Subband Full-Duplex Carrier Aggregation for Intra-Band Interference Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing intra-band carrier aggregation for subband full-duplex operations, particularly in handling simultaneous downlink and uplink communications within the same frequency band, which can lead to interference and reduced spectral efficiency.
Innovation Solution
Implementing intra-band carrier aggregation based subband full-duplex (SBFD) operations by configuring time and frequency information for multiple component carriers, including downlink and uplink subbands, to enable simultaneous transmission and reception within the same frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous downlink and uplink communications are performed within the same frequency band, then spectral efficiency is improved, but interference between transmissions and receptions increases
Solution Approach 1:
The frequency band is segmented into multiple subbands, with specific subbands allocated for downlink and uplink transmissions. This segmentation allows simultaneous full-duplex operations in different subbands while reducing interference within each subband, thereby improving spectral efficiency without excessive interference.
Solution Approach 2:
Different quality characteristics are applied to different subbands based on channel conditions and interference levels. Some subbands are optimized for downlink with specific modulation and coding schemes, while others are optimized for uplink, allowing each subband to operate at optimal performance levels.
2Productivity
If multiple component carriers are configured for intra-band carrier aggregation, then network capacity is improved, but device complexity increases
Solution Approach 1:
The configuration framework is designed to be universal and multi-functional, supporting both full-duplex and half-duplex operations, as well as various carrier aggregation scenarios. This allows the same configuration mechanisms to handle multiple component carriers with different duplex modes, reducing overall system complexity while maintaining high network capacity.
Solution Approach 2:
The system dynamically configures and reconfigures component carriers based on traffic demands and channel conditions. Carriers can be dynamically switched between full-duplex and half-duplex modes, and subband allocations can be adjusted in real-time, allowing the network to optimize capacity while managing device complexity through adaptive rather than static configurations.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration associated with an intra-band carrier aggregation based subband full-duplex (SBFD) operation, the configuration indicating time information and frequency information that are associated with each of a plurality of component carriers, the plurality of component carriers including at least one downlink component carrier associated with a downlink subband and at least one uplink component carrier associated with an uplink subband different from the downlink component carrier associated with the downlink subband. The UE may perform a communication in an SBFD slot or symbol that is based at least in part on the configuration. Numerous other aspects are described.