Beam Indication via Spatial Filter Alignment in Multi-Beam Systems
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Solution Overview
Problem
In wireless communication systems, existing beam management techniques face challenges in efficiently indicating and aligning new beams for communication devices, leading to potential failures in receiving transmission configuration indicator (TCI) channels due to misalignment of timing and coverage issues as devices move or rotate.
Innovation Solution
The implementation of a method and apparatus that involve a user equipment (UE) and a base station (BS) with transceivers and processors to receive, process, and transmit TCI state identifiers, allowing for the determination and updating of spatial filters for data and control channels, ensuring accurate beam alignment and reception of TCI channels through enhanced beam indication mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing beam management techniques are used, then beam indication can be provided, but timing misalignment and coverage issues occur leading to potential failures in receiving TCI channels
Solution Approach 1:
The base station transmits the TCI channel using a spatial filter that is pre-aligned with the spatial filter the UE will use for reception. This preliminary alignment of spatial filters before actual data transmission ensures that the UE can reliably receive the TCI channel without timing misalignment issues, directly resolving the contradiction between reception reliability and timing loss.
2Area of stationary object
If existing beam management techniques are used, then communication can be maintained, but coverage issues arise as devices move or rotate
Solution Approach 1:
The UE provides feedback (ACK/NACK) regarding the successful reception of the TCI channel. This feedback mechanism allows the base station to adaptively adjust beam configurations and spatial filters in response to UE movement or rotation, thereby maintaining coverage and improving adaptability to changing device positions.
Solution Approach 2:
The system dynamically updates spatial filters and beam configurations based on current channel conditions and device positions. The base station can retransmit or reconfigure TCI channels with updated spatial filters when movement or rotation is detected, making the coverage area adaptive rather than static.
3Productivity
If traditional beam indication mechanisms are used, then basic communication is possible, but radio interface efficiency and coverage are limited
Solution Approach 1:
The patent combines the TCI channel transmission with spatial filter alignment in a unified process. By merging the beam indication function with the spatial filter configuration, the system improves radio interface efficiency without proportionally increasing complexity, as the same spatial filter mechanism serves dual purposes.
Solution Approach 2:
The spatial filter mechanism is designed to serve multiple functions: it is used for both receiving data channels and receiving control channels including the TCI channel itself. This multi-functionality improves overall system efficiency by using a single versatile beam management approach rather than separate mechanisms for different channel types.
Data Source
AI summary
An apparatus for beam management includes a transceiver configured to receive configuration information for one or more transmission configuration indicator (TCI) states and corresponding channels, receive one or more TCI state identifiers (IDs) on a channel for conveying TCI state IDs from among the corresponding channels, and transmit an acknowledgement message in response to the reception of the one or more TCI state IDs. The apparatus further includes a processor configured to determine, based on the one or more TCI state IDs, TCI states for data and control channels, respectively, from among the corresponding channels, and update spatial filters for the data and control channels based on the determined TCI states for the data channels and the control channels, respectively. The transceiver is further configured to receive the data channels and the control channels based on the updated spatial filters for the data and the control channels, respectively.