Network Controlled Repeater Timing Synchronization
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately determining transmission and reception timings, especially when network-controlled repeaters are used to amplify and forward signals between wireless devices and base stations, leading to inefficiencies and degraded performance.
Innovation Solution
The implementation of enhanced processes and technologies within wireless devices and network-controlled repeaters to improve timing determination and signal management, including the use of side control information for beamforming, timing alignment, and TDD configuration, to optimize transmission and reception processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If network-controlled repeaters are used to amplify and forward signals, then coverage and signal strength are improved, but timing determination accuracy deteriorates
Solution Approach 1:
The network-controlled repeater acts as an intermediary device that receives signals from the base station, amplifies them, and forwards them to wireless devices. The repeater is controlled by the base station to maintain timing synchronization, thus extending coverage while preserving timing accuracy through coordinated control.
Solution Approach 2:
The system implements feedback mechanisms where the base station receives timing information from wireless devices and adjusts the repeater's operation accordingly. This feedback loop enables the base station to compensate for timing deviations introduced by the repeater, maintaining accurate timing determination despite the extended coverage.
2Power
If repeaters amplify signals, then signal strength is improved, but noise amplification increases
Solution Approach 1:
The base station receives feedback information from wireless devices about signal quality and noise levels. Based on this feedback, the base station dynamically adjusts the repeater's amplification gain to amplify desired signals while minimizing noise amplification, optimizing the signal-to-noise ratio in extended coverage areas.
Solution Approach 2:
The repeater's amplification characteristics are made dynamic rather than fixed. The base station controls the repeater to adjust amplification levels based on varying channel conditions, ensuring optimal signal strength while adapting to prevent excessive noise amplification in different operating scenarios.
3Measurement precision
If timing advance is used for uplink synchronization, then transmission timing is improved, but round trip time increases
Solution Approach 1:
The system performs preliminary timing adjustment by calculating and applying timing advance values before actual uplink transmissions occur. The base station determines the required timing advance based on the distance to the wireless device and applies it in advance, ensuring synchronized uplink transmissions without requiring additional round trip time for timing corrections.
Data Source
AI summary
A network controlled repeater (NCR) may transmit a capability IE associated with an internal delay of a first function of the NCR. The NCR may receive, in downlink receiving timing, a signal or a channel. The NCR may transmit, in a downlink transmitting timing, the signal or the channel. At least one of the downlink transmitting timing and the downlink receiving timing may be based on the internal delay.