Method, device and system for adjusting PRACH configuration information

Abstract

The invention discloses a method for adjusting physical random access PRACH configuration information; the method comprises the following steps that: in a long-termed evolution LTE system, when in work, a first base station receives the PRACH configuration information sent by at least one second base station which is adjacent to the first base station; the PRACH configuration information at least comprises an initial root sequence index, a cyclic shift parameter index zero correlation zone config and a prach-config index which are used by the second base station; the first base station correspondingly adjusts the local PRACH base station configuration information according to the received PRACH configuration information of the at least one second base station so as to reduce the interference between a community under the jurisdiction of the first base station and the community under the jurisdiction of the at least one second base station. Consequently, the invention reduces the interference of the adjacent communities, improves the random access success rate of a user so as to improve the performance and the service quality of the whole system. Simultaneously, the invention discloses the base station and the LTE system.

Description

technical field [0001] The present application relates to the field of communications, and in particular, to a ground, an apparatus and a system for allocating PRACH channels. Background technique [0002] In the Long Term Evolution, LTE system, a terminal uses a Physical Random Access Channel (Physical Random Access Channel, PRACH) to perform uplink random access to establish an uplink with each cell. There are many related configuration information of PRACH channel (hereinafter referred to as PRACH configuration information), including: [0003] Preamble sequence (preamble sequence): Each PRACH channel includes multiple preamble sequences. If the terminal needs to initiate random access, it will randomly select one of these preambles and send it up through the PRACH channel; [0004] The root sequence is used to generate the preamble sequence; [0005] The cyclic shift parameter (cyclic shift) is used to cyclically shift the root sequence to generate the preamble sequenc...

AI Technical Summary

Problems solved by technology

[0009] However, based on the current 3GPP protocol, the base station (eNB) in the LTE system cannot obtain the PRACH configuration information of neighboring cells during operation. Therefore, when setting the PRACH configuration information of an eNB, it cannot refer to the PRACH configuration information of its neighboring cells PRACH configuration, it is difficult to accurately set the PRACH configuration information of the eNB, which can easily cause interference between cells, and seriously affect the quality of service of the LTE system.

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