Random Access Method Multiple Initial UL BWPs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G NR technologies struggle to meet the requirements of mid-range IoT devices, particularly in terms of bandwidth configuration and power saving, leading to access failures in unlicensed spectrum due to limited Initial Uplink Bandwidth Parts (UL BWP) being easily occupied.
Innovation Solution
Configuring multiple Initial UL BWPs with Physical Random Access Channel (PRACH) resources, each with different frequency and time domain positions, to improve access reliability and reduce the likelihood of failure in unlicensed spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple Initial UL BWPs with PRACH resources are configured, then access reliability is improved, but device complexity increases
Solution Approach 1:
The patent divides the uplink bandwidth into multiple Initial UL BWPs (Bandwidth Parts), each containing PRACH resources. This segmentation allows the terminal to select from multiple independent access resources, improving access reliability while managing complexity through structured resource division.
Solution Approach 2:
The patent introduces frequency domain differentiation by configuring Multiple Initial UL BWPs at different frequency positions. This dimensional expansion from a single BWP to multiple BWPs provides additional access paths, enhancing reliability without proportionally increasing terminal complexity.
2Adaptability or versatility
If differentiated bandwidth configuration is implemented for Redcap terminals, then adaptability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent creates a universal random access configuration that works for both normal UEs and Redcap terminals. By defining Multiple Initial UL BWPs with PRACH resources that can be selectively used, the system achieves multi-functionality without requiring separate complex procedures for different terminal types.
Solution Approach 2:
The patent modifies the random access resource configuration parameters by introducing multiple Initial UL BWPs with different frequency positions and bandwidths. This parameter differentiation enables adaptability to various terminal capabilities while maintaining operation through standardized selection procedures.
Data Source
AI summary
A method for random access is performed by a terminal, and includes: determining random access resource configuration information, wherein the random access resource configuration information is configured to indicate a plurality of initial uplink bandwidth parts, and wherein each initial uplink bandwidth part of the plurality of initial uplink bandwidth parts comprises a physical random access channel (PRACH) resource; and performing random access based on the random access resource configuration information.