UE Beam Selection via BS Indications for mmW Signal Reception
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Solution Overview
Problem
In wireless communication systems, particularly in millimeter wave (mmW) communications, user equipment (UE) faces challenges in receiving multiple directional beamformed signals simultaneously due to limited capabilities in monitoring multiple directions, leading to potential loss of data and interference management issues.
Innovation Solution
The UE selects which signals to receive in a time interval based on indications from base stations (BS), determining the appropriate receive beam and timing to ensure receipt of the most likely signal, allowing for the reception of either the first or second signaling, or both, by adjusting its receiver configuration according to the time difference between indications and signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the UE attempts to receive multiple directional beamformed signals simultaneously, then the quantity of received signals increases, but the reliability of signal reception deteriorates due to limited monitoring capabilities
Solution Approach 1:
The base station transmits indications to the UE in advance before the actual signal transmission, allowing the UE to pre-configure its receive beam and timing based on the received indication information. This preliminary configuration enables the UE to be ready to receive the intended signal without attempting to monitor multiple directions simultaneously, thus maintaining reception reliability while managing the quantity of signals effectively.
2Adaptability or versatility
If the UE monitors multiple directions simultaneously, then the adaptability of signal reception improves, but the device complexity increases due to limited monitoring capabilities
Solution Approach 1:
The base station acts as an intermediary by providing indication information to the UE about which signal will be transmitted and which receive beam should be used. This intermediary information guides the UE's receive beam configuration, eliminating the need for the UE to independently monitor multiple directions simultaneously. The indication serves as a mediator that simplifies the UE's monitoring task while maintaining adaptability to different signal transmission scenarios.
3Productivity
If the UE adjusts receive beam configuration based on real-time indications, then the productivity of signal reception improves, but the loss of time for beam switching increases
Solution Approach 1:
The base station transmits the indication information containing receive beam configuration details before the actual signal transmission occurs. This allows the UE to perform beam configuration adjustments in advance rather than during the signal transmission window, reducing the time loss associated with beam switching. The preliminary provision of indication information enables the UE to prepare its receive beam configuration without delaying the actual signal reception.
Data Source
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AI summary
A UE may identify a first indication associated with a first signaling to be received in a time interval and identify a second indication associated with a second signaling to be received in the time interval. The UE may select to receive and receive, in the time interval, at least one of the first signaling or the second signaling based on at least one of the first or second indications. One or more of the first and second indications may be received from a BS or determined by the UE via predefined or other means. A BS may convey indications of the first and/or second signaling. The first and second indications may be transmitted sufficiently before the signaling in an effort to allow the UE to select and tune its receiver beam in the direction of the signaling to be received.