Reference Signal Broadcast Configuration With Lower Signaling Overhead
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Solution Overview
Problem
In 5G communications systems, the configuration information of reference signals is limited by the large overheads of broadcast messages, making it difficult to meet the demand for sending configuration information of multiple reference signals, especially for user equipment in inactive or idle states.
Innovation Solution
A method where a terminal device receives broadcast information containing first and second information to determine configuration parameters of reference signals, allowing it to reconstruct the configuration information efficiently, reducing the need for direct transmission of each signal's configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If configuration information of each reference signal is sent directly in broadcast message, then the terminal device can obtain complete configuration parameters, but the signaling overhead becomes too large to meet network resource constraints
Solution Approach 1:
The patent segments the configuration information into two parts: common configuration parameters (first information) that are shared across multiple reference signals, and signal-specific parameters (second information) that are individual to each reference signal. This segmentation allows the broadcast message to include configuration information for multiple reference signals without proportionally increasing the overall overhead, as the common parameters are transmitted only once.
Solution Approach 2:
The first information serves a universal function by providing common configuration parameters that apply to multiple reference signals simultaneously. This multi-functionality allows a single broadcast message to serve multiple purposes - configuring multiple reference signals without requiring separate dedicated messages for each, thereby reducing total signaling overhead while maintaining information completeness.
2Adaptability or versatility
If more reference signals are configured in broadcast message, then the terminal device can perform more functions (AGC adjustment, synchronization, beam measurement), but the broadcast message capacity is exceeded
Solution Approach 1:
The patent divides the configuration information structure into common parameters (first information) and signal-specific parameters (second information). This segmentation enables the broadcast message to efficiently encode configuration information for multiple reference signals by leveraging the shared nature of common parameters, thereby increasing the number of configurable reference signals without linearly increasing message capacity requirements.
Solution Approach 2:
The first information provides universal configuration parameters that can be applied across multiple reference signals, enabling the broadcast message to serve multiple configuration needs simultaneously. This multi-functionality allows the system to support more reference signals for diverse purposes (AGC adjustment, synchronization, beam measurement) within the same broadcast message capacity constraints.
Data Source
AI summary
A communications method includes a terminal device receives broadcast information sent by a network device, where the broadcast information includes first information indicating N configuration parameters and a plurality of pieces of second information indicating Mi configuration parameters. Then, the terminal device determines configuration information of an ith reference signal based on some or all of the configuration parameters indicated by the first information and the Mi configuration parameters indicated by the ith piece of second information, where the configuration information of the ith reference signal includes Qi configuration parameters, and Qi is greater than or equal to N, and Qi is greater than or equal to Mi. The method reduces signaling overheads of the broadcast information.