A device, wherein the device is a second device, and the second device comprises: a receiver, configured to receive predetermined moment information, wherein the predetermined moment information is sent by a first device or a network device, and the predetermined moment information comprises a predetermined moment determined according to a discontinuous reception, DRX, cycle of the first device; and a processor, configured to communicate with the first device at the predetermined moment comprised in the predetermined moment information received by the receiver, wherein the first device is a user equipment arranged to access the network side device directly, and the second device is a device that is adapted to be paired with the first device and to access the network side device by using the first device as a relay, wherein the processor is specifically configured to: send an access signal to the first device at the predetermined moment; and communicate with the first device according to an access cycle and at the predetermined moment in the access cycle, wherein the access cycle is N times the DRX cycle, the predetermined moment is an M th subframe, the M th subframe is an M th subframe before or after a paging subframe in a first DRX cycle, N > 1, M≥1, N and M are integers, and the first DRX cycle is the 1 st DRX cycle of the N DRX cycles comprised in the access cycle. a receiver, configured to receive predetermined moment information, wherein the predetermined moment information is sent by a first device or a network device, and the predetermined moment information comprises a predetermined moment determined according to a discontinuous reception, DRX, cycle of the first device; and a processor, configured to communicate with the first device at the predetermined moment comprised in the predetermined moment information received by the receiver, wherein the first device is a user equipment arranged to access the network side device directly, and the second device is a device that is adapted to be paired with the first device and to access the network side device by using the first device as a relay, wherein the processor is specifically configured to: send an access signal to the first device at the predetermined moment; and communicate with the first device according to an access cycle and at the predetermined moment in the access cycle, wherein the access cycle is N times the DRX cycle, the predetermined moment is an M th subframe, the M th subframe is an M th subframe before or after a paging subframe in a first DRX cycle, N > 1, M≥1, N and M are integers, and the first DRX cycle is the 1 st DRX cycle of the N DRX cycles comprised in the access cycle. send an access signal to the first device at the predetermined moment; and communicate with the first device according to an access cycle and at the predetermined moment in the access cycle, wherein the access cycle is N times the DRX cycle, the predetermined moment is an M th subframe, the M th subframe is an M th subframe before or after a paging subframe in a first DRX cycle, N > 1, M≥1, N and M are integers, and the first DRX cycle is the 1 st DRX cycle of the N DRX cycles comprised in the access cycle.