| 摘要 |
The present invention discloses a method, an apparatus and a system for processing very-high-speed random access, where the method includes: selecting a ZC sequence group according to a cell type and a first cyclic shift parameter Ncs, and setting N detection windows for each ZC sequence in the ZC sequence group, where N‰¥5; sending the cell type, a second Ncs, and the ZC sequence group to a user equipment UE, so that the UE selects a random access sequence from the ZC sequence group; receiving a random access signal sent by the UE, and obtaining the random access sequence from the random access signal; and performing correlation processing on the random access sequence with each ZC sequence in the ZC sequence group, detecting a valid peak value in the N detection windows of each ZC sequence, and determining an estimated value of a round trip delay RTD according to the valid peak value. A problem that it is difficult to detect a round trip delay correctly in a very-high-speed scenario is solved, so that a user equipment in a very-high-speed scenario can normally access a network, thereby improving network access performance. |
