SBFD PUSCH/PUCCH Availability Under TRS, PDCCH, and SSB Collisions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in handling sub-band full duplex (SBFD) collisions, particularly with tracking reference signals (TRS), physical downlink control channel (PDCCH) monitoring occasions, and synchronization signal blocks (SSB), leading to inefficient resource utilization and excessive processing requirements.
Innovation Solution
Implementing semi-static PUSCH or PUCCH configurations that allow selective transmission or reception based on the availability of transmission occasions, considering collisions with TRS, PDCCH MO, or SSB, to avoid counting unavailable slots and conserve UE resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If semi-static PUSCH or PUCCH configuration is implemented with collision detection, then resource utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The network node pre-configures the UE with semi-static PUSCH or PUCCH configurations including collision detection rules before transmission. The UE proactively identifies unavailable slots by checking for collisions with TRS, PDCCH MO, or SSB based on pre-provided parameters, avoiding the need for complex real-time analysis during transmission decisions
Solution Approach 2:
The UE autonomously determines transmission availability by self-evaluating whether scheduled transmission occasions collide with downlink signals. The device applies pre-configured collision detection parameters to independently identify unavailable slots and adjust transmissions without requiring complex network coordination or additional signaling overhead
2Reliability
If transmission occasions are made unavailable due to collisions with TRS, PDCCH MO, or SSB, then signal interference is reduced, but transmission coverage is degraded
Solution Approach 1:
The system applies collision avoidance selectively only to specific transmission occasions that collide with critical downlink signals (TRS, PDCCH MO, SSB), while leaving non-colliding transmission occasions available. This localized approach ensures high signal quality for received downlink signals while maintaining transmission coverage through alternative available slots
Solution Approach 2:
The network dynamically adjusts transmission parameters including time domain resource allocation, frequency domain resource allocation, and repetition K1/K2 values based on collision detection results. When collisions are detected, the system modifies transmission timing or frequency resources to avoid interference, thereby maintaining both signal quality and transmission coverage
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 semi-static physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) configuration. The UE may selectively transmit, in accordance with the semi-static PUSCH or PUCCH configuration, a PUSCH communication or a PUCCH communication in a PUSCH transmission occasion or a PUCCH transmission occasion of a sub-band full duplex (SBFD) slot based at least in part on an availability of the PUSCH transmission occasion or the PUCCH transmission occasion. The PUSCH transmission occasion or the PUCCH transmission occasion may be unavailable when the PUSCH transmission occasion or the PUCCH transmission occasion at least partially collides with a tracking reference signal (TRS), a physical downlink control channel (PDCCH) monitoring occasion (MO) or search space (SS), or a synchronization signal block (SSB). Numerous other aspects are described.