Sidelink TDD Configuration Notification for Uplink
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Solution Overview
Problem
In New Radio (NR) systems, the high degree of freedom in configuring uplink, flexible, and downlink symbols in a slot leads to an increased information amount needed for notifying TDD configurations through sidelink, which can result in inefficient resource utilization and reduced communication efficiency.
Innovation Solution
A communication device that receives and processes information related to a TDD configuration, selectively transmitting only the necessary information related to the uplink configuration on a sidelink, thereby reducing the information amount required for notification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the complete TDD configuration information (including uplink, flexible, and downlink symbols) is transmitted through the sidelink, then the receiving device can obtain accurate slot format information, but the information amount increases leading to inefficient resource utilization
Solution Approach 1:
The patent extracts and transmits only the necessary uplink configuration information from the complete TDD configuration, removing redundant flexible and downlink symbol information that is not needed for sidelink communication operation
Solution Approach 2:
The TDD configuration information is segmented into essential uplink parameters and non-essential flexible/downlink parameters, with only the essential portion being transmitted through the sidelink
2Loss of information
If the complete TDD configuration information is transmitted through the sidelink, then all slot format details are provided, but resource allocation efficiency decreases due to increased signaling overhead
Solution Approach 1:
The patent extracts only the uplink configuration parameters that are essential for sidelink operation, eliminating unnecessary information about flexible and downlink symbols from the transmitted message
3Measurement precision
If detailed TDD configuration information is transmitted on the sidelink, then comprehensive slot format notification is achieved, but communication efficiency is reduced due to larger message size
Solution Approach 1:
The patent extracts and transmits only the necessary uplink configuration information from the complete TDD configuration, removing redundant flexible and downlink symbol information that is not needed for sidelink communication operation
Solution Approach 2:
The TDD configuration information is segmented into essential uplink parameters and non-essential flexible/downlink parameters, with only the essential portion being transmitted through the sidelink
Data Source
AI summary
A communication device includes a receiving unit that receives information indicating a time division duplex (TDD) configuration; a control unit that obtains information related to an uplink, in the received information indicating the TDD configuration; and a transmitting unit that transmits the information related to the uplink on a sidelink.