User Equipment Interference Mitigation Using Neighbor UE Data
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Solution Overview
Problem
Existing wireless communication systems face challenges in identifying and mitigating interference between user equipment (UE) and network nodes, particularly in situations where the interferer is not properly configured, leading to degraded performance.
Innovation Solution
A network node receives indications of neighbor UE identifiers, location, and mobility status, or beam adaptation information to perform interference mitigation, while a UE transmits its location and mobility status or beam adaptation information to facilitate scheduling associated with interference mitigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interference mitigation is performed using neighbor UE identifiers and location information, then communication quality is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The network node pre-configures the UE with neighbor cell information including neighbor UE identifiers and location data before the UE engages in device-to-device communication. This preliminary provision of interference information allows the UE to perform interference mitigation without real-time complexity, as the reference data is already available in the device memory.
Solution Approach 2:
The network node acts as an intermediary that collects, processes, and distributes neighbor UE information to serving UEs. Instead of requiring UEs to directly exchange complex interference data, the network node mediates this information flow, simplifying the UE device complexity while maintaining reliable interference mitigation through centralized information management.
2Measurement precision
If real-time location and mobility status tracking is implemented, then interference mitigation accuracy is improved, but use of energy and processing resources increases
Solution Approach 1:
The network node provides the UE with pre-acquired location and mobility status information of neighbor UEs before the UE needs to perform interference mitigation. This eliminates the need for the UE to continuously track and process real-time location data, reducing energy consumption while maintaining accurate interference mitigation through the use of recently updated reference information.
3Reliability
If beam adaptation information is exchanged between UEs and network nodes, then cross-link interference mitigation is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential beam adaptation information parameters needed for interference mitigation from the complete beam management data set. By selecting and transmitting only the critical subset of beam information (such as beam directions and adaptation status) rather than full beam management data, the signaling overhead is reduced while maintaining effective cross-link interference mitigation capability.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may receive an indication of one or more of: an identifier of a neighbor user equipment (UE) associated with a neighbor network node, a location and mobility status of a UE served by the network node, or beam adaptation information of the UE served by the network node. The network node may perform an interference mitigation for the UE served by the network node based at least in part on the indication of one or more of: the identifier of the neighbor UE, the location and mobility status of the UE, or the beam adaptation information of the UE. Numerous other aspects are described.