SBFD Pattern Granularity for Consistent Sub-Carrier Spacing
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Solution Overview
Problem
Existing wireless communication systems face challenges in determining the sub-band full-duplex (SBFD) pattern and granularity, leading to uncertainties in sub-carrier spacing (SCS) consistency across time and frequency domains, which affects communication efficiency and increases missed communications.
Innovation Solution
The implementation of SBFD pattern indications that specify time and frequency domain granularities for SBFD resources, enabling clear communication protocols through dynamic or semi-static signaling, allowing UEs and network nodes to determine consistent SCS across domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sub-band full-duplex communications are implemented without proper granularity determination, then communication capacity is improved, but communication reliability deteriorates due to missed communications
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting time domain granularity and frequency domain granularity based on SBFD pattern indications. The system changes the granularity parameters (time granularity, frequency granularity) according to different SBFD patterns to optimize both communication capacity and reliability, resolving the contradiction between improved productivity and maintained reliability
2Device complexity
If fixed granularity is used for SBFD resources, then device complexity is reduced, but adaptability deteriorates leading to inefficiencies
Solution Approach 1:
The patent implements dynamics by transitioning from fixed granularity to dynamic granularity determination. The network node provides SBFD pattern indications that enable the UE to dynamically identify appropriate time and frequency domain granularities based on current communication conditions, thereby improving adaptability while maintaining manageable device complexity through standardized identification procedures
3Loss of information
If semi-static signaling is used for SBFD pattern indication, then signaling overhead is reduced, but responsiveness to changing conditions deteriorates
Solution Approach 1:
The patent applies periodic action by implementing semi-static SBFD pattern indications that are updated at predetermined intervals or under specific triggering conditions. This periodic updating mechanism balances signaling overhead reduction with adequate responsiveness, allowing the system to adapt to changing conditions at optimal intervals rather than continuously or never
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 sub-band full-duplex (SBFD) pattern indication that indicates an SBFD pattern for an SBFD resource. The UE may identify a time domain granularity and a frequency domain granularity for the SBFD resource based at least in part on the SBFD pattern indication. The UE may communicate via the SBFD resource in accordance with the time domain granularity and the frequency domain granularity. Numerous other aspects are described.