PDCCH Link Control via Time Advance and Beam Mode
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Solution Overview
Problem
Current telecommunication networks face challenges in managing downlink channels effectively, leading to increased blocking and discontinuous transmission issues due to variations in modulation coding schemes, particularly in 5G networks.
Innovation Solution
The implementation of a method that uses a time advance and beam mode to control downlink channels by replacing response identifiers with cell identifiers, storing time advances, adapting quality indication offsets, and determining downlink channel indications based on these factors to activate optimal beam modes for user devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam mode is activated based on traditional downlink channel indication (SINR offset and PDSCH CQI), then communication quality is maintained, but blocking increase occurs in downlink channel and discontinuous transmission increases
Solution Approach 1:
The patent changes the parameters used for downlink channel indication from traditional SINR offset and PDSCH CQI to a combination of quality indication offset and time advance group. This parameter substitution allows the system to maintain communication quality while reducing downlink channel blocking and discontinuous transmission issues.
2Reliability
If conservative modulation coding schemes are used, then transmission reliability is improved, but blocking increase in downlink channel occurs
Solution Approach 1:
The patent applies preliminary action by determining downlink channel indication based on time advance group before actual transmission occurs. This allows the system to proactively adjust beam modes and quality indications to prevent blocking issues before they occur, rather than reacting to them after conservative modulation schemes are applied.
3Productivity
If aggressive modulation coding schemes are used, then transmission efficiency is improved, but discontinuous transmission increase occurs
Solution Approach 1:
The patent implements feedback mechanisms by using time advance group information to dynamically adjust downlink channel indication and beam modes. This feedback loop allows the system to monitor transmission conditions and adjust parameters in real-time, maintaining high transmission efficiency while reducing discontinuous transmission issues that occur with aggressive modulation schemes.
Data Source
AI summary
Systems and methods provided for controlling a downlink channel based on a time advance and a beam mode at a cell site. The cell site includes a link management system communicatively coupled to one or more user devices. The link management system is to replace a response identifier with a cell identifier responsive to a move from an idle mode to an active mode, store a time advance and the cell identifier based on a time advance group that corresponds to the one or more user devices, adapt a quality indication offset based on the time advance group, determine a downlink channel indication based on the quality indication offset and the time advance group, and activate a beam mode for communication with the one or more user devices of the time advance group based on the downlink channel indication.