Telefonaktiebolaget LM Ericsson (publ)
Random Access Preamble Slot Allocation

Abstract:

An example method for transmitting a random access preamble comprises selecting (502) a random access preamble configuration from a plurality of predetermined random access preamble configurations. The method further includes determining (504) a time interval in which to transmit the random access preamble. The method further comprises transmitting (506) the random access preamble according to the selected random access preamble configuration. Each of the plurality of random access preamble configurations comprises a combination of (a) a single root sequence from a predetermined set of one or more root sequences, (b) a single cyclic shift of a predetermined plurality of cyclic shifts for the root sequence, and (c) a single starting position of two or more predetermined starting positions within time intervals allocated for random access preamble transmission.