Method for constructing rach preamble and method for transmitting RACH signal
A preamble and signal technology, applied in the field of constructing random access channels and transmitting RACH signals, to achieve the effect of reducing complexity
Active Publication Date: 2010-08-18
罗斯德尔动力有限责任公司
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However, the cell size may be
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A wireless communication system is disclosed. A method for constructing a RACH preamble according to a cell radius of a base station (BS) irrespective of a guard time (GT) and a method for allocating the RACH preamble are disclosed. A method for constructing a preamble of a random access channel (RACH) includes acquiring time-length information of a predetermined cyclic prefix (CP) for each cell radius of a base station (BS), acquiring sequence time-length information of a single sequence or a repeated sequence, and constructing the preamble using the predetermined CP time-length information and the sequence time-length information, irrespective of a time length of a guard time (GT).
Description
technical field The present invention relates to a wireless communication system, and to a method for constructing a Random Access Channel (RACH) and a method for transmitting RACH signals. Background technique Hereinafter, a method for constructing a random access channel (RACH) and a method for transmitting RACH signals will be described in detail. A method for preventing inter-symbol interference (ISI) from occurring when each symbol of a subcarrier is transmitted on a multipath channel in Orthogonal Frequency Division Multiplexing (OFDM) or Discrete Multi-Tone (DMT) is proposed, in the following A detailed description of the above method will be described. For example, a guard time (GT) longer than the maximum delay spread of the channel is inserted between consecutive symbols. In short, this guard time (GT) is called cyclic extension. The cyclic extension (CE) is classified into a cyclic prefix (CP) and a cyclic suffix (CS). A cyclic prefix (CP) copies a signal of...
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CPCH04W74/0833H04W74/0866H04W74/004H04B7/2606
Inventor 李玹佑韩承希卢珉锡郭真三权英现德拉甘·武伊契奇金东哲
Owner 罗斯德尔动力有限责任公司
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