transmissions from a UE 115 to a base station 105, or downlink transmissions from a base station 105 to a UE 115. Carriers can carry downlink or uplink communications (e.g., in an FDD mode) or can be configured to carry downlink and uplink communications (e.g., in a TDD mode).

[0058] A carrier can be associated with a particular bandwidth of the radio frequency spectrum, and in some examples the carrier bandwidth can be referred to as a “system bandwidth” of the carrier or wireless communications system 100. For example, the carrier bandwidth can be one of a number of determined bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). Devices of wireless communications system 100 (e.g., base stations 105, UEs 115, or both) can have hardware configurations that support communications over a particular carrier bandwidth or can be configurable to support communications over one of a set of carrier bandwidths. In some examples, wireless communications system 100 can include base stations 105 or UEs 115 that support simultaneous communications via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 can be configured for operating over portions (e.g., sub-bands, BWP) or all of a carrier bandwidth.

[0059] Signal waveforms transmitted over a carrier can be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In OFDM systems, a resource element can consist of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element can depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Thus, the more resource elements that a UE 115 receives and the higher the order of the modulation scheme, the higher the data rates for the UE 115 can be. Wireless communications resources can refer to combinations of frequency

[0060] One or more numerologies can be supported for a carrier, in which a numerology can include a subcarrier spacing (Af) and a cyclic prefix. A carrier can be partitioned into one or more BWPs with the same or different numerologies. In some examples, a UE 115 can be configured with multiple BWPs. In some examples, a single BWP for a carrier can be active at a given time, and communications for a UE 115 can be restricted to one or more active BWPs.

[0061] Time intervals for a base station 105 or UE 115 can be expressed in multiples of a basic time unit (which can for example be reciprocal of the maximum supported s = 1 / (Af max · N f) second sampling period, in which Δf max may represent a maximum supported subcarrier spacing, and N f may represent a maximum supported discrete Fourier transform (DFT) size) to express. A time interval of a communication resource can be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0062] Each frame can include a plurality of sequentially numbered subframes or slots, and each subframe or slot can have the same time duration. In some examples, a frame can be divided (e.g., in the time domain) into subframes, and each subframe can be further divided into a number of slots. Alternatively, each frame can include a variable number of slots, and the number of slots can depend on the subcarrier spacing. Each slot can include a number of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period). In some wireless communication systems 100, slots can be further divided into multiple mini-slots containing one or more symbols. Each symbol period can contain one or more (e.g., N f symbol periods) sampling periods excluding the cyclic prefix. The duration of a symbol period can depend on the subcarrier spacing or the operating band.

[0063] A subframe, a slot, a mini-slot, or a symbol can be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and can be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) can be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0064] Physical channels can be multiplexed on a carrier according to various techniques. A physical control channel and a physical data channel can be multiplexed on a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for a physical control channel can be defined by a number of symbol periods and can extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more of the UEs 115 can monitor or search control regions for control information according to one or more search space sets, and each search space set can include one or more control channel candidates arranged in a cascaded manner across one or more aggregation levels. An aggregation level for a control channel candidate can refer to a number of control channel resources (e.g., control channel elements (CCEs)) associated with encoded information for a control information format having a given payload size. Search space sets can include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.

[0065] Each base station 105 can provide communication coverage for 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 for communication with a base station 105 (e.g., on a carrier) and can be associated with a identifier, such as a physical cell identifier (PCID), virtual cell identifier (VCID), or otherwise. In some examples, a cell can also refer to a geographical area 110 or a subset of a geographical area 110 (e.g., a sector) over which a logical communication entity operates. Such a cell can range in size from a small area (e.g., a structure, a subset of a structure, or an external space between or overlapping with geographical coverage areas 110) to a large area depending on various factors such as capacity requirements, coverage requirements, and / or the like. For example, a cell can be or include a building, a subset of a building, or an external space between or overlapping with geographical coverage areas 110, among other examples.

[0066] A macro cell can generally cover a relatively large geographic area (e.g., several kilometers in radius) and can allow restricted access from UEs 115 with service subscriptions with a network provider supporting the macro cell. A small cell can be associated with a lower- powered base station 105 and can be configured to provide service to a relatively small geographic area (e.g., a home or a business) in which access can be restricted based on various usage criteria. A small cell can also be utilized to provide better network coverage to a large geographic area (e.g., a macro cell can be utilized to provide service to an urban area, and small cells can be utilized to provide service to a rural area or to a dense urban area). In some examples, base station 105 can support one or multiple cells, and can also support communication using one or more component carriers.

[0067] In some examples, a carrier can support multiple cells, and different cells of the carrier can be configured according to different protocol types (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)) that can provide access for different types of devices.

[0068] In some examples, base station 105 can be movable and therefore provide communication coverage for a moving geographic coverage area 110. In some examples, different geographic coverage areas 110 associated with different technologies can overlap, but the different geographic coverage areas 110 can be supported by the same base station 105. In other examples, the overlapping geographic coverage areas 110 associated with different technologies can be supported by different base stations 105. The wireless communications system 100 can include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0069] The wireless communications system 100 can support synchronous or asynchronous operation. For synchronous operation, the base stations 105 can have similar frame timings, and transmissions from different base stations 105 can be approximately aligned in time. For asynchronous operation, the base stations 105 can have different frame timings, and transmissions from different base stations 105 can not be aligned in time. The techniques described herein can be used for synchronous or asynchronous operation.

[0070] Some UEs 115, such as MTC or IoT devices, can be low cost or low complexity devices, and can provide for automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with one another or a base station 105 without human intervention. In some examples, M2M communication or MTC can include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that makes use of the information or presents the information to humans in an intuitive manner. Some UEs 115 can 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 charging. In one aspect, the techniques disclosed herein can be suitable for use in MTC or IoT UEs. MTC or IoT UEs can include MTC / enhanced MTC (eMTC, also referred to as CAT-M, Cat Ml) UEs, NB-IoT (also referred to as CAT NB1) UEs, and other types of UEs. eMTC and NB-IoT can refer to technologies that can evolve from these technologies or can be based on these technologies in the future. For example, eMTC can include FeMTC (further eMTC), eFeMTC (enhanced further eMTC), and mMTC (massive MTC), and NB-IoT can include eNB-IoT (enhanced NB-IoT) and FeNB-IoT (further enhanced NB-IoT).

[0071] Some UEs 115 can be configured to employ operating modes that reduce power consumption, such as a half-duplex communication (e.g., a mode in which transmission and reception do not occur simultaneously, such as through a switch from transmission mode to reception mode, or vice versa). In some examples, half-duplex

[0072] The wireless communications system 100 can be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 can be configured to support ultra-reliable low-latency communications (URLLC) or mission critical communications. UEs 115 can be designed to support ultra-reliable, low-latency, or mission critical functions (e.g., mission critical function). Ultra-reliable communications can include private communication or group communications, and can be supported through one or more mission critical services such as mission critical push-to-talk (MCPTT), mission critical video (MCVideo), or mission critical data (MCData). Support for mission critical functions can include prioritization of services, and mission critical services can be used for public safety or general commercial application. The terms ultra-reliable, low-latency, mission critical, and ultra-reliable low- latency can be used interchangeably herein.

[0073] In some examples, UEs 115 can also be able to communicate directly with each other using 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 communications can be within the geographic coverage area 110 of a base station 105. Other UEs 115 in such a group can be outside the geographic coverage area 110 of a base station 105 or be otherwise unable to receive transmissions from a base station 105. In some examples, groups of UEs 115 communicating via D2D communications can 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, a base station 105 facilitates the scheduling of resources for D2D communications. In other cases, D2D communications are carried out between UEs 115 without the involvement of a base station 105.

[0074] In some systems, the D2D communication link 135 can be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115). In some examples, vehicles can communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these. A vehicle can signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information related to V2X systems. In some examples, vehicles in a V2X system can communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes, such as base stations 105, using vehicle-to-network (V2N) communications, or with both.

[0075] The core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 can be an evolved packet core (EPC) or 5G core (5GC), which can include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity that routes packets or interconnects to external networks, such as a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF). The control plane entity can manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for UEs 115 served by base stations 105 associated with the core network 130. User IP packets can be transferred through the user plane entity, which can provide IP address allocation as well as other functions. The user plane entity can be connected to the IP services 150 for one or more network operators. The IP services 150 can include access to the Internet, Intranet(s), an IP multimedia subsystem (IMS), or a packet-switched streaming service.

[0076] Some of the network devices, such as a base station 105, can include subcomponents such as an access network entity 140, which can be an example of an access node controller (ANC). Each access network entity 140 can communicate with UEs 115 through one or more other access network transmission entities 145, which can be referred to as radio heads, smart radio heads, or transmission / reception points (TRPs). Each access network transmission entity 145 can include one or more antenna panels. In some configurations, various functions of each access network entity 140 or base station 105 can be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., a base station 105).

[0077] The wireless communications system 100 can operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band, since the wavelengths range from approximately one decimeter to one meter in length. UHF waves can be blocked or redirected by buildings and environmental features, but the waves can penetrate structures sufficiently for a macro cell to provide service to UEs 115 located indoors. Transmission of UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.

[0078] The wireless communications system 100 can also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as centimeter band. In some examples, the wireless communications system 100 can support millimeter wave (mmW) communications between the UEs 115 and the base stations 105, and EHF antennas of the respective devices can be smaller and more closely spaced than UHF antennas. In some examples, this can facilitate use of antenna arrays within a device. However, propagation of EHF transmissions can be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein can be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions can differ by country or regulating body.

[0079] The wireless communications system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communications system 100 can employ License Assisted Access (LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed frequency spectrum band, such as the 5 GHz industrial, scientific and medical (ISM) band. When operating in unlicensed frequency spectrum bands, devices such as the base stations 105 and the UEs 115 can employ carrier sensing for collision detection and avoidance. In some examples, operations in unlicensed frequency spectrum bands can be based on a carrier aggregation configuration in which component carriers are operated in a licensed frequency spectrum band (e.g., LAA). Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0080] The base stations 105 or UEs 115 can be equipped with multiple antennas, which can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a base station 105 or a UE 115 can be co-located or separated by a small distance on the same board as part of an antenna array or antenna panel, which can support MIMO operations or transmit or receive beamforming, respectively. For example, one or more base station antennas or antenna arrays can be co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with a base station 105 can be located in various geographic locations. A base station 105 can have an array of antennas that have multiple rows and multiple columns of antenna ports that the base station 105 can use to support beamforming of communications to UEs 115. Similarly, a UE 115 can have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, an antenna panel can support radio frequency beamforming of signals transmitted via the antenna ports.

[0081] The base stations 105 or the UEs 115 can use MIMO communications to exploit multipath signal propagation and increase the spectral efficiency. Such techniques can be referred to as spatial multiplexing. The multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Similarly, the multiple signals can be received by the receiving device via different antennas or different combinations of antennas. Each of the multiple signals can be referred to as a spatial stream, and can carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers can be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices.

[0082] Beamforming, which can also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer a beam of energy in a specific direction, for example, to increase the power in a desired direction and reduce the power in undesired directions. When the beamformer takes the form of an array of antenna elements and a signal is transmitted from each of the antenna elements, the beamforming can be used for directional transmission. When a signal is received by an array of antenna elements, the beamforming can be used for directional reception. The beamforming can be done at a transmitting device or a receiving device. The beamforming can be done at a base station 105 or at a UE 115.

[0083] As part of the beamforming operations, the base stations 105 or the UEs 115 can use beam sweeping techniques. For example, a base station 105 can use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) can be transmitted by a base station 105 multiple times in different directions. For example, the base station 105 can transmit a signal according to different beamforming weight sets associated with different directions. Transmissions in different beam directions can be used, for example, to identify (e.g., by a transmitting device such as a base station 105, or by a receiving device such as a UE 115) a beam direction for subsequent transmits or receives by the base station 105.

[0084] Some signals (e.g., data signals associated with a particular receiving device) can be transmitted by a base station 105 in a single beam direction (e.g., a direction associated with the receiving device, such as a UE 115). In some examples, the beam direction associated with transmissions along a single beam direction can be determined based on a signal that was transmitted in one or more beam directions. For example, a UE 115 can receive one or more of the signals transmitted by the base station 105 in different directions, and can report to the base station 105 an indication of the signal it received with a highest signal quality, or an otherwise acceptable signal quality.

[0085] In some examples, transmissions by a device (e.g., by a base station 105 or a UE 115) can be performed using multiple beam directions, and the device can use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmissions (e.g., from a base station 105 to a UE 115). The UE 115 can report feedback that indicates precoding weights for one or more beam directions, and the feedback can correspond to a configured number of beams across a system bandwidth or one or more sub-bands. The base station 105 can transmit reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that can be precoded or unprecoded. The UE 115 can provide feedback for beam selection, which can be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals transmitted in one or more directions by the base station 105, a UE 115 can employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying beam directions for subsequent transmission or reception by the UE 115) or for transmitting a signal in a single direction (e.g., for transmitting data to a receiving device).

[0086] When a receiving device (e.g., a UE 115) receives various signals from a base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals, the receiving device can try multiple receive configurations (e.g., directional listening). For example, the receiving device can try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets applied individually to signal streams received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied individually to signal streams received at multiple antenna elements of an antenna array (any of which can be referred to as“listening” according to different receive configurations or receive directions). In some examples, the receiving device can use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal). The single receive configuration can be aligned in a beam direction determined based on listening according to different receive configuration directions.

[0087] Wireless communications system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP -based. A Radio Link Control (RLC) layer can perform packet segmentation and reassembly to communicate over logical channels. A Medium Access Control (MAC) layer can perform priority handling and multiplexing of logical channels into transport channels. The MAC layer can also use error detection techniques, error correction techniques, or both, to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the RRC protocol layer can provide establishment, configuration, and maintenance actions to setup, reconfigure, and release radio bearers for the user plane data. At the physical layer, transport channels can be mapped to physical channels.

[0088] The UEs 115 and the base stations 105 can support retransmissions of data to increase the likelihood that data is received correctly over the communication link 125. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly over the communication link 125. HARQ can 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, a device can support same-slot HARQ feedback, in which the device can provide HARQ feedback for data transmitted in a previous symbol in the same slot. In other cases, the device can provide HARQ feedback in a subsequent slot or according to some other time interval.

[0089] Techniques for determining whether monitoring occasions of a first SS set are linked to monitoring occasions of a second SS set when the different SS sets are in the same slot or in different slots. For example, a UE 115 can determine that PDCCH candidates in a first SS set and a second SS set are in the same slot based on a monitoring pattern for the SS sets as configured by RRC parameters (e.g., such as the monitoringSlotPeriodicityAndOffset parameter). When the two SS sets have the same periodicity and the same offset, the UE 115 can determine that the SS sets in the same slot are linked. In some examples, the duration of the monitoring pattern can also be the same. In such examples, the UE 115 can expect the same number of monitoring occasions for each SS set within a slot (e.g., the RRC parameter monitoring symbolsWithinSlot can be the same for each SS set). The UE 115 can determine that each SS set has the same number of monitoring occasions, and that a monitoring occasion with a first index value in the first SS set is linked to a monitoring occasion with the same index value in the second SS set.

[0090] In some aspects, a UE 115 of the wireless communications system 100 can be configured with up to three CORESETs within a given BWP. A CORESET can include one or more transmission configuration indicator (TCI) states for PDCCH repetition and can be associated with a number of resource blocks (RBs) in the frequency domain and a number of symbols or other TTIs (e.g., a number of OFDM symbols) in the time domain. In some aspects, a CORESET configured at a UE 115 can be associated with a CCE resource element group (CCE-REG) mapping type (e.g., a CCE-REG bundling mapping type), a precoding granularity, an identifier associated with scrambling for a PDCCH demodulation reference signal (DMRS) (e.g., a scrambling identifier), encoded bits of downlink control information (DCI) content, or any combination thereof.

[0091] In some aspects, a UE 115 can be configured with up to ten SS sets within a given BWP. In some aspects, each SS set can be associated with a given CORESET and can include a set of monitoring occasions. In some aspects, an SS set can include a set of control channel monitoring occasions (e.g., PDCCH monitoring occasions). Further, a UE 115 can be configured to determine a control channel monitoring occasion associated with a given SS set based on one or more characteristics of the SS set that can be configured at the UE 115 (e.g., preconfigured), indicated to the UE 115 via a base station 105, or both. A UE 115 can be configured with one or more different types of SS sets (e.g., searchSpaceType), including a UE-specific SS set, a common SS set, or both. Alternatively, each SS set can be associated with one or more DCI formats to monitor.

[0092] Parameters of an SS set (s) can include a periodicity (k s ) of monitoring occasions (e.g., k s slots), an offset (o s ) in slots for monitoring occasions (e.g., o s slots) (e.g., monitoringSlotPeriodicityAndOffset), a duration (T s ) indicating a number of slots within a period in which the SS set is present (where T s < k s ), or any combination thereof. A UE 115 of the wireless communications system 100 can determine a number of PDCCH monitoring occasions within a slot and a frame η f , if In some aspects, the UE 115 can be configured to monitor control channel candidates (e.g., PDCCH candidates) for SS sets s within the first k consecutive slots of a slot, and can refrain from monitoring control channel candidates for SS sets s within the next k consecutive slots. The number of control channel candidates (e.g., PDCCH candidates) can be based on an aggregation level (e.g., number of CCEs) of wireless communications at the UE 115. s In some aspects, the UE 115 can be configured to monitor control channel candidates (e.g., PDCCH candidates) for SS sets s within the first k consecutive slots of a slot, and can refrain from monitoring control channel candidates for SS sets s within the next k consecutive slots. The number of control channel candidates (e.g., PDCCH candidates) can be based on an aggregation level (e.g., number of CCEs) of wireless communications at the UE 115. s s In some aspects, the UE 115 can be configured to monitor control channel candidates (e.g., PDCCH candidates) for SS sets s within the first k consecutive slots of a slot, and can refrain from monitoring control channel candidates for SS sets s within the next k consecutive slots. The number of control channel candidates (e.g., PDCCH candidates) can be based on an aggregation level (e.g., number of CCEs) of wireless communications at the UE 115.

[0093] In some aspects, the UE 115 can be configured to monitor control channels (e.g., monitoringSymbolsWithinSlot) according to a control channel monitoring pattern (e.g., PDCCH monitoring pattern) within a slot. For example, a PDCCH monitoring pattern within a slot can indicate a first symbol of a CORESET for PDCCH monitoring within a slot. For example, in the context of a slot including fourteen symbols, a CORESET configured at the UE 115 can be associated with an SS set including three symbols, and a control channel monitoring pattern (e.g., monitoringSymbolsWithinSlot) associated with the SS set can be configured as “01000010001000”. In this example, the UE 115 can be configured to determine that there are three monitoring occasions within each slot in which the SS set is present. Further, the UE 115 can be configured to determine that the three monitoring occasions begin at the second, seventh, and eleventh symbols of each respective slot in which the SS is present.

[0094] In the context of an SFN, an SFN PDCCH transmission (e.g., PDCCH DMRS) can be associated with two TCI states. Specifically, for an SFN PDCCH transmission, one CORESET can be activated at the UE 115 with two active TCI states. In such a case, each control channel candidate (e.g., PDCCH candidate) of an SS set associated with the CORESET can be associated with the two active TCI states of the CORESET.

[0095] ​​Similarly, for a PDCCH repetition in which each PDCCH repetition includes a PDCCH candidate, two PDCCH candidates (e.g., two PDCCH repetitions) can be linked (e.g., correlated) together for a possible repetition (e.g., repetition of DCI) of the same control channel transmission. In the context of PDCCH repetition, the payloads (e.g., DCI payloads) of the two PDCCH candidates (e.g., two PDCCH repetitions) can be the same. For example, a first PDCCH candidate can be correlated or linked with a second PDCCH candidate. In this example, a first repetition of DCI can be transmitted in the first PDCCH candidate and a second repetition of DCI can be transmitted in the second PDCCH candidate, where the first and second repetitions of DCI are the same. In this example, the UE 115 can receive and / or decode only the first repetition of DCI or only the second repetition of DCI. Additionally or alternatively, the UE 115 can receive and / or decode both the first and second repetitions of DCI by performing soft combining of the first and second repetitions of DCI. In some aspects, the correlated / linked PDCCH candidates can have the same aggregation level (e.g., same number of CCEs).

[0096] In some aspects, correlated PDCCH candidates associated with respective CORESETs in different SS sets can be linked together (e.g., correlated) for PDCCH repetition. In some cases, two PDCCH candidates with the same candidate index across two correlated SS sets can be linked or correlated. In other cases, PDCCH candidates with the same starting CCE index can be linked. In some aspects, a set of correlated / linked PDCCH candidates can be configured via control signaling (e.g., RRC signaling). For example, the UE 115 can receive an RRC message indicating that a first PDCCH candidate in a first SS set is linked (e.g., correlated) with a second PDCCH candidate in a second SS set. Further, the UE 115 can be configured with a set of linked / correlated PDCCH candidates within the same slot or TTI (e.g., intra-slot PDCCH repetition), within different slots (e.g., inter-slot PDCCH repetition), or both.

[0097] In some examples, the UE 115 can determine that monitoring occasions for different SS sets are located in different slots based on a monitoring pattern (e.g., as configured for each SS set by an RRC parameter such as monitoringSlotPeriodicityAndOffset), in which two SS sets have a same periodicity but different offsets. The UE 115 can determine that one or more rules are satisfied such that a first PDCCH repetition in a first SS set is always located in an earlier slot compared to a second PDDCH repetition in a second SS set. In such examples, the UE 115 can determine that a monitoring occasion having a first index value in the first SS set is linked with a monitoring occasion having a same index value in the second SS set.

[0098] Figure 2 An example of a wireless communications system 200 that supports SS set monitoring for PDCCH repetition is shown in accordance with aspects of the present disclosure. The wireless communications system can implement aspects of the wireless communications system 100. For example, the wireless communications system 200 can include base stations 205 and UEs 215, which can be examples of the corresponding devices described with reference to Figure 1 The base stations 205 can serve one or more UEs 215 located within a coverage area for the base stations 205, which can be referred to as a cell.

[0099] In some aspects, the UE 215 can be configured with one or more CORESETs in a BWP of a serving cell. For example, the UE 215 can be configured with three, five, or some other number of CORESETs in a BWP configured by the base station 205. Generally, each CORESET can be associated with one active transmission configuration indicator (TCI) state. For example, as part of a configuration of a CORESET for the UE 215 by the base station 205, a number of resource blocks (RBs) of the CORESET in a frequency domain and a number of symbols (e.g., one, two, or three OFDM symbols) of the CORESET in a time domain can be RRC configured for the UE 215.

[0100] In some examples, wireless communications system 200 can support PDCCH monitoring in one or more SS sets. In some aspects, each SS set can be associated with one CORESET. For example, there can be up to ten SS sets in a BWP of a component carrier (CC). As part of SS set configuration, RRC signaling can be used to configure an associated CORESET, a periodicity and offset of slots to monitor, symbols to monitor within a slot in time domain, DCI formats to monitor, or a number of PDCCH candidates for a given aggregation level (AL). A PDCCH candidate can be defined as part of SS set configuration. For example, a PDCCH candidate with a given AL in a given PDCCH candidate index can be defined in a given SS set. A DCI can be transmitted in one PDCCH candidate. For example, base station 205 can configure a first SS set including multiple PDCCH monitoring occasions 210 (e.g., monitoring occasion 210-a, monitoring occasion 210-b, and monitoring occasion 210-c), and a second SS set including multiple PDCCH monitoring occasions 220 (e.g., monitoring occasion 220-a, monitoring occasion 220-b, and monitoring occasion 220-c). Each monitoring occasion can be configured with one or more PDCCH candidates (e.g., PDCCH candidates included in monitoring occasions 210, PDCCH candidates included in monitoring occasions 220, etc.).

[0101] In some examples, each SS set (e.g., a first SS set including monitoring occasions 210) can be defined by one or more parameters. For example, a first SS set can correspond to a CORESET and one or more PDCCH monitoring occasions 210. Parameters of an SS set(s) can include a periodicity (k s ) of monitoring occasions (e.g., k s 1 slots 230), an offset (o s ) in slots to monitoring occasions (e.g., o s 1 slots 230). For example, a first SS set s = 1 can have a periodicity (k1) 225 of 5 slots 230 and an offset (o1) of 0 slots 230. Base station 205 can configure SS set periodicity and offset via a RRC message (e.g., monitoringSlotPeriodicityAndOffset). An SS set can be further defined by a duration (T s ) indicating a number of slots within a period in which the SS set exists (T s <k sFor example, the first SS set s = 1 can have a duration (T1) 235 of 2 slots 230. In some examples, the base station 205 can configure the UE 215 to monitor for control signaling in the SS set by indicating a PDCCH monitoring pattern with TTIs (e.g., slots 230). For example, an RRC parameter (e.g., monitoringSymbolsWithinSlot) can indicate the first symbols of a CORESET in a slot 230 for monitoring. For example, for a CORESET with 3 symbols 240, the RRC parameter can indicate a first symbol (e.g., symbol 2 of the slot 230), a second symbol (e.g., the seventh symbol of the slot 230), and a third symbol (e.g., the eleventh symbol of the slot 230). The first indicated symbol can be the first symbol of the first monitoring occasion 210-d in the slot 230, the second symbol can be the first symbol of the second monitoring occasion 210-e in the slot 230, and the third symbol can be the first symbol of the third monitoring occasion 210-f. A bitmap for indicating such a configuration of slots 230 can be configured as “01000010001000”.

[0102] The UE 215 can monitor PDCCH candidates in various SS sets to receive one or more DCI messages. The UE 215 can determine that a PDCCH candidate has passed a cyclic redundancy check (CRC) check (e.g., the UE 215 can attempt to blindly decode each PDCCH candidate with a blind decoding attempt in which the PDCCH candidate passed a CRC check corresponding to a successfully decoded DCI). In some wireless communication systems, there can be a limit (e.g., a maximum number) of monitored PDCCH candidates that the UE 215 can attempt to blindly decode (e.g., a blind decoding limit, which can also be referred to as a maximum blind decoding count, a BD limit, a monitored PDCCH candidate limit, etc.). The blind decoding limit (BD limit) can be based on a given transmission time interval (e.g., a slot, a span, or other duration in the time domain). Thus, in any given TTI, a UE can be configured with one or more PDCCH candidates. The PDCCH candidates can correspond to different SS sets. The UE can count some or all of the PDCCH candidates towards the BD limit.

[0103] Some wireless communications systems can enable PDCCH transmissions with two active TCI states. Variations of this approach can 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 the case where one CORESET is associated with two active TCI states, base station 205 can configure one PDCCH candidate (in a given SS set) to be associated with both TCI states of the CORESET. In another approach where one CORESET can be associated with two active TCI states, base station 205 can configure two PDCCH candidate sets (in a given SS set) to be associated with the two active TCI states of the CORESET, respectively. In yet another approach where one CORESET can be associated with two active TCI states, base station 205 can configure two PDCCH candidate sets to be associated with two corresponding SS sets, where the two SS sets are associated with the CORESET and each SS set is associated with only one TCI state of the CORESET. Generally, a PDCCH candidate set can include a single or multiple PDCCH candidates, and the PDCCH candidates in a set correspond to a repetition or opportunity in which DCI can be indicated to UE 215.

[0104] The PDCCH candidate sets in the various SS sets can provide repetition-based PDCCH candidates, where each PDCCH candidate is linked to other PDCCH candidates. For example, a PDCCH candidate of a first SS set can be located in monitoring occasion 210-a and can be linked to a PDCCH candidate located in monitoring occasion 220-a of a second SS set. The PDCCH candidate of the first SS set and the PDCCH candidate of the second SS set can be located in the same slot or in different slots. In some examples, base station 205 can transmit a DCI message using PDCCH repetition on the two linked PDCCH candidates. For example, base station 205 can transmit a first repetition of a DCI message on the PDCCH candidate in the first SS set and a second repetition of the DCI message on the PDCCH candidate in the second SS set. In some examples, UE 215 can perform a soft combining procedure on the PDCCH candidates received in the first SS set and the second SS set, resulting in a soft combined PDCCH candidate. The UE can treat the soft combined PDCCH candidate as an additional monitored PDCCH candidate.

[0105] In some examples, two or more PDCCH candidates can be explicitly linked together (e.g., before the UE 215 attempts to perform blind decoding of the PDCCH candidates, the base station 205 can configure the linking to the UE 215). In some examples, two or more PDCCH candidates can not be explicitly linked together, and the UE 215 can identify or otherwise determine the linking after or before decoding. However, some wireless communications systems do not provide a mechanism or other indication regarding how one or more PDCCH candidates are counted for when monitoring is applied to blind decoding limits configured for the UE 215.

[0106] Accordingly, as described herein, monitoring occasions for different SS sets can depend on SS set configurations, including a period, an offset, a duration, and monitoring occasions within a slot (e.g., as indicated in various RRC parameters like monitoringSlotPeriodicityAndOffset, Duration, and monitoringSymbolsWithinSlot for the respective SS sets). For PDCCH repetition, when two linked PDCCH candidates are in different SS sets, the monitoring occasions of the two SS sets can also be linked because the linked PDCCH candidates are defined in a given monitoring occasion of a given SS set. Accordingly, the UE 215 can need to determine which monitoring occasions of a first SS set link to which monitoring occasions of a second SS set. In some examples, the UE 215 can identify whether monitoring occasions in different SS sets in a same TTI (e.g., slot) are linked, as described in more detail with reference to Figure 3 In some examples, the UE 215 can identify whether monitoring occasions in different SS sets in different TTIs (e.g., slots) are linked, as described in more detail with reference to Figures 4-6 In some examples, the UE 215 can identify whether monitoring occasions in different SS sets in different TTIs (e.g., slots) are linked, as described in more detail with reference to

[0107] Figure 3 An example of a timeline 300 that supports SS set monitoring for PDCCH repetition is shown, in accordance with aspects of the present disclosure. The timeline 300 can implement aspects of the wireless communications system 100 and the wireless communications system 200. For example, a base station and a UE can communicate according to the timeline 300, and the base station and the UE can be examples of the respective devices described with reference to Figure 1 and Figure 2 described with reference to

[0108] In some examples, a base station can configure a UE with multiple SS sets (e.g., an indication of two SS set indexes for a first SS set and a second SS set) within the same TTI (e.g., slot 305). The base station can configure a first monitoring occasion 315-a and a second monitoring occasion 315-b for the first SS set, and can further configure a first monitoring occasion 320-a and a second monitoring occasion 320-b for the second SS set. The UE can expect the two SS sets to be configured with the same periodicity and the same offset (e.g., the same value for monitoringSlotPeriodicityAndOffset). The first SS set and the second SS set can further have the same duration. Having the same periodicity, offset, duration, or any combination thereof can result in intra-slot PDCCH repetition.

[0109] In some examples, a UE can expect the same number of monitoring occasions within slot 305-a for both SS sets. For example, the UE can verify that there are the same number of 1s present in the RRC indication (e.g., monitoringSymbolsWithinSlot) for the first SS set as are present in the RRC indication (e.g., monitoringSymbolsWithinSlot) for the second SS set. In such examples, the UE can determine that the monitoring occasions with the same index value (j) in both SS sets are linked. For example, the first SS set can be configured with an RRC parameter monitoringSymbolsWithinSlot including two 1s (e.g., bitmap 00100001000000), which can indicate that monitoring occasion 315-a (e.g., associated with a CORESET having 2 symbols) starts during the third symbol 310 of slot 305-a, and monitoring occasion 315-b starts during the eighth symbol 310 of slot 305-a. The second SS set can be configured with an RRC parameter monitoringSymbolsWithinSlot including two 1s (bitmap 00100001000000), which can indicate that monitoring occasion 320-a (e.g., associated with a CORESET having 2 symbols) starts during the third symbol 310 of slot 305-a, and monitoring occasion 320-b starts during the eighth symbol 310 of slot 305-a. Because both bitmaps include the same number of 1s, indicating the same number of monitoring occasions, the UE can verify that the same number of monitoring occasions are present within slot 305-a. Thus, the UE can determine that monitoring occasion 315-a of the first SS set is linked with monitoring occasion 320-a of the second SS set (e.g., the first monitoring occasion of each SS set has the same index value), and can determine that monitoring occasion 315-b of the first SS set is linked with monitoring occasion 320-b of the second SS set (e.g., the second monitoring occasion of each SS set has the same index value). The respective PDCCH candidates in the linked monitoring occasions can be linked to each other for PDCCH repetition.

[0110] Similarly, even if the TTI boundaries (e.g., symbol boundaries) of the monitoring occasions are not aligned, the UE can determine that the monitoring occasions of different SS sets are linked based on verifying the number of monitoring occasions within a TTI. For example, in slot 305-b, the UE can verify that there are the same number of 1s present in the RRC indication (e.g., monitoringSymbolsWithinSlot) for the first SS set as are present in the RRC indication (e.g., monitoringSymbolsWithinSlot) for the second SS set. The first SS set can be configured with an RRC parameter monitoringSymbolsWithinSlot that includes two 1s (e.g., bitmap 00100001000000), which can indicate that a monitoring occasion 325-a (e.g., associated with a CORESET having 2 symbols) starts during the third symbol 310 of slot 305-a, and a monitoring occasion 325-b starts during the eighth symbol 310 of slot 305-b. The second SS set can be configured with an RRC parameter monitoringSymbolsWithinSlot that includes two 1s (bitmap 10000000010000), which can indicate that a monitoring occasion 330-a (e.g., associated with a CORESET having 2 symbols) starts during the first symbol 310 of slot 305-b, and a monitoring occasion 330-b starts during the tenth symbol 310 of slot 305-b. Because both bitmaps include the same number of 1s, indicating the same number of monitoring occasions, the UE can verify that there are the same number of monitoring occasions within slot 305-b. Accordingly, the UE can determine that the monitoring occasion 325-a of the first SS set is linked with the monitoring occasion 330-a of the second SS set (e.g., the first monitoring occasion of each SS set has the same index value), and can determine that the monitoring occasion 325-b of the first SS set is linked with the monitoring occasion 330-b of the second SS set (e.g., the second monitoring occasion of each SS set has the same index value). The respective PDCCH candidates in the linked monitoring occasions can be linked to each other for PDCCH repetition.

[0111] Accordingly, in a slot 305 in which both SS sets are present, the j-th monitoring occasion of the first SS set can be linked with the j-th monitoring occasion of the second SS set. A first repetition of a control message (e.g., a DCI message) can be received in a first PDCCH candidate in a first monitoring occasion (e.g., monitoring occasion 325-a) of the first SS set, and a second repetition of the control message (e.g., a DCI message) can be received in a first PDCCH candidate (e.g., linked with the first PDDCH candidate in monitoring occasion 325-a) in a first monitoring occasion (e.g., monitoring occasion 330-a) of the second SS set. The UE can soft combine the DCI received in the first PDCCH candidate in the first SS set with the DCI received in the first PDDCH candidate in the second SS set.

[0112] In some examples, the UE can determine which monitoring occasions of different SS sets located in different TTIs are linked, as described in reference to FIG. 3. Figures 4-6 In some examples, the UE can determine which monitoring occasions of different SS sets located in different TTIs are linked, as described in reference to FIG. 3.

[0113] Figure 4 An example of a timeline 400 that supports SS set monitoring for PDCCH repetition is shown, in accordance with aspects of the present disclosure. The timeline 400 can implement aspects of the wireless communications system 100 and the wireless communications system 200. For example, a base station and a UE can communicate according to the timeline 400, and the base station and the UE can be examples of the respective devices described in reference to FIGS. 1-3. Figure 1 and Figure 2 described in reference to FIGS. 1-3.

[0114] In some examples, a base station can configure a UE with a first SS set and a second SS set. The first SS set and the second SS set can have a same periodicity k s but can have different offset values (e.g., o s,1 for the first SS set and o s,2 for the second SS set). If the UE can support inter-slot PDCCH repetition in consecutive slots, the base station can configure the offsets of the two SS sets such that the periodicity and the two offset values (o s,2 -o s,1 ) mod k s = 1.

[0115] A base station can configure a UE with a pair of SS set indices for inter-slot PDCCH repetition. The UE can expect that the two SS sets are configured with a same periodicity greater than one slot (e.g., k s > 1) but with different offsets (e.g., o s,1 and o s,2). In such examples, if one or more rules or conditions are satisfied, a first slot including a monitoring occasion for a first SS set (e.g., a slot with slot number f,1 of a frame with SCS scheme m, a number of slots per frame such that may be linked with a second slot including a monitoring occasion for a second SS set (e.g., a slot with slot number and frame number n f,2 .

[0116] The UE can determine that one or more rules are satisfied such that a first PDCCH repetition in a first SS set is located earlier in time (e.g., in an earlier TTI) than a second PDCCH repetition in a second SS set. For example, the UE can verify that a first condition is satisfied, where if then In some examples, the UE can verify that a second condition is satisfied, where The UE can apply one of these conditions, two of these conditions, or additional conditions. Verifying that such conditions or rules are satisfied can result in a first repetition of a first SS set being located before a second repetition of a second SS set.

[0117] For example, a base station can configure a UE with a first SS set s = 1 and a second SS set s = 2, where k s = 5, o s,1 = 1, o s,2 = 3, and assuming a SCS of 30 kHz and a number of slots per frame Slot 405-a can include a monitoring occasion for the first SS set, and can have a slot number of 16. Thus, Slot 410-b, which is located two slots later than slot 405-a, can include a monitoring occasion for the second SS set, and can have a slot number of 18. Thus, The UE can determine that the monitoring occasion for the first SS set located in slot 405-a is linked with the monitoring occasion for the second SS set located in slot 410-b, and similarly, determine that the monitoring occasion in slot 405-b is linked with the monitoring occasion in slot 410-c. By applying one or more conditions described herein, the UE can ensure that a first repetition of a DCI message is located earlier in time than a second repetition of the DCI message (e.g., slot 405-a carrying the first repetition is linked with slot 410-b carrying the second repetition, rather than slot 410-a carrying the second repetition being earlier than slot 405-a). ​

[0118] In some examples, a base station can configure a UE with a first SS set s = 1 and a second SS set s = 2, where k s = 5, o s,1 = 4, o s,2 = 0, and assuming an SCS of 30 kHz and a number of slots per frame Slot 415-a can include a monitoring occasion of the first SS set, and can have a slot number of 19. Thus, Slot 420-b, which is one slot later than slot 415-a, can include a monitoring occasion of the second SS set, and can have a slot number of 0 (e.g., the first slot of the next frame). Thus, The UE can determine that the monitoring occasion of the first SS set located in slot 415-a is linked with the monitoring occasion of the second SS set located in slot 420-b. By applying one or more conditions described herein, the UE can ensure that the first repetition of the DCI message is located in time earlier than the second repetition of the DCI message (e.g., slot 415-a, which carries the first repetition, is linked with slot 420-b, which carries the second repetition, rather than slot 420-a, which carries the second repetition, is earlier than slot 415-a). This pattern can be repeated for subsequent slots. For example, the UE can determine that the monitoring occasion of the first SS set located in slot 415-b is linked with the monitoring occasion of the second SS set located in slot 420-c.

[0119] In some examples, determining the order of the SS sets can affect the application of the conditions or determining the link between monitoring occasions, or both. For example, the second SS set can be ordered before the first SS set, such that the monitoring occasion in the second SS set carries the first repetition of the PDCCH message, and the monitoring occasion of the second SS set carries the second repetition of the DCI message. In such examples, the UE can verify that one or more rules are satisfied, and can determine, for example, that slot 410-a of the second SS set is linked to slot 405-a, and slot 410-b is linked to slot 405-b.

[0120] In some examples, the UE can determine which of the two SS sets precedes or takes priority over the other SS set. For example, the UE can order the two SS sets based on a configuration by the base station. In such examples, the base station can transmit a configuration message to the UE indicating, for example, that the first SS set precedes (e.g., is prioritized over) the first (e.g., SS set 1) and the second SS set precedes (e.g., is prioritized over) the second (e.g., SS set 2). The configuration message can indicate that the first SS set with an index value of 4 and the second SS set with an index value of 2 are linked, and can further indicate that the first SS set (e.g., index value 4) precedes the second SS set (e.g., index value 2). In some examples, the UE can determine the ordering of linked SS sets implicitly. For example, the UE can determine which SS set has a higher or lower index value (e.g., according to one or more preconfigured, standardized, or configured rules). In such examples, where the first SS set with an index value of 4 and the second SS set with an index value of 2 are linked, the UE can determine that the SS set with the lower index value (e.g., the second SS set with index value 2) can precede the first SS set (e.g., with the higher index value 4). If the order of the SS sets changes, the linked slots for PDCCH repetition can change, as described herein.

[0121] Inter-slot repetition in the case of consecutive slots is described in reference to Figure 5 which is more fully described.

[0122] Figure 5 An example of a timeline 500 that supports SS set monitoring for PDCCH repetition is shown in accordance with aspects of the present disclosure. The timeline 500 can implement aspects of the wireless communications system 100 and the wireless communications system 200. For example, a base station and a UE can communicate in accordance with the timeline 500, and the base station and the UE can be examples of the respective devices described in reference to Figure 1 and Figure 2 which are more fully described.

[0123] In some examples, with respect to the duration of the SS sets, the UE can expect the SS sets to only exist in one slot within a time period (e.g., the two SS sets are configured with a duration T s = 1), or the base station can not configure a value and the UE can assume a one-slot duration. For example, a one-slot duration (whether configured or assumed) is shown and described in reference to Figure 4 which is more fully described.

[0124] In some examples, the duration can be longer than one slot, but the duration can be the same for each SS set, as described in reference to Figure 5 which is more fully described. For example, the first SS set can have a T s= 3. In such examples, the UE can determine a link between the first slot of the period of the SS set and the first slot of the period of the second SS set, and can assume that the remaining slots of these durations are mapped 1 : 1. For example, slot 505-a can be T s = 3, where k s = 5. Slot 505-a can include a monitoring occasion for the first SS set, and slot 510-a can include a monitoring occasion for the second SS set. Slot 505-a can have slot number 16, so slot 510-a can have slot number 18 (e.g., in the same frame), so Thus, by applying one or more rules described with reference to Figure 4 the UE can determine that slot 505-a is linked with slot 510-a, and that each PDCCH candidate of the monitoring period of the first SS set in slot 505-a is linked with a corresponding PDCCH candidate of the monitoring period of the second SS set in slot 510-a. Given that T s = 3, the UE can determine that the second slot 505-b of the same duration is linked with the second slot 510-b, and that the third slot 505-c of the same duration is linked with the third slot 510-c.

[0125] In some examples, the UE can be configured for contiguous inter-slot repetition, and can be configured with an offset value such that (o s,2 - o s,1 ) mod k s = 1.

[0126] In some examples, there can be multiple monitoring occasions within linked slots, as described in more detail with reference to Figure 6 .

[0127] Figure 6 An example of a timeline 600 that supports SS set monitoring for PDCCH repetition is shown, in accordance with aspects of the present disclosure. The timeline 600 can implement aspects of the wireless communications system 100 and the wireless communications system 200. For example, a base station and a UE can communicate according to the timeline 500, and the base station and the UE can be examples of the respective devices described with reference to Figure 1 and Figure 2 .

[0128] A base station can configure one or more monitoring occasions within a single slot (e.g., via an RRC parameter monitoringSymbolsWithinSlot). In some examples, for the case of inter-slot PDCCH repetition, the number of monitoring occasions in each slot can equal one (e.g., the number of 1s in the bitmap of the RRC parameter monitoringSymbolsWithinSlot can equal 1 for both SS sets), in which case the UE can determine that a single monitoring occasion within a first slot of a first SS set is linked to the only monitoring occasion in a linked slot of a second SS set. In some examples, based on the linking of slots as described with reference to Figure 4 and Figure 5 In some cases, a base station can be limited to configuring no more than one monitoring occasion per slot of a linked SS set in different slots.

[0129] In some examples, a base station can be allowed to configure more than one monitoring occasion in each linked slot of two SS sets. The UE can expect the same number of monitoring occasions within a linked slot for both SS sets (e.g., can expect the same number of 1s in the bitmap of the RRC parameter monitoringSymbolsWithinSlot). In linked slots 605-a and 605-c, in which both SS sets are present, the jthmonitoring occasion of the first SS set in the first slot 605-a (e.g., slot ) can be linked to the jthmonitoring occasion of the second SS set in the second slot 605-c (e.g., ), in which and are two different slots determined according to the rules described with reference to Figure 4 The first repetition of a control message (e.g., a DCI message) can be received in a first PDCCH candidate in the first monitoring occasion of the first SS set (e.g., monitoring occasion 610-a), and the second repetition of the control message (e.g., a DCI message) can be received in a (e.g., linked to the first PDDCH candidate in monitoring occasion 610-a) first PDCCH candidate in the first monitoring occasion of the second SS set (e.g., monitoring occasion 615-a). The UE can soft combine the DCI received in the first PDCCH candidate in the first SS set with the DCI received in the first PDDCH candidate in the second SS set.

[0130] In some examples, the UE can determine that slot 605-a is linked to slot 605-c (e.g., using the rules described with reference to Figure 4 and Figure 5The description one or more rules). The monitoring occasions 610-a and 610-b of the first SS set can be located in the slot 605-a, and the monitoring occasions 615-a and 615-b of the second SS set can be located in the slot 605-c. The UE can expect the same number of monitoring occasions within the slot 605-a for both SS sets. For example, the UE can verify that there are the same number of ones in the RRC indication (e.g., monitoringSymbolsWithinSlot) for the first SS set as there are in the RRC indication (e.g., monitoringSymbolsWithinSlot) for the second SS set. In such an example, the UE can determine that the monitoring occasions with the same index value (j) in both SS sets are linked.

[0131] For example, the first SS set can be configured with an RRC parameter monitoringSymbolsWithinSlot including two ones (e.g., bitmap 00100001000000), which can indicate that the monitoring occasion 610-a (e.g., associated with a CORESET having 2 symbols 620) starts during the third symbol 620 of the slot 605-a, and the monitoring occasion 610-b starts during the eighth symbol 620 of the slot 605-a. The second SS set can be configured with an RRC parameter monitoringSymbolsWithinSlot including two ones (bitmap 10000000001000), which can indicate that the monitoring occasion 615-a (e.g., associated with a CORESET having 2 symbols) starts during the first symbol 620 of the slot 605-a, and the monitoring occasion 615-b starts during the eleventh symbol 620 of the slot 605-c. Because both bitmaps include the same number of ones, indicating the same number of monitoring occasions, the UE can verify that the same number of monitoring occasions are present within the slot 605-a and the slot 605-b. Thus, the UE can determine that the monitoring occasion 615-a of the first SS set is linked with the monitoring occasion 615-a of the second SS set (e.g., the first monitoring occasion of each SS set has the same index value), and can determine that the monitoring occasion 610-b of the first SS set is linked with the monitoring occasion 615-b of the second SS set (e.g., the second monitoring occasion of each SS set has the same index value). The respective PDCCH candidates in the linked monitoring occasions can be linked to each other for PDCCH repetition.

[0132] In linked slots 605-a and 605-c, where two SS sets are present, the jthmonitoring occasion of the first SS set can be linked with the jthmonitoring occasion of the second SS set. A first repetition of a control message (e.g., a DCI message) can be received in a first PDCCH candidate in a first monitoring occasion (e.g., monitoring occasion 325-a) of the first SS set, and a second repetition of the control message (e.g., a DCI message) can be received in a first PDCCH candidate (e.g., linked with the first PDDCH candidate in monitoring occasion 325-a) in a first monitoring occasion (e.g., monitoring occasion 330-a) of the second SS set. The UE can soft combine the DCI received in the first PDCCH candidate in the first SS set with the DCI received in the first PDDCH candidate in the second SS set.

[0133] Figure 7 A block diagram 700 of a device 705 that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown. The device 705 can be an example of aspects of a UE 115 as described herein. The device 705 can include a receiver 710, a transmitter 715, and a communications manager 720. The device 705 can also include a processor. Each of these components can be in communication with one another (e.g., via one or more buses).

[0134] The receiver 710 can provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to SS set monitoring for PDCCH repetition). Information can be passed on to other components of the device 705. The receiver 710 can utilize a single antenna or a set of multiple antennas.

[0135] The transmitter 715 can provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 can transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to SS set monitoring for PDCCH repetition). In some examples, the transmitter 715 can be collocated with the receiver 710 in a transceiver module. The transmitter 715 can utilize a single antenna or a set of multiple antennas.

[0136] The communications manager 720, the receiver 710, the transmitter 715, or various combinations thereof or various components thereof can be examples of means for performing various aspects of SS set monitoring for PDCCH repetition as described herein. For example, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof can support a method for performing one or more of the functions described herein.

[0137] In some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof can be implemented in hardware (e.g., in communications management circuitry), software (e.g., executed by a processor), or any combination thereof. The hardware can 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, a discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure. The processor can be a component of a processing system, a component of a processor, or a component of a controller in some examples.

[0138] Additionally or alternatively, in some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof can be implemented in hardware, software (e.g., executed by a processor), or any combination thereof. If implemented in software, the functions of the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof can be performed by a general-purpose processor, a DSP, a central processing unit (CPU), a graphics processing unit (GPU), an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting the units described in the present disclosure).

[0139] In some examples, the communications manager 720 can be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the receiver 710, the transmitter 715, or both. For example, the communications manager 720 can receive information from the receiver 710, transmit information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both to receive information, transmit information, or perform various other operations as described herein.

[0140] The communications manager 720 can support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager 720 can be configured as or otherwise support a means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a transmission time interval and a second monitoring pattern for a second set of SSs within the transmission time interval. The communications manager 720 can be configured as or otherwise support a means for receiving, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition. The communications manager 720 can be configured as or otherwise support a means for monitoring the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

[0141] Additionally, or alternatively, the communications manager 720 can support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager 720 can be configured as or otherwise support a means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a first transmission time interval and a second monitoring pattern for a second set of SSs within a second transmission time interval. The communications manager 720 can be configured as or otherwise support a means for receiving, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition. The communications manager 720 can be configured as or otherwise support a means for monitoring the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first set of SSs and the second set of SSs having a same periodicity but different offsets.

[0142] By including or configuring the communications manager 720 in accordance with examples as described herein, the device 705 (e.g., a processor used to control or otherwise coupled to the receiver 710, the transmitter 715, the communications manager 720, or a combination thereof) can support techniques for PDCCH repetition, leading to more efficient use of available resources, improved PDCCH repetition functionality, more efficient use of computational resources at a device, and the like.

[0143] Figure 8FIG. 8 shows a block diagram of a device 805 that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure. The device 805 can be an example of aspects of a device 705 or a UE 115 as described herein. The device 805 can include a receiver 810, a transmitter 815, and a communications manager 820. The device 805 can also include a processor. Each of these components can be in communication with one another (e.g., via one or more buses).

[0144] The receiver 810 can provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to SS set monitoring for PDCCH repetition). Information can be passed on to other components of the device 805. The receiver 810 can utilize a single antenna or a set of multiple antennas.

[0145] The transmitter 815 can provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 can transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to SS set monitoring for PDCCH repetition). In some examples, the transmitter 815 can be collocated with the receiver 810 in a transceiver module. The transmitter 815 can utilize a single antenna or a set of multiple antennas.

[0146] The device 805 or its various components can be an example of means for performing various aspects of SS set monitoring for PDCCH repetition as described herein. For example, the communications manager 820 can include a configuration information manager 825, a repetition manager 830, a monitoring manager 835, an SS set linking manager 840, or any combination thereof. The communications manager 820 can be an example of aspects of the communications manager 720 as described herein. In some examples, the communications manager 820 or various components thereof can be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or in cooperation with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 can receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both, to receive information, send information, or perform various other operations as described herein.

[0147] The communications manager 820 can support wireless communication at a UE in accordance with examples as disclosed herein. The configuration information manager 825 can be configured as or otherwise support a means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a transmission time interval and a second monitoring pattern for a second set of SSs within the transmission time interval. The repetition manager 830 can be configured as or otherwise support a means for receiving, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition. The monitoring manager 835 can be configured as or otherwise support a means for monitoring the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

[0148] Additionally or alternatively, the communications manager 820 can support wireless communication at a UE in accordance with examples as disclosed herein. The configuration information manager 825 can be configured as or otherwise support a means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a first transmission time interval and a second monitoring pattern for a second set of SSs within a second transmission time interval. The SS set linking manager 840 can be configured as or otherwise support a means for receiving, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition. The monitoring manager 835 can be configured as or otherwise support a means for monitoring the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first set of SSs and the second set of SSs having a same periodicity but different offsets.

[0149] Figure 9 FIG. 9 shows a block diagram 900 of a communications manager 920 that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure. The communications manager 920 can be an example of aspects of a communications manager 720, a communications manager 820, or both. The communications manager 920, or various components thereof, can be an example of means for performing various aspects of SS set monitoring for PDCCH repetition as described herein. For example, the communications manager 920 can include a configuration information manager 925, a repetition manager 930, a monitoring manager 935, a SS set linking manager 940, a linking rules manager 945, a SS set ordering manager 950, or any combination thereof. Each of these components can communicate, directly or indirectly, with one another (e.g., via one or more buses).

[0150] The communications manager 920 can support wireless communication at a UE in accordance with examples as disclosed herein. The configuration information manager 925 can be configured as or otherwise support a means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a transmission time interval and a second monitoring pattern for a second set of SSs within the transmission time interval. The repetition manager 930 can be configured as or otherwise support a means for receiving, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition. The monitoring manager 935 can be configured as or otherwise support a means for monitoring the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

[0151] In some examples, the SS set linking manager 940 can be configured as or otherwise support a means for verifying that a number of monitoring occasions of the first monitoring pattern is the same as a number of monitoring occasions of the second monitoring pattern, where monitoring the first set of downlink control channel candidates and the second set of downlink control channel candidates is further based on the verifying.

[0152] In some examples, the SS set linking manager 940 can be configured as or otherwise support a means for determining, based on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that the monitoring occasions from each of the first SS and the second SS are linked based on a time ordering of the monitoring occasions within the first SS and the second SS, respectively.

[0153] In some examples, the SS set linking manager 940 can be configured as or otherwise support a means for determining, based on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that the monitoring occasions from each of the first SS and the second SS are linked based on an order of index values associated with the monitoring occasions within the first SS and the second SS, respectively.

[0154] In some examples, the SS set linking manager 940 can be configured as or otherwise support a means for determining, based on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that a first monitoring occasion of the first set of SSs is linked with a second monitoring occasion of the second set of SSs.

[0155] In some examples, the SS set linking manager 940 can be configured as or otherwise support a means for determining that a first downlink control channel candidate, of a first group of downlink control channel candidates located in a first monitoring occasion, is linked with a second downlink control channel candidate, of a second group of downlink control channel candidates located in a second monitoring occasion, based on determining that the first monitoring occasion is linked with the second monitoring occasion.

[0156] In some examples, the repetition manager 930 can be configured as or otherwise support a means for receiving, based on the monitoring, a first repetition of the downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate. In some examples, the repetition manager 930 can be configured as or otherwise support a means for combining the first repetition of the downlink control message and the second repetition of the downlink control message.

[0157] In some examples, the SS set linking manager 940 can be configured as or otherwise support a means for verifying that a duration of the first SS set within a period of the monitoring pattern is the same as a duration of the second SS set within the period of the monitoring pattern, where monitoring the first group of downlink control channel candidates and the second group of downlink control channel candidates is further based on the verifying.

[0158] Additionally, or alternatively, the communication manager 920 can support wireless communication at a UE in accordance with examples as disclosed herein. In some examples, the configuration information manager 925 can be configured as or otherwise support a means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first SS set within a first transmission time interval and a second monitoring pattern for a second SS set within a second transmission time interval. The SS set linking manager 940 can be configured as or otherwise support a means for receiving, from the base station, an indication that a first group of downlink control channel candidates in the first SS set is linked with a second group of downlink control channel candidates in the second SS set for downlink control channel repetition. In some examples, the monitoring manager 935 can be configured as or otherwise support a means for monitoring the first group of downlink control channel candidates of the first SS set and the second group of downlink control channel candidates of the second SS set based on the first SS set and the second SS set having a same periodicity but different offsets.

[0159] In some examples, the linking rule manager 945 can be configured as or otherwise support a means for comparing the first monitoring pattern and the second monitoring pattern to determine whether a set of one or more rules is satisfied. In some examples, the linking rule manager 945 can be configured as or otherwise support a means for determining, based on the set of one or more rules being satisfied, that a first downlink control channel candidate of the first group of downlink control channel candidates is linked with a second downlink control channel candidate of the second group of downlink control channel candidates.

[0160] In some examples, the linking rule manager 945 can be configured as or otherwise support a means for determining that the set of one or more rules is satisfied based at least in part on: a first slot number of the first transmission time interval, a first frame number associated with the first transmission time interval, a first offset of the first SS set, a second slot number of the second transmission time interval, a second frame number associated with the second transmission time interval, a second offset of the second SS set, or any combination thereof, where the second frame number multiplied by a number of slots per frame plus the second slot number of the slots is greater than the first frame number multiplied by the number of slots per frame plus the second slot number, which is greater than the second frame number multiplied by a number of frames per slot plus the second slot number minus a period of a same periodicity of the first SS set and the second SS set.

[0161] In some examples, the SS set ordering manager 950 can be configured as or otherwise support a means for ordering the first SS set and the second SS set, where determining that the set of one or more rules is satisfied is based on ordering the first SS set and the second SS set.

[0162] In some examples, the SS set ordering manager 950 can be configured as or otherwise support a means for receiving, from a base station, an indication that the first SS set is ordered before the second SS set.

[0163] In some examples, the SS set ordering manager 950 can be configured as or otherwise support a means for identifying a first index for the first SS set and a second index for the second SS set, where comparing the first monitoring pattern and the second monitoring pattern includes comparing the first index to the second index.

[0164] In some examples, the repetition manager 930 can be configured as or otherwise support a means for receiving a first repetition of a downlink control message on a first downlink control channel candidate and a second repetition of the downlink control message on a second downlink control channel candidate based on satisfying one or more rules. In some examples, the repetition manager 930 can be configured as or otherwise support a means for combining the first repetition of the downlink control message and the second repetition of the downlink control message.

[0165] In some examples, the linkage rule manager 945 can be configured as or otherwise support a means for determining that the first transmission time interval is located before the second transmission time interval based on determining whether one or more rules are satisfied.

[0166] In some examples, a duration of the first set of SSs within the period of the monitoring mode is the same as a duration of the second set of SSs within the period of the monitoring mode.

[0167] In some examples, the duration includes a transmission time interval.

[0168] In some examples, the duration includes a set of consecutive transmission time intervals.

[0169] In some examples, the SS set linkage manager 940 can be configured as or otherwise support a means for verifying that a number of monitoring occasions of a first monitoring mode is the same as a number of monitoring occasions of a second monitoring mode. In some examples, the SS set linkage manager 940 can be configured as or otherwise support a means for determining that a first monitoring occasion of a first set of SSs is linked with a second monitoring occasion of a second set of SSs based on verifying that the first monitoring mode and the second monitoring mode have the same number of monitoring occasions. In some examples, the SS set linkage manager 940 can be configured as or otherwise support a means for determining that a first downlink control channel candidate of a first group of downlink control channel candidates is linked with a second downlink control channel candidate of a second group of downlink control channel candidates based on determining that the first monitoring occasion is linked with the second monitoring occasion.

[0170] In some examples, the repetition manager 930 can be configured as or otherwise support a means for receiving a first repetition of a downlink control message on a first downlink control channel candidate and a second repetition of the downlink control message on a second downlink control channel candidate based on monitoring. In some examples, the repetition manager 930 can be configured as or otherwise support a means for combining the first repetition of the downlink control message and the second repetition of the downlink control message.

[0171] Figure 10A diagram illustrating a system 1000 including a device 1005 that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown. The device 1005 can be an example of or include the components of device 705, device 805, or a UE 115 as described herein. The device 1005 can communicate wirelessly with one or more base stations 105, UEs 115, or any combination thereof, using the components described herein. The device 1005 can include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1020, an input / output (I / O) controller 1010, a transceiver 1015, an antenna 1025, memory 1030, code 1035, and a processor 1040. These components can be coupled by one or more buses, e.g., bus 1045, or can be otherwise coupled by one or more buses, e.g., bus 1045 (e.g., operatively, communicatively, functionally, electronically, electrically).

[0172] The I / O controller 1010 can manage input and output signals for the device 1005. The I / O controller 1010 can also manage peripherals not integrated into the device 1005. In some cases, the I / O controller 1010 can represent a physical connection or port to the The I / O controller 1010 can utilize an operating system such as the

[0173] In some cases, the device 1005 can include a single antenna 1025. However, in some other cases the device 1005 can have more than one antenna 1025, which can be capable of concurrently sending or receiving multiple wireless transmissions. The transceiver 1015 can communicate bi-directionally, via one or more antennas 1025, wired, or wireless links as described herein. For example, the transceiver 1015 can represent a wireless transceiver and can communicate bi-directionally with another wireless transceiver. The transceiver 1015 can also include a modem to modulate the packets to provide modem output to one or more antennas 1025 for transmission, and to demodulate packets received from one or more antennas 1025. The transceiver 1015, or transceiver 1015 and one or more antennas 1025, can be an example of a transmitter 715, transmitter 815, receiver 710, receiver 810, or any combination thereof, or component thereof, as described herein.

[0174] The memory 1030 can include random access memory (RAM) and read-only memory (ROM). The memory 1030 can store computer-readable, computer-executable code 1035 including instructions that, when executed by the processor 1040, cause the device 1005 to perform various functions described herein. The code 1035 can be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 1035 can not be directly executable by the processor 1040 but can cause a computer (e.g., when compiled and executed) to perform functions described herein. The memory 1030 can also include, in some cases, data 1032 or other information that can be obtained, used, or created during the execution of the code 1035. In some cases, the memory 1030 can further include a basic I / O system (BIOS), which can control basic hardware or software operation such as the interaction with peripheral components or devices.

[0175] The processor 1040 can 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 1040 can be configured to operate a memory array. In some other cases, a memory controller can be integrated into the processor 1040. The processor 1040 can be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1030) to cause the device 1005 to perform various functions (e.g., functions or tasks for supporting SS set monitoring for PDCCH repetition). For example, the device 1005 or a component of the device 1005 can include the processor 1040 and the memory 1030 coupled to the processor 1040, which can be configured to perform various functions described herein.

[0176] The communications manager 1020 can support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager 1020 can be configured as or otherwise support a means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a transmission time interval and a second monitoring pattern for a second set of SSs within the transmission time interval. The communications manager 1020 can be configured as or otherwise support a means for receiving, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition. The communications manager 1020 can be configured as or otherwise support a means for monitoring the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

[0177] Additionally or alternatively, the communications manager 1020 can support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager 1020 can be configured as or otherwise support a means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a first transmission time interval and a second monitoring pattern for a second set of SSs within a second transmission time interval. The communications manager 1020 can be configured as or otherwise support a means for receiving, from the base station, an indication that a first set of downlink control channel candidates in the first set of SSs are linked with a second set of downlink control channel candidates in the second set of SSs for downlink control channel repetition. The communications manager 1020 can be configured as or otherwise support a means for monitoring the first set of downlink control channel candidates of the first set of SSs and the second set of downlink control channel candidates of the second set of SSs based on the first set of SSs and the second set of SSs having a same periodicity but different offsets.

[0178] By including or configuring the communications manager 1020 in accordance with examples as described herein, the device 1005 can support techniques for PDCCH repetition, leading to more efficient use of available resources, improved PDCCH repetition functionality, more efficient use of computing resources at the device, and the like.

[0179] In some examples, the communication manager 1020 can be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1015, the one or more antennas 1025, or any combination thereof. Although the communication manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1020 can be supported by or performed by the processor 1040, the memory 1030, the code 1035, or any combination thereof. For example, the code 1035 can include instructions executable by the processor 1040 to cause the device 1005 to perform various aspects of SS set monitoring for PDCCH repetition as described herein, or the processor 1040 and the memory 1030 can be otherwise configured to support or perform such operations.

[0180] Figure 11 Operations of the method 1100 can be implemented by a UE or its components as described herein. For example, the operations of the method 1100 can be performed by a UE 115 as described with reference to FIG. 1. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Figures 1 to 10 The operations of method 1200 can be implemented by a UE or its components as described herein. For example, the operations of method 1200 can be performed by a UE 115 as described with reference to FIG. 1. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware.

[0181] At 1105, the method can include receiving, from a base station, a configuration indicating a first monitoring pattern for a first SS set within a transmission time interval and a second monitoring pattern for a second SS set within the transmission time interval. The operations of 1105 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1105 can be performed by a configuration information manager 925 as described with reference to FIG. 9.

[0182] At 1110, the method can include receiving, from a base station, an indication that a first set of downlink control channel candidates in the first SS set are linked with a second set of downlink control channel candidates in the second SS set for downlink control channel repetition. The operations of 1110 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1110 can be performed by a repetition manager 930 as described with reference to FIG. 9.

[0183] At 1115, the method can include monitoring the first set of downlink control channel candidates of the first SS set and the second set of downlink control channel candidates of the second SS set based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset. The operations of 1115 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1115 can be performed by a monitoring manager 935 as described with reference to FIG. 9.

[0184] Figure 12 A flow diagram illustrating a method 1200 that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown. The operations of method 1200 can be implemented by a UE or its components as described herein. For example, the operations of method 1200 can be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Figures 1 to 10 The operations of method 1200 can be performed by a UE or its components as described with reference to FIGs. 1 through 9. Additionally or alternatively, the UE can perform aspects of the functions described with reference to FIGs. 1 through 9 using or otherwise in service with special-purpose hardware.

[0185] At 1205, the method can include receiving, from a base station, a configuration indicating a first monitoring pattern for a first SS set within a transmission time interval and a second monitoring pattern for a second SS set within the transmission time interval. The operations of 1205 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1205 can be performed by a configuration information manager 925 as described with reference to FIG. 9.

[0186] At 1210, the method can include receiving, from the base station, an indication that a first set of downlink control channel candidates in the first SS set are linked with a second set of downlink control channel candidates in the second SS set for downlink control channel repetition. The operations of 1210 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1210 can be performed by a repetition manager 930 as described with reference to FIG. 9.

[0187] At 1215, the method can include verifying that a number of monitoring occasions of the first monitoring pattern is the same as a number of monitoring occasions of the second monitoring pattern, where monitoring the first set of downlink control channel candidates and the second set of downlink control channel candidates is further based on the verifying. The operations of 1215 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1215 can be performed by a SS set linking manager 940 as described with reference to FIG. 9.

[0188] At 1220, the method can include determining that the first monitoring occasion of the first SS set is linked with the second monitoring occasion of the second SS set based on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions. The operations of 1220 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1220 can be performed by an SS set linking manager 940 as described with reference to FIG. 9.

[0189] At 1225, the method can include monitoring a first set of downlink control channel candidates of the first SS set and a second set of downlink control channel candidates of the second SS set based on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset. The operations of 1225 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1225 can be performed by a monitoring manager 935 as described with reference to FIG. 9.

[0190] Figure 13 A flow diagram illustrating a method 1300 that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown. The operations of method 1300 can be implemented by a UE or its components as described herein. For example, the operations of method 1300 can be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Figures 1 to 10 The operations of method 1300 can be performed by a UE configured as described herein. Additionally or alternatively, the operations of method 1300 can be performed by a processor or processors of a UE configured as described herein.

[0191] At 1305, the method can include receiving, from a base station, a configuration indicating a first monitoring pattern for a first SS set within a first transmission time interval and a second monitoring pattern for a second SS set within a second transmission time interval. The operations of 1305 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1305 can be performed by a configuration information manager 925 as described with reference to FIG. 9.

[0192] At 1310, the method can include receiving, from a base station, an indication that a first set of downlink control channel candidates in a first SS set are linked with a second set of downlink control channel candidates in a second SS set for downlink control channel repetition. The operations of 1310 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1310 can be performed by an SS set linking manager 940 as described with reference to FIG. 9.

[0193] At 1315, the method can include monitoring a first set of downlink control channel candidates of the first SS set and a second set of downlink control channel candidates of the second SS set based on the first SS set and the second SS set having a same periodicity but different offsets. The operations of 1315 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1315 can be performed by a monitoring manager 935 as described with reference to FIG. 9.

[0194] Figure 14 A flow diagram illustrating a method 1400 that supports SS set monitoring for PDCCH repetition in accordance with aspects of the present disclosure is shown. The operations of method 1400 can be implemented by a UE or its components as described herein. For example, the operations of method 1400 can be performed by a UE 115 as described with reference to FIGs. 1 through 3. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Figures 1 to 10 The operations of method 1400 can be performed by a UE or its components as described herein. For example, the operations of method 1400 can be performed by a UE 115 as described with reference to FIGs. 1 through 3. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware.

[0195] At 1405, the method can include receiving, from a base station, a configuration indicating a first monitoring pattern for a first SS set within a first transmission time interval and a second monitoring pattern for a second SS set within a second transmission time interval. The operations of 1405 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1405 can be performed by a configuration information manager 925 as described with reference to FIG. 9.

[0196] At 1410, the method can include receiving, from a base station, an indication that a first set of downlink control channel candidates in a first SS set are linked with a second set of downlink control channel candidates in a second SS set for downlink control channel repetition. The operations of 1410 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1410 can be performed by a SS set linking manager 940 as described with reference to FIG. 9.

[0197] At 1415, the method can include comparing the first monitoring pattern and the second monitoring pattern to determine whether a set of one or more rules are satisfied. The operations of 1415 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1415 can be performed by a linking rules manager 945 as described with reference to FIG. 9.

[0198] At 1420, the method can include determining that a first downlink control channel candidate of the first set of downlink control channel candidates is linked with a second downlink control channel candidate of the second set of downlink control channel candidates based on the one or more rules being satisfied. The operations of 1420 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1420 can be performed by a linking rules manager 945 as described with reference to FIG. 9.

[0199] At 1425, the method can include monitoring the first set of downlink control channel candidates of the first SS set and the second set of downlink control channel candidates of the second SS set based on the first SS set and the second SS set having a same periodicity but different offsets. The operations of 1425 can be performed according to the examples as disclosed herein. In some examples, aspects of the operations of 1425 can be performed by a monitoring manager 935 as described with reference to FIG. 9.

[0200] Summaries of aspects of the disclosure are provided below:

[0201] Aspect 1 : A method for wireless communication at a UE, comprising: receiving, from a base station, a configuration indicating a first monitoring pattern for a first SS set within a transmission time interval and a second monitoring pattern for a second SS set within the transmission time interval; receiving, from the base station, an indication that a first set of downlink control channel candidates in the first SS set is linked with a second set of downlink control channel candidates in the second SS set for downlink control channel repetition; and monitoring the first set of downlink control channel candidates of the first SS set and the second set of downlink control channel candidates of the second SS set based at least in part on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

[0202] Aspect 2: The method of aspect 1, further comprising: verifying that a number of monitoring occasions of the first monitoring pattern is the same as a number of monitoring occasions of the second monitoring pattern, wherein monitoring the first set of downlink control channel candidates and the second set of downlink control channel candidates is further based at least in part on the verifying.

[0203] Aspect 3: The method of aspect 2, further comprising: determining, based at least in part on the verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that the monitoring occasions from each of the first SS and the second SS are linked based at least in part on a time ordering of the monitoring occasions within the first SS and the second SS, respectively.

[0204] Aspect 4: The method of aspect 2, further comprising: determining, based at least in part on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that the monitoring occasions from each of the first SS and the second SS are linked based at least in part on an order of index values associated with the monitoring occasions within the first SS and the second SS, respectively.

[0205] Aspect 5: The method of aspect 2, further comprising: determining, based at least in part on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that a first monitoring occasion of the first set of SSs is linked with a second monitoring occasion of the second set of SSs.

[0206] Aspect 6: The method of aspect 5, further comprising: determining, based at least in part on determining that the first monitoring occasion is linked with the second monitoring occasion, that a first downlink control channel candidate of a first group of downlink control channel candidates located in the first monitoring occasion is linked with a second downlink control channel candidate of a second group of downlink control channel candidates located in the second monitoring occasion.

[0207] Aspect 7: The method of aspect 6, further comprising: receiving, based at least in part on the monitoring, a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate; and combining the first repetition of the downlink control message and the second repetition of the downlink control message.

[0208] Aspect 8: The method of any one of aspects 1-7, further comprising: verifying that a duration of the first set of SSs within a period of the monitoring pattern is the same as a duration of the second set of SSs within the period of the monitoring pattern, wherein monitoring the first group of downlink control channel candidates and the second group of downlink control channel candidates is further based at least in part on the verifying.

[0209] Aspect 9: A method for wireless communication at a UE, comprising: receiving, from a base station, a configuration indicating a first monitoring pattern for a first set of SSs within a first transmission time interval and a second monitoring pattern for a second set of SSs within a second transmission time interval; receiving, from the base station, an indication that a first group of downlink control channel candidates in the first set of SSs are linked with a second group of downlink control channel candidates in the second set of SSs for downlink control channel repetition; and monitoring the first group of downlink control channel candidates of the first set of SSs and the second group of downlink control channel candidates of the second set of SSs based at least in part on the first set of SSs and the second set of SSs having a same periodicity but different offsets.

[0210] Aspect 10: The method of aspect 9, further comprising: comparing the first monitoring pattern and the second monitoring pattern to determine whether a set of one or more rules are satisfied; and determining that the first downlink control channel candidate of the first group of downlink control channel candidates is linked with the second downlink control channel candidate of the second group of downlink control channel candidates based at least in part on the set of one or more rules being satisfied.

[0211] Aspect 11: The method of aspect 10, further comprising: determining that the set of one or more rules are satisfied based at least in part on: a first slot number of the first transmission time interval, a first frame number associated with the first transmission time interval, a first offset of the first SS set, a second slot number of the second transmission time interval, a second frame number associated with the second transmission time interval, a second offset of the second SS set, or any combination thereof, wherein the second frame number multiplied by a number of slots per frame plus the second slot number is greater than the first frame number multiplied by the number of slots per frame plus the second slot number, which is greater than the second frame number multiplied by a number of frames per slot plus the second slot number minus a period of a same cycle of the first SS set and the second SS set.

[0212] Aspect 12: The method of aspect 11, further comprising: ordering the first SS set and the second SS set, wherein determining that the set of one or more rules are satisfied is based at least in part on ordering the first SS set and the second SS set.

[0213] Aspect 13: The method of aspect 12, further comprising: receiving an indication from the base station that the first SS set is ordered before the second SS set.

[0214] Aspect 14: The method of any of aspects 12 through 13, further comprising: identifying a first index for the first SS set and a second index for the second SS set, wherein comparing the first monitoring pattern and the second monitoring pattern comprises: comparing the first index with the second index.

[0215] Aspect 15: The method of any of aspects 10 through 14, further comprising: receiving a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate based at least in part on the set of one or more rules being satisfied; and combining the first repetition of the downlink control message and the second repetition of the downlink control message.

[0216] Aspect 16: The method of any of aspects 10 through 15, further comprising: determining that the first transmission time interval is located before the second transmission time interval based at least in part on determining whether the set of one or more rules are satisfied.

[0217] Aspect 17: The method of any of aspects 9 through 16, wherein a duration of the first set of SSs within a period of the monitoring mode is the same as a duration of the second set of SSs within the period of the monitoring mode.

[0218] Aspect 18: The method of aspect 17, wherein the duration comprises a transmission time interval.

[0219] Aspect 19: The method of any of aspects 17 through 18, wherein the duration comprises a set of consecutive transmission time intervals.

[0220] Aspect 20: The method of any of aspects 9 through 19, further comprising verifying that a number of monitoring occasions of the first monitoring mode is the same as a number of monitoring occasions of the second monitoring mode, determining, based at least in part on verifying that the first monitoring mode and the second monitoring mode have the same number of monitoring occasions, that a first monitoring occasion of the first set of SSs is linked with a second monitoring occasion of the second set of SSs, and determining, based at least in part on determining that the first monitoring occasion is linked with the second monitoring occasion, that a first downlink control channel candidate of the first group of downlink control channel candidates is linked with a second downlink control channel candidate of the second group of downlink control channel candidates.

[0221] Aspect 21: The method of aspect 20, further comprising receiving, based at least in part on the monitoring, a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate, and combining the first repetition of the downlink control message and the second repetition of the downlink control message.

[0222] Aspect 22: An apparatus for wireless communication at a UE, comprising at least one processor; a memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to perform the method of any of aspects 1 through 8.

[0223] Aspect 23: An apparatus for wireless communication at a UE, comprising at least one means for performing the method of any of aspects 1 through 8.

[0224] Aspect 24: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any of aspects 1 through 8.

[0225] Aspect 25: An apparatus for wireless communication at a UE, comprising at least one processor; a memory coupled to the at least one processor storing instructions executable by the at least one processor to cause the apparatus to perform the method of any of aspects 9 through 21.

[0226] Aspect 26: An apparatus for wireless communication at a UE, comprising at least one means for performing the method of any of aspects 9 through 21.

[0227] Aspect 27: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any of aspects 9 through 21.

[0228] It should be noted that the methods described herein describe possible implementations, and that the operations and the steps can be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods can be combined.

[0229] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems can be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology can be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques can be applicable to 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 others, including next generation technologies and wireless radio technologies not yet conceived.

[0230] Information and signals described herein can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that can be referenced throughout the description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0231] The various illustrative boxes and components described in conjunction with the disclosure herein may be implemented or executed using a general-purpose processor, DSP, ASIC, CPU, GPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware component, 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. The 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 combined with a DSP core, or any other such configuration).

[0232] The functionality described herein may be implemented in hardware, software executed by a processor, or any combination thereof. Whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, software should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, or functions. If implemented in software executed by a processor, the functionality may be stored as one or more instructions or code on or transmitted through a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functionality described herein may be implemented using software executed by a processor, hardware, hardwiring, or any combination of these. Features implementing the functionality may also be physically located in various locations, including being distributed such that portions of the functionality are implemented in different physical locations.

[0233] 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. A non-transitory storage medium can 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 can comprise 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 a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0234] As used herein, including in the claims “or” as used in a list of items (for example, a list of items prefaced by a phrase such as “at least one of’ or “one or more of’) indicates an inclusive list such that, 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 (A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” can be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on.” As used herein, the term “and / or,” when used in a list of two or more items, means that any one of the listed items can be employed by itself, or any combination of two or more of the listed items can be employed. For example, if a composition is described as containing components A, B, and / or C, the composition can contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination.

[0235] In the drawings, like referenced numerals can identify like components or features throughout the views. Further, various components of the same type can be distinguished by following the designation of the drawings figure with a dash and a second designation numeral: e.g., 102-1 is a second instance of the component 102. If first and second designated numerals (104-1, 104-2) are used, the description can be referring to either the first or second instance of the component unless otherwise indicated.

[0236] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that can be implemented or that are within the scope of the claims. The term “example” is used herein to mean “serving as an example, instance, or illustration,” and not “preferred” or “advantageous over other examples.” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, can be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

[0237] The description herein is presented to enable any person skilled in the art to practice the present disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other variations without departing from the scope of the disclosure. Thus, the present disclosure is not intended to be limited to the examples described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: receiving, from a base station, a configuration indicating a first monitoring pattern for a first search space set within a transmission time interval and a second monitoring pattern for a second search space set within the transmission time interval; receiving, from the base station, an indication that a first group of downlink control channel candidates in the first search space set are linked with a second group of downlink control channel candidates in the second search space set for downlink control channel repetition based at least in part on a number of monitoring occasions of the first monitoring pattern being the same as a number of monitoring occasions of the second monitoring pattern; and monitoring the first group of downlink control channel candidates of the first search space set and the second group of downlink control channel candidates of the second search space set based at least in part on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

2. The method of claim 1, further comprising: verifying that the number of monitoring occasions of the first monitoring pattern is the same as the number of monitoring occasions of the second monitoring pattern, wherein monitoring the first group of downlink control channel candidates and the second group of downlink control channel candidates is further based at least in part on the verification.

3. The method of claim 2, further comprising: determining, based at least in part on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that monitoring occasions from each of the first search space set and the second search space set are linked based at least in part on a temporal ordering of monitoring occasions within the first search space and the second search space, respectively.

4. The method of claim 2, further comprising: determining, based at least in part on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that monitoring occasions from each of the first search space set and the second search space set are linked based at least in part on an order of index values associated with monitoring occasions within the first search space set and the second search space set, respectively.

5. The method of claim 2, further comprising: determining, based at least in part on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that a first monitoring occasion of the first search space set is linked with a second monitoring occasion of the second search space set.

6. The method of claim 5, further comprising: determining, based at least in part on determining that the first monitoring occasion is linked with the second monitoring occasion, that a first downlink control channel candidate of the first group of downlink control channel candidates located in the first monitoring occasion is linked with a second downlink control channel candidate of the second group of downlink control channel candidates located in the second monitoring occasion.

7. The method of claim 6, further comprising: receiving, based at least in part on the monitoring, a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate; and combining the first repetition of the downlink control message and the second repetition of the downlink control message.

8. The method of claim 1, further comprising: verifying that a duration of the first search space set for a period of the first monitoring mode is the same as a duration of the second search space set for a period of the second monitoring mode, wherein monitoring the first set of downlink control channel candidates and the second set of downlink control channel candidates is further based at least in part on the verifying.

9. A method for wireless communication performed at a user equipment (UE), comprising: receiving, from a base station, a configuration indicating a first monitoring mode for a first search space set within a first transmission time interval and a second monitoring mode for a second search space set within a second transmission time interval; receiving, from the base station, an indication that a first set of downlink control channel candidates in the first search space set is linked with a second set of downlink control channel candidates in the second search space set for downlink control channel repetition based at least in part on a number of monitoring occasions of the first monitoring mode being the same as a number of monitoring occasions of the second monitoring mode; and monitoring the first set of downlink control channel candidates of the first search space set and the second set of downlink control channel candidates of the second search space set based at least in part on the first search space set and the second search space set having a same periodicity but different offsets.

10. The method of claim 9, further comprising: comparing the first monitoring mode and the second monitoring mode to determine whether a set of one or more rules are satisfied; and determining that a first downlink control channel candidate in the first set of downlink control channel candidates is linked with a second downlink control channel candidate in the second set of downlink control channel candidates based at least in part on the one or more rules being satisfied.

11. The method of claim 10, further comprising: determining that the one or more rules are satisfied based at least in part on: a first slot number of the first transmission time interval, a first frame number associated with the first transmission time interval, a first offset of the first search space set, a second slot number of the second transmission time interval, a second frame number associated with the second transmission time interval, a second offset of the second search space set, or any combination thereof, where the second frame number multiplied by a number of slots per frame plus the second slot number is greater than the first frame number multiplied by the number of slots per frame plus the second slot number, the first frame number multiplied by the number of slots per frame plus the second slot number is greater than the second frame number multiplied by a number of frames per slot plus the second slot number minus a period of a same periodicity of the first search space set and the second search space set.

12. The method of claim 11, further comprising: ordering the first search space set and the second search space set, where determining that the one or more rules are satisfied is based at least in part on ordering the first search space set and the second search space set.

13. The method of claim 12, further comprising: receiving, from the base station, an indication that the first search space set is ordered before the second search space set.

14. The method of claim 12, further comprising: identifying a first index for the first search space set and a second index for the second search space set, where comparing the first monitoring pattern and the second monitoring pattern comprises comparing the first index and the second index.

15. The method of claim 10, further comprising: receiving, based at least in part on the one or more rules being satisfied, a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate; and combining the first repetition of the downlink control message and the second repetition of the downlink control message.

16. The method of claim 10, further comprising: determining that the first transmission time interval is before the second transmission time interval based at least in part on determining whether the one or more rules are satisfied. a duration of the first search space set within a period of the first monitoring pattern is the same as a duration of the second search space set within a period of the second monitoring pattern.

17. The method of claim 9, wherein, the duration comprises a slot.

18. The method of claim 17, wherein, the duration comprises a set of consecutive transmission time intervals.

19. The method of claim 17, wherein, 20. The method of claim 9, further comprising: verifying that a number of monitoring occasions of the first monitoring pattern is the same as a number of monitoring occasions of the second monitoring pattern; determining that a first monitoring occasion of the first search space set is linked with a second monitoring occasion of the second search space set based at least in part on verifying that the first monitoring pattern and the second monitoring pattern have the same number of monitoring occasions; and ​ ​ determining that a first downlink control channel candidate of the first group of downlink control channel candidates is linked with a second downlink control channel candidate of the second group of downlink control channel candidates based at least in part on determining that the first monitoring occasion is linked with the second monitoring occasion.

21. The method of claim 20, further comprising: receiving a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate based at least in part on the monitoring; and combining the first repetition of the downlink control message and the second repetition of the downlink control message.

22. An apparatus for wireless communication at a user equipment (UE), comprising: at least one processor; and a memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to: receive, from a base station, a configuration indicating a first monitoring mode for a first search space set within a transmission time interval and a second monitoring mode for a second search space set within the transmission time interval; receive, from the base station, an indication that a first group of downlink control channel candidates in the first search space set is linked with a second group of downlink control channel candidates in the second search space set for downlink control channel repetition based at least in part on a number of monitoring occasions of the first monitoring mode being the same as a number of monitoring occasions of the second monitoring mode; and monitor the first group of downlink control channel candidates of the first search space set and the second group of downlink control channel candidates of the second search space set based at least in part on the first monitoring mode and the second monitoring mode having a same periodicity and offset.

23. The apparatus of claim 22, wherein, the instructions are further executable by the at least one processor to cause the apparatus to: verify that the number of monitoring occasions of the first monitoring mode is the same as the number of monitoring occasions of the second monitoring mode, wherein monitoring the first group of downlink control channel candidates and the second group of downlink control channel candidates is further based at least in part on the verification.

24. The apparatus of claim 23, wherein, the instructions are further executable by the at least one processor to cause the apparatus to: determine that monitoring occasions from each of the first search space set and the second search space set are linked based at least in part on a time ordering of monitoring occasions within the first search space set and the second search space set, respectively, based at least in part on verifying that the first monitoring mode and the second monitoring mode have a same number of monitoring occasions.

25. The apparatus of claim 23, wherein, the instructions are further executable by the at least one processor to cause the apparatus to: determining, based at least in part on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that monitoring occasions from each of the first search space set and the second search space set are linked based at least in part on an order of index values associated with the monitoring occasions within the first search space set and the second search space set, respectively.

26. The apparatus of claim 23, wherein, the instructions executable by the at least one processor to further cause the apparatus to: determine, based at least in part on verifying that the first monitoring pattern and the second monitoring pattern have a same number of monitoring occasions, that a first monitoring occasion of the first search space set is linked with a second monitoring occasion of the second search space set.

27. The apparatus of claim 26, wherein, the instructions executable by the at least one processor to further cause the apparatus to: determine, based at least in part on determining that the first monitoring occasion is linked with the second monitoring occasion, that a first downlink control channel candidate of the first group of downlink control channel candidates located in the first monitoring occasion is linked with a second downlink control channel candidate of the second group of downlink control channel candidates located in the second monitoring occasion.

28. The apparatus of claim 27, wherein, the instructions executable by the at least one processor to further cause the apparatus to: receive, based at least in part on the monitoring, a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate; and combine the first repetition of the downlink control message and the second repetition of the downlink control message.

29. The apparatus of claim 22, wherein, the instructions executable by the at least one processor to further cause the apparatus to: verify that a duration of the first search space set within a period of the first monitoring pattern is the same as a duration of the second search space set within a period of the second monitoring pattern, wherein monitoring the first group of downlink control channel candidates and the second group of downlink control channel candidates is further based at least in part on the verification.

30. An apparatus for wireless communication performed at a user equipment (UE), comprising: at least one processor; and a memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to: receive, from a base station, a configuration indicating a first monitoring pattern for a first search space set within a first transmission time interval and a second monitoring pattern for a second search space set within a second transmission time interval; receive, from the base station, an indication that a first group of downlink control channel candidates in the first search space set are linked with a second group of downlink control channel candidates in the second search space set for downlink control channel repetition based at least in part on a number of monitoring occasions of the first monitoring pattern being the same as a number of monitoring occasions of the second monitoring pattern; and monitoring the first set of downlink control channel candidates of the first search space set and the second set of downlink control channel candidates of the second search space set based at least in part on the first search space set and the second search space set having a same periodicity but different offsets.

31. The apparatus of claim 30, wherein, The instructions can further be executable by the at least one processor to cause the apparatus to: compare the first monitoring pattern and the second monitoring pattern to determine whether a set of one or more rules is satisfied; and determine that a first downlink control channel candidate of the first set of downlink control channel candidates is linked with a second downlink control channel candidate of the second set of downlink control channel candidates based at least in part on the set of one or more rules being satisfied.

32. The apparatus of claim 31, wherein, The instructions can further be executable by the at least one processor to cause the apparatus to: determine that the set of one or more rules is satisfied based at least in part on a first slot number of the first transmission time interval, a first frame number associated with the first transmission time interval, a first offset of the first search space set, a second slot number of the second transmission time interval, a second frame number associated with the second transmission time interval, a second offset of the second search space set, or any combination thereof, wherein the second frame number multiplied by a number of slots per frame plus the second slot number of the slots is greater than the first frame number multiplied by the number of slots per frame plus the second slot number, which is greater than the second frame number multiplied by a number of frames per slot plus the second slot number minus a period of a same periodicity of the first search space set and the second search space set.

33. The apparatus of claim 32, wherein, The instructions can further be executable by the at least one processor to cause the apparatus to: order the first search space set and the second search space set, wherein determining that the set of one or more rules is satisfied is based at least in part on ordering the first search space set and the second search space set.

34. The apparatus of claim 33, wherein, The instructions can further be executable by the at least one processor to cause the apparatus to: receive an indication from the base station that the first search space set is ordered before the second search space set.

35. The apparatus of claim 33, wherein, The instructions can further be executable by the at least one processor to cause the apparatus to: identify a first index for the first search space set and a second index for the second search space set, wherein comparing the first monitoring pattern and the second monitoring pattern comprises comparing the first index with the second index.

36. The apparatus of claim 31, wherein, The instructions can further be executable by the at least one processor to cause the apparatus to: receive a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate based at least in part on the set of one or more rules being satisfied; and combining the first repetition of the downlink control message and the second repetition of the downlink control message.

37. The apparatus of claim 31, wherein, The instructions are further executable by the at least one processor to cause the apparatus to: determine that the first transmission time interval is located before the second transmission time interval based at least in part on determining whether the one or more rules are satisfied.

38. The apparatus of claim 30, wherein, a duration of the first search space set within a period of the first monitoring mode is the same as a duration of the second search space set within a period of the second monitoring mode.

39. The device of claim 38, wherein, The duration includes a slot.

40. The apparatus of claim 38, wherein, The duration includes a set of consecutive transmission time intervals.

41. The apparatus of claim 30, wherein, The instructions are further executable by the at least one processor to cause the apparatus to: verify that a number of monitoring occasions of the first monitoring mode is the same as a number of monitoring occasions of the second monitoring mode; determine that a first monitoring occasion of the first search space set is linked with a second monitoring occasion of the second search space set based at least in part on verifying that the first monitoring mode and the second monitoring mode have a same number of monitoring occasions; and determine that a first downlink control channel candidate of the first group of downlink control channel candidates is linked with a second downlink control channel candidate of the second group of downlink control channel candidates based at least in part on determining that the first monitoring occasion is linked with the second monitoring occasion.

42. The device of claim 41, wherein, The instructions are further executable by the at least one processor to cause the apparatus to: receive, based at least in part on the monitoring, a first repetition of a downlink control message on the first downlink control channel candidate and a second repetition of the downlink control message on the second downlink control channel candidate; and combine the first repetition of the downlink control message and the second repetition of the downlink control message.

43. An apparatus for wireless communication performed at a user equipment (UE), comprising: means for receiving, from a base station, a configuration indicating a first monitoring mode for a first search space set within a transmission time interval and a second monitoring mode for a second search space set within the transmission time interval; means for receiving, from the base station, an indication that a first group of downlink control channel candidates in the first search space set is linked with a second group of downlink control channel candidates in the second search space set for downlink control channel repetition based at least in part on a number of monitoring occasions of the first monitoring mode being the same as a number of monitoring occasions of the second monitoring mode; and means for monitoring the first group of downlink control channel candidates of the first search space set and the second group of downlink control channel candidates of the second search space set based at least in part on the first monitoring mode and the second monitoring mode having a same periodicity and offset.

44. An apparatus for wireless communication performed at a user equipment (UE), comprising: means for receiving, from a base station, a configuration indicating a first monitoring pattern for a first search space set within a first transmission time interval and a second monitoring pattern for a second search space set within a second transmission time interval; means for receiving, from the base station, an indication that a first set of downlink control channel candidates in the first search space set are linked with a second set of downlink control channel candidates in the second search space set for downlink control channel repetition based at least in part on a number of monitoring occasions of the first monitoring pattern being the same as a number of monitoring occasions of the second monitoring pattern; and means for monitoring the first set of downlink control channel candidates of the first search space set and the second set of downlink control channel candidates of the second search space set based at least in part on the first search space set and the second search space set having a same periodicity but different offsets.

45. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by at least one processor to: receive, from a base station, a configuration indicating a first monitoring pattern for a first search space set within a transmission time interval and a second monitoring pattern for a second search space set within the transmission time interval; receive, from the base station, an indication that a first set of downlink control channel candidates in the first search space set are linked with a second set of downlink control channel candidates in the second search space set for downlink control channel repetition based at least in part on a number of monitoring occasions of the first monitoring pattern being the same as a number of monitoring occasions of the second monitoring pattern; and monitor the first set of downlink control channel candidates of the first search space set and the second set of downlink control channel candidates of the second search space set based at least in part on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset.

46. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by at least one processor to: receive, from a base station, a configuration indicating a first monitoring pattern for a first search space set within a first transmission time interval and a second monitoring pattern for a second search space set within a second transmission time interval; receive, from the base station, an indication that a first set of downlink control channel candidates in the first search space set are linked with a second set of downlink control channel candidates in the second search space set for downlink control channel repetition based at least in part on a number of monitoring occasions of the first monitoring pattern being the same as a number of monitoring occasions of the second monitoring pattern; and monitor the first set of downlink control channel candidates of the first search space set and the second set of downlink control channel candidates of the second search space set based at least in part on the first monitoring pattern and the second monitoring pattern having a same periodicity and offset. monitoring the first set of downlink control channel candidates of the first search space set and the second set of downlink control channel candidates of the second search space set based at least in part on the first search space set and the second search space set having a same periodicity but different offsets.

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