RRC Resume MAC-I Verification for 5G Small Data Transmission
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Solution Overview
Problem
The 5G wireless communication system faces challenges in ensuring backward compatibility during RRC connection resume procedures and efficient small data transmission, particularly in handling resumeMAC-I verification and optimizing resource utilization in random access processes.
Innovation Solution
A method involving the transmission of a random access preamble, followed by a resume message authentication code (MAC-I) and uplink data size information, with subsequent validation and contention resolution, enhances both backward compatibility and resource efficiency in small data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resumeMAC-I verification is enhanced to include additional parameters for improved security, then security is improved, but backward compatibility deteriorates
Solution Approach 1:
The patent segments the MAC-I verification process into two distinct paths: one for legacy devices using traditional verification methods, and another for enhanced devices using the new security parameters. This segmentation allows the system to maintain backward compatibility while implementing improved security for capable devices
Solution Approach 2:
The patent introduces dynamic parameter selection where the verification process adapts based on device capabilities. The system dynamically determines which verification parameters to use based on whether the device supports the enhanced security features, allowing flexibility across different device types
2Productivity
If random access resources are allocated for small data transmission, then small data transmission capability is improved, but resource waste increases due to collision and contention
Solution Approach 1:
The patent applies preliminary action by having the UE report uplink data size information before actual data transmission. This allows the network to pre-allocate appropriate resources and avoid unnecessary contention, reducing resource waste while enabling efficient small data transmission
Solution Approach 2:
The patent enables self-service by allowing UEs with small data to autonomously indicate their data size and initiate the transmission process without full RRC connection establishment. This self-service mechanism reduces network signaling overhead and improves transmission efficiency
Data Source
AI summary
A communication method and system for converging a 5th generation (5G) communication system for supporting higher data rates beyond a 4th generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system includes intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method, a terminal, and a base station for small data transmission in a wireless communication system are provided.