BWP Allocation for 5G NR V2X Tailing Interference
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Solution Overview
Problem
In 5G NR V2X communication, the existing FDM mode experiences performance degradation due to tailing signal interference between sub-carriers with different Numerology configurations, which affects high node density and low-latency requirements.
Innovation Solution
A method for BWP allocation that determines a BWP difference value between nodes with different Numerologies and allocates BWPs based on reliability requirements and resource availability, using coding gain and guard intervals to mitigate interference, allowing for simultaneous data transmissions in the FDM mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If FDM mode is used for data transmission in 5G NR V2X communication, then high node density and business volume requirements are met, but tailing signal interference occurs between sub-carriers with different Numerology configurations causing performance degradation
Solution Approach 1:
The patent applies local quality by configuring different BWP sizes for different nodes based on their specific Numerology settings. Each node receives a BWP size that is locally optimized for its configuration, allowing FDM transmission while managing interference through customized local parameters rather than uniform global settings.
Solution Approach 2:
The patent changes the BWP size parameter dynamically based on the Numerology configuration of each node. By adjusting this key parameter according to the node's specific settings (SCS, CP), the system enables FDM mode operation while controlling tailing signal interference through parameter adaptation rather than fixed configurations.
2Adaptability or versatility
If different Numerology configurations are used for FDM data transmission, then system flexibility and adaptability are improved, but mutual interference is caused among different frequency domain resources
Solution Approach 1:
The system assigns different BWP sizes to different nodes according to their specific Numerology configurations. This local customization allows each node to operate with its preferred Numerology while the overall system maintains coordination through the gNodeB, enabling flexibility without excessive interference.
Solution Approach 2:
The gNodeB acts as an intermediary that coordinates between nodes with different Numerology configurations. It determines appropriate BWP sizes for each node and manages the frequency domain resources, serving as a mediator that enables diverse Numerologies to coexist while controlling interference through centralized coordination.
3Productivity
If BWP size is increased to accommodate more nodes in FDM mode, then system capacity is improved, but interference between adjacent BWPs increases
Solution Approach 1:
The patent dynamically adjusts the BWP size parameter for each node based on its Numerology configuration and the overall system state. This flexible parameter change allows the system to optimize capacity while controlling interference by tailoring BWP sizes to actual needs rather than using fixed large allocations.
Solution Approach 2:
The BWP size is configured dynamically rather than statically. The gNodeB determines appropriate BWP sizes based on real-time conditions including node requirements and available resources, allowing the system to adapt to changing conditions and optimize the balance between capacity and interference management.
Data Source
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AI summary
A method and device for BWP allocation are discloses. First, difference information between a first node and a second node is determined; then, whether an allocation condition is satisfied is determined according to the difference information and the reliability requirement of a service corresponding to a BWP needing to be allocated to the first node, and if the allocation condition is satisfied, the BWP is allocated to the first node in a time unit corresponding to the second node; and at this time, the second node can resist trailing signal interference by means of a coding gain, etc..