# US 11,121,815 B2 · Shared data channel design > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,121,815 B2 - Document ID: US11121815B2 - Status: Granted - Kind: B2 - Application number: 16/346,577 - Filed: 2017-11-02 - Published: 2019-09-12 - Granted: 2021-09-14 - Earliest claimed: 2016-11-02 - Assignees: IDAC Holdings, Inc. - Applicants: IDAC Holdings, Inc. - Inventors: Liangping Ma; Shahrokh Nayeb Nazar; Oghenekome Oteri; Seyed Mohsen Hosseinian; Mahmoud Taherzadeh Boroujeni; Frank La Sita - Web page: https://patentgrep.com/patent/US11121815B2 ## CPC - H04L 1/008: {where the control data relates to payload of a different packet} - H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1273: of downlink data flows - H04W 76/11: Allocation or use of connection identifiers - 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 Systems, methods and instrumentalities are disclosed for decoding data. For example, it may be determined, in a current slot, whether data received in a previous slot is decoded successfully. The data received in the previous slot may be included in a Physical Downlink Shared Channel (PDSCH). If the data received in the previous slot is not decoded successfully, preemptive multiplexing information may be detected in a first search space. The data received in the previous slot may be decoded, for example, using detected preemptive multiplexing information. The preemptive multiplexing information may be of a current slot. The preemptive multiplexing information may be comprised in a first DCI. A second search space of the current slot may be searched. For example, the second search space may be searched for a second DCI. The first DCI and the second DCI may be different. ## Claims ### Claim 1 A wireless transmit/receive unit (WTRU), comprising: a processor configured to: monitor for a first downlink control information (DCI) in a first search space of a first slot, wherein the first DCI has a first format and is associated with a first radio network temporary identifier (RNTI); monitor for a second DCI in a second search space of a second slot, wherein the second DCI has a second format and is associated with a second RNTI; if the second DCI is detected in the second search space of the second slot, determine, based on the second DCI, that a region in a previous allocation to the WTRU does not carry data for the WTRU, wherein the previous allocation is associated with a previous transmission to the WTRU; and decode data associated with the previous transmission using information associated with the first DCI. ### Claim 2 (depends on 1) The WTRU of claim 1, wherein the previous transmission to the WTRU is in a previous slot. ### Claim 3 (depends on 1) The WTRU of claim 1, wherein the processor is further configured to monitor for a third DCI in a third search space of the second slot, wherein the third DCI includes scheduling information for a transmission intended for the WTRU in a current slot, and wherein the third DCI is associated with the first RNTI. ### Claim 4 (depends on 3) The WTRU of claim 3, wherein the second search space and the third search space do not overlap. ### Claim 5 (depends on 3) The WTRU of claim 3, wherein the second search space and the third search space overlap. ### Claim 6 (depends on 3) The WTRU of claim 3, wherein the second search space is a common search space and the third search space is in a WTRU-specific search space. ### Claim 7 (depends on 3) The WTRU of claim 3, wherein the second DCI has a first size and the third DCI has a second size, and wherein the second size is greater than the first size. ### Claim 8 (depends on 3) The WTRU of claim 3, wherein the first RNTI and the second RNTI are different. ### Claim 9 (depends on 1) The WTRU of claim 1, wherein the region in the previous allocation comprises at least one of resource blocks or symbols. ### Claim 10 A method implemented in a wireless transmit/receive unit (WTRU) associated with decoding data, the method comprising: monitoring for a first downlink control information (DCI) in a first search space of a first slot, wherein the first DCI has a first format and is associated with a first radio network temporary identifier (RNTI); monitoring for a second DCI in a second search space of a second slot, wherein the second DCI has a second format and is associated with a second RNTI; if the second DCI is detected in the second search space of the second slot, determining, based on the second DCI, that a region in a previous allocation to the WTRU does not carry data for the WTRU, wherein the previous allocation is associated with a previous transmission to the WTRU; and decoding data associated with the previous transmission using information associated with the first DCI. ### Claim 11 (depends on 10) The method of claim 10, further comprising monitoring for a third DCI in a third search space of the second slot, wherein the third DCI includes scheduling information for a transmission intended for the WTRU in a current slot, wherein the third DCI is associated with the first RNTI, and wherein the first RNTI and the second RNTI are different. ### Claim 12 (depends on 11) The method of claim 11, wherein the second search space and the third search space do not overlap or the second search space and the third search space overlap. ### Claim 13 (depends on 11) The method of claim 11, wherein the second search space is a common search space and the third search space is in a WTRU-specific search space. ### Claim 14 (depends on 11) The method of claim 11, wherein the second DCI has a first size and the third DCI has a second size, and wherein the second size is greater than the first size. ### Claim 15 (depends on 11) The method of claim 11, wherein the previous transmission to the WTRU is in a previous slot.