Sidelink Beam Pairing with Preconfigured Feedback for Low-Latency 5G
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 3GPP 5G networks require improved solutions for sidelink beam management, particularly in initial beam pairing and beam failure recovery, as existing methods for synchronization and feedback are not applicable due to processing latency and resource constraints in sidelink communication.
Innovation Solution
A user equipment (UE) is configured to obtain and transmit sidelink beam pairing reference signals (sl-BP-RS) and receive feedback (sl-BP-FB) based on configuration information, using sidelink beam pairing blocks (S-BPB) to identify optimal beam pairs for communication, with configurations including duration, offset, and association patterns for beam pairing periods and feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing synchronization and feedback methods are used in sidelink communication, then network throughput and coverage can be maintained, but processing latency increases and resource constraints are not adequately addressed
Solution Approach 1:
The patent applies preliminary action by pre-configuring beam pairing parameters, resource allocations, and feedback mechanisms before sidelink communication begins. The network pre-estimates and assigns beam pairs and their associated resources, so that when communication starts, UEs can immediately use pre-determined beam configurations without requiring real-time synchronization and feedback processing, thereby reducing processing latency while maintaining reliability
Solution Approach 2:
The patent extracts the synchronization and feedback functions from the traditional beam management procedure and replaces them with pre-configured beam pairing parameters. By taking out the real-time synchronization requirement and substituting it with pre-determined beam pairs and associated resource allocations, the system eliminates processing latency while maintaining beam management reliability
2Reliability
If traditional beam management procedures are implemented, then network coverage can be maintained, but device complexity and resource consumption increase
Solution Approach 1:
The patent applies self-service by enabling UEs to autonomously select and use pre-configured beam pairs without requiring complex real-time beam management procedures. Each UE independently utilizes the pre-assigned beam pairing parameters and resource allocations, eliminating the need for complex inter-UE coordination and feedback mechanisms, thereby reducing device complexity while maintaining communication reliability
Solution Approach 2:
The patent applies universality by designing a beam pairing framework where pre-configured parameters serve multiple functions: beam identification, resource allocation, and communication protocol coordination. This multi-functional approach consolidates what would otherwise require separate complex procedures into a unified pre-configuration scheme, reducing overall device complexity while maintaining reliability
3Measurement precision
If real-time beam feedback is implemented, then beam accuracy can be improved, but network resource consumption and processing overhead increase
Solution Approach 1:
The patent applies periodic action by implementing beam feedback at predetermined intervals rather than in real-time. UEs transmit beam pairing feedback using pre-configured resources at specific periodic moments, which maintains sufficient beam pairing accuracy for sidelink communication while significantly reducing network resource consumption compared to continuous real-time feedback mechanisms
Solution Approach 2:
The patent applies partial action by implementing beam feedback only when necessary according to pre-configured conditions, rather than continuously. This selective feedback approach maintains adequate beam pairing accuracy for reliable communication while minimizing network resource consumption by avoiding excessive feedback transmissions
Data Source
AI summary
Embodiments of the present disclosure relate to methods and apparatuses for sidelink (SL) beam management. According to an embodiment of the present disclosure, a user equipment (UE) can include: a processor configured to: obtain configuration information for beam pairing based on configuration or pre-configuration, wherein the configuration information includes at least one of: a configuration for sidelink beam pairing block (S-BPB); a configuration for sidelink beam pairing reference signal (sl-BP-RS); a configuration for sidelink beam pairing feedback (sl-BP-FB); or association pattern (s) between occasions for sl-BP-RS and sl-BP-FB; and determine resource (s) for transmitting sl-BP-RS (s) based on the obtained configuration information in response to the UE becoming a UE for transmitting sl-BP-RS (s); a transmitter coupled to the processor and configured to: transmit the sl-BP-RS (s) on the determined resource (s); and a receiver coupled to the processor and configured to: receive sl-BP-FB (s) based on the obtained configuration information and the sl-BP-RS (s); wherein the processor is further configured to identify beam (s) of the UE based on the sl-BP-FB (s).