MSG-3 Auxiliary Information Transmission for Pre-RRC NR Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In New Radio (NR) systems, network devices cannot obtain auxiliary information about user equipment (UE) before the RRC connected state, leading to suboptimal configuration and scheduling, which affects transmission performance.
Innovation Solution
The UE transmits auxiliary information using MSG-3 or MSG-A messages, including details like power compensation, bandwidth capability, and MIMO layers, allowing the network to perform targeted configuration and scheduling before the RRC connection is established.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network device waits until the RRC connected state to obtain auxiliary information, then the information accuracy is ensured, but the transmission performance deteriorates due to delayed configuration and scheduling
Solution Approach 1:
The patent applies preliminary action by enabling the UE to transmit auxiliary information during the random access procedure (before RRC connection is established) using MSG3 or MSG-A messages. This allows the network device to obtain configuration information in advance, perform targeted scheduling and configuration before the RRC connection is fully established, thereby improving transmission performance without compromising information accuracy
2Productivity
If the auxiliary information is transmitted before the RRC connected state, then the transmission performance is improved, but the device complexity increases due to additional message handling
Solution Approach 1:
The patent merges the transmission of auxiliary information with the existing random access message structure (MSG3 or MSG-A). Instead of creating a separate information transmission channel, the auxiliary information is embedded within the random access procedure messages that are already part of the standard protocol flow. This approach improves transmission performance while minimizing additional device complexity by reusing existing message frameworks
Data Source
AI summary
An auxiliary information transmission method, a terminal device, and a network device. The method includes: transmitting auxiliary information by using a target message, where the target message includes an MSG-3 message or an MSG-A message, and the auxiliary information includes at least one of the following content: a power compensation value expected by the terminal device, a bandwidth capability, a modulation scheme supported by the terminal device, a maximum MIMO layer supported by the terminal device, a quantity of receive antennas of the terminal device, an RRM measurement report, a target serving cell, an expected PDCCH aggregation level, expected times of repetition transmission, and a transmit power capability.