5G Beam Reference Signaling for Flexible Beam Sweeping
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Solution Overview
Problem
Existing 5G communication systems face challenges in efficiently managing beamforming and channel state information reporting due to limited beam management reference signals, which affect data transmission quality and network flexibility in supporting diverse services with varying quality of service requirements.
Innovation Solution
Implementing advanced beam management reference signals through implicit and explicit signaling, allowing for efficient beam selection and configuration, including quasi-co-located reference signals and beam cycling operations, to enhance channel state information reporting and adapt to different service needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If beam management reference signals are limited to maintain system simplicity, then device complexity is reduced, but data transmission quality deteriorates
Solution Approach 1:
The patent makes existing reference signals (CSI-RS, SSB) serve dual purposes: their traditional channel state information functions plus new beam management functions. This allows the system to improve beam management capability without adding dedicated beam management reference signals, thereby maintaining system simplicity while enhancing data transmission quality through better beam selection and tracking
Solution Approach 2:
The patent enables user equipment to autonomously perform beam selection and beam tracking by measuring reference signals and determining beam correspondence relationships without network assistance. This self-service mechanism improves transmission quality through accurate beam management while avoiding the complexity of network-controlled beam management signaling
2Reliability
If advanced beam management techniques are implemented to improve data transmission quality, then transmission reliability is enhanced, but device complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where user equipment measures reference signals, determines beam quality metrics, and reports beam correspondence information to the network. This feedback loop enables reliable beam management by continuously adapting beam selections based on measured channel conditions, thereby enhancing transmission reliability through data-driven beam optimization
Solution Approach 2:
The patent performs preliminary beam measurement and beam correspondence determination during initial access and connection establishment phases. By pre-establishing beam relationships and storing beam configuration information before data transmission begins, the system ensures reliable beam availability while reducing the complexity of real-time beam management during active transmission
3Adaptability or versatility
If beam cycling operations are implemented to support diverse services, then adaptability is improved, but loss of time increases
Solution Approach 1:
The patent implements dynamic beam management where the network configures different beam cycling patterns and reference signal resources based on service requirements. For latency-sensitive services, the system uses pre-configured beams with minimal cycling, while for diverse service support, adaptive beam cycling is enabled. This dynamic adjustment allows the system to maintain adaptability for diverse services while minimizing time loss through service-specific optimization
Solution Approach 2:
The patent segments beam management operations into service-specific configurations, allowing different beam cycling strategies for different service types. By dividing the beam management space into service-oriented segments, the system can apply lightweight beam management for time-critical services while using more comprehensive beam cycling for services that require diverse beam options, thereby reducing overall time loss while maintaining adaptability
Data Source
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AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments, a method of a terminal for a beam management in a wireless communication system is provided. The method comprises receiving, from a base station (BS), configuration information including information of receive (Rx) beam identifications (IDs) associated with Rx beams, receiving, from the BS, reference signals for determining the Rx beams, wherein the Rx beams include different Rx beam IDs, and performing, based on the configuration information, an Rx beam sweeping for the Rx beams to receive downlink channels.