Early Redcap Terminal Identification via Random Access Signaling
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Solution Overview
Problem
Current wireless communication systems face challenges in early identification of reduced capability (Redcap) terminals, which are distinct from ordinary terminals in terms of cost, complexity, and power efficiency, requiring specific configuration of parameters like eDRX, but existing methods lack efficient methods for early terminal type identification.
Innovation Solution
The method involves determining a preset mode for sending terminal type information from Redcap terminals to base stations, allowing for early identification using specific random access messages (msg1, msg3, msgA, or msg5) during the random access procedure, enabling accurate configuration of eDRX parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the network configures different parameters for different terminal types, then the network management accuracy is improved, but the complexity of parameter configuration increases
Solution Approach 1:
The patent applies preliminary action by having the terminal send terminal type information during the random access procedure (msg1, msg3, msgA, or msg5) before the network configures terminal-specific parameters. This allows the network to identify the terminal type early and prepare appropriate parameter configurations in advance, improving identification accuracy while managing configuration complexity through proactive information exchange
Solution Approach 2:
The patent segments the terminal identification process by introducing specific terminal type information that distinguishes Redcap terminals from ordinary terminals. This segmentation allows the network to apply different parameter configurations for different terminal types, improving management accuracy while the standardized segmentation approach helps manage the overall configuration complexity
2Loss of time
If terminal type information is sent during random access procedure, then the identification timing is improved, but the signaling overhead increases
Solution Approach 1:
The patent merges the terminal type information transmission with the existing random access procedure messages (msg1, msg3, msgA, or msg5). By combining the terminal type information with already-necessary signaling messages, the patent achieves early identification timing without adding separate dedicated signaling overhead, thus reducing the net increase in signaling quantity
Solution Approach 2:
The patent makes the random access messages serve multiple functions: their original purpose for random access plus carrying terminal type information. This multi-functionality allows early identification timing to be achieved while utilizing existing signaling infrastructure, thereby minimizing additional signaling overhead
Data Source
AI summary
An early identification method is performed by a base station, and includes: determining a preset mode for terminal type information; and receiving the terminal type information sent by a terminal, wherein the terminal type information is used for early identification of the terminal.