Network-Controlled Repeater Forwarding for Sub-Band Full-Duplex
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Solution Overview
Problem
Existing wireless communication systems face challenges in optimizing repeater node operations to support sub-band full-duplex (SBFD) communication, as they are often limited to half-duplex operation, leading to inefficiencies in uplink and downlink performance, especially during traffic-heavy periods.
Innovation Solution
Provision of SBFD configuration information to repeater nodes, enabling them to adjust forwarding directions within SBFD symbols, thereby improving communication performance by allowing simultaneous uplink and downlink operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If repeater nodes operate in half-duplex mode, then device complexity is reduced, but productivity deteriorates due to inability to handle simultaneous uplink and downlink traffic
Solution Approach 1:
The repeater node dynamically switches between half-duplex and full-duplex forwarding directions based on received configuration information from the network node. This dynamic adaptability allows the repeater to optimize productivity by enabling simultaneous uplink and downlink operations when needed, while maintaining reduced complexity by defaulting to simpler half-duplex mode when full-duplex is not required.
2Adaptability or versatility
If repeater nodes support full-duplex operation, then adaptability improves for handling traffic dynamics, but device complexity increases due to additional forwarding direction control
Solution Approach 1:
The network node acts as an intermediary that provides configuration information to the repeater node, indicating the forwarding direction for each SBFD symbol. This intermediary control mechanism allows the repeater to achieve high adaptability for handling diverse traffic dynamics without increasing its own internal complexity, as the control decisions are made externally by the network node.
3Adaptability or versatility
If repeater nodes use fixed forwarding direction, then device complexity is reduced, but adaptability deteriorates for SBFD communication patterns
Solution Approach 1:
The repeater node changes its forwarding direction parameter based on configuration information received from the network node for each SBFD symbol. This parameter change approach allows the repeater to adapt to different SBFD communication patterns and traffic conditions without requiring complex decision-making logic, as the forwarding direction is directly controlled by external configuration parameters.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a repeater node may receive, from a network node, sub-band full-duplex (SBFD) configuration information associated with the network node, wherein the SBFD configuration information indicates one or more SBFD symbols and indicates a forwarding direction for the repeater node in the one or more SBFD symbols. The repeater node may forward communications that are received in the one or more SBFD symbols in the forwarding direction indicated in the SBFD configuration information. Numerous other aspects are described.