CSI Collision Handling on PUSCH via Dynamic Multiplexing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, there is a need for effective collision handling between channel state information (CSI) reporting and other uplink transmissions on the physical uplink shared channel (PUSCH), as existing technologies face challenges in managing simultaneous transmissions of CSI, data, scheduling requests, buffer status reports, and hybrid automatic repeat request feedback without causing interference.
Innovation Solution
The proposed solution involves determining whether to multiplex or drop CSI and other uplink transmissions in the same slot, prioritizing transmissions based on pre-configured priorities, and encoding rules to ensure efficient allocation of bits for transmission on either the PUSCH or PUCCH, thereby minimizing collisions and optimizing communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CSI reporting and other uplink transmissions are simultaneously transmitted on PUSCH, then communication throughput is improved, but transmission reliability deteriorates due to collisions and interference
Solution Approach 1:
The patent implements dynamic collision handling by allowing the UE to adaptively select between multiplexing and dropping CSI reports based on real-time transmission conditions. The system dynamically adjusts the treatment of CSI transmissions depending on whether uplink data is present and the priority levels of competing transmissions, rather than using a static approach.
Solution Approach 2:
The patent changes the parameter of transmission priority by introducing explicit priority levels for different uplink transmissions. The base station configures priority values for CSI reports and other uplink channels, and the UE uses these priority parameters to make intelligent decisions about which transmissions to maintain and which to drop when collisions occur.
2Measurement precision
If CSI reports are prioritized over other uplink transmissions, then CSI accuracy is improved, but data transmission reliability deteriorates
Solution Approach 1:
The patent uses configurable priority parameters to balance CSI accuracy and data reliability. The base station can adjust the priority value assigned to CSI reports based on network conditions, allowing flexible trade-offs between maintaining accurate channel state information and ensuring reliable data transmission.
Solution Approach 2:
The system dynamically adjusts CSI reporting behavior based on the presence and priority of other uplink transmissions. When high-priority data transmissions are detected, the system adaptively modifies CSI report handling to prevent excessive interference with data reliability.
3Productivity
If multiple uplink transmissions are multiplexed in the same slot, then resource utilization is improved, but interference increases
Solution Approach 1:
The patent implements dynamic multiplexing decisions where the UE evaluates the presence, type, and priority of multiple uplink transmissions before determining whether to multiplex or drop CSI reports. This dynamic approach allows the system to optimize resource utilization while managing interference based on real-time conditions.
Solution Approach 2:
The system uses priority parameters configured by the base station to manage interference levels during multiplexing. By adjusting priority values and using them as decision criteria, the system can control the degree of multiplexing and thereby manage the resulting interference to acceptable levels.
4Reliability
If CSI reporting is dropped to avoid collisions, then transmission reliability is improved, but information loss increases
Solution Approach 1:
The patent uses priority parameters to determine when CSI reports should be dropped versus when they should be multiplexed. By configuring appropriate priority values, the system can minimize unnecessary drops of CSI reports while still maintaining transmission reliability when collisions would be harmful.
Solution Approach 2:
The system dynamically decides whether to drop or multiplex CSI reports based on the specific transmission context, including the presence of other uplink data and their relative priorities. This prevents blanket dropping of CSI reports and allows intelligent retention of important channel state information.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Certain aspects of the present disclosure provide techniques for collision handling for channel state information (CSI) reporting on a physical uplink shared channel (PUSCH). A method for wireless communications by a user equipment (UE) is provided. The method generally includes receiving scheduling for at least one CSI reporting transmission and at least one uplink transmission in a same slot. The UE determines to multiplex the at least one CSI and the at least one uplink transmission in the slot or to drop the at least one CSI or the at least one uplink transmission in the slot. The UE transmits in the slot at least one of: the at least one CSI transmission or the at least one uplink transmission based on the determination.