Cell Assignment Configuration Circuit for Wireless Distributed Communications Systems
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Solution Overview
Problem
In wireless distributed communications systems, the use of Inter-Cell Interference Coordination (ICIC) leads to reduced radio resources for non-ICIC-engaged remote units, even though they are not exposed to interference from neighboring cells, resulting in suboptimal network capacity and increased costs.
Innovation Solution
A cell assignment configuration circuit identifies non-ICIC-engaged remote units and reassigned them to non-ICIC-engaged cells, optimizing resource allocation by avoiding the division of radio resources for units not exposed to interference, thereby increasing network capacity without additional costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If ICIC is engaged for all remote units to coordinate with neighboring cells, then interference is reduced, but radio resources are divided and network capacity decreases
Solution Approach 1:
The patent applies local quality by differentiating between ICIC-engaged and non-ICIC-engaged remote units based on their specific interference exposure conditions. Remote units are assigned to cells based on whether they require ICIC protection, allowing interference coordination only where necessary while preserving full resource access for units that don't need it.
2Reliability
If radio resources are divided for ICIC coordination, then interference is avoided, but resource utilization efficiency decreases
Solution Approach 1:
The patent segments the remote unit population into ICIC-engaged and non-ICIC-engaged groups, and similarly segments cells into those that engage in ICIC and those that don't. This segmentation allows resource allocation to be optimized for each group, avoiding unnecessary resource division for units that don't require ICIC protection.
3Object-affected harmful factors
If all remote units are assigned to ICIC-engaged cells, then interference coordination is maintained, but costs increase due to reduced capacity
Solution Approach 1:
The patent implements dynamic cell assignment where remote units can be reassigned between ICIC-engaged and non-ICIC-engaged cells based on changing conditions. The system continuously evaluates which remote units are actually exposed to interference and adjusts assignments accordingly, allowing the network to adapt resource allocation to current interference conditions rather than maintaining static ICIC engagement for all units.
Data Source
AI summary
Automatic configuration of cell assignment of non-Inter-Cell Interference Coordination (ICIC)-engaged remote units in a wireless distribution communications system (WDCS) to non-ICIC-engaged WDCS cells to avoid or reduce dividing radio resources. The WDCS is configured to identify which remote units are “ICIC-engaged remote units.” A cell assignment configuration circuit is configured to identify ICIC-engaged WDCS cell(s) (i.e., in ICIC relation with a neighboring cell) among the WDCS cells in the WDCS, based on determining the WDCS cells assigned to ICIC-engaged remote units. The cell assignment configuration circuit is configured to determine a cell assignment configuration for the WDCS based on reassigning non-ICIC-engaged remote units assigned to the identified ICIC-engaged WDCS cells to non-ICIC-engaged WDCS cells. In this manner, radio resources for servicing non-ICIC-engaged remote units are not divided among non-ICIC-engaged remote units.