Repeater Time Resource Configuration for Subcarrier Spacing and Cyclic Prefix
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Solution Overview
Problem
There is a lack of specification in existing technologies for appropriately configuring the subcarrier spacing and cyclic prefix for time domain resources in network-controlled repeaters, leading to potential discrepancies and failures in signal forwarding.
Innovation Solution
The repeater configures subcarrier spacing and cyclic prefix for time domain resources based on assumptions, predefined rules, or dynamic indications in control information, ensuring alignment with base station and terminal settings to facilitate accurate signal forwarding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network-controlled repeaters use conventional amplify-and-forward methods without specified time resource allocation rules, then device complexity is reduced, but signal forwarding reliability deteriorates due to potential discrepancies in subcarrier spacing and cyclic prefix configuration
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting subcarrier spacing and cyclic prefix configurations based on control information received from the base station. The repeater changes these time domain resource parameters according to received indications, ensuring alignment between the repeater's forwarding resources and the base station- terminal link resources, thereby resolving the reliability issue without requiring complex autonomous allocation algorithms
Solution Approach 2:
The patent implements feedback mechanisms where the base station provides control information to the repeater regarding the time domain resources allocated for signal forwarding. The repeater uses this feedback to configure its subcarrier spacing and cyclic prefix, ensuring that the forwarding operation maintains synchronization and parameter consistency with the network, thus improving reliability through network-controlled parameter adjustment
2Manufacturing precision
If network-controlled repeaters autonomously allocate time domain resources without predefined rules, then adaptability improves, but manufacturing precision deteriorates due to lack of specification for subcarrier spacing and cyclic prefix configuration
Solution Approach 1:
The patent applies dynamics by making the time domain resource configuration flexible and adjustable through control information from the base station. The repeater can dynamically change subcarrier spacing and cyclic prefix settings based on received indications, allowing the system to adapt to different network conditions and service requirements while maintaining precise configuration through network control rather than autonomous decision-making
3Productivity
If network-controlled repeaters use dynamic indication for time resource allocation, then productivity improves, but device complexity increases due to processing requirements for control information
Solution Approach 1:
The patent applies preliminary action by having the base station pre-configure and indicate the time domain resource parameters (subcarrier spacing, cyclic prefix) to the repeater before signal forwarding begins. The repeater receives these parameters in advance through control information and configures its forwarding resources accordingly, enabling efficient signal forwarding without requiring complex real-time processing or autonomous resource allocation algorithms during the forwarding operation
Data Source
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AI summary
A repeater comprises: a reception unit that receives control information through a first link used for the exchange of control information between a base station and the repeater; and a control unit that determines, on the basis of the control information, a time resource allocated to the repeater for a second link used for transferring signals between the base station and a terminal.