eNB CGI Reporting via DRX State Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, existing methods fail to efficiently report cell global identity (CGI) information from user equipment (UE) to evolved node base stations (eNBs) during uplink/downlink data transmission, leading to degraded service quality due to the inability to switch to a discontinuous reception (DRX) state, which prevents decoding of neighbor cell broadcast channels and subsequent handover operations.
Innovation Solution
A method where the serving eNB requests measurement reports from neighbor eNBs, stops uplink/downlink data allocation, and allows the UE to switch to a DRX state for decoding CGI information from a neighbor cell's broadcast channel, ensuring timely reporting before a T321 cycle expires, and resumes data allocation once the information is received.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE continues uplink/downlink data transmission during CGI reporting, then data communication efficiency is maintained, but the UE cannot decode neighbor cell broadcast channels leading to degraded service quality
Solution Approach 1:
The patent dynamically adjusts the UE's reception state based on operational requirements. The eNB configures DRX parameters and triggers measurement reports only when needed for CGI reporting, allowing the UE to switch between active data transmission and DRX states for neighbor cell monitoring, thus adapting to different operational phases
Solution Approach 2:
The patent implements periodic DRX cycles with specific on-duration and off-duration periods. During off-duration, the UE can decode broadcast channels of neighbor cells to obtain CGI information, while during on-duration, normal data transmission resumes. This periodic structure balances data communication needs with neighbor cell monitoring requirements
2Loss of information
If the UE switches to DRX state to decode neighbor cell broadcast channels, then CGI information can be obtained, but uplink/downlink data resource allocation is interrupted
Solution Approach 1:
The eNB proactively configures DRX parameters and triggers measurement report requests before CGI information is actually needed. This preliminary configuration ensures the UE is already in the appropriate state to capture broadcast channels when CGI reporting becomes necessary, reducing the impact on data transmission
Solution Approach 2:
The patent modifies DRX parameters (on-duration, off-duration, periodicity) based on the specific requirements of CGI reporting and current data traffic conditions. By adjusting these parameters, the system optimizes the balance between time available for CGI acquisition and time available for data transmission, minimizing the impact on overall productivity
Data Source
AI summary
A resource allocation algorithm and operation procedure for user equipment (UE) to efficiently report cell global identity (CGI) information to an evolved node base station (eNB) in an automatic neighbor relation (ANR) operation procedure in a wireless communication system. According to an operating method of an eNB forCGI information reporting in a wireless communication system, a serving eNB receives a CGI information report and perform an ANR operation to maintain service quality through effective handover of UE at the edge of the service area of the serving eNB. When there is uplink/downlink data, the serving eNB stops data allocation to the UE and requests measurement reports (MRs) of neighbor eNBs, and the UE can be switched to a discontinuous reception (DRX) state during a DRX-inactivity time. Accordingly, it is possible to ensure decoding of a broadcast channel (BCH) of a neighbor cell and report CGI information.