UE Configuration Management in CoMP Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In LTE systems, particularly in CoMP environments, there is a need for efficient management and allocation of resources to address interference and ensure reliable data transmission, especially for User Equipment (UE) experiencing severe interference or located remotely from an eNB.
Innovation Solution
A method and apparatus for performing Radio Resource Control (RRC) operations in a UE, specifically handling Physical Uplink Control Channel (PUCCH)/Sounding Reference Signal (SRS) release requests from the MAC layer, which involves releasing configuration information such as CQI-ReportPeriodic, CQI-ReportConfigSCell, SoundingRS-UL-ConfigDedicated, and SchedulingRequestConfig to manage resource allocation effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If configuration information is maintained for all serving cells in CoMP environment, then measurement and reporting capability is improved, but device complexity and resource consumption increase
Solution Approach 1:
The patent segments the measurement configuration by introducing the concept of measurement sets divided into active measurement sets and dormant measurement sets. This segmentation allows the UE to maintain detailed measurement configurations only for active serving cells while using simplified configurations for dormant cells, thereby reducing overall device complexity while preserving measurement precision for cells that require it.
Solution Approach 2:
The patent applies local quality by differentiating measurement requirements across different serving cells. Active measurement sets receive full measurement configuration resources while dormant measurement sets use reduced configuration. This localized differentiation optimizes resource allocation by applying high measurement precision only where needed rather than uniformly across all cells.
2Productivity
If measurement configuration is released upon PUCCH/SRS release request, then resource allocation efficiency is improved, but transmission reliability may deteriorate
Solution Approach 1:
The patent implements dynamic measurement configuration management where the measurement configuration is not permanently released but transitioned to a dormant state. This dynamic approach allows the system to quickly reactivate measurements when needed, maintaining transmission reliability while improving resource allocation efficiency during normal operation by releasing configurations only when uplink resources are released.
Solution Approach 2:
The patent applies preliminary action by maintaining dormant measurement sets that preserve measurement configuration information in a suspended state. When uplink resources need to be reactivated, the dormant configurations can be quickly restored without requiring full reconfiguration, thus preliminarily preparing the system for potential transmission needs while currently freeing up resources.
Data Source
Figure 1~3
Figure 4~6
Figure 7
AI summary
A method for configuring configuration information with a user equipment in a mobile communication system is provided. The method includes determining, upon receipt of a Physical Uplink Control Channel/Sounding Reference Signal (PUCCH/SRS) release request from a lower layer, whether configuration information required for a transmission mode supporting Coordinated Multi-Point (CoMP) has been configured, and if the configuration information has been configured, reconfiguring a setting state of the configuration information.