RedCap Initial Access Using Dedicated BWPs and Early UE Identification
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Solution Overview
Problem
Existing 3GPP networks face challenges in efficiently managing initial access procedures for reduced-capability (redcap) NR devices due to their limited capabilities, leading to complications in configuring bandwidth parts, power consumption, and resource fragmentation, particularly in frequency hopping and system information updates.
Innovation Solution
Configuring redcap-specific initial downlink and uplink bandwidth parts, providing dedicated system information, and implementing early UE type identification mechanisms to optimize resource utilization and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If redcap devices use standard initial access procedures, then network compatibility is maintained, but device complexity and power consumption increase
Solution Approach 1:
The patent segments the initial access procedure into redcap-specific and standard procedures by introducing separate bandwidth part configurations (initial DL/UL BWPs) and random access channel resources for redcap devices, allowing simplified processing while maintaining network compatibility through standardized messaging formats
Solution Approach 2:
The patent applies local quality by providing tailored system information blocks (SIBs) and configuration parameters specifically for redcap devices, enabling optimized initial access procedures that match redcap capabilities while other device types continue using standard procedures
2Productivity
If redcap-specific bandwidth parts are configured, then resource efficiency improves, but system information complexity increases
Solution Approach 1:
The patent segments system information by introducing dedicated SIBs for redcap devices that contain specific bandwidth part configurations, random access parameters, and other access-related settings, separating redcap-specific information from standard system information
Solution Approach 2:
The patent applies preliminary action by pre-configuring redcap-specific initial downlink and uplink bandwidth parts with appropriate parameters before redcap devices attempt initial access, enabling devices to efficiently acquire and use optimized resources without real-time computation
3Productivity
If early UE type identification is implemented, then resource allocation efficiency improves, but processing overhead increases
Solution Approach 1:
The patent applies preliminary action by enabling the network to identify redcap UE types early during initial access through analysis of random access preamble sequences or messages, allowing immediate allocation of redcap-optimized resources before full connection establishment
Solution Approach 2:
The patent uses intermediaries such as specific random access preamble sequences or message formats that indirectly indicate UE type, allowing the network to identify redcap devices without requiring explicit capability reporting in early messages
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods for initial access and random access channel operations for reduced capability devices in wireless networks.