Carrier Aggregation Measurement Configuration Management
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing measurement configurations across multiple component carriers, particularly in determining which carrier to use for measurement and lack flexibility when adding or modifying carriers.
Innovation Solution
The system employs an RRC connection reconfiguration message to transmit measurement configuration messages between base station and mobile station apparatuses, allowing for the configuration of measurement parameters specific to each carrier, including measurement identifiers, objects, and reporting configurations, enabling efficient management and flexible measurement settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a measurement method for single-cell communication is applied to multi-carrier communication, then the system can maintain simplicity in measurement management, but it becomes unclear which component carrier should be used as the serving cell for measurement
Solution Approach 1:
The patent segments the measurement management by introducing separate measurement configurations for different component carriers. Each component carrier can be independently configured as a serving cell or a neighboring cell, allowing the mobile station to perform measurements on specific carriers without confusion about which carrier to use. This segmentation resolves the ambiguity in multi-carrier measurement scenarios.
2Ease of manufacture
If measurement parameters are set without considering carrier-specific parameters, then the configuration process is simplified, but measurement configuration lacks flexibility when component carriers are added or modified
Solution Approach 1:
The patent implements dynamic measurement configuration where measurement parameters can be individually adjusted for each component carrier. When carriers are added or modified, the system can dynamically update measurement configurations without requiring complete reconfiguration. This includes dynamically adding or removing component carriers from serving cell or neighboring cell groups based on network conditions and requirements.
3Stability of the object's composition
If measurement configuration is not updated when component carriers are added or modified, then the system maintains stability, but the measurement configuration becomes outdated and ineffective
Solution Approach 1:
The patent establishes a feedback mechanism where the base station monitors the status of component carriers and automatically updates measurement configurations when changes occur. When a component carrier is added, modified, or removed, the base station receives feedback about the current configuration state and sends updated measurement configuration messages to the mobile station, ensuring the configuration remains synchronized with the actual network state.
Data Source
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AI summary
Provided are a communication system, a base station apparatus, a mobile station apparatus, and corresponding communication methods. A mobile station apparatus (200) comprises: wireless circuitry (203) configured to: communicate with a base station apparatus by carrier aggregation using a plurality of serving cells, wherein a carrier frequency of a serving cell of the plurality of serving cells is different from a carrier frequency of another serving cell of the plurality of serving cells, and receive, from the base station apparatus, a measurement configuration which includes a reporting configuration, a measurement object and a measurement identity which links the measurement object to the reporting configuration, wherein the measurement object indicates a carrier frequency corresponding to a measurement; and radio resource control circuitry (209) configured to perform the measurement, wherein in case that an entry condition of the event corresponding with an event identity of the reporting configuration is fulfilled, the wireless circuitry is configured to transmit, to the base station apparatus, a measurement report which includes measurement results of all of the serving cells.