Two-step RACH PUSCH Allocation Over Multiple Resource Block Sets
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Solution Overview
Problem
In wireless communication systems, particularly in 5G NR, the existing random access procedures face challenges in efficiently allocating resources for the physical uplink shared channel (PUSCH) across multiple resource block sets, leading to potential collisions and increased listen-before-talk (LBT) requirements, which can hinder efficient data transmission.
Innovation Solution
The proposed solution involves configuring the user equipment (UE) to receive specific parameters for PUSCH resources within each resource block set, allowing for efficient identification and transmission of PUSCH without overlapping boundaries between resource block sets, thereby minimizing additional LBT and ensuring successful data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PUSCH resources are allocated across multiple resource block sets without proper configuration, then resource utilization increases, but collisions and LBT requirements increase
Solution Approach 1:
The patent divides the uplink bandwidth into multiple resource block sets, each independently configured for PUSCH resources. This segmentation allows the system to utilize multiple resource blocks while maintaining independent control over each set, thereby preventing collisions and reducing LBT requirements by confining transmissions to specific segments rather than allowing unrestricted access across all blocks.
Solution Approach 2:
The patent applies different configurations to different resource block sets, where each set can have its own PUSCH resource parameters. This local quality approach allows optimization of each resource block set independently, enabling reliable transmission by tailoring resources to local conditions while maintaining overall high resource utilization across the entire bandwidth.
2Productivity
If PUSCH resources are allocated without specific parameters per resource block set, then configuration complexity decreases, but resource allocation efficiency decreases
Solution Approach 1:
The patent segments the resource block configuration into multiple independently configurable sets, each with its own PUSCH parameters. This segmentation enables efficient resource allocation by allowing the system to activate only the necessary resource block sets based on traffic demands, thereby improving allocation efficiency without requiring complex global coordination across all blocks.
Solution Approach 2:
The patent introduces dynamic configuration where resource block sets can be activated or deactivated based on current system conditions and traffic requirements. This dynamic approach allows the system to adapt resource allocation efficiency to varying demands while maintaining manageable configuration complexity through on-demand activation rather than permanent configuration of all possible resources.
3Adaptability or versatility
If PUSCH transmission boundaries overlap between resource block sets, then resource flexibility increases, but additional LBT requirements increase
Solution Approach 1:
The patent defines clear boundaries between resource block sets, with each set containing self-contained PUSCH resources. This segmentation prevents boundary overlaps between sets while maintaining resource flexibility within each set, thereby eliminating additional LBT requirements that would arise from cross-boundary transmissions while still allowing flexible resource allocation within the confines of each segmented block set.
Solution Approach 2:
The patent applies localized resource configuration within each resource block set, allowing flexible PUSCH resource allocation within the boundaries of each set without requiring coordination or additional LBT procedures across set boundaries. This local quality approach maintains adaptability within each segment while simplifying the overall system by preventing harmful cross-boundary overlaps.
Data Source
AI summary
A UE receives a configuration for a message A (Msg A) physical random access channel (PRACH) over a resource block (RB) set for a two-step random access channel (RACH) operation and receives one or more parameters for a Msg A physical uplink shared channel (PUSCH) configuration. The UE transmits a Msg A in a configured Msg A PRACH occasion and a Msg A PUSCH resource based on an RB set for the Msg A PRACH and the one or more parameters for the Msg A PUSCH configuration.