Two-Step Random Access TU-RNTI Resource Segmentation
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Solution Overview
Problem
The existing two-step random access process under the Contention-Based Random Access (CBRA) mechanism in 5G communication technology faces issues with high resource overheads and poor quality due to increased complexity and multiplexing of messages, leading to inefficiencies in resource usage and contention resolution.
Innovation Solution
A method that allows a User Equipment (UE) to use a specific resource associated with a Temporary UE Radio Network Temporary Identifier (TU-RNTI) for receiving a second message, enabling independent scheduling data reception and reducing the need for shared resources, while also determining the completion of the random access process based on the presence of a UE Contention Resolution Identity in the message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the two-step random access process under CBRA mechanism is used to reduce time delay and message number, then the random access speed is improved, but resource overheads increase and quality deteriorates
Solution Approach 1:
The patent segments the resource allocation by introducing a dedicated TU-RNTI for each UE performing two-step random access, separating the resource management from the shared pool approach. This segmentation allows independent resource allocation while maintaining the two-step process efficiency, thus reducing resource overheads without increasing time delay.
2Productivity
If multiple UEs share the same resource for receiving second message, then resource utilization is improved, but contention resolution quality deteriorates
Solution Approach 1:
The patent introduces TU-RNTI as an intermediary identifier that mediates between multiple UEs and the shared resource pool. Each UE is assigned a unique TU-RNTI that acts as a mediator for resource identification, allowing multiple UEs to share resources while maintaining distinguishable and resolvable contentions through their unique identifiers.
3Manufacturing precision
If dedicated resources are allocated to each UE for two-step random access, then resource allocation precision is improved, but device complexity increases
Solution Approach 1:
The patent makes the TU-RNTI mechanism universal by designing it to serve multiple functions: resource identification, contention resolution, and message addressing. This multi-functionality allows dedicated resource allocation precision without proportionally increasing complexity, as the same TU-RNTI structure handles multiple tasks that would otherwise require separate mechanisms.
Data Source
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AI summary
A random access method and device, a storage medium, a terminal, and a base station. The method comprises: sending a first message; and receiving a second message by using a first resource to complete a random access operation, wherein the first resource is used by a single UE, or the first resource is shared by a plurality of UEs having a conflict. The solution provided by the present invention can more reasonably implement a two-step contention-based random access operation.