Patent ID: 8625524

Claim:
A method for use in a wireless device, the method comprising: a) receiving at least one message causing configuration of: i) a plurality of cells grouped into a plurality of cell groups; and ii) transmissions of sounding reference signals (SRSs) on a first cell assigned to a first cell group in said plurality of cell groups; b) transmitting a first transmission of said SRSs in parallel with transmission of at least one of: i) a first random access preamble in a second cell group different from said first cell group; and ii) a first packet on a second cell different from said first cell; and c) dropping a second transmission of said SRSs in a symbol if at least one of the following conditions is satisfied: i) a second random access preamble is transmitted overlapping said symbol in said first cell group; and ii) a second packet is transmitted overlapping said symbol in said first cell; and iii) said wireless device has insufficient power to transmit said second transmission in parallel with other uplink transmissions in said plurality of cells.