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A non-contention preamble index generation method and base station

A preamble index and non-competition technology, which is applied in the non-competition preamble index generation method and the field of base stations, can solve problems affecting user experience, delay increase, service failure, etc., and achieve the effect of ensuring the success rate of detection

Active Publication Date: 2022-02-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method for generating a non-contention preamble index and a base station to solve the problem that in the prior art, when the preamble detection fails, the terminal needs to resend according to the PRACH cycle, resulting in increased delay, or requiring contention random access Or business failures that seriously affect user experience

Method used

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  • A non-contention preamble index generation method and base station
  • A non-contention preamble index generation method and base station
  • A non-contention preamble index generation method and base station

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Embodiment 1

[0044] refer to figure 1 , shows a flow chart of the steps of a method for generating a non-contention preamble index provided by an embodiment of the present invention. The method for generating a non-contention preamble index can be applied to a base station, and specifically includes the following steps:

[0045] Step 101: Obtain pre-configured physical random access channel configuration index information and preamble cyclic shift interval.

[0046] In this embodiment of the present invention, the base station may be any one of a macro base station, a micro base station, a pico base station, and a distributed base station. Specifically, it may be determined according to actual conditions, which is not limited in this embodiment of the present invention.

[0047] The physical random access channel configuration index information is PRACH configuration index information, and the PRACH configuration index information indicates the number of PRACH time-frequency resources and ...

Embodiment 2

[0139] refer to figure 2 , which shows a schematic structural diagram of a base station provided by an embodiment of the present invention, which may specifically include:

[0140] The index and shift interval acquisition module 210 is used to acquire the pre-configured physical random access channel configuration index information and preamble cyclic shift interval; the preamble sequence length acquisition module 220 is used to configure Index information to obtain the length of the preamble sequence; the preamble number acquisition module 230 of each sequence is used to obtain the preamble of each sequence that can be generated by each root sequence according to the length of the preamble sequence and the cyclic shift interval Number; the number of non-competition index acquisition module 240, used to obtain the non-competition preamble index and the number of non-competition preamble indexes generated in advance for the non-competition preamble under each beam; the minimum...

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Abstract

The invention provides a non-competition preamble index generation method and a base station. Including: obtaining pre-configured physical random access channel configuration index information and preamble cyclic shift interval; obtaining preamble sequence length; obtaining each root sequence that can be generated by each root sequence according to the preamble sequence length and cyclic shift interval The number of preambles; obtain the non-competition preamble index and the number of non-competition preamble indexes; obtain the minimum non-competition preamble index; Change the preamble index to generate a new minimum non-contention preamble index; according to each new minimum non-contention preamble index, and non-contention preamble indexes corresponding to each beam The contention preamble index generates a new non-contention preamble index combination. The invention can guarantee the detection success rate of the non-competition preamble.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a non-contention preamble index generation method and a base station. Background technique [0002] One of the key technologies of 5G (5th Generation Wireless Systems, fifth-generation mobile communication system) is multi-antenna technology. Based on the multi-antenna technology, the downlink synchronization signal and broadcast channel can be divided into multiple narrow beams, pointing to different directions in the sector, and the coverage depth can be improved without affecting the coverage angle range. [0003] At the same time, for these different broadcast beams, the 5G protocol stipulates that the total number of Preamble (random access preamble) and the number of contention preambles are grouped according to the number of beams, and the previous part of the index in the group is assigned to the contention preamble. The remaining indexes are allocated to the non-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W74/00H04W74/08
CPCH04L5/0048H04W74/002H04W74/0833
Inventor 刘昊天唐明环
Owner DATANG MOBILE COMM EQUIP CO LTD