Uplink Resource Configuration in Shared Spectrum Bands
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Solution Overview
Problem
Current wireless communication systems face challenges in configuring uplink transmissions in shared radio frequency spectrum bands, particularly when the minimum bandwidth occupancy requirement is not necessary or does not exist, limiting flexibility in resource allocation and efficiency.
Innovation Solution
The techniques described allow for flexible configuration of resources for uplink transmissions by identifying sets of frequency resource interlaces and segments, enabling different allocation strategies such as contiguous blocks or narrow bands, and incorporating listen before talk (LBT) procedures for access to the shared spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resources are configured to satisfy minimum bandwidth occupancy requirement in shared radio frequency spectrum band, then data transmission capacity is improved, but resource allocation flexibility is reduced
Solution Approach 1:
The patent divides the shared radio frequency spectrum band into multiple frequency resource interlaces, which are further divided into frequency resource interlace segments. This segmentation allows the system to allocate resources in flexible configurations (contiguous blocks, narrow bands, or distributed patterns) while maintaining sufficient overall bandwidth occupancy for capacity requirements.
Solution Approach 2:
The patent enables dynamic resource configuration where the bandwidth occupancy requirement can be adapted based on service type, channel conditions, and traffic demand. The system can switch between satisfying minimum bandwidth occupancy requirements and using alternative allocation strategies (contiguous or narrow band) depending on the specific scenario, providing adaptability while maintaining productivity when needed.
2Adaptability or versatility
If resources are allocated as contiguous blocks or narrow bands, then resource allocation flexibility is improved, but bandwidth occupancy may not meet minimum requirements
Solution Approach 1:
By segmenting the spectrum into frequency resource interlaces and segments, the system can allocate resources as contiguous blocks or narrow bands within the segmented structure, achieving flexibility while the overall segmented allocation across multiple interlaces maintains sufficient bandwidth occupancy for capacity requirements.
3Reliability
If listen before talk procedures are implemented for access to shared spectrum, then coexistence with other systems is improved, but access time and complexity increase
Solution Approach 1:
The patent implements listen before talk (LBT) procedures as a preliminary action before uplink transmissions in the shared radio frequency spectrum band. By performing channel sensing and contention resolution in advance, the system ensures reliable coexistence with other wireless systems (such as Wi-Fi) while managing access time through structured contention mechanisms and priority-based scheduling.
Data Source
AI summary
Techniques are described for wireless communication. One method includes identifying a first set of resources for a first uplink transmission. The first set of resources is based on a first set of frequency resource interlaces and a first set of frequency resource interlace segments. Each frequency resource interlace segment of the first set of frequency resource interlace segments includes a portion of resources of the frequency resource interlaces of the first set of frequency resource interlaces. The method also includes communicating on an uplink using the first set of resources.