Method of transmitting data in a mobile communication system
AssigneeEvolved Wireless LLC
InventorsYeong Hyeon Kwon, Seung Hee Han, Hyun Hwa Park, Dong Cheol Kim, Hyun Woo Lee, Min Seok Noh
Life of this patent
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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.
Claims12
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.
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
- 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.
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
- 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.
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.
Dependencies are inferred from the claim text.