# US 2021/0243789 A1 · Physical downlink shared channel including part of a downlink control information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243789 A1 - Document ID: US20210243789A1 - Status: Published application - Kind: A1 - Application number: 17/159,383 - Filed: 2021-01-27 - Published: 2021-08-05 - Earliest claimed: 2020-01-31 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Zhifei FAN; Jing SUN; Xiaoxia ZHANG; Tao LUO; Srinivas YERRAMALLI; Arumugam CHENDAMARAI KANNAN; Wooseok NAM; Sungwoo PARK; Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL; Akula Aneesh REDDY - Web page: https://patentgrep.com/patent/US20210243789A1 ## CPC - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/0009: {by adapting the channel coding (H04L1/1812 takes precedence)} - H04L 1/0011: {applied to payload information} - H04L 1/0025: {Transmission of mode-switching indication} - H04L 1/0084: {Formats for payload data} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1273: of downlink data flows - 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 In an aspect, a PDCCH and a PDSCH are transmitted by a BS to a UE, whereby the PDDCH includes a first DCI part and the PDSCH includes a second DCI part. In an example, a TBS associated with the PDSCH may be determined (e.g., either by factoring or ignoring resource elements associated with the second DCI part). In another example, the PDSCH may be associated with a modulation scheme with a constellation having constellation points, whereby the second DCI part in the PDSCH is restricted to a subset of the constellation points. In another example, rate-matching may be performed for one or more resource elements of the second DCI part. ## Claims ### Claim 1 A method of operating a base station, comprising: scheduling, during at least one slot, transmission of a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH), the PDCCH including a first part of a Downlink Control Information (DCI), the PDSCH including a second part of the DCI, wherein the scheduling includes determining a transport block size (TBS) associated with the PDSCH; and transmitting the PDCCH and the PDSCH during the at least one slot, wherein the PDSCH is transmitted in accordance with the determined TBS. ### Claim 2 (depends on 1) The method of claim 1, wherein the first and second parts of the DCI comprise a two-part DCI. ### Claim 3 (depends on 1) The method of claim 1, wherein the TBS is determined before an allocation of resource elements among a set of PDSCH resource elements for transport of the second part of the DCI. ### Claim 4 (depends on 3) The method of claim 3, wherein the TBS is determined using a modulation and coding scheme (MCS) of the PDSCH as a tuning parameter to adjust the determined TBS to offset a coding rate associated with the resource elements allocated for transport of the second part of the DCI. ### Claim 5 (depends on 1) The method of claim 1, wherein the first part of the DCI includes a control information field associated with the second part of the DCI within the PDSCH. ### Claim 6 (depends on 5) The method of claim 5, wherein the TBS is determined based on a set of resources occupied by PDSCH data and excludes a subset of the set of resource elements allocated for transport of the second part of the DCI. ### Claim 7 (depends on 6) The method of claim 6, wherein the control information field indicates a number of resource elements in the subset, and wherein the TBS determination subtracts the number of resource elements in the subset from a total number of the set of resource elements occupied by the PDSCH data. ### Claim 8 (depends on 6) The method of claim 6, further comprising: re-transmitting the PDSCH in accordance with the determined TBS. ### Claim 9 (depends on 5) The method of claim 5, wherein the TBS is determined in accordance with a TBS adjustment that is indicated to the UE. ### Claim 10 (depends on 9) The method of claim 9, wherein the TBS adjustment is indicated to the UE as a percentage of TBS size reduction in the determined TBS, or wherein the TBS adjustment is indicated the UE as an absolute TBS size reduction in the determined TBS, or wherein the TBS adjustment is indicated to the UE via the control information field of the first part of the DCI in the PDCCH, or wherein the TBS adjustment is indicated to the UE via the second part of the DCI in the PDSCH. ### Claim 11 (depends on 5) The method of claim 5, wherein the TBS is determined in accordance with a TBS adjustment that is indicated by the control information field. ### Claim 12 (depends on 11) The method of claim 11, wherein the TBS adjustment is indicated to the UE as a size of the second part of the DCI within the PDSCH, and wherein the size is conveyed via the control information field. ### Claim 13 (depends on 1) The method of claim 1, wherein the PDCCH and the PDSCH are transmitted during the same slot, or wherein the PDCCH is transmitted during a first slot and the PDSCH is transmitted during a second slot that follows the first slot. ### Claim 14 (depends on 1) The method of claim 1, wherein the second part of the DCI comprises one or more downlink (DL) grants, one or more uplink (UL) grants, or a combination thereof, or wherein the second part of the DCI comprises a first grant associated with a first UE and a second grant associated with a second UE, or a combination thereof. ### Claim 15 A method of operating a user equipment (UE), comprising: receiving, during at least one slot, transmission from a base station of a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH), the PDCCH including a first part of a Downlink Control Information (DCI), the PDSCH including a second part of the DCI; and determining a transport block size (TBS) associated with the PDSCH. ### Claim 16 (depends on 15) The method of claim 15, wherein the first and second parts of the DCI comprise a two-part DCI. ### Claim 17 (depends on 15) The method of claim 15, wherein the TBS is determined before an allocation of resource elements among a set of PDSCH resource elements for transport of the second part of the DCI. ### Claim 18 (depends on 15) The method of claim 15, wherein the first part of the DCI includes a control information field associated with the second part of the DCI within the PDSCH. ### Claim 19 (depends on 18) The method of claim 18, wherein the TBS is determined based on a set of resources occupied by PDSCH data and excludes a subset of the set of resource elements allocated for transport of the second part of the DCI. ### Claim 20 (depends on 19) The method of claim 19, wherein the control information field indicates a number of resource elements in the subset, and wherein the TBS determination subtracts the number of resource elements in the subset from a total number of the set of resource elements occupied by the PDSCH data. ### Claim 21 (depends on 19) The method of claim 19, further comprising: receiving a re-transmission of the PDSCH in accordance with the determined TBS. ### Claim 22 (depends on 18) The method of claim 18, wherein the TBS is determined in accordance with a TBS adjustment that is indicated to the UE. ### Claim 23 (depends on 22) The method of claim 22, wherein the TBS adjustment is indicated to the UE as a percentage of TBS size reduction in the determined TBS, or wherein the TBS adjustment is indicated the UE as an absolute TBS size reduction in the determined TBS, or wherein the TBS adjustment is indicated to the UE via the control information field of the first part of the DCI in the PDCCH, or wherein the TBS adjustment is indicated to the UE via the second part of the DCI in the PDSCH. ### Claim 24 (depends on 18) The method of claim 18, wherein the TBS is determined in accordance with a TBS adjustment that is indicated by the control information field. ### Claim 25 (depends on 24) The method of claim 24, wherein the TBS adjustment is indicated to the UE as a size of the second part of the DCI within the PDSCH conveyed, and wherein the size is conveyed via the control information field. ### Claim 26 (depends on 15) The method of claim 15, wherein the second part of the DCI comprises one or more downlink (DL) grants, one or more uplink (UL) grants, or a combination thereof, or wherein the second part of the DCI comprises a first grant associated with a first UE and a second grant associated with a second UE, or a combination thereof. ### Claim 27 A method of operating a base station, comprising: scheduling, during at least one slot, transmission of a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH), the PDCCH including a first part of a Downlink Control Information (DCI), the PDSCH including a second part of the DCI; and transmitting the PDCCH and the PDSCH during the at least one slot, wherein the PDSCH is transmitted via a modulation scheme associated with a constellation having a plurality of constellation points, and wherein the second part of the DCI in the PDSCH is restricted to a subset of the plurality of constellation points. ### Claim 28 (depends on 27) The method of claim 27, wherein the first part of the DCI includes a control information field associated with the second part of the DCI within the PDSCH, or wherein the modulation scheme is Quadrature Phase Shift Keying (QPSK), or wherein the restricted subset of constellation points corresponds to the four outermost constellation points among the plurality of constellation points, or a combination thereof. ### Claim 29 A method of operating a user equipment (UE), comprising: receiving, during at least one slot, transmission from a base station of a Physical Downlink Control Channel (PDCCH) including a first part of a Downlink Control Information (DCI); and receiving, during the at least one slot, transmission from the base station of a Physical Downlink Shared Channel (PDSCH) including a second part of the DCI, wherein the PDSCH is received via a modulation scheme associated with a constellation having a plurality of constellation points, and wherein the second part of the DCI in the PDSCH is restricted to a subset of the plurality of constellation points. ### Claim 30 (depends on 29) The method of claim 29, wherein the first part of the DCI includes a control information field associated with the second part of the DCI within the PDSCH, or wherein the modulation scheme is Quadrature Phase Shift Keying (QPSK), or wherein the restricted subset of constellation points corresponds to the four outermost constellation points among the plurality of constellation points, or a combination thereof.