Carrier Aggregation Scheduling with Virtual CC Resource Allocation
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Solution Overview
Problem
The conventional carrier aggregation function in wireless communication systems faces a significant resource allocation overhead due to the need for scheduling data resources for each of the bundled component carriers.
Innovation Solution
The proposed solution involves performing frequency domain resource allocation with a granularity different from that of the component carriers, utilizing a virtual CC unit, BWP unit, or PRB unit, and allowing for non-continuous carrier aggregation and scheduling, which includes options for applying the same or different FDRA types to different BWPs within a virtual CC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation is used to allocate wide band data resources by bundling multiple component carriers, then data transmission capacity is improved, but resource allocation overhead increases due to scheduling requirements for each component carrier
Solution Approach 1:
The patent merges multiple component carriers into a single virtual carrier by introducing a virtual CC unit that aggregates multiple BWPs from different component carriers. This allows the terminal to perform frequency domain resource allocation on the virtual CC unit level rather than on each individual component carrier, thereby reducing scheduling overhead while maintaining the capacity benefits of carrier aggregation
Solution Approach 2:
The patent introduces a virtual CC unit as an intermediary layer between the physical component carriers and the resource allocation mechanism. This virtual CC unit acts as a mediator that enables consolidated scheduling across multiple component carriers, reducing the complexity of managing individual carrier schedules while preserving the aggregated bandwidth capacity
Data Source
AI summary
A terminal includes: a communication unit configured to perform an uplink or downlink communication by using a frequency band in which aggregation is performed by carrier aggregation; and a control unit configured to, in a case where scheduling is performed in the aggregation-performed frequency band according to a unit including a plurality of component carriers, perform frequency domain resource allocation in accordance with a number of BWPs included in the plurality of component carriers.