Wireless Node Beam Update Signaling for Transmission Consistency
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Solution Overview
Problem
In wireless communication systems, particularly in New Radio (NR) R15 and R16, there is a challenge in determining whether to transmit radio signals based on beam updates for control and data channels, which affects consistency between the transmitting and receiving ends, and existing methods do not effectively address this for various scenarios like cellular networks and Vehicle-to-Everything (V2X).
Innovation Solution
A method involving physical-layer signaling is used to indicate beam updates, where a first signaling indicates a time-frequency resource block, and a second signaling determines whether to transmit a signal based on a condition related to a target reference signal resource, ensuring consistency and quality of communication by using a reference signal resource set to determine the precoder for the signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If physical-layer signaling is used to update beams for control channel and data channel, then beam management efficiency is improved, but consistency between transmitting end and receiving end becomes difficult to maintain
Solution Approach 1:
The patent introduces a feedback mechanism where the receiving end sends back indication information about whether to transmit the first signal based on the beam update status. This feedback loop ensures that both ends are synchronized and consistent in their transmission decisions, resolving the reliability issue while maintaining beam management efficiency
Solution Approach 2:
The patent performs preliminary actions by having the first node determine the spatial-domain relation of the first signal based on the first target reference signal resource before actual transmission. This preliminary determination ensures that both ends are prepared with consistent beam information, preventing transmission inconsistencies
2Reliability
If separate beam management mechanisms are adopted for control channel and data channel, then channel-specific optimization is achieved, but system complexity increases
Solution Approach 1:
The patent merges the beam management mechanisms for control channel and data channel by using a unified physical-layer signaling approach. The same signaling mechanism (second signaling) is used to update beams for both channels, reducing system complexity while maintaining channel-specific optimization through the reference signal resource set
Solution Approach 2:
The patent creates a universal beam management solution where the physical-layer signaling mechanism serves multiple purposes: updating beams for control channel, updating beams for data channel, and determining transmission consistency. This multi-functional approach reduces overall system complexity
Data Source
AI summary
The present application discloses a method and a device in a node for wireless communications. A first node receives a second signaling and operates a first reference signal resource set; receives a first signaling, the first signaling being used for indicating a first time-frequency resource block; and transmits a first signal in the first time-frequency resource block when a first condition is satisfied; or, drops transmitting the first signal in the first time-frequency resource block when the first condition is unsatisfied. The first signaling is used for indicating a first index group; the first index group is used to determine a first reference signal resource from the first reference signal resource set; the first reference signal resource is used to determine a precoder of the first signal; the second signaling is used for indicating a first target reference signal resource.