RADIO COMMUNICATION TERMINAL DEVICES AND METHODS FOR RANDOM ACCESS
A terminal apparatus includes processing circuitry to duplicate a transmission packet to generate duplicated transmission packets and to assign the duplicated transmission packets to a subcarrier resource for a random access channel. A transmitter in the terminal transmits the duplicated transmission packets using the subcarrier resource for the random access channel.
1 . A radio communication terminal apparatus comprising:
processing circuitry configured to duplicate a transmission packet to generate duplicated transmission packets and to assign the duplicated transmission packets to a subcarrier resource for a random access channel; and
a transmitter configured to transmit the duplicated transmission packets using the subcarrier resource for the random access channel.
2 . The radio communication terminal apparatus according to claim 1 , wherein the processing circuitry is configured to assign the duplicated transmission packets to at least one of a plurality of antennas for transmission over the subcarrier resource in the random access channel.
3 . The radio communication terminal apparatus according to claim 1 , wherein the duplicated transmission packets include two or more duplicated transmission packets.
4 . The radio communication terminal apparatus according to claim 1 , wherein the processing circuitry is configured to assign at least two of the duplicated transmission packets to two consecutive time slots in the random access channel.
5 . The radio communication terminal apparatus according to claim 1 , wherein the subcarrier resource includes one or both of a timing or a spreading code in addition to a transmission frequency.
6 . The radio communication terminal apparatus according to claim 1 , wherein the processing circuitry is configured to assign the duplicated transmission packets on at least two resources which are on the same subcarrier for the random access channel.
7 . The radio communication terminal apparatus according to claim 1 , wherein the transmitter is configured to transmit the duplicated transmission packets using the subcarrier resource for the random access channel without waiting for a response from a base station to confirm whether transmission packets transmitted on the random access channel are received at the base station.
8 . A random access method comprising:
duplicating a transmission packet to generate duplicated transmission packets;
assigning the duplicated transmission packets to a subcarrier resource in a random access channel; and
transmitting the duplicated transmission packets using the subcarrier resource for the random access channel.
9 . The random access method according to claim 8 , wherein the assigning includes assigning the duplicated transmission packets to at least one of a plurality of antennas for transmission over the subcarrier resource for the random access channel.
10 . The random access method according to claim 8 , wherein the duplicated transmission packets include two or more duplicated transmission packets.
11 . The random access method according to claim 8 , wherein the assigning includes assigning at least two of the duplicated transmission packets to two consecutive time slots for the random access channel.
12 . The random access method according to claim 8 , wherein the subcarrier resource includes one or both of a timing or a spreading code in addition to a transmission frequency.
13 . The random access method according to claim 8 , wherein the assigning includes assigning the duplicated transmission packets on at least two resources which are on the same subcarrier for the random access channel.
14 . The random access method according to claim 8 , wherein the transmitting includes transmitting the duplicated transmission packets using the subcarrier resource for the random access channel without waiting for a response from a base station to confirm whether transmission packets transmitted on the random access channel are received at the base station.