Random access method, radio communication terminal device, receiving method, and base station apparatus

摘要

Random access technology is provided for establishing an individual channel between a radio communication terminal device and a base station device in a short time and a radio communication terminal device executing the random access method. A RACH sub-channel allocation unit allocates a transmission packet input from a replication unit to an arbitrary sub-carrier at the RACH arbitrary time slot at random. An allocation unit judges whether an overlap is generated in the allocation result obtained by the RACH sub-channel allocation unit.

主权项

1. A terminal apparatus comprising:
a receiver configured to receive information transmitted from a base station apparatus; signal generating circuitry configured to generate, based on received information from the base station, a random access signal requesting service from the base station apparatus and including a random access sequence of bits repeated twice successively in a time domain, and a transmitter configured to transmit the random access signal, from the terminal apparatus to the base station apparatus over a random access channel, without waiting for a response from the base station apparatus to confirm whether either of the random access sequences of bits has been received at the base station apparatus, wherein the transmitted random access signal includes the random access sequence of bits in one time slot and the repeated random access sequence of bits in a second, different time slot.