Sidelink Resource Selection for Mixed Numerology Coexistence
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, the interference caused by mixed numerologies in sidelink NR and LTE communications leads to performance degradation, as different numerologies result in incorrect automatic gain control (AGC) settings, especially when UEs simultaneously engage in sidelink communications using different radio access technologies.
Innovation Solution
Implementing a co-channel coexistence sidelink configuration that allows UEs to identify and select sidelink resources based on whether they overlap with sidelink resources of another network, thereby minimizing interference by adjusting AGC values appropriately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UEs simultaneously engage in sidelink communications using different radio access technologies with mixed numerologies, then communication versatility and resource utilization are improved, but interference increases and performance degrades due to incorrect AGC settings
Solution Approach 1:
The network node performs preliminary configuration by providing the UE with a co-channel coexistence sidelink configuration before the UE engages in sidelink communications. This configuration includes information about sidelink resources of another network and AGC settings, enabling the UE to proactively adjust its transmission parameters to avoid interference with mixed numerologies before the interference occurs
Solution Approach 2:
The invention changes the AGC parameter based on the numerology type being used for sidelink communication. The network node configures the UE with different AGC settings corresponding to different numerologies (e.g., first numerology with first AGC value, second numerology with second AGC value), allowing the UE to adapt transmission power parameters to match the specific numerology being used, thereby preventing interference
2Productivity
If UEs use different numerologies for sidelink communications, then spectral efficiency and service diversity are improved, but interference and AGC setting accuracy deteriorate
Solution Approach 1:
The invention applies different AGC settings locally according to the specific numerology being used. The network node configures the UE with numerology-specific AGC parameters (first AGC value for first numerology, second AGC value for second numerology), ensuring that each sidelink transmission uses the appropriate AGC setting tailored to its numerology, thereby eliminating interference caused by using incorrect AGC settings while maintaining the benefits of mixed numerology operation
3Productivity
If UEs dynamically share sidelink channels across different networks, then resource utilization and network efficiency are improved, but complexity of resource management and coordination increases
Solution Approach 1:
The network node acts as an intermediary that simplifies resource management complexity for the UE. Instead of requiring the UE to independently manage and coordinate resources across multiple networks and numerologies, the network node provides the co-channel coexistence configuration that includes pre-defined sidelink resources of another network and corresponding AGC settings. This intermediary approach enables dynamic resource sharing while keeping the UE's processing complexity manageable
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitting user equipment (UE) (Tx UE) may receive a co-channel coexistence sidelink configuration for identifying and selecting a sidelink resource of a first network based, at least in part, on whether the sidelink resource of the first network occurs during a subframe of a sidelink resource of a second network. The Tx UE may transmit a sidelink message to a receiving UE in accordance with the co-channel coexistence sidelink configuration. Numerous other aspects are described.