SSB Configuration Adaptation for PUSCH Overlap Reduction
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently adapting uplink transmissions based on synchronization signal block (SSB) configurations, leading to energy inefficiencies and potential communication disruptions due to overlapping SSB and PUSCH occasions.
Innovation Solution
The system adapts SSB transmission periodicity and uplink communication resources by modifying SSB configurations through network indications, allowing UEs to transmit UCI indicating valid PUSCH occasions, thereby optimizing energy usage and reducing communication conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SSB transmission is performed in all time periods according to original configuration, then synchronization coverage is maintained, but energy consumption increases and uplink transmission opportunities are lost due to overlapping PUSCH occasions
Solution Approach 1:
The system dynamically adapts SSB transmission by receiving indications from the network entity that specify modified SSB configurations for different time periods. The UE adjusts its SSB transmission behavior based on these dynamic indications, transitioning from static original configuration to adaptive transmission that responds to changing network conditions and traffic requirements.
Solution Approach 2:
The network entity sends indications that modify SSB configuration parameters (such as time period assignments, frequency resources, or transmission power) for specific time periods. The UE applies these parameter changes to adapt its SSB transmission, allowing optimization of energy consumption while maintaining synchronization where needed.
2Loss of energy
If SSB configuration is modified in first subset of time periods, then energy efficiency improves, but uplink transmission reliability may be affected in second subset of time periods
Solution Approach 1:
The time periods are segmented into a first subset and a second subset with different SSB configuration approaches. In the first subset, modified SSB configurations are applied to improve energy efficiency. In the second subset, the original or different configurations are maintained to ensure uplink transmission reliability. This segmentation allows the system to optimize for different objectives in different time periods.
Solution Approach 2:
The system dynamically switches between different SSB configuration modes depending on the time period subset. The UE receives indications specifying which subset applies at each time period and adapts its transmission behavior accordingly, enabling flexible trade-offs between energy efficiency and reliability based on current network conditions.
3Productivity
If UE transmits UCI indicating valid PUSCH occasions, then resource utilization optimizes, but communication complexity increases
Solution Approach 1:
The UE transmits UCI (Uplink Control Information) that provides feedback to the network entity about which PUSCH occasions are valid for uplink transmission. This feedback mechanism enables the network to optimize resource allocation and scheduling decisions based on actual UE capabilities and conditions, improving overall resource utilization while distributing the complexity management between UE and network.
Data Source
AI summary
Aspects described herein relate to a user equipment (UE) receiving, from a network entity, an indication to modify a synchronization signal block (SSB) configuration in a first subset of a set of time periods, and transmitting, for the network entity and based on the indication, uplink control information (UCI) indicating whether the UE is to transmit uplink communications in a second subset of the set of time periods. Other aspects relate to the network entity transmitting the indication and receiving the UCI.