Patent attributes
A wireless device receives first parameters and second parameters. The first parameters indicate a first random access channel of a first type random access. The second parameters indicate a second random access channel and an uplink resource of a second type random access. A first preamble is transmitted via the first random access channel. A response is received. The response indicates an index of the first preamble. The response indicates a timing advance value and an uplink grant for a contention resolution. Based on a determination that the contention resolution is unsuccessfully completed, a second preamble is transmitted via the second random access channel and a transport block is transmitted via the uplink resource, based on the timing advance value.
