Reference Signal Allocation Across SBFD and Non-SBFD Symbols
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently utilizing resource allocations for reference signals, particularly when both full duplex and non-full duplex symbols are included in a single slot, leading to potential interference and reduced communication reliability.
Innovation Solution
Implementing a resource allocation for reference signals that includes both sub-band full duplex (SBFD) and non-SBFD symbols within a single slot, with specific configurations such as gap symbols, code-division multiplexing, and port associations to manage these symbols effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If both SBFD and non-SBFD symbols are included in a single slot for reference signal resource allocation, then resource utilization efficiency is improved, but interference between full duplex and non-full duplex communications increases
Solution Approach 1:
The patent segments the slot into different symbol types (SBFD symbols and non-SBFD symbols) with distinct functionalities. Reference signals are specifically allocated to non-SBFD symbols to avoid interference, while data transmissions utilize SBFD symbols. This segmentation allows simultaneous full-duplex and half-duplex operations within the same slot without mutual interference.
Solution Approach 2:
The patent applies local quality by assigning different communication modes to different time resources within the slot. Non-SBFD symbols are designated with high-quality requirements for reference signal transmissions (requiring no self-interference), while SBFD symbols are optimized for data transmission with full-duplex capabilities. This localized optimization ensures each symbol type serves its intended purpose effectively.
2Adaptability or versatility
If reference signals are transmitted in SBFD symbols, then resource allocation flexibility is improved, but communication reliability deteriorates due to self-interference
Solution Approach 1:
The patent extracts reference signal transmissions from SBFD symbols and relocates them to non-SBFD symbols. This extraction eliminates the self-interference problem that would otherwise affect reference signal quality in full-duplex mode. The reference signals are now transmitted in a dedicated interference-free environment while data transmissions occupy the flexible SBFD resources.
Solution Approach 2:
The patent introduces dynamic resource allocation where the network can flexibly configure which symbols are SBFD and which are non-SBFD based on traffic conditions and interference levels. This dynamic adjustment allows the system to optimize between flexibility and reliability depending on current operational requirements, rather than using a static configuration.
3Reliability
If gap symbols are inserted between SBFD and non-SBFD symbols to manage interference, then communication reliability is improved, but time resource efficiency decreases
Solution Approach 1:
The patent maintains continuous useful action by ensuring that every symbol in the slot is assigned a productive function. Non-SBFD symbols continuously carry reference signals without interruption, while SBFD symbols continuously handle data transmissions. The transition between these modes is seamless and requires no guard periods, eliminating wasted time while maintaining reliable communication through proper symbol-type assignment.
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 resource allocation for a reference signal, wherein the resource allocation for the reference signal comprises a sub-band full duplex (SBFD) symbol and a non-SBFD symbol that are within a single slot. The UE may communicate with a network node in accordance with the resource allocation. Numerous other aspects are described.