Method of transmitting data in a mobile communication system
Disclosed is a data transmission method in a mobile communication system. The data transmission method through a code sequence in a mobile communication system includes grouping input data streams into a plurality of blocks consisting of at least one bit so as to map each block to a corresponding signature sequence, multiplying a signature sequence stream, to which the plurality of blocks are mapped, by a specific code sequence, and transmitting the signature sequence stream multiplied by the specific code sequence to a receiver.
1. A method of transmitting a preamble sequence via a random access channel (RACH) in a mobile communication system, the method comprising:
generating said preamble sequence in a time domain according to resources permitted for the RACH; and
transmitting the preamble sequence via the resources to a receiving side,
wherein the resources are given regardless of a time domain unit of an OFDM (Orthogonal Frequency Divisional Multiplexing) symbol duration within a subframe.
2. The method of claim 1 , wherein generating said preamble sequence comprises:
generating a specific sequence from a Constant Amplitude Zero Auto Correlation (CAZAC) sequence;
repeating said specific sequence at least one time; and
concatenating a cyclic prefix (CP) to a front end of the repeated sequence, said cyclic prefix being identical to a part of a rear end of the specific sequence.
3. The method of claim 2 , further comprising applying a cyclic shift to said specific sequence.
4. The method of claim 3 , wherein a value of said applied cyclic shift is determined as an integer multiple of a predetermined circular shift unit.
5. The method of claim 3 , wherein a value of said applied cyclic shift is used as additional information.
6. The method of claim 3 , wherein applying said cyclic shift comprises multiplying said specific sequence by an exponential sequence.
7. A transmitter adapted to transmit a preamble sequence via a random access channel (RACH) in a mobile communication system, the transmitter comprising:
a preamble generation unit configured to generate said preamble sequence in a time domain according to resources permitted for the RACH;
a transmission unit configured to transmit the preamble sequence via the resources to a receiving side,
wherein the resources are given regardless of a time domain unit of an OFDM (Orthogonal Frequency Divisional Multiplexing) symbol duration within a subframe.
8. The transmitter of claim 7 , wherein said preamble generation unit is further configured to generate a specific sequence from a Constant Amplitude Zero Auto Correlation (CAZAC)sequence, to repeat said specific sequence at least one time, and to concatenate a cyclic prefix (CP) to a front end of the repeated sequence, said cyclic prefix being identical to a part of a rear end of the specific sequence.
9. The transmitter of claim 8 , wherein said preamble generation unit is further configured to apply a cyclic shift to said specific sequence.
10. The transmitter of claim 9 , wherein a value of said applied cyclic shift is determined as an integer multiple of a predetermined circular shift unit.
11. The transmitter of claim 9 , wherein a value of said applied cyclic shift is used as additional information.
12. The transmitter of claim 9 , wherein said preamble generation unit is further configured to apply said cyclic shift by multiplying said specific sequence by an exponential sequence.