Sidelink Resource Pool Configuration for Interference Mitigation
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Solution Overview
Problem
In LTE and NR communication systems, terminals with different sidelink resource configurations can experience mutual interference due to differences in uplink and downlink configurations, leading to timing alignment issues and resource reuse conflicts.
Innovation Solution
A resource pool configuration method that allows terminals to obtain a predefined, preconfigured, or configured resource pool, which includes specific time and frequency domain resources, synchronization signals, and transmission parameters, thereby avoiding mutual interference between terminals with different configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the network dynamically changes uplink and downlink configurations in NR, then the system flexibility and adaptability are improved, but the signaling overhead increases and conflicts with preconfigured terminal settings
Solution Approach 1:
The patent preconfigures multiple uplink and downlink configuration sets in the terminal before network connection. When the terminal enters coverage, it can quickly select from preconfigured options without waiting for network signaling, reducing signaling overhead while maintaining flexibility.
Solution Approach 2:
The patent enables dynamic switching between preconfigured configuration sets based on network conditions and signaling. The terminal can adapt its uplink and downlink configurations dynamically by selecting appropriate preconfigured sets, achieving flexibility without continuous reconfiguration signaling.
2Device complexity
If the terminal uses preconfigured uplink and downlink configurations, then the device complexity is reduced, but conflicts arise with network-configured settings causing resource interference
Solution Approach 1:
The patent preconfigures multiple uplink and downlink configuration sets in the terminal before network connection. When the terminal enters coverage, it can quickly select from preconfigured options without waiting for network signaling, reducing signaling overhead while maintaining flexibility.
Solution Approach 2:
The patent implements a feedback mechanism where the terminal reports its selected configuration set to the network. The network can then provide feedback to adjust or confirm the configuration, ensuring consistency between terminal and network settings while maintaining low complexity.
3Productivity
If different terminal configurations use the same sidelink resource pool, then resource utilization efficiency is improved, but mutual interference occurs due to timing alignment differences
Solution Approach 1:
The patent applies different timing advance values and synchronization parameters to different terminal configuration groups within the same resource pool. This allows terminals with different uplink/downlink configurations to coexist in the same resource pool without interference, as each group uses locally optimized timing parameters.
Solution Approach 2:
The patent segments the terminal population into different configuration groups based on their uplink and downlink settings. Each group is assigned specific timing parameters and synchronization signals, allowing simultaneous operation in the same resource pool without mutual interference.
Data Source
AI summary
The present disclosure provide a resource pool configuration method, a resource pool using method, a configuration device, and a terminal. The resource pool obtaining method is applied to a terminal, including: obtaining a first resource pool in at least one of the following manners: obtaining the predefined first resource pool; obtaining the preconfigured first resource pool; and obtaining the configured first resource pool.