| 摘要 |
Provided is a method for determining a proper preamble allocation mode. The method is applicable to a base station communicating with a human UE and a machine UE. The base station collects information from different types of UEs to figure out arrival rates for human to human type random access (H2H RA) attempts and machine to machine type random access (M2M RA) attempts. The base station selects one allocation mode out of two different allocation modes. In one mode, RA preambles are dedicatedly allocated to M2M UEs. In the other mode, preambles are commonly allocated to different types of UEs. The base station indicates the selected allocation mode by using a system information block type two (SIB2). [Reference numerals] (S610) UE information request (RACH-ReportReq=true); (S620) UE information response (numberOfPreamblesSent, T(i); contentionDected = true or not); (S630) Collect information from multiple UE; (S640) Perform an estimation of an arrival rate; (S650) Determine a preamble allocation mode and the boundary between Zone 1 and Zone 2 |
