Base Station Interference Control Cycle Adjustment
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Solution Overview
Problem
Current 3GPP standards for LTE and LTE Advanced lack a dynamic method to adjust the transmission cycle of interference control information between base stations, failing to effectively manage inter-cell interference coordination based on changing communication environments, leading to inefficient resource usage and increased traffic.
Innovation Solution
A base station equipped with a radio communication unit and an inter-base station communication unit that adjusts the transmission cycle of interference control information based on the usage of radio resources in both the local and neighboring base stations, shortening the cycle during increased usage and lengthening it during decreased usage to optimize interference control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interference control information is transmitted frequently to improve ICIC effectiveness, then interference control effectiveness is improved, but traffic between base stations increases
Solution Approach 1:
The patent applies dynamics by making the transmission cycle of interference control information adjustable rather than fixed. The base station dynamically changes the transmission cycle based on real-time radio resource usage conditions, transmitting more frequently when interference is likely and less frequently when conditions are stable, thus optimizing both interference control effectiveness and traffic reduction
Solution Approach 2:
The patent changes the parameter of transmission cycle frequency based on radio resource usage conditions. When radio resource usage exceeds a threshold indicating high interference risk, the transmission cycle is shortened; when usage is low, the cycle is lengthened. This parameter adaptation resolves the contradiction by matching transmission frequency to actual interference conditions
2Ease of operation
If interference control information is transmitted in a fixed cycle according to standards, then implementation simplicity is maintained, but adaptability to changing communication environments deteriorates
Solution Approach 1:
The patent transforms the static fixed-cycle transmission into a dynamic system where the transmission cycle automatically adjusts based on radio resource usage conditions. This maintains operational simplicity through automated threshold-based control while achieving environmental adaptability by responding to actual interference conditions
Solution Approach 2:
The patent implements feedback by monitoring radio resource usage conditions and using this information to adjust the transmission cycle of interference control information. The base station continuously evaluates whether usage exceeds thresholds and modifies transmission frequency accordingly, creating a closed-loop system that adapts to changing conditions while maintaining simple automated operation
Data Source
AI summary
A base station comprises a radio communication unit that uses a radio resource to perform radio communication with a radio terminal; an inter-base station communication unit that performs inter-base station communication with another base station; and a control unit that controls the radio communication unit and the inter-base station communication unit. The inter-base station communication unit comprises a transmission unit that transmits interference control information for controlling interference with the other base station, to the other base station; and a reception unit that receives information indicating a usage of the radio resource in the other base station, from the other base station. The control unit acquires the usage of the radio resource in the radio communication unit and changes a transmission cycle of the interference control information in accordance with at least one of the usage of the radio resource in the radio communication unit and the usage of the radio resource in the other base station.