User Equipment TDD Configuration for Sidelink
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Solution Overview
Problem
Current wireless communication technologies face challenges in efficiently determining and configuring Time Division Duplexing (TDD) configuration information for sidelink communication in New Radio (NR) networks, particularly when selecting an evolved base station (eNB) as a synchronization source, which affects communication efficiency and periodicity in high-speed and high-node density environments.
Innovation Solution
A method for user equipment to receive system information including TDD configuration from a base station, transmit sidelink communication system information, and select a synchronization source on a frequency domain resource, with indication information for interpreting TDD configuration information, allowing effective configuration of TDD configuration patterns and periodicity, including options for configuration periodicity values such as 6 ms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user equipment selects an eNB as synchronization source in NR sidelink communication, then synchronization accuracy is improved, but TDD configuration interpretation complexity increases due to potential mismatch between LTE TDD configuration and NR sidelink TDD configuration
Solution Approach 1:
The patent introduces an indication information field as an intermediary element that mediates between the LTE TDD configuration from eNB and the NR sidelink TDD configuration. This indication information explicitly tells the receiving UE how to interpret the TDD configuration, eliminating the need for complex inference and resolution of configuration mismatches, thus reducing interpretation complexity while maintaining synchronization accuracy
Solution Approach 2:
The patent changes the parameter representation by introducing indication information that explicitly specifies the TDD configuration interpretation mode. Instead of relying on implicit configuration matching between LTE and NR, the system uses explicit parameter indication to define the relationship, transforming a complex interpretation problem into a straightforward parameter application problem
2Adaptability or versatility
If flexible TDD configuration patterns are implemented in NR sidelink, then communication adaptability is improved, but configuration management complexity increases
Solution Approach 1:
The patent segments the TDD configuration into multiple independent patterns, each with its own indication information. This allows the system to support multiple TDD configurations simultaneously without requiring complex management of a single monolithic configuration, reducing configuration management complexity while maintaining communication adaptability
Solution Approach 2:
The patent implements dynamic TDD configuration where the indication information can be updated to switch between different TDD patterns based on communication needs. This dynamic approach allows flexible adaptation to different scenarios without requiring complex static configuration management, as the system can adapt configurations in real-time through simple indication updates
Data Source
AI summary
The present disclosure provides a method executed by a user equipment, and a user equipment. The method includes receiving system information from a base station, the system information including time division duplexing (TDD) configuration information; and transmitting sidelink communication system information including sidelink TDD configuration information.