NR UE CGI Reading via DRX Gap Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In New Radio (NR) networks, User Equipment (UE) faces challenges in acquiring Cell Global Identifier (CGI) information due to overlapping Synchronization Signal Block (SSB) and Remaining Minimum System Information (RMSI) occasions with Discontinuous Reception (DRX) durations, leading to incomplete or impossible CGI reading.
Innovation Solution
The method involves receiving a request to report CGI information, decoding system information using SSB and RMSI occasions during DRX off durations, creating autonomous gaps, or configuring specific gaps to interrupt data reception and transmission, thereby avoiding overlaps and enabling accurate CGI acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If UE uses DRX technique to reduce power consumption in CONNECTED mode, then power consumption is reduced, but the opportunity to decode MIB and SIB1 during DRX operation is lost when SSB and RMSI occasions overlap with DRX on durations
Solution Approach 1:
The patent implements dynamic adjustment of DRX configuration parameters (cycle length, on-duration, offset) based on the timing relationship between DRX on-durations and SSB/RMSI occasions. When overlaps are detected, the system dynamically modifies DRX parameters to ensure CGI reading opportunities are available, thus maintaining reliability while preserving power-saving benefits.
Solution Approach 2:
The system changes DRX operational parameters (cycle length, on-duration timing, offset values) to resolve conflicts between power saving and CGI acquisition. By adjusting these parameters, the system ensures that DRX on-durations do not completely overlap with SSB/RMSI occasions, enabling both power efficiency and reliable CGI reading.
2Reliability
If UE creates autonomous gaps to acquire CGI information, then CGI reading reliability is improved, but data reception and transmission are interrupted
Solution Approach 1:
The patent extracts CGI reading operations from the continuous data reception/transmission flow by creating dedicated autonomous gaps. During these gaps, the UE temporarily suspends data activities to focus on acquiring CGI information from SSB and RMSI, ensuring reliable reading while minimizing impact on overall data throughput.
Solution Approach 2:
The system performs preliminary configuration of autonomous gaps before CGI reading is needed. By pre-planning these gaps and their timing, the system ensures that CGI acquisition can proceed without last-minute disruptions to data transmission, thus reducing the productivity impact.
3Device complexity
If SSB and RMSI occasions are configured with fixed periodicity, then system operation is simplified, but overlaps with DRX on durations occur preventing CGI reading
Solution Approach 1:
The patent introduces dynamic coordination between DRX configuration and SSB/RMSI occasion timing. Rather than fixing both independently, the system dynamically adjusts DRX parameters based on the periodicity and timing of SSB/RMSI occasions, ensuring that overlaps are avoided while maintaining relatively simple configuration procedures.
Data Source
AI summary
Aspects of the disclosure can provide a method and an apparatus for Cell Global Identifier (CGI) reading in a New Radio (NR) system. The method can include receiving a request over a serving cell to report Cell Global Identifier (CGI) information of a target cell to a network node, and decoding system information to acquire the CGI information of the target cell by using Synchronization Signal Block (SSB) and Remaining Minimum System Information (RMSI) occasions in Discontinuous Reception (DRX) off duration of the serving cell, using at least one autonomous gap in data reception and transmission of the serving cell, or using at least one specific gap to interrupt data reception and transmission in DRX on durations of the serving cell. Subsequently, the CGI information of the target cell can be transmitted to the network node.