Method and terminal for selecting random access resource

A terminal for selecting a random access resource, the terminal comprising:

• a memory storing instructions for a receiving module, a subframe selecting module and a resource selecting module, wherein
• a processor executing the stored instructions for the receiving module receives a physical downlink control channel signaling sent by a system;
• said processor executing the stored instructions for the subframe selecting module determines from among a plurality of subframes following a subframe in which the physical downlink control channel signaling is received, a first subframe which meets condition A and contains a random access resource, wherein condition A is that the time difference between the current subframe and the subframe in which the physical downlink control channel signaling is received is greater than or equal to k, and k is the time delay defined at a physical layer of the terminal;
• and
• said processor executing the stored instructions for the resource selecting modules selects, starting from the first subframe, one or more subframes each containing a respective random access source,
• wherein assuming the subframe in which the physical downlink control channel signaling is received has a subframe number m, and is located in a radio frame which has a frame number M, the first subframe has a subframe number n, and is located in a radio frame which has a frame number N, the first subframe further meets the following equation:
• N=(M+└(m+k)/10┘)%1024, n=(m+k)%10.