Sidelink Resource Scheduling for Beam Failure Recovery
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Solution Overview
Problem
Current wireless communication systems face challenges in maintaining effective sidelink communication when beam failure occurs between a device and a base station, leading to degraded performance and potential loss of scheduling capabilities.
Innovation Solution
A method where a first device is configured with a network scheduling mode for sidelink communication by a base station, utilizing a dedicated signaling to set up a first set of resources with a specific time pattern for transmission. If beam failure is detected, the device switches to using these resources for sidelink transmission to another device, ensuring continuous communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device uses network scheduling mode for sidelink communication, then the scheduling control and resource allocation are improved, but the communication reliability deteriorates when beam failure occurs between the device and base station
Solution Approach 1:
The device is pre-configured with a first set of resources with a first time pattern for sidelink transmission before beam failure occurs. These resources are reserved and prepared in advance through dedicated signaling from the base station, so that when beam failure is detected, the device can immediately switch to using these pre-configured resources without interruption, thus maintaining communication reliability while preserving the benefits of network-scheduled resource allocation.
2Reliability
If the device switches to autonomous resource selection when beam failure is detected, then the communication continuity is improved, but the device complexity increases
Solution Approach 1:
Instead of requiring complex real-time autonomous resource selection algorithms, the base station performs the resource selection action in advance and configures the first set of resources with a first time pattern to the device through dedicated signaling. When beam failure occurs, the device simply follows the pre-determined time pattern to use the pre-assigned resources, which maintains communication continuity while significantly reducing the computational complexity and processing burden on the device.
3Stability of the object's composition
If the device continues using the first set of resources after beam failure detection, then the communication stability is improved, but the resource allocation efficiency may deteriorate
Solution Approach 1:
The system implements a dynamic resource allocation mechanism where the device is initially configured with a first set of resources and first time pattern for stable communication. When beam failure is detected and recovered, the device can transition back to network-scheduled resource allocation mode, allowing the system to adapt between stability-oriented and efficiency-oriented resource usage based on the actual communication conditions, thus balancing both communication stability and resource allocation efficiency.
Data Source
AI summary
A method and apparatus are disclosed from the perspective of a first device for performing sidelink communication. In one embodiment, the method includes the first device being configured with network scheduling mode for sidelink by a base station. The method further includes the first device being configured with a first set of resources with a first time pattern for sidelink transmission through a dedicated signaling. The method also includes the first device using the first set of resources to perform sidelink transmission when the first device does not detect beam failure. Furthermore, the method includes the first device detecting a beam failure between the first device and the base station. In addition, the method includes the first device using the first set of resources to perform sidelink transmission to a second device when the beam failure is not resolved.