Radio Capability Synchronization for 5G-4G Handover Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently processing radio access information in inter-RAT or intra-RAT situations, particularly in 5G-4G interworking scenarios, due to mismatched radio capability information between network entities and user equipment, leading to inefficient communication and performance issues.
Innovation Solution
A method and apparatus for processing radio access information by comparing and updating radio capability information using least significant bits (LSBs) to ensure synchronization and compatibility between network entities and user equipment, facilitating efficient communication through non-access stratum (NAS) protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access information is transmitted using conventional methods without specific optimizations, then the basic communication function is maintained, but the transmission reliability deteriorates in scenarios with poor channel conditions
Solution Approach 1:
The patent changes the parameter of access information by mapping it to QPSK modulation symbols instead of using conventional modulation schemes. This parameter transformation makes the access information more robust against channel impairments such as fading and interference, thereby improving transmission reliability in poor channel conditions without requiring additional transmit power.
2Reliability
If access information is transmitted with higher power to overcome poor channel conditions, then transmission reliability improves, but power consumption increases
Solution Approach 1:
The patent replaces the mechanical approach of increasing transmit power with a signal processing approach. By mapping access information to QPSK symbols and utilizing the demodulation reference signal for channel estimation and compensation, the system achieves reliable transmission through intelligent signal design rather than brute-force power increase, thereby reducing power consumption while maintaining reliability.
3Reliability
If conventional access information transmission methods are used, then device complexity remains low, but transmission reliability deteriorates
Solution Approach 1:
The patent makes the demodulation reference signal serve multiple functions: it acts as both a reference for channel estimation and as the carrier for access information transmission. This multi-functionality allows the system to improve reliability without adding separate dedicated resources or complex processing structures, thereby maintaining relatively low device complexity while achieving enhanced transmission reliability.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The disclosure relates to a method and apparatus for processing access information in a wireless communication system. According to an embodiment of the disclosure, according to a method of transmitting terminal capability information in a wireless communication system, a target base station may receive terminal radio access capability (UE radio capability) information and version information about a terminal radio access capability ID (UE radio capability ID) from a target mobility management entity (MME), the target base station may generate a transparent container including the terminal radio access capability information and the terminal radio access capability ID information received from the MME, the target base station may transmit the generated transparent container to a source base station, and the generated transparent container may be transmitted from the source base station to the terminal.