Abstract: Example reference signal sending methods and apparatus are described. In one example method, a terminal device detects whether a paging scheduling message exists in a PDCCH search space whose starting subframe is a subframe corresponding to a paging occasion (PO), and/or detects whether a wake-up signal (WUS) exists before a PO. A network device determines a time domain resource in first duration based on a quantity of paging occasions in a discontinuous reception period, where the time domain resource is a time domain resource in a time-frequency resource used to transmit a reference signal. The network device sends the reference signal to a terminal device on the time domain resource.

Abstract: The present disclosure relates to methods and terminal devices for detecting a wake-up signal. A terminal device sends first information to a network device, where the first information indicates a reported gap, receives second information sent by the network device, and determines a configuration condition of a first gap and a configuration condition of a second gap based on the second information. The terminal device determines a target gap based on the reported gap, the configuration condition of the first gap, and the configuration condition of the second gap, and detects a wake-up signal at a detection position before a start position of the first paging opportunity in a paging time window, where the detection position is determined based on the target gap and maximum duration of the wake-up signal.

Abstract: A communication method and device, the method including obtaining, by a terminal device, a timing advance (TA), determining, by the terminal device according to a preset rule and first information, whether the TA is valid, where the first information includes a first parameter, and wherein the first parameter is information related to a location of the terminal device, and performing at least one of determining, by the terminal device, in response to the TA being invalid, that uplink data transmission cannot be performed, or determining, by the terminal device, in response to the TA being valid, that the TA can be used for uplink data transmission.

Abstract: This application provides a method for waking up a terminal, a terminal, and a network device. In technical solutions provided in this application, a network device determines, from a plurality of wake-up signals that can wake up a to-be-woken-up terminal and that need to be monitored by the to-be-woken-up terminal for one PO, a target wake-up signal of the to-be-woken-up terminal, and sends the target wake-up signal to the to-be-woken-up terminal. If the terminal detects, for the one PO, at least one wake-up signal of the plurality of wake-up signals that can wake up the terminal and that need to be monitored by the terminal, the terminal monitors a downlink control channel at the PO.

Abstract: A signal sending method, a signal receiving method, and an apparatus are provided. The method includes: A network device generates a first sequence, where the network device maps the first sequence to the last 11 orthogonal frequency division multiplexing OFDM symbols in a first subframe, and maps, to the first M OFDM symbols in the first subframe sequentially, a sequence that belongs to the first sequence and that is to be mapped to a first OFDM symbol to an Mth OFDM symbol, where the first OFDM symbol to the Mth OFDM symbol are M OFDM symbols of the last N OFDM symbols in the first subframe, N is greater than or equal to M, N is an integer greater than 0 and less than 12, and M is an integer greater than 0 and less than 4; and the network device sends the first subframe.

Abstract: A plug connector includes a lower terminal module, an upper terminal module and an insulating housing. The lower terminal module includes a lower insulator and a plurality of lower terminals integratedly molded in the lower insulator, each of the lower terminals has a lower contact portion beyond a bottom face of the lower insulator. The upper terminal module is engaged with the lower terminal module, includes an upper insulator and a plurality of upper terminals integratedly molded in the upper insulator, each of the upper terminals has an upper contact portion beyond a top face of the upper insulator. The insulating housing is integratedly molded outside the lower terminal module and the upper terminal module, each lower contact portion is exposed from a bottom face of the insulating housing, each upper contact portion is exposed from a top face of the insulating housing.