Abstract: Embodiments of the present invention provide a hybrid automatic repeat request method and a terminal device. The method includes: obtaining a first uplink grant (UL grant) sent by a base station, where the first uplink grant is carried in a media access control MAC message; transmitting uplink data based on the first uplink grant, and starting a first timer; starting a second timer after the first timer expires; and listening to a physical downlink control channel PDCCH based on the second timer. According to the hybrid automatic repeat request method and the terminal device in the embodiments of the present invention, electricity can be saved, and a retransmission delay can be reduced.

Abstract: Embodiments of the present invention provide a communication method used for random access, including: receiving, by a terminal, random access preamble information sent by a base station; and before sending random access to the base station based on the random access preamble information, receiving, by the terminal, a random access response sent by the base station, where the random access response includes an uplink asynchronous hybrid automatic repeat request HARQ process identifier, and the uplink asynchronous HARQ process identifier is used by the terminal to send uplink data to the base station. Compared with the prior art, the communication method provided in the embodiments of the present invention can ensure to some extent that uplink data is transmitted timely and can effectively improve uplink data transmission reliability.

Abstract: A counting method and an apparatus are provided, and are applied to a carrier aggregation scenario of a first cell and a second cell. The method is: obtaining, by a terminal, a subframe K1 of the first cell and a subframe K2 of the second cell; determining, by the terminal, a PDCCH subframe from the subframe K2, and determining a monitoring subframe from the subframe K1 and the subframe K2; and controlling, by the terminal based on the PDCCH subframe, a DRX timer to perform counting, and monitoring a PDCCH based on the monitoring subframe to learn of arrival of downlink data and/or uplink grant, where the first cell is a cell on which idle channel detection needs to be performed, and the second cell is a cell on which no idle channel detection needs to be performed.

Abstract: The present disclosure provides an uplink data transmission method at a terminal device, which includes: receiving in a subframe m, first resource allocation indication information from a network device; starting to listen on a channel of the LAA cell before the subframe m+n; if detecting, after a start moment of the first time unit and before a start moment of a tth time unit, that the channel is in an idle state, sending uplink data in tth to sth time units, where t is greater than 1 and less than or equal to s; and if detecting, before the start moment of the first time unit, that the channel is in the idle state, sending uplink data in the s time units. Therefore, the uplink data can be efficiently sent, and spectrum utilization of the LAA cell can be improved.

Abstract: A method for blindly detecting a physical downlink control channel and an apparatus are provided. The method includes: obtaining, by user equipment UE, configuration information sent by a base station, where the configuration information indicates a first cell in which downlink control information DCI does not need to be blindly detected and a second cell in which the DCI needs to be blindly detected in serving cells corresponding to the UE; and receiving, by the user equipment, the DCI sent by the base station in the second cell, and performing uplink transmission in the first cell based on the received DCI. The solution provided in the present disclosure resolves a prior-art problem that a quantity of PDCCH blind detections in an LTE system increases, and consequently hardware capabilities of many UEs cannot meet a communication requirement.

Abstract: The present invention discloses an uplink transmission method, a base station, and a terminal device, to implement uplink multiuser scheduling and multiuser resource multiplexing, and save resources. The method in embodiments of the present invention includes: obtaining, by a base station, first configuration information and instruction information, where the first configuration information is channel contention configuration information before uplink data is sent, the instruction information is information that instructs a terminal device to send a channel occupancy indication signal, and the channel occupancy indication signal is used to indicate that a current channel belongs to a radio access technology user; and sending, by the base station, the first configuration information and the instruction information to the terminal device, so that the terminal device sends the channel occupancy indication signal based on the first configuration information and the instruction information.

Abstract: Embodiments of this application relate to the communications field, and provide an uplink control information transmission method and an apparatus, to effectively ensure that when user equipment has both a PUCCH resource and a PUSCH resource, UCI can be transmitted to a base station. The method includes: pre-configuring, by user equipment, first uplink control information UCI and second UCI, where the first UCI is carried on a PUSCH resource of a first cell for transmission, the second UCI is carried on a PUCCH resource for transmission, and the first cell is a cell on which CCA or LBT detection needs to be performed; and sending, by the user equipment, the first UCI or the second UCI to a base station. The method and the apparatus are used for UCI transmission.

Abstract: A transmission resource obtaining method and user equipment are provided. The transmission resource obtaining method includes: receiving first configuration information sent by an base station, and obtaining request resources based on the first configuration information, where the request resources include a scheduling request (SR) resource and a physical random access channel (PRACH) resource; determining a target request resource from the request resources based on time information of user equipment, where the target request resource includes the SR resource and/or the PRACH resource; and sending an uplink resource request to the base station by using the target request resource. The technical solutions in the embodiments of the present invention help improve uplink transmission resource obtaining efficiency.

Abstract: Embodiments of the present invention provide an SI transmission method, a base station, and user equipment. The method includes: sending a request to a base station, where the request is used to request at least one type of SI of a first-type cell, and the first-type cell is a cell on which channel detection needs to be performed before data is sent; and receiving the at least one type of SI of the first-type cell.

Abstract: The present application discloses a measurement result reporting method, a method for controlling a discontinuous reception (DRX) timer to count, an apparatus, and user equipment. The measurement result reporting method includes: receiving, by user equipment, a measurement configuration of an unlicensed spectrum cell sent by a base station, where the measurement configuration includes a trigger condition, an average signal strength, and a signal strength related time ratio; and sending, by the user equipment, a measurement result of the average signal strength and the signal strength related time ratio to the base station when at least one of the average signal strength or the signal strength related time ratio satisfies the trigger condition.