Backhaul Link Beam Indication for Fast NCR Beam Selection
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Solution Overview
Problem
Existing technologies face challenges in rapidly and accurately determining the optimal beam for a backhaul link in network-controlled repeaters, leading to inefficient communication due to the need to test multiple beams for the control link, which affects communication instantaneity.
Innovation Solution
A method for backhaul link beam indication where a network device sends signaling with beam indication information, allowing the network-controlled repeater (NCR) to determine a target beam from a plurality of configured beams based on this information, without the need to test each beam individually, using beam IDs, reference signal IDs, or beam-related information such as TCI, SRI, and QCL information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple beams are tested individually to determine the optimal beam for backhaul link, then beam selection accuracy is improved, but communication instantaneity deteriorates
Solution Approach 1:
The network device pre-configures multiple beams for the control link before the NCR needs to determine the backhaul link beam. By having beams prepared in advance and using beam indication information to directly identify the target beam, the system eliminates the need for time-consuming individual beam testing while maintaining accurate beam selection.
2Reliability
If individual beam testing is performed to ensure optimal backhaul link performance, then communication reliability is improved, but communication efficiency deteriorates
Solution Approach 1:
Beam indication information acts as an intermediary that carries the identity or characteristics of the target beam from the network device to the NCR. This intermediary mechanism allows the NCR to determine the optimal backhaul link beam without performing individual beam testing, thereby maintaining communication reliability while significantly improving communication efficiency.
3Manufacturing precision
If beam configuration is indicated for each signal/channel separately, then beam configuration precision is improved, but device complexity increases
Solution Approach 1:
The beam indication information is designed to be universally applicable across multiple signals and channels. Instead of configuring beams separately for each signal/channel, the same beam indication mechanism can indicate beams for control links, backhaul links, and multiple channels simultaneously, thereby reducing configuration complexity while maintaining precise beam configuration.
Data Source
AI summary
A method for backhaul link beam indication includes: receiving by a network controlled repeater (NCR) signaling sent by a network device, in which the signaling is used for configuring a beam of a backhaul link, and the signaling includes beam indication information; and according to the beam indication information, determining by the NCR, from a plurality of beams configured by the network device for a control link of a network control repeater a target beam used by the backhaul link.