Sidelink Timing Advance for Repeater Synchronization
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Solution Overview
Problem
Existing wireless communication systems face challenges in aligning sidelink timing for repeaters, which can impact resource utilization and synchronization reliability in wireless communications systems.
Innovation Solution
A framework is provided for determining a sidelink timing offset for repeaters to align sidelink communications between UEs, considering synchronization relationships and network switching gaps, allowing for improved synchronization and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a repeater repeats sidelink messages between UEs without timing alignment, then resource utilization increases, but synchronization reliability deteriorates
Solution Approach 1:
The repeater determines the sidelink timing offset before repeating the sidelink message, using preliminary timing information from the first UE and second UE. This preliminary timing alignment ensures that the repeated message is transmitted at the correct time, maintaining synchronization reliability while enabling resource utilization improvement through efficient repeater operation.
Solution Approach 2:
The system uses timing offset determination based on communication timing from both UEs to create a feedback mechanism for synchronization. The repeater adjusts its repeated transmission timing based on the timing offset calculated from receiving timing of the first UE and transmission timing to the second UE, ensuring synchronization reliability is maintained while improving resource utilization.
2Reliability
If the repeater aligns sidelink timing between UEs, then synchronization reliability improves, but device complexity increases
Solution Approach 1:
The repeater performs self-service by autonomously determining the sidelink timing offset using timing information from the UEs themselves. The repeater uses the reception timing from the first UE and transmission timing to the second UE to calculate the offset, without requiring complex external synchronization infrastructure, thus improving synchronization reliability while limiting complexity increase.
Solution Approach 2:
The system changes the timing parameter by determining a specific sidelink timing offset value based on communication timing measurements. This parameter adjustment allows the repeater to align transmissions properly for improved synchronization reliability while using a straightforward timing offset calculation approach that avoids excessive complexity.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A first device may identify first sidelink communication timing of a first UE and a second sidelink communication timing of a second UE. The first UE and the second UE may be in communication with the first device. The first device may determine a sidelink timing offset to be used by the first device in repeating a sidelink message between the first UE and the second UE. The first device may determine the sidelink timing offset based at on the first sidelink communication timing and the second sidelink communication timing. The first device may repeat the sidelink message between the first UE and the second UE in accordance with the sidelink timing offset.