Patent ID: 9661641
Date: 2017-05-23
CPC Classifications: H04W

Claim:
1. A logic root sequence index configuration method for decreasing a false random access alarm of a serving cell in a cellular telecommunications system, the method comprising: sequentially searching a logic root sequence index occupancy table for a plurality of logic root sequence indexes (LRSIs) that are not occupied by a neighboring cell; using each logic root sequence index (LRSI) among the plurality of LRSIs as a lookup parameter; finding a plurality of interference coefficients; wherein, each of the plurality of interference coefficients corresponding to one LRSI from a preset interference coefficient table, wherein the interference coefficient of a sounding reference signal of the neighboring cell is recorded in the interference coefficient table, and the interference coefficient of the sounding reference signal is for detection of a physical random access channel of the serving cell under a condition that a physical cell identifier of the neighboring cell and each LRSI is given; and outputting a first LRSI from among the plurality of LRSIs as an initial LRSI of the serving cell when none of the interference coefficients corresponding to the plurality of LRSIs is greater than an interference coefficient threshold, thereby decreasing the false random access alarm of the serving cell.