Sharp Kabushiki Kaisha Corporation

Fg Innovation Company Limited

Chongming Zhang

Renmao Liu

Shohei Yamada

Ningjuan Chang

Chao Luo

Fancying Xiao

Hidekazu Tsuboi

Fangying Xiao

Provided in the present invention are a method performed by user equipment, and user equipment. A method performed by user equipment is a method of an RRC connection re-establishment procedure performed by user equipment (UE), and includes the following steps: triggering or initiating, by the UE, an RRC connection re-establishment procedure; during initiation of the RRC connection re-establishment procedure, starting, by the UE, a timer T, and performing cell selection or relay selection; and in the case that the UE has selected a suitable cell or the UE has selected a suitable relay, stopping, by the UE, T, wherein the suitable cell is a cell of which a measured value or a level value meets a cell selection rule, and the suitable relay is a relay of which a measured value or a level value meets a relay selection rule.

Method performed by user equipment, and user equipment

A method performed by a user equipment (UE) is provided. The method detects a failure in a master cell group (MCG) transmission. The method, after determining that the UE is configured with a resume timer, transmits a message to a base station (BS). The message includes information related to the failure. The method also starts the resume timer upon sending the message to the BS, and triggers a radio resource control (RRC) connection re-establishment procedure when the resume timer expires.

Control method of user equipment and user equipment

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.

Method for sending and receiving system message, base station, and user equipment

The invention provides a method performed by user equipment and user equipment. The user equipment is configured in a discontinuous reception (DRX) mode. The method performed by user equipment comprising: initiating a random access (RA) procedure if a value of a beam failure instance (BFI) counter is greater than or equal to a threshold, the threshold being configured by an information element (IE) beamFailureInstanceMaxCount; transmitting a RA preamble; starting a RA response window, the RA response window being configured in an IE BeamFailureRecoveryConfig; and monitoring a PDCCH on a search space indicated by an IE RecoverySearchSpaceId while the RA response window is running. The user equipment can reliably complete a procedure to recover from beam failure even if the user equipment is configured in a DRX mode, thereby improving the overall reliability and communication efficiency of a communication system related to the user equipment.

Method and apparatus of beam failure recovery executed by user equipment

The present disclosure provides a control method for a user equipment, a control method for a base station, and a user equipment. The control method for a user equipment comprises receiving scheduling request configuration information related to a sidelink; and performing a scheduling related to the sidelink based on the received scheduling request configuration information, wherein the scheduling request configuration information is received from at least a network side or a base station side and comprises a scheduling request configuration identity (ID) or specific scheduling request configuration.

Control method for user equipment, control method for base station, and user equipment

Provided in the present invention are a method performed by user equipment, and user equipment, which can reliably perform processing related to a beam failure recovery request/beam failure report (BFR) and/or scheduling request (SR). The method comprises: detecting a measurement result of a measurement reference signal corresponding to a serving cell; if the measurement result indicates that a beam failure has occurred, utilizing a counter to count the number of beam failures; and when the count value of the counter is above a given threshold, performing processing related to a beam failure recovery request/beam failure report (BFR) and/or scheduling request (SR).

The present invention provides a random access method and user equipment. The random access method includes: user equipment (UE) transmitting a message A to a base station, wherein the message A includes a preamble and a payload of the message A; the user equipment (UE) receiving a message B transmitted by the base station and serving as a response message to the message A; determining whether the message B includes a contention resolution ID of the UE; and upon determining that the message B includes the contention resolution ID of the UE, generating a media access control layer control information (MAC CE), or a media access control layer protocol data unit (MAC PDU), or hybrid automatic repeat request acknowledgement (HARQ-ACK) information to indicate acknowledgement information related to the message B.

Random access method and user equipment

The present invention provides a method performed by user equipment and user equipment. The method comprises: receiving control information from a base station, the control information comprising a resource configuration related to a transmission on a Physical Sidelink Shared Channel (PSSCH); transmitting data to other UE through the PSSCH according to the control information; and transmitting to the base station first feedback information related to the transmission on the PSSCH and/or second feedback information related to a transmission on a Physical Downlink Shared Channel (PDSCH) between the base station and the UE. In this way, reliable data transmission can be achieved, thereby improving the reliability and stability of an entire communication system.

User equipment and method for transmitting HARQ feedback to another user equipment

Provided in the present invention are a control method for user equipment, and user equipment. The control method for user equipment (UE) comprises: receiving, by the UE, a channel state information (CSI) request transmitted by other UE; generating, by the UE, on the basis of the CSI request, a CSI report transmitted through a PSSCH, and sidelink control information (SCI) for scheduling and indicating the transmission of the PSSCH; and setting, on the basis of whether the PSSCH carries a MAC protocol data unit (MAC PDU), a quality of service (QoS) parameter related to the QoS of the PSSCH transmission included in the SCI.

Control method for user equipment, and user equipment

Provided are a method for radio link failure recovery and user equipment. The method for radio link failure recovery includes: determining whether a radio link failure (RLF) occurs on a radio link of user equipment (UE); when the RLF occurs on the UE, if the UE is configured with a conditional handover, then executing a cell selection procedure; and performing a radio link failure recovery operation according to a cell selection result of the cell selection procedure.

Method for radio link failure recovery and user equipment

The present invention provides an access control method in user equipment and user equipment that can efficiently and reliably establish a radio bearer for data transmission. The access control method comprises: determining a layer-2 destination ID according to information acquired from an upper layer; and establishing a radio bearer (RB) associated with the determined layer-2 destination ID.

Access control method and user equipment

A handover control method of a source base station (BS). The method includes: transmitting a conditional handover request to a target BS; when a handover request confirmation message is received from the target BS, transmitting a conditional handover message to a user equipment (UE); and receiving a conditional handover complete message from the target BS in response to a Radio Source Control (RRC) connection reconfiguration complete message being sent from the UE to the target BS.

Handover control method and communications device

Provided by the present disclosure are an access control method in a user equipment and the user equipment, which may flexibly control the activation and deactivation of PDCP duplication and the activation and deactivation of a serving cell restriction. The access control method comprises: receiving configuration information related to a data radio bearer (DRB); receiving a media access control element (MAC CE) indicating the activation/deactivation of a packet data convergence protocol layer (PDCP) duplication function of the DRB; when the MAC CE indicates the deactivation of the PDCP duplication function, determining whether the configuration information comprises indication information, the indication information indicating a restriction relationship between a logical channel associated with the DRB and a serving cell which is allowed to be used; and determining a serving cell used for the logical channel according to the result of the determination.

A method for providing System Information (SI), the method including transmitting information about first associations between a plurality of preamble sequences and a plurality of pieces of SI, and about second associations between the pieces of SI and a plurality of system information blocks (SIBs); receiving a preamble from a user equipment (UE), the preamble including one of the preamble sequences; identifying one of the SIBs based on the one of the preamble sequences, the first associations, and the second associations, the one of the SIBs including one of the pieces of SI associated with the one of the preamble sequences; and transmitting the one of the SIBs to the UE.

System information requesting method, corresponding user equipment, and computer-readable medium

A control method for User Equipment (UE) comprising: performing communication with a master cell group (MCG) and a secondary cell group (SCG); detecting whether a failure occurred in the MCG transmission; if it is detected that the failure has occurred in the MCG transmission, executing an MCG failure processing operation; and sending a message to a base station, the message indicating information related to the failure.

Growing community of inventors

Shanghai, China

Chongming Zhang