4.7A E-RUCCH transmission procedure

25.2243GPPPhysical layer procedures (TDD)TS

Requests for the transmission of an E-RUCCH are controlled by higher layers [18].

The E-RUCCH random access procedure shall be performed as follows:

1 Randomly select one channelization code from the set of available codes for E-RUCCH. The random function shall be such that each code is chosen with equal probability.

2 Determine the midamble shift to use, based on the selected channelization code.

3 Set the E-RUCCH message transmission power level according to subclause 4.2.2.5.

4 Transmit the E-RUCCH with no timing advance using the selected channelization code.