COT Length Field Position in Downlink Control Channel
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Solution Overview
Problem
Existing technologies face challenges in efficiently managing channel access and unlicensed carrier systems, particularly in relation to Maximum Channel Occupancy Time (MCOT) structure with multiple downlink and uplink switch points.
Innovation Solution
The proposed solution involves employing advanced radio access network (RAN) architectures and protocol stacks, including next-generation Node B (gNB) and evolved Node B (ng-eNB) nodes, to enable efficient channel access and unlicensed carrier operations. This includes dynamic modulation and coding schemes, multi-beam operations, and bandwidth part (BWP) configurations to optimize channel utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic modulation and coding schemes are employed to optimize channel utilization, then spectral efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies dynamics by implementing dynamic modulation and coding schemes that adapt to changing channel conditions in real-time. The system dynamically adjusts modulation order and coding rate based on feedback information, allowing the communication system to optimize spectral efficiency under varying operational conditions while managing complexity through automated adaptation mechanisms.
Solution Approach 2:
The patent employs parameter changes by varying modulation and coding parameters dynamically. The system changes modulation order (e.g., QPSK, 16-QAM, 64-QAM) and coding rates based on channel quality indicators, enabling efficient spectral utilization across different signal conditions without requiring fixed complex configurations.
2Productivity
If multi-beam operations are implemented to enhance channel access, then spectral efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the communication system into multiple beams, where each beam operates independently with its own signal processing chain. This segmentation allows parallel transmission across multiple spatial directions, improving spectral efficiency while managing complexity through modular beam-level processing units that can be independently configured and controlled.
Solution Approach 2:
The patent implements multi-beam operations by adding a spatial dimension to traditional single-beam communication. The system transitions from one-dimensional signal transmission to multi-dimensional spatial transmission, utilizing multiple beams simultaneously to increase spectral efficiency while the gNB and ng-eNB nodes manage the added complexity through centralized coordination.
3Productivity
If bandwidth part configurations are used to optimize resource allocation, then channel access efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the total bandwidth into multiple bandwidth parts (BWPs), each with its own configuration parameters and resource allocation. This allows the system to allocate resources more efficiently across different service types and quality requirements, improving channel access efficiency while managing complexity through standardized BWP configuration mechanisms.
Solution Approach 2:
The patent implements dynamic BWP configurations that can be adjusted based on current channel conditions and traffic demands. The system dynamically activates or deactivates specific bandwidth parts and modifies their parameters in real-time, enabling flexible resource allocation that optimizes efficiency while the gNB and ng-eNB nodes manage the dynamic configuration complexity.
Data Source
AI summary
A wireless device receives configuration parameters indicating: a plurality of a channel occupancy time (COT) lengths of a cell, and a position parameter for a COT of the cell. The wireless device receives downlink control information (DCI) comprising a plurality of fields. The position parameter indicates a position of a field, of the plurality of fields. The field indicates a COT length, of the plurality of COT lengths. The wireless device transmits a transport block via uplink resources of the COT with the COT length.