On CLI mitigation techniques for LTM in FD systems
By measuring signal strength and selecting RSRP thresholds, the WTRU effectively mitigates CLI in FD systems, enhancing network stability and mobility management in FD systems.
WO2026135963A1PCT designated stage Publication Date: 2026-06-25INTERDIGITAL PATENT HOLDINGS INC
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Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- INTERDIGITAL PATENT HOLDINGS INC
- Filing Date
- 2025-11-26
- Publication Date
- 2026-06-25
AI Technical Summary
Technical Problem
Existing wireless communication systems face challenges in managing cross-link interference (CLI) in full duplex (FD) systems, particularly in sub-band non-overlapping full duplex (SBFD) operations, which affect mobility event evaluations and network performance.
Method used
A WTRU measures signal strength on uplink subbands and selects reference signal received power (RSRP) threshold values to evaluate mobility measurement events, triggering cell switching, selection, or reselection in the presence of WTRU-to-WTRU cross-link interference.
Benefits of technology
Enhances mobility management by reducing CLI, improving network stability and performance in FD systems by optimizing cell switching and selection processes.
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Smart Images
Figure US2025057292_25062026_PF_FP_ABST
Abstract
Methods for triggered mobility event evaluation, in the presence of cross-link interference (CLI), are disclosed. A wireless transmit / receive unit (WTRU) may communicate, with a base station in a serving cell, using downlink subbands of a first frequency band and an uplink subband of the first frequency band in full duplex slots, wherein the downlink subbands and the uplink subband are non-overlapping. The WTRU may measure a signal strength of a signal received on the uplink subband in a first full duplex slot. The WTRU may select a set of reference signal received power (RSRP) threshold values from among a plurality of sets of RSRP threshold values by comparing the measured signal strength to at least one threshold. The WTRU may evaluate one or more mobility measurement events using the selected set of RSRP threshold values to trigger and perform cell switching, cell selection, or cell reselection.
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