Secondary Cell Activation via Pre-configured Pilot CSI Reporting
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Solution Overview
Problem
Current 5G communication technologies lack a standardized method for terminal devices to report channel state information measurement results during secondary cell activation, leading to inefficiencies and increased processing latency, especially in scenarios with high-frequency bands where uplink channels are absent or inactive.
Innovation Solution
The method involves the network device indicating an uplink resource for the terminal device to report channel state information measurement results, allowing direct channel state information measurement on configured pilot resources, thereby reducing processing latency and improving user service experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal device performs CSI measurement in the secondary cell activation phase, then the channel state information can be obtained, but the reporting method is not standardized leading to increased processing latency
Solution Approach 1:
The network device configures pilot resources and CSI measurement parameters in advance before the secondary cell activation phase. The terminal device performs CSI measurement on these pre-configured pilot resources during the activation phase, eliminating the need for real-time configuration and reducing processing latency.
Solution Approach 2:
The patent establishes a standardized feedback mechanism where the terminal device reports CSI measurement results to the network device during the secondary cell activation phase. The network device receives this feedback and uses it to determine whether to activate the secondary cell, creating a closed-loop system that improves efficiency.
2Productivity
If the network device configures pilot resources for CSI measurement, then the measurement can be performed directly, but the uplink channel may be absent or inactive in high-frequency band scenarios
Solution Approach 1:
The patent uses downlink pilot resources as an intermediary for CSI measurement in scenarios where the uplink channel is absent or inactive. The terminal device measures the downlink pilot resources to obtain CSI information, which then serves as the basis for determining uplink transmission parameters, effectively bridging the gap between downlink and uplink in high-frequency band scenarios.
Solution Approach 2:
The patent adapts the CSI measurement process by changing the measurement object from uplink channels to downlink pilot resources when the uplink channel is unavailable. The terminal device adjusts its measurement parameters to focus on downlink pilot resources, and the network device adjusts the configuration parameters accordingly, enabling the system to function in high-frequency band scenarios without traditional uplink channels.
Data Source
AI summary
This application discloses a secondary cell activation method and an apparatus, and relates to the communication field, so that a terminal device can report a channel state information measurement result in a secondary cell activation phase to a network device. The secondary cell activation method includes: A terminal device receives first indication information, where the first indication information is used to indicate an uplink resource for reporting a channel state information measurement result in a secondary cell activation phase; and the terminal device sends the channel state information measurement result to a network device based on the first indication information.