Base Station Selective Radio Quality Measurement Control
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Solution Overview
Problem
In wireless communication systems, mobile stations face increased power consumption due to the need to measure radio qualities from multiple networks, leading to inefficient network load management and potential congestion-related connection issues.
Innovation Solution
A wireless base station and mobile station system where the base station communicates with the mobile station to determine which signals to measure based on radio quality measurements and battery state, while also considering network load information, and adjusts the measurement and connection strategies accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the mobile station measures radio qualities of signals from multiple networks (HetNet, CA, DC), then the network selection accuracy and handover performance improve, but the power consumption of the mobile station increases
Solution Approach 1:
The patent applies partial action by having the mobile station measure radio qualities selectively rather than continuously for all networks. The base station controls which frequency bands and networks the mobile station should measure based on current network conditions, mobile station state, and service requirements, thereby reducing unnecessary measurements and power consumption while maintaining adequate measurement accuracy for network selection and handover
Solution Approach 2:
The patent changes the measurement parameters dynamically by adjusting which frequency bands and networks the mobile station measures based on varying conditions such as network load, mobile station battery status, and service type. This allows the system to optimize between measurement accuracy and power consumption by adapting measurement scope to current requirements
2Adaptability or versatility
If the mobile station measures radio qualities of all available networks, then the network selection flexibility improves, but the processing load and complexity increase
Solution Approach 1:
The system implements partial action by having the mobile station perform measurements only on a subset of networks and frequency bands that are relevant to current conditions. The base station provides configuration information that limits the measurement scope to necessary networks, maintaining network selection flexibility while reducing processing complexity
Solution Approach 2:
The patent segments the measurement process by dividing it into different phases and targets. The mobile station measures different networks at different times based on base station instructions, segmenting the overall measurement task into manageable parts that reduce processing complexity while preserving adaptability
3Reliability
If the base station requires comprehensive radio quality measurements from the mobile station, then the handover success rate improves, but the user experience degrades due to increased power consumption
Solution Approach 1:
The patent dynamically changes measurement parameters such as which frequency bands and networks to measure, based on handover probability assessments. When handover is unlikely or conditions are stable, the base station reduces measurement requirements, thereby maintaining handover reliability when needed while improving user experience by reducing power consumption during stable conditions
Data Source
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AI summary
A wireless base station includes: a communication unit 101 configured to communicate with a mobile station which measures radio quality of a signal transmitted in each of a plurality of cells; an acquisition unit 102 configured to acquire load information related to a load of a network including a wireless base station forming the cell; and a control unit 103. The control unit 103 receives information indicating a measurement result of the radio quality of the signal transmitted in each of the plurality of cells and a state of a battery of the mobile station, from the mobile station via the communication unit, determines a signal, radio quality of which is to be measured by the mobile station, based on the measurement results of the radio qualities and the state of the battery of the mobile station, indicated in the information received, and the load information acquired by the acquisition unit, and notifies the signal determined to be measured to the mobile station via the communication unit.