Group Sidelink Beam Sweeping for Shared Beam Management
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently managing beamforming and resource allocation for device-to-device (D2D) communication, particularly in complex and dynamic environments, leading to suboptimal performance and resource inefficiencies.
Innovation Solution
Implementing a beam sweeping mechanism for group sidelink communication, which involves coordinated beam management and resource allocation strategies to optimize signal transmission and reception among multiple devices, enhancing communication efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is used for D2D communication to improve signal quality, then communication reliability is improved, but device complexity increases due to coordinated beam management requirements
Solution Approach 1:
The transmitting device autonomously performs beam sweeping and selects optimal beams without requiring complex coordination with receiving devices. The receiving device simply measures and provides feedback, allowing the transmitter to self-manage beamforming decisions and reduce overall system complexity
Solution Approach 2:
The beam management process is divided into separate functions: beam sweeping (transmission), beam measurement (reception), and beam selection (feedback). This segmentation allows each device to focus on specific tasks, reducing the complexity burden on individual devices while maintaining reliable communication
2Productivity
If resource allocation is optimized for group sidelink communication to improve communication efficiency, then productivity is improved, but device complexity increases due to coordinated resource management
Solution Approach 1:
Resources are pre-configured and pre-allocated for group sidelink communication before actual data transmission begins. This preliminary setup includes defining resource pools, time-frequency structures, and beam-resource mappings in advance, which simplifies real-time resource management and improves communication efficiency without requiring complex dynamic coordination
Solution Approach 2:
The resource allocation mechanism is designed to serve multiple functions simultaneously: it manages beamforming resources, handles group communication coordination, and supports both unicast and multicast scenarios. This universal approach reduces the need for separate complex management systems for different communication modes
Data Source
AI summary
A wireless device determines to assign a same beam management identifier to a first unicast link of a first wireless device and a second unicast link of a second wireless device, based on measurements associated with the first unicast link and the second unicast link. The wireless device transmits, based on determining to assign the same beam management identifier to the first unicast link and the second unicast link, an indication of the same beam management identifier to the first wireless device and the second wireless device. The wireless device transmits, to the first wireless device and the second wireless device, a sidelink transmission including: a field value indicating the same beam management identifier, and one or more sidelink reference signals for beam management of the first unicast link and the second unicast link.