Subcarrier-Level Resource Avoidance in 5G LTE Overlap
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Solution Overview
Problem
In wireless communication systems, especially in 5G networks, there is a challenge in managing overlapping frequency domain resources between different communication systems, such as NR and LTE, which can lead to transmission conflicts and interference.
Innovation Solution
The method involves determining the overlapped frequency domain resources at a subcarrier level and avoiding uplink transmissions and/or monitoring downlink transmissions on these resources. This is achieved by obtaining information about the overlapped resources and using configuration information to determine the specific resources to avoid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If frequency domain resources are shared between multiple communication systems, then spectrum utilization is improved, but transmission conflicts and interference increase
Solution Approach 1:
The patent segments the frequency domain resources at the subcarrier level, allowing different communication systems to share overlapping frequency resources without interference. By identifying and separating subcarriers that would cause conflicts, the system enables multiple systems to coexist on the same frequency spectrum while maintaining transmission reliability.
Solution Approach 2:
The patent introduces configuration information as an intermediary mechanism that coordinates between different communication systems. This configuration information includes indicators that specify which subcarriers should be avoided for transmission, acting as a mediator that prevents conflicts while allowing spectrum sharing.
2Reliability
If subcarrier-level resource management is implemented, then transmission reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by determining overlapping frequency domain resources in advance before transmission occurs. The system identifies which subcarriers would cause conflicts and prepares configuration information indicating these avoided subcarriers, allowing reliable transmission without real-time complex decision-making during the actual communication process.
Solution Approach 2:
The patent changes the parameter of resource management granularity from traditional block-level allocation to subcarrier-level allocation. This parameter change enables more precise control over frequency resources, improving transmission reliability by avoiding conflicts at the finest granular level while using standardized configuration information to manage the increased complexity.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a method performed by an electronic device in a first system in a wireless communication system, wherein the first system and a second system exist in the wireless communication system, and frequency domain resources used by the first system and the second system at least partially overlap with each other. The includes: obtaining information about overlapped frequency domain resources; determining the overlapped frequency domain resources, the determined overlapped frequency domain resources comprising overlapped frequency domain resources at a subcarrier level; and avoiding performing an uplink transmission and/or avoiding monitoring a downlink transmission on the determined overlapped frequency domain resources.