Method of transmitting data in a mobile communication system
DCFirst Claim
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1. A method for transmitting a preamble sequence from user equipment to a base station to at least improve detection performance, the method comprising:
- receiving, from the base station, position information of an allocated random access channel resource, the position information including frequency and timing information;
generating, by the user equipment, a specific sequence, having a length (L), from a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) sequence;
applying, by the user equipment, a circular shift to the specific sequence by multiplying the specific sequence by an exponential sequence;
repeating, by the user equipment, the circular-shifted specific sequence to generate a consecutive sequence having a length (N*L), wherein N is an integer greater than 1;
generating, by the user equipment, the preamble sequence by concatenating a single cyclic prefix (CP) to a front end of the consecutive sequence; and
transmitting, by the user equipment, on a random access channel the preamble sequence to the base station to access a cellular network.
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Abstract
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.
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Citations
12 Claims
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1. A method for transmitting a preamble sequence from user equipment to a base station to at least improve detection performance, the method comprising:
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receiving, from the base station, position information of an allocated random access channel resource, the position information including frequency and timing information; generating, by the user equipment, a specific sequence, having a length (L), from a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) sequence; applying, by the user equipment, a circular shift to the specific sequence by multiplying the specific sequence by an exponential sequence; repeating, by the user equipment, the circular-shifted specific sequence to generate a consecutive sequence having a length (N*L), wherein N is an integer greater than 1; generating, by the user equipment, the preamble sequence by concatenating a single cyclic prefix (CP) to a front end of the consecutive sequence; and transmitting, by the user equipment, on a random access channel the preamble sequence to the base station to access a cellular network. - View Dependent Claims (2, 3, 4)
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5. A system that transmits a preamble sequence to a base station to at least improve detection performance, the system comprising:
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user equipment adapted to; receive, from the base station, position information of an allocated random access channel resource, the position information including frequency and timing information; generate, by the user equipment, a specific sequence, having a length (L), from a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) sequence; apply, by the user equipment, a circular shift to the specific sequence by multiplying the specific sequence by an exponential sequence; repeat, by the user equipment, the circular-shifted specific sequence to generate a consecutive sequence having a length (N*L), wherein N is an integer greater than 1; generate, by the user equipment, the preamble sequence by concatenating a single cyclic prefix (CP) to a front end of the consecutive sequence; and a transmitter in the user equipment adapted to transmit on a random access channel the preamble sequence to the base station to access a cellular network. - View Dependent Claims (6, 7, 8)
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9. A method for transmitting a preamble sequence from user equipment to a base station to at least improve detection performance, the method comprising:
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receiving from the base station position information of an allocated random access channel resource, the position information including frequency and timing information; generating, by the user equipment, a specific sequence, having a length (L), from a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) sequence; applying, by the user equipment, a circular shift to the specific sequence by multiplying the specific sequence by an exponential sequence; repeating, by the user equipment, the circular-shifted specific sequence to generate a consecutive sequence having a length (N*L), wherein N is an integer greater than 1; generating, by the user equipment, the preamble sequence by concatenating a single cyclic prefix (CP) to a front end of the consecutive sequence; and attempting, by the user equipment, access over the random access channel resource in a current frame, and, when the attempt is successful, transmitting, by the user equipment the preamble sequence to the base station to access a cellular network. - View Dependent Claims (10)
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11. A system that transmits a preamble sequence to a base station to at least improve detection performance, the system comprising:
user equipment adapted to; receive from the base station position information of an allocated random access channel resource, the position information including frequency and timing information; generate, by the user equipment, a specific sequence, having a length (L), from a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) sequence; apply, by the user equipment, a circular shift to the specific sequence by multiplying the specific sequence by an exponential sequence; repeat, by the user equipment, the circular-shifted specific sequence to generate a consecutive sequence having a length (N*L), wherein N is an integer greater than 1; generate, by the user equipment, the preamble sequence by concatenating a single cyclic prefix (CP) to a front end of the consecutive sequence; and attempt, by the user equipment, access over the random access channel resource in a current frame, and, when the attempt is successful, transmitting, by the user equipment the preamble sequence to the base station to access a cellular network. - View Dependent Claims (12)
Specification