Cell DTX DRX Negotiation for Inter-Cell Interference
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Solution Overview
Problem
Current communication networks face challenges in coordinating cell Discontinuous Transmission (DTX) and Discontinuous Reception (DRX) patterns between neighboring nodes, leading to inter-cell interference and conflicts, which affect energy efficiency and network performance.
Innovation Solution
A method for negotiating cell DTX and DRX patterns between NG-RAN nodes using coordination parameters such as pattern orthogonality, density, and power characteristics over Xn and F1 interfaces, allowing nodes to adjust their patterns to minimize conflicts and optimize energy savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If cell DTX/DRX patterns are activated to save energy during non-active times, then energy efficiency is improved, but inter-cell interference and conflicts increase
Solution Approach 1:
The patent applies preliminary action by having NG-RAN nodes exchange coordination information about their intended DTX/DRX patterns before actually activating them. This allows nodes to proactively identify and resolve potential conflicts before they cause interference, enabling energy saving operations to proceed without harmful inter-cell interference effects
Solution Approach 2:
The patent implements feedback mechanisms where NG-RAN nodes monitor and report DTX/DRX pattern usage and interference conditions to neighboring nodes. This feedback loop allows the network to dynamically adjust patterns to maintain energy efficiency while preventing interference, as nodes can respond to reported conditions by modifying their transmission/reception behavior
2Object-affected harmful factors
If DTX/DRX patterns are coordinated between neighboring nodes to reduce interference, then inter-cell interference is reduced, but device complexity increases
Solution Approach 1:
The patent applies universality by utilizing existing standardization interfaces and messaging protocols for DTX/DRX coordination. Rather than creating dedicated coordination mechanisms, the solution leverages multi-functional existing infrastructure to handle pattern exchange and conflict resolution, thereby reducing the complexity burden on individual nodes while achieving interference reduction
Solution Approach 2:
The patent introduces an intermediary coordination mechanism where nodes exchange pattern information through standardized interfaces acting as mediators. This intermediary layer handles the complex coordination logic centrally, allowing individual nodes to maintain simpler local implementations while still achieving coordinated interference reduction across the network
Data Source
AI summary
A method comprising, receiving at a first access network element or function serving at least one first radio cell, information about at least one second cell discontinuous transmission, DTX, and/or discontinuous reception, DRX, pattern used by a second access network element or function; based on the received information, determining a conflict with at least one first cell DTX and/or DRX pattern used by the first access network element or function; providing coordination parameters comprising at least one of a pattern density parameter, a preference parameter indicating a preference with respect to a usage of at least one cell DTX and/or DRX pattern, or a characteristics parameter indicating a power and/or antenna characteristics; and receiving updated information in relation to an update of the at least one second cell DTX and/or DRX pattern.