IAB Node Multiplexing Switching for 5G Backhaul
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing 5G mobile communication systems face challenges in efficiently supporting multiplexing of integrated access and backhaul (IAB) nodes, particularly in switching between frequency division multiplexing (FDM), spatial division multiplexing (SDM), and time division multiplexing (TDM) schemes to mitigate half-duplex constraints and ensure stable data transmission and reception.
Innovation Solution
The implementation of a method and apparatus for an IAB node that receives multiplexing configuration information to switch between FDM, SDM, and TDM, allowing for flexible multiplexing schemes to optimize data transmission and reception, including the use of transceivers and processors to manage multiplexing operations based on configuration information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If FDM or SDM multiplexing schemes are used in IAB nodes, then data transmission efficiency is improved, but system complexity and stability deteriorate due to half-duplex constraints
Solution Approach 1:
The patent implements dynamic switching between FDM, SDM, and TDM multiplexing schemes based on real-time system conditions and configuration information. The IAB node can adaptively select the most appropriate multiplexing mode to balance transmission efficiency with half-duplex constraints, rather than being locked into a single static scheme.
Solution Approach 2:
The system changes operational parameters by switching between different multiplexing schemes (FDM, SDM, TDM) based on received configuration information from the parent node. This allows the IAB node to adjust its multiplexing approach according to varying network conditions, traffic requirements, and half-duplex limitations.
2Adaptability or versatility
If multiplexing schemes are dynamically switched in IAB nodes, then adaptability is improved, but system reliability deteriorates due to switching instability
Solution Approach 1:
The parent IAB node or network controller pre-determines and sends configuration information to child IAB nodes regarding which multiplexing schemes are supported and under what conditions they should be used. This preliminary configuration ensures that switching between schemes is controlled and predictable, maintaining system reliability while enabling adaptability.
Solution Approach 2:
The system uses feedback mechanisms where child IAB nodes report their multiplexing capabilities and operational status to parent nodes, which then provide appropriate configuration information. This closed-loop control ensures that multiplexing scheme switching occurs only when appropriate, balancing adaptability with transmission stability.
3Productivity
If FDM multiplexing is used in IAB nodes, then resource utilization is improved, but frequency interference increases
Solution Approach 1:
The system dynamically switches between FDM and other multiplexing schemes (SDM, TDM) based on received configuration information and real-time conditions. When frequency interference becomes problematic, the system can transition to alternative schemes, thereby maintaining resource utilization while avoiding harmful frequency interference.
4Productivity
If SDM multiplexing is used in IAB nodes, then spatial resource efficiency is improved, but spatial separation requirements increase system complexity
Solution Approach 1:
The IAB node dynamically selects between SDM and other multiplexing schemes based on configuration information from the parent node. When spatial separation requirements become too complex or cannot be met, the system can switch to FDM or TDM approaches, maintaining spatial resource efficiency where possible while avoiding excessive complexity.
Data Source
AI summary
The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data transmission rate. A method performed by an integrated access and backhaul (IAB) node in a wireless communication system is provided. The method includes receiving multiplexing related configuration information of a mobile termination (MT) of the IAB node and a distributed unit (DU) of the IAB node from an upper IAB node, the multiplexing including spatial division multiplexing (SDM), frequency division multiplexing (FDM), and time division multiplexing (TDM), performing fallback from the FDM or the SDM to the TDM, and in response to the fallback, based on the configuration information, transmitting and receiving data of the DU of the IAB node.