Collaborative Neighbor Management in Small Cell Networks
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Solution Overview
Problem
Current mechanisms for managing neighbor relationships in small cell architectures are expensive, do not scale, and rely on manual configuration or UE capabilities, which are limited in visibility and require state-of-the-art UEs, especially for inter-frequency and inter-RAT neighbors.
Innovation Solution
A system and method for collaborative neighbor management that populates a neighbor list using neighbor information gathered through network listen and grid discovery, with UE measurement reports, and updates the list based on primary scrambling codes (PSCs) received, allowing for automatic neighbor relation management and prioritization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual configuration methods are used for neighbor relationship management, then implementation simplicity is maintained, but scalability and automation capability deteriorate
Solution Approach 1:
The system enables small cell access points to automatically discover and manage their own neighbor relationships through self-organizing mechanisms. The AP autonomously performs network listening, grid discovery, and neighbor list updates without requiring manual configuration, thereby achieving both automation capability and implementation simplicity through standardized protocols
Solution Approach 2:
The system performs preliminary neighbor relationship establishment through automated network listening and grid discovery procedures before actual mobility management is needed. By pre-populating neighbor lists with detected neighbors and their characteristics, the system eliminates the need for manual configuration while maintaining implementation simplicity through standardized initial setup procedures
2Measurement precision
If state-of-the-art UE capabilities are required for neighbor detection, then detection precision improves, but device compatibility and deployment cost worsen
Solution Approach 1:
The small cell access point acts as an intermediary that performs the complex detection and measurement functions on behalf of user equipment. The AP conducts network listening and grid discovery to detect neighbors and their characteristics, then provides this information to UEs through standardized signaling. This approach achieves high detection precision without requiring advanced UE capabilities, thereby maintaining broad device compatibility
Solution Approach 2:
The patent replaces the requirement for advanced UE hardware capabilities with a software-based solution implemented at the access point. By moving the detection functionality from the UE (mechanical/hardware constraint) to the AP (software-controlled system), the solution achieves high measurement precision through standardized protocols while maintaining compatibility with legacy UE devices
3Quantity of substance
If comprehensive neighbor information is collected through network listening and grid discovery, then neighbor list completeness improves, but system complexity and processing overhead worsen
Solution Approach 1:
The system segments the neighbor discovery process into distinct phases: network listening for initial neighbor detection, grid discovery for additional neighbor identification, and measurement report processing for refinement. By dividing the comprehensive information collection into manageable segments, the system achieves complete neighbor lists while controlling processing overhead through structured, modular operations
Solution Approach 2:
The system performs partial neighbor discovery through network listening and grid discovery, then supplements with UE measurement reports to achieve complete neighbor information. Rather than attempting to collect all neighbor data through a single complex mechanism, the system uses multiple simpler actions that collectively achieve comprehensive coverage while managing system complexity
4Productivity
If automatic neighbor relation management is implemented, then operational efficiency improves, but configuration flexibility and control worsen
Solution Approach 1:
The system implements automatic neighbor relation management with feedback mechanisms where UE measurement reports are used to validate and refine the neighbor lists initially created through network listening and grid discovery. This feedback loop maintains operational efficiency through automation while preserving configuration flexibility, as operators can adjust parameters like measurement thresholds and neighbor list update policies based on network conditions
Data Source
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AI summary
A method is provided in one example embodiment and may include populating a neighbor list including one or more neighbors for a cell radio using neighbor information gathered for the cell radio; receiving a detected set measurement report from a user equipment (UE), wherein the measurement report includes, at least in part, one or more primary scrambling codes (PSCs) for one or more other neighbors detected by the UE; and updating the neighbor list to include one or more of the other neighbors based, at least in part, on whether any of the one or more PSCs received in the measurement report are included in the previously gathered neighbor information.