Dynamic Control Region Signaling for DMRS Location
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Solution Overview
Problem
Current wireless communication technologies, such as LTE and NR, face challenges in efficiently managing control region sizes, which affects the location identification of demodulation reference signals (DMRS) and data channel communication, particularly in varying bandwidth conditions.
Innovation Solution
The method involves receiving a bit indicating a particular set of control symbols within a downlink control region, allowing for the identification of the DMRS location associated with a data channel, enabling communication based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the control region size is reduced to save resources, then resource usage is reduced, but the ability to provide downlink reference signals timely deteriorates
Solution Approach 1:
The patent implements dynamic control region size adaptation by allowing the control region size to vary based on bandwidth conditions. The system can switch between different control region sizes (e.g., first size for larger bandwidth, second size for smaller bandwidth) to optimize both resource usage and timing performance根据不同带宽条件
Solution Approach 2:
The patent changes the control region size parameter based on system bandwidth to resolve the contradiction. By adjusting this key parameter, the system achieves timely provision of downlink reference signals while maintaining efficient resource usage across different bandwidth scenarios
2Loss of time
If the control region size is increased to provide reference signals timely, then timing for providing downlink reference signals is improved, but resource usage increases
Solution Approach 1:
The system dynamically adjusts control region size based on actual bandwidth conditions rather than using a fixed size. This allows the control region to be larger only when necessary for timely reference signal provision, and smaller when bandwidth conditions allow for more efficient resource usage
Solution Approach 2:
The control region size parameter is adjusted according to system bandwidth to balance timing performance and resource efficiency. The patent establishes a relationship between bandwidth conditions and optimal control region size to resolve this contradiction
3Device complexity
If a fixed control region size is used to simplify system design, then device complexity is reduced, but adaptability to varying bandwidth conditions deteriorates
Solution Approach 1:
The patent introduces dynamic adaptability to varying bandwidth conditions through configurable control region sizes. The system can adapt its control region size based on the actual bandwidth scenario, improving versatility without significantly increasing system complexity through straightforward configuration mechanisms
Solution Approach 2:
The control region size parameter is made configurable to adapt to different bandwidth conditions. This parameter change approach maintains relatively simple system design while achieving good adaptability across various bandwidth scenarios
Data Source
AI summary
Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive at least one bit indicating a particular set of control symbols, of a plurality of sets of control symbols, comprising a downlink control region identify a location of a demodulation reference signal (DMRS), associated with a data channel, based at least in part on the at least one bit indicating the particular set of control symbols comprising the downlink control region; and communicate on the data channel based at least in part on the DMRS. Numerous other aspects are provided.