Abstract: The present disclosure provides a method used in User Equipment (UE). The UE is configured with a Master Cell Group (MCG) duplicated Signaling Radio Bearer (SRB). The MCG duplicated SRB is associated with an MCG and a Secondary Cell Group (SCG) and configured to be used for uplink transmission via the SCG. The method comprises: detecting an SCG failure; and reconfiguring the MCG duplicated SRB to be used for uplink transmission via the MCG, or triggering an MCG failure.

Abstract: The present disclosure provides a method performed by user equipment (LE), comprising receiving a configuration message, from a base station, the configuration message comprising information of two or more cell groups configured for a Packet Data Convergence Protocol (PDCP) packet duplication function. The method further comprises determining, according to a state of each cell in the two or more cell groups, whether conditions required for activation of the PDCP packet duplication function are satisfied. The method further comprises activation of the PDCP packet duplication function when the required conditions are satisfied. In addition, the present disclosure further provides a method performed by a base station and corresponding user equipment and a corresponding base station.

Abstract: Embodiments of the present invention provide a group communication method, system, group server, and group member device. A group server receives notification messages sent by a group member device, aggregates, according to an address of a subscription device, the notification messages destined for the same subscription device, and sends a notification message obtained after aggregation to the subscription device. By aggregating multiple messages sent by the group member device to the subscription device, messages exchanged between the group member device and the subscription device are reduced, thereby reducing communication traffic between the group member device and the subscription device.

Abstract: The present disclosure provides a method used in user equipment (UE). The method comprises: detecting that a radio link control (RLC) entity associated with a packet duplication bearer or packet duplication split bearer has reached a predetermined maximum number of retransmissions; and determining that a radio link associated with the RLC entity is unavailable or fails based on whether a cell associated with the RLC entity is a special cell (SpCell) or whether a cell group associated with the RLC entity includes an SpCell.

Abstract: The present disclosure provides a method used in user equipment, comprising: receiving an indication for enabling a sub-physical resource block enhancement mode from a base station through a media access control (MAC) random access response (RAR) or radio resource control signaling, wherein one or more bits in the MAC RAR indicate that the sub-physical resource block enhancement mode is to be applied to transmission of a random access message 3 “Msg3” and subsequent PUSCHs; enabling the sub-physical resource block enhancement mode in response to the indication, and receiving downlink control information (DCI) from the base station, the DCI comprising a subcarrier indication field indicating the number of subcarriers used for a physical uplink shared channel (PUSCH) and locations of the subcarriers; and transmitting the PUSCH according to the subcarrier indication field.

Abstract: The present disclosure provides a method for obtaining supplementary system information, and a corresponding user equipment and a base station. A method in the user equipment according to the present invention comprises: sending a leader sequence to a base station to request supplementary system information; and receiving a reply message from the base station in response to sending of the leader sequence.

Abstract: The present application provides a method for establishing/reconfiguring a data hearer, comprising: receiving a request message for data bearer establishment/reconfiguration, wherein the request message comprises a data bearer identity used to identify a data bearer and a bearer type indication cell used to indicate a type of a to-be-established/reconfigured data bearer; and establishing/reconfiguring a corresponding data hearer according to the request message. The present application further provides user equipment and a base station for establishing/reconfiguring a data bearer.

Abstract: The present application provides a method executed by user equipment (UE), comprising: receiving radio resource control (RRC) signaling, the RRC signaling comprising configuration information used for configuring, for the UE, a data radio bearer (DRB) supporting packet duplication; establishing a corresponding DRB according to the configuration information; and calculating transmittable data of a packet data convergence protocol (PDCP) entity for a logical channel corresponding to the established DRB. The present application also provides corresponding UE, a base station, and a corresponding method executed by a base station.

Abstract: The present disclosure provides user equipment (UE), a base station, and related methods. A method executed by UE, the method comprises: sending to a master base station UE capability information related to bearer types supported by the UE, wherein the bearer types comprise New Radio (NR), Long Term Evolution (LTE), and/or enhanced Long Term Evolution (eLTE); and receiving, from the master base station, configurations of the bearer types.

Abstract: Provided is a method executed by user equipment, comprising: receiving a radio resource control (RRC) connection reconfiguration message; determining whether the received RRCConnectionReconfiguration message contains indication information, the indication information indicating user equipment (UE) to reconfigure a first type of data radio bearer (DRB) into a second type of DRB that is different from the first type of DRB; and in a case where the received RRCConnectionReconfiguration message contains the indication information, reconfiguring the UE according to the RRCConnectionReconfiguration message, wherein the first type of DRB comprises a main cell group (MCG) DRB or a wireless local area network (WLAN) split DRB, and the second type of DRB comprises an MCG DRB, a WLN split DRB or a WLN non-split DRB. Corresponding user equipment is also provided.

Abstract: Provided is a method for user equipment (UE), the method comprising: creating a first common control channel (CCCH) and a second common control channel (CCCH) with different priorities for respectively transmitting a dedicated radio resource control (RRC) message and a system information request message, wherein the system information request message is used for requesting system information other than minimum system information; according to the priorities of the first CCCH and the second CCCH, determining to use which CCCH of the first CCCH and the second CCCH and including CCCH service data unit (SDU) corresponding to same in a random access message 3 ‘Msg3’ or to include both CCCH SDUs of the first CCCH and the second CCCH in the random access message 3 ‘Msg3’; and sending the random access message 3 ‘Msg3’ to a base station.

Abstract: The present application provides a method executed by a user equipment, comprising: receiving a first system information (SI) message, wherein the first system information (SI) message comprises type information related to a system information block (SIB) and scheduling information of a second system information (SI) message to which the type of the SIB belongs, and the scheduling information comprises a time when the second SI message appears and indication information indicating whether the second SI message is broadcast; and if the indication information indicates that the second SI message is not broadcast, sending an SI request message, and receiving a needed system information block (SIB) according to the scheduling information in the received first SI message. The present application further provides a corresponding user equipment and base station. By means of the present invention, unnecessary overheads are avoided and system resources are saved while meeting the demand of a UE acquiring information.

Abstract: The present disclosure provides a method for reporting multi-connection transmission capability, a method for configuring multi-connection transmission modes, a method for preventing retransmission of data, and corresponding user equipment and a base station which support multi-connection transmission. The method for reporting a multi-connection transmission capability comprises: receiving, from a base station, a UE capability query message, the UE capability query message being used to request the UE to send a wireless access capability of the UE for accessing an access network; generating a UE capability information message in response to the received UE capability query message, the UE capability information message being used to indicate the wireless access capability of the UE for accessing the access network and comprising bearer types and/or transmission manners supported by the UE; and sending to the base station the UE capability information message.

Abstract: The present disclosure provides an access control method performed at user equipment (UE), comprising: receiving, from a base station, multiple pieces of access control information corresponding to multiple network types; using the received multiple pieces of access control information to respectively perform an access control check for the multiple network types of networks; starting an access barring timer according to an access control check result; and if the access barring timer times out, informing an upper layer of the UE that barring of access is removed. The present disclosure also provides an access control configuration method for UE performed at a base station, corresponding UE, and a corresponding base station.

Abstract: Provided in the present invention is a method, base station, and user equipment for configuring a serving cell group. The method includes: a base station transmitting serving cell group configuration information to a user equipment having carrier aggregation capability, where the serving cell group configuration information indicates a reference cell used for transmitting uplink control information of a serving cell. The present invention allows the base station to flexibly configure multiple PUCCH reference cells and to configure different PUCCH reference cells on the basis of different cell loads.

Abstract: Provided is a method executed by user equipment, comprising: receiving a radio resource control (RRC) connection reconfiguration message; determining whether the received RRCConnectionReconfiguration message contains indication information, the indication information indicating user equipment (UE) to reconfigure a first type of data radio bearer (DRB) into a second type of DRB that is different from the first type of DRB; and in a case where the received RRCConnectionReconfiguration message contains the indication information, reconfiguring the UE according to the RRCConnectionReconfiguration message, wherein the first type of DRB comprises a main cell group (MCG) DRB or a wireless local area network (WLAN) split DRB, and the second type of DRB comprises an MCG DRB, a WLN split DRB or a WLN non-split DRB. Corresponding user equipment is also provided.

Abstract: Provided is a base station, comprising: a configuration unit, configured to configure a transmission waveform of a User Equipment (UE) for uplink transmission; and a transmission unit, configured to transmit information related to the configuration to the UE. The configuration unit is configured by using any of the following modes: physical layer signaling, a Random Access Response (RAR) message of Media Access Control (MAC), and Radio Resource Control (RRC) signaling. The present application also provides a user equipment (UE) and a corresponding method.

Abstract: The present disclosure provides a method for obtaining supplementary system information, and a corresponding user equipment (UE), and base station. A method used in the UE according to the present invention comprises: sending a system information request message to a base station to request required supplementary system information, and starting a timer simultaneously; and receiving the requested supplementary system information within a time window defined by the timer.

Abstract: The present invention provides a method for random access executed at user equipment (UE), comprising: receiving configuration information from a base station, the configuration information indicating an anchor carrier and/or one or a plurality of non-anchor carriers supporting a random access; selecting a carrier from the anchor carrier and/or the one or plurality of non-anchor carriers supporting a random access as a random access carrier according to the configuration information; and performing a random access by using the random access carrier. The present invention further provides a method for a random access executed at a base station, corresponding UE, and a corresponding base station.

Abstract: The present disclosure provides a method in a secondary Base Station (BS) for reporting a downlink data transmission state to a master BS. The method comprises: transmitting, by the secondary BS, one or more Packet Data Convergence Protocol (PDCP) Protocol Data Units (PDUs) from the master BS to a User Equipment (UE); and transmitting, by the secondary BS, to the master BS a downlink data transmission state message including a sequence number of at least one PDCP PDU that has been transmitted successfully. The present disclosure also provides a method in a master BS for discarding PDCP PDUs as early as possible. The method comprises: receiving, by the master BS, from a secondary BS a downlink data transmission state message; and discarding, by the master BS, one or more PDCP PDUs stored in the master BS based on the downlink data transmission state message. The associated master BS and secondary BS are also provided.