5G Signal Puncturing for LTE Control Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge lies in enabling the coexistence of 5G and LTE communication systems that share the same frequency and time resources without causing interference, particularly in managing overlapping transmission bands to maintain effective signal transmission and reception.
Innovation Solution
A method is introduced where the location of control signals in the LTE system is confirmed, and the 5G system punctures its signals at these locations to avoid interference, allowing for simultaneous transmission and reception using the same frequency and time resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the 5G system transmits signals in overlapping frequency and time resources with the LTE system, then spectrum utilization efficiency is improved, but interference between the two systems occurs
Solution Approach 1:
The base station performs preliminary identification of LTE control signal locations before transmitting 5G signals. By pre-determining which resource elements contain LTE control signals (PDCCH, PCFICH, PHICH), the system can proactively puncture 5G data signals at these locations, preventing interference before it occurs and enabling safe spectrum sharing
Solution Approach 2:
The patent extracts and removes 5G signal components that would interfere with LTE control signals. By identifying resource elements allocated to LTE control signals and excluding them from 5G signal transmission (through puncturing), the system separates the two systems' resource usage in critical areas while maintaining overall spectrum sharing
2Reliability
If the 5G system punctures signals at LTE control signal locations, then interference with LTE is minimized, but 5G signal transmission completeness is reduced
Solution Approach 1:
The system dynamically changes the transmission parameters of the 5G signal based on LTE control signal locations. By adjusting which resource elements are allocated to 5G data transmission versus which are punctured for LTE control signals, the system optimizes the balance between protecting LTE reliability and maintaining 5G data throughput
Solution Approach 2:
The patent applies partial puncturing only where necessary (at LTE control signal locations) rather than completely eliminating 5G signal transmission. This selective approach removes only the interfering portions of the 5G signal while preserving the majority of 5G data transmission capacity
Data Source
AI summary
The present disclosure relates to a 5G or a pre-5G communication system for supporting a higher data rate beyond 4G communication systems such as LTE. A signal transmitting method of an apparatus according to an embodiment of the present disclosure may include: confirming a location of a control signal for a first communication system when a transmission band of the first communication system and a transmission band of a second communication system overlap each other; puncturing a signal for the second communication system at the confirmed location of the control signal for the first communication system; and transmitting the punctured signal for the second communication system.