# US 12,004,176 B2 · Overlapping physical downlink control channel candidate thresholds > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,176 B2 - Document ID: US12004176B2 - Status: Granted - Kind: B2 - Application number: 17/387,842 - Filed: 2021-07-28 - Published: 2023-02-02 - Granted: 2024-06-04 - Earliest claimed: 2021-07-28 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Mostafa Khoshnevisan; Jae Ho Ryu; Hari Sankar; Hobin Kim - Web page: https://patentgrep.com/patent/US12004176B2 ## CPC - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Methods, systems, and devices for wireless communications are described that support overlapping physical downlink control channel (PDCCH) candidate thresholds. In some examples, a user equipment (UE) may determine, for each subcarrier spacing (SCS) configuration of a set of SCS configurations, a threshold number of overlapping PDCCH candidates within a time interval. The UE may receive, from a base station, signaling indicating one or more PDCCH monitoring configurations. In some examples, the UE may monitor the PDCCH for control information according to the one or more PDCCH monitoring configurations and a number of overlapping PDCCH candidates, where the number of overlapping PDCCH candidates may satisfy (e.g., be less than or equal to) the threshold number of overlapping PDCCH candidates. ## Claims ### Claim 1 An apparatus for wireless communication, comprising: a processor; and memory coupled with the processor, wherein the processor is configured to: determine a threshold number of overlapping physical downlink control channel candidates within a time interval and a threshold number of monitored physical downlink control channel candidates, the threshold number of monitored physical downlink control channel candidates being associated with a subcarrier spacing configuration of a set of one or more subcarrier spacing configurations, wherein the threshold number of overlapping physical downlink control channel candidates is a different threshold than the threshold number of monitored physical downlink control channel candidates; receive signaling indicating one or more physical downlink control channel monitoring configurations; and monitor a physical downlink control channel for control information based at least in part on the one or more physical downlink control channel monitoring configurations and a particular number of overlapping physical downlink control channel candidates satisfying the threshold number of overlapping physical downlink control channel candidates. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the processor is configured to: calculate the particular number of overlapping physical downlink control channel candidates based at least in part on the one or more physical downlink control channel monitoring configurations, wherein the particular number of overlapping physical downlink control channel candidates is less than or equal to the threshold number of overlapping physical downlink control channel candidates. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein, to calculate the particular number of overlapping physical downlink control channel candidates, the processor is configured to: determine a total number of overlapping control channel candidates within the time interval; and subtract a quantity from the total number of overlapping control channel candidates, wherein the particular number of overlapping physical downlink control channel candidates is based at least in part on a result of the subtraction. ### Claim 4 (depends on 2) The apparatus of claim 2, wherein, to calculate the particular number of overlapping physical downlink control channel candidates, the processor is configured to: determine a number of overlapping physical downlink control channel candidate pairs; and calculate the particular number of overlapping physical downlink control channel candidates based at least in part on the number of overlapping physical downlink control channel candidate pairs. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein, to determine the threshold number of overlapping physical downlink control channel candidates, the processor is configured to: identify the threshold number of overlapping physical downlink control channel candidates from a set of predetermined physical downlink control channel candidate thresholds. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein identification of the threshold number of overlapping physical downlink control channel candidates from the set of predetermined physical downlink control channel candidate thresholds is based at least in part on a subcarrier spacing or the one or more physical downlink control channel monitoring configurations. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the processor is configured to: transmit capability signaling comprising an indication of the threshold number of overlapping physical downlink control channel candidates. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the capability signaling is indicated per radio frequency band or per radio frequency band combination. ### Claim 9 (depends on 7) The apparatus of claim 7, wherein the capability signaling comprises the indication of the threshold number of overlapping physical downlink control channel candidates per subcarrier spacing configuration or per downlink control channel monitoring configurations. ### Claim 10 (depends on 7) The apparatus of claim 7, wherein the capability signaling comprises the indication of the threshold number of overlapping physical downlink control channel candidates per slot or per span. ### Claim 11 (depends on 7) The apparatus of claim 7, wherein the capability signaling indicates that the apparatus supports physical downlink control channel repetition. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein the processor is configured to: calculate the particular number of overlapping physical downlink control channel candidates for respective component carriers of a set of one or more component carriers or for the set of one or more component carriers, wherein the threshold number of overlapping physical downlink control channel candidates is for the respective component carriers of the set of one or more component carriers or for the set of one or more component carriers. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein: at least one component carrier of the set of one or more component carriers comprises a scheduling component carrier, and the threshold number of overlapping physical downlink control channel candidates associated with the scheduling component carrier corresponds to a plurality of component carriers scheduled by the scheduling component carrier. ### Claim 14 (depends on 1) The apparatus of claim 1, wherein, to determine the threshold number of overlapping physical downlink control channel candidates, the processor is configured to: determine a first threshold number of overlapping physical downlink control channel candidates for a first subcarrier spacing configuration of the set of one or more subcarrier spacing configurations; and determine a second threshold number of overlapping physical downlink control channel candidates for a second subcarrier spacing configuration of the set of one or more subcarrier spacing configurations, wherein the first threshold number of overlapping physical downlink control channel candidates is different from the second threshold number of overlapping physical downlink control channel candidates. ### Claim 15 (depends on 1) The apparatus of claim 1, wherein the processor is configured to: determine that a first physical downlink control channel candidate overlaps with a second physical downlink control channel candidate based at least in part on the one or more physical downlink control channel monitoring configurations, wherein the threshold number of overlapping physical downlink control channel candidates is used for the first physical downlink control channel candidate and the second physical downlink control channel candidate. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the first physical downlink control channel candidate and the second physical downlink control channel candidate each comprise a non-linked physical downlink control channel candidate. ### Claim 17 (depends on 15) The apparatus of claim 15, wherein the first physical downlink control channel candidate comprises a non-linked physical downlink control channel candidate and the second physical downlink control channel candidate comprises a physical downlink control channel candidate linked to a third physical downlink control channel candidate different than the first physical downlink control channel candidate and the second physical downlink control channel candidate. ### Claim 18 (depends on 15) The apparatus of claim 15, wherein the first physical downlink control channel candidate comprises a physical downlink control channel candidate linked to a third physical downlink control channel candidate and the second physical downlink control channel candidate comprises a physical downlink control channel candidate linked to a fourth physical downlink control channel candidate. ### Claim 19 (depends on 1) The apparatus of claim 1, wherein at least one overlapping physical downlink control channel candidate comprises a physical downlink control channel candidate that is excluded from a blind decoding limit. ### Claim 20 (depends on 1) The apparatus of claim 1, wherein each overlapping physical downlink control channel candidate is associated with a same set of time frequency resources, a same control resource set, a same scrambling sequence, a same DCI size, and a same carrier indicator field. ### Claim 21 (depends on 1) The apparatus of claim 1, wherein the time interval comprises a slot, a span, or a physical downlink control channel monitoring occasion. ### Claim 22 (depends on 1) The apparatus of claim 1, wherein the particular number of overlapping physical downlink control channel candidates is less than or equal to the threshold number of overlapping physical downlink control channel candidates. ### Claim 23 (depends on 1) The apparatus of claim 1, wherein the particular number of overlapping physical downlink control channel candidates is based at least in part on a number of overlapping physical downlink control channel candidate pairs. ### Claim 24 (depends on 1) The apparatus of claim 1, wherein the processor is configured to: transmit capability signaling indicating the threshold number of overlapping physical downlink control channel candidates. ### Claim 25 (depends on 24) The apparatus of claim 24, wherein the capability signaling indicates that the apparatus supports physical downlink control channel repetition. ### Claim 26 (depends on 1) The apparatus of claim 1, wherein the time interval is a slot. ### Claim 27 A method of wireless communication performed by an apparatus, comprising: determining a threshold number of overlapping physical downlink control channel candidates within a time interval and a threshold number of monitored physical downlink control channel candidates, the threshold number of monitored physical downlink control channel candidates being associated with a subcarrier spacing configuration of a set of one or more subcarrier spacing configurations, wherein the threshold number of overlapping physical downlink control channel candidates is a different threshold than the threshold number of monitored physical downlink control channel candidates; receiving signaling indicating one or more physical downlink control channel monitoring configurations; and monitoring a physical downlink control channel for control information based at least in part on the one or more physical downlink control channel monitoring configurations and a particular number of overlapping physical downlink control channel candidates satisfying the threshold number of overlapping physical downlink control channel candidates. ### Claim 28 (depends on 27) The method of claim 27, further comprising: calculating the particular number of overlapping physical downlink control channel candidates based at least in part on the one or more physical downlink control channel monitoring configurations, wherein the particular number of overlapping physical downlink control channel candidates is less than or equal to the threshold number of overlapping physical downlink control channel candidates. ### Claim 29 (depends on 27) The method of claim 27, wherein determining the threshold number of overlapping physical downlink control channel candidates comprises: identifying the threshold number of overlapping physical downlink control channel candidates from a set of predetermined physical downlink control channel candidate thresholds. ### Claim 30 (depends on 29) The method of claim 29, wherein identifying the threshold number of overlapping physical downlink control channel candidates from the set of predetermined physical downlink control channel candidate thresholds is based at least in part on a subcarrier spacing or the one or more physical downlink control channel monitoring configurations. ### Claim 31 (depends on 27) The method of claim 27, further comprising: transmitting capability signaling comprising an indication of the threshold number of overlapping physical downlink control channel candidates, wherein the capability signaling is indicated per radio frequency band or per radio frequency band combination, and wherein the capability signaling comprises the indication of the threshold number of overlapping physical downlink control channel candidates per subcarrier spacing configuration or per downlink control channel monitoring configurations. ### Claim 32 (depends on 27) The method of claim 27, further comprising: calculating the particular number of overlapping physical downlink control channel candidates for respective component carriers of a set of one or more component carriers or for the set of one or more component carriers, wherein the threshold number of overlapping physical downlink control channel candidates is for the respective component carriers of the set of one or more component carriers or for the set of one or more component carriers. ### Claim 33 (depends on 27) The method of claim 27, wherein determining the threshold number of overlapping physical downlink control channel candidates comprises: determining a first threshold number of overlapping physical downlink control channel candidates for a first subcarrier spacing configuration of the set of one or more subcarrier spacing configurations; and determining a second threshold number of overlapping physical downlink control channel candidates for a second subcarrier spacing configuration of the set of one or more subcarrier spacing configurations, wherein the first threshold number of overlapping physical downlink control channel candidates is different from the second threshold number of overlapping physical downlink control channel candidates. ### Claim 34 An apparatus for wireless communication, comprising: means for determining a threshold number of overlapping physical downlink control channel candidates within a time interval and a threshold number of monitored physical downlink control channel candidates, the threshold number of monitored physical downlink control channel candidates being associated with a subcarrier spacing configuration of a set of one or more subcarrier spacing configurations, wherein the threshold number of overlapping physical downlink control channel candidates is a different threshold than the threshold number of monitored physical downlink control channel candidates; means for receiving signaling indicating one or more physical downlink control channel monitoring configurations; and means for monitoring a physical downlink control channel for control information based at least in part on the one or more physical downlink control channel monitoring configurations and a particular number of overlapping physical downlink control channel candidates satisfying the threshold number of overlapping physical downlink control channel candidates. ### Claim 35 A non-transitory computer-readable medium having code stored thereon that, when executed by an apparatus, causes the apparatus to: determine a threshold number of overlapping physical downlink control channel candidates within a time interval and a threshold number of monitored physical downlink control channel candidates, the threshold number of monitored physical downlink control channel candidates being associated with a subcarrier spacing configuration of a set of one or more subcarrier spacing configurations, wherein the threshold number of overlapping physical downlink control channel candidates is a different threshold than the threshold number of monitored physical downlink control channel candidates; receive signaling indicating one or more physical downlink control channel monitoring configurations; and monitor a physical downlink control channel for control information based at least in part on the one or more physical downlink control channel monitoring configurations and a particular number of overlapping physical downlink control channel candidates satisfying the threshold number of overlapping physical downlink control channel candidates. ### Claim 36 An apparatus for wireless communication, comprising: a processor; and memory coupled with the processor, wherein the processor is configured to: determine a threshold number of overlapping physical downlink control channel candidates within a time interval and a threshold number of monitored physical downlink control channel candidates, the threshold number of monitored physical downlink control channel candidates being associated with a subcarrier spacing configuration, wherein the threshold number of overlapping physical downlink control channel candidates is a different threshold than the threshold number of monitored physical downlink control channel candidates; receive signaling indicating one or more physical downlink control channel monitoring configurations; and perform physical downlink control channel candidate monitoring based at least in part on the one or more physical downlink control channel monitoring configurations and a particular number of overlapping physical downlink control channel candidates satisfying the threshold number of overlapping physical downlink control channel candidates. ### Claim 37 (depends on 36) The apparatus of claim 36, wherein the particular number of overlapping physical downlink control channel candidates is less than or equal to the threshold number of overlapping physical downlink control channel candidates. ### Claim 38 (depends on 36) The apparatus of claim 36, wherein the particular number of overlapping physical downlink control channel candidates is based at least in part on a number of overlapping physical downlink control channel candidate pairs. ### Claim 39 (depends on 36) The apparatus of claim 36, wherein the processor is configured to: transmit capability signaling indicating the threshold number of overlapping physical downlink control channel candidates. ### Claim 40 (depends on 39) The apparatus of claim 39, wherein the capability signaling indicates that the apparatus supports physical downlink control channel repetition.