Sidelink Beam Management Using CSI-RS Feedback

The patent segments beam management into distinct functional components: CSI-RS resource configuration, beam measurement, beam indication, and beam failure recovery. Each component is handled through separate signaling messages and procedures, allowing the system to implement beam-based transmission while managing complexity through modular design.

The patent applies preliminary action by pre-configuring CSI-RS resources and beam parameters before actual data transmission. The network device prepares beam-related configurations including CSI-RS resource sets, reporting configurations, and beam failure detection parameters in advance, so that when beam-based transmission is activated, the terminal device can immediately use the pre-established beam parameters without real-time complexity.

The patent implements self-service by enabling terminal devices to autonomously perform beam measurement, beam selection, and beam failure detection using pre-configured CSI-RS resources. The terminal device independently measures channel quality on different beams, selects the best beam based on measurement results, and detects beam failures without continuous network intervention, thereby extending coverage while limiting the increase in device complexity through autonomous operation.

The patent uses feedback mechanisms where terminal devices report beam measurement results and beam failure indications to the network device. This feedback loop allows the network to adjust beam configurations and maintain optimal coverage without requiring complex real-time control, as the terminal device continuously monitors and reports beam status enabling adaptive coverage extension.