Base station and user equipment and methods thereof

Abstract

The present disclosure provides a method performed by a base station. The method comprises: generating and transmitting a Physical Random Access Channel (PRACH) configuration parameter for a User Equipment (UE); detecting a random preamble sequence and / or a corresponding PRACH resource set transmitted from the UE, so as to determine a type and / or a coverage enhancement level of the UE; and generating a Random Access Response (RAR) based on the type and / or the coverage enhancement level of the UE. The present disclosure also provides a method performed by a UE and correspondingly a base station and a UE. With the present disclosure, it is possible to increase resource utilization for LTE to support MTC UEs, improve frequency spectrum / energy efficiency, and reduce time / frequency resource conflicts between cells.

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, Release 8), 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 communi...

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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