Spatial Relation Parameters for Multi-Beam Channel Reception
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Solution Overview
Problem
Current communication systems face challenges in managing beamforming signals in high-frequency bands due to increased path loss and dynamic user movement, leading to frequent signal interruptions and a lack of support for multi-beam, multi-link, or multi-TRP transmission scenarios, where existing protocols fail to provide adequate QCL information indication.
Innovation Solution
A method for determining spatial relation parameters through receiving first signaling with multiple candidate state values, allowing for the selection of target spatial relation parameters to receive channels effectively, particularly in multi-beam and multi-TRP scenarios, enhancing flexibility and reducing indication overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming technology is used to compensate for path loss in high frequency bands, then signal transmission quality is improved, but frequent handovers are required when users move, causing signal interruption
Solution Approach 1:
The patent applies preliminary action by having the terminal measure and report beam quality information in advance before handover is needed. The network device pre-configures multiple beam directions and the terminal pre-measures their qualities, so when user movement requires beam switching, the system can quickly switch to a pre-identified suitable beam without interruption. This is implemented through the mechanism where the terminal measures downlink reference signals across multiple beams and reports beam quality information to the network device for future handover decisions.
2Speed
If dynamic measurement and reporting mechanism is introduced for beam tracking, then beam switching responsiveness is improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the beam management function into distinct segments: (1) beam sweeping and measurement by the terminal, (2) beam quality reporting by the terminal, and (3) beam selection and configuration by the network device. This segmentation allows each component to perform its specific function independently, reducing overall system complexity while maintaining fast beam switching capability. The terminal handles measurement and reporting separately from the network device's beam selection process.
Solution Approach 2:
The patent uses beam quality information as an intermediary that bridges the terminal's measurement capabilities and the network device's beam selection decisions. Instead of direct complex interaction, the terminal measures beam qualities and reports them as intermediate data, which the network device then uses for beam selection. This intermediary mechanism simplifies the communication protocol and reduces processing complexity while enabling fast beam switching.
3Adaptability or versatility
If existing protocol is used for beam indication, then compatibility is maintained, but multi-beam and multi-TRP transmission scenarios cannot be supported
Solution Approach 1:
The patent applies universality by designing a beam indication mechanism that can handle multiple transmission scenarios (single-beam, multi-beam, single-TRP, multi-TRP) through a unified approach. The network device configures multiple beam directions and the terminal measures all of them, allowing the same mechanism to support various transmission modes. The beam indication information can indicate either a single beam or multiple beams, and the terminal can receive data from different TRPs using different beams, making the protocol versatile without requiring separate procedures for each scenario.
Data Source
AI summary
An information transmission method, an apparatus, and a device are disclosed. The method includes: A terminal receives first signaling, where the first signaling includes a first field, a state value of the first field is used to indicate a first spatial relation parameter for receiving a first channel, the state value of the first field is one of a plurality of candidate state values corresponding to the first field, and at least one of the plurality of candidate state values corresponds to two or more spatial relation parameters. The terminal obtains one or more target spatial relation parameters in the first spatial relation parameter, and receives the first channel based on the one or more target spatial relation parameters.