Physical random access channel sending and receiving methods, base station and user equipment

Abstract

The invention provides a method executed by a base station. The method comprises the following steps that: physical random access channel (PRACH) configuration parameters for user equipment are generated and transmitted; a random preamble sequence and corresponding PRACH resource sets sent by the user equipment are detected, so that the type and / or coverage enhancement level of the user equipment can be determined; and random access responses can be generated based on the type and / or coverage enhancement level of the user equipment. The invention also provides a method executed by the user equipment, a corresponding base station and user equipment. With the methods, base station and user equipment of the invention adopted, the resource utilization rate of LTE supported MTC user equipment can be improved, and frequency spectrum and energy efficiency can be improved, and time and frequency resource conflict between cells can be reduced.

Description

technical field [0001] The invention relates to the technical field of wireless communication. More specifically, the present invention relates to a method of transmitting / receiving a Physical Random Access Channel (PRACH) of a serving cell and a base station / user equipment. Background technique [0002] The Long Term Evolution (LTE) project deployed by the Third Generation Partnership Project (3GPP) aims to provide increasingly diverse future mobile communication services. Wireless cellular communication has increasingly become an indispensable part of public life and work. User equipment terminals There is also a trend of diversification. In the first version of 3GPP LTE (ie, Release8), Orthogonal Frequency Division Multiple Access (OFDMA) and Multiple Antenna (MIMO) technologies were introduced. The Release 10 version of 3GPP has been evaluated and tested by the International Telecommunication Union, and has officially become the fourth-generation global mobile communic...

AI Technical Summary

Problems solved by technology

[0004] Some MTC devices need to be installed in the basement of residential buildings or in locations protected by insulating foils, metal windows, or thick walls of traditional buildings. Compared with conventional equipment terminals (such as mobile phones, tablet computers, etc.) Interfaces will suffer significantly more severe penetration losses

3GPP decided to study the scheme design and performance evaluation of LTE network providing MTC equipment with additional 20dB coverage enhancement service. It is worth noting that MTC equipment located in poor network coverage areas has such characteristics: very low data transmission rate, very loose delay requirements, and limited mobility

[0007] Since some MTC devices require an additional 20dB coverage enhancement, the current PRACH design structure and configuration cannot meet this requirement, so it needs to be redesigned for the MTC equipment that requires an additional 20dB coverage enhancement (among them, the LTE FDD network provides 15dB coverage enhancement) PRACH or improve the current PRACH mechanism

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