IAB Node Multiple Timings for Dense NR Backhaul Links
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting flexible and high-efficiency communication in integrated access and backhaul links (IAB) due to the need for more dense network deployments, especially with the introduction of new radio access technologies like NR, which require improved mobile broadband, massive machine type communications, and ultrareliable and low latency communications.
Innovation Solution
A communication method for IAB nodes that sets multiple timings to optimize communication efficiency, particularly in NR systems, by utilizing hybrid beamforming and setting up specific transmission and reception timings to enhance coverage and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single timing is used for IAB node communication, then the system complexity is low, but communication flexibility and efficiency are insufficient
Solution Approach 1:
The patent segments the timing configuration into multiple distinct timing parameters (first timing, second timing, third timing) that can be independently configured for different communication functions. This allows each timing parameter to be optimized separately for specific purposes such as backhaul transmission, access transmission, or switching operations, thereby improving communication flexibility without creating an unmanageably complex single timing mechanism
Solution Approach 2:
The patent implements dynamic timing selection where the IAB node can switch between different timing configurations based on communication requirements. The node dynamically selects which timing parameter to use for specific transmission or reception operations, enabling adaptive optimization of communication efficiency while maintaining manageable system complexity through structured timing options
2Productivity
If multiple timings are set for IAB node communication, then communication efficiency and flexibility improve, but device complexity increases
Solution Approach 1:
The patent divides timing management into segmented, function-specific timing parameters where each timing (first, second, third timing) serves a specific communication function. This segmentation allows efficient optimization of each timing parameter for its dedicated purpose while keeping the overall complexity manageable through clear functional separation and structured configuration
Solution Approach 2:
The patent applies local quality by optimizing specific timing parameters for specific communication scenarios. Each timing parameter is configured with locally optimal values suited for its particular function (e.g., backhaul transmission timing optimized for wireless backhaul, access timing optimized for user access), thereby improving overall communication efficiency without requiring uniform complex timing management across all functions
3Area of stationary object
If dense network deployment is implemented, then network coverage and capacity improve, but latency increases due to multiple hops
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple timing parameters in advance for different communication scenarios. The IAB node has timing parameters ready before communication occurs, allowing it to immediately use optimal timing values for specific operations without calculation delays. This pre-prepared timing configuration reduces latency in dense multi-hop networks while maintaining extended network coverage
Solution Approach 2:
The patent implements dynamic timing adjustment where the IAB node can quickly switch between different timing configurations based on current communication requirements. This dynamic capability allows the node to optimize timing for each specific transmission or reception operation, reducing latency variability in dense networks while maintaining the network coverage benefits of multiple IAB nodes
Data Source
AI summary
Proposed is a signal transmission method performed in a wireless communication system by an integrated access and backhaul (IAB) node, the method being characterized by comprising: receiving first information about a first timing and second information about a second timing; and transmitting a first signal and a second signal to a parent node of the IAB node, wherein the first signal is transmitted on a first resource, and the second signal is transmitted on a second resource. The first resource is a time resource to which the first timing is applied, and the second resource is a time resource to which the second timing is applied.