| 摘要 |
Embodiments of the present invention disclose a random access method. In a scenario of an ultra-large coverage cell, the method includes: receiving a random access preamble RA preamble sent by user equipment UE; setting a timing advance T A and an R-bit identifier that are of the ultra-large coverage cell, where the R-bit identifier is used to indicate a time granularity of the timing advance T A or is used to indicate a value range of the timing advance T A ; and sending a random access response RA response message to the UE, where the RA response message includes the timing advance T A and the R-bit identifier, and the ultra-large coverage cell is a cell with a coverage distance greater than 107 Km. Therefore, uplink time and downlink time are aligned when uplink signals sent by UEs in different positions in a cell arrive at a base station, thereby ensuring quality of communication between the UE and the base station. |
