DMRS Bundling Phase Continuity in Full-Duplex Slots
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Solution Overview
Problem
Existing wireless communication systems face challenges in maintaining phase continuity and power consistency during transitions between full-duplex and half-duplex slots, especially due to frequency hops, edge bandwidth part allocations, and time gaps, which affect demodulation reference signal (DMRS) bundling.
Innovation Solution
A method and apparatus for wireless communication that allow a user equipment (UE) to indicate its capability to maintain phase continuity and power consistency for DMRS bundling between full-duplex and half-duplex slots. The UE determines whether to terminate a time domain window (TDW) based on this capability and transmits signals accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the system switches between full-duplex and half-duplex slots, then communication flexibility and spectral efficiency are improved, but phase continuity and power consistency deteriorate
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting transmission parameters based on the duplex mode. The UE determines whether to terminate a TDW based on capability indications related to phase continuity and power consistency, and adjusts DMRS bundling behavior accordingly when switching between full-duplex and half-duplex slots
Solution Approach 2:
The patent segments the transmission timeline into distinct TDW (Time Domain Window) units. When phase continuity cannot be maintained during duplex mode switching, the UE terminates the current TDW and starts a new TDW, effectively segmenting the transmission to maintain DMRS bundling integrity within each segment
2Productivity
If frequency hops are performed between slots, then spectral efficiency is improved, but phase continuity deteriorates
Solution Approach 1:
The patent handles frequency hops by changing the TDW parameter state. When a frequency hop occurs between slots, the UE evaluates whether phase continuity is maintained and terminates the TDW if necessary, allowing DMRS bundling to be re-established in the new frequency location
3Adaptability or versatility
If the allocated frequency domain resources are close to an edge of a bandwidth part, then resource allocation flexibility is improved, but power consistency deteriorates
Solution Approach 1:
The patent addresses edge bandwidth part allocations by adjusting the TDW continuity parameter. When resources are allocated near the edge of a bandwidth part, the UE evaluates power consistency requirements and may terminate the TDW to maintain proper power levels for DMRS bundling
4Adaptability or versatility
If a time gap greater than a threshold exists between slots, then scheduling flexibility is improved, but phase continuity deteriorates
Solution Approach 1:
The patent uses the time gap parameter to control TDW continuity. When a time gap greater than a threshold exists between slots, the UE terminates the TDW to maintain phase continuity, as the extended gap may cause phase drift that would compromise DMRS bundling accuracy
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an indication of a capability associated with maintaining phase continuity and power consistency for demodulation reference signal (DMRS) bundling between a full-duplex slot and a half-duplex slot. The UE may transmit a first signal during a first slot of a first time domain window (TDW) associated with the DMRS bundling. The UE may determine whether to terminate the first TDW based on the capability associated with maintaining the phase continuity and the power consistency between the full-duplex slot and the half-duplex slot. The UE may transmit a second signal during a second slot of the first TDW or a second TDW based on the determination of whether to terminate the first TDW.