CBRA and CFRA Resource Reporting for 5G Random Access Reliability
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Solution Overview
Problem
There is a need for a more efficient method and device for storing and reporting random access information in next-generation mobile communication systems, particularly regarding the reception strength of synchronization signal blocks (SSB) and channel state information-reference signals (CSI-RS) during random access.
Innovation Solution
A method and device that involve storing first and second resource information related to contention-based and contention-free random access, respectively, and transmitting these to a base station in response to a request, thereby enhancing the efficiency of reporting random access information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If random access information including SSB and CSI-RS reception strength is stored and reported, then the reliability of random access is improved, but the device complexity increases due to additional storage and processing requirements
Solution Approach 1:
The patent extracts only the essential random access information (SSB and CSI-RS reception strength) from the complete set of possible measurements, storing and reporting only these specific parameters. This selective extraction reduces the amount of data that needs to be processed and transmitted, thereby reducing device complexity while still providing sufficient information to improve random access reliability.
2Measurement precision
If detailed random access information is reported to the base station, then the measurement precision is improved, but the loss of time increases due to longer message transmission
Solution Approach 1:
The patent extracts and reports only the most critical measurement parameters (SSB and CSI-RS reception strength) rather than transmitting complete measurement datasets. This selective reporting maintains measurement precision for the essential parameters while significantly reducing the time required to transmit the information in the second message.
3Adaptability or versatility
If both contention-based and contention-free random access resource information is stored, then the adaptability is improved, but the quantity of information to be transmitted increases
Solution Approach 1:
The patent merges the storage and reporting of contention-based random access resource information with contention-free random access resource information into a unified data structure. By combining these related information types into a single organized format, the system achieves high adaptability for different random access scenarios while efficiently managing the total information quantity that needs to be transmitted in the second message.
Data Source
AI summary
The present disclosure relates to 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). The present disclosure may be applied to 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. The present invention discloses a method performed by a UE in a wireless communication system, the method includes storing first resource information related to a contention-based random access (CBRA) and second resource information related to a contention-free random access (CFRA); receiving, from a base station, a first message for requesting random access related information of the terminal; and transmitting, to the base station, a second message including the stored first resource information and the stored second resource information in response to the first message.