# US 2020/0396754 A1 · Method and device for wireless communication in ue and base station > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0396754 A1 - Document ID: US20200396754A1 - Status: Published application - Kind: A1 - Application number: 17/005,308 - Filed: 2020-08-27 - Published: 2020-12-17 - Earliest claimed: 2018-03-06 - Assignees: Shanghai Langbo Communication Technology Company Limited - Inventors: Keying WU; Xiaobo ZHANG - Web page: https://patentgrep.com/patent/US20200396754A1 ## CPC - H04L 5/0078: {Timing of allocation} - H04W 72/1268: of uplink data flows - H04B 7/0617: {for beam forming} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/12: Wireless traffic scheduling - H04L 5/0023: {Time-frequency-space} - 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 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/0057: {Physical resource allocation for CQI} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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) - H04B: TRANSMISSION ## Abstract The present disclosure provides a method and a device in a User Equipment (UE) and a base station used for wireless communication. The UE receives a first signaling in a first time window in a first subband; monitors a second signaling in a second time window in a second subband; if successfully receives the second signaling in the second time window in the second subband, transmits a first radio signal in a third time window in a third subband, otherwise drops transmission of the first radio signal in the third time window in the third subband. Herein, the first signaling comprises first-type scheduling information of the first radio signal. The above method allows the base station to flexibly control a transmission time of each uplink transmission on unlicensed spectrum according to specific conditions, such as the result of LBT or the direction of beamforming. ## Claims ### Claim 1 A method in a User Equipment (UE) for wireless communication, comprising: receiving a first signaling in a first time window in a first subband; and monitoring a second signaling in a second time window in a second subband; if successfully receiving the second signaling in the second time window in the second subband, transmitting a first radio signal in a third time window in a third subband, otherwise, dropping transmission of the first radio signal in the third time window in the third subband; wherein the first signaling comprises first-type scheduling information of the first radio signal; the first signaling indicates a time interval between the third time window and the second time window; the first signaling is associated with the second signaling; the first signaling is used for determining a first antenna port group, and the second signaling is used for determining a first port group set; the first port group set comprises a positive integer number of antenna port group(s), and one antenna port group comprises a positive integer number of antenna port(s); the first antenna port group is used for determining a first index, and the first port group set is used for determining M index(es), the M being a positive integer; the phrase that the first signaling is associated with the second signaling refers to that the first index is one of the M index(es). ### Claim 2 (depends on 1) The method according to claim 1, wherein the first signaling indicates a time interval between the third time window and a reference time window; the first signaling comprises a first field, the first field indicating whether the reference time window is the first time window; and the first field in the first signaling indicates that the reference time window is not the first time window; or, the first signaling indicates a time interval between the third time window and a reference time window; the first signaling comprises a first field, the first field indicating whether the reference time window is the first time window; the first field in the first signaling indicates that the reference time window is not the first time window; the second signaling comprises a second field, the second field indicating whether the reference time window is the second time window; and the second field in the second signaling indicates that the reference time window is the second time window; or, time-frequency resources occupied by the first signaling and time-frequency resources occupied by the second signaling belong to a same time-frequency resource pool, the same time-frequency resource pool comprising a positive integer number of Resource Elements (REs). ### Claim 3 (depends on 1) The method according to claim 1, comprising: receiving a second radio signal; wherein the first signaling comprises second-type scheduling information of the second radio signal; the first radio signal is used for determining whether the second radio signal is correctly received, or a measurement performed on the second radio signal is used for determining the first radio signal. ### Claim 4 (depends on 1) The method according to claim 1, wherein the second signaling is cell-common; or, the second signaling is terminal-group-specific. ### Claim 5 (depends on 1) The method according to claim 1, wherein the first signaling and the second signaling occupy a same time slice in time domain, the same time slice comprising a positive integer number of multicarrier symbol(s); or, comprising: receiving a third signaling; wherein the first signaling and the second signaling occupy a same time slice in time domain, the same time slice comprising a positive integer number of multicarrier symbol(s); the third signaling indicates that a first multicarrier symbol group is occupied, the first multicarrier symbol group comprising a positive integer number of multicarrier symbol(s); and the same time slice belongs to the first multicarrier symbol group. ### Claim 6 A method in a base station for wireless communication, comprising: transmitting a first signaling in a first time window in a first subband; and transmitting a second signaling in a second time window in a second subband, or dropping transmission of the second signaling in the second time window in the second subband; if transmitting the second signaling in the second time window in the second subband, receiving a first radio signal in a third time window in a third subband, otherwise dropping reception of the first radio signal in the third time window in the third subband. wherein the first signaling comprises first-type scheduling information of the first radio signal; the first signaling indicates a time interval between the third time window and the second time window; the first signaling is associated with the second signaling; the first signaling is used for determining a first antenna port group, and the second signaling is used for determining a first port group set; the first port group set comprises a positive integer number of antenna port group(s), and one antenna port group comprises a positive integer number of antenna port(s); the first antenna port group is used for determining a first index, and the first port group set is used for determining M index(es), the M being a positive integer; the phrase that the first signaling is associated with the second signaling refers to that the first index is one of the M index(es). ### Claim 7 (depends on 6) The method according to claim 6, wherein the first signaling indicates a time interval between the third time window and a reference time window; the first signaling comprises a first field, the first field indicating whether the reference time window is the first time window; and the first field in the first signaling indicates that the reference time window is not the first time window; or, the first signaling indicates a time interval between the third time window and a reference time window; the first signaling comprises a first field, the first field indicating whether the reference time window is the first time window; the first field in the first signaling indicates that the reference time window is not the first time window; the second signaling comprises a second field, the second field indicating whether the reference time window is the second time window; and the second field in the second signaling indicates that the reference time window is the second time window; or, time-frequency resources occupied by the first signaling and time-frequency resources occupied by the second signaling belong to a same time-frequency resource pool, the same time-frequency resource pool comprising a positive integer number of REs. ### Claim 8 (depends on 6) The method according to claim 6, comprising: transmitting a second radio signal; wherein the first signaling comprises second-type scheduling information of the second radio signal; the first radio signal is used for determining whether the second radio signal is correctly received, or a measurement performed on the second radio signal is used for determining the first radio signal. ### Claim 9 (depends on 6) The method according to claim 6, wherein the second signaling is cell-common; or, the second signaling is terminal-group-specific. ### Claim 10 (depends on 6) The method according to claim 6, wherein the first signaling and the second signaling occupy a same time slice in time domain, the same time slice comprising a positive integer number of multicarrier symbol(s); or, comprising: transmitting a third signaling; wherein the first signaling and the second signaling occupy a same time slice in time domain, the same time slice comprising a positive integer number of multicarrier symbol(s); the third signaling indicates that a first multicarrier symbol group is occupied, the first multicarrier symbol group comprising a positive integer number of multicarrier symbol(s); and the same time slice belongs to the first multicarrier symbol group. ### Claim 11 A UE for wireless communications, comprising: a first receiver, receiving a first signaling in a first time window in a first subband; a second receiver, monitoring a second signaling in a second time window in a second subband; and a first processor, if successfully receiving the second signaling in the second time window in the second subband, transmitting a first radio signal in a third time window in a third subband, otherwise dropping transmission of the first radio signal in the third time window in the third subband; wherein the first signaling comprises first-type scheduling information of the first radio signal; the first signaling indicates a time interval between the third time window and the second time window; the first signaling is associated with the second signaling; the first signaling is used for determining a first antenna port group, and the second signaling is used for determining a first port group set; the first port group set comprises a positive integer number of antenna port group(s), and one antenna port group comprises a positive integer number of antenna port(s); the first antenna port group is used for determining a first index, and the first port group set is used for determining M index(es), the M being a positive integer; the phrase that the first signaling is associated with the second signaling refers to that the first index is one of the M index(es). ### Claim 12 (depends on 11) The UE according to claim 11, wherein the first signaling indicates a time interval between the third time window and a reference time window; the first signaling comprises a first field, the first field indicating whether the reference time window is the first time window; and the first field in the first signaling indicates that the reference time window is not the first time window; or, the first signaling indicates a time interval between the third time window and a reference time window; the first signaling comprises a first field, the first field indicating whether the reference time window is the first time window; the first field in the first signaling indicates that the reference time window is not the first time window; the second signaling comprises a second field, the second field indicating whether the reference time window is the second time window; and the second field in the second signaling indicates that the reference time window is the second time window; or, time-frequency resources occupied by the first signaling and time-frequency resources occupied by the second signaling belong to a same time-frequency resource pool, the same time-frequency resource pool comprising a positive integer number of REs. ### Claim 13 (depends on 11) The UE according to claim 11, wherein the first processor receives a second radio signal; wherein the first signaling comprises second-type scheduling information of the second radio signal; the first radio signal is used for determining whether the second radio signal is correctly received, or a measurement performed on the second radio signal is used for determining the first radio signal. ### Claim 14 (depends on 11) The UE according to claim 11, wherein the second signaling is cell-common; or, the second signaling is terminal-group-specific. ### Claim 15 (depends on 11) The UE according to claim 11, wherein the first signaling and the second signaling occupy a same time slice in time domain, the same time slice comprising a positive integer number of multicarrier symbol(s); or, the second receiver receives a third signaling; wherein the first signaling and the second signaling occupy a same time slice in time domain, the same time slice comprising a positive integer number of multicarrier symbol(s); the third signaling indicates that a first multicarrier symbol group is occupied, the first multicarrier symbol group comprising a positive integer number of multicarrier symbol(s); and the same time slice belongs to the first multicarrier symbol group. ### Claim 16 A base station for wireless communication, comprising: a first transmitter, transmitting a first signaling in a first time window in a first subband; a second transmitter, transmitting a second signaling in a second time window in a second subband, or dropping transmission of the second signaling in the second time window in the second subband; and a second processor, if transmitting the second signaling in the second time window in the second subband, receiving a first radio signal in a third time window in a third subband, otherwise dropping reception of the first radio signal in the third time window in the third subband; wherein the first signaling comprises first-type scheduling information of the first radio signal; the first signaling indicates a time interval between the third time window and the second time window; the first signaling is associated with the second signaling; the first signaling is used for determining a first antenna port group, and the second signaling is used for determining a first port group set; the first port group set comprises a positive integer number of antenna port group(s), and one antenna port group comprises a positive integer number of antenna port(s); the first antenna port group is used for determining a first index, and the first port group set is used for determining M index(es), the M being a positive integer; the phrase that the first signaling is associated with the second signaling refers to that the first index is one of the M index(es). ### Claim 17 (depends on 16) The base station according to claim 16, wherein the first signaling indicates a time interval between the third time window and a reference time window; the first signaling comprises a first field, the first field indicating whether the reference time window is the first time window; and the first field in the first signaling indicates that the reference time window is not the first time window; or, the first signaling indicates a time interval between the third time window and a reference time window; the first signaling comprises a first field, the first field indicating whether the reference time window is the first time window; the first field in the first signaling indicates that the reference time window is not the first time window; the second signaling comprises a second field, the second field indicating whether the reference time window is the second time window; the second field in the second signaling indicates that the reference time window is the second time window; or, time-frequency resources occupied by the first signaling and time-frequency resources occupied by the second signaling belong to a same time-frequency resource pool, the same time-frequency resource pool comprising a positive integer number of REs. ### Claim 18 (depends on 16) The base station according to claim 16, wherein the second processor transmits a second radio signal; wherein the first signaling comprises second-type scheduling information of the second radio signal; the first radio signal is used for determining whether the second radio signal is correctly received, or a measurement performed on the second radio signal is used for determining the first radio signal. ### Claim 19 (depends on 16) The base station according to claim 16, wherein the second signaling is cell-common; or, the second signaling is terminal-group-specific. ### Claim 20 (depends on 16) The base station according to claim 16, wherein the first signaling and the second signaling occupy a same time slice in time domain, the same time slice comprising a positive integer number of multicarrier symbol(s); or, the second transmitter transmits a third signaling; wherein the first signaling and the second signaling occupy a same time slice in time domain, the same time slice comprising a positive integer number of multicarrier symbol(s); the third signaling indicates that a first multicarrier symbol group is occupied, the first multicarrier symbol group comprising a positive integer number of multicarrier symbol(s); and the same time slice belongs to the first multicarrier symbol group.