Measurement Signal Timing Synchronization for Wireless Interference
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Solution Overview
Problem
In wireless communications systems, existing duplex modes, such as TDD and FDD, fail to efficiently meet the varying service volume requirements of different network-side devices, leading to inaccuracies in uplink channel quality and interference measurements due to the use of a single timing for sending measurement signals.
Innovation Solution
The method involves sending measurement signals using different timings for uplink and downlink transmissions, allowing terminal devices to synchronize with receiving devices and improve measurement accuracy by using the downlink receiving timing for sending measurement signals, thereby reducing latency and enhancing precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single uplink sending timing is used for measurement signals, then the system maintains simple timing configuration, but measurement accuracy deteriorates due to inability to synchronize with receiving device
Solution Approach 1:
The patent applies local quality by configuring different timing offsets for different measurement signal purposes. Specifically, the first timing offset is used for measurement signals intended for another terminal device, while the second timing offset is used for measurement signals intended for the network device. This localized differentiation of timing parameters enables precise synchronization with the receiving device without requiring complete reconfiguration of the entire timing system.
Solution Approach 2:
The patent implements dynamics by making the timing offset adjustable and purpose-specific rather than fixed and uniform. The network device can dynamically assign different timing offsets based on the measurement purpose and receiving device requirements. This dynamic timing configuration allows the system to adapt timing parameters to specific measurement scenarios, improving accuracy without permanently increasing system complexity.
2Measurement precision
If measurement signals are sent using downlink receiving timing, then synchronization with receiving device is improved, but latency increases due to timing alignment requirements
Solution Approach 1:
The patent applies parameter changes by adjusting the timing offset parameter based on the measurement signal's destination and purpose. By changing the timing offset parameter dynamically, the system can optimize the balance between synchronization accuracy and latency. The network device configures appropriate timing offsets that account for propagation delays and processing times, ensuring synchronization without excessive latency.
3Measurement precision
If different timings are used for different measurement signals, then measurement accuracy for specific purposes is improved, but device complexity increases due to multiple timing configurations
Solution Approach 1:
The patent applies segmentation by dividing measurement signals into different categories based on their destination and purpose. The first timing offset is specifically for measurement signals intended for another terminal device, while the second timing offset is for signals intended for the network device. This segmentation allows each timing configuration to be optimized for its specific purpose without requiring complex management of a single unified timing system.
Data Source
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AI summary
This application provides a measurement signal sending method, an indication information sending method, and a device, to help a receive end correctly receive a measurement signal and improve measurement accuracy. The method includes: determining, by a first terminal device, a first timing of a first measurement signal used by a second terminal device for measurement, where a first network device serving the first terminal device is different from a network device serving the second terminal device; determining, by the first terminal device, a second timing of a second measurement signal used by the first network device for measurement; and sending, by the first terminal device, the first measurement signal and the second measurement signal based on the first timing and the second timing respectively.