5G Beamforming System Information Reception via Quality Measurement
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Solution Overview
Problem
In 5G communication systems, there is a need for an effective method to receive system information through beamforming in super high frequency bands to reduce propagation loss and increase transmission distance, while existing methods do not adequately address the scheduling and quality measurement of beams for efficient system information transmission.
Innovation Solution
A method where user equipment (UE) receives system information through a beam by measuring the quality of multiple beams transmitted by a base station, selecting the best beam based on quality, and receiving scheduling information to determine the time window for system information transmission, which can be defined on a beam or set of beams basis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If beamforming is used in super high frequency bands, then propagation loss is reduced and transmission distance is increased, but device complexity increases due to the need for beam quality measurement and selection mechanisms
Solution Approach 1:
The base station transmits beam quality information and scheduling information in advance before the UE needs to receive system information. The UE measures beam quality and receives scheduling information during a first time window, then uses this pre-obtained information to efficiently receive system information in a second time window without needing to perform repeated measurements, thus reducing device complexity while maintaining the benefits of beamforming
Solution Approach 2:
The system enables the UE to autonomously measure beam quality and select appropriate beams based on pre-received scheduling information. The UE self-manages the beam selection process and system information reception timing without requiring complex network control, reducing overall system complexity while achieving effective beamforming in super high frequency bands
2Reliability
If system information is transmitted through multiple beams, then coverage and reliability are improved, but loss of information increases due to scheduling information differences across beams
Solution Approach 1:
The base station transmits universal scheduling information that applies to multiple beams simultaneously. The UE receives this scheduling information once and uses it to determine time windows for receiving system information from multiple different beams, eliminating the need to receive separate scheduling information for each beam and preventing information loss while maintaining multi-beam coverage and reliability
3Reliability
If beam quality measurement and selection is implemented, then system information reception reliability is improved, but loss of time increases due to the measurement and selection process
Solution Approach 1:
Beam quality measurement and scheduling information reception are performed in advance during a first time window, before the actual system information reception in the second time window. This preliminary action allows the UE to have beam quality and scheduling information ready, enabling efficient system information reception without time loss during the actual reception phase
Solution Approach 2:
The system uses periodic time windows for beam quality measurement and scheduling information reception, separated from system information reception time windows. This periodic structure allows the UE to efficiently alternate between measurement/scheduling phases and reception phases, minimizing time loss while maintaining reliable system information reception
Data Source
AI summary
A method for a terminal to receive system information via a beam in a wireless communication system, and a device supporting the method are provided. The method may comprise: a step of receiving, via a beam, a message including scheduling information for system information, wherein the scheduling information includes information on a time window in which the system information is scheduled; and a step of receiving the system information in the time window via the beam.