Automated Cell Identifier Assignment in LTE Border Regions
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Solution Overview
Problem
In modern cellular communication networks, managing unique cell identifiers across adjacent cells from different Operation Support Systems (OSS) in border regions is challenging due to limited physical cell identities (PCI) and scrambling codes (SC), requiring manual administration and inefficient reuse of identifiers.
Innovation Solution
An automated method and apparatus for assigning cell identifiers in communication networks, which involves receiving available non-conflicting identifiers, selecting suitable ones common to multiple cell sets, and assigning them to respective cell sets, using a processor and memory to manage and update identifier values, reducing the need for manual administration in border areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual administration is used for cell identifier assignment in border regions, then uniqueness of cell identifiers can be maintained, but the complexity of network management increases and efficiency decreases
Solution Approach 1:
The system enables automated self-service for cell identifier assignment through SON functions. Each OSS automatically determines available cell identifiers in border regions by exchanging information with neighboring OSS, eliminating the need for manual administration while ensuring uniqueness through automated conflict detection and resolution mechanisms.
Solution Approach 2:
The system implements feedback mechanisms where OSS exchange information about used and available cell identifiers across border regions. This feedback loop allows automatic adjustment and verification of identifier assignments, ensuring uniqueness while reducing management complexity through iterative automated decision-making.
2Reliability
If reserved ranges are allocated to each OSS for cell identifiers, then uniqueness is ensured, but the reuse of limited identifiers is optimized poorly
Solution Approach 1:
The system transitions from static reserved ranges to dynamic identifier allocation. OSS automatically determine available identifiers in border regions based on real-time network conditions and neighboring OSS information, allowing flexible reuse of identifiers while maintaining uniqueness through automated coordination rather than fixed allocations.
3Extent of automation
If automated SON functions are used for cell identifier assignment, then manual administration is reduced, but ensuring uniqueness across multiple OSS becomes more difficult
Solution Approach 1:
The system merges the identifier management capabilities of multiple OSS through standardized information exchange protocols. Automated SON functions in each OSS are coordinated by sharing available identifier information across OSS boundaries, enabling unified automated decision-making that ensures uniqueness while maintaining the autonomy and automation level of individual OSS.
Data Source
AI summary
The present invention relates to a method and apparatus for automatically assigning cell identifier values in a communication network and to a method and apparatus for managing the assignment of cell identifier values in a communication network. In particular, the present invention relates to the management and assignment of cell identifier values that are required to be unique between adjacent cells, in a border region within a communication network in which cells from two or more cell sets are present. The present invention provides a novel method and apparatus for assigning cell identifier values in a communication network and for managing the assignment of cell identifier values in a communication network. Embodiments of the invention enable the automatic assignment of cell identifiers in a communication network, such as the assignment of physical cell identities (PCI) and scrambling codes (SC) in a Long Term Evolution (LTE) network. The need for manual administration in border areas between cell sets managed by different Operation Support Systems (OSSs) can therefore be reduced or eliminated.