Method of transmitting data in a mobile communication system

  • US 9,705,624 B2
  • Filed: 01/12/2017
  • Issued: 07/11/2017
  • Est. Priority Date: 06/09/2006
  • Status: Active Grant
First Claim
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1. A non-transitory computer readable information storage media including instructions, that when executed by one or more processors, cause to be performed 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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