NR Relay Link Resource Control to Prevent Simultaneous Interference
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Solution Overview
Problem
There is a need for appropriate control of relay operations in communication apparatuses that perform signal relaying between user terminals and radio base stations, particularly in the context of NR Network-controlled Repeaters (NCRs), to avoid signal interference and inefficient power consumption.
Innovation Solution
A communication apparatus and method that controls transmission or reception operations in a second link based on the support of simultaneous operations in a first and second link, ensuring non-overlapping resource allocation for different operations to prevent simultaneous transmission or reception in NCRs, thereby optimizing ON-OFF control and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the relay apparatus performs simultaneous transmission and reception operations in both first and second links, then the relay coverage and data transfer efficiency are improved, but signal interference and power consumption increase
Solution Approach 1:
The patent segments the relay operations by dividing the time-frequency resources into distinct first resources for the first link and second resources for the second link. This segmentation prevents simultaneous transmission and reception operations from interfering with each other, allowing the relay apparatus to maintain relay coverage while avoiding signal interference through proper resource allocation separation.
Solution Approach 2:
The patent introduces a resource dimension (time-frequency resources) to manage the relay operations. By allocating different resource sets to different links and operations, the system can support simultaneous relay functionality while preventing interference through dimensional separation of operations in the resource space.
2Reliability
If the relay apparatus continuously monitors and controls transmission and reception operations, then the relay operation reliability is improved, but the control complexity and power consumption increase
Solution Approach 1:
The patent applies preliminary action by having the higher layer determine and configure the resource allocation for both links before the actual relay operations begin. The control information is prepared in advance, reducing the need for continuous real-time monitoring and control decisions, thereby maintaining reliability while simplifying the control process.
Solution Approach 2:
The patent implements feedback mechanisms where the relay apparatus reports its operational status and the base station adjusts control information accordingly. This feedback loop ensures reliable relay operation by allowing dynamic adaptation to changing conditions while maintaining manageable control complexity through structured information exchange.
Data Source
AI summary
A communication device comprising: a control unit that, on the basis of whether simultaneous operations are supported, said simultaneous operations being a transmission operation or a reception operation on a first link between a base station and the communication device, and a transmission operation or a reception operation on a second link between the base station and the communication device, said second link being used for forwarding between the base station and a terminal, controls the transmission operation or reception operation on the second link; and a communication unit that performs signal transmission or reception on the second link in accordance with the control of the control unit.