Beam Direction Selection for Wireless Signal Transmission
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting and receiving wireless signals, particularly in managing control and data channels across multiple analog beam directions, which affects reliability and latency, especially in scenarios with unknown or changing beam directions.
Innovation Solution
A method and apparatus for a user equipment (UE) in a wireless communication system that receives a control channel in multiple analog beam directions, selects the best beam, and feeds back feedback information to receive a data channel only in that specific beam direction, optimizing transmission resources and channel spacing to enhance reliability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control channel is received in multiple analog beam directions, then the reliability of control channel reception is improved, but the complexity of managing multiple beam directions increases
Solution Approach 1:
The patent segments the beam direction management into two distinct phases: a first phase for receiving the control channel in multiple analog beam directions to ensure reliability, and a second phase for receiving the data channel in a single selected beam direction to reduce complexity. This temporal segmentation allows the system to leverage multiple beams when needed while avoiding continuous management of multiple beams.
Solution Approach 2:
The patent dynamically switches between multiple beam direction mode (for control channel reception) and single beam direction mode (for data channel reception) based on the specific communication requirements. The UE selects one analog beam direction from the plurality of beam directions received, enabling adaptive beam management that balances reliability and complexity.
2Measurement precision
If feedback information is transmitted for each analog beam direction, then the accuracy of beam selection is improved, but the time required for feedback transmission increases
Solution Approach 1:
The patent extracts only the essential feedback information (the selected analog beam direction) rather than transmitting feedback for all possible beam directions. The UE transmits feedback information corresponding to only one selected analog beam direction from the plurality of beam directions, significantly reducing feedback transmission time while maintaining sufficient accuracy for beam selection.
Solution Approach 2:
The patent applies partial action by requiring the UE to receive and feedback on only a subset of beam directions (one selected beam) rather than all possible beam directions. This partial feedback approach reduces the time required for feedback transmission while still providing sufficient information for accurate beam selection and subsequent data channel reception.
3Reliability
If the data channel is received in multiple analog beam directions, then the reliability of data reception is improved, but the resource allocation complexity increases
Solution Approach 1:
The patent segments the channel reception process into control channel reception (using multiple analog beam directions for reliability) and data channel reception (using a single selected beam direction). This segmentation simplifies resource allocation for data channels while maintaining control channel reliability, as the single beam direction for data reception can be directly determined from the control channel feedback.
Solution Approach 2:
The patent performs preliminary beam direction selection and feedback transmission for the control channel before data channel reception. The UE selects one analog beam direction from the plurality of beam directions and transmits feedback information, which then determines the beam direction for subsequent data channel reception. This preliminary action simplifies subsequent resource allocation for data channels.
Data Source
AI summary
The present invention relates to a wireless communication system and, more particularly, to a method and a device for the method. The method comprises the steps of: receiving same control channels in a plurality of differing analog beam directions; transmitting feedback information about one analog beam direction selected from the plurality of differing analog beam directions in which the control channels have been received; and receiving data channels, which correspond to the control channels, in only one analog beam direction, which is related to the feedback information, among the plurality of differing analog beam directions.