Patent ID: 8644129
Filing Date: 2014-02-04
Classification: H04L,H04W

Abstract:
1. A method comprising: a) receiving, by a wireless device, at least one radio resource control (RRC) message from a base station, said at least one RRC message: b) receiving, by said wireless device from said base station, a control command causing said wireless device to initiate a random access procedure; c) transmitting to said base station a second random access preamble on said second carrier; d) if no second random access response corresponding to said second random access preamble is received within a random access response window and if a second counter of said second random access preamble transmissions is below a second predefined value, repeating (c) and (d); and e) if said second counter reaches said second predefined value without receiving said second random access response, said wireless device: