5G Node Channel Perception for Interference Reduction
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Solution Overview
Problem
The existing 5G mobile networks face issues with DL-to-UL interference and resource collisions due to dynamic frame structure changes and scheduling-free data transmission methods, particularly in scenarios with high service loads and numerous wireless terminals, leading to performance degradation.
Innovation Solution
A data processing method involving perception measurement by nodes before data transmission, where nodes determine a pre-determined duration for measurement, adjust sending power based on channel energy thresholds, and either reschedule or use random backoff to minimize interference and resource collisions by optimizing channel usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If each cell dynamically changes frame structure or uplink and downlink configurations according to service loads, then service adaptability is improved, but interference between neighboring cells increases
Solution Approach 1:
The patent applies preliminary action by performing perception measurements on channels before data transmission occurs. Nodes measure channel energy levels in advance during a pre-determined duration, identify potential interference from neighboring cells, and adjust transmission parameters proactively. This prevents interference issues rather than reacting to them after they occur, resolving the contradiction between dynamic adaptability and interference generation.
2Loss of time
If scheduling-free data transmission method is used, then signaling overhead is reduced and access delay is shortened, but resource collision between terminals increases
Solution Approach 1:
The patent implements feedback by having nodes perform perception measurements to detect channel occupancy and energy levels before transmitting data. This feedback mechanism allows terminals to sense whether resources are already occupied by other transmissions, enabling them to adjust their transmission timing or power accordingly. This resolves the contradiction by maintaining the speed benefits of scheduling-free access while adding collision avoidance through environmental sensing feedback.
3Productivity
If terminals randomly select resources for direct data transmission, then access efficiency is improved, but resource collision especially in mass connections increases
Solution Approach 1:
The patent applies preliminary action by requiring terminals to perform perception measurements on target channels before transmitting data. During this pre-determined measurement duration, terminals detect channel energy levels and determine whether the channel is occupied. This preliminary sensing action allows terminals to make informed resource selection decisions, maintaining access efficiency while significantly reducing random collisions in mass connection scenarios.
Data Source
AI summary
Provided are a data processing method, node and terminal. The method includes: before sending data, a first node performing a perception measurement on a first channel of transmission data within a pre-determined time duration; the first node acquiring a first perception measurement result of the perception measurement; and the first node processing data according to the first perception measurement result. By means of the embodiments of the present application, the problems in the relevant art of an interference between uplink and downlink data transmissions of a neighbor cell or a present cell, and a resource collision can be solved.