Uplink Transmission Guard Band Resource Utilization
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Solution Overview
Problem
In 5G communications systems operating in unlicensed bands, the existing interlaced resource block design fails to utilize the guard band effectively, leading to low transmission resource utilization due to exclusion of the guard band physical resource block (PRB), which is not available in 4G systems.
Innovation Solution
The proposed solution involves using the guard band PRB as part of the interlaced resource blocks and determining PRBs for data transmission based on clear channel detection results, allowing the guard band to be utilized for data transmission, thereby increasing resource utilization in unlicensed bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the guard band is excluded from interlaced resource block design, then transmission reliability is maintained, but transmission resource utilization deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation by allowing the guard band to be conditionally used for data transmission based on clear channel detection results. The system dynamically adjusts whether the guard band PRB is included in data transmission resources, transitioning from a static exclusion approach to a flexible dynamic approach that adapts to channel conditions.
Solution Approach 2:
The patent changes the parameter of resource block availability by introducing clear channel detection results as a condition. When the detection result indicates the channel is clear, the guard band PRB parameter changes from unavailable to available for data transmission, effectively utilizing previously wasted resources.
2Object-affected harmful factors
If the guard band is excluded from resource block design, then interference between adjacent channels is avoided, but resource utilization deteriorates
Solution Approach 1:
The patent introduces clear channel detection as a feedback mechanism that monitors channel conditions before allowing data transmission in the guard band. This feedback loop ensures that the guard band is only used when the channel is clear, preventing interference while enabling resource utilization.
Solution Approach 2:
The clear channel detection result acts as an intermediary that mediates between the need to avoid interference and the desire to utilize resources. It provides the condition under which the guard band can safely be used, bridging the contradiction between interference avoidance and resource utilization.
Data Source
AI summary
This disclosure provides an uplink transmission method, user equipment, and a network-side device. The uplink transmission method applied to user equipment includes: receiving a scheduling instruction transmitted by a network-side device, where the scheduling instruction includes a set of interlace indices of resource blocks and a scheduled bandwidth, and an interlace of resource blocks in the scheduled bandwidth indicated by the set of interlace indices of resource blocks includes a guard band physical resource block PRB; performing clear channel detection for the scheduled bandwidth; determining a PRB for data transmission in the interlace of resource blocks based on a detection result of the clear channel detection; and transmitting data by using the PRB for data transmission.