Uplink DMRS Bundling With Event-Driven Time Window Control
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Solution Overview
Problem
The existing wireless communication systems face challenges in efficiently managing demodulation reference signals (DMRS) for uplink channels, particularly in terms of time domain window management and event-based triggering, which affect the performance of advanced mobile communication systems requiring high data rates, low latency, and energy efficiency.
Innovation Solution
A method and device for transmitting and receiving DMRS-based uplink channels with controlled time domain window start and end, utilizing event-based triggering to optimize DMRS bundling in wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If DMRS bundling is applied across multiple slots to improve channel estimation accuracy, then measurement precision is improved, but device complexity increases due to time domain window management
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the time domain window size and duration for DMRS bundling based on channel conditions, traffic patterns, and quality of service requirements. The base station can configure different window lengths (e.g., spanning 1 to multiple slots) and adjust bundling parameters through RRC signaling, allowing optimization of channel estimation accuracy while managing device complexity through adaptive parameter tuning rather than fixed complex management procedures
Solution Approach 2:
The patent implements dynamics by enabling flexible start and end points for time domain windows used in DMRS bundling. The window can dynamically begin at different symbol positions within slots and extend across varying numbers of slots based on current system conditions. This dynamic approach allows the system to adapt the bundling duration and timing to match actual channel coherence requirements, improving measurement precision when needed while reducing complexity when channel conditions are stable
2Adaptability or versatility
If event-based triggering is implemented for DMRS bundling to improve system adaptability, then adaptability or versatility is improved, but device complexity increases due to event monitoring and triggering mechanisms
Solution Approach 1:
The patent applies self-service by enabling the user equipment to autonomously determine when to start and end DMRS bundling based on pre-configured event criteria received from the base station. The UE monitors for events such as channel quality thresholds, slot boundary conditions, or traffic pattern changes, and automatically triggers bundling operations without requiring continuous base station control signaling. This reduces device complexity by eliminating the need for complex event monitoring and triggering mechanisms at the base station while maintaining high system adaptability through UE-autonomous decision-making
3Measurement precision
If time domain window for DMRS bundling is extended to cover multiple slots to improve channel estimation, then measurement precision is improved, but loss of time increases due to extended bundling duration
Solution Approach 1:
The patent applies partial or excessive action by allowing the time domain window for DMRS bundling to selectively span multiple slots only when channel conditions warrant extended estimation, rather than applying fixed extended bundling to all transmissions. The system uses partial bundling (covering only the necessary portion of slots needed for adequate estimation) combined with event-based triggering to activate extended windows only when needed, thus improving measurement precision for critical transmissions while minimizing overall time loss by avoiding unnecessary extended bundling during stable channel conditions
Data Source
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AI summary
Disclosed are a method and a device for transmitting or receiving an uplink channel on the basis of demodulation reference signal (DMRS) bundling in a wireless communication system. A method by which a terminal transmits an uplink channel in a wireless communication system, according to one embodiment of the present disclosure, comprises the steps of: receiving configuration information related to the DMRS bundling for the uplink channel from a network; and transmitting the uplink channel to the network in a first actual time domain window (TDW) within a set TDW or in the first actual TDW and a second actual TDW within the set TDW, wherein the first actual TDW ends in relation to an event, and whether to generate the second actual TDW in response to the event may be based on capabilities of the terminal, on the basis of the event being a first type event.