Neighbor Cell List Deduplication for Wireless Frequency Band Overlap
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Solution Overview
Problem
In wireless communications, the inclusion of multiple neighboring frequencies and cells across overlapping frequency bands leads to increased system information message sizes and unnecessary cell re-selection evaluations, particularly when mobile terminals support multiple bands.
Innovation Solution
A method to signal a neighbor list for the primary ARFCN and primary frequency band, allowing mobile terminals to use the primary band neighbor cell list for re-selection evaluation, and to remove duplicate neighbor cells from re-selection and measurement reporting, thereby considering ARFCNs of multiple bands for evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If neighbor cell lists include all neighboring frequencies and cells across overlapping frequency bands, then comprehensive cell coverage is achieved, but system information message size increases
Solution Approach 1:
The patent merges neighbor cell lists from multiple overlapping frequency bands into a single consolidated list, eliminating duplicate neighbor cell entries. This combining approach maintains comprehensive cell coverage while reducing the overall message size by removing redundancies across bands 5, 18, and 19.
Solution Approach 2:
The patent identifies and discards duplicate neighbor cell entries that appear across multiple overlapping frequency bands. By removing these redundant inclusions while preserving the unique neighbor cell information, the system achieves both comprehensive coverage and reduced message size.
2Reliability
If mobile terminal evaluates cell re-selection for all bands, then complete network coverage is ensured, but processing time and operations increase
Solution Approach 1:
The patent extracts and removes duplicate neighbor cell evaluations from the cell re-selection process. By identifying that the same neighbor cells appear across multiple bands and eliminating redundant evaluations, the system ensures complete network coverage while significantly reducing processing time and operational overhead.
3Reliability
If duplicate neighbor cells are included in neighbor cell list, then all possible cells are listed, but measurement reporting evaluations become redundant
Solution Approach 1:
The patent systematically identifies duplicate neighbor cell entries in the neighbor cell list and removes them while preserving the complete set of unique neighbor cells. This approach maintains listing completeness for all possible cells while eliminating redundant measurement reporting evaluations, thereby improving overall system productivity.
Data Source
AI summary
In accordance with an example embodiment of the present invention, an apparatus comprising: at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor cause the apparatus to perform at least the following: receive a neighbor cell list for a primary frequency band; and evaluate one or more available secondary frequency bands based on the neighbor cell list for the primary frequency band for reselection.