Channel State Information Reporting With Dynamic Bandwidth Parts
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently reporting channel state information while minimizing power consumption, particularly in power-sensitive devices like IoT devices, which are critical for providing continuous services in 5G networks.
Innovation Solution
A method and apparatus for optimizing channel state information reporting in a wireless communication system by configuring bandwidth parts (BWPs) and using efficient power-saving modes, allowing terminals to adjust their reception bandwidth dynamically based on traffic conditions, thereby reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals continuously monitor and report channel state information to maintain communication quality, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic channel state information reporting where terminals report CSI only at specific intervals or when channel conditions change significantly, rather than continuously. This periodic action reduces power consumption by allowing terminals to enter low-power states between reporting instances while maintaining adequate communication reliability through timely updates.
Solution Approach 2:
The patent introduces dynamic adjustment of CSI reporting frequency based on channel conditions, traffic patterns, and power state. When channels are stable or traffic is low, reporting frequency decreases to save power. When channels deteriorate or traffic increases, reporting frequency increases to maintain reliability. This dynamic adaptation resolves the contradiction between continuous monitoring and power saving.
2Speed
If terminals operate in wide bandwidth to maintain high data rates, then communication speed is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic bandwidth adjustment where terminals operate in wide bandwidth when high data rates are required and traffic demands it, but switch to narrower bandwidth when traffic is light or power saving is prioritized. This dynamic scaling of operational bandwidth allows the system to adapt between speed and power consumption based on real-time conditions.
Solution Approach 2:
The patent changes the bandwidth parameter dynamically based on traffic conditions and power state. By adjusting this fundamental system parameter, the patent enables terminals to achieve high data rates when needed while consuming less power during low-activity periods, resolving the contradiction between speed and energy usage.
3Adaptability or versatility
If terminals frequently update channel state information to adapt to changing conditions, then communication adaptability is improved, but processing overhead increases
Solution Approach 1:
The patent implements periodic CSI updates with intelligent triggering, where terminals update channel state information at regular intervals or when predefined thresholds are exceeded. This approach maintains good adaptability by capturing significant channel changes while reducing processing overhead by avoiding unnecessary updates during stable conditions, thus balancing adaptability with processing efficiency.
Data Source
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AI summary
A method performed by a terminal in a wireless communication system includes: receiving, from a base station, configuration information associated with a channel state information (CSI) report including at least one information associated with a CSI resource setting; receiving, from the base station, information associated with channel occupancy duration; determining whether at least one symbol for receiving a channel state information reference signal (CSI-RS) is within channel occupancy duration, based on the at least one information associated with the CSI resource setting and the received information associated with the channel occupancy duration; receiving, from the base station, at least one CSI-RS on the at least one symbol, based on a result of the determining; and when the CSI report is determined to be transmitted, transmitting, to the base station, the CSI report based on the configuration information associated with the CSI report and the received at least one CSI-RS.