# US 2021/0345385 A1 · Uplink Control Information for Unlicensed Operation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345385 A1 - Document ID: US20210345385A1 - Status: Published application - Kind: A1 - Application number: 17/280,512 - Filed: 2019-09-27 - Published: 2021-11-04 - Earliest claimed: 2018-09-28 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (PUBL) - Inventors: Reem KARAKI; Jung-Fu CHENG - Web page: https://patentgrep.com/patent/US20210345385A1 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - 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 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1268: of uplink data flows - H04L 27/0006: {Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio (for spectrum sharing between different networks H04W16/14)} - 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 A method performed by a wireless device (410) includes transmitting an uplink, UL, burst to a network node (460). The UL burst includes UL control information, UCI, multiplexed in a Physical Uplink Shared Channel, PUSCH. The UCI carries one or more parameters for unlicensed operation, and the UL burst has an associated UL burst structure. The UL burst structure includes a first slot, a full slot, and a last slot. ## Claims ### Claim at position 1 1-54. (canceled) ### Claim 55 A method performed by a wireless device, the method comprising: transmitting an uplink (UL) burst to a network node, the UL burst comprising UL control information, UCI, multiplexed in a Physical Uplink Shared Channel, PUSCH, the UCI carrying one or more parameters for unlicensed operation, the UL burst having an associated UL burst structure, the UL burst structure comprising a first slot, a full slot, and a last slot, wherein each of the first slot, the full slot, and the last slot comprise an associated pattern of one or more demodulation reference signals. ### Claim 56 (depends on 55) The method of claim 55, wherein the first slot comprises one or more mini slots and Type B scheduling is used for PUSCH transmission within the first slot. ### Claim 57 (depends on 55) The method of claim 55, wherein the first slot and/or the last slot is the full slot. ### Claim 58 (depends on 55) The method of claim 55, wherein a PUSCH transmission occupies less than all of the last slot. ### Claim 59 (depends on 55) The method of claim 55 comprising receiving a configuration for one or more ending positions that apply to the last slot of the UL burst. ### Claim 60 (depends on 55) The method of claim 55, wherein: the first slot comprises one or more mini-slots, and each mini-slot of the first slot comprises a single demodulation reference signal; the full slot comprises one or more slots, and each slot of the full slot comprises a single demodulation reference signal; and the last slot comprises a single demodulation reference signal. ### Claim 61 (depends on 55) The method of claim 55, wherein each associated pattern of one or more demodulation reference signals is indicative of a slot type, the slot type comprising one of the first slot, the full slot, and the last slot. ### Claim 62 (depends on 55) The method of claim 55, wherein: the pattern of one or more demodulation reference signals associated with the first slot indicates that the slot type is a first slot; the pattern of one or more demodulation reference signals associated with the full slot indicates that the slot type is a full slot; and the pattern of one or more demodulation reference signals associated with the last slot indicates that the slot type is a last slot. ### Claim 63 (depends on 61) The method of claim 61, wherein the pattern for the one or more demodulation reference signals is indicative of an associated mapping for a location of the UCI. ### Claim 64 (depends on 55) The method of claim 55, wherein each pattern of one or more demodulation reference signals associated with each of the first slot, the full slot, and the last slot is the same. ### Claim 65 (depends on 55) The method of claim 55, wherein: the pattern of one or more demodulation reference signals associated with the first slot comprises a first pattern; and one or more of the pattern of one or more demodulation reference signals associated with the full slot and the pattern of demodulation reference signals associated with the last slot comprises a subset of demodulation reference signals included in the first pattern. ### Claim 66 A method performed by a base station, the method comprising: receiving an uplink, UL, burst from a wireless device, the UL burst comprising UL control information, UCI, multiplexed in a Physical Uplink Shared Channel, PUSCH, the UCI carrying one or more parameters for unlicensed operation, the UL burst having an associated UL burst structure, the UL burst structure comprising a first slot, a full slot, and a last slot, wherein each of the first slot, the full slot, and the last slot comprise an associated pattern of one or more demodulation reference signals, the method further comprising: detecting the pattern of one or more demodulation reference signals in each of the first slot, the full slot, and the last slot; and determining the slot type based on the detected pattern of one or more demodulation reference signals in each of the first slot, the full slot, and the last slot. ### Claim 67 (depends on 66) The method of claim 66, wherein the first slot comprises one or more mini slots. ### Claim 68 (depends on 66) The method of claim 66, wherein the first slot and/or the last slot is the full slot. ### Claim 69 (depends on 66) The method of claim 66, wherein a PUSCH transmission occupies less than all of the last slot. ### Claim 70 (depends on 66) The method of claim 66, further comprising transmitting a configuration for one or more ending positions that apply to the last slot of the UL burst. ### Claim 71 (depends on 66) The method of claim 66, further comprising determining a starting point of each slot and mini-slot based on detection of the demodulation reference signal in each respective slot and mini-slot wherein: the first slot comprises one or more mini-slots, and each mini-slot of the first slot comprises a single demodulation reference signal; the full slot comprises one or more slots, and each slot of the full slot comprises a single demodulation reference signal; and the last slot comprises a single demodulation reference signal. ### Claim 72 (depends on 66) The method of claim 66, wherein the pattern for the one or more demodulation reference signals is indicative of an associated mapping for a location of the UCI, and the method further comprises mapping the UCI to the PUSCH. ### Claim 73 (depends on 66) The method of claim 66, wherein: the pattern of one or more demodulation reference signals associated with the first slot comprises a first pattern comprising more than one demodulation reference signal; and one or more of the pattern of one or more demodulation reference signals associated with the full slot and the pattern of one or more demodulation reference signals associated with the last slot comprises a subset of demodulation reference signals included in the first pattern, the method further comprising: detecting demodulation reference signals in the first pattern, the pattern of one or more demodulation reference signals associated with the full slot, and the pattern of one or more demodulation reference signals associated with the last slot; determining a number of demodulation reference signals in the first pattern, the pattern of one or more demodulation reference signals associated with the full slot, and the pattern of one or more demodulation reference signals associated with the last slot; and determining that the first pattern is associated with the first slot type based on the first pattern comprising a larger number of demodulation reference signals than the pattern of one or more demodulation reference signals associated with the full slot and the pattern of one or more demodulation reference signals associated with the last slot. ### Claim 74 (depends on 66) The method of claim 66, wherein each PUSCH transmission has an associated UCI, and the method further comprises: detecting one or more demodulation reference signals in the one or more mini-slots of the first slot in sequential order; decoding a first UCI of the first mini slot of the one or more mini-slots of the first slot; and determining a start and end of the first mini-slot based on the decoded first UCI. ### Claim 75 (depends on 74) The method of claim 74, further comprising performing blind detection for UCI presence in a next symbol after each demodulation reference signal symbol in each mini-slot. ### Claim 76 A wireless device configured to: transmit an uplink, UL, burst to a network node, the UL burst comprising UL control information, UCI, multiplexed in a Physical Uplink Shared Channel, PUSCH, the UCI carrying one or more parameters for unlicensed operation, the UL burst having an associated UL burst structure, the UL burst structure comprising a first slot, a full slot, and a last slot, wherein each of the first slot, the full slot, and the last slot comprise an associated pattern of one or more demodulation reference signals. ### Claim 77 A base station configured to: receive an uplink, UL, burst from a wireless device, the UL burst comprising UL control information, UCI, multiplexed in a Physical Uplink Shared Channel, PUSCH, the UCI carrying one or more parameters for unlicensed operation, the UL burst having an associated UL burst structure, the UL burst structure comprising a first slot, a full slot, and a last slot, wherein each of the first slot, the full slot, and the last slot comprise an associated pattern of one or more demodulation reference signals.