Method for an improved cell selection/reselection by a user equipment trying to camp on a radio cell of a public land mobile network

摘要

The invention relates to a method for an improved cell selection/ reselection handling by a user equipment that is trying to camp on a radio cell of a public land mobile network, wherein the public land mobile network comprises at least a first radio cell with a first base station entity and a second radio cell with a second base station entity, the improved cell selection/reselection handling being related to an uplink access procedure in dependency of attempts, by the user equipment, to get connected with the public land mobile network using a random access channel of the first base station entity and/or of the second base station entity, wherein the method comprises the following steps: • —in a first step, the cell selection/reselection procedure is performed by the user equipment, leading to the result that both the first radio cell and the second radio cell fulfill a cell selection criterion, wherein the first radio cell is prioritized with regard to the second radio cell, · —in a second step, the user equipment tries to get connected with the publie land mobile network using the random access channel of the first base station entity which fails, ·- in a third step, a modified cell selection/reselection procedure is performed by the user equipment, wherein - despite unchanged radio conditions regarding the first base station entity, the second base station entity, and the user equipment - the user equipment tries to get connected with the public land mobile network using a random access channel of the second base station entity.