Downlink Common Burst Channelization for 5G Wireless Systems
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Solution Overview
Problem
Current wireless communication systems lack efficient dynamic scheduling and effective channel estimation methods, particularly in 5G networks, which hinders optimal resource utilization and handover decisions.
Innovation Solution
Incorporating a channel state information reference signal (CSI-RS) in the downlink common burst to facilitate channel estimation and feedback, as well as a demodulation reference signal (DM-RS) for low latency data transmission and a measurement reference signal (M-RS) for handover assistance, within the subframe structure of wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional wireless communication systems are used without dedicated reference signals in downlink common bursts, then system complexity is reduced, but channel estimation accuracy deteriorates
Solution Approach 1:
The patent segments the downlink common burst into multiple slots, with each slot containing dedicated reference signals (CSI-RS, DM-RS, M-RS) for specific functions. This segmentation allows precise channel estimation in each slot without requiring complex system-wide reference signal structures, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The patent introduces reference signals as intermediary elements between the base station and mobile station. These reference signals (CSI-RS for channel state information, DM-RS for demodulation, M-RS for measurement) act as mediators that enable accurate channel estimation without requiring complex direct measurement methods, thus improving measurement precision while maintaining manageable system complexity.
2Adaptability or versatility
If dynamic scheduling is implemented without efficient reference signals, then scheduling flexibility is improved, but channel estimation effectiveness deteriorates
Solution Approach 1:
The patent implements dynamic scheduling where reference signals are configured adaptively based on channel conditions, traffic requirements, and service types. The base station can dynamically adjust the presence, density, and positioning of CSI-RS, DM-RS, and M-RS in downlink common bursts, enabling both scheduling flexibility and effective channel estimation simultaneously.
3Reliability
If multiple reference signals are included in downlink common burst, then channel estimation and handover performance are improved, but resource overhead increases
Solution Approach 1:
The patent designs reference signals with multi-functionality where CSI-RS serves both channel state information acquisition and channel estimation purposes, while M-RS supports both measurement reporting and handover decisions. This universality reduces the need for separate dedicated signals for each function, improving reliability while controlling resource overhead.
Solution Approach 2:
The patent implements partial reference signal deployment where not all slots in every downlink common burst contain all types of reference signals. Instead, reference signals are deployed selectively based on actual needs - for example, M-RS is included only when handover is anticipated, and CSI-RS density is adjusted based on channel variability. This partial action approach improves handover reliability while minimizing resource overhead.
Data Source
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AI summary
Techniques for utilizing resources in a downlink (DL) common burst are described herein. In one aspect, a channel state information reference signal (CSI-RS) may be included in the DL common burst for channel estimation. In another aspect, a demodulation reference signal (DM-RS) and DL data may be included in the DL common burst for low latency data transmission. In yet another aspect, a measurement reference signal (M-RS) may be included in the DL common burst to assist handover decisions. The techniques described herein may be used for various wireless communications systems.