# US 12,114,293 B2 · Beam based downlink control signaling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,114,293 B2 - Document ID: US12114293B2 - Status: Granted - Kind: B2 - Application number: 16/622,523 - Filed: 2018-06-15 - Published: 2020-07-02 - Granted: 2024-10-08 - Earliest claimed: 2017-06-15 - Assignees: InterDigital Patent Holdings, Inc. - Applicants: InterDigital Patent Holdings, Inc. - Inventors: Lakshmi R. Iyer; Guodong Zhang; Qing Li; Allan Y. Tsai; Yifan Li; Pascal M. Adjakple; Joseph M. Murray - Web page: https://patentgrep.com/patent/US12114293B2 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 5/0078: {Timing of allocation} - H04W 56/0005: {synchronizing of arrival of multiple uplinks} - 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 Disclosed herein are methods, systems, and devices that are associated with downlink (DL) control, grant free (GF) transmission, or initial access. Particularly, disclosed herein are multi beam physical downlink control channel (PDCCH) transmission mechanisms, grant free transmissions mechanisms, demodulation reference signal (DMRS) for physical broadcast channel (PBCH) mechanisms, and DMRS sequence design for new radio-channel state information-reference signal (NR-CSI-RS) and new radio-physical downlink shared channel (PDSCH) (NR-PDSCH), among other things. ## Claims ### Claim 1 A method comprising: monitoring, by a wireless transmit/receive unit (WTRU), in one or more monitoring occasions for control information, wherein the control information is received using a first beam, wherein the first beam is based on a physical downlink control channel (PDCCH) quasi co-located with a synchronization signal block (SSB); and based on the one or more monitoring occasions, receiving, by the WTRU, downlink control channel spatial information using the first beam, wherein the SSB is received using a second beam and the physical downlink control channel (PDCCH) transmission is received using the first beam, wherein the first beam and the second beam are received from a same direction and the SSB and PDCCH transmission are quasi co-located with respect to spatial quasi co-location parameters. ### Claim 2 (depends on 1) The method of claim 1, wherein the one or more monitoring occasions are different for different types of control resource sets. ### Claim 3 (depends on 1) The method of claim 1, wherein the one or more monitoring occasions are configured using radio resource control (RRC) signaling. ### Claim 4 (depends on 1) The method of claim 1, further comprising obtaining multiple downlink control informations (DCIs), wherein each of the multiple DCIs indicate a respective physical downlink shared channel grant, wherein each of the multiple DCIs indicate a same respective frequency resource for the respective physical downlink shared channel grant. ### Claim 5 (depends on 1) The method of claim 1, further comprising activating or deactivating grant free resources based on downlink control information. ### Claim 6 (depends on 1) The method of claim 1, further comprising obtaining time and frequency resources for grant free transmission based on downlink control information. ### Claim 7 (depends on 1) The method of claim 1, further comprising transmitting control signaling for a grant free resource in uplink control information, wherein the transmission comprises user equipment identifier. ### Claim 8 An apparatus comprising: a processor; and memory coupled with the processor, the memory comprising executable instructions stored thereon that when executed by the processor cause the processor to effectuate operations comprising: monitoring in one or more monitoring occasions for control information, wherein the control information is received using a first beam, wherein the first beam is based on a physical downlink control channel (PDCCH) quasi co-located with a synchronization signal block (SSB); and based on the one or more monitoring occasions, receiving downlink control channel spatial information using the first beam, wherein the SSB is received using a second beam and the physical downlink control channel (PDCCH) transmission is received using the first beam, wherein the first beam and the second beam are received from a same direction and the SSB and PDCCH transmission are quasi co-located with respect to spatial quasi co-location parameters. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the apparatus is a wireless transmit/receive unit (WTRU). ### Claim 10 (depends on 8) The apparatus of claim 8, the operations further comprising obtaining multiple downlink control informations (DCIs), wherein each of the multiple DCIs indicate a respective physical downlink shared channel grant, wherein each of the multiple DCIs indicate a same respective frequency resource for the respective physical downlink shared channel grant. ### Claim 11 (depends on 8) The apparatus of claim 8, the operations further comprising activating or deactivating grant free resources based on downlink control information. ### Claim 12 (depends on 8) The apparatus of claim 8, the operations further comprising obtaining time and frequency resources for grant free transmission based on downlink control information. ### Claim 13 (depends on 8) The apparatus of claim 8, the operations further comprising transmitting control signaling for a grant free resource in uplink control information, wherein the transmission comprises user equipment identifier. ### Claim 14 (depends on 8) The apparatus of claim 8, the operations further comprising encoding together payload size, modulation coding scheme, and redundancy version in the control information. ### Claim 15 (depends on 8) The apparatus of claim 8, wherein the one or more monitoring occasions are configured using radio resource control (RRC) signaling. ### Claim 16 A computer readable storage medium storing computer executable instructions that when executed by a computing device cause said computing device to effectuate operations comprising: monitoring in one or more monitoring occasions for control information, wherein the control information is received using a first beam, wherein first beam is based on a physical downlink control channel (PDCCH) quasi co-located with a synchronization signal block (SSB); and based on the one or more monitoring occasions, receiving downlink control channel spatial information using the first beam, wherein the SSB is received using a second beam and the physical downlink control channel (PDCCH) transmission is received using the first beam, wherein the first beam and the second beam are received from a same direction and the SSB and PDCCH transmission are quasi co-located with respect to spatial quasi co-location parameters. ### Claim 17 (depends on 16) The computer readable storage medium of claim 16, wherein the one or more monitoring occasions are configured using radio resource control (RRC) signaling. ### Claim 18 (depends on 16) The computer readable storage medium of claim 16, the operations further comprising activating or deactivating grant free resources based on downlink control information. ### Claim 19 (depends on 16) The computer readable storage medium of claim 16, the operations further comprising obtaining time and frequency resources for grant free transmission based on downlink control information. ### Claim 20 (depends on 16) The computer readable storage medium of claim 16, the operations further comprising transmitting control signaling for a grant free resource in uplink control information, wherein the transmission comprises user equipment identifier.