Patent ID: 9480084
Filing Date: 2016-10-25
CPC Classification: H04W

Claim Text:
1. A method in a radio base station of assigning a preamble to a user equipment (UE) for enabling the UE to perform a random access, the radio base station being allocated a first set of non-dedicated random access preambles and a second set of dedicated random access preambles, the method comprising: determining a dedicated random access preamble, of the second set, available for assignment to the UE; and transmitting to the UE a message including a field with a binary value corresponding to an index associated with a predefined configuration that indicates for which one or more physical random access channel (PRACH) occurrences, out of the PRACH occurrences of a configured PRACH configuration, the dedicated random access preamble is valid to be used by the UE for random access.