# US 11,452,078 B2 · Method and apparatus for sidelink transmission and resource allocation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,452,078 B2 - Document ID: US11452078B2 - Status: Granted - Kind: B2 - Application number: 16/796,067 - Filed: 2020-02-20 - Published: 2020-08-27 - Granted: 2022-09-20 - Earliest claimed: 2019-02-22 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Yu Cao; Amine Maaref; Jianglei Ma; Yongxia Lyu - Web page: https://patentgrep.com/patent/US11452078B2 ## CPC - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04W 72/20: Control channels or signalling for resource management - H04L 1/0003: {by switching between different modulation schemes} - H04L 5/0033: {each allocating device acting autonomously, i.e. without negotiation with other allocating devices} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 4/44: for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H] - H04W 4/46: for vehicle-to-vehicle communication [V2V] - H04L 1/0023: {characterised by the signalling} - H04L 5/0012: {Hopping in multicarrier systems} - H04L 5/0026: {Division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL]} - 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 5/14: Two-way operation using the same type of signal, i.e. duplex - H04W 4/08: User group management - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 72/02: Selection of wireless resources by user or terminal - H04W 74/0816: with collision avoidance - 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 Method and devices are provided for wireless communication. A method involves obtaining, by a receive user equipment (UE), configuration information relating to a sidelink transmission between the first UE and a second UE, the configuration information for indicating to the first UE that the sidelink transmission is not associated with any corresponding sidelink control information (SCI). A further step involves receiving, by the receive UE, the sidelink transmission from the second UE using time and frequency resources indicated by the configuration information. Another method involves obtaining, by a transmit UE, configuration information relating to a sidelink transmission between the first UE and a second UE, the configuration information for indicating to the first UE that the sidelink transmission is not associated with any corresponding SCI and transmitting, by the first UE, the sidelink transmission to the second UE using time and frequency resources indicated by the configuration information. ## Claims ### Claim 1 A method comprising: receiving, by a first user equipment (UE) from a base station, configuration information, the configuration information comprising a plurality of sets of configuration parameters for sidelink (SL) data transmissions with at least one other UE, each set of the plurality of sets of configuration parameters having a corresponding configuration index that corresponds to an SL grant-free (GF) resource configuration; transmitting, by the first UE to a second UE, sidelink control information (SCI) used for indicating transmission resource information for scheduling a SL data transmission from the first UE to the second UE, wherein the SCI comprises a first configuration index identifying a first set of configuration parameters of the plurality of sets of configuration parameters for the SL data transmission, wherein the first configuration index in the SCI corresponds to a first SL GF resource configuration, and wherein the first set of configuration parameters corresponding to the SL first GF resource configuration includes a frequency resource, a periodicity, a number of hybrid automatic repeat request (HARQ) processes, and feedback channel parameters; and transmitting, by the first UE to the second UE, the SL data transmission. ### Claim 2 (depends on 1) The method of claim 1, wherein the transmitting the SL data transmission to the second UE further includes: transmitting the SL data transmission according to the first set of configuration parameters identified by the first configuration index. ### Claim 3 (depends on 1) The method of claim 1, wherein the each set of the plurality of sets of configuration parameters identified by the corresponding configuration index comprises a time resource information and a frequency resource information, and wherein the transmitting the SL data transmission to the second UE further includes: transmitting the SL data according to the time resource information and the frequency resource information. ### Claim 4 (depends on 1) The method of claim 1, wherein the first set of configuration parameters corresponding to the SL first GF resource configuration further includes at least one of: a transmission pattern or a pool of transmission patterns, a pattern window size, frequency hopping parameters, repetition K, a demodulation reference signal (DMRS) or a pool of DMRSs, a modulation and coding sequence (MCS) or a pool of MCSs, a redundancy version (RV) sequence or a pool or RVs, a destination identifier (ID), a source ID, an HARQ process ID, or a new data indicator (NDI). ### Claim 5 (depends on 1) The method of claim 1, further comprising: transmitting, by the first UE to a third UE, for sensing the SCI used for indicating the transmission resource information for scheduling the SL data transmission from the first UE to the second UE. ### Claim 6 (depends on 1) The method of claim 1, further comprising: selecting, by the first UE, the first set of configuration parameters from the plurality of sets of configuration parameters for indicating the transmission resource information for scheduling the SL data transmission from the first UE to the second UE. ### Claim 7 A user equipment (UE) comprising: at least one processor; a non-transitory computer-readable medium having stored thereon, computer-executable instructions, that when executed by the at least one processor, cause the UE to perform operations comprising: receiving, from a base station, configuration information, the configuration information comprising a plurality of sets of configuration parameters for sidelink (SL) data transmissions with at least one other UE, each set of the plurality of sets of configuration parameters having a corresponding configuration index that corresponds to an SL grant-free (GF) resource configuration; transmitting, to a second UE, sidelink control information (SCI) used for indicating transmission resource information for scheduling a SL data transmission from the UE to the second UE, wherein the SCI comprises a first configuration index identifying a first set of configuration parameters of the plurality of sets of configuration parameters for the SL data transmission, wherein the first configuration index in the SCI corresponds to a first GF SL resource configuration, and wherein the first set of configuration parameters corresponding to the SL first GF resource configuration includes a frequency resource, a periodicity, a number of hybrid automatic repeat request (HARQ) processes, and feedback channel parameters; and transmitting, to the second UE, the SL data transmission. ### Claim 8 (depends on 7) The UE of claim 7, wherein the transmitting the SL data transmission to the second UE includes: transmitting the SL data transmission according to the first set of configuration parameters identified by the first configuration index. ### Claim 9 (depends on 7) The UE of claim 7, wherein the each set of the plurality of sets of configuration parameters identified by the corresponding configuration index comprises a time resource information and a frequency resource information, and wherein the transmitting the SL data transmission to the second UE further includes: transmitting the SL data according to the time resource information and the frequency resource information. ### Claim 10 (depends on 7) The UE of claim 7, wherein the first set of configuration parameters corresponding to the first SL GF resource configuration further includes at least one of: a transmission pattern or a pool of transmission patterns, a pattern window size, frequency hopping parameters, repetition K, a demodulation reference signal (DMRS) or a pool of DMRSs, a modulation and coding sequence (MCS) or a pool of MCSs, a redundancy version (RV) sequence or a pool or RVs, a destination identifier (ID), a source ID, an HARQ process ID, or a new data indicator (NDI). ### Claim 11 (depends on 7) The UE of claim 7, the operations further comprising: transmitting, to a third UE, for sensing the SCI used for indicating the transmission resource information for scheduling the SL data transmission from the UE to the second UE. ### Claim 12 (depends on 7) The UE of claim 7, the operations further comprising: selecting the first set of configuration parameters from the plurality of sets of configuration parameters for indicating the transmission resource information for scheduling the SL data transmission from the UE to the second UE. ### Claim 13 A method comprising: receiving, by a first user equipment (UE) from a base station, configuration information, the configuration information comprising a plurality of sets of configuration parameters for sidelink (SL) data transmissions between at least two UEs, each set of the plurality of sets of configuration parameters having a corresponding configuration index that corresponds to an SL grant-free (GF) resource configuration; receiving, by the first UE from a second UE, sidelink control information (SCI) used for indicating transmission resource information for scheduling a SL data transmission from the second UE, wherein the SCI comprises a first configuration index identifying a first set of configuration parameters of the plurality of sets of configuration parameters for the SL data transmission, wherein the first configuration index in the SCI corresponds to a first SL GF resource configuration, and wherein the first set of configuration parameters corresponding to the SL first GF resource configuration includes a frequency resource, a periodicity, a number of hybrid automatic repeat request (HARQ) processes, and feedback channel parameters; decoding, by the first UE, the SCI; and determining, by the first UE, a location in a transmission resource where the SL data transmission is transmitted by the second UE based on the SCI decoded by the first UE. ### Claim 14 (depends on 13) The method of claim 13, wherein the determining the location in the transmission resource where the SL data transmission is transmitted by the second UE based on the SCI decoded by the first UE comprises: determining the location according to the first set of configuration parameters identified by the first configuration index. ### Claim 15 (depends on 13) The method of claim 13, wherein the each set of the plurality of sets of configuration parameters identified by the corresponding configuration index comprises a time resource information and a frequency resource information, and wherein the receiving the SL data transmission from the second UE further includes: receiving the SL data according to the time resource information and the frequency resource information. ### Claim 16 (depends on 13) The method of claim 13, wherein the first set of configuration parameters corresponding to the first SL GF resource configuration further includes at least one of: a transmission pattern or a pool of transmission patterns, a pattern window size, frequency hopping parameters, repetition K, a demodulation reference signal (DMRS) or a pool of DMRSs, a modulation and coding sequence (MCS) or a pool of MCSs, a redundancy version (RV) sequence or a pool of RVs, a destination identifier (ID), a source ID, an HARQ process ID, or a new data indicator (NDI). ### Claim 17 (depends on 13) The method of claim 13, further comprising: when the first UE determines the SL data transmission is intended for the first UE, decoding, by the first UE, the SL data transmission received from the second UE based on information in the SCI decoded by the first UE. ### Claim 18 (depends on 13) The method of claim 13, further comprising: selecting, by the first UE, a second transmission resource different than the transmission resource identified by the SCI decoded by the first UE for communication between the first UE and a third UE. ### Claim 19 A user equipment (UE) comprising: at least one processor; a non-transitory computer-readable medium having stored thereon, computer-executable instructions, that when executed by the at least one processor, cause the UE to perform operations comprising: receiving, from a base station, configuration information, the configuration information comprising a plurality of sets of configuration parameters for sidelink (SL) data transmissions between at least two UEs, each set of the plurality of sets of configuration parameters having a corresponding configuration index that corresponds to an SL grant-free (GF) resource configuration; receiving, from a second UE, sidelink control information (SCI) used for indicating transmission resource information for scheduling a SL data transmission from the second UE, wherein the SCI comprises a first configuration index identifying a first set of configuration parameters of the plurality of sets of configuration parameters for the SL data transmission, wherein the first configuration index in the SCI corresponds to a first SL GF resource configuration, and wherein the first set of configuration parameters corresponding to the SL first GF resource configuration includes a frequency resource, a periodicity, a number of hybrid automatic repeat request (HARQ) processes, and feedback channel parameters; decoding the SCI; and determining a location in a transmission resource where the SL data transmission is transmitted by the second UE based on the SCI decoded by the UE. ### Claim 20 (depends on 19) The UE of claim 19, wherein the determining the location in the transmission resource where the SL data transmission is transmitted by the second UE based on the SCI decoded by the UE comprises: determining the location according to the first set of configuration parameters identified by the first configuration index. ### Claim 21 (depends on 19) The UE of claim 19, wherein the each set of the plurality of sets of configuration parameters identified by the corresponding configuration index comprises a time resource information and a frequency resource information, and wherein the receiving the SL data transmission from the second UE further includes: receiving the SL data according to the time resource information and the frequency resource information. ### Claim 22 (depends on 19) The UE of claim 19, wherein the first set of configuration parameters corresponding to the first SL GF resource configuration includes at least one of: a transmission pattern or a pool of transmission patterns, a pattern window size, frequency hopping parameters, repetition K, a demodulation reference signal (DMRS) or a pool of DMRSs, a modulation and coding sequence (MCS) or a pool of MCSs, a redundancy version (RV) sequence or a pool of RVs, a destination identifier (ID), a source ID, an HARQ process ID, or a new data indicator (NDI). ### Claim 23 (depends on 19) The UE of claim 19, the operations further comprising: when the UE determines the SL data transmission is intended for the UE, decode the SL data transmission received from the second UE based on the SCI decoded by the UE. ### Claim 24 (depends on 19) The UE of claim 19, the operations further comprising: select a second transmission resource different than the transmission resource identified by the SCI decoded by the UE for communication between the UE and a third UE. ### Claim 25 (depends on 1) The method of claim 1, wherein the SCI indicate slot aggregation. ### Claim 26 (depends on 1) The method of claim 1, wherein the second UE receives second configuration information comprising the plurality of sets of configuration parameters, and wherein the second UE determines a location in a transmission resource where the SL data transmission is transmitted by the first UE based on the first configuration index and the plurality of sets of configuration parameters. ### Claim 27 (depends on 1) The method of claim 1, wherein the first UE transmits the SCI based on determining: that the first UE is not configured with a transmission pattern, a pool of transmission patterns, an MCS, or a pool of MCSs, that the first UE is not configured with an association of parameters, that the first UE is configured with an SCI resource, or that the first UE is not configured with quality of service (QoS).