Sidelink Beam Sweeping Start Point Configuration for Wireless Terminals
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Solution Overview
Problem
In wireless communication systems, there is a need for a method that allows user equipment (UE) supporting sidelink to configure a beam sweeping start point for new data transmission and reception, considering current data transmission and reception conditions, to improve communication quality and flexibility.
Innovation Solution
A method where a first UE receives a request message for initial beam search from a second UE, determines whether to discontinue its current data transmission based on priority and latency requirements, and configures the beam sweeping start point accordingly, including information about the start point and pattern for beam sweeping, which can be performed on different antenna panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam sweeping is performed for new data transmission, then communication quality and link reliability are improved, but current data transmission may be interrupted causing latency increase
Solution Approach 1:
The patent changes the parameter of beam sweeping start point configuration by introducing multiple possible start points (current subframe, next available subframe, or subframe after current data transmission ends) and selecting among them based on data priority and transmission conditions, thereby resolving the contradiction between performing beam sweeping for reliability and maintaining current data transmission to avoid latency
Solution Approach 2:
The patent makes the beam sweeping start point dynamic rather than fixed, allowing it to be adjusted based on the priority of current data transmission and the importance of new data transmission. The system dynamically selects whether to use the current subframe, next available subframe, or subframe after current transmission as the beam sweeping start point, balancing reliability improvement with latency minimization
2Adaptability or versatility
If beam sweeping start point is configured flexibly based on current data transmission conditions, then adaptability and communication quality are improved, but system complexity increases
Solution Approach 1:
The patent segments the beam sweeping start point configuration into distinct cases based on data priority levels. It divides the decision-making process into separate scenarios: high priority current data transmission (use next available subframe or after current transmission), normal priority (use current subframe), and low priority (use after current transmission). This segmentation simplifies the overall complexity by providing clear rules for each scenario rather than requiring complex continuous optimization
Solution Approach 2:
The patent applies preliminary action by pre-defining multiple beam sweeping start point options (current subframe, next available subframe, subframe after current data transmission) and their selection criteria before actual beam sweeping occurs. The UE and gNB prepare and agree on the start point configuration in advance based on predetermined priority levels and transmission conditions, reducing the need for complex real-time decisions during beam sweeping execution
Data Source
AI summary
Disclosed is a method for performing beam sweeping by a first terminal supporting sidelink in a wireless communication system. Specifically, the method may comprise the steps of: receiving, from a second terminal, a request message for an initial beam search; transmitting, to the second terminal, a response message including information on a start point of beam sweeping; and performing the beam sweeping for the second terminal on the basis of the start point of the beam sweeping.