Dynamic SBFD Resource Format Switching in 5G UE
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently managing resources for dynamic subband full duplex (SBFD) operations, which are essential for enhancing system capacity, resource utilization, and spectrum efficiency.
Innovation Solution
The implementation of a method that allows user equipment (UE) to dynamically adjust and switch between different resource formats in support of dynamic SBFD operations, involving the transmission of capability indications, semi-static configurations, and SBFD indications between the UE and network entities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If semi-static SBFD configuration is used, then resource allocation is simplified and signaling overhead is reduced, but resource utilization flexibility and adaptability to dynamic network conditions deteriorate
Solution Approach 1:
The patent introduces dynamic SBFD indication signaling that enables real-time switching between first format (e.g., uplink-only) and second format (e.g., downlink-only) resource allocations. This dynamic mechanism allows the system to adapt resource formats based on current network conditions while maintaining a semi-static baseline configuration, thus resolving the contradiction between configuration simplicity and adaptability.
2Productivity
If dynamic SBFD operations are implemented, then resource utilization and spectrum efficiency are improved, but signaling overhead and transition management complexity increase
Solution Approach 1:
The patent applies partial action by implementing dynamic SBFD indications only for specific resource formats that require flexibility, while maintaining semi-static configuration for other resources. This selective dynamic approach improves resource utilization where needed without incurring excessive signaling overhead for all resources, thus resolving the contradiction between efficiency and overhead.
3Adaptability or versatility
If real-time resource format transitions are enabled, then system capacity and adaptability are enhanced, but transition reliability and resource wastage during switching become concerns
Solution Approach 1:
The patent implements preliminary action by providing advance notification through SBFD indications before resource format transitions occur. This allows user equipment to prepare for upcoming format changes (e.g., switching from uplink to downlink format), ensuring reliable transitions and minimizing resource wastage during switching by pre-coordinating the change timing and parameters.
Data Source
AI summary
A method for wireless communication at a user equipment (UE) and related apparatus are provided. In the method, the UE transmits, to a network entity, a capability indication of a capability for a dynamic SBFD operation for the UE, receives, from the network entity, a semi-static SBFD configuration allocating one or more resources for communication with the network entity, and receives, from the network entity based on the capability for the dynamic SBFD operation, an SBFD indication for a transition from a first format of the one or more resources to a second format of the one or more resources. The first format is different from the second format. The UE further communicates with the network entity based on the second format of the one or more resources.