Beam-Aware Resource Allocation for SBFD Interference Mitigation
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Solution Overview
Problem
In TDD wireless communication systems, the limited allocation of uplink time domain resources leads to reduced uplink coverage and increased delay, while subband non-overlapping full duplex (SBFD) introduces cross-link interference (CLI) and blocking interference between radio access network devices, deteriorating uplink network performance.
Innovation Solution
A resource allocation method involving a central node that collects beam information from network devices, such as RSRP, to centrally schedule resources and avoid simultaneous scheduling of interfering beams, thereby reducing CLI and blocking interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If subband non-overlapping full duplex (SBFD) is used to enhance uplink resources, then uplink coverage and resource allocation are improved, but cross-link interference (CLI) and blocking interference between radio access network devices increase
Solution Approach 1:
The patent implements a feedback mechanism where network devices report beam information (such as RSRP values) to a central node. The central node uses this feedback to identify interfering beam pairs and adjusts resource allocation accordingly, preventing simultaneous scheduling of beams that would cause CLI or blocking interference.
Solution Approach 2:
The patent introduces a central node as an intermediary that coordinates resource allocation among multiple network devices. This central node collects beam information from all devices, processes it to identify potential interference, and makes centralized scheduling decisions to avoid CLI and blocking interference while maintaining SBFD benefits.
2Object-affected harmful factors
If centralized resource allocation based on beam information is implemented, then CLI and blocking interference are reduced, but signaling overhead for beam information reporting increases
Solution Approach 1:
The patent applies local quality by having each network device report only its own beam information (such as RSRP values for its transmitted beams) to the central node, rather than exchanging complete beam information with all other devices. This localized reporting approach reduces overall signaling overhead while still enabling the central node to identify interfering beam pairs through the collected information.
Data Source
AI summary
A resource allocation method is provided. A plurality of scheduled resources used for resource allocation for a plurality of network devices are determined based on beam information of the plurality of network devices to improve a scheduling mechanism between the plurality of network devices and coordinate and reduce cross link interference and blocking interference between the network devices.