PRACH Repetition Parameter Control for Reliable Random Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge of determining how to transmit PRACH signals in cases where a terminal supports PRACH repetition transmission has not been adequately addressed, affecting communication system performance.
Innovation Solution
A PRACH signal transmission method and apparatus that determines parameters such as transmission power and resource sets for multiple PRACH signals, enabling effective transmission and enhancing communication system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PRACH repetition transmission is introduced to enhance PRACH coverage, then the transmission reliability is improved, but the device complexity increases due to the need to determine how to transmit multiple PRACH signals
Solution Approach 1:
The terminal autonomously determines the transmission parameters for multiple PRACH signals based on pre-configured parameters and predefined rules. The terminal self-manages the power allocation and resource selection without requiring complex network coordination, thereby improving reliability through repetition while keeping the device complexity manageable through self-service mechanisms.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting transmission power and resource allocation based on the repetition count and configured parameters. The terminal modifies transmission parameters (power, resources) according to predefined rules and feedback, enabling reliable repeated transmissions while maintaining manageable complexity through systematic parameter management.
2Reliability
If multiple PRACH signals are transmitted to improve communication system performance, then the transmission reliability is enhanced, but the use of energy increases due to repeated transmissions
Solution Approach 1:
The terminal transmits a configured number of repeated PRACH signals rather than continuous transmissions. By limiting the repetition count to a predefined or dynamically determined value, the system achieves sufficient reliability improvement while avoiding excessive energy consumption that would result from unlimited repetitions.
Solution Approach 2:
The transmission power and other parameters are dynamically adjusted based on the repetition count and channel conditions. The terminal modifies power levels and resource allocation for each repeated transmission, optimizing the balance between achieving reliable communication and minimizing energy consumption across the sequence of repeated signals.
Data Source
AI summary
A physical random access channel (PRACH) signal transmission method includes: determining, by a terminal, parameters of PRACH transmission, the parameters including at least one of the following: transmission power of a single PRACH signal and a PRACH resource set; and transmitting, based on the parameters, the PRACH signal, the PRACH transmission including a plurality of PRACH signals.