Abstract: The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE first receives a first radio signal and a second radio signal, and then transmits a third radio signal. The first radio signal is used for determining a first signature sequence, and a receiving timing of the second radio signal is used for determining a transmitting timing of the third radio signal. The first signature sequence is used for generating the third radio signal. The first radio signal and the second radio signal are associated with a first synchronization sequence and a second synchronization sequence respectively, and the first synchronization sequence is different from the second synchronization sequence. According to the disclosure, through the designs of the first radio signal and the second radio signal, thereby improving system performances and transmission efficiency.

Abstract: A method and a device in a communication node used for wireless communications is disclosed in the present disclosure. The communication node first receives first information and second information; and transmits a first radio signal in a first time window; and then transmits a second radio signal; the first information is used to determine a target time window, the second radio signal occupies a second time window in time domain, and the second information is used to determine at least one of whether the second time window belongs to the target time window or a relative position relationship between the second time window and the target time window; an end of the first time window is earlier than a start of the target time window. The present disclosure helps improve the utilization ratio of resources in Grant-Free transmission.

Abstract: The present disclosure discloses a UE and a base station used for wireless communications. The UE receives Q control signaling groups respectively in Q time windows; receives a first control signaling that is used for determining Q1 time window(s) out of the Q time windows; and performs energy detection to determine whether to transmit on a first time-frequency resource; herein, any of the Q control signaling groups comprises a first field; any control signaling comprised by the Q control signaling groups comprises a first field; first fields comprised by control signalings in any of the Q control signaling groups are of a same value; among any Q2 adjacent control signaling groups of the Q control signaling groups, any two control signaling groups comprise first fields of different values; the first radio signal comprises first feedback information. The present disclosure not only ensures HARQ-ACK transmission but reduces signaling overhead redundancy.

Abstract: The present disclosure provides a method and a device in a communication node used for wireless communications. A communication node receives first information and second information; and transmits a first radio signal, an SCS of a subcarrier occupied by the first radio signal is equal to a first SCS; a sum of a first timing adjustment and a second timing adjustment is used to determine a transmission timing for the first radio signal, and the first timing adjustment is used to determine a transmission timing for a radio signal transmitted earlier than the first radio signal; the second timing adjustment is equal to a sum of a first sub-adjustment and a second sub-adjustment, the first information is used to determine the first sub-adjustment, and the second information is used to determine the second sub-adjustment. The present disclosure improves scheduling flexibility.

Abstract: The present disclosure provides a method and a device in nodes used for wireless communication. A first receiver, receiving a first DCI group, which comprises at least one piece of DCI; a first transmitter, transmitting a first signal, which carries a first HARQ-ACK bit sequence; herein, for any DCI in the first DCI group, a first field comprised is used to indicate an accumulated number of cell(s) scheduled by first-type DCI in a first resource pool as of a current reference cell and a current time interval; the current reference cell is a cell having a default cell index of cell(s) scheduled by the DCI in the first DCI group, time-domain resources occupied by the DCI in the first DCI group belong to the current time interval, and at least one piece of DCI in the first DCI group schedules more than one cell.

Abstract: A method and device for wireless communications, comprising receiving a first signaling; the first signaling comprising a first cell identity, the first cell identity being configured to a target Special Cell (SpCell); detecting a first event; herein, the first event belongs to a first candidate event set, the first candidate event set comprises at least one of a first timer being expired, receiving an indication of MAC of an MCG related to a problem occurring in random access procedure, receiving an indication of RLC of an MCG related to reaching a maximum number of retransmissions, or receiving an indication of MAC of an MCG related to continuous uplink listen before talk (LBT) failure; the behavior of detecting whether a first event triggers radio link failure is related to whether there is an ongoing first signaling procedure. The present application can achieve better mobility management through a first signaling.

Abstract: The present application discloses a method and device in a node for wireless communications. A first node receives a reference signal in a first reference signal resource sub-pool; determines a first function according to the receiving behavior in the first reference signal resource sub-pool; transmits a first information block, the first information block being used to determine the first function; receives a second information block, the second information block being used to determine whether a target reference signal resource is associated with the first function; and transmits a third information block, the third information block indicating a first compressed CSI, the first compressed CSI being an input to the first function for generating a first CSI.

Abstract: The present application discloses a method and a device for wireless communications, including: receiving a first signal, the first signal comprising a first message; and determining a synchronization reference according to at least whether the first message is transmitted via a direct path; the first message indicating a first sidelink frequency list, the first sidelink frequency list comprising a first frequency, which is used for sidelink communication; and receiving a first synchronization signal from the synchronization reference determined; and transmitting a second synchronization signal; a reception timing for the first synchronization signal being used to determine a transmission timing of the second synchronization signal. By receiving the first message and first synchronization signal, the present application can determine the synchronization reference correctly.

Abstract: The present disclosure provides a method and a device in wireless transmission. A User Equipment (UE) first receives a first signaling, and then receives a first radio signal, the first radio signal carrying a first bit block. The first signaling is used for determining a transmission format corresponding to the first radio signal. The transmission format corresponding to the first radio signal is one transmission format in a first format set, and the first format set comprises a first transmission format and a second transmission format. A radio signal corresponding to the first transmission format includes P radio sub-signal(s), each one of the P radio sub-signal(s) carries the first bit block, and the P radio sub-signal(s) is(are) transmitted by a same antenna port group.

Abstract: A first node receives a first signaling; receives a second signaling; and transmits a first bit block in a target radio resource block. A first sub-bit-block and a second sub-bit-block are used to generate the first bit block, the first sub-bit-block being associated with the first signaling, and the second sub-bit-block being associated with the second signaling; the second signaling is used to indicate the target radio resource block from a target radio resource block set, the target radio resource block being a radio resource block comprised in the target radio resource block set; size of the second sub-bit-block is used to determine a reference radio resource block set; the second signaling is used to indicate a first index, and the first index is used jointly with the reference radio resource block set to determine the target radio resource block set, the first index being an integer.

Abstract: The disclosure provides a method and a device used in a node for wireless communication. A first node first transmits a first sequence and a first radio signal, at least one of the first sequence or the first radio signal carrying a target identifier, then monitors a first type of information in a first time window, and finally transmits a second sequence and a second radio signal when no feedback is detected for the first sequence and the first radio signal in the first time window; wherein at least one of the second sequence or the second radio signal carries the target identifier. Through the above design, the disclosure realizes re-transmissions of a preamble and information included in a Message A in 2-step random access scenarios, thereby improving the spectrum efficiency and improving the performance of transmission of the Message A in 2-step random access scenarios.

Abstract: The present disclosure provides a method and device for multi-antenna transmission in UE and base station. The user equipment receives a first wireless signal at first; then transmits a second wireless signal, and monitors a first signaling in a first sub-time resource pool. Wherein the first wireless signal is transmitted by K antenna port group(s) and the second wireless signal is used to determine the first antenna port group. The first antenna port group is one of the K antenna port group(s). The first sub-time resource pool is reserved to the first antenna port group, or the index of the first antenna port group is used to determine the first sub-time resource pool. One antenna port group includes positive integer number of antenna ports, and the K is a positive integer greater than 1. The disclosure reduces the complexity of blind detection of downlink signaling by the UE.

Abstract: The present disclosure discloses a method and a device in communication nodes for wireless communications. In a first node, a successful transmission of a first packet is acknowledged by a first entity, the first entity being used for unicast; a second entity being used for non-unicast does not indicate that the second entity deletes a duplicated first packet; the second entity being used for unicast indicates that the second entity deletes a duplicated first packet; herein, the first entity and the second entity are associated with a same higher layer entity. The present disclosure helps avoid deleting a same packet repeatedly transmitted through multicast, thus ensuring the continuity of traffics received by multicast, which further reduces higher layer retransmissions triggered by deletion of the packet, thus decreasing traffic delay.

Abstract: The present disclosure provides method and device for wireless communications in sidelink. A first node receives a first signaling and a first radio signal, the first signaling indicating a first priority; determines whether to transmit a second signaling jointly according to a current value of a first counter and the first priority; when determining to transmit the second signaling, transmits the second signaling and updates the first counter's value with an initial value; when determining not to transmit the second signaling, drops transmitting the second signaling and updates the first counter's value by 1; herein, the first signaling comprises configuration information of the first radio signal. The present disclosure addresses the RLF triggered by the data-transmitting device due to the influence of the Half Duplex and/or transmitting capability of the V2X UE, thus enhancing the link robustness.

Abstract: Discloser a method and a device for wireless communications, including: transmitting a first MAC PDU, the first MAC PDU comprising a first MAC header and a first MAC subPDU, the first MAC subPDU comprising a first MAC sub-header and a first MAC SDU, the first MAC SDU comprising a first PDCP PDU; the first PDCP PDU being a PDCP PDU of a sidelink RB; herein, a target parameter is used for security algorithm of the first PDCP PDU; whether the target parameter is a LCID is related to whether the first node is a generator of the first PDCP PDU; when the first node is the generator of the first PDCP PDU, the target parameter is a LCID; when the first node is not the generator of the first PDCP PDU, the target parameter is not a LCID. The present application can better ensure security using a target parameter.

Abstract: The present application provides a method and device for wireless communications. The first node transmits a first radio signal, the first radio signal carries a first data unit; receives a first status report, the first status report indicates whether the first data unit set is successfully received; maintains a first variable of the first data unit; maintains a second variable; herein, the first status report indicates a negative confirmation for the first data unit; the maintaining a first variable of the first data unit comprises: when the first data unit is considered a first retransmission, setting a value of a first variable of the first data unit to 0; the maintaining a second variable comprises: when all conditions in the first condition set are met, a value of the second variable being increased by 1. The present application effectively monitors radio link.

Abstract: The present application discloses a method and a device in a node for wireless communications. A first receiver detects a first signaling on a first serving cell, the first signaling having a first-type DCI format, the first-type DCI format being used for scheduling PDSCH(s) on at most more than one serving cell; and a first transmitter, generates K HARQ-ACK bit(s) for scheduling of the first signaling; where the first serving cell is one of N serving cells, N being greater than 1, where each serving cell among the N serving cells is configured with the first-type DCI format; K is dependent on a configuration for the first-type DCI format on each serving cell among the N serving cells.

Abstract: A method and a device for sidelink wireless communications are disclosed by the present disclosure. A first node receives a third radio signal and a first radio signal set, the third radio signal comprising first information; herein, the first information comprises a node ID group and a first configuration; the node ID group comprises Q node IDs, Q being a positive integer greater than 1; the first configuration comprises a first parameter set; one of the Q node IDs is used for identifying the third radio signal's transmitter; the first parameter set is used for configuring RB of the first node; a transmitter of the first radio signal set is identified by one of the Q node IDs; or transmitters of Q1 radio signals in the first radio signal set are respectively identified by Q1 node IDs out of the Q node IDs.

Abstract: The present application provides a method and device for wireless communications. A first node receives a first data unit at a MAC sublayer; receives a first signaling, the first signaling indicates a first time-domain resource, the first time-domain resource is reserved for retransmission of a first MAC PDU, the first MAC PDU comprises the first data unit; wherein a first time length is a length of a time interval between a reception of the first data unit and the first time-domain resource, whether to transmit first control information depends on a size relation between the first time length and a first time threshold; the first control information is used to indicate dropping retransmission of the first MAC PDU. The present application can effectively improve radio efficiency, reduce transmission delay, and reduce power consumption of the UE.

Abstract: The present disclosure provides a method and device in a node used for wireless communications. A first node receives a first signaling; and transmits a first signal; the first signaling is used for determining configuration information of the first signal; the first signaling is used for determining a first information unit, the first information unit comprises a first field, the first field in the first information unit indicates a first reference-signal resource, and the first reference-signal resource is used for determining a spatial-domain filter of the first signal; a first power control parameter group is used for determining transmission power of the first signal. The above method unifies Uplink beam management mechanism and Downlink beam management mechanism, and solves the power control problem of Uplink transmission under a unified beam management mechanism.