Beam-Aware LCP Routing Under Beam Failure in Sidelink MAC
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies and power consumption issues due to beam failure during logical channel prioritization (LCP) in beam-based communication, leading to communication delays and MAC PDU generation failures.
Innovation Solution
A method and device for performing wireless communication that includes detecting beam failure and excluding destinations with failed beams during logical channel prioritization (LCP) to ensure efficient sidelink data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If beam-based communication is used to achieve high data rates and low latency, then communication performance is improved, but beam failure occurs leading to MAC PDU generation failures and communication delays
Solution Approach 1:
The patent applies preliminary action by detecting beam failure before MAC PDU generation occurs. The device identifies beam failure conditions in advance and prevents attempting data transmission through failed beams, thereby avoiding transmission failures and delays. This proactive detection and prevention mechanism ensures that communication resources are not wasted on failed beams while maintaining high data rates through successful beams.
2Reliability
If beam failure detection and exclusion mechanisms are implemented during LCP, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the beam management process into distinct functional components: beam failure detection module, destination exclusion module, and MAC PDU generation module. The beam failure detection identifies failed beams independently, the destination exclusion module separately filters out destinations associated with failed beams, and the MAC PDU generation proceeds with remaining valid destinations. This modular segmentation reduces overall system complexity while maintaining high communication reliability.
3Reliability
If destinations associated with failed beams are excluded during LCP, then MAC PDU generation failures are prevented, but data transmission efficiency may be reduced due to excluding potentially recoverable beams
Solution Approach 1:
The patent applies feedback mechanisms by continuously monitoring beam status and dynamically adjusting destination inclusion/exclusion in the LCP process. When beam failure is detected, the system provides feedback to exclude destinations associated with failed beams from MAC PDU generation. This feedback loop ensures high MAC PDU generation success rates while maintaining data transmission efficiency through adaptive resource allocation to successful beams.
Data Source
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AI summary
A method for performing wireless communication by a first device, and a device for supporting same are provided. The method may comprise the steps of: obtaining configuration information related to at least one beam; detecting a beam failure related to a first beam among the at least one beam; and obtaining a medium access control (MAC) protocol data unit (PDU) on the basis of logical channel prioritization (LCP). For example, the MAC PDU may be obtained on the basis of at least one destination except for a destination related to the first beam in which the beam failure has been detected.