Sidelink Slot Format Coordination to Reduce Terminal Interference
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Solution Overview
Problem
In wireless networks, direct communication between terminal devices (sidelink) results in varying slot formats among devices, leading to reduced data reception success rates due to interference.
Innovation Solution
A terminal device determines its slot format based on the slot formats of other devices to minimize interference, using specific configurations for transmission and reception to enhance success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal devices use different slot formats for direct communication, then communication flexibility is improved, but data reception success rate deteriorates due to interference
Solution Approach 1:
The patent applies local quality by allowing different terminal devices to use different slot formats in different spatial locations or communication scenarios. Each device can select a slot format suitable for its specific communication needs while the system coordinates to avoid conflicts, thereby maintaining communication flexibility while improving reception success rate through localized optimization rather than uniform configuration
Solution Approach 2:
The patent implements dynamics by enabling terminal devices to dynamically select and switch between different slot formats based on real-time communication conditions, channel state, and interference levels. This dynamic adaptation allows the system to maintain flexibility while improving reliability through context-aware format selection that avoids interference in each specific transmission scenario
2Productivity
If all symbols in a slot are used for transmission, then transmission efficiency is improved, but reception reliability deteriorates due to lack of dedicated reception symbols
Solution Approach 1:
The patent applies segmentation by dividing the slot structure into distinct transmission symbols and reception symbols. Instead of using all symbols for transmission, the slot is segmented to include dedicated reception symbols, allowing simultaneous transmission and reception operations to occur in different symbol periods, thereby maintaining transmission efficiency while improving reception reliability through structured time-division multiplexing
Solution Approach 2:
The patent implements periodic action by establishing a regular pattern of transmission symbols followed by reception symbols within each slot. This periodic structure creates predictable time intervals for transmission and reception activities, allowing the system to maintain high transmission efficiency during transmission phases while ensuring reliable reception during dedicated reception phases, with the pattern repeating consistently across multiple slots
Data Source
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AI summary
This application provides a transmission resource determining method and apparatus. A first terminal device obtains a slot format corresponding to at least one other device in a first slot, where the slot format includes a first slot format and/or a second slot format; symbols used for sending information and receiving information in the first slot format are inconsistent with those in the second slot format. The first terminal device determines, based on the slot format corresponding to the at least one other terminal device in the first slot, a slot format corresponding to the first terminal device in the first slot. Therefore, terminal devices do not affect each other when transmitting data and/or feedback information, thereby improving a success rate of transmitting data and/or feedback information between the terminal devices. This may be applied to an Internet of Vehicles, for example, V2X, LTE-V, and V2V