Patent ID: 8437295

Claim:
A method for a radio base station for signaling uplink channel access information to a user equipment (UE) being in a low activity state, the method comprising: receiving a random access request on a physical random access channel (PRACH), the random access request comprising a preamble; and sending a response to the received random access request on an acquisition indicator channel (AICH), the response comprising information associated with detection of the preamble and, in an extension of the AICH, an indication of an action to be taken by the UE; wherein the indication is created by: inserting, in the AICH, a first sequence corresponding to the preamble; modulating the first sequence with a first value; inserting, in the extension of the AICH, a second sequence and a third sequence orthogonal to and associated with the first sequence; modulating the second sequence and the third sequence with a second value and third value, respectively; inserting, in the extension of the AICH, a fourth sequence associated with the second sequence and the third sequence; modulating the fourth sequence with a fourth value; and setting the first value, the second value, the third value, and the fourth value to indicate one of a plurality of preconfigured resource allocations to be used for accessing an enhanced dedicated channel (E-DCH) or for accessing a random access channel (RACH).