Uplink Resource Segmentation for Shared Spectrum Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, the existing techniques face challenges in efficiently multiplexing uplink channels in shared radio frequency spectrum bands, particularly due to constraints like maximum transmission time and alignment issues with ON/OFF periods, leading to dropped subframes and reduced network efficiency.
Innovation Solution
The approach involves segmenting uplink resources into multiple sets, each with associated uplink control channel resources, allowing the base station or user equipment to select the appropriate set based on the location of uplink control channel resources relative to other allocated resources, thereby minimizing dropped transmissions and enhancing scheduling flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink resources are configured in a shared radio frequency spectrum band with fixed ON/OFF periods, then transmission timing is standardized and compliant with communication protocols, but transmission efficiency decreases due to dropped subframes when control channel resources do not align with data channel resources
Solution Approach 1:
The patent segments uplink resources into multiple sets (first set and second set), where each set contains both uplink data channel resources and uplink control channel resources. This segmentation allows the system to independently select resource sets based on alignment requirements, thereby preventing dropped subframes while maintaining compliance with ON/OFF period constraints. The segmentation resolves the contradiction by creating modular resource units that can be flexibly selected without compromising either reliability or efficiency.
Solution Approach 2:
The patent introduces dynamic selection between different uplink resource sets based on the alignment of control channel resources with data channel resources. The base station or UE dynamically determines which resource set to use by evaluating whether the control channel resources are properly aligned within the uplink transmission duration. This dynamic adaptation allows the system to maintain high efficiency when alignment is achieved while ensuring reliability when alignment issues arise, thus resolving the contradiction between standardized timing and transmission efficiency.
2Device complexity
If uplink control channel resources are positioned at fixed locations relative to uplink data channel resources, then scheduling is simplified and standardized, but flexibility decreases leading to dropped transmissions when alignment with ON/OFF periods cannot be achieved
Solution Approach 1:
By segmenting uplink resources into multiple configurable sets, the patent maintains simple scheduling within each set while providing flexibility across sets. Each resource set internally maintains standardized relationships between control and data channels, preserving scheduling simplicity. Meanwhile, the ability to select between different sets provides the flexibility needed to avoid dropped transmissions, thus resolving the contradiction between scheduling simplicity and transmission reliability.
Solution Approach 2:
The patent changes the parameter of resource set configuration, allowing different time resource allocations between control and data channels across different sets. By adjusting these time resource parameters, the system can find configurations that align with ON/OFF periods while maintaining standardized scheduling within each set. This parameter adjustment resolves the contradiction by providing multiple valid configurations rather than a single rigid structure.
3Adaptability or versatility
If multiple sets of uplink resources are configured with different control channel resource locations, then flexibility and alignment capability improve, but device complexity increases due to additional configuration and selection requirements
Solution Approach 1:
The patent segments the resource configuration into multiple sets, where each set contains standardized internal relationships between control and data channels. This segmentation provides flexibility at the set selection level while maintaining simplicity within each set. The segmentation approach resolves the contradiction by isolating complexity to the selection mechanism rather than requiring complex configurations within each resource structure.
Solution Approach 2:
The base station performs preliminary configuration of multiple uplink resource sets with different control channel resource locations before actual transmissions occur. This preliminary action prepares multiple pre-valid configurations that can be directly selected based on alignment requirements, avoiding the need for complex real-time calculations. The preliminary configuration resolves the contradiction by moving complexity from the transmission phase to the setup phase, where it can be managed more efficiently.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Methods, systems, and devices for wireless communications are described for multiplexing of uplink channels in a shared radio frequency spectrum band. Techniques may provide for segmenting uplink resources into multiple different sets of uplink resources, each set of uplink resources having one or more associated uplink control channel resources. A base station or user equipment (UE) may select a set of uplink resources from the multiple sets of uplink resources for uplink transmissions from the UE based on a location of the uplink control channel resources of the set of uplink resources relative to other allocated uplink resources of the UE. Uplink control information (UCI) may be multiplexed with one or more uplink shared channel transmissions of a UE for transmission to a base station in certain circumstances.