Terminal MIMO Capability Signaling for Radio Resource Scheduling
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Solution Overview
Problem
Conventional radio communication systems fail to check whether a terminal device can use multiple MIMO methods with different maximum numbers of layers, leading to inefficient utilization of communication resources between the terminal device and the base station.
Innovation Solution
The terminal device notifies the base station of its capability to use multiple MIMO methods with different maximum numbers of layers, enabling the base station to set an appropriate MIMO method for communication, thereby enhancing resource utilization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device notifies the base station of its capability to use multiple MIMO methods with different maximum numbers of layers, then the utilization efficiency of radio communication resources is improved, but the complexity of capability information exchange increases
Solution Approach 1:
The patent changes the parameter representation by introducing a field that indicates the maximum number of MIMO layers (e.g., 2 layers or 4 layers) rather than listing all supported MIMO methods. This parameter-based approach allows the base station to understand terminal capabilities without receiving exhaustive capability lists, thus improving resource utilization efficiency while controlling information exchange complexity.
Solution Approach 2:
The patent extracts the essential capability information (maximum number of MIMO layers) from the complete set of MIMO method capabilities. By taking out only the critical parameter needed for resource scheduling, the system achieves efficient resource allocation without the overhead of transmitting full capability detail, resolving the contradiction between productivity improvement and complexity increase.
2Device complexity
If the base station device schedules communication based on limited MIMO capability information, then the complexity of scheduling is reduced, but the utilization efficiency of communication resources degrades
Solution Approach 1:
The patent transforms the scheduling approach by using a simplified parameter (maximum number of MIMO layers) that captures the essential capability needed for resource allocation. This parameter change enables the base station to perform scheduling with appropriate complexity while achieving high resource utilization efficiency, as the simplified parameter provides sufficient information for optimal scheduling decisions.
Solution Approach 2:
The patent applies partial action by requesting only the necessary capability information (maximum MIMO layers) rather than all possible MIMO method details. This partial information approach is sufficient for effective scheduling and resource allocation, achieving good scheduling complexity-performance tradeoff without the overhead of complete capability exchange.
3Ease of operation
If the terminal device uses only the conventional mechanism of including MIMO capability in terminal capability information, then the ease of operation is maintained, but the utilization efficiency of communication resources deteriorates
Solution Approach 1:
The patent enhances the universality of the capability information field by making it serve multiple purposes: it indicates both the maximum number of MIMO layers and enables the base station to perform appropriate scheduling. This multi-functional use of the capability information field maintains terminal device operational simplicity while significantly improving resource utilization efficiency through better base station scheduling decisions.
Data Source
AI summary
A terminal device (10) capable of radio communication with a plurality of base station devices (50) includes: an acceptance unit (11) that accepts an enquiry about capability information of the terminal device (10) from one base station device among the plurality of base station devices (50); a notification unit (13) that, when the terminal device (10) can communicate with the plurality of base station devices (50) located at different positions, notifies the one base station device of availability information indicating that a plurality of MIMO methods with different maximum numbers of layers which are available to the terminal device can be used, as the capability information, based on the enquiry; and a receiving unit (15) that receives a radio signal transmitted from the one base station device by using a MIMO method which is set based on the capability information. Consequently, it is possible to provide a radio communication technology for enhancing utilization efficiency of radio communication resources between the terminal device (10) and the base station device(s) (50).