Adaptive Timing Advance Signaling in Wireless Nodes
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Solution Overview
Problem
Existing wireless communication protocols struggle to adaptively indicate timing advance in the protocol layer below the RRC sublayer, limiting their ability to efficiently manage timing advance for multiple Transmit/Receive Points and other scenarios.
Innovation Solution
A method and device for wireless communications that utilize signaling with indication and target fields at the protocol layer below the RRC sublayer to self-adaptively indicate timing advance, allowing for flexible configuration and operation in various scenarios such as multi-TRP/m-TRP, V2X, and IAB communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing signaling formats at protocol layer below RRC sublayer are used, then the signaling structure is simple and fixed, but the adaptability to indicate multiple timing advances is insufficient
Solution Approach 1:
The patent introduces dynamic indication fields in the signaling format that can adaptively indicate whether target fields contain timing advance information. This allows the signaling structure to dynamically adjust its interpretation based on the state of indication fields, enabling flexible indication of multiple timing advances without requiring multiple fixed signaling formats.
Solution Approach 2:
The patent changes the parameters of the existing signaling format by adding indication fields that control the interpretation of target fields. By modifying the signaling parameters to include these control fields, the system can adaptively indicate timing advance information for multiple candidate cells using the same signaling structure, rather than requiring different signaling formats for different scenarios.
2Adaptability or versatility
If multiple signaling formats are introduced to support multiple timing advances, then the adaptability improves, but the signaling complexity and cost increase
Solution Approach 1:
The patent makes the existing signaling format universal by adding indication fields that enable it to handle multiple timing advance scenarios. The same signaling format can now indicate timing advance for one candidate cell or multiple candidate cells depending on the state of the indication fields, eliminating the need for multiple specialized signaling formats.
Solution Approach 2:
The patent segments the signaling structure into indication fields and target fields, where indication fields control the interpretation of target fields. This segmentation allows the system to use a single unified signaling format that can be flexibly interpreted to support multiple timing advances, rather than requiring multiple separate signaling formats.
3Adaptability or versatility
If existing single timing advance signaling is used, then the signaling structure is simple, but it cannot support multi-TRP/m-TRP and LTM scenarios
Solution Approach 1:
The patent adds a new dimension to the signaling structure by introducing indication fields that provide an additional layer of information. This dimensional addition allows the signaling to convey timing advance information for multiple candidate cells within the same signaling format, enabling support for multi-TRP and LTM scenarios without losing timing advance information.
Data Source
AI summary
The present application discloses a method and a device in a communication node for wireless communications. The communication node receives a first signaling, the first signaling comprising at least one indication field and at least one target field; the first signaling is a signaling at a protocol layer below RRC sublayer; each indication field of the at least one indication field indicates whether a corresponding target field is used for a Timing Advance (TA). The present application proposes to enable the first signaling to adaptively indicate the timing advance by through of the at least one indication field, avoiding the introduction of multiple signaling formats and reducing the impact on the standard.