Abstract: Embodiments of this application disclose a transmission method and an apparatus thereof. The method includes the following operations: performing, by a terminal device, idle state sensing on one or more candidate transmission frequency domain resources, where the one or more candidate transmission frequency domain resources are configured for PUCCH information transmission; determining, by the terminal device based on a sensing result of the one or more candidate transmission frequency domain resources, a transmission frequency domain resource from the one or more candidate transmission frequency domain resources for PUCCH information transmission; and transmitting, by the terminal device, the PUCCH information by using the determined transmission frequency domain resource. By using the embodiments of this application, uplink transmission can be implemented by using an unlicensed frequency spectrum, and transmission efficiency can be improved.

Abstract: Embodiments of this application disclose a signal transmission method, a related device, and a system. The method may include: receiving first indication information sent by a network device, where the first indication information is used to indicate an uplink resource that is allocated by the network device to a terminal in a first bandwidth; the resource indicated by the first indication information includes an integer quantity of resource blocks evenly distributed in a part or all of the first bandwidth; performing uplink transmission in a detected idle second bandwidth; and sending second indication information to the network device, where the second indication information is used to indicate the second bandwidth. This solution can support flexible bandwidth transmission, and can better adapt to a multi-bandwidth scenario supported by a next-generation new radio technology.

Abstract: This application discloses a communication method. The method includes: comparing, by a second transmit end device, a second bandwidth carrying at least one second service transmission and a first bandwidth, wherein the first bandwidth is used by a first transmit end device within a first specified time period on an unlicensed frequency band to complete first service transmission, the at least one second service transmission started in a remaining time period of the first specified time period after the first service transmission is completed; performing channel listening on the second bandwidth based on a result of the comparison; and performing, by the second transmit end device, the second service transmission on the second bandwidth if the second bandwidth is found to be in an idle state. In addition, a corresponding transmit end device is disclosed. This application discloses a channel listening mechanism applicable to a flexible-bandwidth scenario.

Abstract: Embodiments of this application disclose a resource allocation method and a related device and system. The method may include: allocating a resource group including M first resource blocks to a terminal when allocating uplink resources, where an occupancy ratio of a frequency spacing formed by the M first resource blocks to a system bandwidth is greater than a preset threshold, and the resource group further includes N second resource blocks in any frequency domain positions, where M?2, N?1, and both M and N are positive integers; and sending resource indication information to the terminal, where the resource indication information includes information about the resource group. According to the embodiments of this application, scheduling of uplink resources can be more flexible for use of an unlicensed frequency band while the OCB requirement of ETSI is met.

Abstract: This application discloses a beam training method, a communication device, a chip system, and a storage medium. The method includes: performing, by a transmit device, clear channel assessment on sectors corresponding to an antenna of the transmit device; and sending, by the transmit device in a sector whose result of clear channel assessment is idle, a training signal to a receive device, where the training signal is used to perform beamforming training on the antenna. With this solution, beamforming training efficiency can be improved and resource utilization can be increased.

Abstract: The present application discloses an uplink LBT channel detection method, an uplink data sending method, and a device. The method includes: before transmitting a UL grant, determining, by a base station, based on a service priority in a BSR of user equipment scheduled in a self-contained subframe, a contention window required for performing LBT; and performing, by the base station, the LBT based on the contention window, and after detecting that a channel is idle, transmitting, in the self-contained subframe through the channel, a UL grant corresponding to the user equipment; or after detecting, by using the LBT, that a channel is idle, transmitting, by the base station in the self-contained subframe through the channel, a UL grant corresponding to the user equipment, where the UL grant carries information about the contention window, so that the user equipment performs the LBT based on the information about the contention window.