Spectral Gaps Assessment TRIZ Cases
- Supplementary Uplink Use of Unlicensed Spectrum for 5G Coverage
Channel-quality feedback selects unlicensed SUL bands to extend 5G uplink coverage while limiting interference and carrier binding.
- Multi-Slot Sidelink Transmission Structure for Unlicensed Spectrum
A structured multi-slot PSCCH and PSSCH layout cuts repeated channel assessment overhead and improves sidelink throughput in unlicensed spectrum.
- Unlicensed Uplink Channel Access Using NDI-Based Contention Window
NDI-based contention window control resets or expands backoff after channel sensing, improving uplink access in unlicensed bands.
- Unlicensed Wireless Signaling With Shared LBT for RRC and Reference Signals
Combining RRC messages and reference signals in shared time units cuts LBT attempts, interference, and energy use on unlicensed spectrum.
- FR2 QCL Signaling via MIB Subcarrier Spacing Reuse
Reusing the MIB subCarrierSpacingCommon field lets FR2 UEs infer QCL relations despite limited signaling bits, easing SS/PBCH processing.
- NR-U UE Capability Signaling for CORESET RB Offset Allocation
UE capability signaling enables CORESET RB offset support and flexible PDCCH monitoring in NR-U, reducing wasted spectrum resources.
- Unlicensed Sidelink Symbol Transmission for Slot Resource Utilization
Uses unoccupied slot symbols in unlicensed sidelink transmission to cut channel waste and improve access fairness, reliability, and utilization.
- Clear Channel Assessment Timing for Shared Spectrum Downlink
During the control-to-data gap, base stations run enhanced CCA to reserve shared spectrum more reliably and avoid downlink delays.
- HARQ-ACK Feedback Bitmap for CBG Uplink Contention Window Control
DFI bitmap configuration lets terminals map TB or CBG feedback to contention window control, improving HARQ-ACK reliability in unlicensed bands.
- Listen-Before-Talk Cell Reconfiguration in Carrier Aggregation
LBT failure reporting lets one base station reconfigure another cell, improving unlicensed spectrum use and dual-connectivity efficiency.
- Broadband Spectrum Identification for Real-Time Signal Profiling
Near real-time spectrum sensing profiles wireless signals, matches device signatures, and tracks degradation to reduce interference.
- Directional Channel Access for mmWave Unlicensed Initial Access
Directional LBT across selected beams improves initial access robustness in 57-71 GHz unlicensed spectrum while limiting latency.
- Multi-Beam PDCCH Repetition for Reliable Downlink Control
Repeated PDCCH across consecutive slots and beams improves downlink control decoding when CORESET duration and single-beam coverage limit reliability.
- Wireless Train Spectrum Sensing Using CNN Communication Inference
A CNN infers base-station communication status from local radio conditions, improving vacant-channel sensing in wireless train control.
- LTE-to-NR Sidelink Sensing Sharing for Better Resource Selection
Shares LTE sidelink sensing results with the NR sidelink module to improve resource selection, utilization, and conflict reduction in one UE.
- Sidelink CoT Sharing for Low-Latency Reference Signal Broadcast
Positioning groups share sidelink channel occupancy time to send reference signals with lower latency, better coordination, and improved location estimation.
- Clear Channel Assessment Timing for Shared Spectrum Access
Base stations use gap-based extended and one-shot CCA to reserve shared spectrum faster while avoiding redundant channel checks.
- Wireless operation in unlicensed spectrum
Cognitive carrier aggregation extends cellular bandwidth into unlicensed bands while using sensing and coordinated access to limit interference.
- PSSCH Resource Timing for HARQ Feedback in Unlicensed Sidelink
Selecting a target PSFCH occasion sets the minimum gap between unlicensed PSSCH resources, enabling HARQ-based TB retransmission.
- Sidelink PRS Signaling Structure for Adaptive UE Positioning
UEs exchange sidelink control information to determine PRS resources dynamically, improving 5G/NR positioning accuracy across varying coverage.
- UE Channel Access Using LBT-Free Preamble Transmission
A UE sends the preamble without LBT, then senses the channel for later signals to cut access delay while limiting interference.
- NR-U CCA Failure Limits Adapted to Signal Periodicity
Dynamic Lmax mapping to SSB, PRACH, and CSI-RS periodicity helps NR-U devices avoid premature task failure during handover.
- SRS-Based Crosslink Interference Measurement in NTN Spectrum Sharing
Periodic SRS across consecutive symbols enables crosslink interference measurement between terrestrial and non-terrestrial networks despite delay and frequency offsets.