UE Beam Reporting for Full Duplex Multi-Beam Selection
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing self-interference and beam selection for full duplex operations, which can lead to reduced signal quality and spectral efficiency.
Innovation Solution
User equipment (UE) determines a set of recommended base station transmit beams based on measurements of these beams and associated self-interference, and transmits a report to the base station for optimized full duplex operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If full duplex operation is implemented using single beam, then device complexity is reduced, but self-interference increases and signal quality deteriorates
Solution Approach 1:
The patent divides the single beam into multiple beams (first beam for uplink, second beam for downlink). The base station transmits multiple beams simultaneously, and the UE selects different beams for transmitting and receiving signals, thereby segmenting the interference problem into manageable beam pairs with spatial separation.
Solution Approach 2:
The patent transitions from single-beam operation to multi-beam operation by adding the beam dimension. Instead of using one beam for both uplink and downlink, the system utilizes multiple beams in different spatial directions, adding a dimensional aspect to beam selection that enables spatial isolation of interference.
2Object-affected harmful factors
If multiple beams are used for full duplex operation, then signal quality improves through spatial separation, but device complexity increases
Solution Approach 1:
The UE autonomously determines the set of recommended beams by measuring reference signals and evaluating self-interference levels. The UE generates beam recommendation information without requiring extensive base station coordination, allowing the device to serve itself in beam selection and reducing overall system complexity.
Solution Approach 2:
The UE provides feedback to the base station by transmitting beam recommendation information based on its measurements. This feedback mechanism enables the base station to adjust beam configurations based on actual interference conditions observed at the UE, creating a closed-loop system that optimizes beam selection dynamically.
3Productivity
If traditional beam selection is used, then device complexity is low, but spectral efficiency remains suboptimal for full duplex
Solution Approach 1:
The UE performs preliminary measurements of reference signals transmitted by the base station before actual data transmission. By measuring and evaluating beam qualities in advance, the UE can determine recommended beams and provide recommendations before full duplex communication begins, enabling optimized beam selection without adding complexity to the data transmission phase.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a set of recommended base station transmit beams for full duplex operation based at least in part on measurements of a set of base station transmit beams and measurements of self-interference associated with the set of base station transmit beams. The UE may transmit a report that indicates a recommendation to use one or more of the set of recommended base station transmit beams for full duplex operation. Numerous other aspects are described.