IAB Node Beam Preference Determination for Multiplexing Mode
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beams for integrated access and backhaul (IAB) nodes, particularly in supporting multiple operation modes such as half-duplex and full-duplex modes, which affects coverage extension and capacity increase.
Innovation Solution
The proposed method involves identifying beam preference information for mobile terminal (MT) component carriers operating in multiplexing mode within IAB nodes. This information includes suitable and non-suitable beams for multiplexing, determined based on factors like interference degree, frequency band relations, and spatial positions. This information is then transmitted to upper or lower nodes for beam-based communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IAB nodes support multiple operation modes (half-duplex and full-duplex), then the system versatility is improved, but the beam management complexity increases because preferred beams differ for each mode
Solution Approach 1:
The patent segments the beam management process by separating beam preference determination for different operation modes. The IAB node identifies MT CCs operating in multiplexing mode and determines beam preference information specifically for these modes, allowing tailored beam selection for half-duplex and full-duplex operations without managing all possible beam configurations uniformly.
Solution Approach 2:
The patent implements dynamic beam preference determination where the IAB node assesses interference degree, frequency band relationships, and spatial positions to dynamically select appropriate beams for multiplexing mode operation. This dynamic adjustment allows the system to adapt beam preferences based on real-time operational conditions rather than using static pre-configured beams.
2Reliability
If beam preference information is determined based on interference degree and spatial position, then communication quality is improved, but the processing time and computational complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-determining beam preference information based on interference degree, frequency band relationships, and spatial positions before actual communication occurs. The IAB node identifies and evaluates beam suitability in advance, storing this preference information for rapid retrieval and application during multiplexing mode operations, thereby reducing real-time processing requirements.
3Reliability
If IAB nodes perform comprehensive beam management for all MT CCs, then communication reliability is improved, but the system overhead and signaling complexity increase
Solution Approach 1:
The patent extracts and focuses beam management efforts specifically on MT CCs operating in multiplexing mode, rather than uniformly managing all MT CCs. By identifying which component carriers require multiplexing mode beam management and applying specialized beam preference determination only to those, the system reduces overall overhead while maintaining reliability for critical communications.
Data Source
AI summary
An operation method of a first device may comprise: identifying a first MT CC operating in a multiplexing mode among one or more MT CCs formed by an IAB-MT constituting the first device; determining first beam preference information for the first MT CC; transmitting, to a second device which is an upper node of the first device, the first beam preference information; and performing beam-based communications with the second device based on the first beam preference information.