SIGNAL SENDING METHOD, SIGNAL DETECTION METHOD AND RELEVANT DEVICE AND SYSTEM

摘要

Provided are a signal sending method, a signal detection method and a relevant device and a system. The signal sending method comprises: when a base station determines that a first cell enters or prepares to enter a sleep state, a first signal is sent to a user equipment in the first cell, wherein the first signal carries time information about the first cell entering the sleep state so as to enable the user equipment to determine that the first cell enters the sleep state according to the time information; when the base station determines that the first cell enters an activation state from the sleep state, a second signal is sent to the user equipment in the first cell so as to enable the user equipment to determine that the first cell enters the activation state according to the second signal. The technical solution provided in the present invention can enable a UE to discover a state variation of a cell in time.