Slot Format Indication for IAB Case 7 Timing
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Solution Overview
Problem
The deployment of new timing schemes, such as Case 7 timing, in wireless communication systems introduces new timing scenarios that require innovative solutions to support simultaneous uplink and downlink communications in integrated access and backhaul (IAB) architectures.
Innovation Solution
The method involves receiving signals indicating whether symbols at the beginning or end of sequences of symbols are reserved or to be reserved, and performing uplink transmissions or downlink receptions accordingly, thereby facilitating slot format indication in wireless communication systems under Case 7 timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Case 7 timing scheme is deployed to enable simultaneous reception and transmission in IAB nodes, then communication efficiency is improved, but system complexity increases due to multiple new timing scenarios
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting timing parameters (K1, K2, K3 values) based on different timing scenarios. The network can configure different K1, K2, K3 parameter sets for different IAB node capabilities and traffic patterns, allowing the system to optimize communication efficiency while managing complexity through parameterization rather than hard-coded complex logic
Solution Approach 2:
The patent implements dynamics by enabling flexible and dynamic timing adjustments in IAB nodes. The timing behavior can be dynamically changed based on network conditions, node capabilities, and traffic requirements. The system supports dynamic switching between different timing scenarios (Scenario 1, 2, 3) and allows dynamic configuration of slot format indicators, making the system adaptable rather than static
2Adaptability or versatility
If new timing scenarios are supported to enable simultaneous uplink and downlink communications, then network adaptability is improved, but implementation difficulty increases
Solution Approach 1:
The patent applies universality by designing a multi-functional timing framework that can handle multiple timing scenarios (Scenario 1 for sequential operations, Scenario 2 for simultaneous reception, Scenario 3 for simultaneous transmission) using a unified set of K1, K2, K3 parameters. The same basic mechanism and signaling procedures are used across all scenarios, reducing implementation complexity while maintaining high adaptability to different network configurations and IAB node capabilities
Solution Approach 2:
The patent segments the timing control into distinct configurable parameters (K1 for scheduling offset, K2 for HARQ timing, K3 for slot format indication timing) that can be independently adjusted for each timing scenario. This segmentation allows the complex timing behavior to be broken down into manageable, independently controllable components, making implementation easier while maintaining versatility
Data Source
AI summary
Embodiment of the present application is directed to a method and apparatus for slot format indication. According to an embodiment of the present application, the method includes receiving at least one signal indicating one of: whether at least one symbol at a beginning of a sequence of consecutive symbols transmitted or received over a communication link is reserved or is to be reserved, and whether at least one symbol at an end of the sequence of consecutive symbols transmitted or received over the communication link is reserved or is to be reserved. The at least one uplink transmission is performed based on the received signal in response to the communication link being associated with an uplink transmission. The at least one downlink reception is performed based on the received signal in response to the communication link being associated with downlink reception.


