| 摘要 |
<p>Disclosed are a method, a system and a device for random access, belonging to the channel access field. The method comprises the following steps: a machine to machine (M2M) terminal receiving access parameters delivered by a network side device, the access parameters comprising offset related information; the M2M terminal acquiring an offset between an access window of the M2M terminal and that of a human to human (H2H) terminal according to the offset related information, the offset being a value within a range of [1/2, 3/4] of an access window duration of the H2H terminal; and the M2M terminal performing random access according to the offset. Alternatively, the network side device sets an offset between an access window of the M2M terminal and that of the H2H terminal, the offset being a value within a range of [1/2, 3/4] of an access window duration of the H2H terminal; and the network side device carries the offset in an access parameter and delivers the access parameter to the M2M terminal, so that the M2M terminal performs random access according to the offset. The present invention further comprises a network side device and an M2M terminal, and a system formed thereof. The present invention reduces the access collision probability of the H2H terminal and the M2M terminal on the same access window of the same carrier, and improves the terminal access performance.</p> |
