Dynamic Beam Indication for 5G NR Multi-Carrier Signaling
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Solution Overview
Problem
In NR systems, frequent RRC reconfiguration is necessary to change beam information, leading to inefficiencies in signaling overhead and information management, especially when applying beam change signaling to multiple component carriers.
Innovation Solution
A method where a UE and a base station dynamically manage beam information by receiving channel or reference signal setting information, transmitting or receiving signals based on beam-related configuration, and applying beam change information to multiple component carriers, thereby reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequent RRC reconfiguration is used to change beam information, then beam information can be updated, but signaling overhead increases and system efficiency decreases
Solution Approach 1:
The patent introduces dynamic beam indication mechanisms where the base station can switch between different beam indication methods (first and second beam indication methods) based on real-time communication conditions. This dynamic adaptation allows the system to update beam information efficiently without requiring frequent RRC reconfiguration, thereby reducing signaling overhead while maintaining adaptability.
Solution Approach 2:
The patent changes the parameter of beam indication from static RRC configuration to dynamic MAC CE-based indication. By using MAC Control Elements to dynamically indicate beam information for different component carriers, the system achieves flexible beam switching without the overhead penalty of frequent RRC reconfiguration, resolving the contradiction between adaptability and signaling complexity.
2Reliability
If beam change signaling is applied to multiple component carriers, then beam management is improved, but signaling overhead increases
Solution Approach 1:
The patent makes the MAC CE beam indication mechanism universal by enabling it to serve multiple component carriers simultaneously. The same MAC CE structure can indicate beam information for different component carriers, allowing the system to manage beams across multiple carriers without proportionally increasing signaling overhead, thus improving reliability while controlling resource consumption.
Solution Approach 2:
The patent merges the beam indication function into the existing MAC CE framework, combining beam management for multiple component carriers with the existing control element structure. This merging approach allows beam change signaling to be applied to multiple carriers without requiring separate dedicated signaling for each carrier, thereby reducing overall signaling overhead while maintaining comprehensive beam management capability.
Data Source
AI summary
The present disclosure relates to a communication method for converging IoT technology with 5G communication systems for supporting higher data transmission rates than beyond 4G systems, and to a system therefor. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The present invention characterizes in a method for a terminal of a wireless communication system, wherein the method comprises the steps of: receiving channel or reference signal configuration information including beam-related configuration information via higher layer signalling; transmitting and receiving the channel or a reference signal to and from a base station on the basis of the beam-related configuration information; receiving beam change information for the channel or reference signal; and transmitting and receiving the channel or reference signal of a plurality of component carriers to and from the base station on the basis of the beam change information, wherein the beam-related configuration information and the beam change information include transmission configuration indicator (TCI) state information of the channel or reference signal.